Data from: Effects of distance on detectability of Arctic waterfowl using double-observer sampling during helicopter surveys ...
Aerial survey is an important, widely employed approach for estimating free‐ranging wildlife over large or inaccessible study areas. We studied how a distance covariate influenced probability of double‐observer detections for birds counted during a helicopter survey in Canada’s central Arctic. Two o...
Main Authors: | , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
Dryad
2019
|
Subjects: | |
Online Access: | https://dx.doi.org/10.5061/dryad.mp7h92r https://datadryad.org/stash/dataset/doi:10.5061/dryad.mp7h92r |
id |
ftdatacite:10.5061/dryad.mp7h92r |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.5061/dryad.mp7h92r 2024-02-04T09:52:50+01:00 Data from: Effects of distance on detectability of Arctic waterfowl using double-observer sampling during helicopter surveys ... Alisauskas, Ray T Conn, Paul B 2019 https://dx.doi.org/10.5061/dryad.mp7h92r https://datadryad.org/stash/dataset/doi:10.5061/dryad.mp7h92r en eng Dryad https://dx.doi.org/10.1002/ece3.4824 Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 Anser albifrons Cygnus columbianus Gavia spp. Grus canadensis population estimation Branta hutchinsii Clangula hyemalis distance-sampling Somateria spectabilis Anas acuta detection probability Lagopus spp. Aerial survey Dataset dataset 2019 ftdatacite https://doi.org/10.5061/dryad.mp7h92r10.1002/ece3.4824 2024-01-05T01:14:15Z Aerial survey is an important, widely employed approach for estimating free‐ranging wildlife over large or inaccessible study areas. We studied how a distance covariate influenced probability of double‐observer detections for birds counted during a helicopter survey in Canada’s central Arctic. Two observers, one behind the other but visually obscured from each other, counted birds in an incompletely shared field of view to a distance of 200 m. Each observer assigned detections to one of five 40‐m distance bins, guided by semi‐transparent marks on aircraft windows. Detections were recorded with distance bin, taxonomic group, wing‐flapping behavior, and group size. We compared two general model‐based estimation approaches pertinent to sampling wildlife under such situations. One was based on double‐observer methods without distance information, that provide sampling analogous to that required for mark–recapture (MR) estimation of detection probability, urn:x-wiley:20457758:media:ece34824:ece34824-math-0001, ... : QMG 2014 Detections Distance Double-observerContains information about each animal group either observer from a helicopter in flight: Species code, 'capture' history, count, whether group was flying or not, distance bin of detection by front observer, distance bin of detection by back observeranalyze_waterfowl_mrds_FINALR-code for analyzing detections of Arctic waterfowl using double-observer sampling during helicopter surveys ... Dataset Anas acuta Arctic Cygnus columbianus Somateria spectabilis DataCite Metadata Store (German National Library of Science and Technology) Arctic |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Anser albifrons Cygnus columbianus Gavia spp. Grus canadensis population estimation Branta hutchinsii Clangula hyemalis distance-sampling Somateria spectabilis Anas acuta detection probability Lagopus spp. Aerial survey |
spellingShingle |
Anser albifrons Cygnus columbianus Gavia spp. Grus canadensis population estimation Branta hutchinsii Clangula hyemalis distance-sampling Somateria spectabilis Anas acuta detection probability Lagopus spp. Aerial survey Alisauskas, Ray T Conn, Paul B Data from: Effects of distance on detectability of Arctic waterfowl using double-observer sampling during helicopter surveys ... |
topic_facet |
Anser albifrons Cygnus columbianus Gavia spp. Grus canadensis population estimation Branta hutchinsii Clangula hyemalis distance-sampling Somateria spectabilis Anas acuta detection probability Lagopus spp. Aerial survey |
description |
Aerial survey is an important, widely employed approach for estimating free‐ranging wildlife over large or inaccessible study areas. We studied how a distance covariate influenced probability of double‐observer detections for birds counted during a helicopter survey in Canada’s central Arctic. Two observers, one behind the other but visually obscured from each other, counted birds in an incompletely shared field of view to a distance of 200 m. Each observer assigned detections to one of five 40‐m distance bins, guided by semi‐transparent marks on aircraft windows. Detections were recorded with distance bin, taxonomic group, wing‐flapping behavior, and group size. We compared two general model‐based estimation approaches pertinent to sampling wildlife under such situations. One was based on double‐observer methods without distance information, that provide sampling analogous to that required for mark–recapture (MR) estimation of detection probability, urn:x-wiley:20457758:media:ece34824:ece34824-math-0001, ... : QMG 2014 Detections Distance Double-observerContains information about each animal group either observer from a helicopter in flight: Species code, 'capture' history, count, whether group was flying or not, distance bin of detection by front observer, distance bin of detection by back observeranalyze_waterfowl_mrds_FINALR-code for analyzing detections of Arctic waterfowl using double-observer sampling during helicopter surveys ... |
format |
Dataset |
author |
Alisauskas, Ray T Conn, Paul B |
author_facet |
Alisauskas, Ray T Conn, Paul B |
author_sort |
Alisauskas, Ray T |
title |
Data from: Effects of distance on detectability of Arctic waterfowl using double-observer sampling during helicopter surveys ... |
title_short |
Data from: Effects of distance on detectability of Arctic waterfowl using double-observer sampling during helicopter surveys ... |
title_full |
Data from: Effects of distance on detectability of Arctic waterfowl using double-observer sampling during helicopter surveys ... |
title_fullStr |
Data from: Effects of distance on detectability of Arctic waterfowl using double-observer sampling during helicopter surveys ... |
title_full_unstemmed |
Data from: Effects of distance on detectability of Arctic waterfowl using double-observer sampling during helicopter surveys ... |
title_sort |
data from: effects of distance on detectability of arctic waterfowl using double-observer sampling during helicopter surveys ... |
publisher |
Dryad |
publishDate |
2019 |
url |
https://dx.doi.org/10.5061/dryad.mp7h92r https://datadryad.org/stash/dataset/doi:10.5061/dryad.mp7h92r |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Anas acuta Arctic Cygnus columbianus Somateria spectabilis |
genre_facet |
Anas acuta Arctic Cygnus columbianus Somateria spectabilis |
op_relation |
https://dx.doi.org/10.1002/ece3.4824 |
op_rights |
Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 |
op_doi |
https://doi.org/10.5061/dryad.mp7h92r10.1002/ece3.4824 |
_version_ |
1789961207378083840 |