Rotifer Threshold Food Concentrations
{'Code': '08010207', 'Directorate': {'Abbreviation': 'BIO', 'LongName': 'Direct For Biological Sciences'}, 'Division': {'Abbreviation': 'DEB', 'LongName': 'Division Of Environmental Biology'}}
{'SignBlockName': 'Gregory J. McCants', 'PO_EMAI': None, 'PO_PHON': None}
Rotifers are small planktonic animals commonly occurring and            often dominant in the zooplankton of offshore marine                            environments, estuaries, slow-moving rivers, and freshwater                     lakes.  They are important in the food chains of most aquatic                   ecosystems.                                                                             The experimentally determined relationships proposed in this            study will increase our understanding of the mechanisms                         determining the composition and structure of freshwater                         zooplankton communities in nature.  This study should help                      explain patterns of species distribution, size, and morphology                  (e.g. body spines, mucus sheaths, flattened vs. oblate bodies)                  which can not be explained with current theory.  Each species has               a body size and form that may influence its hydrodynamic                        characteristics and, hence, affect the energetic balance between                swimming and food collection.  This may affect reproduction at                  low food levels.                                                                        The kinds of species which can maintain positive population             growth rates in low food environments will affect energy flow and               food web relationships.  The species structure of the                           zooplankton, in turn, affects the production of organisms higher                in the food chain.  Therefore, the basic research proposed in                   this study has direct application for understanding fundamental                 zooplankton community organization which, ultimately, affects                   energy flow and, hence, fish production for human or animal                     consumption.
{'FirstName': 'Richard', 'LastName': 'Stemberger', 'PI_MID_INIT': 'S', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Richard S Stemberger', 'EmailAddress': 'stem@dartmouth.edu', 'PI_PHON': '6036462792', 'NSF_ID': '000337902', 'StartDate': '10/15/1987', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Dartmouth College', 'CityName': 'HANOVER', 'ZipCode': '037552170', 'PhoneNumber': '6036463007', 'StreetAddress': '7 LEBANON ST', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'New Hampshire', 'StateCode': 'NH', 'CONGRESSDISTRICT': '02', 'CONGRESS_DISTRICT_ORG': 'NH02', 'ORG_UEI_NUM': 'EB8ASJBCFER9', 'ORG_LGL_BUS_NAME': 'TRUSTEES OF DARTMOUTH COLLEGE', 'ORG_PRNT_UEI_NUM': 'EB8ASJBCFER9'}
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{'Code': '1127', 'Text': 'Evolutionary Processes'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1987&All=true', 'xml': '8705266.xml'}