Between-year variations in the development of crustacean zooplankton in the Norwegian subalpine lake, Øvre Heimdalsvatn

Author(s):  
Petter Larsson ◽  
Heidi Hansen ◽  
Linda Kristin Bjørnstad Helland
Hydrobiologia ◽  
2010 ◽  
Vol 642 (1) ◽  
pp. 61-70 ◽  
Author(s):  
Petter Larsson ◽  
Heidi Hansen ◽  
Linda Kristin Bjørnstad Helland

Author(s):  
Souta AOMORI ◽  
Megumu FUJIABAYASHI ◽  
Kunihiro OKANO ◽  
Yoshihiro TAKADA ◽  
Naoyuki MIYATA

2004 ◽  
Vol 61 (11) ◽  
pp. 2111-2125 ◽  
Author(s):  
Richard P Barbiero ◽  
Marc L Tuchman

The crustacean zooplankton communities in Lakes Michigan and Huron and the central and eastern basins of Lake Erie have shown substantial, persistent changes since the invasion of the predatory cladoceran Bythotrephes in the mid-1980s. A number of cladoceran species have declined dramatically since the invasion, including Eubosmina coregoni, Holopedium gibberum, Daphnia retrocurva, Daphnia pulicaria, and Leptodora kindti, and overall species richness has decreased as a result. Copepods have been relatively unaffected, with the notable exception of Meso cyclops edax, which has virtually disappeared from the lakes. These species shifts have for the most part been consistent and equally pronounced across all three lakes. Responses of crustacean species to the Bythotrephes invasion do not appear to be solely a consequence of size, and it is likely that other factors, e.g., morphology, vertical distribution, or escape responses, are important determinants of vulnerability to predation. Our results indicate that invertebrate predators in general, and invasive ones in particular, can have pronounced, lasting effects on zooplankton community structure.


1990 ◽  
Vol 24 (9) ◽  
pp. 1367-1372 ◽  
Author(s):  
Norman D. Yan ◽  
Gerald L. Mackie ◽  
Peter J. Dillon

2006 ◽  
Vol 51 (2) ◽  
pp. 263-273 ◽  
Author(s):  
CRISTIANA CALLIERI ◽  
EMANUELE CARAVATI ◽  
GIUSEPPE MORABITO ◽  
ALESSANDRO OGGIONI

1999 ◽  
Vol 56 (12) ◽  
pp. 2420-2432 ◽  
Author(s):  
Bruno A Zakardjian ◽  
Jeffrey A Runge ◽  
Stephane Plourde ◽  
Yves Gratton

As an essential step in modeling the influence of circulation on the population dynamics of marine planktonic copepods, we define a simple formulation of swimming behavior that can be used in both Eulerian and Lagrangian models. This formulation forces aggregation of the population toward a preferential depth and can be stage specific and time varying, thus allowing description of either diurnal or seasonal vertical migration. We use the formulation to examine the interaction between the circulation and vertical distribution in controlling horizontal distribution of the common planktonic copepod Calanus finmarchicus in the Lower St. Lawrence Estuary, Canada. We first introduce diel migration into a simple one-dimensional model and then into a model of residual two-dimensional circulation patterns representative of conditions encountered in the Lower St. Lawrence Estuary. Results from the latter indicate that interactions between circulation and stage-specific swimming behaviors are the main mechanisms for aggregation of planktonic crustaceans at the head of the Laurentian Channel and highlight the implications of flushing of the surface-dwelling young stages for the population dynamics of C. finmarchicus in the Lower St. Lawrence Estuary.


2017 ◽  
Vol 62 (6) ◽  
pp. 2745-2758 ◽  
Author(s):  
Elisabeth L. Clifford ◽  
Dennis A. Hansell ◽  
Marta M. Varela ◽  
Mar Nieto-Cid ◽  
Gerhard J. Herndl ◽  
...  

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