Effect of different underwater light intensities and qualities on Stentor araucanus net primary production in an Andean lake

BEATRIZ ESTELA MODENUTTI O BEATRIZ MODENUTTI O B. MODENUTTI; E BALSEIRO,; ROBERTO BERTONI,; CRISTIANA CALLIERI,; CLAUDIA QUEIMALIÑOS,

Lathi

Congreso; SIL Congress; 2004

The photosynthetic e-ciency of the UV-B resistant planktonic ciliate Stentor araucanus was investigated using laboratory and eld experiments in Lake Moreno Oeste (41 5´ S and 71 33´ W, North Patagonia, Argentina).S. araucanus was observed to prefer the epilimnetic levels of the water column (10 m) reaching at this level the maximum NPP. Despite the high survival of the ciliate exposed to short wavelengths, NPP decreased at higher irradiances (both UV-B and PAR). Thus, epilimnetic colonization of Andean lakes by at this level the maximum NPP. Despite the high survival of the ciliate exposed to short wavelengths, NPP decreased at higher irradiances (both UV-B and PAR). Thus, epilimnetic colonization of Andean lakes by Argentina).S. araucanus was observed to prefer the epilimnetic levels of the water column (10 m) reaching at this level the maximum NPP. Despite the high survival of the ciliate exposed to short wavelengths, NPP decreased at higher irradiances (both UV-B and PAR). Thus, epilimnetic colonization of Andean lakes by at this level the maximum NPP. Despite the high survival of the ciliate exposed to short wavelengths, NPP decreased at higher irradiances (both UV-B and PAR). Thus, epilimnetic colonization of Andean lakes by using laboratory and eld experiments in Lake Moreno Oeste (41 5´ S and 71 33´ W, North Patagonia, Argentina).S. araucanus was observed to prefer the epilimnetic levels of the water column (10 m) reaching at this level the maximum NPP. Despite the high survival of the ciliate exposed to short wavelengths, NPP decreased at higher irradiances (both UV-B and PAR). Thus, epilimnetic colonization of Andean lakes by at this level the maximum NPP. Despite the high survival of the ciliate exposed to short wavelengths, NPP decreased at higher irradiances (both UV-B and PAR). Thus, epilimnetic colonization of Andean lakes by Argentina).S. araucanus was observed to prefer the epilimnetic levels of the water column (10 m) reaching at this level the maximum NPP. Despite the high survival of the ciliate exposed to short wavelengths, NPP decreased at higher irradiances (both UV-B and PAR). Thus, epilimnetic colonization of Andean lakes by at this level the maximum NPP. Despite the high survival of the ciliate exposed to short wavelengths, NPP decreased at higher irradiances (both UV-B and PAR). Thus, epilimnetic colonization of Andean lakes by Stentor araucanus was investigated using laboratory and eld experiments in Lake Moreno Oeste (41 5´ S and 71 33´ W, North Patagonia, Argentina).S. araucanus was observed to prefer the epilimnetic levels of the water column (10 m) reaching at this level the maximum NPP. Despite the high survival of the ciliate exposed to short wavelengths, NPP decreased at higher irradiances (both UV-B and PAR). Thus, epilimnetic colonization of Andean lakes by at this level the maximum NPP. Despite the high survival of the ciliate exposed to short wavelengths, NPP decreased at higher irradiances (both UV-B and PAR). Thus, epilimnetic colonization of Andean lakes by Argentina).S. araucanus was observed to prefer the epilimnetic levels of the water column (10 m) reaching at this level the maximum NPP. Despite the high survival of the ciliate exposed to short wavelengths, NPP decreased at higher irradiances (both UV-B and PAR). Thus, epilimnetic colonization of Andean lakes by at this level the maximum NPP. Despite the high survival of the ciliate exposed to short wavelengths, NPP decreased at higher irradiances (both UV-B and PAR). Thus, epilimnetic colonization of Andean lakes by  5´ S and 71 33´ W, North Patagonia, Argentina).S. araucanus was observed to prefer the epilimnetic levels of the water column (10 m) reaching at this level the maximum NPP. Despite the high survival of the ciliate exposed to short wavelengths, NPP decreased at higher irradiances (both UV-B and PAR). Thus, epilimnetic colonization of Andean lakes by at this level the maximum NPP. Despite the high survival of the ciliate exposed to short wavelengths, NPP decreased at higher irradiances (both UV-B and PAR). Thus, epilimnetic colonization of Andean lakes by S. araucanus was observed to prefer the epilimnetic levels of the water column (10 m) reaching at this level the maximum NPP. Despite the high survival of the ciliate exposed to short wavelengths, NPP decreased at higher irradiances (both UV-B and PAR). Thus, epilimnetic colonization of Andean lakes by S. araucanus represents a tradeo between higher survival and lower cell-specic NPP.represents a tradeo between higher survival and lower cell-specic NPP.