Distribution of inverts in a habitat

I conducted a study and am comparing the results of two sites where I put pitfall traps. One was a sheltered, upturned soil area (here more species were found - a wide range) and one was an open grassy area with not much shelter. Can someone explain different factors that may affect this other than light intensity? ANY HELP APRECIATED!!

Answers
Availability of food (soil richness) shelter, water availability. What was the hypothesis etc? Might help me help you a little more to know some more background info :)
smichaels93
25 April 2016
http://jncc.defra.gov.uk/protectedsites/sacselection/habitat.asp?FeatureIntCode=H1140http://
smichaels93
25 April 2016
This link might help you, even though it applies to beaches it's still relevant :)
smichaels93
25 April 2016
In addition to light intensity there are a number of factors that could affect this:Availability of food/water, shelter from the elements, shelter from predators, presence of any symbiotic organisms and presence of possible mates.Hope this helps a bit :)
Isabelle H.
25 April 2016
apart from light intensity you should also think about predators more in a certain area or less protective places to hide. in a certain areaFurthermore food and water availability. Shelter from the elements. suitability of nesting site/places to lay eggs etc. hope that helps
dr_dan
26 April 2016
The upturned soil area would have provided more shelter for the invertebrates than the open grassland, protecting then from extreme wether conditions and provided more areas to hide from predators. It also would have retained water more effectively than the open grassland, which is very important for the survival of invertebrates that dry out easily such as earthworms and snails. This means that the species colonising this area do not need to be as specialised to the environment as in the grassland, providing a wider range of niches to be occupied in less (evolutionary) time. Hope this helps!
Heather W.
02 May 2016
There are several factors that could have affected this result. This could include the chemical composition of the soil, water availability and even the weather! There could also be increased competition for resources in one area more than another, both inter-species and intra-species. You could also think about the likelihood of one area being more polluted than another.
Andy D.
08 May 2016
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