Habitat use and feeding habits of juvenile fishes in an infrequently flooded Atlantic saltmarsh
In saltmarshes, marsh creeks provide an important corridor between the marsh and the subtidal habitat for fishes. We compare fish and prey in a Spartina densiflora marsh creek with a tidal flat in the SW Atlantic (Argentina) to evaluate the hypotheses that: (1) benthic prey abundance is higher in th...
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2010
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13231650_v61_n10_p1154_Valinas http://hdl.handle.net/20.500.12110/paper_13231650_v61_n10_p1154_Valinas |
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paper:paper_13231650_v61_n10_p1154_Valinas2023-06-08T16:10:23Z Habitat use and feeding habits of juvenile fishes in an infrequently flooded Atlantic saltmarsh fish habitat use marsh creek prey selection Spartina densiflora saltmarsh tidal flat. abundance benthos clupeoid feeding behavior fish flooding grass habitat use juvenile perciform prey availability prey selection saltmarsh subtidal environment tidal flat Argentina Atlantic Ocean Atlantic Ocean (Southwest) Brevoortia aurea Micropogonias furnieri Odontesthes argentinensis Pisces Ramnogaster arcuata Spartina densiflora In saltmarshes, marsh creeks provide an important corridor between the marsh and the subtidal habitat for fishes. We compare fish and prey in a Spartina densiflora marsh creek with a tidal flat in the SW Atlantic (Argentina) to evaluate the hypotheses that: (1) benthic prey abundance is higher in the marsh creek, and therefore the abundance of benthivorous fishes and predation pressure on benthos is higher in this area; and (2) marsh creeks act as refuge areas for fishes. Fish abundance and benthic prey availability were sampled over four seasons, and dietary composition of Odontesthes argentinensis and Micropogonias furnieri was assessed. Brevoortia aurea was more abundant in the marsh creek, Micropogonias furnieri showed the opposite pattern, and Odontesthes argentinensis and Ramnogaster arcuata did not dominate either habitat. As expected, smaller fishes were more abundant in the marsh creek. Food abundance was higher in the marsh creek but only M. furnieri consumed more prey in this area, while O. argentinensis consumed more in the tidal flat. Differences in prey accessibility and sediment features between areas could explain these results. This work highlights the importance of marsh creeks as refuge and/or feeding grounds for fishes in infrequently flooded saltmarshes. © 2010 CSIRO. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13231650_v61_n10_p1154_Valinas http://hdl.handle.net/20.500.12110/paper_13231650_v61_n10_p1154_Valinas |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
fish habitat use marsh creek prey selection Spartina densiflora saltmarsh tidal flat. abundance benthos clupeoid feeding behavior fish flooding grass habitat use juvenile perciform prey availability prey selection saltmarsh subtidal environment tidal flat Argentina Atlantic Ocean Atlantic Ocean (Southwest) Brevoortia aurea Micropogonias furnieri Odontesthes argentinensis Pisces Ramnogaster arcuata Spartina densiflora |
| spellingShingle |
fish habitat use marsh creek prey selection Spartina densiflora saltmarsh tidal flat. abundance benthos clupeoid feeding behavior fish flooding grass habitat use juvenile perciform prey availability prey selection saltmarsh subtidal environment tidal flat Argentina Atlantic Ocean Atlantic Ocean (Southwest) Brevoortia aurea Micropogonias furnieri Odontesthes argentinensis Pisces Ramnogaster arcuata Spartina densiflora Habitat use and feeding habits of juvenile fishes in an infrequently flooded Atlantic saltmarsh |
| topic_facet |
fish habitat use marsh creek prey selection Spartina densiflora saltmarsh tidal flat. abundance benthos clupeoid feeding behavior fish flooding grass habitat use juvenile perciform prey availability prey selection saltmarsh subtidal environment tidal flat Argentina Atlantic Ocean Atlantic Ocean (Southwest) Brevoortia aurea Micropogonias furnieri Odontesthes argentinensis Pisces Ramnogaster arcuata Spartina densiflora |
| description |
In saltmarshes, marsh creeks provide an important corridor between the marsh and the subtidal habitat for fishes. We compare fish and prey in a Spartina densiflora marsh creek with a tidal flat in the SW Atlantic (Argentina) to evaluate the hypotheses that: (1) benthic prey abundance is higher in the marsh creek, and therefore the abundance of benthivorous fishes and predation pressure on benthos is higher in this area; and (2) marsh creeks act as refuge areas for fishes. Fish abundance and benthic prey availability were sampled over four seasons, and dietary composition of Odontesthes argentinensis and Micropogonias furnieri was assessed. Brevoortia aurea was more abundant in the marsh creek, Micropogonias furnieri showed the opposite pattern, and Odontesthes argentinensis and Ramnogaster arcuata did not dominate either habitat. As expected, smaller fishes were more abundant in the marsh creek. Food abundance was higher in the marsh creek but only M. furnieri consumed more prey in this area, while O. argentinensis consumed more in the tidal flat. Differences in prey accessibility and sediment features between areas could explain these results. This work highlights the importance of marsh creeks as refuge and/or feeding grounds for fishes in infrequently flooded saltmarshes. © 2010 CSIRO. |
| title |
Habitat use and feeding habits of juvenile fishes in an infrequently flooded Atlantic saltmarsh |
| title_short |
Habitat use and feeding habits of juvenile fishes in an infrequently flooded Atlantic saltmarsh |
| title_full |
Habitat use and feeding habits of juvenile fishes in an infrequently flooded Atlantic saltmarsh |
| title_fullStr |
Habitat use and feeding habits of juvenile fishes in an infrequently flooded Atlantic saltmarsh |
| title_full_unstemmed |
Habitat use and feeding habits of juvenile fishes in an infrequently flooded Atlantic saltmarsh |
| title_sort |
habitat use and feeding habits of juvenile fishes in an infrequently flooded atlantic saltmarsh |
| publishDate |
2010 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13231650_v61_n10_p1154_Valinas http://hdl.handle.net/20.500.12110/paper_13231650_v61_n10_p1154_Valinas |
| _version_ |
1768542233748832256 |