Cladoceran Size and the Abundance of Ciliates and Rotifers  in Freshwater Zooplankton Communities
{'Code': '08010208', 'Directorate': {'Abbreviation': 'BIO', 'LongName': 'Direct For Biological Sciences'}, 'Division': {'Abbreviation': 'DEB', 'LongName': 'Division Of Environmental Biology'}}
{'SignBlockName': 'James R. Gosz', 'PO_EMAI': None, 'PO_PHON': None}
Field and laboratory studies will be conducted to test the                 hypothesis that ciliates and rotifers will be more abundant in                  freshwater zooplandton communities with only small cladoceran                   species than in those with large cladoceran species.  In situ                   enclosure experiments will test this hypothesis by adding no                    cladocerans, small cladocerans (Bosmina longirostris), or large                 cladocerans (Daphnia pulex) to natural communities of ciliates                  and rotifers.  These experiments will be supplemented by: 1)                    laboratory competition experiments to test the ability of the                   rotifer Keratella cochlearis to coexist with different-sized                    cladoceran species; and 2) laboratory experiments and                           observations on the susceptibilities of a variety of different-                 sized ciliate species to mechanical interference (damage,                       predation) from different-sized cladoceran species.  The results                of this research should be useful in understanding variation in                 the importance of ciliates and rotifers in natural communities                  and secondary effects of zooplanktivorous fish, which prey                      selectively on large cladocerans in natural communities.  This                  study will be the first to extensively investigate interactions                 between cladocerans and ciliates, and to assess the impact of                   cladocerans on ciliates in natural communities.
{'FirstName': 'John', 'LastName': 'Gilbert', 'PI_MID_INIT': 'J', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'John J Gilbert', 'EmailAddress': 'john.j.gilbert@dartmouth.edu', 'PI_PHON': '6036462366', 'NSF_ID': '000253197', 'StartDate': '06/01/1988', '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'}
{'Name': None, 'CityName': None, 'StateCode': None, 'ZipCode': None, 'StreetAddress': None, 'CountryCode': None, 'CountryName': None, 'StateName': None, 'CountryFlag': None, 'CONGRESSDISTRICT': None, 'CONGRESS_DISTRICT_PERF': '""'}
{'Code': '1128', 'Text': 'Population & Community Ecology'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1987&All=true', 'xml': '8717074.xml'}