Variaciones de abundancia y biomasa del zooplancton en un embalse tropical oligo-mesotrófico del norte de Venezuela

Merayo, Sandra; González, Ernesto J.
June 2010
Revista de Biología Tropical;jun2010, Vol. 58 Issue 2, p603
Academic Journal
Zooplankton abundance in reservoirs is mainly determined by the speed and content of the water, but relatively little is known regarding tropical reservoirs. We studied the seasonal and spatial distribution of zooplankton abundance and biomass along the longitudinal axis of Clavellinos reservoir, northern Venezuela, from October 2006 to September 2007. Zooplankton was collected from the oxygenated layer using a plankton net. A total of 16 taxa were identified: Copepoda, Cladocera, Rotifera, Ostracoda and Diptera. Thermocyclops decipiens (Copepoda, Cyclopoida) dominated the community, while rotifers were the most diverse, with 10 species. Zooplankton abundance varied from 31 to 101ind/L in E1, 36 to 84ind/L in E2, and, from 30 to 250ind/L in E3. Biomass varied from 97.4 to 1406.3μg/l in E1, 108.5 to 397.2μg/l in E2, and from 25.9 to 763.9μg/l in E3. This zooplankton community seems to respond to environmental variations in the reservoir, rather than to variations in resource availability.


Related Articles

  • CLADOCERA AND COPEPODA FAUNA OF ASLANTAÅžDAM LAKE (OSMANIYE-TURKEY). Bozkurt, Ahmet; Göksu, Münir Ziya Lugal; Altun, Ayhan // Journal of FisheriesSciences.com;2009, Vol. 3 Issue 4, p285 

    Quantitative and qualitative examinations of zooplankton in Aslantas Dam Lake were studied between April 2001 and March 2002. It was established that total zooplankton in the reservoir is being represented with 18 species belonging to Cladocera and Copepoda. Number of the species belonging to...

  • Do the long-term changes in zooplankton biomass indicate changes in fish stock? Hrbáček, Jaroslav; Brandl, Zdenék; Straškraba, Milan // Hydrobiologia;Sep2003, Vol. 504 Issue 1-3, p203 

    The narrow, 53.5 m deep and 42 km long Slapy reservoir was sampled at 3-week intervals at a standard sampling station 9 km from the dam during the years 1964–2001. The chlorophyll-a increased relatively more than the total phosphorus concentration. The relative increase in the biomass of...

  • The dominant copepods Senecella siberica and Limnocalanus macrurus in the Ob Estuary: ecology in a high-gradient environment. Drits, A.; Pasternak, A.; Nikishina, A.; Semenova, T.; Sergeeva, V.; Polukhin, A.; Flint, M. // Polar Biology;Sep2016, Vol. 39 Issue 9, p1527 

    Intensive transformation and sedimentation of suspended matter from riverine runoff occur in estuarine frontal zones. The mesozooplankton community plays an important role in these processes. In the Ob Estuary, the dominant copepods Limnocalanus macrurus and Senecella siberica form dense local...

  • KÃœRK ÇAYI (ELAZIÄž-TÃœRKÄ°YE) ZOOPLANKTONU. Saler, Serap; İpek, Necla; Aslan, Serkan // Journal of FisheriesSciences.com;2011, Vol. 5 Issue 3, p219 

    Zooplankton of Kurk stream, one of the most important surface water reservior flows into Hazar Lake was observed monthly between February 2007 - January 2008. At the end of the research, 9 species from Rotifera, 2 species from Cladocera, 2 species from Copepoda were identified. Rotifers were...

  • Depth-selection behavior and longevity in Daphnia: an evolutionary test for the predation-avoidance hypothesis. Dawidowicz, Piotr; Prędki, Piotr; Pietrzak, Barbara // Hydrobiologia;Sep2013, Vol. 715 Issue 1, p87 

    The classic evolutionary theory of senescence predicts that long lifespan evolves under low risk of extrinsic mortality. As lakes present planktonic animals with vertical gradients of mortality risk associated with fish predation, we expected the individual lifespan of Daphnia of the...

  • MicroNESS: an innovative opening-closing multinet for under pack-ice zooplankton sampling. Guglielmo, L.; Arena, G.; Brugnano, C.; Guglielmo, R.; Granata, A.; Minutoli, R.; Sitran, R.; Zagami, G.; Bergamasco, A. // Polar Biology;Dec2015, Vol. 38 Issue 12, p2035 

    Quantitative sampling of zooplankton communities from ice-covered waters presents many technical and logistic difficulties. Currently available techniques enable only vertical tows through relatively small ice holes, and the filtered volumes are generally low. For these reasons, we developed and...

  • Crustacean plankton community (Crustacea: Copepoda and Cladocera) in gypsum karst lakes and their relation to abiotic parameters. Stanković, Igor; Ternjej, Ivančica; Mihaljević, Zlatko; Furač, Lidija; Kerovec, Mladen // Hydrobiologia;May2011, Vol. 666 Issue 1, p145 

    Two gypsum karst lakes and one non-gypsum karst lake were studied for copepod and cladoceran species composition in relation to specific habitat characteristics. The investigation was conducted from March to June 2007. Four copepod and six cladoceran species were recorded. Gypsum karst lakes are...

  • ASÄ° NEHRÄ°(HATAY-TÃœRKÄ°YE) ZOOPLANKTON SÃœKSESYONU. Bozkurt, Ahmet; Güven, Süleyman Ertuğrul // Journal of FisheriesSciences.com;2010, Vol. 4 Issue 4, p337 

    In the study, zooplankton succession and zooplankton species diversity of Asi River were researched with weekly sampling between 12.05.2005 and 05.05.2006, and in the study, totally 89 taxa were identified including 58 species from Rotifera, 16 species from Cladocera and 15 species from...

  • Zooplankton fauna of Lake Ä°znik (Bursa, Turkey). Yağci, Meral Apaydin; Ustaoğlu, Mustafa Ruşen // Turkish Journal of Zoology;May2012, Vol. 36 Issue 3, p341 

    In the present study the zooplankton fauna of Lake Ä°znik (Bursa) was investigated during January-December 2006. A total of 54 taxa--35 taxa from rotifers, 14 taxa from cladocerans, and 5 taxa from copepods--were identified in Lake Ä°znik. Brachionus calyciflorus, B. angularis, Notholca...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics