Evaluating assumptions underlying a line transect an alysis of a 2004 Northwest Atlantic shipboard abundance survey for cetaceans ...
No abstracts are to be cited without prior reference to the author.Like all statistical inference methods, the reliability of the results rests on the validity of the assumptions made. Line transect sampling has four essential assumptions: 1) measurements are accurate; 2) animals do not response to...
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2024
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ftdatacite:10.17895/ices.pub.25350535 2024-04-28T08:32:43+00:00 Evaluating assumptions underlying a line transect an alysis of a 2004 Northwest Atlantic shipboard abundance survey for cetaceans ... Palka, Debra Lynn 2024 https://dx.doi.org/10.17895/ices.pub.25350535 https://ices-library.figshare.com/articles/conference_contribution/Evaluating_assumptions_underlying_a_line_transect_an_alysis_of_a_2004_Northwest_Atlantic_shipboard_abundance_survey_for_cetaceans/25350535 unknown ASC 2005 - R - Theme session https://ices-library.figshare.com/ICES-ASC-2005/groups ICES Custom Licence https://www.ices.dk/Pages/library_policies.aspx Fisheries and aquaculture Ecosystem observation, processes and dynamics article Other CreativeWork Conference contribution 2024 ftdatacite https://doi.org/10.17895/ices.pub.25350535 2024-04-02T12:00:32Z No abstracts are to be cited without prior reference to the author.Like all statistical inference methods, the reliability of the results rests on the validity of the assumptions made. Line transect sampling has four essential assumptions: 1) measurements are accurate; 2) animals do not response to the observer; 3) animals directly on the transect line are detected with certainty (g(0)=1); and 4) probability of detecting animals vary only with respect to the perpendicular distance between the animal group and the ship’s track line. These assumptions were evaluated for a 2004 shipboard line-transect survey conducted to estimate the abundance of northwest Atlantic cetaceans. Using distance experiments, it was determined that measurement error and rounding was minimal. Using swim directions, it was determined that pilot whales (Globicephala spp.) were attracted to the ship, while Risso’s dolphins (Grampus griseus) avoided the ship. Using data collected from two observation teams, it was determined that ... Article in Journal/Newspaper Northwest Atlantic DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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topic |
Fisheries and aquaculture Ecosystem observation, processes and dynamics |
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Fisheries and aquaculture Ecosystem observation, processes and dynamics Palka, Debra Lynn Evaluating assumptions underlying a line transect an alysis of a 2004 Northwest Atlantic shipboard abundance survey for cetaceans ... |
topic_facet |
Fisheries and aquaculture Ecosystem observation, processes and dynamics |
description |
No abstracts are to be cited without prior reference to the author.Like all statistical inference methods, the reliability of the results rests on the validity of the assumptions made. Line transect sampling has four essential assumptions: 1) measurements are accurate; 2) animals do not response to the observer; 3) animals directly on the transect line are detected with certainty (g(0)=1); and 4) probability of detecting animals vary only with respect to the perpendicular distance between the animal group and the ship’s track line. These assumptions were evaluated for a 2004 shipboard line-transect survey conducted to estimate the abundance of northwest Atlantic cetaceans. Using distance experiments, it was determined that measurement error and rounding was minimal. Using swim directions, it was determined that pilot whales (Globicephala spp.) were attracted to the ship, while Risso’s dolphins (Grampus griseus) avoided the ship. Using data collected from two observation teams, it was determined that ... |
format |
Article in Journal/Newspaper |
author |
Palka, Debra Lynn |
author_facet |
Palka, Debra Lynn |
author_sort |
Palka, Debra Lynn |
title |
Evaluating assumptions underlying a line transect an alysis of a 2004 Northwest Atlantic shipboard abundance survey for cetaceans ... |
title_short |
Evaluating assumptions underlying a line transect an alysis of a 2004 Northwest Atlantic shipboard abundance survey for cetaceans ... |
title_full |
Evaluating assumptions underlying a line transect an alysis of a 2004 Northwest Atlantic shipboard abundance survey for cetaceans ... |
title_fullStr |
Evaluating assumptions underlying a line transect an alysis of a 2004 Northwest Atlantic shipboard abundance survey for cetaceans ... |
title_full_unstemmed |
Evaluating assumptions underlying a line transect an alysis of a 2004 Northwest Atlantic shipboard abundance survey for cetaceans ... |
title_sort |
evaluating assumptions underlying a line transect an alysis of a 2004 northwest atlantic shipboard abundance survey for cetaceans ... |
publisher |
ASC 2005 - R - Theme session |
publishDate |
2024 |
url |
https://dx.doi.org/10.17895/ices.pub.25350535 https://ices-library.figshare.com/articles/conference_contribution/Evaluating_assumptions_underlying_a_line_transect_an_alysis_of_a_2004_Northwest_Atlantic_shipboard_abundance_survey_for_cetaceans/25350535 |
genre |
Northwest Atlantic |
genre_facet |
Northwest Atlantic |
op_relation |
https://ices-library.figshare.com/ICES-ASC-2005/groups |
op_rights |
ICES Custom Licence https://www.ices.dk/Pages/library_policies.aspx |
op_doi |
https://doi.org/10.17895/ices.pub.25350535 |
_version_ |
1797589813195440128 |