Spatio-Temporal Variability in Movement Patterns and Habitat Associations of Juvenile Fishes in Estuarine Seascapes
Understanding the ecological value of nursery habitats is important to the conservation of coastal fisheries. The purpose of this research was to address gaps in our knowledge of nursery habitat value for both juvenile red drum (Sciaenops ocellatus) and southern flounder (Paralichthys lethostigma) w...
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fttexasamuniv:oai:oaktrust.library.tamu.edu:1969.1/156801 2023-07-16T04:00:41+02:00 Spatio-Temporal Variability in Movement Patterns and Habitat Associations of Juvenile Fishes in Estuarine Seascapes Dance, Michael Allen Rooker, Jay R Armitage, Anna R Gold, John R Stunz, Greg W 2016-07-08T15:05:10Z application/pdf https://hdl.handle.net/1969.1/156801 en eng https://hdl.handle.net/1969.1/156801 Habitat Use Acoustic Telemetry Detection Range Red Drum Southern Flounder Thesis text 2016 fttexasamuniv 2023-06-27T22:51:20Z Understanding the ecological value of nursery habitats is important to the conservation of coastal fisheries. The purpose of this research was to address gaps in our knowledge of nursery habitat value for both juvenile red drum (Sciaenops ocellatus) and southern flounder (Paralichthys lethostigma) within estuarine seascapes in Texas. Acoustic telemetry and habitat suitability models were used to identify spatial and temporal variability in habitat associations and movement patterns of both species. Objectives were to determine the influence of biotic factors on transmitter performance in acoustic telemetry studies, examine habitat use and movement patterns of both species at two spatial scales (habitat and bay scale) within a model estuary, and to use generalized additive models (GAMs) to evaluate ontogenetic and regional variation in habitat suitability for red drum along the Texas coast. Significant differences in detection probability (2-7 fold differences) were observed between internally and externally placed transmitters on red drum as well as between transmitters attached externally to red drum and those attached to a fixed line, while no species effect was observed for internal transmitters in red drum and southern flounder. At the habitat scale (1 m – 1 km), both species were associated with seagrass and edge habitat; however, rates of movement differed greatly between species, which likely reflected the use of different foraging strategies (i.e. ambush vs. active). Bay-scale (1-20 km) distribution was influenced by physicochemical conditions and seascape composition, with both species found most frequently in areas with high seagrass coverage and in close proximity to tidal creeks and connective channels. At broader, regional scales, stage-specific habitat suitability models demonstrated that fish-habitat relationships for juvenile red drum were often similar among estuaries along a latitudinal gradient; however, the relative importance of abiotic and biotic factors to red drum distribution and ... Thesis Red drum Sciaenops ocellatus Texas A&M University Digital Repository |
institution |
Open Polar |
collection |
Texas A&M University Digital Repository |
op_collection_id |
fttexasamuniv |
language |
English |
topic |
Habitat Use Acoustic Telemetry Detection Range Red Drum Southern Flounder |
spellingShingle |
Habitat Use Acoustic Telemetry Detection Range Red Drum Southern Flounder Dance, Michael Allen Spatio-Temporal Variability in Movement Patterns and Habitat Associations of Juvenile Fishes in Estuarine Seascapes |
topic_facet |
Habitat Use Acoustic Telemetry Detection Range Red Drum Southern Flounder |
description |
Understanding the ecological value of nursery habitats is important to the conservation of coastal fisheries. The purpose of this research was to address gaps in our knowledge of nursery habitat value for both juvenile red drum (Sciaenops ocellatus) and southern flounder (Paralichthys lethostigma) within estuarine seascapes in Texas. Acoustic telemetry and habitat suitability models were used to identify spatial and temporal variability in habitat associations and movement patterns of both species. Objectives were to determine the influence of biotic factors on transmitter performance in acoustic telemetry studies, examine habitat use and movement patterns of both species at two spatial scales (habitat and bay scale) within a model estuary, and to use generalized additive models (GAMs) to evaluate ontogenetic and regional variation in habitat suitability for red drum along the Texas coast. Significant differences in detection probability (2-7 fold differences) were observed between internally and externally placed transmitters on red drum as well as between transmitters attached externally to red drum and those attached to a fixed line, while no species effect was observed for internal transmitters in red drum and southern flounder. At the habitat scale (1 m – 1 km), both species were associated with seagrass and edge habitat; however, rates of movement differed greatly between species, which likely reflected the use of different foraging strategies (i.e. ambush vs. active). Bay-scale (1-20 km) distribution was influenced by physicochemical conditions and seascape composition, with both species found most frequently in areas with high seagrass coverage and in close proximity to tidal creeks and connective channels. At broader, regional scales, stage-specific habitat suitability models demonstrated that fish-habitat relationships for juvenile red drum were often similar among estuaries along a latitudinal gradient; however, the relative importance of abiotic and biotic factors to red drum distribution and ... |
author2 |
Rooker, Jay R Armitage, Anna R Gold, John R Stunz, Greg W |
format |
Thesis |
author |
Dance, Michael Allen |
author_facet |
Dance, Michael Allen |
author_sort |
Dance, Michael Allen |
title |
Spatio-Temporal Variability in Movement Patterns and Habitat Associations of Juvenile Fishes in Estuarine Seascapes |
title_short |
Spatio-Temporal Variability in Movement Patterns and Habitat Associations of Juvenile Fishes in Estuarine Seascapes |
title_full |
Spatio-Temporal Variability in Movement Patterns and Habitat Associations of Juvenile Fishes in Estuarine Seascapes |
title_fullStr |
Spatio-Temporal Variability in Movement Patterns and Habitat Associations of Juvenile Fishes in Estuarine Seascapes |
title_full_unstemmed |
Spatio-Temporal Variability in Movement Patterns and Habitat Associations of Juvenile Fishes in Estuarine Seascapes |
title_sort |
spatio-temporal variability in movement patterns and habitat associations of juvenile fishes in estuarine seascapes |
publishDate |
2016 |
url |
https://hdl.handle.net/1969.1/156801 |
genre |
Red drum Sciaenops ocellatus |
genre_facet |
Red drum Sciaenops ocellatus |
op_relation |
https://hdl.handle.net/1969.1/156801 |
_version_ |
1771549702738673664 |