Meeting Summary
reviewed horseshoe crab surveys. Usually, the DBETC also reviews shorebird surveys; however, the committee was not able to do so this year due to extenuating circumstances. Below is a summary of their discussions. Calculation of Red Knot Threshold and ARM Harvest Output Since the implementation of A...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.393.8983 2023-05-15T18:06:11+02:00 Meeting Summary The Pennsylvania State University CiteSeerX Archives 2013 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.393.8983 http://www.asmfc.org/uploads/file/DBETCMeetingSummary_Sept2013.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.393.8983 http://www.asmfc.org/uploads/file/DBETCMeetingSummary_Sept2013.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.asmfc.org/uploads/file/DBETCMeetingSummary_Sept2013.pdf text 2013 ftciteseerx 2016-01-08T02:23:01Z reviewed horseshoe crab surveys. Usually, the DBETC also reviews shorebird surveys; however, the committee was not able to do so this year due to extenuating circumstances. Below is a summary of their discussions. Calculation of Red Knot Threshold and ARM Harvest Output Since the implementation of Addendum VII in 2012, the red knot threshold which is used in the ARM model has been 45,000 birds. This threshold was based upon aerial peak counts and ground counts when aerial counts were not able to meet objectives (such as bad weather) preventing them. However, it was recognized that peak counts do not capture the full population because they cannot take turnover into account. In 2011, new monitoring of the marked to unmarked ratio was implemented to address this issue. For 2014, the ARM Working Group (ARM WG) felt that there was enough data to begin using this mark-resight estimate. The ARM WG presented their recommendation for moving from ground and aerial counts to markunmarked ratio estimates of red knots, which involves adjusting the threshold to account for differences in the different methodologies. The DBETC discussed the best way to adjust the red knot threshold proportionately and decided to accept the recommendations of the WG, based Text Red Knot Unknown |
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reviewed horseshoe crab surveys. Usually, the DBETC also reviews shorebird surveys; however, the committee was not able to do so this year due to extenuating circumstances. Below is a summary of their discussions. Calculation of Red Knot Threshold and ARM Harvest Output Since the implementation of Addendum VII in 2012, the red knot threshold which is used in the ARM model has been 45,000 birds. This threshold was based upon aerial peak counts and ground counts when aerial counts were not able to meet objectives (such as bad weather) preventing them. However, it was recognized that peak counts do not capture the full population because they cannot take turnover into account. In 2011, new monitoring of the marked to unmarked ratio was implemented to address this issue. For 2014, the ARM Working Group (ARM WG) felt that there was enough data to begin using this mark-resight estimate. The ARM WG presented their recommendation for moving from ground and aerial counts to markunmarked ratio estimates of red knots, which involves adjusting the threshold to account for differences in the different methodologies. The DBETC discussed the best way to adjust the red knot threshold proportionately and decided to accept the recommendations of the WG, based |
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The Pennsylvania State University CiteSeerX Archives |
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Meeting Summary |
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2013 |
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http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.393.8983 http://www.asmfc.org/uploads/file/DBETCMeetingSummary_Sept2013.pdf |
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Red Knot |
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Red Knot |
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http://www.asmfc.org/uploads/file/DBETCMeetingSummary_Sept2013.pdf |
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http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.393.8983 http://www.asmfc.org/uploads/file/DBETCMeetingSummary_Sept2013.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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