Modelled annual abundance of humpback whales Megaptera novaeangliae around Bermuda, 2011-2020
Modelled demographic parameters of North Atlantic humpback whales (Megaptera novaeangliae) visiting Bermuda are provided for every year from 2011 to 2010. The data set was constructed to determine abundance and abundance trends of humpback whales visiting Bermuda, a migratory stopover. Photographs o...
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Format: | Dataset |
Language: | English |
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PANGAEA
2022
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.945442 https://doi.org/10.1594/PANGAEA.945442 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.945442 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Abundance Bermuda_humpback_whale_demographic_survey Bermuda Atlantic Ocean cetacean humpback whale iAtlantic Integrated Assessment of Atlantic Marine Ecosystems in Space and Time Megaptera novaeangliae Model Time series |
spellingShingle |
Abundance Bermuda_humpback_whale_demographic_survey Bermuda Atlantic Ocean cetacean humpback whale iAtlantic Integrated Assessment of Atlantic Marine Ecosystems in Space and Time Megaptera novaeangliae Model Time series Grove, Thomas King, Ruth Henry, Lea-Anne Stevenson, Andrew Modelled annual abundance of humpback whales Megaptera novaeangliae around Bermuda, 2011-2020 |
topic_facet |
Abundance Bermuda_humpback_whale_demographic_survey Bermuda Atlantic Ocean cetacean humpback whale iAtlantic Integrated Assessment of Atlantic Marine Ecosystems in Space and Time Megaptera novaeangliae Model Time series |
description |
Modelled demographic parameters of North Atlantic humpback whales (Megaptera novaeangliae) visiting Bermuda are provided for every year from 2011 to 2010. The data set was constructed to determine abundance and abundance trends of humpback whales visiting Bermuda, a migratory stopover. Photographs of the ventral side of humpback whale tail flukes were taken during dedicated vessel-based surveys between December and May each year between 2010 and 2020, and were daily whenever possible (weather-permitting). Surveys followed a haphazard regime to maximize encounters with whales and focused spatially on the southwestern Bermuda Platform and the Challenger Bank seamount*. Surveys were conducted in closing mode; whales were approached and photographed on detection, and a focal follow was conducted at each encounter. Images of suitable quality were used for individual photo-identification via scarring patterns and coloration (Calambokidis et al., 2001). The resulting catalogue was used to construct annual sighting histories for each identifiable animal. Annual demographic parameters, including abundance, were reconstructed from sighting histories using capture-recapture (CR) methods. A Cormack-Jolly-Seber (CJS) model (Lebreton et al., 1992) was fit through maximum likelihood estimation to estimate annual apparent survival (Φ) and detection probability (p). The final model specification was informed by goodness-of-fit tests and AICc. To account for variable annual effort, p was linked to modified annual survey effort (based on number of survey days) via logistic regression (resulting in a different p value for each year). To account for transient animals that only visit the study area once, Φ was stratified into survival following the first sighting (Φ0) and survival following subsequent sightings (Φ1+). From the output of this CJS model, the following parameters were derived: annual rate of transience (T), number of transient animals (NT), number of non-transient animals (NR) and total abundance (Ntot). Ntot was ... |
format |
Dataset |
author |
Grove, Thomas King, Ruth Henry, Lea-Anne Stevenson, Andrew |
author_facet |
Grove, Thomas King, Ruth Henry, Lea-Anne Stevenson, Andrew |
author_sort |
Grove, Thomas |
title |
Modelled annual abundance of humpback whales Megaptera novaeangliae around Bermuda, 2011-2020 |
title_short |
Modelled annual abundance of humpback whales Megaptera novaeangliae around Bermuda, 2011-2020 |
title_full |
Modelled annual abundance of humpback whales Megaptera novaeangliae around Bermuda, 2011-2020 |
title_fullStr |
Modelled annual abundance of humpback whales Megaptera novaeangliae around Bermuda, 2011-2020 |
title_full_unstemmed |
Modelled annual abundance of humpback whales Megaptera novaeangliae around Bermuda, 2011-2020 |
title_sort |
modelled annual abundance of humpback whales megaptera novaeangliae around bermuda, 2011-2020 |
publisher |
PANGAEA |
publishDate |
2022 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.945442 https://doi.org/10.1594/PANGAEA.945442 |
op_coverage |
MEDIAN LATITUDE: 32.275892 * MEDIAN LONGITUDE: -64.863209 * SOUTH-BOUND LATITUDE: 32.044416 * WEST-BOUND LONGITUDE: -65.159162 * NORTH-BOUND LATITUDE: 32.507369 * EAST-BOUND LONGITUDE: -64.567257 * DATE/TIME START: 2010-12-01T00:00:00 * DATE/TIME END: 2020-05-31T00:00:00 |
long_lat |
ENVELOPE(-65.159162,-64.567257,32.507369,32.044416) |
genre |
Humpback Whale Megaptera novaeangliae North Atlantic |
genre_facet |
Humpback Whale Megaptera novaeangliae North Atlantic |
op_relation |
Grove, Thomas; King, Ruth; Stevenson, Andrew; Henry, Lea-Anne (2023): A decade of humpback whale abundance estimates at Bermuda, an oceanic migratory stopover site. Frontiers in Marine Science, 9, https://doi.org/10.3389/fmars.2022.971801 Calambokidis, John; Steiger, G H; Straley, Janice M; Herman, Louis M; Cerchio, Salvatore; Salden, Dan R; Jorge, Urban R; Jacobsen, Jeff K; Von Ziegesar, Olga; Balcomb, Kenneth C; Gabriele, Christine M; Dahlheim, Marilyn E (2001): MOVEMENTS AND POPULATION STRUCTURE OF HUMPBACK WHALES IN THE NORTH PACIFIC. Marine Mammal Science, 17(4), 769-794, https://doi.org/10.1111/j.1748-7692.2001.tb01298.x Horvitz, D G; Thompson, D J (1952): A Generalization of Sampling Without Replacement from a Finite Universe. Journal of the American Statistical Association, 47(260), 663-685, https://doi.org/10.1080/01621459.1952.10483446 Lebreton, Jean-Dominique; Burnham, Kenneth; Clobert, Jean (1992): Modeling Survival and Testing Biological Hypotheses Using Marked Animals: A Unified Approach with Case Studies. Ecological Monographs, 62(1), 67-118, https://doi.org/10.2307/2937171 https://doi.pangaea.de/10.1594/PANGAEA.945442 https://doi.org/10.1594/PANGAEA.945442 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.94544210.3389/fmars.2022.97180110.1111/j.1748-7692.2001.tb01298.x10.1080/01621459.1952.1048344610.2307/2937171 |
_version_ |
1799481367746052096 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.945442 2024-05-19T07:41:45+00:00 Modelled annual abundance of humpback whales Megaptera novaeangliae around Bermuda, 2011-2020 Grove, Thomas King, Ruth Henry, Lea-Anne Stevenson, Andrew MEDIAN LATITUDE: 32.275892 * MEDIAN LONGITUDE: -64.863209 * SOUTH-BOUND LATITUDE: 32.044416 * WEST-BOUND LONGITUDE: -65.159162 * NORTH-BOUND LATITUDE: 32.507369 * EAST-BOUND LONGITUDE: -64.567257 * DATE/TIME START: 2010-12-01T00:00:00 * DATE/TIME END: 2020-05-31T00:00:00 2022 application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, 18.4 kBytes https://doi.pangaea.de/10.1594/PANGAEA.945442 https://doi.org/10.1594/PANGAEA.945442 en eng PANGAEA Grove, Thomas; King, Ruth; Stevenson, Andrew; Henry, Lea-Anne (2023): A decade of humpback whale abundance estimates at Bermuda, an oceanic migratory stopover site. Frontiers in Marine Science, 9, https://doi.org/10.3389/fmars.2022.971801 Calambokidis, John; Steiger, G H; Straley, Janice M; Herman, Louis M; Cerchio, Salvatore; Salden, Dan R; Jorge, Urban R; Jacobsen, Jeff K; Von Ziegesar, Olga; Balcomb, Kenneth C; Gabriele, Christine M; Dahlheim, Marilyn E (2001): MOVEMENTS AND POPULATION STRUCTURE OF HUMPBACK WHALES IN THE NORTH PACIFIC. Marine Mammal Science, 17(4), 769-794, https://doi.org/10.1111/j.1748-7692.2001.tb01298.x Horvitz, D G; Thompson, D J (1952): A Generalization of Sampling Without Replacement from a Finite Universe. Journal of the American Statistical Association, 47(260), 663-685, https://doi.org/10.1080/01621459.1952.10483446 Lebreton, Jean-Dominique; Burnham, Kenneth; Clobert, Jean (1992): Modeling Survival and Testing Biological Hypotheses Using Marked Animals: A Unified Approach with Case Studies. Ecological Monographs, 62(1), 67-118, https://doi.org/10.2307/2937171 https://doi.pangaea.de/10.1594/PANGAEA.945442 https://doi.org/10.1594/PANGAEA.945442 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess Abundance Bermuda_humpback_whale_demographic_survey Bermuda Atlantic Ocean cetacean humpback whale iAtlantic Integrated Assessment of Atlantic Marine Ecosystems in Space and Time Megaptera novaeangliae Model Time series Dataset 2022 ftpangaea https://doi.org/10.1594/PANGAEA.94544210.3389/fmars.2022.97180110.1111/j.1748-7692.2001.tb01298.x10.1080/01621459.1952.1048344610.2307/2937171 2024-04-23T23:36:33Z Modelled demographic parameters of North Atlantic humpback whales (Megaptera novaeangliae) visiting Bermuda are provided for every year from 2011 to 2010. The data set was constructed to determine abundance and abundance trends of humpback whales visiting Bermuda, a migratory stopover. Photographs of the ventral side of humpback whale tail flukes were taken during dedicated vessel-based surveys between December and May each year between 2010 and 2020, and were daily whenever possible (weather-permitting). Surveys followed a haphazard regime to maximize encounters with whales and focused spatially on the southwestern Bermuda Platform and the Challenger Bank seamount*. Surveys were conducted in closing mode; whales were approached and photographed on detection, and a focal follow was conducted at each encounter. Images of suitable quality were used for individual photo-identification via scarring patterns and coloration (Calambokidis et al., 2001). The resulting catalogue was used to construct annual sighting histories for each identifiable animal. Annual demographic parameters, including abundance, were reconstructed from sighting histories using capture-recapture (CR) methods. A Cormack-Jolly-Seber (CJS) model (Lebreton et al., 1992) was fit through maximum likelihood estimation to estimate annual apparent survival (Φ) and detection probability (p). The final model specification was informed by goodness-of-fit tests and AICc. To account for variable annual effort, p was linked to modified annual survey effort (based on number of survey days) via logistic regression (resulting in a different p value for each year). To account for transient animals that only visit the study area once, Φ was stratified into survival following the first sighting (Φ0) and survival following subsequent sightings (Φ1+). From the output of this CJS model, the following parameters were derived: annual rate of transience (T), number of transient animals (NT), number of non-transient animals (NR) and total abundance (Ntot). Ntot was ... Dataset Humpback Whale Megaptera novaeangliae North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-65.159162,-64.567257,32.507369,32.044416) |