Modelling Marten (Martes americana) Movement Costs in a Boreal Forest: Effects of Grain Size and Thematic Resolution
We investigated landscape resistance to movements of American marten (Martes americana) based on snow-tracking data. We generated movement cost maps of the study area with different grain size, thematic resolution, and habitat-specific resistance to movements. We compared simulated tracks obtained f...
Main Authors: | , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1079.7220 http://downloads.hindawi.com/journals/ijecol/2012/742913.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.1079.7220 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.1079.7220 2023-05-15T13:21:52+02:00 Modelling Marten (Martes americana) Movement Costs in a Boreal Forest: Effects of Grain Size and Thematic Resolution Ophélie Planckaert André Desrochers The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1079.7220 http://downloads.hindawi.com/journals/ijecol/2012/742913.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1079.7220 http://downloads.hindawi.com/journals/ijecol/2012/742913.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://downloads.hindawi.com/journals/ijecol/2012/742913.pdf text ftciteseerx 2020-05-03T00:20:51Z We investigated landscape resistance to movements of American marten (Martes americana) based on snow-tracking data. We generated movement cost maps of the study area with different grain size, thematic resolution, and habitat-specific resistance to movements. We compared simulated tracks obtained from resistance maps to real tracks plotted along transects that we surveyed in winters 2004 to 2008 at the Montmorency Forest, Quebec, Canada. Simulated tracks were located at the intersection between least-cost paths simulated across the study area and transects. We used nearest-neighbour distances between simulated and real tracks to assess the performance of resistance maps and estimate landscape resistance parameters. Simulations with specified costs to movement for open areas, young forest, and mature forest performed better than simpler resistance scenarios, suggesting that resistance to marten movements differed among those landscape attributes that were considered. Simulations with a map grain size of 100 m performed significantly better than 5, 25, and 300 m, possibly because of gap crossing avoidance. Model performance (compared to null model) was maximal when resistance to movement in open habitat was set to 20 times higher than in mature forest, but uncertainty around this estimate was large. This research demonstrates that presence-only (point) data can be used to parameterize movements using spatially explicit modelling. Text American marten Martes americana Unknown Canada |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
We investigated landscape resistance to movements of American marten (Martes americana) based on snow-tracking data. We generated movement cost maps of the study area with different grain size, thematic resolution, and habitat-specific resistance to movements. We compared simulated tracks obtained from resistance maps to real tracks plotted along transects that we surveyed in winters 2004 to 2008 at the Montmorency Forest, Quebec, Canada. Simulated tracks were located at the intersection between least-cost paths simulated across the study area and transects. We used nearest-neighbour distances between simulated and real tracks to assess the performance of resistance maps and estimate landscape resistance parameters. Simulations with specified costs to movement for open areas, young forest, and mature forest performed better than simpler resistance scenarios, suggesting that resistance to marten movements differed among those landscape attributes that were considered. Simulations with a map grain size of 100 m performed significantly better than 5, 25, and 300 m, possibly because of gap crossing avoidance. Model performance (compared to null model) was maximal when resistance to movement in open habitat was set to 20 times higher than in mature forest, but uncertainty around this estimate was large. This research demonstrates that presence-only (point) data can be used to parameterize movements using spatially explicit modelling. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Ophélie Planckaert André Desrochers |
spellingShingle |
Ophélie Planckaert André Desrochers Modelling Marten (Martes americana) Movement Costs in a Boreal Forest: Effects of Grain Size and Thematic Resolution |
author_facet |
Ophélie Planckaert André Desrochers |
author_sort |
Ophélie Planckaert |
title |
Modelling Marten (Martes americana) Movement Costs in a Boreal Forest: Effects of Grain Size and Thematic Resolution |
title_short |
Modelling Marten (Martes americana) Movement Costs in a Boreal Forest: Effects of Grain Size and Thematic Resolution |
title_full |
Modelling Marten (Martes americana) Movement Costs in a Boreal Forest: Effects of Grain Size and Thematic Resolution |
title_fullStr |
Modelling Marten (Martes americana) Movement Costs in a Boreal Forest: Effects of Grain Size and Thematic Resolution |
title_full_unstemmed |
Modelling Marten (Martes americana) Movement Costs in a Boreal Forest: Effects of Grain Size and Thematic Resolution |
title_sort |
modelling marten (martes americana) movement costs in a boreal forest: effects of grain size and thematic resolution |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1079.7220 http://downloads.hindawi.com/journals/ijecol/2012/742913.pdf |
geographic |
Canada |
geographic_facet |
Canada |
genre |
American marten Martes americana |
genre_facet |
American marten Martes americana |
op_source |
http://downloads.hindawi.com/journals/ijecol/2012/742913.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1079.7220 http://downloads.hindawi.com/journals/ijecol/2012/742913.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766361880166662144 |