DIVERSIDAD DE ROTIFEROS PDF

Por esta razón, las zonas litorales pueden presentar una mayor biodiversidad. En este trabajo se analizó la distribución horizontal de tecamebas y rotíferos en. Annales d Limnologie – José de Paggi SB (a) Diversidad de Rotiferos Monogononta en el Bajo Paraná. Tesis Doctoral, Universidad Nacional . DIVERSIDAD Y ABUNDANCIA DE COMUNIDADES ZOOPLANCTONICAS cladóceros, Copépodos, Diversidad alfa, diversidad beta, Limnologia, rotíferos .

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Revista Chilena de Historia Natural Effect of macrophytes and food resources on the horizontal distribution of testate amoebae and rotifers in an Andean-Patagonian lake. Por un lado, Keratella cochlearis, Synchaeta spp.

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The presence of macrophytes in the littoral zone of lakes produces particular conditions including higher resource availability for consumers. For this reason, the littoral zone is generally the area with the highest diversity of lakes and rivers. In this work we studied the horizontal distribution of testate amoebae and rotifers in Lago Escondido Argentina in relation to food resources availability.

The study was carried out along a north-south transect that includes the littoral and the pelagic zone of the lake. Phytoplankton and zooplankton were sampled during summer and spring in five sampling stations: Rotifers and testate amoebae, as well as phytoplanktonic algae abundance and biomass were estimated.

Diversudad dominated diversisad pelagic zone and was mainly composed by nanoflagellates while net phytoplankton prevailed in the littoral zone and was composed by diatoms, cyanophytes and chlorophytes. The highest number of species and diversity of testate amoebae and rotifers were observed in the littoral stations; nevertheless, no significant differences between the zones colonized by different macrophytes were observed.

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The CCA analysis showed four different groups. Keratella cochlearis, Synchaeta spp. On the other hand, rotifers like Trichocerca spp. Finally, the rotifer Synchaeta spp.

A revised and updated checklist of Monogononta rotifers from Argentina | Ferrando | Check List

Summarizing, in Lago Escondido, food resources could be an important diversidd driving testate amoeba and rotifer distribution. Therefore the major role of macrophytes for this small-bodied zooplankton is food supply through an increment of net phytoplankton.

La estructura del aparato masticador de estos organismos condiciona su dieta. En cada muestreo se establecieron cinco estaciones de muestreo a lo largo de una transecta con sentido norte-sur Fig.

Dos de las estaciones se situaron en la zona colonizada por S. Otras dos estaciones se ubicaron en la zona colonizada por P. Estas determinaciones se llevaron a cabo dentro de la media hora posterior a la colecta de las muestras. Location of Lake Escondido, and sampling stations. Las estaciones ubicadas en la zona de Schoenoplectus californicus El y E5, Fig. Divesridad estaciones litorales en la zona de S. Abundancia A y Biovolumen B de nanoplancton y fitoplancton de red en las diferentes estaciones de muestreo.

Nanoplankton and net phytoplankton abundances A and bio volume B at the sampling stations. Abundancia de tecamebianos en las El, E2, E4 y E5. Testate amoebae abundances in El, Rotieros, E4 and E5.

Values of the E3 are not shown because of their low abundances indL 1. Para ambos grupos se observaron diferencias significativas entre rotigeros zonas del lago Tabla 6. Testate amoebae and rotifer diversity H: Median, quartiles, and data outside 10th and 90th percentiles are indicated for each sampling station.

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Las variables ambientales se encuentran indicadas por flechas. CCA canonical correspondence analysis of species and sampling stations in relation to the nanoplankton and net phyto-plankton abundance environmental variables. GrospietschOgden Keratella cochlearis, Polyarthra vulgaris, Synchaeta pectinata, Synchaeta sp. Esta especie es raptora y se caracteriza por utilizar una estrategia de emboscada para capturar sus presas Nogrady et al.

Lepadella ovalis, Colurella uncinata, Mytilina ventralis y Trichotria tetractis. Por otra parte, Duggan et al. Debido a que P. Verhandlungen Internationale Vereinigung Limnologie International Revue der gesamtem Hydrobiologie Archiv fiir Hydrobiologie Suppl.

Canadian Journal of Fisheries viversidad Aquatic Sciences Argentina and some consideration about the PEG Model. Wahlb in a pond in south Bohemia. Schweizerbart’sche Verlagsbuchhandlung, Stuttgart, Deutschland. Limnology and Oceanography Aquatic Microbial Ecology Research and Management 3: Revista Brasileira de Biologia Archiv fiir Hidrobiologie Beihtrage Ergebnisse der Limnologie Journal of Protozoology Archiv fiir Hidrobiologie Beihtrage Ergebnisse der Limnologie 8: Archiv fiir Hydrobiologie Wetzel RG ed Periphyton in freshwater ecosystems: Junk Publishers, The Hague, Netherlands.

Archiv fur Hydrobiologie Journal of Plankton Research Acta Phytog eographica Suecica Canadian Journal of Botany Recibido el 9 de noviembre de ; aceptado el 4 de enero de ABSTRACT The presence of macrophytes in the littoral zone of lakes produces particular conditions including higher resource availability for consumers.