Movement patterns of humpback whales (Megaptera novaeangliae) reoccupying a Brazilian breeding ground
Abstract: The population of humpback whales from breeding stock A is increasing, and little is known about the routes used by humpbacks that move north of the main calving area of Brazil, the Abrolhos Bank. The aim of this study was to describe the movements of humpback whales in a reoccupation wint...
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Online Access: | https://dx.doi.org/10.6084/m9.figshare.7185797 https://scielo.figshare.com/articles/Movement_patterns_of_humpback_whales_Megaptera_novaeangliae_reoccupying_a_Brazilian_breeding_ground/7185797 |
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ftdatacite:10.6084/m9.figshare.7185797 2023-05-15T17:10:51+02:00 Movement patterns of humpback whales (Megaptera novaeangliae) reoccupying a Brazilian breeding ground Gonçalves, Maria Isabel Carvalho Sousa-Lima, Renata Santoro De Niel Nascimento Teixeira Carvalho, Gustavo Henrique Danilewicz, Daniel Baumgarten, Júlio Ernesto 2018 https://dx.doi.org/10.6084/m9.figshare.7185797 https://scielo.figshare.com/articles/Movement_patterns_of_humpback_whales_Megaptera_novaeangliae_reoccupying_a_Brazilian_breeding_ground/7185797 unknown SciELO journals https://dx.doi.org/10.1590/1676-0611-bn-2018-0567 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY 50202 Conservation and Biodiversity FOS Biological sciences dataset Dataset 2018 ftdatacite https://doi.org/10.6084/m9.figshare.7185797 https://doi.org/10.1590/1676-0611-bn-2018-0567 2021-11-05T12:55:41Z Abstract: The population of humpback whales from breeding stock A is increasing, and little is known about the routes used by humpbacks that move north of the main calving area of Brazil, the Abrolhos Bank. The aim of this study was to describe the movements of humpback whales in a reoccupation wintering area (Serra Grande, Bahia state, Brazil) based on land-based surveys to test if movement patterns change during the season and between years, due to group composition, behavioral state, and distance to the coast. The mean leg speed of the groups sighted was 6.88 (±2.92) km/h, and leg speed was positively correlated with distance to the coast. There was an increase in leg speed and distance to the coast with increasing number of escorts in the groups with calves. The mean linearity value for group trajectory was 0.81 (±0.19) and the mean reorientation rate was 25.72 (±19.09) º/min. We observed a predominance of trajectories heading south throughout the study. Groups exhibiting more erratic movements early in the season, and groups moving south showed more linear trajectories than groups moving north, indicating the beginning of their migration back to the feeding grounds. Energy conserving strategies and social context affect the movements of humpback whales in Serra Grande, resulting in the observed patterns of the reoccupation of available and suitable habitat north of Abrolhos. Thereby, special attention should be given managing activities with the potential to disturb or displace whales using the region to calve and breed. Dataset Megaptera novaeangliae DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
50202 Conservation and Biodiversity FOS Biological sciences |
spellingShingle |
50202 Conservation and Biodiversity FOS Biological sciences Gonçalves, Maria Isabel Carvalho Sousa-Lima, Renata Santoro De Niel Nascimento Teixeira Carvalho, Gustavo Henrique Danilewicz, Daniel Baumgarten, Júlio Ernesto Movement patterns of humpback whales (Megaptera novaeangliae) reoccupying a Brazilian breeding ground |
topic_facet |
50202 Conservation and Biodiversity FOS Biological sciences |
description |
Abstract: The population of humpback whales from breeding stock A is increasing, and little is known about the routes used by humpbacks that move north of the main calving area of Brazil, the Abrolhos Bank. The aim of this study was to describe the movements of humpback whales in a reoccupation wintering area (Serra Grande, Bahia state, Brazil) based on land-based surveys to test if movement patterns change during the season and between years, due to group composition, behavioral state, and distance to the coast. The mean leg speed of the groups sighted was 6.88 (±2.92) km/h, and leg speed was positively correlated with distance to the coast. There was an increase in leg speed and distance to the coast with increasing number of escorts in the groups with calves. The mean linearity value for group trajectory was 0.81 (±0.19) and the mean reorientation rate was 25.72 (±19.09) º/min. We observed a predominance of trajectories heading south throughout the study. Groups exhibiting more erratic movements early in the season, and groups moving south showed more linear trajectories than groups moving north, indicating the beginning of their migration back to the feeding grounds. Energy conserving strategies and social context affect the movements of humpback whales in Serra Grande, resulting in the observed patterns of the reoccupation of available and suitable habitat north of Abrolhos. Thereby, special attention should be given managing activities with the potential to disturb or displace whales using the region to calve and breed. |
format |
Dataset |
author |
Gonçalves, Maria Isabel Carvalho Sousa-Lima, Renata Santoro De Niel Nascimento Teixeira Carvalho, Gustavo Henrique Danilewicz, Daniel Baumgarten, Júlio Ernesto |
author_facet |
Gonçalves, Maria Isabel Carvalho Sousa-Lima, Renata Santoro De Niel Nascimento Teixeira Carvalho, Gustavo Henrique Danilewicz, Daniel Baumgarten, Júlio Ernesto |
author_sort |
Gonçalves, Maria Isabel Carvalho |
title |
Movement patterns of humpback whales (Megaptera novaeangliae) reoccupying a Brazilian breeding ground |
title_short |
Movement patterns of humpback whales (Megaptera novaeangliae) reoccupying a Brazilian breeding ground |
title_full |
Movement patterns of humpback whales (Megaptera novaeangliae) reoccupying a Brazilian breeding ground |
title_fullStr |
Movement patterns of humpback whales (Megaptera novaeangliae) reoccupying a Brazilian breeding ground |
title_full_unstemmed |
Movement patterns of humpback whales (Megaptera novaeangliae) reoccupying a Brazilian breeding ground |
title_sort |
movement patterns of humpback whales (megaptera novaeangliae) reoccupying a brazilian breeding ground |
publisher |
SciELO journals |
publishDate |
2018 |
url |
https://dx.doi.org/10.6084/m9.figshare.7185797 https://scielo.figshare.com/articles/Movement_patterns_of_humpback_whales_Megaptera_novaeangliae_reoccupying_a_Brazilian_breeding_ground/7185797 |
genre |
Megaptera novaeangliae |
genre_facet |
Megaptera novaeangliae |
op_relation |
https://dx.doi.org/10.1590/1676-0611-bn-2018-0567 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.7185797 https://doi.org/10.1590/1676-0611-bn-2018-0567 |
_version_ |
1766067516115779584 |