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LifeCycle Studies on Chaoborus
Diel Vertical Migration of Chaoborus
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24-hr period adults August background radiation benthic benthic population bladders boat Chaoborus larvae Chaoborus population Chippewa County chironomids Cond conditions of ice Conductivity micromhos Corethra counts per minute Cox Hollow Lake Deonier depth recorder descent of chaoborids diel vertical diel vertical migration dipterans dissolved oxygen echo sounder echo trace echogram of Tub epilimnion Fish echoes fourth instar larvae graph Hasler head-capsule measurements Helmet Lake hypolimnetic hypolimnion ice cover isotope Juday July June kettle lake laboratory Lake Mendota light intensity Limnological measurements lower maximum meter midwater level morning descent Mud Lake mud-water interface night nocturnal limnetic organisms PH ppm plankton punctipennis from Tub pupae quartile curves radioactivity reciprocal megohms release represents sampling date shore showing evening ascent Stationary echogram Stewart's Dark Lake sunrise surface waters Table Temp temperature thermocline Transect echogram transmission mark trap Tub and Stewart's Tub Lake tube vertical movement water column Wisconsin zooplankton