Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"Population-Environmental Aspects"”.
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Population Dynamics of Copepoda and Cladocera in an Iowa farm pond, Summer 1973
… location or density. Conclusion. All of the populations varied greatly, but food had the greatest direct effect upon the densities. Recommendations. It would be necessary to conduct a long term study of the same pond so that a complete understanding could be obtained of development, growth. …
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Benthic Population Distributions in Red Rock Reservoir, Iowa Summer 1972
… Factors which appeared to influence benthic population distributions include substrate organic content and particle size, low water retention time and presence of the old river channel. Recommendations. Future studies should determine the exact species composition of the benthos and how life …
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Overcoming Barriers to Local Food Access: A Case Study
<p>This thesis focuses on the idea that food insecurity and access are real issues in the lives of many Americans. Simply stated, food insecurity is when a person does not have enough food to eat or does now know where his/her next meal is coming from. More importantly when looking at food …