Читать книгу Ecology of North American Freshwater Fishes - Stephen T. Ross Ph. D. - Страница 14

PART TWO

Formation, Maintenance, and Persistence of Local Populations and Assemblages

Chapters in Part 1 show how fish populations and assemblages are shaped by broadscale geological and climatic factors over broad temporal and spatial scales. The focus now turns to how local fish assemblages and populations are influenced by regional faunas, by the general nature of the landscape in which they occur, and by the interplay of temporal and spatial habitat heterogeneity (see the following figure). Instead of the mega- and macroscale domains (sensu, Delcourt and Delcourt 1988) that span temporal and spatial scales from 10,000 to billions of years and 100s to thousands of kilometers, the focus now is on meso- and microscale domains of 1–10,000 years and meters to tens of kilometers.

Examples of filters affecting the formation of local fish assemblages from a regional species pool and their associated chapters.