Earlier springs increase goose breeding propensity and nesting success at Arctic but not at temperate latitudes

Journal of Animal Ecology, Journal Year: 2023, Volume and Issue: 92(12), P. 2399 - 2411

Published: Oct. 29, 2023

Intermittent breeding is an important tactic in long-lived species that trade off survival and reproduction to maximize lifetime reproductive success. When conditions are unfavourable, individuals expected skip ensure their own survival. Breeding propensity (i.e. the probability for a mature female breed given year) essential parameter determining output population dynamics, but not often studied birds because it difficult obtain unbiased estimates. especially variable at high latitudes, potentially resulting large effect on of Arctic-breeding migratory birds, such as geese. With novel approach, we used GPS-tracking data determine nest locations, nesting success barnacle geese, how these varied with latitude timing arrival grounds relative local onset spring. Onset spring was better predictor than arrival. At Arctic latitudes (>66° N), decreased from 0.89 (95% CI: 0.65-0.97) early springs 0.22 0.06-0.55) late springs, while temperate between 0.75 0.38-0.93) 0.41-0.99) regardless phenology. Nesting followed similar pattern lower later latitudes. In larger proportion geese started despite arriving spring, possibly enabled them use resources fuel egg laying incubation. While earlier due climate warming considered have mostly negative repercussions through phenological mismatches, our results suggest effects may partly be offset by higher

Language: Английский

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Citizen science data confirm that expanding non‐breeding distributions of goose and swan species correlate with their increasing abundance

Ibis, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 4, 2024

We combined data from two independent Danish citizen science time‐series to describe changes in (1) abundance and (2) distribution of 12 wintering populations geese swans tested the hypothesis that increases national since 2003 correlated with an expansion into formerly unoccupied winter farmland habitat. Five showed significant abundance, declined remainder no trend over same period; nine (including five nationally increasing declining) significantly positive correlations between annual range size, including one stable population showing only local expansion. These results support our prediction key goose swan benefiting exploitation are greatest correlation Denmark. This implies continued growth these will lead their ranges, which not increase potential for agricultural conflict but importantly also geographical extent such conflicts.

Language: Английский

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Effects of capture and GPS-tagging in spring on migration timing and reproduction in Pink-footed geese Anser brachyrhynchus

Animal Biotelemetry, Journal Year: 2024, Volume and Issue: 12(1)

Published: April 25, 2024

Abstract Background GPS-transmitters enable detailed study of animal behaviour but may impact the animals. Impacts vary from short-term stress and habituation to longer-term effects on e.g., migration reproduction. To impacts, ideally, true controls (i.e., uncaptured or untagged animals) are used, unbiased assessments their timing breeding performance challenging, especially in remote areas. Alternatively, quasi-controls can be used: individuals tagged longer ago, same later years. Quasi-controls reveal tagging that differ between first following Results We captured Pink-footed geese ( Anser brachyrhynchus ) spring summer deployed GPS-transmitter neckbands. In spring, were caught with cannon clap nets stopovers Norway Finland, 2 weeks before departure areas Svalbard Novaya Zemlya. summer, rounded up during wing moult Svalbard. First, we compared recently 1–4 years prior. Newly migrated significantly later, by days, than previously geese, both at stopover arrival grounds, while duration did not differ. Breeding propensity laying date differ, nesting success tended lowered, resulting a lower annual probability produce hatchlings geese. Second, within advanced next year, suggesting delay spring. This was likely an ageing effect, as showed no advancing over Third, Svalbard, observed brood sizes 1 year after tagging. Conclusions The capture GPS-tagging delayed lowered year. These lasted reported week-long time budgets neck-banding body condition. Additional is needed evaluate permanent which remain undetected quasi-controls.

Language: Английский

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Origin stories: how does learned migratory behaviour arise in populations?

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 27, 2024

ABSTRACT Although decades of research have deepened our understanding the proximate triggers and ultimate drivers migrations for a range taxa, how populations establish remains mystery. However, recent studies begun to illuminate interplay between genetically inherited learned migrations, opening door evaluation migration may be learned, established, maintained. Nevertheless, migratory species where role learning is evident, we lack comprehensive framework learn specific routes refine movements over time (i.e., their origins). This review draws on advances in behavioural movement ecology offer could transition from resident by connecting cognitive fine‐scale perceptual cues decisions with literature cultural transmission, emergent pattern migration. We synthesize multiple mechanisms processes that allow population respond seasonal resource limitation, then encode spatial environmental information about availability memory engage social navigate landscapes track resources better. A rise global reintroduction efforts, along human‐induced rapid shifts changing make evaluating origins this threatened behaviour more urgent than ever.

Language: Английский

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Biodiversity hotspot assessment in the Altai Mountains transboundary region based on Mammals and Aves

PLoS ONE, Journal Year: 2024, Volume and Issue: 19(12), P. e0314075 - e0314075

Published: Dec. 4, 2024

Most of the world’s mountains are distributed across national boundaries. However, due to sovereignty boundaries, conservation plans between neighboring countries often uncoordinated. Against backdrop impending environmental changes, transboundary mountain ecosystems and biodiversity face significant threats. This study employs MaxEnt model, leveraging data on climate, topography, landscape, human activities predict potential distribution areas for mammals birds, aiming identify hotspots (BHs) analyze their mechanisms in Altai Mountains region (AMTR). Results indicate that BHs primarily located near Russian-Mongolian border, significantly influenced by climate variables, elevation, activities. The also highlights changes key habitat types (KHTs), particularly transitions grassland bareland, impact climate-driven land cover change BHs. Furthermore, research evaluates coverage protected emphasizes importance identifying (KBAs) establishing corridors enhanced species protection future adaptation. findings underscore necessity cooperation focused strategies mitigate adverse effects

Language: Английский

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Southern breeding populations drive declining migration distances in Arctic and subarctic geese

Ecography, Journal Year: 2024, Volume and Issue: 2024(8)

Published: June 19, 2024

Migration is a prevalent strategy among birds used to track seasonal resources throughout the year. Individual and population‐level migratory movements provide insight life‐history variation, carry‐over effects, impacts of climate change. Our understanding how geographic variation in species' breeding or wintering grounds can impact migration distances limited. However, changes have important fitness consequences for individuals conservation implications populations, particularly if connectivity altered during annual cycle. In this study, we use three decades data from United States Geological Survey Bird Banding Laboratory six species Arctic subarctic geese. We employ Bayesian hierarchical framework test distance between locations has changed over time, while accounting latitude grounds. A model that included only temporal trend estimated average rate change distance, across all species, at −3.0 km/year period 1990–2019. Five showed significant decrease distances. Including an interaction effect with revealed reduction was strongest southernmost populations four species. For those northern were either relatively unchanged increasing. This indicates southern geese had stronger association observed spatiotemporal ranges, potentially influenced by combination climatic biotic factors (e.g. resource availability competitive interactions) uniquely these populations. Abundant, long‐term banding shows promise illuminating patterns under change, leading improved management outcomes, regional continental scales.

Language: Английский

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Translocation experiment of taiga bean geese Anser fabalis provides evidence for oblique social learning of moult migration

Journal of Avian Biology, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 20, 2024

While there is ample evidence supporting genetic control of migratory behaviour in short‐lived passerines, long‐lived social species have been assumed to rely solely on cultural inheritance routes. Evidence from experimental studies this idea scarce. We tested whether the moult migration taiga bean geese Anser fabalis has an inherited component or birds need oblique learning (where knowledge transferred any experienced individual naïve conspecific) carry out journey. In many waterfowl species, non‐breeders and failed breeders migrate remote places for wing while successful stay at breeding grounds with their chicks. translocated one‐year‐old before first sites outside range examine they display innate without conspecifics not. The were equipped GPS‐transmitters released randomly assigned groups two. Wild immediately after capture other non‐breeding geese, a procedural group consisting older was held captivity until being same time but place where captured. Most found either joined locally moulting followed Russia. Two did not find settled together southwest Finland. wild moult‐migrated as expected, only one Russia remaining three stayed Our results support that culturally inherited, highlighting importance non‐relative, adult individuals maintaining population‐specific behaviours.

Language: Английский

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Changes in the spatial patterns of avian migrations: Evidence, mechanisms and causes

Diversity and Distributions, Journal Year: 2023, Volume and Issue: 29(12), P. 1527 - 1545

Published: Oct. 19, 2023

Abstract Aims Understanding the suite of environmental changes impacting migration and disentangling these from dependencies between migratory stages is fundamental to understanding drivers mechanisms causing spatial shifts bird distributions. In this review, our objectives are to: (i) provide evidence change at all stages, (ii) identify key driving change, (iii) discuss how anthropogenic influences patterns, (iv) highlight interdependencies (v) offer a framework for pattern changes. Location Migratory land birds globally. Methods We defined literature search find examples in avian migrations their underlying mechanisms. From top 1000 results, sorted by relevance, we retained 81 papers published 1991 2020. Results Spatial distributions occur throughout annual cycle, but patterns vary across taxa stages. Since migrants occupy multiple sites has particularly complex repercussions Multiple can affect each stage due fitness asymmetries strategies individuals responding flexibly within generations. one (e.g. breeding) also trigger further indirect other stopovers) Conclusions To understand underpinning changes, comprehensive year‐round distributional data crucial observing competing drivers. Biologging technology could elucidate individual‐level uncover strategies. Ultimately, gaining clearer will aid predicting responses birds. This paramount mitigating effects assessing future population viability vulnerable extensive taxonomic group.

Language: Английский

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Experience reduces route selection on conspecifics by the collectively migrating white stork

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Nov. 21, 2023

Summary Migration can be an energetically costly behavior with strong fitness consequences in terms of mortality and reproduction 1–11 . Migrants should select migratory routes to minimize their costs, but both costs benefits may change experience 12–14 This raises the question whether changes how individuals routes. Here we investigate effect age on route selection criteria a collectively migrating soaring bird, white stork ( Ciconia ciconia ). We perform step analysis longitudinal data set tracking 158 storks over up nine years quantify they based social atmospheric environments, examine this age. find clear ontogenetic shifts criteria. Juveniles choose that have good conditions high conspecific densities. Yet, as gain storks’ availability information reduces—after fifth migration experienced birds also low Thus, our results suggest age, gradually replace gleaned from other gained experience, allowing them shift timing increasing time scale at which

Language: Английский

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Long-Term Dynamics of Stopover Use by the Bluethroat Luscinia svecica

Ardeola, Journal Year: 2024, Volume and Issue: 71(2)

Published: May 15, 2024

Entender la dinámica en calidad lugares de parada migratoria y respuesta adaptativa las aves a ella son dos aspectos fundamentales para comprender estrategia especies así como su impacto supervivencia eficacia biológica los individuos. Para investigar esta dinámica, analizamos 16 años seguimiento del ruiseñor pechiazul Luscinia svecica Txingudi, una zona muy importante migración especie el norte España. Nuestro objetivo fue examinar variaciones anuales posibles tendencias temporales estructura demográfica (proporción subespecies, edad sexo), tamaño población, fenología paso, duración migratoria, cantidad tasa ganancia peso. Tales pueden indicar cambios valor ecológico área migratoria. El índice abundancia mostró un descenso medio anual 2,3%. Asimismo, tiempo estancia (medido probabilidad permanencia zona) peso variaron anualmente, mostrando este último tendencia negativa. Sin embargo, paso deposición reservas se mantuvieron constantes, con tan sólo pequeñas desviaciones respecto al concretos, ciertos parámetros. registrado es comparable observado poblaciones reproductoras francesas, lo que sugiere Txingudi podrían reflejar poblacional áreas reproducción. En futuro, ampliación tipo estudios, incluyendo comparativas entre rutas migratorias, serán esenciales mejorar conocimiento sobre temporal largo plazo puntos migratoria.—Arizaga, J. Gordo, O. (2024). Dinámica uso svecica. Ardeola, 71: 291-306.

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