Data from: Influence of environmental parameters on movements and habitat utilization of humpback whales (Megaptera novaeangliae) in the Madagascar breeding ground
Assessing the movement patterns and key habitat features of breeding humpback whales is a prerequisite for the conservation management of this philopatric species. To investigate the interactions between humpback whale movements and environmental conditions off Madagascar, we deployed 25 satellite t...
Main Authors: | , , , , , , , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
2016
|
Subjects: | |
Online Access: | http://hdl.handle.net/10255/dryad.125010 https://doi.org/10.5061/dryad.73h36 |
id |
ftdryad:oai:v1.datadryad.org:10255/dryad.125010 |
---|---|
record_format |
openpolar |
spelling |
ftdryad:oai:v1.datadryad.org:10255/dryad.125010 2023-05-15T16:35:58+02:00 Data from: Influence of environmental parameters on movements and habitat utilization of humpback whales (Megaptera novaeangliae) in the Madagascar breeding ground Trudelle, Laurène Cerchio, Salvatore Zerbini, Alexandre N. Geyer, Ygor Mayer, Francois-Xavier Jung, Jean-Luc Hervé, Maxime R. Pous, Stéphane Sallée, Jean-Baptiste Rosenbaum, Howard C. Adam, Olivier Charrassin, Jean-Benoit Southern Indian Ocean Madagascar 2016-11-21T20:43:11Z http://hdl.handle.net/10255/dryad.125010 https://doi.org/10.5061/dryad.73h36 unknown doi:10.5061/dryad.73h36/1 doi:10.1098/rsos.160616 doi:10.5061/dryad.73h36 Trudelle L, Cerchio S, Zerbini AN, Geyer Y, Mayer F, Jung J, Hervé MR, Pous S, Sallée J, Rosenbaum HC, Adam O, Charrassin J (2016) Influence of environmental parameters on movements and habitat utilization of humpback whales (Megaptera novaeangliae) in the Madagascar breeding ground. Royal Society Open Science 3(12): 160616. 2054-5703 http://hdl.handle.net/10255/dryad.125010 humpback whales satellite telemetry breeding movement patterns habitat use Article 2016 ftdryad https://doi.org/10.5061/dryad.73h36 https://doi.org/10.5061/dryad.73h36/1 https://doi.org/10.1098/rsos.160616 2020-01-01T15:39:46Z Assessing the movement patterns and key habitat features of breeding humpback whales is a prerequisite for the conservation management of this philopatric species. To investigate the interactions between humpback whale movements and environmental conditions off Madagascar, we deployed 25 satellite tags in the northeast and southwest coast of Madagascar. For each recorded position, we collated estimates of environmental variables and computed two behavioural metrics: behavioural state of ‘transiting’ (consistent/directional) versus ‘localized’ (variable/non-directional), and active swimming speed (i.e. speed relative to the current). On coastal habitats (i.e. bathymetry < 200 m and in adjacent areas), females showed localized behaviour in deep waters (191 ± 20 m) and at large distances (14 ± 0.6 km) from shore, suggesting that their breeding habitat extends beyond the shallowest waters available close to the coastline. Males' active swimming speed decreased in shallow waters, but environmental parameters did not influence their likelihood to exhibit localized movements, which was probably dominated by social factors instead. In oceanic habitats, both males and females showed localized behaviours in shallow waters and favoured high chlorophyll-a concentrations. Active swimming speed accounts for a large proportion of observed movement speed; however, breeding humpback whales probably exploit prevailing ocean currents to maximize displacement. This study provides evidence that coastal areas, generally subject to strong human pressure, remain the core habitat of humpback whales off Madagascar. Our results expand the knowledge of humpback whale habitat use in oceanic habitat and response to variability of environmental factors such as oceanic current and chlorophyll level. Article in Journal/Newspaper Humpback Whale Megaptera novaeangliae Dryad Digital Repository (Duke University) Indian |
institution |
Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
humpback whales satellite telemetry breeding movement patterns habitat use |
spellingShingle |
humpback whales satellite telemetry breeding movement patterns habitat use Trudelle, Laurène Cerchio, Salvatore Zerbini, Alexandre N. Geyer, Ygor Mayer, Francois-Xavier Jung, Jean-Luc Hervé, Maxime R. Pous, Stéphane Sallée, Jean-Baptiste Rosenbaum, Howard C. Adam, Olivier Charrassin, Jean-Benoit Data from: Influence of environmental parameters on movements and habitat utilization of humpback whales (Megaptera novaeangliae) in the Madagascar breeding ground |
topic_facet |
humpback whales satellite telemetry breeding movement patterns habitat use |
description |
Assessing the movement patterns and key habitat features of breeding humpback whales is a prerequisite for the conservation management of this philopatric species. To investigate the interactions between humpback whale movements and environmental conditions off Madagascar, we deployed 25 satellite tags in the northeast and southwest coast of Madagascar. For each recorded position, we collated estimates of environmental variables and computed two behavioural metrics: behavioural state of ‘transiting’ (consistent/directional) versus ‘localized’ (variable/non-directional), and active swimming speed (i.e. speed relative to the current). On coastal habitats (i.e. bathymetry < 200 m and in adjacent areas), females showed localized behaviour in deep waters (191 ± 20 m) and at large distances (14 ± 0.6 km) from shore, suggesting that their breeding habitat extends beyond the shallowest waters available close to the coastline. Males' active swimming speed decreased in shallow waters, but environmental parameters did not influence their likelihood to exhibit localized movements, which was probably dominated by social factors instead. In oceanic habitats, both males and females showed localized behaviours in shallow waters and favoured high chlorophyll-a concentrations. Active swimming speed accounts for a large proportion of observed movement speed; however, breeding humpback whales probably exploit prevailing ocean currents to maximize displacement. This study provides evidence that coastal areas, generally subject to strong human pressure, remain the core habitat of humpback whales off Madagascar. Our results expand the knowledge of humpback whale habitat use in oceanic habitat and response to variability of environmental factors such as oceanic current and chlorophyll level. |
format |
Article in Journal/Newspaper |
author |
Trudelle, Laurène Cerchio, Salvatore Zerbini, Alexandre N. Geyer, Ygor Mayer, Francois-Xavier Jung, Jean-Luc Hervé, Maxime R. Pous, Stéphane Sallée, Jean-Baptiste Rosenbaum, Howard C. Adam, Olivier Charrassin, Jean-Benoit |
author_facet |
Trudelle, Laurène Cerchio, Salvatore Zerbini, Alexandre N. Geyer, Ygor Mayer, Francois-Xavier Jung, Jean-Luc Hervé, Maxime R. Pous, Stéphane Sallée, Jean-Baptiste Rosenbaum, Howard C. Adam, Olivier Charrassin, Jean-Benoit |
author_sort |
Trudelle, Laurène |
title |
Data from: Influence of environmental parameters on movements and habitat utilization of humpback whales (Megaptera novaeangliae) in the Madagascar breeding ground |
title_short |
Data from: Influence of environmental parameters on movements and habitat utilization of humpback whales (Megaptera novaeangliae) in the Madagascar breeding ground |
title_full |
Data from: Influence of environmental parameters on movements and habitat utilization of humpback whales (Megaptera novaeangliae) in the Madagascar breeding ground |
title_fullStr |
Data from: Influence of environmental parameters on movements and habitat utilization of humpback whales (Megaptera novaeangliae) in the Madagascar breeding ground |
title_full_unstemmed |
Data from: Influence of environmental parameters on movements and habitat utilization of humpback whales (Megaptera novaeangliae) in the Madagascar breeding ground |
title_sort |
data from: influence of environmental parameters on movements and habitat utilization of humpback whales (megaptera novaeangliae) in the madagascar breeding ground |
publishDate |
2016 |
url |
http://hdl.handle.net/10255/dryad.125010 https://doi.org/10.5061/dryad.73h36 |
op_coverage |
Southern Indian Ocean Madagascar |
geographic |
Indian |
geographic_facet |
Indian |
genre |
Humpback Whale Megaptera novaeangliae |
genre_facet |
Humpback Whale Megaptera novaeangliae |
op_relation |
doi:10.5061/dryad.73h36/1 doi:10.1098/rsos.160616 doi:10.5061/dryad.73h36 Trudelle L, Cerchio S, Zerbini AN, Geyer Y, Mayer F, Jung J, Hervé MR, Pous S, Sallée J, Rosenbaum HC, Adam O, Charrassin J (2016) Influence of environmental parameters on movements and habitat utilization of humpback whales (Megaptera novaeangliae) in the Madagascar breeding ground. Royal Society Open Science 3(12): 160616. 2054-5703 http://hdl.handle.net/10255/dryad.125010 |
op_doi |
https://doi.org/10.5061/dryad.73h36 https://doi.org/10.5061/dryad.73h36/1 https://doi.org/10.1098/rsos.160616 |
_version_ |
1766026276972265472 |