OSPAR request on indicator assessment of coastal bottlenose dolphins
ICES has collated all available relevant data on coastal bottlenose dolphins, Tursiops truncatus , in the OSPAR Regions II, III, and IV. Most data are from small-scale surveys at particular sites within the bottlenose dolphin assessment units (AUs). A large variation in the intensity and coverage of...
Main Author: | |
---|---|
Format: | Report |
Language: | unknown |
Published: |
ICES Advice: Special Requests
2022
|
Subjects: | |
Online Access: | https://dx.doi.org/10.17895/ices.advice.18686933 https://ices-library.figshare.com/articles/report/OSPAR_request_on_indicator_assessment_of_coastal_bottlenose_dolphins/18686933 |
id |
ftdatacite:10.17895/ices.advice.18686933 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.17895/ices.advice.18686933 2023-05-15T17:41:26+02:00 OSPAR request on indicator assessment of coastal bottlenose dolphins ICES 2022 https://dx.doi.org/10.17895/ices.advice.18686933 https://ices-library.figshare.com/articles/report/OSPAR_request_on_indicator_assessment_of_coastal_bottlenose_dolphins/18686933 unknown ICES Advice: Special Requests ICES Custom Licence https://www.ices.dk/Pages/library_policies.aspx Atlantic, Northeast ICES Ecoregion; FAO area 27 Fisheries and aquaculture Oceanic Northeast Atlantic ICES Ecoregion report Report Other 2022 ftdatacite https://doi.org/10.17895/ices.advice.18686933 2022-04-01T14:36:30Z ICES has collated all available relevant data on coastal bottlenose dolphins, Tursiops truncatus , in the OSPAR Regions II, III, and IV. Most data are from small-scale surveys at particular sites within the bottlenose dolphin assessment units (AUs). A large variation in the intensity and coverage of survey effort leads to strong spatial biases in data availability, making assessment at an AU scale challenging. Only five sites have sufficient data to allow assessment of trends in abundance. One of the sites withsufficient data showed a decline beyond the target threshold. Abundance estimates for bottlenose dolphins typically have wide confidence limits, and the power to detect even relatively strong trends may be limited. If the abundance of coastal bottlenose dolphins is to be used as an indicator, then either monitoring will need to increase to cover the entirety of each assessment unit at frequent intervals, or the relationship between the abundance of local groups and that of the assessment units would need to be determined. Both of these options would require the investment of further resources. Report Northeast Atlantic 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 |
Atlantic, Northeast ICES Ecoregion; FAO area 27 Fisheries and aquaculture Oceanic Northeast Atlantic ICES Ecoregion |
spellingShingle |
Atlantic, Northeast ICES Ecoregion; FAO area 27 Fisheries and aquaculture Oceanic Northeast Atlantic ICES Ecoregion ICES OSPAR request on indicator assessment of coastal bottlenose dolphins |
topic_facet |
Atlantic, Northeast ICES Ecoregion; FAO area 27 Fisheries and aquaculture Oceanic Northeast Atlantic ICES Ecoregion |
description |
ICES has collated all available relevant data on coastal bottlenose dolphins, Tursiops truncatus , in the OSPAR Regions II, III, and IV. Most data are from small-scale surveys at particular sites within the bottlenose dolphin assessment units (AUs). A large variation in the intensity and coverage of survey effort leads to strong spatial biases in data availability, making assessment at an AU scale challenging. Only five sites have sufficient data to allow assessment of trends in abundance. One of the sites withsufficient data showed a decline beyond the target threshold. Abundance estimates for bottlenose dolphins typically have wide confidence limits, and the power to detect even relatively strong trends may be limited. If the abundance of coastal bottlenose dolphins is to be used as an indicator, then either monitoring will need to increase to cover the entirety of each assessment unit at frequent intervals, or the relationship between the abundance of local groups and that of the assessment units would need to be determined. Both of these options would require the investment of further resources. |
format |
Report |
author |
ICES |
author_facet |
ICES |
author_sort |
ICES |
title |
OSPAR request on indicator assessment of coastal bottlenose dolphins |
title_short |
OSPAR request on indicator assessment of coastal bottlenose dolphins |
title_full |
OSPAR request on indicator assessment of coastal bottlenose dolphins |
title_fullStr |
OSPAR request on indicator assessment of coastal bottlenose dolphins |
title_full_unstemmed |
OSPAR request on indicator assessment of coastal bottlenose dolphins |
title_sort |
ospar request on indicator assessment of coastal bottlenose dolphins |
publisher |
ICES Advice: Special Requests |
publishDate |
2022 |
url |
https://dx.doi.org/10.17895/ices.advice.18686933 https://ices-library.figshare.com/articles/report/OSPAR_request_on_indicator_assessment_of_coastal_bottlenose_dolphins/18686933 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_rights |
ICES Custom Licence https://www.ices.dk/Pages/library_policies.aspx |
op_doi |
https://doi.org/10.17895/ices.advice.18686933 |
_version_ |
1766142980154982400 |