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...

Full description

Bibliographic Details
Main Authors: Bree Walpole, Erica Nol, Vicky Johnston
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Published: 2007
Subjects:
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.576.6794
http://pubs.aina.ucalgary.ca/arctic/arctic61-4-426.pdf
id ftciteseerx:oai:CiteSeerX.psu:10.1.1.576.6794
record_format openpolar
spelling 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.
_version_ 1766291448111562752