A short review of the distribution of short-beaked common dolphins (Delphinus delphis) in the central and eastern North Atlantic with an abundance estimate for part of this area
This paper uses data from 3 programmes: (1) the North Atlantic Sightings Surveys (NASS) surveys undertaken throughout much of the central and eastern North Atlantic north of about 40° N in 1987, 1989, 1995 and 2001; (2) the MICA-93 programme; and (3) the north eastern Atlantic segment of the Small C...
Published in: | NAMMCO Scientific Publications |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Septentrio Academic Publishing
2009
|
Subjects: | |
Online Access: | https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2714 https://doi.org/10.7557/3.2714 |
id |
ftunitroemsoe:oai:ojs.henry.ub.uit.no:article/2714 |
---|---|
record_format |
openpolar |
spelling |
ftunitroemsoe:oai:ojs.henry.ub.uit.no:article/2714 2023-05-15T17:29:11+02:00 A short review of the distribution of short-beaked common dolphins (Delphinus delphis) in the central and eastern North Atlantic with an abundance estimate for part of this area Cañadas, Ana Donovan, Greg P Desportes, Geneviève Borchers, David L 2009-09-01 application/pdf https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2714 https://doi.org/10.7557/3.2714 eng eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2714/2564 https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2714 doi:10.7557/3.2714 Copyright (c) 2009 Ana Cañadas, Greg P Donovan, Geneviève Desportes, David L Borchers http://creativecommons.org/licenses/by/3.0/ CC-BY NAMMCO Scientific Publications; Vol 7: North Atlantic Sightings Surveys: Counting whales in the North Atlantic, 1987-2001; 201-220 2309-2491 1560-2206 10.7557/3.7 surveys short-beaked common dolphins Delphinus delphis distribution info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2009 ftunitroemsoe https://doi.org/10.7557/3.2714 https://doi.org/10.7557/3.7 2021-08-16T16:39:00Z This paper uses data from 3 programmes: (1) the North Atlantic Sightings Surveys (NASS) surveys undertaken throughout much of the central and eastern North Atlantic north of about 40° N in 1987, 1989, 1995 and 2001; (2) the MICA-93 programme; and (3) the north eastern Atlantic segment of the Small Cetacean Abundance in the North Sea (SCANS) survey in 1994. The data from all surveys were used to examine the distribution of common dolphins in the NE Atlantic. No sightings were made north of 57° N. An initial attempt to examine distribution against 4 potential non biological explanatory variables was made. A simple interpretation of the preliminary analyses presented here is that the primary areas for groups of common dolphins were in waters over 15° C and depths of 400-1,000 m (there does appear a link with shelf features), between around 49°-55° N especially between 20°-30°W. An illustrative example of spatial modelling is presented. Only for 1 year (and part of the total survey area) were there sufficient data to attempt to estimate abundance: 1995. The estimated abundance in the W Block of the NASS-95 Faroese survey was 273,159 (cv=0.26; 95% CI=153,392-435,104) short-beaked common dolphins. This estimate is corrected for animals missed on the trackline (g(0)) and for responsive movement. Article in Journal/Newspaper North Atlantic University of Tromsø: Septentrio Academic Publishing NAMMCO Scientific Publications 7 201 |
institution |
Open Polar |
collection |
University of Tromsø: Septentrio Academic Publishing |
op_collection_id |
ftunitroemsoe |
language |
English |
topic |
surveys short-beaked common dolphins Delphinus delphis distribution |
spellingShingle |
surveys short-beaked common dolphins Delphinus delphis distribution Cañadas, Ana Donovan, Greg P Desportes, Geneviève Borchers, David L A short review of the distribution of short-beaked common dolphins (Delphinus delphis) in the central and eastern North Atlantic with an abundance estimate for part of this area |
topic_facet |
surveys short-beaked common dolphins Delphinus delphis distribution |
description |
This paper uses data from 3 programmes: (1) the North Atlantic Sightings Surveys (NASS) surveys undertaken throughout much of the central and eastern North Atlantic north of about 40° N in 1987, 1989, 1995 and 2001; (2) the MICA-93 programme; and (3) the north eastern Atlantic segment of the Small Cetacean Abundance in the North Sea (SCANS) survey in 1994. The data from all surveys were used to examine the distribution of common dolphins in the NE Atlantic. No sightings were made north of 57° N. An initial attempt to examine distribution against 4 potential non biological explanatory variables was made. A simple interpretation of the preliminary analyses presented here is that the primary areas for groups of common dolphins were in waters over 15° C and depths of 400-1,000 m (there does appear a link with shelf features), between around 49°-55° N especially between 20°-30°W. An illustrative example of spatial modelling is presented. Only for 1 year (and part of the total survey area) were there sufficient data to attempt to estimate abundance: 1995. The estimated abundance in the W Block of the NASS-95 Faroese survey was 273,159 (cv=0.26; 95% CI=153,392-435,104) short-beaked common dolphins. This estimate is corrected for animals missed on the trackline (g(0)) and for responsive movement. |
format |
Article in Journal/Newspaper |
author |
Cañadas, Ana Donovan, Greg P Desportes, Geneviève Borchers, David L |
author_facet |
Cañadas, Ana Donovan, Greg P Desportes, Geneviève Borchers, David L |
author_sort |
Cañadas, Ana |
title |
A short review of the distribution of short-beaked common dolphins (Delphinus delphis) in the central and eastern North Atlantic with an abundance estimate for part of this area |
title_short |
A short review of the distribution of short-beaked common dolphins (Delphinus delphis) in the central and eastern North Atlantic with an abundance estimate for part of this area |
title_full |
A short review of the distribution of short-beaked common dolphins (Delphinus delphis) in the central and eastern North Atlantic with an abundance estimate for part of this area |
title_fullStr |
A short review of the distribution of short-beaked common dolphins (Delphinus delphis) in the central and eastern North Atlantic with an abundance estimate for part of this area |
title_full_unstemmed |
A short review of the distribution of short-beaked common dolphins (Delphinus delphis) in the central and eastern North Atlantic with an abundance estimate for part of this area |
title_sort |
short review of the distribution of short-beaked common dolphins (delphinus delphis) in the central and eastern north atlantic with an abundance estimate for part of this area |
publisher |
Septentrio Academic Publishing |
publishDate |
2009 |
url |
https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2714 https://doi.org/10.7557/3.2714 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
NAMMCO Scientific Publications; Vol 7: North Atlantic Sightings Surveys: Counting whales in the North Atlantic, 1987-2001; 201-220 2309-2491 1560-2206 10.7557/3.7 |
op_relation |
https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2714/2564 https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2714 doi:10.7557/3.2714 |
op_rights |
Copyright (c) 2009 Ana Cañadas, Greg P Donovan, Geneviève Desportes, David L Borchers http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.7557/3.2714 https://doi.org/10.7557/3.7 |
container_title |
NAMMCO Scientific Publications |
container_volume |
7 |
container_start_page |
201 |
_version_ |
1766122819482025984 |