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Issues in Ecology, Issue 04: Biodiversity and Ecosystem Functioning
In this report, biodiversity and its relevance to the ecosystems that support humanity is discussed. Ecosystem functioning is defined as the collective activities of all biota within an ecosystem and how they affect its chemical and physical factors; therefore, it can be negatively impacted by decreases in biodiversity-the wide variety of life forms inhabiting the planet. The ecological and...
Publisher: EcoEd Digital Library
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Vulnerability of High Diversity Habitats to Introduced Species
This Issue focuses on a research article by Stohlgren et al. (2003) and two responses to it that were published in Frontiers in Ecology and the Environment. The article discusses the ecology of invasive species and the vulnerability of high diversity communities to invasives. Students, like many others, might assume that habitats with low plant diversity are more vulnerable to invasions of...
Publisher: EcoEd Digital Library
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Effects of Plant Biodiversity on Ecosystem Productivity within a Savannah Grassland Community
This Data Set focuses on the question: How does plant biodiversity in a grassland savannah community affect ecosystem productivity? To investigate this question, students use create graphs using seven years of data collected at Cedar Creek during an experiment set up to examine the effects of manipulating species richness on plant productivity and biomass. Cedar Creek Natural History Area is an...
Publisher: EcoEd Digital Library
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Impact of Cowbird Brood Parasitism on an Avian Community
This data set can be used to determine the effect cowbird brood parasitism has on a songbird population. It includes notes for students as well as instructions for faculty.
Publisher: EcoEd Digital Library
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A community of wildflowers growing in a restored prairie in southwestern Wisconsin.
A community of wildflowers growing in a restored prairie in southwestern Wisconsin. The community pictured was open to foraging by meadow voles (Microtus pennsylvanicus), resulting in vegetation dominated by species that voles typically do not consume, particularly black-eyed Susans (Rudbeckia subtomentosa). In contrast, experimental plots that excluded voles were dominated by plant species that...
Publisher: EcoEd Digital Library
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http://www.esajournals.org/doi/abs/10.1890/03-5182
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