The Fate of Animals in Stream Drift when Carried Into LakesUniversity of Michigan, 1944 - 24 pagine |
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100 square centimeters 25 meters 85 meters upstream abundant animal occurred animals and debris animals per 100 animals were washed aquatic Asellus communis August 11 Baetis bottom samples Brachycentrus americanus Branch of Maple bucket Burt Lake calm weather Carp Creek Ceratopogonidae chironomid Chironomus Harnischia concentration zone Corynoneura Creek and immediate creek and lake creek animals creek bottom creek current creek water delta material drift animals drift net drift samples Endochironomus sp erosion Experiment exuviae fishes Gammarus limnaeus Gastropoda immediate vicinity showing larvae level of Burt mals Map of mouth Maple River mass of debris meters lakeward mouth of Carp Nematoda number of animals Oligochaeta Orthocladiinae Prodiamesa sp region Rhagionidae sampler samples collected samples were collected sand Simuliidae Sparganophilus species Sphaeriidae spread of creek Station stream animals stream bottom stream drift summer of 1940 surface level Tanytarsus confusus Tanytarsus sp temperature transect Trichocladius Trichoptera vigorous wave action wind zone of concentration