Ecosystem Ecology
Language: English
Pages: 521
ISBN: 0444534660
Format: PDF / Kindle (mobi) / ePub
Jorgensen's Ecosystem Ecology provides a thorough and comprehensive overview of the world’s aquatic and terrestrial ecosystems. This derivative volume based on the best-selling Encyclopedia of Ecology (published 2008) is the only book currently published that provides an overview of the world’s ecosystems in a concise format.
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Than population size that is maximized in an ecosystem, as density (number per unit area) is inversely proportional to the weight of the organisms. Of course the relationship is complex. A given mass of mice would not contain the same exergy or number of individuals as an equivalent weight of elephants. Also, genome differences (example 1) and other factors would figure in. Later we will discuss exergy dissipation as an alternative objective function proposed for thermodynamic systems. If this.
Entire ecosystem (see the section entitled ‘Whole ecosystem experiments’), a sig nificant advancement which continues to inform ecosystem studies today. Figure 2 Sir Arthur G. Tansley coined the term ecosystem in 1935. From New Phytologist 55: 145, 1956. Ecosystem Components and Properties dynamic, interacting systems, Tansley’s ecosystem con cept transformed modern ecology. It led directly to considerations of energy flux through ecosystems and the pathbreaking, now classic work of R. L.
Ecosystems provide one fourth to one third of the primary production required for fisheries. This high fraction leaves little margin for error in maintaining resilient ecosystems and sustainable fisheries. Large-Scale Shifts in Ecosystems A growing body of empirical evidence suggests that ecosystems may shift abruptly among alternative states. In fact, large scale shifts in ecosystems have been observed in lakes, coral reefs, woodlands, des serts, and oceans. For example, a distinct shift.
Analysis approach in the late 1970s, and he, along with his colleagues, has expanded the analysis to reveal many insightful, holistic properties of ecosystem organization. ENA follows along the synecology perspective introduced by E. P. Odum which is concerned with interrelations of material, energy, and information among system components. ENA starts with the assumption that a system can be represented as a network of nodes (compartments, ver tices, components, storages, objects, etc.) and the.
Mediated by a nonliving resource, and that a species can potentially exert a selective force on another species through nontrophic interactions. It should also be noted that in nature many species are very well adapted to modify their community and habitat (e.g., beavers by changing the habitat’s hydrological regime, humans by initiating dramatic changes in global climate and geo chemical fluxes, earthworms by increasing aeration and redistributing organic matter in soil, etc.). Changes in.