Synopsis
We examined the short-term effects of the natural catastrophic collapse of a beaver dam on downstream benthic insect density and fish community structure in a headwater tributary of the Mississippi River. The catastrophic collapse of the dam and ensuing flash flood resulted in a dramatic (< 90%) decrease in benthic insect density in riffle and pool habitats. Sixty days after collapse of the dam, insect densities in riffles were 62% of pre-collapse densities. Insect recolonization of pools was slower than for riffles; 60 days after collapse of the dam insect densities in pools were 8% of pre-collapse levels. Collapse of the beaver dam altered the structure of the downstream fish community by causing a short-term (2–4 days) influx of pond species, resulting in a brief increase in species richness and abundance. Fish species richness and abundance then decreased for 4–60 days to levels below those prior to the collapse.
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References cited
Fisher, S.G., L.J. Gray, N.B. Grimm & D.E. Busch. 1982. Temporal succession in a desert stream ecosystem following flash flooding. Ecol. Monog. 52: 93–110.
Forman, R.T.T. & M. Godron. 1986. Landscape ecology. John Wiley, New York. 619 pp.
Gray, L.J. 1981. Species composition and life histories of aquatic insects in a lowland Sonoran Desert stream. Amer. Midl. Nat. 106: 229–241.
Gray, L.J. & S.G. Fisher. 1981. Postflood recolonization pathways of macroinvertebrates in a lowland Sonoran Desert stream. Amer. Midl. Nat. 106: 249–257.
Hoopes, L. 1974. Flooding, as a result of Hurricane Agnes, and its effect on a macrobenthic community in an infertile headwater stream in central Pennsylvania. Limnol. Oceanog. 19 853–857.
Johnston, C.A. & R.J. Naiman. 1987. Boundary dynamics at the aquatic-terrestrial interface: the influence of beaver and geomorphology. Land. Ecol. 1: 45–57.
Minshall, G.W., D.A. Andrews & C.Y. Manuel-Faler. 1983. Application of island biogeographic theory to streams: macroinvertebrate recolonization of the Teton River, Idaho. pp. 279–298. In: J.R. Barnes & G.W. Minshall (ed.) Stream Ecology: Application and Testing of General Ecological Theory Plenum Press, New York.
Naiman, R.J. & J.M. Melillo. 1984. Nitrogen budget of a subartic stream altered by beaver (Castor canadensis). Oecologia 62: 150–155.
Naiman, R.J., J.M. Melillo & J.E. Hobbie. 1986. Ecosystem alteration of boreal forest streams by beaver (Castor canadensis). Ecology 67: 1254–1269.
Naiman, R.J., C.A. Johnston & J.C. Kelley. 1988. Alteration of North American streams by beaver. Bioscience 38: 753–762.
Schlosser, I.J. 1982. Fish community structure and function along two habitat gradients in a headwater stream. Ecol. Monog. 52: 395–414.
Schlosser, I.J. & K.K. Ebel. 1989. Effects of flow regime and cyprinid predation on a headwater stream. Ecol. Monog. 59: 41–57.
Siegfried, C.A. & A.W. Knight. 1977. The effects of washout in a Sierra foothill stream. Amer. Midl. Nat. 98: 200–207.
Thorup, J. 1970. The influence of a short-termed flood on a springbrook community. Archiv für Hydrobiol. 66: 447–457.
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Stock, J.D., Schlosser, I.J. Short-term effects of a catastrophic beaver dam collapse on a stream fish community. Environ Biol Fish 31, 123–129 (1991). https://doi.org/10.1007/BF00001012
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DOI: https://doi.org/10.1007/BF00001012