River conservation and terrestrial mammals: key ecological processes

Abstract

Key ecological processes affecting interactions between rivers and terrestrial mammals are identified and explained, using flood plains of Alaska as examples of relatively pristine systems. Both coastal (southeast Alaska) and interior Alaska examples are used. Coastal Alaskan rivers tend to be relatively short, flashy, rain-driven systems, whereas interior Alaska rivers tend to be large, glacial-melt-driven systems. Seven key processes were identified: (1) flooding, (2) erosion/deposition, (3) dam building by beaver (Castor canadensis), (4) fish (especially salmon, Oncorhynchus spp.) production. (5) translocation of marine-derived nutrients, (6) nitrogen fixation by alder (Alnus spp.), and (7) herbivory by moose (Alces alces). Three key conservation measures are identified as being most important: (1) upland management practices, (2) streamside buffers and flood plain protection, and (3) trans-boundary agreements and international treaties.

Citation

Hanley, Thomas A. 2008. River conservation and terrestrial mammals: key ecological processes. In: 2008 World Wetland Day commemorative symposium. Seoul, Korea: Korean Wetlands Society: 71-75