Ashli Lewis https://www.southbayrestoration.org/ en Coordinated phalarope surveys at western North American staging sites, 2019-2020 https://www.southbayrestoration.org/document/coordinated-phalarope-surveys-western-north-american-staging-sites-2019-2020 <span class="field field--name-title field--type-string field--label-hidden">Coordinated phalarope surveys at western North American staging sites, 2019-2020</span> <span class="field field--name-uid field--type-entity-reference field--label-hidden"><span>ariela</span></span> <span class="field field--name-created field--type-created field--label-hidden">Sat, 10/16/2021 - 16:30</span> <div class="field field--name-field-document-category field--type-entity-reference field--label-above"> <div class="field__label">Document Category</div> <div class="field__items"> <div class="field__item">Scientific Reports</div> </div> </div> <div class="field field--name-field-author field--type-entity-reference field--label-above"> <div class="field__label">Author(s)</div> <div class="field__items"> <div class="field__item"><a href="/authors/ryan-carle" hreflang="en">Ryan Carle</a></div> <div class="field__item"><a href="/authors/gabbie-burns" hreflang="en">Gabbie Burns</a></div> <div class="field__item"><a href="/authors/sarah-hecocks" hreflang="en">Sarah Hecocks</a></div> <div class="field__item"><a href="/authors/deborah-house" hreflang="en">Deborah House</a></div> <div class="field__item"><a href="/authors/ron-larson" hreflang="en">Ron Larson</a></div> <div class="field__item"><a href="/authors/ashli-lewis" hreflang="en">Ashli Lewis</a></div> <div class="field__item"><a href="/authors/ann-e-mckellar" hreflang="en">Ann E. McKellar</a></div> <div class="field__item"><a href="/authors/john-neill" hreflang="en">John Neill</a></div> <div class="field__item"><a href="/authors/michael-prather" hreflang="en">Michael Prather</a></div> <div class="field__item"><a href="/authors/john-reuland" hreflang="en">John Reuland</a></div> <div class="field__item"><a href="/authors/margaret-rubega" hreflang="en">Margaret Rubega</a></div> <div class="field__item"><a href="/authors/max-tarjan" hreflang="en">Max Tarjan</a></div> </div> </div> <div class="field field--name-field-date-document field--type-string field--label-above"> <div class="field__label">Date</div> <div class="field__item">2021-03</div> </div> <div class="clearfix text-formatted field field--name-body field--type-text-with-summary field--label-above"> <div class="field__label">Summary</div> <div class="field__item"><p>Wilson’s and red-necked phalaropes (Phalaropus tricolor and P. lobatus, respectively), have<br /> poorly understood conservation statuses. These species breed in northerly latitudes of North<br /> America to migrate to staging areas at saline lakes in western North America, before migrating to<br /> South American lands and waters. Given saline lake habitat is threatened worldwide by water<br /> diversion and climate change, there is an urgent need to better understand phalarope population<br /> and trends. We conducted coordinated monitoring of western North American staging areas of<br /> historical importance to phalaropes: Great Salt Lake (Utah), Mono Lake (California), Lake Abert<br /> (Oregon), Owens Lake (California), south San Francisco Bay (California), and Chaplin Lake<br /> (Saskatchewan). We conducted surveys at each site during week-long “survey windows,” from<br /> mid-July to mid-September, 2019 and 2020, with the goal of at least one survey per site per<br /> window. Methods were standardized within sites but varied across sites, including plane-based,<br /> boat-based, and land-based surveys. We report results from Great Salt Lake, Mono Lake, and<br /> Lake Abert in 2019 and for all surveyed sites in 2020. The peak Wilson’s phalarope count from<br /> all sites combined was 339,715 birds in 2019 (3 sites), and 126,288 birds in 2020 (6 sites).<br /> Inclusion of unidentified birds in Wilson’s phalarope peak counts resulted in high counts of<br /> 370,811 birds in 2019 and 236,434 birds in 2020. The peak red-necked phalarope count from all<br /> sites combined was 154,581 birds during 2019 (3 sites), and 53,762 in 2020 (6 sites). Inclusion<br /> of unidentified birds in red-necked phalarope peak counts resulted in high counts of 291,643<br /> birds in 2019 and 123,697 birds in 2020. The three additional sites monitored in 2020 added ≤1%<br /> of the combined totals for each species/unidentified peak count. Timing of both species was<br /> similar to historic patterns, with peak numbers in mid-July for Wilson’s phalaropes and in midto<br /> late-August for red-necked phalaropes. Numbers of both species at Great Salt Lake<br /> outnumbered those at other sites by an order of magnitude in 2019 and 2020. There is a need for<br /> continuing standardization of survey methods across sites, research on phalarope movements<br /> among sites and residence times at sites, and attention toward the issue of interpretation of<br /> unidentified phalarope counts. Continued monitoring will help us understand phalarope<br /> population trends, migratory patterns and timing, and response to climate and environmental<br /> factors, and will provide a valuable indicator of the health of saline lake ecosystems.</p> </div> </div> <div class="field field--name-field-keywords field--type-entity-reference field--label-above"> <div class="field__label">Keywords</div> <div class="field__items"> <div class="field__item"><a href="/keywords/birds" hreflang="en">birds</a></div> <div class="field__item"><a href="/keywords/waterbirds" hreflang="en">waterbirds</a></div> <div class="field__item"><a href="/keywords/population" hreflang="en">population</a></div> </div> </div> <div class="field field--name-field-pond-complex field--type-entity-reference field--label-above"> <div class="field__label">Pond Complex</div> <div class="field__items"> <div class="field__item"><div id="taxonomy-term-53" class="taxonomy-term vocabulary-pond-complex"> <h2><a href="/taxonomy/term/53"> <div class="field field--name-name field--type-string field--label-hidden field__item"><a href="/taxonomy/term/53" hreflang="en">Alviso</a></div> </a></h2> <div class="content"> <div class="layout layout--twocol-section layout--twocol-section--25-75"> <div class="layout__region layout__region--first"> <div class="block block-layout-builder block-field-blocktaxonomy-termpond-complexfield-pond-complex-image"> <div class="field field--name-field-pond-complex-image field--type-image field--label-hidden field__items"> <div class="field__item"> <a href="/taxonomy/term/53" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail_50x50_/public/2019-05/alviso.png?itok=5e5_rG_l" width="50" height="50" alt="Alviso Map" class="image-style-thumbnail-50x50-" /> </a> </div> </div> </div> </div> <div class="layout__region layout__region--second"> <div class="block block-layout-builder block-field-blocktaxonomy-termpond-complexname"> <div class="field field--name-name field--type-string field--label-hidden field__item"><a href="/taxonomy/term/53" hreflang="en">Alviso</a></div> </div> </div> </div> </div> </div> </div> <div class="field__item"><div id="taxonomy-term-55" class="taxonomy-term vocabulary-pond-complex"> <h2><a href="/taxonomy/term/55"> <div class="field field--name-name field--type-string field--label-hidden field__item"><a href="/taxonomy/term/55" hreflang="en">Eden Landing</a></div> </a></h2> <div class="content"> <div class="layout layout--twocol-section layout--twocol-section--25-75"> <div class="layout__region layout__region--first"> <div class="block block-layout-builder block-field-blocktaxonomy-termpond-complexfield-pond-complex-image"> <div class="field field--name-field-pond-complex-image field--type-image field--label-hidden field__items"> <div class="field__item"> <a href="/taxonomy/term/55" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail_50x50_/public/2019-05/EdenLandingMaps.png?itok=Ul4jIguL" width="50" height="50" alt="Eden Landing Map" class="image-style-thumbnail-50x50-" /> </a> </div> </div> </div> </div> <div class="layout__region layout__region--second"> <div class="block block-layout-builder block-field-blocktaxonomy-termpond-complexname"> <div class="field field--name-name field--type-string field--label-hidden field__item"><a href="/taxonomy/term/55" hreflang="en">Eden Landing</a></div> </div> </div> </div> </div> </div> </div> <div class="field__item"><div id="taxonomy-term-54" class="taxonomy-term vocabulary-pond-complex"> <h2><a href="/taxonomy/term/54"> <div class="field field--name-name field--type-string field--label-hidden field__item"><a href="/taxonomy/term/54" hreflang="en">Ravenswood</a></div> </a></h2> <div class="content"> <div class="layout layout--twocol-section layout--twocol-section--25-75"> <div class="layout__region layout__region--first"> <div class="block block-layout-builder block-field-blocktaxonomy-termpond-complexfield-pond-complex-image"> <div class="field field--name-field-pond-complex-image field--type-image field--label-hidden field__items"> <div class="field__item"> <a href="/taxonomy/term/54" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail_50x50_/public/2019-05/ravenswood.png?itok=FYrqWj3J" width="50" height="50" alt="Ravenswood map" class="image-style-thumbnail-50x50-" /> </a> </div> </div> </div> </div> <div class="layout__region layout__region--second"> <div class="block block-layout-builder block-field-blocktaxonomy-termpond-complexname"> <div class="field field--name-name field--type-string field--label-hidden field__item"><a href="/taxonomy/term/54" hreflang="en">Ravenswood</a></div> </div> </div> </div> </div> </div> </div> </div> </div> Sat, 16 Oct 2021 23:30:45 +0000 ariela 2202 at https://www.southbayrestoration.org