Spatial ecology of humpback whales in breeding areas : habitats, distribution and movements in the South Pacific
Understanding the social and environmental drivers of the distribution and movements of marine megafauna is essential to their conservation. Cetaceans are elusive and mobile species, whose management requires an improved understanding of habitat use patterns. This thesis is aimed at investigating th...
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fttriple:oai:gotriple.eu:10670/1.rpdf6m 2023-05-15T16:36:00+02:00 Spatial ecology of humpback whales in breeding areas : habitats, distribution and movements in the South Pacific Écologie spatiale des baleines à bosse en zone de reproduction : habitats, distribution et mouvements dans le Pacifique Sud Derville, Solène Ecologie marine tropicale des océans Pacifique et Indien (ENTROPIE Nouvelle-Calédonie ) Institut de Recherche pour le Développement (IRD Nouvelle-Calédonie )-Ifremer - Nouvelle-Calédonie Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de la Nouvelle-Calédonie (UNC) Sorbonne Université Claire Garrigue 2018-12-03 https://tel.archives-ouvertes.fr/tel-02865352v2/file/these_DERVILLE_Sonia_2018.pdf https://tel.archives-ouvertes.fr/tel-02865352 en eng HAL CCSD NNT: 2018SORUS374 tel-02865352 10670/1.rpdf6m https://tel.archives-ouvertes.fr/tel-02865352v2/file/these_DERVILLE_Sonia_2018.pdf https://tel.archives-ouvertes.fr/tel-02865352 other Le serveur TEL (thèses-en-ligne) Biodiversity and Ecology. Sorbonne Université, 2018. English. ⟨NNT : 2018SORUS374⟩ Habitat mapping Spatial management Movements Humpback whale Species Distribution Models Baleine à bosse Modèles de distribution d’espèces Déplacements Cartographie d’habitats Gestion spatiale envir geo Thesis https://vocabularies.coar-repositories.org/resource_types/c_46ec/ 2018 fttriple 2023-01-22T17:40:47Z Understanding the social and environmental drivers of the distribution and movements of marine megafauna is essential to their conservation. Cetaceans are elusive and mobile species, whose management requires an improved understanding of habitat use patterns. This thesis is aimed at investigating the spatial ecology of an endangered population of humpback whales (Megaptera novaeangliae) in the South Pacific Ocean. Using a multidisciplinary dataset collected between 1995 and 2018 in New Caledonia and Oceania, this thesis addressed three objectives, 1) investigate best practices to cetacean species distribution modeling, 2) acquire fundamental knowledge on the distribution, habitats and movements of humpback whales in Oceania breeding grounds, and 3) predict priority conservation areas and potential threats to humpback whales. Modeling the distribution of a migratory large whale from non-systematic visual survey and citizen science data provided valuable space-use predictions when uneven survey effort and statistical overfitting were specifically addressed. Generalized Additive Models were favored for their complexity trade-off, ecological interpretability and transferability. Models of habitat use revealed a preference for a diversity of shallow habitats (low island and atoll lagoons, barrier reef and high island slopes, banks and seamounts) spread over a relatively large thermal range over Oceania. Shallow seamounts and banks were identified as major breeding and nursing habitats and play a key role in the connectivity within and between populations. This unique and unexpected use of pelagic waters has important consequences for the spatial management of humpback whales. The predictions of present and future suitable humpback whale breeding habitats at multiples scales provide science-based evidence for priority conservation areas, and enable mitigation of threats from anthropogenic activities and climate change in the South Pacific. Comprendre les facteurs sociaux et environnementaux de la distribution et des ... Thesis Humpback Whale Low Island Megaptera novaeangliae Baleine à bosse Unknown Baleine ENVELOPE(140.012,140.012,-66.649,-66.649) High Island ENVELOPE(167.000,167.000,-77.500,-77.500) Pacific |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
Habitat mapping Spatial management Movements Humpback whale Species Distribution Models Baleine à bosse Modèles de distribution d’espèces Déplacements Cartographie d’habitats Gestion spatiale envir geo |
spellingShingle |
Habitat mapping Spatial management Movements Humpback whale Species Distribution Models Baleine à bosse Modèles de distribution d’espèces Déplacements Cartographie d’habitats Gestion spatiale envir geo Derville, Solène Spatial ecology of humpback whales in breeding areas : habitats, distribution and movements in the South Pacific |
topic_facet |
Habitat mapping Spatial management Movements Humpback whale Species Distribution Models Baleine à bosse Modèles de distribution d’espèces Déplacements Cartographie d’habitats Gestion spatiale envir geo |
description |
Understanding the social and environmental drivers of the distribution and movements of marine megafauna is essential to their conservation. Cetaceans are elusive and mobile species, whose management requires an improved understanding of habitat use patterns. This thesis is aimed at investigating the spatial ecology of an endangered population of humpback whales (Megaptera novaeangliae) in the South Pacific Ocean. Using a multidisciplinary dataset collected between 1995 and 2018 in New Caledonia and Oceania, this thesis addressed three objectives, 1) investigate best practices to cetacean species distribution modeling, 2) acquire fundamental knowledge on the distribution, habitats and movements of humpback whales in Oceania breeding grounds, and 3) predict priority conservation areas and potential threats to humpback whales. Modeling the distribution of a migratory large whale from non-systematic visual survey and citizen science data provided valuable space-use predictions when uneven survey effort and statistical overfitting were specifically addressed. Generalized Additive Models were favored for their complexity trade-off, ecological interpretability and transferability. Models of habitat use revealed a preference for a diversity of shallow habitats (low island and atoll lagoons, barrier reef and high island slopes, banks and seamounts) spread over a relatively large thermal range over Oceania. Shallow seamounts and banks were identified as major breeding and nursing habitats and play a key role in the connectivity within and between populations. This unique and unexpected use of pelagic waters has important consequences for the spatial management of humpback whales. The predictions of present and future suitable humpback whale breeding habitats at multiples scales provide science-based evidence for priority conservation areas, and enable mitigation of threats from anthropogenic activities and climate change in the South Pacific. Comprendre les facteurs sociaux et environnementaux de la distribution et des ... |
author2 |
Ecologie marine tropicale des océans Pacifique et Indien (ENTROPIE Nouvelle-Calédonie ) Institut de Recherche pour le Développement (IRD Nouvelle-Calédonie )-Ifremer - Nouvelle-Calédonie Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de la Nouvelle-Calédonie (UNC) Sorbonne Université Claire Garrigue |
format |
Thesis |
author |
Derville, Solène |
author_facet |
Derville, Solène |
author_sort |
Derville, Solène |
title |
Spatial ecology of humpback whales in breeding areas : habitats, distribution and movements in the South Pacific |
title_short |
Spatial ecology of humpback whales in breeding areas : habitats, distribution and movements in the South Pacific |
title_full |
Spatial ecology of humpback whales in breeding areas : habitats, distribution and movements in the South Pacific |
title_fullStr |
Spatial ecology of humpback whales in breeding areas : habitats, distribution and movements in the South Pacific |
title_full_unstemmed |
Spatial ecology of humpback whales in breeding areas : habitats, distribution and movements in the South Pacific |
title_sort |
spatial ecology of humpback whales in breeding areas : habitats, distribution and movements in the south pacific |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://tel.archives-ouvertes.fr/tel-02865352v2/file/these_DERVILLE_Sonia_2018.pdf https://tel.archives-ouvertes.fr/tel-02865352 |
long_lat |
ENVELOPE(140.012,140.012,-66.649,-66.649) ENVELOPE(167.000,167.000,-77.500,-77.500) |
geographic |
Baleine High Island Pacific |
geographic_facet |
Baleine High Island Pacific |
genre |
Humpback Whale Low Island Megaptera novaeangliae Baleine à bosse |
genre_facet |
Humpback Whale Low Island Megaptera novaeangliae Baleine à bosse |
op_source |
Le serveur TEL (thèses-en-ligne) Biodiversity and Ecology. Sorbonne Université, 2018. English. ⟨NNT : 2018SORUS374⟩ |
op_relation |
NNT: 2018SORUS374 tel-02865352 10670/1.rpdf6m https://tel.archives-ouvertes.fr/tel-02865352v2/file/these_DERVILLE_Sonia_2018.pdf https://tel.archives-ouvertes.fr/tel-02865352 |
op_rights |
other |
_version_ |
1766026319893626880 |