INVESTIGADORES
MODENUTTI Beatriz Estela
artículos
Título:
Grazing impact on autotrophic picoplankton in two south andean lakes (Patagonia, Argentina) with different light:nutrient ratios.
Autor/es:
E BALSEIRO,; CP QUEIMALINOS,; BEATRIZ ESTELA MODENUTTI O BEATRIZ MODENUTTI O B. MODENUTTI
Revista:
REVISTA CHILENA DE HISTORIA NATURAL
Editorial:
Sociedad Chilena de Biología
Referencias:
Lugar: Chile; Año: 2004 vol. 77 p. 73 - 85
ISSN:
0716-078X
Resumen:
Andean ultraoligotrophic lakes are environments with high light:nutrient ratios. In these lakes a particular
planktonic food web has been noticed, constituted by large mixotrophic ciliates which share and compete for
food resources with nanoflagellates and cladocerans. Clearance rates on autotrophic picoplankton of
nanoflagellates, the ciliate Ophrydium naumanni and cladocerans were compared through grazing experiments
in lakes Moreno Oeste and Rivadavia. The lakes exhibited significant differences in the light:nutrient ratio
and had different crustacean and zooplankton compositions. In lake Moreno Oeste the metalimnion was
included in the euphotic zone resulting in an illuminated layer where deep chlorophyll maxima developed. On
the contrary, in lake Rivadavia the illuminated layers were restricted to the epilimnion and no deep
chlorophyll maxima were observed. In lake Moreno Oeste, the contribution to total bacterivory of the ciliate
in lakes Moreno Oeste and Rivadavia. The lakes exhibited significant differences in the light:nutrient ratio
and had different crustacean and zooplankton compositions. In lake Moreno Oeste the metalimnion was
included in the euphotic zone resulting in an illuminated layer where deep chlorophyll maxima developed. On
the contrary, in lake Rivadavia the illuminated layers were restricted to the epilimnion and no deep
chlorophyll maxima were observed. In lake Moreno Oeste, the contribution to total bacterivory of the ciliate
in lakes Moreno Oeste and Rivadavia. The lakes exhibited significant differences in the light:nutrient ratio
and had different crustacean and zooplankton compositions. In lake Moreno Oeste the metalimnion was
included in the euphotic zone resulting in an illuminated layer where deep chlorophyll maxima developed. On
the contrary, in lake Rivadavia the illuminated layers were restricted to the epilimnion and no deep
chlorophyll maxima were observed. In lake Moreno Oeste, the contribution to total bacterivory of the ciliate
Ophrydium naumanni and cladocerans were compared through grazing experiments
in lakes Moreno Oeste and Rivadavia. The lakes exhibited significant differences in the light:nutrient ratio
and had different crustacean and zooplankton compositions. In lake Moreno Oeste the metalimnion was
included in the euphotic zone resulting in an illuminated layer where deep chlorophyll maxima developed. On
the contrary, in lake Rivadavia the illuminated layers were restricted to the epilimnion and no deep
chlorophyll maxima were observed. In lake Moreno Oeste, the contribution to total bacterivory of the ciliate
O. naumanni and the cladoceran Ceriodaphnia dubia was observed to increase at 30 m depth, due mainly to
the vertical distribution of both species. On the contrary, the grazing rates of the nanoflagellate assemblage,
dominated by the mixotrophic Chrysochromulina parva, did not change along the water column and were
considerably high (one order of magnitude higher than those obtained for O. naumanni and C. dubia). In lake
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
considerably high (one order of magnitude higher than those obtained for O. naumanni and C. dubia). In lake
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
considerably high (one order of magnitude higher than those obtained for O. naumanni and C. dubia). In lake
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
the vertical distribution of both species. On the contrary, the grazing rates of the nanoflagellate assemblage,
dominated by the mixotrophic Chrysochromulina parva, did not change along the water column and were
considerably high (one order of magnitude higher than those obtained for O. naumanni and C. dubia). In lake
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
considerably high (one order of magnitude higher than those obtained for O. naumanni and C. dubia). In lake
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
considerably high (one order of magnitude higher than those obtained for O. naumanni and C. dubia). In lake
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
the vertical distribution of both species. On the contrary, the grazing rates of the nanoflagellate assemblage,
dominated by the mixotrophic Chrysochromulina parva, did not change along the water column and were
considerably high (one order of magnitude higher than those obtained for O. naumanni and C. dubia). In lake
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
considerably high (one order of magnitude higher than those obtained for O. naumanni and C. dubia). In lake
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
considerably high (one order of magnitude higher than those obtained for O. naumanni and C. dubia). In lake
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
and the cladoceran Ceriodaphnia dubia was observed to increase at 30 m depth, due mainly to
the vertical distribution of both species. On the contrary, the grazing rates of the nanoflagellate assemblage,
dominated by the mixotrophic Chrysochromulina parva, did not change along the water column and were
considerably high (one order of magnitude higher than those obtained for O. naumanni and C. dubia). In lake
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
considerably high (one order of magnitude higher than those obtained for O. naumanni and C. dubia). In lake
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
considerably high (one order of magnitude higher than those obtained for O. naumanni and C. dubia). In lake
Rivadavia, nanoflagellate grazing rates were lower and the relative impact of the nanoflagellate assemblage
was comparable to those of O. naumanni and Daphnia cf .commutata. The observed difference in clearance
rates of the nanoflagellate assemblage probably would reflect an increase in the phagotrophy where light
energy is higher relative to phosphorus. In lake Moreno Oeste where light is not limiting, the observed
increase of the phagotrophy by protists may be due to a higher requirement of limiting elements.
rates of the