The effects of sampling regime on the analysis of movements of over- wintering female caribou in east-central Alaska
Abstract: Global Positioning System (GPS) technology enables research of animal movements at finer levels of spatial and temporal resolution than previous methodologies allowed. A feature of GPS collar technology is the capability to program the dates of (sample period) and time between successive r...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.616.8436 2023-05-15T15:53:29+02:00 The effects of sampling regime on the analysis of movements of over- wintering female caribou in east-central Alaska Kyle Joly The Pennsylvania State University CiteSeerX Archives http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.616.8436 http://septentrio.uit.no/index.php/rangifer/article/viewFile/254/241/ en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.616.8436 http://septentrio.uit.no/index.php/rangifer/article/viewFile/254/241/ Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://septentrio.uit.no/index.php/rangifer/article/viewFile/254/241/ Key words Alaska GPS home range movement rates Nelchina Rangifer tarandus granti text ftciteseerx 2016-01-08T14:47:04Z Abstract: Global Positioning System (GPS) technology enables research of animal movements at finer levels of spatial and temporal resolution than previous methodologies allowed. A feature of GPS collar technology is the capability to program the dates of (sample period) and time between successive relocations (sample interval). I investigated the ef-fects of sampling regime, the combination of sample period and interval, on analyzing movements of female caribou (Rangifer tarandus granti) in the Fortymile Caribou Herd as a case study. Based on hourly relocations throughout the win-ter, caribou moved 260 meters per hour or 6.2 kilometers per day. Sample period influenced estimates of movement rates, as I detected both diurnal and seasonal variability. Caribou movement rates during daylight and twilight hours were significantly greater than during the nighttime. Movement rates were greater during twilight hours than during daylight, but only slightly. Mid-winter and late winter movement rates were virtually the same, however, both were significantly less than during early winter. As sample interval increased, estimates of movement rates decreased sub-stantially. Estimates based on 2-hour sample intervals were 14 % less than those based on one-hour sample intervals, with estimates declining to 65 % of the one-hour sample interval estimates at 167-hour (weekly) intervals. Estimates of home range were also affected by using different sampling intervals, however, kernel and MCP estimates responded antithetically to increasing sample interval. Researchers need to be aware that decisions about sampling regime can affect the estimates of ecological parameters that are based on relocations, such as movement rate, habitat selection, and home range. Text caribou Rangifer Rangifer tarandus Alaska Unknown |
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Key words Alaska GPS home range movement rates Nelchina Rangifer tarandus granti |
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Key words Alaska GPS home range movement rates Nelchina Rangifer tarandus granti Kyle Joly The effects of sampling regime on the analysis of movements of over- wintering female caribou in east-central Alaska |
topic_facet |
Key words Alaska GPS home range movement rates Nelchina Rangifer tarandus granti |
description |
Abstract: Global Positioning System (GPS) technology enables research of animal movements at finer levels of spatial and temporal resolution than previous methodologies allowed. A feature of GPS collar technology is the capability to program the dates of (sample period) and time between successive relocations (sample interval). I investigated the ef-fects of sampling regime, the combination of sample period and interval, on analyzing movements of female caribou (Rangifer tarandus granti) in the Fortymile Caribou Herd as a case study. Based on hourly relocations throughout the win-ter, caribou moved 260 meters per hour or 6.2 kilometers per day. Sample period influenced estimates of movement rates, as I detected both diurnal and seasonal variability. Caribou movement rates during daylight and twilight hours were significantly greater than during the nighttime. Movement rates were greater during twilight hours than during daylight, but only slightly. Mid-winter and late winter movement rates were virtually the same, however, both were significantly less than during early winter. As sample interval increased, estimates of movement rates decreased sub-stantially. Estimates based on 2-hour sample intervals were 14 % less than those based on one-hour sample intervals, with estimates declining to 65 % of the one-hour sample interval estimates at 167-hour (weekly) intervals. Estimates of home range were also affected by using different sampling intervals, however, kernel and MCP estimates responded antithetically to increasing sample interval. Researchers need to be aware that decisions about sampling regime can affect the estimates of ecological parameters that are based on relocations, such as movement rate, habitat selection, and home range. |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Kyle Joly |
author_facet |
Kyle Joly |
author_sort |
Kyle Joly |
title |
The effects of sampling regime on the analysis of movements of over- wintering female caribou in east-central Alaska |
title_short |
The effects of sampling regime on the analysis of movements of over- wintering female caribou in east-central Alaska |
title_full |
The effects of sampling regime on the analysis of movements of over- wintering female caribou in east-central Alaska |
title_fullStr |
The effects of sampling regime on the analysis of movements of over- wintering female caribou in east-central Alaska |
title_full_unstemmed |
The effects of sampling regime on the analysis of movements of over- wintering female caribou in east-central Alaska |
title_sort |
effects of sampling regime on the analysis of movements of over- wintering female caribou in east-central alaska |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.616.8436 http://septentrio.uit.no/index.php/rangifer/article/viewFile/254/241/ |
genre |
caribou Rangifer Rangifer tarandus Alaska |
genre_facet |
caribou Rangifer Rangifer tarandus Alaska |
op_source |
http://septentrio.uit.no/index.php/rangifer/article/viewFile/254/241/ |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.616.8436 http://septentrio.uit.no/index.php/rangifer/article/viewFile/254/241/ |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766388601546866688 |