River Biota: Diversity and DynamicsPeter P. Calow As with all ecosystems, river systems involve a complex interaction of a rich diversity of micro-organisms, plants and animals with their physical and chemical environment. The river habitat presents unique problems for organisms exposed to unidirectional currents, seasonal variation in flow, and disturbance due to pollution and other human interference. The book starts with a description of the taxa, their adaptations and their ecologies, followed by chapters describing the ecosystem processes in terms of trophic interactions and the key production processes related to photosynthesis and decomposition. A major chapter then considers the principles, practices and problems associated with making reliable observations on river organisms, leading to final chapters investigating how river biota are impacted by human activity and how, in turn, they can be used as indicators of these effects in river-management programmes. |
Contents
| 1 | |
| 6 | |
3 Macrophytes | 27 |
4 Heterotrophic Microbes | 45 |
5 Invertebrates | 75 |
6 Riverine Fishes | 92 |
7 Food Webs and Species Interactions | 123 |
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Common terms and phrases
abundance acid algae algal amphipod aquatic hyphomycetes aquatic insects Aquatic Sciences areas Arsuffi assemblages assess bacteria Barlocher benthic benthos biomass biota caddisfly Calow carbon changes channel chemical colonization communities Cummins KW decomposition density detritivores detritus discharge dissolved organic distribution disturbance downstream dynamics Ecology effects environment environmental estimates factors feeding fish Fisheries and Aquatic floodplain flow food webs FPOM Freshwater Biology fungal fungi grazing growth habitat hydraulic hyphomycetes impact important increase interactions invertebrates Kendrick lake leaf litter Limnology lotic ecosystems macroinvertebrates macrophytes metabolism methods microbial Minshall models North American nutrient oxygen particles particulate organic matter patterns periphyton photosynthesis phytoplankton plankton plant populations predators predict primary productivity processing rates replicates Research result riparian river sampling seasonal sediment shredders spatial species Statzner stream ecology stream ecosystem Stream Fishes structure studies Suberkropp substrate temperature terrestrial trophic trout variability variance vegetation velocity Webster