Kiawah and Seabrook islands are a critical site for the rufa Red Knot

Pelton, Mary Margaret; Padula, Sara R.; Garcia-Walther, Julian; Andrews, Mark; Mercer, Robert R.; Porter, Ron; Sanders, Felicia J.; Thibault, Janet M.; Senner, Nathan R.; Linscott, Jennifer A.

doi:10.18194/ws.00277

Cited by 6 publications

(16 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly, banded wintering knots in Florida were subsequently resighted from Georgia to Massachusetts [14]. Multiyear migration tracks of individual knots with geolocators show migration routes and stopover sites may vary interannually [10,13]. For example, one knot tracked with a geolocator for multiple years ew directly to the Arctic from South Carolina and the following year left South Carolina and stayed three days in North Carolina before ying to the Arctic [13].…”

Section: Discussionmentioning

confidence: 99%

“…Multiyear migration tracks of individual knots with geolocators show migration routes and stopover sites may vary interannually [10,13]. For example, one knot tracked with a geolocator for multiple years ew directly to the Arctic from South Carolina and the following year left South Carolina and stayed three days in North Carolina before ying to the Arctic [13]. Other individuals may stop in Delaware Bay one year but not the following year [10].…”

Section: Discussionmentioning

confidence: 99%

“…Resighting of knots who spend the winter in southwest Florida suggest that they regularly use the coastal route via Delaware Bay [14], although this could be due to disproportionate resighting effort in Delaware Bay rather than indicative of a migratory route preference. For example, three knots tracked with geolocators, including one knot that wintered in Tierra del Fuego, took an inland migration route from South Carolina to the Arctic [13].…”

Section: Introductionmentioning

confidence: 99%

“…Delaware Bay is the nal stop for many thousands of red knots before a single direct ight to Arctic breeding grounds, yet research in the last decade has identi ed additional stopover sites and illustrated diverse migration routes for knots using the Western Atlantic yway [10,11]. For example, the Southeast United States (North and South Carolina, Georgia, and Florida) has been identi ed as a critical region for knots as a stopover during north and southbound migration and during the winter [12][13][14]. The U.S.…”

Section: Introductionmentioning

confidence: 99%

“…Fish and Wildlife Service recent estimates for the red knot population is 63,600 [5]. The southbound passage population utilizing the Georgia coast was estimated to be approximately 23,400 knots, [12,15] while the Kiawah Island, Seabrook Island and Deveaux Bank area of South Carolina, supports a minimum spring passage population of more than 17,000 individuals [13]. This suggests the Southeast United States supports upwards of a third of the knot population during migration each year.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Spring migration patterns of red knots in the Southeast United States disentangled using automated telemetry

Smith¹,

Sanders

Lefevre

et al. 2023

Preprint

View full text Add to dashboard Cite

Background and Methods Shorebirds evolved flexibility in their migration strategies, with demonstrated variation even within the same population. Research in the last decade revealed diverse migration routes for red knots using the Western Atlantic flyway. Red Knots use the Southeast United States (North and South Carolina, Georgia, and Florida) as a stopover during north and southbound migration and during the winter. We examined northbound red knot migration routes and timing from the Southeast United States using an automated telemetry network. Our primary goal was to evaluate the relative use of an Atlantic migratory route through Delaware Bayversus an inland route through the Great Lakes en route to Arctic breeding grounds and to identify areas of apparent stopovers. Secondarily, we explored the association of red knot routes and ground speeds with prevailing atmospheric conditions. Results Most Red Knots migrating north from the Southeast United States skipped or likely skipped Delaware Bay (73%) while 27% of the knots stopped in Delaware Bay for at least 1 day. Most birds that skipped Delaware Bay traveled north, through the eastern Great Lake Basin. A few knots used an Atlantic Coast strategy that did not include Delaware Bay, relying instead on the areas around Chesapeake Bay or New York Bay for stopovers. We did not detect stopovers in the Great Lakes Basin suggesting that knots move quickly through this region. Nearly half of the red knots were detected in either James Bay or Hudson Bay with the first day of detection ranging from 19 May to 7 June. Nearly 80% of migratory trajectories were associated with tailwinds at departure. Conclusions Most knots tracked in our study did not stop in the Great Lakes, thus making the Southeast United States the last terminal stopover for some knots before reaching Arctic habitats. This study demonstrates the diversity of red knot spring migration routes and underscores how critically important the Southeast United States is as a spring stopover site for red knots. Future conservation planning must include the full network of sites that support the varied migratory routes and strategies used by this declining shorebird species.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Spring migration patterns of red knots in the Southeast United States disentangled using automated telemetry

Smith¹,

Sanders

Lefevre

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

Estimating recruitment rate and population dynamics at a migratory stopover site using an integrated population model

Tucker

McGowan

Nuse³

et al. 2023

Ecosphere

View full text Add to dashboard Cite

Consideration of the full annual cycle population dynamics can provide useful insight for conservation efforts, but collecting data needed to estimate demographic parameters is often logistically difficult. For species that breed in remote areas, monitoring is often conducted during migratory stopover or at nonbreeding sites, and the recruitment rate of new breeding adults can be difficult to estimate directly. Here, we present an integrated population model that uses mark-resight and count data to estimate survival probability, population growth rate, and recruitment rate for an Arctic-breeding shorebird of conservation concern, the red knot (Calidris canutus rufa), from data collected during spring stopover in Delaware Bay, USA, from 2005 to 2018. At this site, red knots feed primarily on the eggs of spawning horseshoe crabs (Limulus polyphemus), a legally harvested species. We used this model to estimate the relationship between horseshoe crab abundance and red knot demographics, which informed a recent revision to the framework used to establish horseshoe crab harvest regulations. Our analysis indicates that the red knot population was most likely stable from 2005 to 2018 (average λ = 1.03, 95% credible

show abstract

Spring migration patterns of red knots in the Southeast United States disentangled using automated telemetry

Smith

Sanders

Lefevre

et al. 2023

Sci Rep

View full text Add to dashboard Cite

Red Knots use the Southeast United States as a stopover during north and southbound migration and during the winter. We examined northbound red knot migration routes and timing using an automated telemetry network. Our primary goal was to evaluate the relative use of an Atlantic migratory route through Delaware Bay versus an inland route through the Great Lakes en route to Arctic breeding grounds and to identify areas of apparent stopovers. Secondarily, we explored the association of red knot routes and ground speeds with prevailing atmospheric conditions. Most Red Knots migrating north from the Southeast United States skipped or likely skipped Delaware Bay (73%) while 27% of the knots stopped in Delaware Bay for at least 1 day. A few knots used an Atlantic Coast strategy that did not include Delaware Bay, relying instead on the areas around Chesapeake Bay or New York Bay for stopovers. Nearly 80% of migratory trajectories were associated with tailwinds at departure. Most knots tracked in our study traveled north through the eastern Great Lake Basin, without stopping, thus making the Southeast United States the last terminal stopover for some knots before reaching boreal or Arctic stopover sites.

show abstract

Kiawah and Seabrook islands are a critical site for the rufa Red Knot

Cited by 6 publications

References 0 publications

Spring migration patterns of red knots in the Southeast United States disentangled using automated telemetry

Spring migration patterns of red knots in the Southeast United States disentangled using automated telemetry

Estimating recruitment rate and population dynamics at a migratory stopover site using an integrated population model

Spring migration patterns of red knots in the Southeast United States disentangled using automated telemetry

Contact Info

Product

Resources

About