Do habitat size and shape modify abiotic factors and communities in artificial treeholes?
Community composition may be determined by a variety of factors, including habitat dimension, abiotic conditions, and biotic interactions. Habitat dimensions may influence abiotic conditions, thus modifying community structure or biotic interactions. We used six different mesocosm sizes, two depths crossed with three surface areas, to test hypotheses regarding the direct and indirect effects of habitat dimensions (depth and surface area) on dissolved oxygen concentration and insect communities in artificial water-filled treeholes. Containers were monitored for dissolved oxygen concentrations and insect community composition from June 2002 to November 2003. We predicted that deep mesocosms would have lower species richness and insect larval densities than shallow due to less dissolved oxygen at deeper depths, and that large surface area mesocosms would have greater species richness and abundance of insects than small. Larger surface area habitats may attract more insects because they are easier to find and perceived by ovipositing females to be more stable. Dissolved oxygen concentrations ([DO]) at depth were consistently lower in deep than shallow habitats, and mosquito densities and species richness were lower in those deep mesocosms compared to shallow mesocosms. We found higher insect richness at certain times of the year in large and medium than in small surface area mesocosms. By modifying abiotic factors such as [DO], dimensional aspects of the habitat, in this case depth, may affect community structure in ways not predicted simply by habitat size.
KeywordsCulicoides guttipennis Dissolved oxygen Mesocosm experiment Mosquito Ochlerotatus triseriatus Species richness
Aikake’s Information Criterion
Analysis of Variance
Minimum Value of the Discrepancy Function
Dissolved Oxygen Concentration
Multivariate Analysis of Variance
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- Barrera, R. 1996. Species concurrence and the structure of a community of aquatic insects in tree holes. J. Vect. Biol. 21: 66–80.Google Scholar
- Beehler, J., S. Lohr and G. DeFoliart. 1992. Factors influencing oviposition in Aedes triseriatus (Diptera: Culicidae). Great Lakes Entomol. 25: 259–264.Google Scholar
- Connell, J. H. 1975. Some mechanisms producing structure in natural communities: a model and evidence from field experiments. In: M. L. Cody, J. Diamond (eds.), Ecology and Evolution of Communities. Harvard Univ Press, Cambridge, MA, USA, pp. 460–490.Google Scholar
- Eriksen, C. H., G. A. Lamberti and V. H. Resh. 1996. Aquatic insect respiration. In: R. W. Merritt, K. W. Cummins (eds.), An Introduction to the Aquatic Insects of North America, 3rd edn. Kendall/Hunt, Dubuque, IA, pp. 29–40.Google Scholar
- Hunter, M. D. and P. W. Price. 1992. Playing chutes and ladders: heterogeneity and the relative roles of bottom-up and top-down forces in natural communities. Ecology 73: 724–732.Google Scholar
- Jackson, D. A., P. R. Peres-Neto and J. D. Olden. 2001. What controls who is where in freshwater fish communities: the roles of biotic, abiotic, and spatial factors. Can. J. Fish. Aquat. Sci. 58: 157–170.Google Scholar
- Kalff, J. 2001. Limnology: Inland Water Systems. Prentice Hall, Upper Saddle River, NJ.Google Scholar
- Kitching, R. L. and R. A. Beaver. 1990. Patchiness and community structure. In B. Shorrocks, I. R. Swingland (eds.), Living in a Patchy Environment. Oxford Univ. Press, Oxford, pp. 147–176.Google Scholar
- MacArthur, R. H. and E. O. Wilson. 1967. Theory of Island Biogeography. Princeton University Press, Princeton, NJ.Google Scholar
- Paradise, C. J. 1997. Abiotic and biotic factors controlling the structure of insect treehole communities. Ph.D. Thesis, The Pennsylvania State University, State College, PA.Google Scholar
- Smith, L. L. Jr., D. M. Oseid, I. R. Adelman and S. J. Broderius. 1976. Effect of Hydrogen Sulfide on Fish and Invertebrates. Part I: Acute and Chronic Toxicity Studies. Technical report of the EPA, USEPA Res Lab 600/3/76–062a.Google Scholar
- Vetter, R. D., M. A. Powell and G. N. Somero. 1991. Metazoan adaptations to hydrogen sulphide. In: C. Bryant (ed.), Metazoan Life Without Oxygen. Chapman and Hall, London, pp. 109–128.Google Scholar
- von Ende, C. 2001. Repeated-measures analysis: growth and other time-dependent measures. In: S. M. Scheiner and J. Gurevitch (eds.) Design and Analysis of Ecological Experiments. Oxford Univ. Press, Oxford, pp. 134–157.Google Scholar
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