Kevin Donner

• MS
• Researcher at Little Traverse Bay Bands of Odawa Indians

Nearly all ecosystems have been altered by human activities, and most communities are now composed of interacting species that have not co‐evolved. These changes may modify species interactions, energy and material flows, and food‐web stability. Although structural changes to ecosystems have been widely reported, few studies have linked such change...

Background/Question/Methods Species interactions underpin the structure and function of food webs. Human alteration of ecosystems leads to changes in species composition and dominance, with cascading effects on the distribution and magnitude of interaction strengths among species, as well as flows of energy and materials in food webs. An increasi...

A more spatially continuous perspective on the ecology of stream fishes in riverscapes has emerged in the past decade, but much of this progress has been made in the realm of fish-habitat relationships, with fewer such advances regarding the trophic ecology of fishes and their role in food webs. There is a special need for such efforts, as the move...

Regulation of large rivers is often accompanied by declines in native fishes, and though these declines are often linked to altered habitat, they are frequently associated with changes in the availability of food resources and the invasion of non-native fishes. Interactions with nonnative fishes are increasingly implicated in losses of native fish...

ASSIMILATION EFFICIENCY OF UTAH SUCKER AND SPECKLED DACE FEEDING ON CHIRONOMIDAE LARVAE AT DIFFERENT TEMPERATURES N. D. HEYREND, K. C. DONNER, and C. V. Baxter Stream Ecology Center, Department of Biological Sciences, Idaho State University, Pocatello, ID Abstract Assimilation efficiency is an important, yet often overlooked component of ma...

Large dams have been constructed on rivers to meet human demands for water, electricity, navigation, and recreation. As a consequence, flow and temperature regimes have been altered, strongly affecting river food webs and ecosystem processes. Experimental high-flow dam releases, i.e., controlled floods, have been implemented on the Colorado River,...