INVESTIGADORES
ROMERO Maria Carolina
artículos
Título:
DISTRIBUTION OF BENTHIC INVERTEBRATES IN THE BEAGLE CHANNEL, ARGENTINA
Autor/es:
DIEZ, MARIANO J.; ROMERO, M. CAROLINA; OBENAT, SANDRA; ALBANO, MARIANO J.; TAPELLA, FEDERICO
Revista:
Anales Instituto Patagonia (Chile)
Editorial:
Universidad de Magallanes
Referencias:
Año: 2009 vol. 37 p. 29 - 40
ISSN:
0718-686X
Resumen:
Bathymetric and spatio-temporal distributions of both abundance and biomass as well as secondary
production of benthic invertebrates in the Beagle Channel were determined. The sampling stations were
seasonally placed in three different areas in the Beagle Channel at two depth ranges, 15-40 m and 70-
259 m. A total of 32,686 specimens distributed in 30 taxonomic groups were identified. In addition, 4
taxa were quantified only in terms of biomass. The invertebrate abundance and biomass were different
with depth. Secondary production at this range was 0.59 ±0.51 kJ·m-2year-1 whereas it decreased to
0.09 ±0.08 kJ·m-2year-1 at 70-259 m. In contrast to secondary production, P/B ratio showed a positive
increment with depth. Furthermore, seasonal variations were not observed in secondary production of
the macrozoobenthos. Parameters directly associated with depth could be involved in structuring the
macrobenthic assemblages in the Beagle Channel.
increment with depth. Furthermore, seasonal variations were not observed in secondary production of
the macrozoobenthos. Parameters directly associated with depth could be involved in structuring the
macrobenthic assemblages in the Beagle Channel.
0.09 ±0.08 kJ·m-2year-1 at 70-259 m. In contrast to secondary production, P/B ratio showed a positive
increment with depth. Furthermore, seasonal variations were not observed in secondary production of
the macrozoobenthos. Parameters directly associated with depth could be involved in structuring the
macrobenthic assemblages in the Beagle Channel.
increment with depth. Furthermore, seasonal variations were not observed in secondary production of
the macrozoobenthos. Parameters directly associated with depth could be involved in structuring the
macrobenthic assemblages in the Beagle Channel.