INVESTIGADORES
MODENUTTI Beatriz Estela
artículos
Título:
The role of the predaceos copepod Parabroteas sarsi in the pelagic food web of a large, deep Andean lake.
Autor/es:
MARIANA REISSIG,; BEATRIZ ESTELA MODENUTTI O BEATRIZ MODENUTTI O B. MODENUTTI; E BALSEIRO,; CLAUDIA QUEIMALIÑOS,
Revista:
HYDROBIOLOGIA
Editorial:
Springer
Referencias:
Lugar: Holanda; Año: 2004 vol. 524 p. 67 - 77
ISSN:
0018-8158
Resumen:
Parabroteas sarsi is a predaceous calanoid copepod that inhabits both shallow temporary fishless ponds and
deep fish lakes of Patagonia and Antarctica. The aim of this study was to analyse the effect of P. sarsi on the
plankton structure of a deep Andean lake (>100 m depth) and the zooplankton vertical distribution in
order to asses a possible vertical refuge of the predatory copepod against visual fish predation. We tested
the extent to which the trophic cascade effect of this predator propagates through the food web. We carried
out a vertical sampling in Lake Rivadavia (Patagonia, Argentina) in order to assess zooplankton distribution.
plankton structure of a deep Andean lake (>100 m depth) and the zooplankton vertical distribution in
order to asses a possible vertical refuge of the predatory copepod against visual fish predation. We tested
the extent to which the trophic cascade effect of this predator propagates through the food web. We carried
out a vertical sampling in Lake Rivadavia (Patagonia, Argentina) in order to assess zooplankton distribution.
deep fish lakes of Patagonia and Antarctica. The aim of this study was to analyse the effect of P. sarsi on the
plankton structure of a deep Andean lake (>100 m depth) and the zooplankton vertical distribution in
order to asses a possible vertical refuge of the predatory copepod against visual fish predation. We tested
the extent to which the trophic cascade effect of this predator propagates through the food web. We carried
out a vertical sampling in Lake Rivadavia (Patagonia, Argentina) in order to assess zooplankton distribution.
plankton structure of a deep Andean lake (>100 m depth) and the zooplankton vertical distribution in
order to asses a possible vertical refuge of the predatory copepod against visual fish predation. We tested
the extent to which the trophic cascade effect of this predator propagates through the food web. We carried
out a vertical sampling in Lake Rivadavia (Patagonia, Argentina) in order to assess zooplankton distribution.
is a predaceous calanoid copepod that inhabits both shallow temporary fishless ponds and
deep fish lakes of Patagonia and Antarctica. The aim of this study was to analyse the effect of P. sarsi on the
plankton structure of a deep Andean lake (>100 m depth) and the zooplankton vertical distribution in
order to asses a possible vertical refuge of the predatory copepod against visual fish predation. We tested
the extent to which the trophic cascade effect of this predator propagates through the food web. We carried
out a vertical sampling in Lake Rivadavia (Patagonia, Argentina) in order to assess zooplankton distribution.
plankton structure of a deep Andean lake (>100 m depth) and the zooplankton vertical distribution in
order to asses a possible vertical refuge of the predatory copepod against visual fish predation. We tested
the extent to which the trophic cascade effect of this predator propagates through the food web. We carried
out a vertical sampling in Lake Rivadavia (Patagonia, Argentina) in order to assess zooplankton distribution.
P. sarsi on the
plankton structure of a deep Andean lake (>100 m depth) and the zooplankton vertical distribution in
order to asses a possible vertical refuge of the predatory copepod against visual fish predation. We tested
the extent to which the trophic cascade effect of this predator propagates through the food web. We carried
out a vertical sampling in Lake Rivadavia (Patagonia, Argentina) in order to assess zooplankton distribution.
P. sarsi showed a vertical distribution towards deeper layers of the water column both at midday
and at night, indicating that the copepod had an effective refuge against visual predation. Additionally, we
carried out both field and laboratory experiments with the presence of P. sarsi. The predator was observed
to affect significantly the survival of the copepod Boeckella michaelseni both in laboratory and field
experiments. On the contrary, rotifers and adults of Daphnia cf. commutata were not substantially affected
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
experiments. On the contrary, rotifers and adults of Daphnia cf. commutata were not substantially affected
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
to affect significantly the survival of the copepod Boeckella michaelseni both in laboratory and field
experiments. On the contrary, rotifers and adults of Daphnia cf. commutata were not substantially affected
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
experiments. On the contrary, rotifers and adults of Daphnia cf. commutata were not substantially affected
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
and at night, indicating that the copepod had an effective refuge against visual predation. Additionally, we
carried out both field and laboratory experiments with the presence of P. sarsi. The predator was observed
to affect significantly the survival of the copepod Boeckella michaelseni both in laboratory and field
experiments. On the contrary, rotifers and adults of Daphnia cf. commutata were not substantially affected
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
experiments. On the contrary, rotifers and adults of Daphnia cf. commutata were not substantially affected
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
to affect significantly the survival of the copepod Boeckella michaelseni both in laboratory and field
experiments. On the contrary, rotifers and adults of Daphnia cf. commutata were not substantially affected
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
experiments. On the contrary, rotifers and adults of Daphnia cf. commutata were not substantially affected
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
showed a vertical distribution towards deeper layers of the water column both at midday
and at night, indicating that the copepod had an effective refuge against visual predation. Additionally, we
carried out both field and laboratory experiments with the presence of P. sarsi. The predator was observed
to affect significantly the survival of the copepod Boeckella michaelseni both in laboratory and field
experiments. On the contrary, rotifers and adults of Daphnia cf. commutata were not substantially affected
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
experiments. On the contrary, rotifers and adults of Daphnia cf. commutata were not substantially affected
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
to affect significantly the survival of the copepod Boeckella michaelseni both in laboratory and field
experiments. On the contrary, rotifers and adults of Daphnia cf. commutata were not substantially affected
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
experiments. On the contrary, rotifers and adults of Daphnia cf. commutata were not substantially affected
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
P. sarsi. The predator was observed
to affect significantly the survival of the copepod Boeckella michaelseni both in laboratory and field
experiments. On the contrary, rotifers and adults of Daphnia cf. commutata were not substantially affected
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
experiments. On the contrary, rotifers and adults of Daphnia cf. commutata were not substantially affected
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
Boeckella michaelseni both in laboratory and field
experiments. On the contrary, rotifers and adults of Daphnia cf. commutata were not substantially affected
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
Daphnia cf. commutata were not substantially affected
by the predator. B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.
B. michaelseni mouthparts revealed an omnivorous diet; therefore a broad phytoplanktonic
size spectrum could be affected by this copepod. However, no cascade effect was observed due to the
presence of P. sarsi despite the decrease of B. michaelseni abundance.P. sarsi despite the decrease of B. michaelseni abundance.