Postbreeding dispersal and staging of Common and Arctic Terns throughout the western North Atlantic

Loring, Pamela H.; Ronconi, Robert A.; Welch, Linda J.; Taylor, Philip D.

doi:10.5751/ace-01086-120220

Cited by 11 publications

(6 citation statements)

References 27 publications

(31 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Terns from our study site on average departed from Svalbard on 3 September, which is from 1 to 2 mo later than previously shown in studies from more southerly breeding areas (Table S1; Egevang et al 2010, Fijn et al 2013, Loring et al 2017, Volkov et al 2017, Alerstam et al 2019, Redfern & Bevan 2020a. The late departure date of our tracked individuals corresponds with later departure of other species from northern latitudes (Butler et al 1998, Gilg et al 2013, Davis et al 2016.…”

Section: Migration Non-breeding Areas and Population Comparisonsupporting

confidence: 61%

“…According to Bourne & Casement (1996), Arctic terns are present in the area from late April until late October, with a distinct peak in August. This time window corresponds with breeding site departure dates of terns from lower (Egevang et al 2010, Fijn et al 2013, Loring et al 2017, Volkov et al 2017 and higher latitudes (our study; Box 1).…”

Section: Migration Patterns and The Environmentsupporting

confidence: 57%

“…As a general pattern, migratory birds breeding at higher latitudes depart from their breeding areas later than their southern conspecifics, owing to the later onset of the breeding season at high latitudes (Conklin et al 2010, Briedis et al 2016. Similarly, our tracked terns arrived at the breeding sites later than their conspecifics breeding at more southern latitudes (Egevang et al 2010, Fijn et al 2013, Loring et al 2017, Volkov et al 2017, Alerstam et al 2019, Redfern & Bevan 2020a. Such population-level differences in migration timing can lead to significant variation in migration strategies, as different populations face different environmental conditions en route (González-Solís et al 2009, Sittler et al 2011, Hanssen et al 2016).…”

Section: Migration Non-breeding Areas and Population Comparisonmentioning

confidence: 51%

See 2 more Smart Citations

Seasonally specific responses to wind patterns and ocean productivity facilitate the longest animal migration on Earth

Hromádková

Pavel

Flousek³

et al. 2020

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

Migratory strategies of animals are broadly defined by species’ eco-evolutionary dynamics, while behavioural plasticity according to the immediate environmental conditions en route is crucial for energy efficiency and survival. The Arctic tern Sterna paradisaea is known for its remarkable migration capacity, as it performs the longest migration known by any animal. Yet, little is known about the ecology of this record-breaking journey. Here, we tested how individual migration strategies of Arctic terns are adapted to wind conditions and fuelling opportunities along the way. To this end, we deployed geolocators on adult birds at their breeding sites in Svalbard, Norway. Our results confirm fundamental predictions of optimal migration theory: Arctic terns tailor their migration routes to profit from (1) tailwind support during the movement phase and (2) food-rich ocean areas during the stopover phase. We also found evidence for seasonally distinct migration strategies: terns prioritize fuelling in areas of high ocean productivity during the southbound autumn migration and rapid movement relying on strong tailwind support during the northbound spring migration. Travel speed in spring was 1.5 times higher compared to autumn, corresponding to an increase in experienced wind support. Furthermore, with their pole-to-pole migration, Arctic terns experience approximately 80% of all annual daylight on Earth (the most by any animal), easing their strictly diurnal foraging behaviour. However, our results indicate that during migration daylight duration is not a limiting factor. These findings provide strong evidence for the importance of interaction between migrants and the environment in facilitating the longest animal migration on Earth.

show abstract

Section: Migration Non-breeding Areas and Population Comparisonsupporting

confidence: 61%

Section: Migration Patterns and The Environmentsupporting

confidence: 57%

Section: Migration Non-breeding Areas and Population Comparisonmentioning

confidence: 51%

See 1 more Smart Citation

Seasonally specific responses to wind patterns and ocean productivity facilitate the longest animal migration on Earth

Hromádková

Pavel

Flousek³

et al. 2020

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

show abstract

“…This indicates that regardless of where they came from, hatch-year Roseate Terns tended to depart the Cape Cod staging grounds (permanently) around the same time, and this was similar across both years of our study. Additionally, our results for timing of departure are consistent with previous findings for Common Terns at the Cape Cod staging grounds (Nisbet et al 2011, Loring et al 2017). Together, these results suggest that some exogenous force, such as environmental conditions, day length, and so forth, may mediate the timing of tern migration in this area.…”

Section: Discussionsupporting

confidence: 92%

“…Birds from the northern region may move south to the Cape Cod area sooner and in higher numbers than birds from the southern region because of the reduction in availability of ephemeral food resources in the cold-water northern sites. Loring et al (2017) also found that Common Tern departure from the northern region (Nova Scotia colony sites) was significantly earlier than departure from Monomoy Island, a colony site in the southern region. Bird migration routes and phenology have evolved to occur concurrently with peak periods of resource availability (Stenseth and Mysterud 2002); thus, Roseate and Common Terns from the northern part of the NWA range may become food limited earlier than those from the southern region and therefore spend more time staging at Cape Cod National Seashore than their southern counterparts.…”

Section: Discussionmentioning

confidence: 79%

Residency, recruitment, and stopover duration of hatch-year Roseate Terns (Sterna dougallii) during the premigratory staging period

Davis¹,

Karpanty²,

Spendelow³

et al. 2019

ACE

View full text Add to dashboard Cite

2019.Residency, recruitment, and stopover duration of hatch-year Roseate Terns (Sterna dougallii) during the premigratory staging period. Avian Conservation and Ecology 14(2):11. https://doi.ABSTRACT. Seabird demography and spatial distribution outside of the breeding season are poorly understood, and migratory stopover and staging sites represent important energetic bottlenecks during the avian annual cycle. We quantified hatch-year Roseate Tern (Sterna dougallii) weekly residency, weekly recruitment rate into the staging population, and derived weekly staging population growth rate during two postbreeding, premigratory staging seasons (2014 and 2015) at Cape Cod National Seashore, Massachusetts, USA. We also estimated hatch-year tern stopover duration at Cape Cod staging grounds. Tern residency probability at Cape Cod National Seashore during 2014 and 2015 was nearly 1 during the first weeks of the season and decreased steadily over the last 4 weeks to ~0.5 in the final week of the study. Recruitment rates into the staging population, representing the weekly per capita change in hatchyear terns present during the staging season, indicated that most terns arrived on the staging grounds during the first weeks of the staging season (16 July to 19 August). We also identified differences in staging duration between birds from the two breeding regions.Hatch-year terns from the southernmost region spent less time staging at Cape Cod National Seashore than their northern counterparts in both 2014 and 2015. These differences may indicate alternative staging strategies for individuals originating in different regions and possibly reveal differences in resource conditions between these areas, for example, in the availability of ephemeral prey fish. Taux de résidence et de recrutement et durée de séjour de jeunes Sternes de Dougall (Sterna dougallii) de l'année pendant la saison de rassemblement pré-migrationRÉSUMÉ. La démographie et la répartition spatiale des oiseaux marins en dehors de la saison de nidification sont peu connues, et les haltes migratoires représentent d'importants goulots énergétiques durant le cycle annuel des oiseaux. Nous avons quantifié le taux de résidence et de recrutement hebdomadaires de jeunes Sternes de Dougall (Sterna dougallii) de l'année et avons dérivé le taux de croissance hebdomadaire de la population locale durant deux saisons de rassemblement post-nidification et pré-migration d'oiseaux (2014 et 2015) au Cape Cod National Seashore, Massachusetts, États-Unis. Nous avons aussi calculé la durée de séjour des jeunes sternes de l'année aux haltes migratoires de Cape Cod. La probabilité de résidence des sternes au Cape Cod National Seashore en 2014 et 2015 a atteint presque 1 durant les premières semaines de la saison et a chuté de façon continue durant les 4 dernières semaines, pour atteindre ~0,5 la dernière semaine de l'étude. Le taux de recrutement dans la population des haltes migratoires, représentant le changement hebdomadaire par capita de jeunes de l'année présents durant la saison...

show abstract

Arctic tern flyways and the changing Atlantic Ocean wind patterns

Skyllas

Loonen

2023

Climate Change Ecology

View full text Add to dashboard Cite

Postbreeding dispersal and staging of Common and Arctic Terns throughout the western North Atlantic

Cited by 11 publications

References 27 publications

Seasonally specific responses to wind patterns and ocean productivity facilitate the longest animal migration on Earth

Seasonally specific responses to wind patterns and ocean productivity facilitate the longest animal migration on Earth

Residency, recruitment, and stopover duration of hatch-year Roseate Terns (Sterna dougallii) during the premigratory staging period

Arctic tern flyways and the changing Atlantic Ocean wind patterns

Contact Info

Product

Resources

About