Skip to Main Content
Effects of invertebrates in lotic ecosystem processesAuthor(s): J.B. Wallace; J.J. Jr. Hutchens
Source: In: Invertebrates as Webmasters in Ecosystems edited by Coleman, D.C. and Hendrix, P.P., January 2000
Publication Series: Miscellaneous Publication
PDF: View PDF (3.9 MB)
DescriptionFreshwater invertebrates perform many roles in ecosystem processes (Palmer et al., 1997) and these roles are frequently associated with a diverse array of feeding habits which have been organized into functional feeding groups (FFGs). Wallace and Webster (1996) reviewed many roles ofFFGs in stream ecosystems. Streams differ markedly from most ecosystems in that the unidirectional flow of water through areas of different relief, lithology, runoff and large woody debris generates an array of channel forms (Brussock et al., 1985). These various channel forms result in many diverse habitats (Frissell et al., 1986), which place many constraints on organisms and the type and form of their food resources. This physical heterogeneity,including substrate and current velocity, is important in that it influences many aspects of stream ecology including nutrient dynamics, biotic diversity of animals, functional feeding groups, predator-prey interactions, refugia from disturbances, micro- and macroflora,organic matter retention and transport, as well as local secondary production (see Wallace and Webster, 1996).
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationWallace, J.B.; Hutchens, J.J. Jr. 2000. Effects of invertebrates in lotic ecosystem processes. In: Invertebrates as Webmasters in Ecosystems edited by Coleman, D.C. and Hendrix, P.P., January 2000
- Terrestrial litter inputs as determinants of food quality of organic matter in a forest stream
- Effects of litter exclusion and wood removal on phosphorus and nitrogen retention in a forest stream
- The significance of suspended organic sediments to turbidity, sediment flux, and fish-feeding behavior
XML: View XML