The distribution and reproductive success of the western snowy plover along the Oregon coast - 2009 Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/rr1722003

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • From 3 April – 23 September 2009 we monitored the distribution, abundance and productivity of the federally Threatened Western Snowy Plover (Charadrius alexandrinus nivosus) along the Oregon coast. From north to south, we surveyed and monitored plover activity at Sutton Beach, Siltcoos River estuary, the Dunes Overlook, North Tahkenitch Creek, Tenmile Creek, Coos Bay North Spit, Bandon Beach, New River, and Floras Lake. Our objectives for the Oregon coastal population in 2009 were to: 1) estimate the size of the adult Snowy Plover population, 2) locate plover nests, 3) continue selective use of mini-exclosures (MEs) to protect nests from predators and evaluate whether exclosure use can be reduced, 4) determine nest success, 5) determine fledgling success, 6) monitor brood movements, 7) collect general observational data about predators, and 8) evaluate the effectiveness of predator management. We observed an estimated 199-206 adult Snowy Plovers; a minimum of 149-150 individuals was known to have nested. The adult plover population was the highest estimate recorded since monitoring began in 1990, and we found 236 nests in 2009. Overall Mayfield nest success was 23%. Exclosed nests (n = 34) had a 76% success rate, and unexclosed nests (n = 202) had a 25% success rate. Nest failures were attributed to unknown depredation (29%), rodent depredation (21%), unknown cause (17%), oneegg nests (12%), corvid depredation (8%), abandonment (7%), wave overwash (2%), infertility (1%), wind (1%), canine depredation (1%), and raccoon depredation (1%). We monitored 88 broods, including eight from unknown nests, and documented a minimum of 106 fledglings. Overall brood success was 73%, fledgling success was 50%, and 1.33 fledglings per male were produced. Continued predator management, habitat improvement and maintenance, and management of recreational activities at all sites are recommended to achieve recovery goals.
Resource Type
Date Available
Date Issued
Non-Academic Affiliation
Keyword
Rights Statement
Publisher
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Linda Kathman(linda.kathman@oregonstate.edu) on 2010-02-09T21:00:06Z (GMT) No. of bitstreams: 1 The Distribution and Reproductive Success of the Western Snowy Plover along the Oregon Coast - 2009.pdf: 2669551 bytes, checksum: fb26c9ee3c7ab6c2cea7a7b35bda2f71 (MD5)
  • description.provenance : Submitted by Amy Ewing (ewinga@onid.orst.edu) on 2010-02-09T02:29:13Z No. of bitstreams: 1 The Distribution and Reproductive Success of the Western Snowy Plover along the Oregon Coast - 2009.pdf: 2669551 bytes, checksum: fb26c9ee3c7ab6c2cea7a7b35bda2f71 (MD5)
  • description.provenance : Made available in DSpace on 2010-02-09T21:00:06Z (GMT). No. of bitstreams: 1 The Distribution and Reproductive Success of the Western Snowy Plover along the Oregon Coast - 2009.pdf: 2669551 bytes, checksum: fb26c9ee3c7ab6c2cea7a7b35bda2f71 (MD5) Previous issue date: 2009-12-30

Relationships

In Administrative Set:
Last modified: 09/22/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items