scholarly journals Population Dynamics and Diel Changes in Vertical Distribution of the Cladoceran Holopedium gibberum and Bosmina longirostris in Lake Ozenuma.

1992 ◽  
Vol 53 (1) ◽  
pp. 35-45
Author(s):  
Takayuki HANAZATO ◽  
Seiichi NOHARA
Keyword(s):  
Population Dynamics ◽  
Vertical Distribution ◽  
Bosmina Longirostris ◽  
Diel Changes

Population Dynamics of Limnetic Cladocera in a Beaver Pond

1975 ◽  
Vol 32 (3) ◽  
pp. 341-346 ◽  
Author(s):  
Judith K. Kwik ◽  
John C. H. Carter
Keyword(s):  
Population Dynamics ◽  
Embryonic Development ◽  
Carrying Capacity ◽  
Sampling Errors ◽  
Beaver Pond ◽  
Bosmina Longirostris ◽  
Georgian Bay ◽  
Development Times ◽  
Different Temperatures ◽  
Ceriodaphnia Quadrangula

In a small, shallow, predation free beaver pond near Georgian Bay, Ontario Ceriodaphnia quadrangula was monacmic and Daphnia ambigua and Bosmina longirostris triacmic. Each species peaked and declined rapidly, presumably overshooting the carrying capacity of a food limited environment. Embryonic development times of each species at different temperatures was determined in the laboratory and fitted with Bĕlahrádek’s function. Calculated instantaneous rates of birth and death were normal for D. ambigua and C. quadrangula but too low to account for the rapid fluctuations in numbers of B. longirostris, suggesting occasional gross sampling errors. Bosmina longirostris may periodically abandon the limnoplankton for a benthic existence thus avoiding capture.

The ecology of Honey Creek, Oklahoma: population dynamics and drifting behavior of three species of Simulium (Diptera: Simuliidae)

1977 ◽  
Vol 55 (2) ◽  
pp. 325-337 ◽  
Author(s):  
William K. Reisen
Keyword(s):  
Population Dynamics ◽  
Water Temperature ◽  
Larval Development ◽  
Late Summer ◽  
Diel Changes ◽  
Egg Maturation ◽  
South Central ◽  
Early Fall

The population dynamics and drifting behavior of Simulium virgatum, S. trivittatum, and Simulium species A were investigated at nine stations in a south-central Oklahoma limestone stream from June 1972 through August 1973. Simulium species A abundance paralleled vernal periphyton increases and exhibited characteristic midsummer and midwinter decreases, while S. virgatum and S. trivittatum were most prevalent during late summer and early fall. Simulium species A and S. virgatum oviposited during the evening crepuscular period. In Simulium species A synchronous egg maturation and eclosion apparently imparted a degree of drift rhythmicity in the early instars which progressively degenerated during larval development. Simulium virgatum drift rates were highest during midafternoon and were correlated with diel changes in water temperature. Simulium trivittatum drift rates were highest during the evening and morning and lowest during the afternoon.

Diel changes in the vertical distribution of juvenile fish in the Zeeschelde Estuary

1999 ◽  
Vol 54 (6) ◽  
pp. 1329-1333 ◽  
Author(s):  
J. Maes ◽  
J. Pas ◽  
A. Taillieu ◽  
P. A. Van Damme ◽  
F. Ollevier
Keyword(s):  
Vertical Distribution ◽  
Juvenile Fish ◽  
Diel Changes ◽  
The Vertical Distribution
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