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Give two examples of each trophic category that can be found in your town, city, or country.
The first trophic level is Producers: Organisms that capture energy from the sun or chemical reactions to convert carbon dioxide to organic matter; most producers are green plants.(Boorse,Wright,2011) The second trophic level is Consumers which are [ organisms that derive their energy from feeding on other organisms or their products. ]
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Asked 10/16/2012 11:27:02 AM
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What is biodiversity? Is it important? Relate biodiversity to the trophic categories.
Weegy: Over the past decade, [ accelerating rates of species extinction have prompted an increasing number of studies to reduce species diversity experimentally and examine how this alters the efficiency by which communities capture resources and convert those into biomass1, 2. So far, the generality of patterns and processes observed in individual studies have been the subjects of considerable debate3, 4, 5, 6, 7. Here we present a formal meta-analysis of studies that have experimentally manipulated species diversity to examine how it affects the functioning of numerous trophic groups in multiple types of ecosystem. We show that the average effect of decreasing species richness is to decrease the abundance or biomass of the focal trophic group, leading to less complete depletion of resources used by that group. At the same time, analyses reveal that the standing stock of, and resource depletion by, the most species-rich polyculture tends to be no different from that of the single most productive species used in an experiment. Of the known mechanisms that might explain these trends, results are most consistent with what is called the |[lsquo]|sampling effect|[rsquo]|, which occurs when diverse communities are more likely to contain and become dominated by the most productive species. Whether this mechanism is widespread in natural communities is currently controversial. Patterns we report are remarkably consistent for four different trophic groups (producers, herbivores, detritivores and predators) and two major ecosystem types (aquatic and terrestrial). Collectively, our analyses suggest that the average species loss does indeed affect the functioning of a wide variety of organisms and ecosystems, but the magnitude of these effects is ultimately determined by the identity of species that are going extinct. ] (More)
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Asked 10/16/2012 11:35:13 AM
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Is biodiversity important?
Weegy: Biodiversity is important because it is the diversity of species in an area. It is really important to preserve biodiversity because bio diverse areas provide us with food, clean air, medicines, and beauty. (More)
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Asked 10/16/2012 11:39:23 AM
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