Pond Characteristics and Occupancy by Red-Necked Phalaropes in the Mackenzie Delta
ABSTRACT. Red-necked phalaropes (Phalaropus lobatus) breed in Arctic and Subarctic lowlands throughout the circumpolar region. They are highly reliant on shallow freshwater ponds for social interaction, copulation, and foraging for small aquatic invertebrates. Threats related to warmer continental t...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.576.6794 2023-05-15T14:19:41+02:00 Pond Characteristics and Occupancy by Red-Necked Phalaropes in the Mackenzie Delta Bree Walpole Erica Nol Vicky Johnston The Pennsylvania State University CiteSeerX Archives 2007 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.576.6794 http://pubs.aina.ucalgary.ca/arctic/arctic61-4-426.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.576.6794 http://pubs.aina.ucalgary.ca/arctic/arctic61-4-426.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://pubs.aina.ucalgary.ca/arctic/arctic61-4-426.pdf Key words shorebird red-necked phalarope Phalaropus lobatus Arctic Subarctic Mackenzie Delta habitat use ponds text 2007 ftciteseerx 2016-01-08T12:47:15Z ABSTRACT. Red-necked phalaropes (Phalaropus lobatus) breed in Arctic and Subarctic lowlands throughout the circumpolar region. They are highly reliant on shallow freshwater ponds for social interaction, copulation, and foraging for small aquatic invertebrates. Threats related to warmer continental temperatures could lead to encroachment of shrub vegetation and premature drying of wetlands that serve as breeding habitat. We documented patterns of pond use over the breeding season and investigated pond characteristics associated with high occupancy by red-necked phalaropes. Research was conducted during two breeding seasons in a large wetland on Niglintgak Island, located in the mouth of the Mackenzie Delta, Northwest Territories. The frequency of pond occupancy declined between the onset of incubation and average hatch dates. Neither invertebrate assemblages (potential prey) nor physical characteristics (water chemistry and vegetation characteristics) varied significantly between ponds categorized as high-use, low-use, and no-use, in either year. Dry weight of potential prey (g/m3) was higher during the incubation period than during the nest initiation period. Pond occupancy both prior to and during incubation showed a clumped distribution, suggesting that choice of ponds was related in part to social stimulation. Future studies should examine the proximity of ponds to nest sites, the effects of premature drying of ponds on food availability, the distribution of resources surrounding ponds, and the occupancy of ponds by broods during the period preceding fall migration. Text Arctic Arctic Mackenzie Delta Northwest Territories Phalaropus lobatus Red-necked Phalarope Subarctic Unknown Arctic Mackenzie Delta ENVELOPE(-136.672,-136.672,68.833,68.833) Niglintgak Island ENVELOPE(-135.339,-135.339,69.350,69.350) Northwest Territories |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
Key words shorebird red-necked phalarope Phalaropus lobatus Arctic Subarctic Mackenzie Delta habitat use ponds |
spellingShingle |
Key words shorebird red-necked phalarope Phalaropus lobatus Arctic Subarctic Mackenzie Delta habitat use ponds Bree Walpole Erica Nol Vicky Johnston Pond Characteristics and Occupancy by Red-Necked Phalaropes in the Mackenzie Delta |
topic_facet |
Key words shorebird red-necked phalarope Phalaropus lobatus Arctic Subarctic Mackenzie Delta habitat use ponds |
description |
ABSTRACT. Red-necked phalaropes (Phalaropus lobatus) breed in Arctic and Subarctic lowlands throughout the circumpolar region. They are highly reliant on shallow freshwater ponds for social interaction, copulation, and foraging for small aquatic invertebrates. Threats related to warmer continental temperatures could lead to encroachment of shrub vegetation and premature drying of wetlands that serve as breeding habitat. We documented patterns of pond use over the breeding season and investigated pond characteristics associated with high occupancy by red-necked phalaropes. Research was conducted during two breeding seasons in a large wetland on Niglintgak Island, located in the mouth of the Mackenzie Delta, Northwest Territories. The frequency of pond occupancy declined between the onset of incubation and average hatch dates. Neither invertebrate assemblages (potential prey) nor physical characteristics (water chemistry and vegetation characteristics) varied significantly between ponds categorized as high-use, low-use, and no-use, in either year. Dry weight of potential prey (g/m3) was higher during the incubation period than during the nest initiation period. Pond occupancy both prior to and during incubation showed a clumped distribution, suggesting that choice of ponds was related in part to social stimulation. Future studies should examine the proximity of ponds to nest sites, the effects of premature drying of ponds on food availability, the distribution of resources surrounding ponds, and the occupancy of ponds by broods during the period preceding fall migration. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Bree Walpole Erica Nol Vicky Johnston |
author_facet |
Bree Walpole Erica Nol Vicky Johnston |
author_sort |
Bree Walpole |
title |
Pond Characteristics and Occupancy by Red-Necked Phalaropes in the Mackenzie Delta |
title_short |
Pond Characteristics and Occupancy by Red-Necked Phalaropes in the Mackenzie Delta |
title_full |
Pond Characteristics and Occupancy by Red-Necked Phalaropes in the Mackenzie Delta |
title_fullStr |
Pond Characteristics and Occupancy by Red-Necked Phalaropes in the Mackenzie Delta |
title_full_unstemmed |
Pond Characteristics and Occupancy by Red-Necked Phalaropes in the Mackenzie Delta |
title_sort |
pond characteristics and occupancy by red-necked phalaropes in the mackenzie delta |
publishDate |
2007 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.576.6794 http://pubs.aina.ucalgary.ca/arctic/arctic61-4-426.pdf |
long_lat |
ENVELOPE(-136.672,-136.672,68.833,68.833) ENVELOPE(-135.339,-135.339,69.350,69.350) |
geographic |
Arctic Mackenzie Delta Niglintgak Island Northwest Territories |
geographic_facet |
Arctic Mackenzie Delta Niglintgak Island Northwest Territories |
genre |
Arctic Arctic Mackenzie Delta Northwest Territories Phalaropus lobatus Red-necked Phalarope Subarctic |
genre_facet |
Arctic Arctic Mackenzie Delta Northwest Territories Phalaropus lobatus Red-necked Phalarope Subarctic |
op_source |
http://pubs.aina.ucalgary.ca/arctic/arctic61-4-426.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.576.6794 http://pubs.aina.ucalgary.ca/arctic/arctic61-4-426.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766291448111562752 |