A photo-identification-based assessment model of southern right whales Eubalaena australis surveyed in South African waters, with a focus onrecent low counts of mothers with calves ...
Photo-identification data for southern right whale cow–calf pairs on the South African calving grounds provide one of the longest abundance time-series for any whale population worldwide. Following a very steady increase from a heavily depleted state, surveys since 2015 reflect many notably low coun...
Main Authors: | , , , |
---|---|
Format: | Other Non-Article Part of Journal/Newspaper |
Language: | unknown |
Published: |
Taylor & Francis
2023
|
Subjects: | |
Online Access: | https://dx.doi.org/10.6084/m9.figshare.22657017.v1 https://tandf.figshare.com/articles/journal_contribution/A_photo-identification-based_assessment_model_of_southern_right_whales_i_Eubalaena_australis_i_surveyed_in_South_African_waters_with_a_focus_onrecent_low_counts_of_mothers_with_calves/22657017/1 |
id |
ftdatacite:10.6084/m9.figshare.22657017.v1 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.6084/m9.figshare.22657017.v1 2023-06-11T04:17:05+02:00 A photo-identification-based assessment model of southern right whales Eubalaena australis surveyed in South African waters, with a focus onrecent low counts of mothers with calves ... Brandão, A Ross-Gillespie, A Vermeulen, E Butterworth, DS 2023 https://dx.doi.org/10.6084/m9.figshare.22657017.v1 https://tandf.figshare.com/articles/journal_contribution/A_photo-identification-based_assessment_model_of_southern_right_whales_i_Eubalaena_australis_i_surveyed_in_South_African_waters_with_a_focus_onrecent_low_counts_of_mothers_with_calves/22657017/1 unknown Taylor & Francis https://dx.doi.org/10.2989/1814232x.2023.2172455 https://dx.doi.org/10.6084/m9.figshare.22657017 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 Evolutionary Biology FOS Biological sciences 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology Sociology FOS Sociology 69999 Biological Sciences not elsewhere classified Inorganic Chemistry FOS Chemical sciences Science Policy article-journal Journal contribution ScholarlyArticle Text 2023 ftdatacite https://doi.org/10.6084/m9.figshare.22657017.v110.2989/1814232x.2023.217245510.6084/m9.figshare.22657017 2023-06-01T11:07:01Z Photo-identification data for southern right whale cow–calf pairs on the South African calving grounds provide one of the longest abundance time-series for any whale population worldwide. Following a very steady increase from a heavily depleted state, surveys since 2015 reflect many notably low counts. These data are analysed to investigate whether these low counts can be explained by changes in reproduction-related parameters. This necessitates a modification to an earlier reproduction model for these whales, fit to photo-identification data to allow for early abortions; hence, a whale pregnant one year can again be pregnant the next. This can account for an increase in calving intervals in a way that differs from a whale resting for another year or an increase in late-abortion probability. This modification was able to account for the low number of sightings of cow–calf pairs over the 2015 to 2020 period (excepting for 2018), though the estimated probability of sighting a cow–calf pair in 2018 is somewhat ... Other Non-Article Part of Journal/Newspaper Southern Right Whale 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 |
Evolutionary Biology FOS Biological sciences 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology Sociology FOS Sociology 69999 Biological Sciences not elsewhere classified Inorganic Chemistry FOS Chemical sciences Science Policy |
spellingShingle |
Evolutionary Biology FOS Biological sciences 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology Sociology FOS Sociology 69999 Biological Sciences not elsewhere classified Inorganic Chemistry FOS Chemical sciences Science Policy Brandão, A Ross-Gillespie, A Vermeulen, E Butterworth, DS A photo-identification-based assessment model of southern right whales Eubalaena australis surveyed in South African waters, with a focus onrecent low counts of mothers with calves ... |
topic_facet |
Evolutionary Biology FOS Biological sciences 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology Sociology FOS Sociology 69999 Biological Sciences not elsewhere classified Inorganic Chemistry FOS Chemical sciences Science Policy |
description |
Photo-identification data for southern right whale cow–calf pairs on the South African calving grounds provide one of the longest abundance time-series for any whale population worldwide. Following a very steady increase from a heavily depleted state, surveys since 2015 reflect many notably low counts. These data are analysed to investigate whether these low counts can be explained by changes in reproduction-related parameters. This necessitates a modification to an earlier reproduction model for these whales, fit to photo-identification data to allow for early abortions; hence, a whale pregnant one year can again be pregnant the next. This can account for an increase in calving intervals in a way that differs from a whale resting for another year or an increase in late-abortion probability. This modification was able to account for the low number of sightings of cow–calf pairs over the 2015 to 2020 period (excepting for 2018), though the estimated probability of sighting a cow–calf pair in 2018 is somewhat ... |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Brandão, A Ross-Gillespie, A Vermeulen, E Butterworth, DS |
author_facet |
Brandão, A Ross-Gillespie, A Vermeulen, E Butterworth, DS |
author_sort |
Brandão, A |
title |
A photo-identification-based assessment model of southern right whales Eubalaena australis surveyed in South African waters, with a focus onrecent low counts of mothers with calves ... |
title_short |
A photo-identification-based assessment model of southern right whales Eubalaena australis surveyed in South African waters, with a focus onrecent low counts of mothers with calves ... |
title_full |
A photo-identification-based assessment model of southern right whales Eubalaena australis surveyed in South African waters, with a focus onrecent low counts of mothers with calves ... |
title_fullStr |
A photo-identification-based assessment model of southern right whales Eubalaena australis surveyed in South African waters, with a focus onrecent low counts of mothers with calves ... |
title_full_unstemmed |
A photo-identification-based assessment model of southern right whales Eubalaena australis surveyed in South African waters, with a focus onrecent low counts of mothers with calves ... |
title_sort |
photo-identification-based assessment model of southern right whales eubalaena australis surveyed in south african waters, with a focus onrecent low counts of mothers with calves ... |
publisher |
Taylor & Francis |
publishDate |
2023 |
url |
https://dx.doi.org/10.6084/m9.figshare.22657017.v1 https://tandf.figshare.com/articles/journal_contribution/A_photo-identification-based_assessment_model_of_southern_right_whales_i_Eubalaena_australis_i_surveyed_in_South_African_waters_with_a_focus_onrecent_low_counts_of_mothers_with_calves/22657017/1 |
genre |
Southern Right Whale |
genre_facet |
Southern Right Whale |
op_relation |
https://dx.doi.org/10.2989/1814232x.2023.2172455 https://dx.doi.org/10.6084/m9.figshare.22657017 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.6084/m9.figshare.22657017.v110.2989/1814232x.2023.217245510.6084/m9.figshare.22657017 |
_version_ |
1768375898209255424 |