Seasonal vertical distribution and diel migration of zooplankton in a temperate stratified lake

Biologia ◽  
2011 ◽  
Vol 66 (2) ◽  
Author(s):  
Evangelia Doulka ◽  
George Kehayias
Keyword(s):  
Vertical Distribution ◽  
Zooplankton Community ◽  
Abiotic Factor ◽  
High Concentration ◽  
Diel Migration ◽  
Four Seasons ◽  
Diel Vertical Migrations ◽  
Vertical Segregation ◽  
And Migration ◽  
The Vertical Distribution

AbstractThe investigation of the vertical distribution of the zooplankton community in the temperate Lake Trichonis during four seasons in 2005, showed the existence of vertical segregation among species, ontogenetic stages and sexes within and between the major groups. In each season, the two or three more abundant rotifer species distributed at separate depth layers, while this feature was maintained during the entire 24 h period, since no diel vertical migrations (DVM) were performed. In contrast, the crustacean community, comprised mainly by the calanoid copepod Eudiaptomus drieschi and the cladoceran Diaphanosoma orghidani, showed various patterns of DVM, being more pronounced in spring and summer. Females of E. drieschi distributed deeper than males, while the copepod nauplii were found mainly in the surface layer in all four seasons. Temperature was the most important abiotic factor affecting directly and indirectly the vertical distribution and migration of various species. During stratification, the metalimnion was the most productive layer in Lake Trichonis, having maximum values of dissolved oxygen and low transparency due to high concentration of organic matter and phytoplankton. The DVM patterns of the crustaceans indicate that the metalimnion acts probably as a daylight refuge against predation by Atherina boyeri, which is the dominant planktivorous fish in the lake.

Vertical distribution and diel migration of Crangon septemspinosa Say, 1818 (Decapoda, Caridea) on Georges Bank, northwest Atlantic

Crustaceana ◽  
2014 ◽  
Vol 87 (13) ◽  
pp. 1486-1499 ◽  
Author(s):  
Harmon Brown ◽  
Harmon Brown ◽  
Stephen M. Bollens ◽  
Harmon Brown ◽  
Stephen M. Bollens ◽  
...  
Keyword(s):  
Vertical Distribution ◽  
Water Column ◽  
Chlorophyll Concentration ◽  
Georges Bank ◽  
Lunar Periodicity ◽  
Northwest Atlantic ◽  
Diel Migration ◽  
Crangon Septemspinosa ◽  
The Vertical Distribution ◽  
Lower Water Column

We sampled for vertical distribution and possible diel vertical migration (DVM) of Crangon septemspinosa Say, 1818 on and around Georges Bank, Northwest Atlantic, between 1995 and 1999. Both juveniles and adults were found to undergo DVM, being distributed within the lower water column (and perhaps on or in the bottom) during the day, and distributed throughout the water column at night, with higher abundances seen in all depth strata at night. Differences in vertical distribution were also found based on location and chlorophyll concentration for juveniles, but no effects were seen of season, salinity, temperature, lunar periodicity, year, or copepod prey for either juveniles or adults. Variation in vertical distribution and DVM were only moderately well explained (50% of the total variance) by the above factors, suggesting that some other factor(s) not measured by us (e.g., predation) were potentially also controlling the vertical distribution and diel migration of C. septemspinosa on Georges Bank.

The Vertical Distribution and Diurnal Migration of the Crustacea Amphipoda Collected During the SOND Cruise, 1965 I. The Gammaridea

1976 ◽  
Vol 56 (2) ◽  
pp. 359-382 ◽  
Author(s):  
Michae L H. Thurston
Keyword(s):  
Cluster Analysis ◽  
Factor Analysis ◽  
Vertical Distribution ◽  
Canary Islands ◽  
Sampling Methods ◽  
Methods And Techniques ◽  
Biological Sampling ◽  
And Cluster Analysis ◽  
And Migration ◽  
The Vertical Distribution

INTRODUCTIONDetailed studies of the vertical distribution and migration of the micronekton, plankton and sonic scattering layers in an oceanic environment off Fuertaventura in the Canary Islands were made from R.R.S. ‘Discovery’ during September to December 1965. A general account, including a statement of the objectives of the cruise, has been given by Currie, Boden & Kampa (1969). Foxton (1969) has described the biological sampling methods and techniques utilized. Results of sonic scattering investigations have been published by Blaxter & Currie (1967) and Boden & Kampa (1967). The present study deals only with the pelagic amphipods, and forms a contribution to a series (Angel, 1969; Clarke, 1969b; Baker, 1970; Foxton, 1970a, b; Badcock, 1970; Roe, 1972a, b, c, d; Pugh, 1974) dealing with the distribution and migration of the major taxa sampled during the investigation. An objective summary of the plankton data utilizing factor analysis and cluster analysis has been provided by Angel & Fasham (1973, 1974).

The Vertical Distribution of Pelagic Decapods [Crustacea: Natantia] Collected on the Sond Cruise 1965 II. The Penaeidea and General Discussion

1970 ◽  
Vol 50 (4) ◽  
pp. 961-1000 ◽  
Author(s):  
P. Foxton
Keyword(s):  
Vertical Distribution ◽  
North Atlantic ◽  
Depth Distribution ◽  
Final Part ◽  
Decapod Crustaceans ◽  
Eastern North Atlantic ◽  
And Migration ◽  
The Vertical Distribution ◽  
Diurnal Migration

This paper represents the second and final part of a study of the depth distribution and diurnal migration of pelagic decapod crustaceans in an area of the eastern North Atlantic. Part I (Foxton, 1970) dealt with the Caridea; Part II now considers the Penaeidea. In the discussion the data as a whole are analysed and the resulting patterns of vertical distribution and migration discussed.

scholarly journals Aspects on the seasonal dynamics and the vertical distribution of the crustacean zooplankton community and the Dreissena polymorpha larvae in Lake Trichonis

2004 ◽  
Vol 5 (1) ◽  
pp. 19 ◽  
Author(s):  
G. KEHAYIAS ◽  
E. MICHALOUDI ◽  
A. BEXI
Keyword(s):  
Vertical Distribution ◽  
Seasonal Dynamics ◽  
Dreissena Polymorpha ◽  
Zooplankton Community ◽  
Vertical Axis ◽  
Crustacean Zooplankton ◽  
Eutrophic Lakes ◽  
Main Factors ◽  
Daphnia Cucullata ◽  
The Vertical Distribution

In Lake Trichonis 9 crustacea species and the molluscan larvae of Dreissena polymorpha were recorded during four seasonal samplings from summer 2002 to spring 2003. Mean integrated values of crustacea abundance ranged from 4.5 to 12.9 ind/L and were mainly dominated by the calanoida Eudiaptomus drieschi. The abundance values recorded, as well as the seasonal dynamics, followed the monoacmic pattern of oligotrophic lakes. However, the presence of Daphnia cucullata, a typical representative of eutrophic lakes, the decrease of the calanoida participation in the crustacea community and the succession in the cladocera community, could probably indicate a tendency towards a change of the trophic condition of Lake Trichonis.Along the vertical axis the maximum abundance of the zooplankton community was recorded in the surface 0-10 m. Mollusca larvae were present in all seasons and their highest abundance was recorded in the surface layer 0-10 m. Temperature, competition and predation seemed to be the main factors regulating vertical distribution.

The Vertical Distribution and Diurnal Migration of the Crustacea Amphipoda Collected during the SOND Cruise, 1965 II. The Hyperiidea and General Discussion

1976 ◽  
Vol 56 (2) ◽  
pp. 383-470 ◽  
Author(s):  
Michael H. Thurston
Keyword(s):  
Vertical Distribution ◽  
Canary Islands ◽  
Sampling Techniques ◽  
And Migration ◽  
Ring Net ◽  
The Vertical Distribution ◽  
Diurnal Migration

INTRODUCTIONThis paper forms the second and last part of a study of the vertical distribution and migration of pelagic Amphipoda based on material collected off Fuertaventura, Canary Islands, during the SOND Cruise in 1965. The first part (Thurston, 1976b) dealt with the Gammaridea. The data presented herein deal with the Hyperiidea, to which is added a general discussion.The background to the cruise has been given by Currie, Boden & Kampa (1969), and Foxton (1969) has described the gear and methods used. This analysis is based primarily on samples obtained from a series of 1 m2 ring-net (N 113) hauls, but has been supplemented by selected materials from modified 3 m Isaacs-Kidd Mid-water Trawl (IKMT), neuston net and 1 m2 Rectangular Mid-water Trawl (RMT 1) hauls. Thurston (1976b) has discussed the limitations of the sampling techniques as they affect the present results.

The Vertical Distribution of the Siphonophores Collected During the SOND Cruise, 1965

1974 ◽  
Vol 54 (1) ◽  
pp. 25-90 ◽  
Author(s):  
P. R. Pugh
Keyword(s):  
Vertical Distribution ◽  
Zooplankton Community ◽  
Marine Zooplankton ◽  
Ecological Importance ◽  
General Studies ◽  
The Vertical Distribution

In many of the more general studies on marine zooplankton the part played by siphonophores is frequently ignored or only given a cursory mention. However, their ecological importance is far from insignificant. In this context we are indebted to the late Mr A. K. Totton whose publications have done much to draw attention to the siphonophores and the part which they play in the zooplankton community. His synopsis of the siphonophores (Totton, 1965) is a masterly work from which any student of this fascinating group can derive much benefit.

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