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Essay / Research Paper Abstract
This 9 page paper discusses marine ecosystems, and particularly the presence of sharks in them. It also touches on overfishing, especially of the shark species, and what this can mean for life everywhere. Bibliography lists 9 sources.
Page Count:
9 pages (~225 words per page)
File: D0_HVSharks.rtf
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Unformatted sample text from the term paper:
it is, what special features it comprises and why its worth conserving. It also discusses the organisms that live in such an environment, with a special emphasis on sharks and
the problems they face. Discussion We begin with a discussion of what a marine ecosystem is and what special features it comprises. According to one source, the "ecosystem paradigm is
emerging as the dominant approach to managing the environment and its natural resources" (Juda and Hennessey, 2001, p. 43). This is a change from previous methods which concentrated on individual
resources; now conservationists are taking a broader perspective and considering entire systems (Juda and Hennessey, 2001). While this idea has "taken hold in a number of fields such as forestry
and fisheries," it has also become "an important management approach in the U.S. federal government and in international organizations" in dealing with marine life. The approach is used with regard
to "large marine ecosystems (LMEs)" (Juda and Hennessey, 2001, p. 43). The idea of LMEs was "developed by Sherman and Alexander" and refers to "regions of ocean space encompassing coastal
areas from river basins and estuaries on out to the seaward boundary of continental shelves and the seaward boundary of coastal current systems" (Juda and Hennessey, 2001, p. 43). The
LMEs are large areas, approximately "200,000 km2 or larger, characterized by distinct bathymetry, hydrography, productivity, and trophically dependent populations" (Juda and Hennessey, 2001, p. 43). Using these criteria, experts have
identified approximately 50 LMEs (Juda and Hennessey, 2001). The idea that LMEs can be used appropriate as units for managing marine life "follows from a substantial body of scientific investigation
that examines the interaction of fish species with one another and with the physical environment that they inhabit, as well as the effects on them of human activities" (Juda and
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