Comparing Distribution of Harbour Porpoises (Phocoena phocoena) Derived from Satellite Telemetry and Passive Acoustic Monitoring
Cetacean monitoring is essential in determining the status of a population. Different monitoring methods should reflect the real trends in abundance and patterns in distribution, and results should therefore ideally be independent of the selected method. Here, we compare two independent methods of d...
Published in: | PLOS ONE |
---|---|
Main Authors: | , , , , , , , , , |
Format: | Text |
Language: | English |
Published: |
Public Library of Science
2016
|
Subjects: | |
Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4963116/ http://www.ncbi.nlm.nih.gov/pubmed/27463509 https://doi.org/10.1371/journal.pone.0158788 |
id |
ftpubmed:oai:pubmedcentral.nih.gov:4963116 |
---|---|
record_format |
openpolar |
spelling |
ftpubmed:oai:pubmedcentral.nih.gov:4963116 2023-05-15T16:33:21+02:00 Comparing Distribution of Harbour Porpoises (Phocoena phocoena) Derived from Satellite Telemetry and Passive Acoustic Monitoring Mikkelsen, Lonnie Rigét, Frank F. Kyhn, Line A. Sveegaard, Signe Dietz, Rune Tougaard, Jakob Carlström, Julia A. K. Carlén, Ida Koblitz, Jens C. Teilmann, Jonas 2016-07-27 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4963116/ http://www.ncbi.nlm.nih.gov/pubmed/27463509 https://doi.org/10.1371/journal.pone.0158788 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4963116/ http://www.ncbi.nlm.nih.gov/pubmed/27463509 http://dx.doi.org/10.1371/journal.pone.0158788 © 2016 Mikkelsen et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. CC-BY Research Article Text 2016 ftpubmed https://doi.org/10.1371/journal.pone.0158788 2016-08-14T00:08:33Z Cetacean monitoring is essential in determining the status of a population. Different monitoring methods should reflect the real trends in abundance and patterns in distribution, and results should therefore ideally be independent of the selected method. Here, we compare two independent methods of describing harbour porpoise (Phocoena phocoena) relative distribution pattern in the western Baltic Sea. Satellite locations from 13 tagged harbour porpoises were used to build a Maximum Entropy (MaxEnt) model of suitable habitats. The data set was subsampled to one location every second day, which were sufficient to make reliable models over the summer (Jun-Aug) and autumn (Sep-Nov) seasons. The modelled results were compared to harbour porpoise acoustic activity obtained from 36 static acoustic monitoring stations (C-PODs) covering the same area. The C-POD data was expressed as the percentage of porpoise positive days/hours (the number of days/hours per day with porpoise detections) by season. The MaxEnt model and C-POD data showed a significant linear relationship with a strong decline in porpoise occurrence from west to east. This study shows that two very different methods provide comparable information on relative distribution patterns of harbour porpoises even in a low density area. Text Harbour porpoise Phocoena phocoena PubMed Central (PMC) PLOS ONE 11 7 e0158788 |
institution |
Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Research Article |
spellingShingle |
Research Article Mikkelsen, Lonnie Rigét, Frank F. Kyhn, Line A. Sveegaard, Signe Dietz, Rune Tougaard, Jakob Carlström, Julia A. K. Carlén, Ida Koblitz, Jens C. Teilmann, Jonas Comparing Distribution of Harbour Porpoises (Phocoena phocoena) Derived from Satellite Telemetry and Passive Acoustic Monitoring |
topic_facet |
Research Article |
description |
Cetacean monitoring is essential in determining the status of a population. Different monitoring methods should reflect the real trends in abundance and patterns in distribution, and results should therefore ideally be independent of the selected method. Here, we compare two independent methods of describing harbour porpoise (Phocoena phocoena) relative distribution pattern in the western Baltic Sea. Satellite locations from 13 tagged harbour porpoises were used to build a Maximum Entropy (MaxEnt) model of suitable habitats. The data set was subsampled to one location every second day, which were sufficient to make reliable models over the summer (Jun-Aug) and autumn (Sep-Nov) seasons. The modelled results were compared to harbour porpoise acoustic activity obtained from 36 static acoustic monitoring stations (C-PODs) covering the same area. The C-POD data was expressed as the percentage of porpoise positive days/hours (the number of days/hours per day with porpoise detections) by season. The MaxEnt model and C-POD data showed a significant linear relationship with a strong decline in porpoise occurrence from west to east. This study shows that two very different methods provide comparable information on relative distribution patterns of harbour porpoises even in a low density area. |
format |
Text |
author |
Mikkelsen, Lonnie Rigét, Frank F. Kyhn, Line A. Sveegaard, Signe Dietz, Rune Tougaard, Jakob Carlström, Julia A. K. Carlén, Ida Koblitz, Jens C. Teilmann, Jonas |
author_facet |
Mikkelsen, Lonnie Rigét, Frank F. Kyhn, Line A. Sveegaard, Signe Dietz, Rune Tougaard, Jakob Carlström, Julia A. K. Carlén, Ida Koblitz, Jens C. Teilmann, Jonas |
author_sort |
Mikkelsen, Lonnie |
title |
Comparing Distribution of Harbour Porpoises (Phocoena phocoena) Derived from Satellite Telemetry and Passive Acoustic Monitoring |
title_short |
Comparing Distribution of Harbour Porpoises (Phocoena phocoena) Derived from Satellite Telemetry and Passive Acoustic Monitoring |
title_full |
Comparing Distribution of Harbour Porpoises (Phocoena phocoena) Derived from Satellite Telemetry and Passive Acoustic Monitoring |
title_fullStr |
Comparing Distribution of Harbour Porpoises (Phocoena phocoena) Derived from Satellite Telemetry and Passive Acoustic Monitoring |
title_full_unstemmed |
Comparing Distribution of Harbour Porpoises (Phocoena phocoena) Derived from Satellite Telemetry and Passive Acoustic Monitoring |
title_sort |
comparing distribution of harbour porpoises (phocoena phocoena) derived from satellite telemetry and passive acoustic monitoring |
publisher |
Public Library of Science |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4963116/ http://www.ncbi.nlm.nih.gov/pubmed/27463509 https://doi.org/10.1371/journal.pone.0158788 |
genre |
Harbour porpoise Phocoena phocoena |
genre_facet |
Harbour porpoise Phocoena phocoena |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4963116/ http://www.ncbi.nlm.nih.gov/pubmed/27463509 http://dx.doi.org/10.1371/journal.pone.0158788 |
op_rights |
© 2016 Mikkelsen et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0158788 |
container_title |
PLOS ONE |
container_volume |
11 |
container_issue |
7 |
container_start_page |
e0158788 |
_version_ |
1766023043172270080 |