Using novel spatial mark–resight techniques to monitor resident Canada geese in a suburban environment
Context. Over the past two decades, an increase in the number of resident (non-migratory) Canada geese (Branta canadensis) in the United States has heightened the awareness of human–goose interactions. Aims. Accordingly, baseline demographic estimates for goose populations are needed to help better...
Main Authors: | , , , , |
---|---|
Format: | Text |
Language: | unknown |
Published: |
DigitalCommons@University of Nebraska - Lincoln
2014
|
Subjects: | |
Online Access: | https://digitalcommons.unl.edu/icwdm_usdanwrc/1664 https://digitalcommons.unl.edu/context/icwdm_usdanwrc/article/2667/viewcontent/Rutledge_WR_2014_Using_novel_spatial_mark.pdf |
id |
ftunivnebraskali:oai:digitalcommons.unl.edu:icwdm_usdanwrc-2667 |
---|---|
record_format |
openpolar |
spelling |
ftunivnebraskali:oai:digitalcommons.unl.edu:icwdm_usdanwrc-2667 2023-11-12T04:15:26+01:00 Using novel spatial mark–resight techniques to monitor resident Canada geese in a suburban environment Rutledge, M. Elizabeth Sollmann, Rachel Washburn, Brian E. Moorman, Christopher E. DePerno, Christopher S. 2014-01-01T08:00:00Z application/pdf https://digitalcommons.unl.edu/icwdm_usdanwrc/1664 https://digitalcommons.unl.edu/context/icwdm_usdanwrc/article/2667/viewcontent/Rutledge_WR_2014_Using_novel_spatial_mark.pdf unknown DigitalCommons@University of Nebraska - Lincoln https://digitalcommons.unl.edu/icwdm_usdanwrc/1664 https://digitalcommons.unl.edu/context/icwdm_usdanwrc/article/2667/viewcontent/Rutledge_WR_2014_Using_novel_spatial_mark.pdf USDA Wildlife Services - Staff Publications Branta canadensis density estimation goose movements home range survival urbanisation Life Sciences text 2014 ftunivnebraskali 2023-10-30T11:18:49Z Context. Over the past two decades, an increase in the number of resident (non-migratory) Canada geese (Branta canadensis) in the United States has heightened the awareness of human–goose interactions. Aims. Accordingly, baseline demographic estimates for goose populations are needed to help better understand the ecology of Canada geese in suburban areas. Methods. As a basis for monitoring efforts, we estimated densities of adult resident Canada geese in a suburban environment by using a novel spatial mark–resight method. We resighted 763 neck- and leg-banded resident Canada geese two to three times per week in and around Greensboro, North Carolina, over an 18-month period (June 2008 – December 2009).We estimated the density, detection probabilities, proportion of male geese in the population, and the movements and home-range radii of the geese by season ((post-molt I 2008 (16 July – 31 October), post-molt II 2008/2009 (1 November – 31 January), breeding and nesting 2009 (1 February – 31 May), and post-molt I 2009). Additionally, we used estimates of the number of marked individuals to quantify apparent monthly survival. Key results. Goose densities varied by season, ranging from 11.10 individuals per km2 (s.e. = 0.23) in breeding/nesting to 16.02 individuals per km2 (s.e. = 0.34) in post-molt II. The 95% bivariate normal home-range radii ranged from 2.60 to 3.86 kmfor males and from 1.90 to 3.15 kmfor females and female home ranges were smaller than those of male geese during the breeding/nesting and post-molt II seasons. Apparent monthly survival across the study was high, ranging from 0.972 (s.e. = 0.005) to 0.995 (s.e. = 0.002). Conclusions. By using spatial mark–resight models, we determined that Canada goose density estimates varied seasonally. Nevertheless, the seasonal changes in density are reflective of the seasonal changes in behaviour and physiological requirements of geese. Implications. Although defining the state–space of spatial mark–resight models requires careful consideration, the technique ... Text Branta canadensis Canada Goose University of Nebraska-Lincoln: DigitalCommons@UNL Canada |
institution |
Open Polar |
collection |
University of Nebraska-Lincoln: DigitalCommons@UNL |
op_collection_id |
ftunivnebraskali |
language |
unknown |
topic |
Branta canadensis density estimation goose movements home range survival urbanisation Life Sciences |
spellingShingle |
Branta canadensis density estimation goose movements home range survival urbanisation Life Sciences Rutledge, M. Elizabeth Sollmann, Rachel Washburn, Brian E. Moorman, Christopher E. DePerno, Christopher S. Using novel spatial mark–resight techniques to monitor resident Canada geese in a suburban environment |
topic_facet |
Branta canadensis density estimation goose movements home range survival urbanisation Life Sciences |
description |
Context. Over the past two decades, an increase in the number of resident (non-migratory) Canada geese (Branta canadensis) in the United States has heightened the awareness of human–goose interactions. Aims. Accordingly, baseline demographic estimates for goose populations are needed to help better understand the ecology of Canada geese in suburban areas. Methods. As a basis for monitoring efforts, we estimated densities of adult resident Canada geese in a suburban environment by using a novel spatial mark–resight method. We resighted 763 neck- and leg-banded resident Canada geese two to three times per week in and around Greensboro, North Carolina, over an 18-month period (June 2008 – December 2009).We estimated the density, detection probabilities, proportion of male geese in the population, and the movements and home-range radii of the geese by season ((post-molt I 2008 (16 July – 31 October), post-molt II 2008/2009 (1 November – 31 January), breeding and nesting 2009 (1 February – 31 May), and post-molt I 2009). Additionally, we used estimates of the number of marked individuals to quantify apparent monthly survival. Key results. Goose densities varied by season, ranging from 11.10 individuals per km2 (s.e. = 0.23) in breeding/nesting to 16.02 individuals per km2 (s.e. = 0.34) in post-molt II. The 95% bivariate normal home-range radii ranged from 2.60 to 3.86 kmfor males and from 1.90 to 3.15 kmfor females and female home ranges were smaller than those of male geese during the breeding/nesting and post-molt II seasons. Apparent monthly survival across the study was high, ranging from 0.972 (s.e. = 0.005) to 0.995 (s.e. = 0.002). Conclusions. By using spatial mark–resight models, we determined that Canada goose density estimates varied seasonally. Nevertheless, the seasonal changes in density are reflective of the seasonal changes in behaviour and physiological requirements of geese. Implications. Although defining the state–space of spatial mark–resight models requires careful consideration, the technique ... |
format |
Text |
author |
Rutledge, M. Elizabeth Sollmann, Rachel Washburn, Brian E. Moorman, Christopher E. DePerno, Christopher S. |
author_facet |
Rutledge, M. Elizabeth Sollmann, Rachel Washburn, Brian E. Moorman, Christopher E. DePerno, Christopher S. |
author_sort |
Rutledge, M. Elizabeth |
title |
Using novel spatial mark–resight techniques to monitor resident Canada geese in a suburban environment |
title_short |
Using novel spatial mark–resight techniques to monitor resident Canada geese in a suburban environment |
title_full |
Using novel spatial mark–resight techniques to monitor resident Canada geese in a suburban environment |
title_fullStr |
Using novel spatial mark–resight techniques to monitor resident Canada geese in a suburban environment |
title_full_unstemmed |
Using novel spatial mark–resight techniques to monitor resident Canada geese in a suburban environment |
title_sort |
using novel spatial mark–resight techniques to monitor resident canada geese in a suburban environment |
publisher |
DigitalCommons@University of Nebraska - Lincoln |
publishDate |
2014 |
url |
https://digitalcommons.unl.edu/icwdm_usdanwrc/1664 https://digitalcommons.unl.edu/context/icwdm_usdanwrc/article/2667/viewcontent/Rutledge_WR_2014_Using_novel_spatial_mark.pdf |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Branta canadensis Canada Goose |
genre_facet |
Branta canadensis Canada Goose |
op_source |
USDA Wildlife Services - Staff Publications |
op_relation |
https://digitalcommons.unl.edu/icwdm_usdanwrc/1664 https://digitalcommons.unl.edu/context/icwdm_usdanwrc/article/2667/viewcontent/Rutledge_WR_2014_Using_novel_spatial_mark.pdf |
_version_ |
1782332727644651520 |