Accelerating declines of North America’s shorebirds signal the need for urgent conservation action

Ornithological Applications, Journal Year: 2023, Volume and Issue: 125(2)

Published: Feb. 8, 2023

Abstract Shorebirds are declining to a greater extent than many other avian taxa around the world. In North America, shorebirds, along with aerial insectivores and grassland birds, have some of highest proportions species any group. Here, we apply new hierarchical Bayesian model analyze shorebird migration monitoring data from across 1980 2019, present most recent available estimates trends for 28 species. Point survey-wide in abundance were negative 26 (93%). Despite challenges low precision associated count data, 19 had 95% credible intervals that entirely negative. More half estimated lost >50% their abundance. Furthermore, rates decline accelerated during last three generations trend more 18 (64%) three-generation period comparison previous period. Many now exceed international criteria threatened listing. The analytic approach used here allows us regional variation trends, although survey coverage strength inference greatest eastern portions America (east 100°W). We found declines at staging sites Atlantic Coast Carolina Nova Scotia, lesser Gulf midcontinental United States. populations reported worrisome signal urgent need conservation action. addition, it would be beneficial validate these results through collection analysis complementary initiate demographic studies throughout annual cycle determine where when likely originate. This improved information will allow development targeted efforts reverse

Language: Английский

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New frontiers in bird migration research

Current Biology, Journal Year: 2022, Volume and Issue: 32(20), P. R1187 - R1199

Published: Oct. 1, 2022

Language: Английский

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Migration direction in a songbird explained by two loci

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Jan. 11, 2023

Migratory routes and remote wintering quarters in birds are often species even population specific. It has been known for decades that songbirds mainly migrate solitarily, the migration direction is genetically controlled. Yet, underlying genetic mechanisms remain unknown. To investigate basis of direction, we track genotyped willow warblers Phylloscopus trochilus from a migratory divide Sweden, where South-West migrating, South-East migrating subspecies form hybrid swarm. We find evidence follows dominant inheritance pattern with epistatic interaction between two loci explaining 74% variation. Consequently, most hybrids similarly to one parental subspecies, therefore do not suffer cost following an inferior, intermediate route. This significant implications understanding selection processes maintain narrow divides.

Language: Английский

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Rapid formation of new migration route and breeding area by Arctic geese

Current Biology, Journal Year: 2023, Volume and Issue: 33(6), P. 1162 - 1170.e4

Published: March 1, 2023

Many Arctic-breeding animals are at risk from local extirpation associated with habitat constriction and alterations in phenology their Arctic environment as a result of rapid global warming.1 Migratory species face additional increasing anthropogenic pressures along migratory routes such destruction, droughts, creation barriers, overexploitation.2,3 Such can only persist if they adjust migration, timing breeding, range.4 Here, we document both the abrupt (∼10 years) formation new migration route disjunct breeding population pink-footed goose (Anser brachyrhynchus) on Novaya Zemlya, Russia, almost 1,000 km away original grounds Svalbard. The has grown to 3,000-4,000 birds, explained by intrinsic growth continued immigration route. colonization was enabled recent warming Zemlya. We propose that social behavior geese, resulting cultural transmission among conspecifics well mixed-species flocks, is key this fast development acts mechanism enabling ecological rescue rapidly changing world.

Language: Английский

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West Nile virus eco-epidemiology and climate change

PLOS Climate, Journal Year: 2023, Volume and Issue: 2(5), P. e0000129 - e0000129

Published: May 1, 2023

West Nile virus (WNV) is an arbovirus with a wide geographical distribution. It maintained in enzootic bird-mosquito cycle and exhibits regular zoonotic transmission to humans, whom it can cause fever neuroinvasive disease. Over the last decades, WNV has emerged as serious health threat profound impacts on animal human health. broadly accepted that climate change of through multiple pathways via its vectors, pathogen, hosts, environment. Although some clarity been established, outcomes these climate-driven processes are yet be better understood before they fully benefit tailored prevention control measures. This review focuses eco-epidemiology how impacted by integrative lens. We discuss role eco-epidemiological modeling knowledge generation highlight importance adopting interdisciplinary transdisciplinary One Health approach for improved surveillance, data collection, modeling, translation into actionable policy control.

Language: Английский

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Evolutionarily distinct lineages of a migratory bird of prey show divergent responses to climate change

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: April 13, 2025

Accurately predicting species' responses to anthropogenic climate change is hampered by limited knowledge of their spatiotemporal ecological and evolutionary dynamics. We combine landscape genomics, demographic reconstructions, species distribution models assess the eco-evolutionary past fluctuations future an Afro-Palaearctic migratory raptor, lesser kestrel (Falco naumanni). uncover two evolutionarily ecologically distinct lineages (European Asian), whose history, divergence, historical range were profoundly shaped climatic fluctuations. Using projections, we find that Asian lineage at higher risk contraction, increased migration distance, maladaptation, consequently greater extinction than European lineage. Our results emphasise importance providing context as a baseline for understanding contemporary change, illustrate how incorporating intraspecific genetic variation improves realism vulnerability assessments.

Language: Английский

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Geomagnetic disturbance associated with increased vagrancy in migratory landbirds

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: Jan. 9, 2023

Rare birds known as "accidentals" or "vagrants" have long captivated birdwatchers and puzzled biologists, but the drivers of these rare occurrences remain elusive. Errors in orientation navigation are considered one potential driver: migratory use Earth's magnetic field-sensed using specialized magnetoreceptor structures-to traverse distances over often unfamiliar terrain. Disruption to magnetoreceptors field itself could potentially cause errors leading vagrancy. Using data from 2 million captures 152 landbird species North America 60 years, we demonstrate a strong association between disruption avian vagrancy during fall migration. Furthermore, find that increased solar activity-a disruptor magnetoreceptor-generally counteracts this effect, mitigating misorientation by disabling ability for orient. Our results link hypothesized phenomenon vagrancy, further demonstrating importance magnetoreception among mechanisms birds. Geomagnetic disturbance may important downstream ecological consequences, vagrants experience mortality rates facilitate range expansions populations organisms they disperse.

Language: Английский

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Avian migration clocks in a changing world

Journal of Comparative Physiology A, Journal Year: 2024, Volume and Issue: 210(4), P. 691 - 716

Published: Feb. 2, 2024

Abstract Avian long-distance migration requires refined programming to orchestrate the birds’ movements on annual temporal and continental spatial scales. Programming is particularly important as typically anticipate future environmental conditions. Hence, has long been of particular interest in chronobiology. Captivity studies using a proxy, shift nocturnality during seasons (i.e., migratory restlessness), have revealed circannual circadian regulation, well an innate sense direction. Thanks rapid development tracking technology, detailed information from free-flying birds, including annual-cycle data actograms, now allows relating this mechanistic background behaviour wild. Likewise, genomic approaches begin unravel many physiological pathways that contribute migration. Despite these advances, it still unclear how programmes are integrated with specific conditions experienced journey. Such knowledge imminently environments undergo anthropogenic modification. Migratory birds group not dealing changes, yet some species show remarkable adjustments at behavioural genetic levels. Integrated research interdisciplinary collaborations needed understand range responses change, more broadly, functioning timing under natural

Language: Английский

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The significance of partial migration for food web and ecosystem dynamics

Ecology Letters, Journal Year: 2022, Volume and Issue: 26(1), P. 3 - 22

Published: Nov. 28, 2022

Migration is ubiquitous and can strongly shape food webs ecosystems. Less familiar, however, that the majority of life cycle, seasonal diel migrations in nature are partial migrations: only a fraction population migrates while other individuals remain their resident ecosystem. Here, we demonstrate different impacts migration rendering it fundamental to our understanding significance for web ecosystem dynamics. First, affects spatiotemporal distribution ecosystem-level processes they drive differently than expected under full migration. Second, whether an individual or not regularly correlated with morphological, physiological, and/or behavioural traits its food-web impacts. Third, dynamics migrating, enabling potential feedbacks between causes consequences within across These impacts, individually combination, yield unintuitive effects dynamics, diversity functions By presenting first integration trophic (meta-)community (meta-)ecosystem ecology, provide roadmap studying how affected by changing world.

Language: Английский

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North American avian species that migrate in flocks show greater long-term non-breeding range shift rates

Movement Ecology, Journal Year: 2025, Volume and Issue: 13(1)

Published: Jan. 13, 2025

Abstract Background Many species are exhibiting range shifts associated with anthropogenic change. For migratory species, colonisation of new areas can require novel programmes that facilitate navigation between independently-shifting seasonal ranges. Therefore, in some cases range-shifts may be limited by the capacity for to transferred generations, which genetically and socially mediated. Methods Here we used 50 years North American Breeding Bird Survey Audubon Christmas Count data test prediction breeding and/or non-breeding more prevalent among flocking migrants, possess a rapid social transmission migration routes. Results Across 122 bird was significant positive predictor magnitude centre abundance (COA) shift within our study region (conterminous United States Southern Canada). subset 81 where age-structured determined, migrating mixed-age flocks produced greatest solo migrants lowest. Flocking not COA shifts, were better explained absolute population trends distance. Conclusions Our results suggest grouping play an important role facilitating distributional responses climate change species. We highlight need gain understanding programme inheritance, how this influences spatiotemporal dynamics under environmental

Language: Английский

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