Vertical distribution of zooplankton in a pampean shallow lake.

CLAPS, M. C.; GABELLONE, N.; BENÍTEZ, H. H.

Melbourne

Congreso; XXVIII International Congress of Theoretical and Applied Limnology, SIL-2001.c; 2001

<!-- /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";} @page Section1 {size:595.3pt 841.9pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:35.4pt; mso-footer-margin:35.4pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> <!-- /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";} @page Section1 {size:595.3pt 841.9pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:35.4pt; mso-footer-margin:35.4pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> San Miguel del Monte pond is a small, shallow eutrophic pond. The investigation was beginning during a turbid water period, until its replacement by a clear water period, due to the total basin colonization Potamogeton pectinatus. Rotifers were dominant in all the vertical profile in summer. Protozoans were only abundant with oxygen depletion condition nearly the sediments in winter. Planktonic cladocerans appeared during maximum macrophyte growth in summer, in the middle of the profile. Copepods were present all year with minimum densities at superficial levels. The zooplankton peak occurred in late summer at the upper middle of the profile.