LAND ANIMALS
( PITFALL TRAP AND DRY
DECANTATION )
1.1
Background
The population can be defined as a collective group
of organisms of the same species that occupy space or a certain time with a
certain pattern. A collection of some of the population referred to community.
Identification process of a community in a habitat can do with pitfalltraps
method and dry decantation. Pitfall traps method is a method of catching an
animal with a trap system, especially for animals that live on the surface soil
insects example, decantation and dry is a method for capturing animals infauna
using Barless Set. The number and types of species in a community depends on
the conditions of an area, biotic and abiotic factors. Then, a species that can
adapt to its environment and interact with each other will be able to survive
in that environment. Environmental factors that affect the community a species
include: temperature, humidity, pH. Methods pitfall traps and dry decantation
is used to get a reflection of soil animal communities and the diversity index
of the data obtained.
Insects land is a fauna that has the type and amount
of greatest successfully occupy a variety of habitats, as well as having a very
wide spread area. The role of insects in nature is very important, such as a
producer of food and shelter, as pollinators of plants, pests and parasites as well
as no less important is as decomposers. The role of insects as decomposer in
the initial stages which indirectly is an important tool for the creation of a
balance of natural ecosystems. Insects move and eat leaf well as other parts of
the plants that fall to the ground, thus accelerating the process of
destruction of organic materials. Results broken down further described back by
other soil microflora and fauna. Microorganisms have a big role in
mineralization and re-circulation of mineral elements. Through the process of
this mineralization will be formed of mineral salts (nutrients) that can be
used by plants.
Humans derive many benefits from insects in many
ways. Without them, human beings can not exist in life as it is now. Research
on insects has helped experts knowledge to solve many problems in the
offspring. Morphology of insects vary greatly in terms of size, shape, and
color of the body or other body parts. Generally insects live in almost any
environment, in water, soil, whereby the structure and behavior as well as
their life cycle are modified adjustments as well as having a broad
distribution area. Aspects of it was very interesting to learn. Given the very
large role of insects in the ecosystem, especially insects land surface, it is
done with the material lab animal ecology ground insect populations associated
with the study of ecosystems.
1.2
Formulation
of the problem
1. How
soil’s athropodathat contained in the Biology garden University of Malang?
2. How
diversity, evenness and species richness of soil’s athropoda in the Biology
garden University of Malang?
3. How animal species infauna found in
the garden of Biology, State University of Malang
4. How the value of diversity index,
evenness and species richness of animals infauna in the garden of Biology,
State University of Malang
5. How the influence of abiotic factors
on the value of H, E, R type of soil animals were found in the garden of
Biology, State University of Malang
1.3
Research
purpose
1. Knowing
soil’s athropodathat contained in the Biology garden University of Malang
2. Knowing
diversity, evenness and species richness of soil’s athropoda in the Biology
garden University of Malang
3. Knowing animal species infauna found
in the garden of Biology, State University of Malang
4. Knowing the value of diversity
index, evenness and species richness of animals infauna in the garden of
Biology, State University of Malang
5. Knowing the influence of abiotic
factors on the value of H, E, R type of soil animals were found in the garden
of Biology, State University of Malang
1.4 Benefits
By doing the study of animal species in the garden
soil biology Malang State University, then obtained the following benefits,
1. Students
gain the ability on how to measure soil quality parameters
2. Students
gain the ability on how to name an animal bio-indicator or soil found
1.5 Limitations
The location of practicum In biology garden State
University of Malang. The scope of activities is pitfall trap and dry
decantation practicum, to determine soil quality in terms of biotic and abiotic
factors and identify soil animals in the region.
CHAPTER II
LITERATURE
REVIEW
2.1 PiTfall Trap
A pitfall trap consists of a container buried in the
ground with its rim at surface level, and often with a roof above the trap to
limit evaporation and dilution of killing liquids by rain water. There are a
variety sizes and designs of pitfall traps. The diameter of the container
varies between 2 cm and 2 m and contains different volumes, with container
materials ranging from glass and plastic to mental (Greenslade, 1964). In
ground arthropod sampling, liquids are usually added to kill the samples and preserve
them. Killing liquids usually cover the bottom of the container, ensuring that
the samples are easier to identify after prolonged sampling periods and
limiting their chance to escape (Pekar 2002). Solutions commonly used are water
saturated with salt, diluted formaldehyde, ethylene glycol, benzoic acid and
alcohol. It should be added that the use of strong volatility chemicals like
alcohol can be controversial for a standard ‘passive’ sampling method as it
actively attracts certain species like molluscs, but we still consider pitfalls
as passive traps because the solutions are mainly used to preserve samples
rather than attracting them. In water-based solutions, a little detergent is
often added to lower the surface tension and prevent insects from floating on
the surface (Gullan and Cranston 2005). In addition to wet pitfall traps which
contain liquids, dry pitfall traps are also sometimes used, which capture
living samples (Mader et al. 1990; Winder et al. 2001). As cost-effective
sampling methods, pitfall traps are widely used in collecting surface-dwelling
arthropods (Greenslade 1964), sometimes even as the standard method for
selected species assemblages (e.g. for carabids, see Rainio and Niemelä
2003). The capture results are affected
by the structure of the ground vegetation (for example, catches of ground
beetles can be reduced with the increase of vegetation height, Greenslade
1964), trap size (with small traps more efficient in catching small beetles,
while large trap in catching larger ones, Luff 1975), trap shape (with round
traps catching more carabids than rectangular ones, Spence and Niemelä 1994),
material of the trap (with glass being the most capture-effective material in
catching beetles as compared to plastic and metal, Luff 1975), solution
concentration (with the concentration of formaldehyde positively correlated
with the capture rate of carabids, Pekar 2002), detergent (for example the
number of spiders caught increases with the addition of detergent, Pekar 2002)
and cover use (more carabids caught in traps without cover than in those with
covers, Spence and Niemelä 1994). Therefore, when using pitfall traps to study
a certain arthropod taxon, a good combination of trap designs should be
considered. For example, round glass traps with 20% formaldehyde and without
cover would be effective traps for catching carabids. Pitfall traps are
obviously suitable to sample mobile, ground-dwelling arthropods, but not
arboreal or primarily “airborne” ones (Spence and Niemelä 1994; Siemann et al.
1997; Rainio and Niemelä 2003). In addition, pitfall traps catch mammals (e.g.
mice), amphibians (e.g. frogs) and slugs, which rot quickly with bad smell,
affecting catches of target arthropods. Predation of sampled insects by birds
or predatory carabid beetles and other predatory insects inside the containers
can also influence to composition of pitfall trap samples (Mitchell 1963).
2.2
Factors That Influence Soil Quality
1. ORGANIC
MATTER
When plant
residues are returned to the soil, various organic compounds undergo
decomposition. Decomposition is a biological process that includes the physical
breakdown and biochemical transformation of complex organic molecules of dead
material into simpler organic and inorganic molecules (Juma, 1998).
The continual
addition of decaying plant residues to the soil surface contributes to the
biological activity and the carbon cycling process in the soil. Breakdown of
soil organic matter and root growth and decay also contribute to these
processes. Carbon cycling is the continuous transformation of organic and
inorganic carbon compounds by plants and micro- and macro-organisms between the
soil, plants and the atmosphere.
Decomposition of organic matter is largely a
biological process that occurs naturally. Its speed is determined by three
major factors: soil organisms, the physical environment and the quality of the
organic matter (Brussaard, 1994). In the decomposition process, different
products are released: carbon dioxide (CO2), energy, water, plant nutrients and
resynthesized organic carbon compounds. Successive decomposition of dead
material and modified organic matter results in the formation of a more complex
organic matter called humus (Juma, 1998). This process is called humification.
Humus affects soil properties. As it slowly decomposes, it colours the soil
darker; increases soil aggregation and aggregate stability; increases the CEC
(the ability to attract and retain nutrients); and contributes N, P and other
nutrients.
Soil organisms,
including micro-organisms, use soil organic matter as food. As they break down
the organic matter, any excess nutrients (N, P and S) are released into the
soil in forms that plants can use. This release process is called
mineralization. The waste products produced by micro-organisms are also soil
organic matter. This waste material is less decomposable than the original
plant and animal material, but it can be used by a large number of organisms.
By breaking down carbon structures and rebuilding new ones or storing the C
into their own biomass, soil biota plays the most important role in nutrient
cycling processes and, thus, in the ability of a soil to provide the crop with
sufficient nutrients to harvest a healthy product. The organic matter content,
especially the more stable humus, increases the capacity to store water and
store (sequester) C from the atmosphere
2. Soil
pH
Soil pH is a
measure of the soil solution’s acidity and alkalinity. By definition, pH is the
‘negative logarithm of the hydrogen ion concentration [H+]’, i.e.,pH = -log
[H+]. Soils are referred to as being acidic, neutral, or alkaline (or basic),
depending on their pH values on a scale from approximately 0 to 14 (Figure 1).
A pH of 7 is neutral (pure water), less than 7 is acidic, and greater than 7 is
alkaline. Because pH is a logarithmic function, each unit on the pH scale is
ten times less acidic (more alkaline) than the unit below it. For example, a
solution with a pH of 6 has a 10 times greater concentration of H+ ions than a
solution with a pH of 7, and a 100 times higher concentration than a pH 8
solution. Soil pH is influenced by both acid and base-forming ions in the soil.
Common acid-forming cations (positively charged dissolved ions) are hydrogen
(H+), aluminum (Al3+), and iron (Fe2+ or Fe3+), whereas common base-forming
cations include calcium (Ca2+), magnesium (Mg2+), potassium (K+) and sodium (Na+).
Most agricultural soils in Montana and Wyoming have basic conditions with
average pH values ranging from 7 to 8 (Jacobsen, unpub. data; Belden, unpub.
data). This is primarily due to the presence of base cations associated with
carbonates and bicarbonates found naturally in soils and irrigation waters. Due
to relatively low precipitation amounts, there is little leaching of base
cations, resulting in a relatively high degree of base saturation
3. TEMPERATURE
The quality and
quantity of the crop depends upon many factor including the soil. Soil
temperatures significantly affect the budding and growth rates of plants. For
example, with the increase in soil temperature, chemical reactions speed up and
cause seeds to germinate. Soil temperature plays an important role in the
decomposition of soil. It also regulates many processes, including the rate of
plants development and their growth Soil temperature also plays an important
role for setting life cycles of small creatures which live in the soil. For
example, hibernating animals and insects come forth of the ground according to
soil temperature.
Soil temperature
is also regarded as sensitive climate indicator and stimulus. Scientists use
soil temperature data in the research on variety of topics including climate
change. (Sharratt et al., 1992). Soil temperature anomalies also directly
affect the growth and yield of agricultural crops. For example cool spring
season, soil temperature in shallow layers delays corn development and on the
other hand warm, spring season, soil temperature contributes to an increase in
corn yield (Bollero et al, 1996). Soil temperature although is integral in many
ecosystem processes, is costly and its observation is difficult (Shannon E.
Brown et al, 2000) Soil temperature also determines the state of the water in
the soil whether it will be in a liquid, gaseous, or frozen state. In cold
soils, the rate of decomposition of organic matter will be slow because the
microorganisms function at a slower rate, as a result the color of soil will be
dark. In tropical climates intense heating causes increased weathering and the
production of iron oxides, which results into the reddish color of soil.
4. SOIL
MOISTURE
Soil moisture is
an important hydrologic variable that controls various land surface processes.
The term “soil moisture” generally refers to the temporary storage of
precipitation in the top 1 to 2 m of soil horizon. Although only a small
percentage of total precipitation is stored in the soil after accounting for
evapotranspiration (ET), surface runoff, and deep percolation, soil moisture
reserve is critical for sustaining agriculture, pasture, and forestlands. Given
the fact that precipitation is a random event, soil moisture reserve is
essential for regulating the water supply for crops between precipitation
events. Soil moisture is an integrated measure of several state variables of
climate and physical properties of land use and soil. Hence, it is a good
measure for scheduling various agricultural operations, crop monitoring, yield
forecasting, and drought monitoring. In spite of its importance to agriculture
and drought monitoring, soil moisture information is not widely available on a
regional scale. This is partly because soil moisture is highly variable both
spatially and temporally and is therefore difficult to measure on a large
scale. The spatial and temporal variability of soil moisture is due to
heterogeneity in soil properties, land cover, topography, and non-uniform
distribution of precipitation and ET. On a local scale, soil moisture is
measured using various instruments, such as tensiometers, TDR (time domain
reflectometry) probes, neutron probes, gypsum blocks, and capacitance sensors.
The field measurements are often widely spaced, and the averages of these point
measurements seldom yield soil moisture information on a watershed scale or
regional scale due to the heterogeneity involved. In this regard, microwave
remote sensing is emerging as a better alternative for getting a reliable
estimate of soil moisture on a regional scale. With current microwave
technology, it is possible to estimate soil moisture accurately only in the top
5 cm of the soil (Engman, 1991). However, the root systems of most agricultural
crops extract soil moisture from 20 to 50 cm at the initial growth stages and
extend deeper as the growth progresses. Further, the vegetative
characteristics, soil texture, and surface roughness strongly influence the
microwave signals and introduce uncertainty in the soil moisture estimates
(Jackson et al., 1996). Field-scale data and remotely sensed soil moisture data
are available for only a few locations and are lacking for large areas and for
multiyear periods. However, long-term soil moisture information is essential
for agricultural drought monitoring and crop yield prediction (Narasimhan,
2004). Keyantash and Dracup (2002) also noted the lack of a national soil
moisture monitoring network in spite of its usefulness for agricultural drought
monitoring.
5. SOIL
FERTILITY
Vaillant (1901)
wrote: „the higher the humus content is, the more fertile is the soil and this
fertility seems to be due, especially, to a large number of dinitrogen fixing
organisms living here”. Hence, after few years only from the beginning of the
soil microbiology research, the conviction appeared that soil fertility is due
to humus content and to the number of dinitrogen fixing bacteries. Remy (1902),
quoted by Waksman (1932), pointed out that some tests in differentiate between
soils used the decomposition rate of nitrogen organic compounds in soil, making
evident the conception that soil fertility can be estimated by biological
criteria. Then, Winogradsky (after 1890), discovering variation of the number
and activity of soil microflora, emitted the idea that the soil is a living
organism.
Between
1910-1915, Christensen (quoted by Waksman, 1932) was the first researcher who
suggested that the power of a soil for disintegrating cellulose can serve as
index of soil fertility. Waksman (1932) described the best the correlation of
the vital and chemical processes in soil. Although he devoted a chapter (Part
D: 543-569) in his monumental work Principles of soil microbiolog, to the
subject: „Microbiological processes of soil and soil fertility”. However, he
did not succeed to distinguish between the concept of soil fertility and that
of soil productivity. But sometimes, his conclusions about the nature of soil
fertility and about the possibility to estimate it can be considered very
correct and well correlated with the soil vital processes. So, appeared his
clear expression: Soil fertility and the rate of oxidation were found to be
influenced by the same factors and to same extent so that it was suggested that
the latter (the oxidation – N.B.) could be used as a measure of the former (of
the fertility – N.B.). Here, surely appears the biologic concept of the notion
soil fertility”. In 1949, Pavlovschi and Groza stated: If so far the feature of
a living organism was not recognized to the soil, nobody contests that the
arable soil is an organized biological medium. Although Steiner (1924) and
Pfeiffer (1938) elaborated the theory and practice of Biodynamic agriculture,
in Götheanum Institute - Dornach (Switzerland) and substantiated the conception
that the soil behave like a living organism, ecologically integrated, the first
definition of the soil fertility (known to us) was given by Howard (1941), the
founder, in England, of Organic farming:Soil fertility is the condition of a
soil rich in humus, in which the growth processes are getting on fast and
efficiently, without interruption there must be permanently an equilibrium
between the growth processes and those of decomposition. The key of fertile
soil and a thriving agriculture is the humus”. In fact, fertility state does
not exist only in a soil rich in humus, in uninterrupted development of the
growing processes and having permanently equilibrium between growing processes
and those of decomposition. Those elements of the definition (underlined by us)
reveal the wishes of the farmer, and are not objective features of soil
fertility. Within a certain time interval, the nature of processes from soil,
of increase or decomposition of organic matter (inclusive of humus) does not
stand under the equilibrium sign. Agricultural activity itself strongly
influences this equilibrium, with a special value in plant nutrition. We
subscribe to the assertion that the humus (between certain limits) is the key
of soil fertility and agriculture thriving. Maliszewska (1969) compared the
biologic activities of various soils and suggested that respiration,
proteolytic and cellulolytic activities are the most suitable parameters which
correlate with soil fertility. Batistic and Mayaudon (1977) investigated the
soil respiration and its enzymic activity under the influence of different treatments
with N, P, K fertilizers and/or liquid dejections from cattle and concluded
that the outstanding increase of respiration and enzymic activities of the
soil, was only produced in organically fertilized treatments, that showed an
increase of biological fertility of soil. Ştefanic’s definition (1994)
approaches the most the fundamental biologic feature of soil fertility:
„Fertility is the fundamental feature of the soil, that results from the vital
activity of micropopulation, of plant roots, of accumulated enzymes and
chemical processes, generators of biomass, humus, mineral salts and active
biologic substances. The fertility level is related with the potential level of
bioaccumulation and mineralization processes, these depending on the programme
and conditions of the ecological subsystem evolution and on anthropic
influences”. This definition has the quality to be analytical. Understanding
the definition in detail, the analyses of soil samples can be used for
quantifying the level of soil fertility. Also, Ştefanic (2005) gave a synthetic
definition of soil fertility: „Soil fertility is the feature of the terrestrial
loose crust to host complex processes (biotical, enzymical, chemical and
physical) which store biomass, humus and minerals”, easier understood and used
by farmers for realizing a sustainable, ecological agriculture. According to
this definition, the agrotechnical measures applied to soil must improve and
maintain the soil fertility and phytotechnical measures must ensure the plant
growth, without damaging the vitality and cultural condition of a soil.
6.
DIVERSITY INDEX
Diversity index
can be used to express the abundance of species in the community relations.
Diversity of species consists of two components, namely:
1.
The number of species in
a community that is often called species richness.
2.
The similarity of
species. The similarity shows how the abundance of these species among many
species.
Species richness
and similarity in a single value represented by the diversity index. Diversity
index is the result of a combination of species richness and similarity .There
same diversity index values obtained from the community with a wealth of low
and high similarity if a same community obtained from the community with a
wealth of high and low similarity. If only deliver value diversity index, it is
not possible to say the relative importance of species richness and similarity.
Diversity can be analyzed using the
Shannon-Wiener diversity index obtained by the parameters of species richness
and abundance of the proportion of each type in a habitat. This index is one of
the most simple and widely used to measure the diversity index. Shannon-Weiner
index can be used to compare the environmental stability of an ecosystem.
Shannon-Wiener diversity index used has the following formula:
H’ = - Σ
(pi log pi)
information:
H’ = the diversity index
H’ = the diversity index
Pi = comparison
of the number of individuals of the species with the number of individuals in
the overall sample plot (n/N)
This index is based on information
theory and the arithmetic average of uncertainty in predicting which species
were randomly selected from a collection of individual species and S N will be
held. On average it rises with the number of species and the distribution of
individuals among species, being the same / uneven. There are two things that
are owned by Shanon index, namely:
1.
H'= 0 if and only if
there is one species in a sample.
2.
H is the maximum only
when all the species number of individuals represented by the same S, this is a
completely uneven distribution abundance.
A community that
has a value H '<1 is said to be less stable society, if H' value between 1-2
is said to be a stable society, and if the value of H '> 2 is said to be
very stable. The community size H '<1.5 indicates a relatively low species
diversity, H' = 1.5 to 3.5 show the diversity of species classified as moderate
and H '> 3.5 indicates a high diversity.
The stability of
species are also affected by the level of evenness, the higher the value H ',
then the diversity of species in the community more stable (Odum, 1996) the
wearer the kind that has a high degree of stability has a greater opportunity
to sustain assess the stability of its kind. Or stability for the type can be
used in the community evenness index value (e '). the higher the value of e ',
the diversity of species in the community more stable and lower value of e',
then the stability of species diversity in the community is getting low.
E =H'/lnS
information:
e '= Index
evenness
H '= Shannon Index
S = Number of
species found
Ln = natural
logarithm
If the value of e 'higher shows types
increasingly spread in the community. Magnitude E '<0.3 indicates evenness
is low, E' = 0.3 - 0.6 evenness classified as moderate and E '> 0.6 then evennesskind is high. Species richness index (S), which
is the total number of species in a community. S depends on the sample size
(and the time required to achieve), is restricted as a comparative index.
Therefore, a number of indices is proposed to calculate the species richness
depends on the sample size. This is because the relationship between the S and
the total number of individuals observed, n, which increases with increasing
sample size.
Margalef Index (1958) R = (S-1) / lnN.
Based Magurran (1988) the amount of R <3.5 indicates relatively low species
richness, R = 3.5 - 5.0 shows the wealth of species classified as moderate and
R is high if it is> 5.0.
7. SOIL
ARTHROPODS
Many
bugs, known as arthropods, make their home in the soil. They get their name from
their jointed (arthros) legs (podos). Arthropods are invertebrates, that is,
they have no backbone, and rely instead on an external covering called an
exoskeleton. The 200 species of mites in this microscope view were extracted
from one square foot of the top two inches of forest litter and soil. Mites are
poorly studied, but enormously significant for nutrient release in the
soil.
Arthropods range in size from microscopic
to several inches in length. They include insects, such as springtails, beetles,
and ants; crustaceans such as sowbugs; arachnids such as spiders and mites;
myriapods, such as centipedes and millipedes; and scorpions.Nearly every soil
is home to many different arthropod species. Certain row-crop soils contain
several dozen species of arthropods in a square mile. Several thousand
different species may live in a square mile of forest soil.
Arthropods can be grouped as shredders,
predators, herbivores, and fungal-feeders, based on their functions in soil.
Most soil-dwelling arthropods eat fungi, worms, or other arthropods.
Root-feeders and dead-plant shredders are less abundant. As they feed,
arthropods aerate and mix the soil, regulate the population size of other soil
organisms, and shred organic material.
1. Shredders
Many large arthropods frequently seen on
the soil surface are shredders. Shredders chew up dead plant matter as they eat
bacteria and fungi on the surface of the plant matter. The most abundant
shredders are millipedes and sowbugs, as well as termites, certain mites, and
roaches. In agricultural soils, shredders can become pests by feeding on live
roots if sufficient dead plant material is not present. Millipedes are also
called Diplopods because they possess two pairs of legs on each body segment.
They are generally harmless to people, but most millipedes protect themselves
from predators by spraying an offensive odor from their skunk glands. This
desert-dwelling giant millipede is about 8 inches
2. Predators
Predators and micropredators can be
either generalists, feeding on many different prey types, or specialists,
hunting only a single prey type. Predators include centipedes, spiders,
ground-beetles, scorpions, skunk-spiders, pseudoscorpions, ants, and some
mites. Many predators eat crop pests, and some, such as beetles and parasitic
wasps, have been developed for use as commercial biocontrols.
3. Herbivores
Numerous root-feeding insects, such as
cicadas, mole-crickets, and anthomyiid flies (root-maggots), live part of all
of their life in the soil. Some herbivores, including rootworms and symphylans,
can be crop pests where they occur in large numbers, feeding on roots or other
plant parts.
4. Fungal
Feeders
Arthropods that graze on fungi (and to some
extent bacteria) include most springtails, some mites, and silverfish. They
scrape and consume bacteria and fungi off root surfaces. A large fraction of
the nutrients available to plants is a result of microbial-grazing and nutrient
release by fauna.
8. FUNCTION OF SOIL
ARTHROPODS
Although the plant feeders can become pests, most
arthropods perform beneficial functions in the soil-plant system.
1. Shred organic
material.Arthropods increase the surface area
accessible to microbial attack by shredding dead plant residue and burrowing
into coarse woody debris. Without shredders, a bacterium in leaf litter would
be like a person in a pantry without a can-opener – eating would be a very slow
process. The shredders act like can-openers and greatly increase the rate of
decomposition. Arthropods ingest decaying plant material to eat the bacteria
and fungi on the surface of the organic material.
2. Stimulate
microbial activity. As arthropods graze on
bacteria and fungi, they stimulate the growth of mycorrhizae and other fungi,
and the decomposition of organic matter. If grazer populations get too dense
the opposite effect can occur – populations of bacteria and fungi will decline.
Predatory arthropods are important to keep grazer populations under control and
to prevent them from over-grazing microbes.
3. Mix microbes
with their food. From a bacterium’s
point-of-view, just a fraction of a millimeter is infinitely far away. Bacteria
have limited mobility in soil and a competitor is likely to be closer to a
nutrient treasure. Arthropods help out by distributing nutrients through the
soil, and by carrying bacteria on their exoskeleton and through their digestive
system. By more thoroughly mixing microbes with their food, arthropods enhance
organic matter decomposition.
4. Mineralize
plant nutrients. As they graze, arthropods
mineralize some of the nutrients in bacteria and fungi, and excrete nutrients
in plant-available forms.
5. Enhance soil
aggregation. In most forested and grassland
soils, every particle in the upper several inches of soil has been through the
gut of numerous soil fauna. Each time soil passes through another arthropod or
earthworm, it is thoroughly mixed with organic matter and mucus and deposited
as fecal pellets. Fecal pellets are a highly concentrated nutrient resource,
and are a mixture of the organic and inorganic substances required for growth
of bacteria and fungi. In many soils, aggregates between 1/10,000 and 1/10 of
an inch (0.0025mm and 2.5mm) are actually fecal pellets.
6. Burrow. Relatively few arthropod species burrow through the soil. Yet,
within any soil community, burrowing arthropods and earthworms exert an
enormous influence on the composition of the total fauna by shaping habitat.
Burrowing changes the physical properties of soil, including porosity,
water-infiltration rate, and bulk density.
7. Stimulate the
succession of species. A dizzying array of
natural bio-organic chemicals permeates the soil. Complete digestion of these
chemicals requires a series of many types of bacteria, fungi, and other
organisms with different enzymes. At any time, only a small subset of species
is metabolically active – only those capable of using the resources currently
available. Soil arthropods consume the dominant organisms and permit other
species to move in and take their place, thus facilitating the progressive
breakdown of soil organic matter.
8. Control pests. Some arthropods can be damaging to crop yields, but many others
that are present in all soils eat or compete with various root- and
foliage-feeders. Some (the specialists) feed on only a single type of prey
species. Other arthropods (the generalists), such as many species of
centipedes, spiders, ground-beetles, rove-beetles, and gamasid mites, feed on a
broad range of prey. Where a healthy population of generalist predators is
present, they will be available to deal with a variety of pest outbreaks. A
population of predators can only be maintained between pest outbreaks if there
is a constant source of non-pest prey to eat. That is, there must be a healthy
and diverse food web.
A fundamental dilemma in pest control is that tillage and
insecticide application have enormous effects on non- target species in the
food web. Intense land use (especially monoculture, tillage, and pesticides)
depletes soil diversity. As total soil diversity declines, predator populations
drop sharply and the possibility for subsequent pest outbreaks increases.
2.3 Dry Decantation
One
method that can be used that behavioral methods, one of which is Barles
tullgren. This method utilizes behavioral responses of animals, where animals
will be leaving the ground after getting the right stimulus, such as heat,
lighting, and drying. Because this method relies on the activity of the
animals, they will not extract the eggs or break stage of the amount that
represents. Furthermore, because of different animals react differently to the
same stimuli, the efficiency of the various groups that are extracted from the
core of a single ground will be different with the group. Extraction will not
be 100 percent efficient for each group, consequently, population assessment based
on this method will tend to be too low (Wallwork, 1970).
Extractor type
of behavior is the most common dry Berlese funnel Tullgren, which has been
modified in various ways to improve efficiency. Soil samples or bins placed in
wire netting at the mouth of the funnel-sided ground heated from above by
ordinary light bulb, bohlaminfrared, or heating coils or direct sunlight.
Because the sample surface became hot and dry then the animal will go down and
eventually out of the bottom of the sample, and a fall through a funnel into a
small collection bottles are placed under the tool. So that the way the work is
successful, this method requires a high temperature gradient arrangement and
relative humidity, and maintained, between the soil and the atmosphere inside
the funnel directly underneath. Thus, a small collection bottle should contain
water or some preservative solutions, such as alcohol will increase the
relative humidity of the funnel because of evaporation. Temperature gradients
can also be enhanced with mengelilingkan the bottom of the funnel with cold
water circulation system. It is also important to ensure the gradual heating of
soil samples, in addition to most animals, especially little children, will die
before merekadapat escape. Soil samples should be disturbed as little as
possible when placed in the extractor. If the sample is in a state of
congestion, the samples must be mounted upside down in the extractor., So that
the animals can get out of the sample quickly and easily over the surface of
the channel width(Wallwork, 1970)..
Light intensity
and air temperature will determine the soil temperature. Temperature of the
soil is one of the factors of soil physics that determine the presence and
density of soil organisms, thus soil temperature will determine the rate of
decomposition of soil organic material. Fluctuations in soil temperature is
lower than the air temperature and soil temperature depends on the air
temperature. Topsoil temperature fluctuated within one day and night and
depending on the season. Fluctuations it also depends on weather conditions,
topography and soil conditions (Suin, 1997). According Wallwork (1970), the
magnitude of the wave changes in the temperature of the soil layer is much
related to the amount of solar radiation that falls on the ground. The amount
of radiation that terintersepsi before reaching the ground, depending on the
existing vegetation on the surface.However, when the heating or the drying
before making cloudy weather conditions that affect the process of the release
of the land animals of the land to the bottle.
Arthropods are usually taken from
the soil / litter samples with Berlese-Tullgren channel (Haarlov, 1947; Berbena
Arias et al., Nd). In this channel, heated under the sun, and the collecting
bottle filled with a solution of the murder (eg 70% ethanol) is placed below
the sample. Light has a dual effect as it makes the organism photophobic to
stay away from the light source and also heating the sample. As a result of
warming that will make dried soil samples that will affect the gradient of
temperature and humidity of the sample (Block, 1966; Berbena Arias et al., Nd).
So with the high intensity light meal will increase the temperature inside the
funnel, it can increase the speed of drying the sample (Coleman et al., 2004),
but it can also burn organisms before their collection and thus lower estimate
their abundance (Walter et al., 1987; Berbena Arias et al., nd).
Soil conditions
and wet coagulates much more difficult than land animals to flee out of the
heating conditions and even death before he could escape or out of the ground.
The statement was supported by Wallwork (1970) which states that one of the
characteristics that interfere in the funnel to dry, which occurs mainly when
using wet soil, water condensation on the inner wall of the funnel can hold
small animals and to prevent the animal falls into a collection bottle is
small. (Wallwork, 1970).In addition based on an experiment conducted by Berbena
Arias et al. (Nd) states that soil insects can be more common in dry soils than
on wet ground.
CHAPTER
III
METHOD
Observations carried out on 26 & 27February,
2017. Observations were made on land areas,there are plot 1, plot 2 and plot 3.
For identification of samples was conducted in laboratory Ecology at F-MIPA UM
Life Sciences building O5 109. The method used for the sampling of soil animals
is purposive random sampling method, a
method of sampling is done deliberately. Intake of examples of soil animals is
done by using pitfall traps and dry decantation. The samples were obtained in
the field identified in the laboratory of Ecology F-MIPA UM in Biology building
O5 109.
To determine the diversity index (H ') using the
formula of Shannon and Weaner (Fachrul, 2007):
(H
') = Σ (-Pi. Ln Pi)
Information
:
Pi
= ni / N (ratio of the number of people the whole clan against clan)
H
'= estimated variance population
In
Wilh (1975), according to Shannon index value criteria:
H
'<1 = polluted or heavily polluted water quality
H
1-3 = stability biota community is or polluted water is being
H
'> 3 = stability biota community in prime condition (stable) or water
quality
To
determine the evenness index (E) can use the formula:
E
=
Information
:
S
(Shannon Index Weiner) = Number of species
E
'<0.3 = low
E
'= 0.3 - 0.6 = moderate
E
'> 0.6 = high.
To
determine the wealth index (R) can use the formula:
R
=
Information
:
R
<3.5 = low
R
= 3.5 - 5.0 = moderate
R>
5.0 = high
Tools
and materials used namely:
Tool :
·
Soil analyzer
·
Soil thermometer
·
Bookmarks
·
Set Pitfall Trap and
cover
·
Movies bottle
·
Shovel
·
Stereo microscope
·
Label
·
A small paintbrush
·
Tweezers
·
Needle
·
Petri dishes
·
Set Barless
·
Bottles of jam / group
·
Plastic tubs / buckets
·
Plakon’s bottle
·
Animal chamber
·
Straight pin
·
Aqua bottle of 300 ml
Material :
·
Alcohol solution and a
solution of glycerin with Comparison 3: 1
·
5% formalin solution
·
Alcohol 70%
·
Formalin 5%
·
Plastic
The
procedure of pitfall trap are,
Description:
a
= a glass of mineral water
b
= alcohol + glycerin (3: 1)
c
= a hole put a cup of mineral water
d
= litter foliage
e
= ground
And
the procedure for dry decantation are,
\
CHAPTER
IV
DATA ANALYSIS
4.1 Pitfall Trap
Table Observation
No.
|
Species
|
Picture
|
Picture
Comparison
|
Characteristics
|
U1
|
U2
|
U3
|
∑
|
|||||||||||||
1.
|
Messorpergandei
|
|
-
Body length 3.5-8.4mm
-
Head width 0.8-1.88mm
-
Mandible length 0.5-1.05mm
-
body mass of 0.12-3.25mg
-
Live body mass ranging from
1.33-11.03mg
-
has a head of equal length
and width, with very large mandibles.
-
has short white or yellow
hair and a large thorax
|
-
|
1
|
-
|
1
|
||||||||||||||
2
|
Messorcapensis
|
-
Medium to large, HW 2.35
-> 3.40.
-
Anterior clypeal margin
varying
-
head in full face view the
sides more or less straight and approximately parallel,
-
Occipital margin broadly and
shallowly concave to indented medially.
-
In HW range 2.35-3.44 the
maximum diameter of the eye is 0.40-0.58, about 0.15-0.19 x HW, and the CI
range is 103-119.
-
Dorsal alitrunk usually
rugose or rugulose everywhere but, as on the head, this sculpture may be
reduced until it is very faint or even absent.
-
All dorsal surfaces of head and body with
numerous conspicuous standing hairs.
-
Colour black to dark reddish
brown, the head and alitrunk always the same colour, the gaster sometimes
darker.
|
10
|
-
|
-
|
10
|
|||||||||||||||
3
|
Dolichoderus
sp.
|
-
Worker ants have a body
length that is typically about 4 mm, and can be recognised by their thick,
inflexible and strongly sculptured integument.
-
There is a flange on the
underside of the head near the base of the mandibles which is saw-like in
some species.
-
The longitudinal suture in
the central plate of the metathorax is deeply impressed.
-
The propodeum or first abdominal segment has the
posterior face distinctly concave when viewed from the side.
-
The gaster and alitrunk are separated by a single
segment, the petiole.
-
The orifice of the cloaca is a horizontal slit rather than a
circular opening. It is surrounded by a few rather stiff erect bristles.
|
2
|
2
|
6
|
10
|
|||||||||||||||
4.
|
Tetranychidae
|
-
medium-sized mites and are, on
average, 400 millimetres in length (excluding mouthparts).
-
are free-living (mostly predators, but
a few species are parasitic on insects)
-
genital pores are longitudinal
-
They lay small, spherical, initially
transparent eggs and many species spin silk webbing to help protect the
colony from predators
|
-
|
1
|
-
|
1
|
|||||||||||||||
5.
|
Hemiptera
|
-
Apical portion is membranous (this type of wing is
called hemelytron, or hemelytran if single)
-
Hind wings are completely membranous and shorter
than the front wings
-
Wings at rest are held over the abdomen with
membranous tips overlapping
-
piercing-sucking mouth parts
-
Mouth part in form of segmented beak arising from
front part of the head and extending back along the ventral side of the body
at times as far as the base of the hind legs
-
Antennae are fairly long and contain four to five
segments
-
Compound eyes are usually well developed
-
Many have glands secreting unpleasant odor
-
Well developed wings in general
-
Some are wingless
-
Eggs cases may be layed on plants or sometimes just
dropped
-
Simple metamorphosis with mostly five nymphal
instars
-
Most species are terrestrial but some are aquatic
-
Predacious ones are beneficial to man
-
Some may serve as disease vectors
|
|||||||||||||||||||
6.
|
Armadilidiumvulgare
|
-
Like all isopods,
-
oval-shaped and moderately flattened
along its dorsal plane.
-
Isopods have a cephalic shield
(incompletely fused carapace) that is less durable than the fully fused
carapace of other crustaceans
-
They have three tagmata: the head,
which bears their cephalon (fused maxillipeds), the pereon (thorax), and the
pleon (abdomen).
|
-
|
-
|
1
|
1
|
|||||||||||||||
7.
|
Pardosa
milvina
|
Wolf
spiders (Lycosidae family), is one of the spiders are most common worldwide.
their color ranges from black to brown or brown with elongated dark and light
stripes. Their eyes (they have eight) arranged in three rows of four, two and
two. Anterior eye (which is in the first line) is the smallest, and are in a
straight line. The middle row has the largest eyes, and the eyes in most
posterior row can be almost as large as those in the middle. All eyes are
dark. The legs are long and thin with very long spines. Scopulae the claw
tufts on spiders 'legs' that helps them in grip during driving. These spiders
do not have scopulae and therefore cannot climb smooth surfaces.
cephalothorax highest in the head region, or carapace. Chelicerae much
smaller than in other wolf spiders, measuring 4 to 9.5 mm. Dorsal stripes
general's wolf spider is more bumpy than other species. abdomen has yellow
spots. Sexual dimorphism in this species. Males have white fur on the patella
foot. This spider is considered small. The length of the females ranged from
5.1 to 6.4 mm and a length range from 4.3 to 5.0 mm male.
|
1
|
-
|
-
|
1
|
|||||||||||||||
8.
|
Pardosanigriceps
|
Pardosanigriceps
tinted slightly darker brown or black-brown. Thorax has almost yellow
complexion with a center stripe and a dark edge side, has two dark land line
(band). Stomach had spots lighter and darker. under the thorax are brown with
a yellow center that is different. Imago female measuring 7 mm, while males
are up to 5 mm (length of the body). Males are smaller than females
|
1
|
-
|
1
|
1
|
|||||||||||||||
9.
|
Allonemobiusfasciatus
|
Ortoptera
has a generally cylindrical body with elongated hind legs to jump, they have
a mouth mandibulate and compound eyes are large and may not have oselli,
depending on the species. Antenna has a few joints and a variable length
first and third segments of the thorax enlarged, while the second segment is
much shorter. They have two pairs of wings, the overlap between the stomach
at the break.
have wings Femur hind legs obviously bigger than the femur forefoot Antenna long and smooth like the hair Torque 3 segments long ovipositor black Nimpha pale yellow with brown stripes |
-
|
1
|
-
|
1
|
|||||||||||||||
10.
|
Pipiza
sp.
|
Body
flies are usually short and slender, have adapted to the movement of air.
TAGMA first of flies, head, consisting of ocelli, antennae, compound eyes,
and mouth parts (labrum, labium, mandible and maxilla). TAGMA second,
thoracic, hold the wings and have the flight muscles in the second segment,
the shape enlarged. The first and third sections is smaller. In the third
thoracic vertebra are halter, which helps balance the flies for fly. Flies
have a head that can begergerak with eyes and most have large compound eyes
on the left and right side of his head, with three small ocelli on it. Shape
antennas vary, but often short to reduce the load when flying. No species of
flies that have teeth or or other organ that allows them to eat solid food.
Flies only eat liquid food or small granules, such as pollen, and parts of
the mouth and digestive they show modifications that varies according to the
type of food. Tabanidae females using mandibular and maxillary like use a
knife to make an incision across his skin and suck the blood of the host.
Stomach tabanidae including large diverticula, allowing the insect to deposit
small amounts of fluids after a meal.
|
1
|
-
|
-
|
1
|
No.
|
Spesies
|
Jumlah
|
Pi
|
ln Pi
|
-Pi ln Pi
|
1.
|
Messor pergandei
|
1
|
0,0357
|
-3,3322
|
0,1189
|
2.
|
Messor capensis
|
10
|
0,3571
|
-1,0296
|
0,3677
|
3.
|
Dolichoderus sp.
|
10
|
0,3571
|
-1,0296
|
0,3677
|
4.
|
Tetranychidae
|
1
|
0,0357
|
-3,3322
|
0,1189
|
5.
|
Hemiptera
|
1
|
0,0357
|
-3,3322
|
0,1189
|
6.
|
Armadilidium vulgare
|
1
|
0,0357
|
-3,3322
|
0,1189
|
7.
|
Pardosa milvina
|
1
|
0,0357
|
-3,3322
|
0,1189
|
8.
|
Pardosa nigriceps
|
1
|
0,0357
|
-3,3322
|
0,1189
|
9.
|
Allonemobius fasciatus
|
1
|
0,0357
|
-3,3322
|
0,1189
|
10.
|
Pipiza sp.
|
1
|
0,0357
|
-3,3322
|
0,1189
|
Total
Species
|
28
|
1,6866
|
Information :
Pi
=
N = The number of organisms in all species
n = The number of organisms in the species X
· Diversity Index
H’ = ∑(-Pi . ln Pi )
= 1,6866 ( Medium Diversity)
H’ < 1.5 = Low
H’ = 1.5 – 3.5 =Medium
H’ > 3.5 = High
· Evenness Index
E =
= 0,7325 (High Evennes )
Keterangan :
S (Shannon Weiner Index) = Number of species
E’ < 0.3 = Low
E’ = 0.3 – 0.6 = Medium
E’ > 0.6 = High
·
Richness Index
R =
= 2,7009( Medium Richness )
Keterangan :
R< 3.5 = Low
R = 3.5 – 5.0 = Medium
R> 5.0 = High
From the data obtained is known that the location of the observations
found that as many as 10 different species of Messor pergandei, Messor capensis, Dolichoderus sp., Tetranychidae Hemiptera, Armadilidium
vulgare, Pardosa Milvina, Pardosa nigriceps, Allonemobius fasciatus, and Pipiza sp. Of the ten species are
species that are found are Messor
capensis and Dolichodherus sp.
each of which as many as 10 animal, while other species are discovered each 1
animal. From the calculation of the index of
diversity (H ') 1.6866 belonging to the medium diversity, evenness index (E)
0.7325 belonging to the high Evenness and richness index (R) 2.7009 belonging
to the species richness of the medium
4.2 Dry Decantation
Table Observations
The results Dry
decantation
No
|
name Species
|
Image
|
Characteristics of
|
Plot
|
Σ
|
H
|
E
|
R
|
||
1
|
2
|
3
|
||||||||
1
|
Oectophylla sp.
|
- 3 pairs of legs
- Pair of antenna
- body there are
threeportion
- small-sized
|
10
|
-
|
-
|
10
|
0.450
|
0.649
|
0.402
|
|
2
|
Polichodenus sp.
|
- 3 pairs of legs
- Pair of antenna
- body there are 3 parts
of
- larger sized species 1
|
1
|
-
|
-
|
1
|
Observations Fator Abiotic
No.
|
Name Tool
|
Results In Plot
|
|||
1
|
2
|
3
|
|||
Soil tester (Rapitest)
|
pH
|
7
|
7
|
7
|
|
Moisture (%)
|
2
|
2
|
2
|
||
Fertility
|
Too Little
|
Too Little
|
Too Little
|
||
Light (x1000)
|
5.3
|
5
|
4
|
||
thermometer ( 'C)
|
30
|
28
|
27
|
Data Analysis
No.
|
taxa
|
Total
|
Pi
|
Lnpi
|
pi Pi Ln
|
1.
|
Oectophylla sp.
|
0.83 -0.182 -0.151 2.
|
|||
10
|
Polichodenus sp.
|
1
|
0.083
|
-2.484
|
-0.207
|
Number
|
12
|
-0.358
|
1. Calculating diversity
index Shannon - Wiener (H1)
H1
= - (Pi lnPi)
has
been calculated using the formula above, the obtained Shannon-Wiener diversity
index (H) of H1 = - (- 0.358) = 0.358. That is, low species
diversity.
2. Calculating the value of
equity / evenness (E)
E
= = = 0.183
Having
calculated using the formula above, the evenness values obtained at 0.649. That
is, evenness high population.
3. Calculating the value of
wealth / richness (R) = == 0.402
Having
calculated using the formula above, the obtained value of $ 0.402. That is, the
species richness was.
CHAPTER V
DISCUSSION
5.1 Pitfall Trap
Macrofauna soil
is a large group of animals occupant of land with size> 2mm, organisms
included in the group consisting of soil macrofaunamilipida, isopods, insects,
molluscs and earthworms (Sugiyarto, 2000; Wood, 1989). Macrofauna soil plays an
important role as determinants well as indicators of soil quality. Among
because of its role in the decomposition process, carbon flows, redistribution
of nutrients, nutrient cycles, bioturbation and the formation of soil structure
(Stork and Eggleton, 1992; Anderson, 1994; de Bruyn, 1997).
Thesoil fauna
highly dependent on their habitats, due to the presence and density of the
population of a species of soil fauna in an area is determined by the
circumstances or environmental factors (biotic and abiotic) of the area. Soil
fauna are part from soil ecosystem, therefore in studying ecology factors of
soil fauna soil physics and chemistry factor is always measured (Suin, 2006). From the data obtained is known that
the location of the observations found that as many as 10 different species of Messor pergandei, Messor capensis, Dolichoderus
sp., Tetranychidae Hemiptera,
Armadilidium vulgare, Pardosa Milvina, Pardosa nigriceps, Allonemobius
fasciatus, and Pipiza sp. Of the
ten species are species that are found are Messor
capensis and Dolichodherus sp.
each of which as many as 10 animal, while other species are discovered each 1
animal. From the calculation of the index of
diversity (H ') 1.6866 belonging to the medium diversity, evenness index (E)
0.7325 belonging to the high Evenness and richness index (R) 2.7009 belonging
to the species richness of the medium.
Abiotic Factors
The existence of
soil macrofauna highly dependent on environmental conditions biotic and
abiotiknya (Suin in Ruslan, 2009). Factors that affect it include soil pH, soil
temperature, soil moisture, light intensity, soil fertility and vegetation.
Differences in environmental conditions lead to differences in the type of soil
macrofauna and also that dominate it.
a. Temperature
Temperature
is one of the factors of soil physics that determine the presence and density
of soil organisms. Temperature effect on the ecosystem due to temperature is a
necessary condition for living organisms, and there are other types of
organisms that can live only in a certain temperature range (Hardjowigeno,
2007). Location of sampling has a temperature of 26 C. The temperature is still
within the tolerance range of living things. This is in accordance with the
statement of Kamal, (2011) that the soil macrofauna tend to like a somewhat
lower temperature.
b. Soils
Abundanceand distribution of Macro
faunain land are affected by the condition of the soil. In the fertile soil
macro fauna will get more. Due to the fertile soil of plants will grow well.
This will cause the number and types of macro fauna ground herbivores will be
high, so that the macro soil fauna carnivore will also increase, which will
ultimately lead to a high abundance and distribution of macro fauna land in the
neighborhood (Blue et al, 2011; Erb and Lu, 2013) , At this time practicum soil
factors measured include soil pH, fertility, moisture, and light intensity
received.
c.
pH of soils
The pH of the soil in the plot revolves
around the 7 1 so that they allow soil organisms to live. The presence and
density of soil animals is highly dependent on soil pH. Animals ground there
who choose to live in the soil pH is acidic and some are happy with alkaline pH
and at neutral pH (Suin, 2003). Soil pH conditions depend on the content of
chemical compounds in the soil. Soil fertilizers, insecticides, or other
nutrients will cause the pH of the soil to be different. The more the content
of chemical compounds contained in the soil will result in the reduction in
species diversity in it (Herlinda, 2008).
d. Moisture
Moisture
in plot 1 is relatively dry because moisture measurement indicates the number
2. effects on the organism if circumstances limit the extras, that is, if the
state of extremely low or high. (Odum, 1993).
1. Light
intensity
Based on measurements at plot 1, it can
be seen that the light intensity of the sun being, allowing insects can still
do activities. The sunlight can affect the activity and local distribution of
species.
2.
Fertility
Soil fertility also determine whether
there is an existing mikrofauna activity. The more fertile the soil, the soil
microfauna showed activity is very high. In measurements made in plot 1 is
known that soil fertility is less dawn, so it can be indicated that the
existing microfauna activity and presence there is still low.
3.
Types of species found
Wallwork
(1970) explains that the Arthropod phylum is a group of soil animals, which
generally show the highest dominance among the organisms making up the
community land animals. Sugiyarto (2000) also reported that a group of soil
macrofauna in industrial forest habitat sengon mostly included in the Phylum
Arthropoda. From the results of existing lab obtained three types of animals at
plot 1 namely:
5.2 Dry Decantation
Low
diversity index indicated that these ecosystems are being disrupted. Miglioriniet al, 2003 reported that the land which
the low frequency disturbances have a diversity of Collembola higher than the
land have disorders such as pesticides and liming. Diversity indicated in variations
in the types contained in an ecosystem. If the diversity index is high, then
the ecosystem tend to be balanced. However, if the diversity index is low, it
indicates that the ecosystem in a state of distress or degraded.
Abiotic
factors which significantly affect diversity index (H ') infauna on land
without the spraying of pesticides such as temperature, humidity and pH.
Abiotic factor data obtained from third plot shows the average temperature,
humidity and pH consecutive 28'C, 2%, and 7. That is still in normal
conditions. According Jumar (2000), underground insects have a certain
temperature range for his life, the general temperature of the most effective
to be able to grow and develop properly is the lowtemperature
of 15'C, 25'C optimum and maximum 45'C obtained .The low infauna of the practicum is believed to be due beam
irradiation location that gets direct result infauna species will move further
into the ground for protection. Direct irradiation causes the water will more
easily evaporate into the air. This is in accordance with the revelation
Dharmawan, 2005 which states about the problems faced by animals on the
mainland low humidity, especially when the high temperature is how to reduce
evaporation or water loss in the body. At the time of the temperature
measurement at 1 week after the lab work, the location data collection in
overcast conditions so that the temperature obtained less accountable.
In
addition to problems associated with abiotic factors that cause low infauna on
the location of the data, also due to unfavorable factors observation of the
practitioner. Conditions are less microscopes allow to observe a barrier to a
situation in more detail about infauna that exist in the soil. Therefore, the
results obtained showed a low diversity index.
Epifauna
species richness moderate.Based on the index numbers on the analysis of data.
It is due to the availability of abundant food and no disruption of the land
and so infauna can live well and move on. Wealth index types generally can also
be influenced by abiotic factors such as soil moisture and soil organic content
(Suhardjono, 2012).
CHAPTER VI
CLOSING
6.1 Conclusion
1. Infauna animal species
found in
the garden of Biology, State University of Malang
include Oectophylla sp., Polichodenus sp Messor pergandei, Messor capensis, Dolichoderus sp.,
Tetranychidae Hemiptera, Armadilidium vulgare, Pardosa Milvina, Pardosa
nigriceps, Allonemobius fasciatus, and
Pipiza sp. The index value of diversity, evenness and species richness of animalsinfaunain the garden of Biology, State
University of Malang respectively 0.358; 0.649;
0.402.
2. From the calculation of the index of diversity (H ') 1.6866
belonging to the medium diversity, evenness index (E) 0.7325 belonging to the
high Evenness and richness index (R) 2.7009 belonging to the species richness
of the medium.
3. The influence of
abiotic factors on the value of H, E, R type of soil animals were found in the garden of Biology, State
University of Malang is the existence infauna being
easy or not to be found.
6.2 Recommendation
Preferably during practicum, following the
instruction correctly and the installation of the tool properly.You also must
be more precise in identification. I hope this report will be helpful.
References
Aharoni, A., Jongsma, M. A., & Bouwmeester, H. J.
2005. Volatile science? Metabolic engineering of terpenoids in plants. Trends
in plant science, 10(12), 594-602.
Aini, Nur. 2008. KajianAwalKebutuhanNutrisiDrosophila
melanogaster. Skripsi.DepartemenIlmuNutrisidanTeknologiPakan,
FakultasPeternakan.InstitutPertanian Bogor.
Alamendah. 2010. Hewan Nokturnal
Binatang Malam. Online. http://alamendah.wordpress.com/2010/12/22/hewan-nokturnal-binatang
malam/, diakses 27 April
2016.
Anderson ,J M. 1994. Functional Attributes of Biodiversity in
Landuse System: In D.J. Greenland and I. Szabolcs (eds). Soil Resiliense
and Sustainable Land Use. CAB International. Oxon
Applied
Soil Ecology 9: 361-368. Hagvar, S. 1998. The
relevance of the Rio-Convention on Biodiversity to conserving biodiversity of
soils. Applied Soil Ecology 9: 1-7.
Blue, J. D., Souza, L., Classen, A. T., Schweitzer, J.
A., & Sanders, N. J. (2011). The variable effects of soil nitrogen
availability and insect herbivory on aboveground and belowground plant biomass
in an old-field ecosystem. Oecologia, 167(3), 771-780.
Brussard,
L. 1998. Soil fauna, guilds, functional groups and ecosystem processes. Applied
Soil Ecology 9: 123-136.
de Bruyn, L. A. L. 1997. The status of soil macrofauna
as indicators of soil health to monitor the sustainability of Australian
agricultural soils. Ecological economics, 23(2), 167-178.
Decaens,
T., T.Dutoit, D.Alard and P. Lavelle. 1998. Factors influencing soil
macrofaunal communities in post-pastoral successions of Western France.
Dharmawan, etal.2005.AnimalEcology.Malang:
UM-Press.
Gullan P J and P S Cranston. 2005. The insects: an outline of entomology.
Chapter 17, Methods in entomology: collecting preservation, cuation, and
indentification. Hoboken, NJ: Wiley-Blackwell.
Erb, M., & Lu, J. 2013. Soil abiotic factors
influence interactions between belowground herbivores and plant roots. Journal
of experimental botany, 64(5), 1295-1303.
Fitriana, Yulia. 2006. Diversity and abundance of
macrozoobenthos in mangrove rehabilitation forest in Great Garden Forest Ngurah
Rai Bali. Jurnal Biodiversitas. Vol 7
(1) : 67-72.
Hagvar, S. 1998. The Relevance of the Rio Convention on Biodiversity to Conserving the
Biodiversity of Soil.Applied Soil Ecology. 9(1): 1-7.
Hakim, et.al. 1986. Dasar-Dasar Ilmu Tanah. Lampung: Universitas Lampung Press.
Hartono. 2009. Gegrafi 2
jelajahbumidanAlamSemesta.PusatPerbukuan, DepartemenPendidikanNasional
Indriyanto.
2006. EkologiHutan. PT. BumiAksara: Bandar Lampung
Jumar. 2000. AgriculturalEntomology.Jakarta: Rineka
Reserved.
Kirana, Chandra. 2015. DistribusiSpasialArthropodapadaTumbuhan Liar
di KebunBiologiFakultas MIPA UniversitasNegeri Malang.JurnalPenelitianBiologi.
1: 9-21
Kusmana, C,
1997. Metode Survey Vegetasi.PT.
PenerbitInstitutPertanian Bogor. Bogor.
Latifah,
S. 2005. AnalisisVegetasiHutanAlam. USU Reository: Sumatera
Utara.
Ludwig, JA, Reynold,
JF. 1988. Statistical Ecology. A.
Primer on Method on Competing :Jhon Willey and Sons.
Migliorini, M.,
Fanciulli, PP and Bernini, F. 2003.ComparativeAnalysis
of Two Edaphic Zoocoenosis (AcariOribatida, Hexapoda, and Collembola) in the
area of Orio Al Serio Airport (Bergamo, Italy Northgen). Pedobiologia, 47:
9-18.
Odum, E.p. 1998. Dasar-DasarEkologiEdisiKetiga. Gajah
Mada University press : Yogyakarta.
Suhardjono, YR 2012.Collembola (TailPegas).Bogor: PT
Vegamedia.
Wallwork,
J.A. 1970. Ecology of Soil Animals. London: Mc.Graw-Hill
Wood, M. 1989. Soil Biology. New York :Chapman and Hall.
Yulipriyanto, H. 2010. Biologi Tanah dan Strategi Pengolahannya.
Yogyakarta: Graha Ilmu.
Attachment
·
KegiatanPraktikum
sudah bagus tapi formatnya dibetulkan lagi ya agak berantakan ;)
BalasHapusOke terimakasih dita atas masukannya ;)
BalasHapussudah bagus, namun diperhatikan ya sebelum mengupload karena gambar tidak muncul
BalasHapus