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Gunnarsson TG, Alves JA, Gilroy JJ, Þórisson B, Sutherland WJ, Potts PM, Gill JA. Movement of juvenile migratory birds from settlement to adulthood across the non-breeding range. J Anim Ecol 2024. [PMID: 38946701 DOI: 10.1111/1365-2656.14138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Accepted: 05/07/2024] [Indexed: 07/02/2024]
Abstract
Among migratory vertebrates, high levels of fidelity to non-breeding sites during adulthood are common. If occupied sites vary in quality, strong site fidelity can have profound consequences for individual fitness and population demography. Given the prevalence of adult site fidelity, the regions of the non-breeding range to which juveniles first migrate, and the scale of any subsequent movements, are likely to be pivotal in shaping distributions and demographic processes across population ranges. However, inherent difficulties in tracking migratory individuals through early life mean that opportunities to quantify juvenile settlement and movements across non-breeding ranges, and the mechanisms involved, are extremely rare. Through long-term, range-wide resightings of hundreds of colour-marked individuals from their first migration to adulthood and the application of state-space models, we quantify levels of juvenile and adult regional-scale movements and distances at different life stages across the whole non-breeding distribution range in a migratory shorebird, the Black-tailed Godwit (Limosa limosa islandica). We show that the probability of individuals changing non-breeding regions (seven historical wintering regions spanning the Western Europe range) at all ages is very low (mean movement probability = 10.9% from first to subsequent winter, and 8.3% from first adult winter to later winters). Movement between regions was also low between autumn and winter of the same year for both juveniles (mean movement probability = 17.0%) and adults (10.4%). The great majority of non-breeding movements from the first autumn to adulthood were within regions and less than 100 km. The scarcity of regional-scale non-breeding movements from the first autumn to adulthood means that the factors influencing where juveniles settle will be key determinants of non-breeding distributions and of the rate and direction of changes in distributions.
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Affiliation(s)
| | - José A Alves
- South Iceland Research Centre, University of Iceland, Laugarvatn, Iceland
- Department of Biology & CESAM-Centre for Environmental and Marine Studies, University of Aveiro, Aveiro, Portugal
| | - James J Gilroy
- School of Biological Sciences, University of East Anglia, Norwich, UK
- School of Environmental Sciences, University of East Anglia, Norwich, UK
| | - Böðvar Þórisson
- South Iceland Research Centre, University of Iceland, Laugarvatn, Iceland
| | | | | | - Jennifer A Gill
- School of Biological Sciences, University of East Anglia, Norwich, UK
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2
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Piironen A, Laaksonen T. A gradual migratory divide determines not only the direction of migration but also migration strategy of a social migrant bird. Proc Biol Sci 2023; 290:20231528. [PMID: 37608717 PMCID: PMC10445028 DOI: 10.1098/rspb.2023.1528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 07/31/2023] [Indexed: 08/24/2023] Open
Abstract
Migratory divides separate populations of migratory animals, facilitating the evolution of intraspecific differences in migration strategies. Migration strategies are expected to be different for birds using different flyways and environments, but the knowledge regarding the impact of the flyway on individual migration strategies is scarce. By using satellite tracking and neckband resightings, we reveal the existence and structure of a gradual migratory divide between two European flyway populations of greylag geese Anser anser. Birds breeding at the far end of the Gulf of Bothnia in the Baltic Sea coast use the Western Flyway, those breeding in the Gulf of Finland the Central Flyway and those breeding between these extremes scatter to the two flyways. By using Gaussian process modelling, we show that migration strategies differed between the flyways. The birds using the Western Flyway migrated earlier in autumn, performed longer annual migration and made a clear stopover during migration, whereas the birds using the Central Flyway flew directly to their wintering sites. The gradual migratory divide that also divides migration strategies provides insights into migratory divides on birds with learned migration. Distinct migration strategies in different flyways provide exciting possibilities to further study the factors driving migration strategies.
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Affiliation(s)
- Antti Piironen
- Department of Biology, University of Turku, Vesilinnantie 5, 20500 Turku, Finland
| | - Toni Laaksonen
- Department of Biology, University of Turku, Vesilinnantie 5, 20500 Turku, Finland
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3
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Fattorini N, Costanzo A, Romano A, Rubolini D, Baillie S, Bairlein F, Spina F, Ambrosini R. Eco-evolutionary drivers of avian migratory connectivity. Ecol Lett 2023. [PMID: 37125435 DOI: 10.1111/ele.14223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 03/23/2023] [Accepted: 03/24/2023] [Indexed: 05/02/2023]
Abstract
Migratory connectivity, reflecting the extent by which migrants tend to maintain their reciprocal positions in seasonal ranges, can assist in the conservation and management of mobile species, yet relevant drivers remain unclear. Taking advantage of an exceptionally large (~150,000 individuals, 83 species) and more-than-a-century-long dataset of bird ringing encounters, we investigated eco-evolutionary drivers of migratory connectivity in both short- and long-distance Afro-Palearctic migratory birds. Connectivity was strongly associated with geographical proxies of migration costs and was weakly influenced by biological traits and phylogeny, suggesting the evolutionary lability of migratory behaviour. The large intraspecific variability in avian migration strategies, through which most species geographically split into distinct migratory populations, explained why most of them were significantly connected. By unravelling key determinants of migratory connectivity, our study improves knowledge about the resilience of avian migrants to ecological perturbations, providing a critical tool to inform transboundary conservation and management strategies at the population level.
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Affiliation(s)
- Niccolò Fattorini
- Department of Environmental Science and Policy, University of Milano, Milan, Italy
- Department of Life Sciences, University of Siena, Siena, Italy
- NBFC, National Biodiversity Future Center, Palermo, Italy
| | - Alessandra Costanzo
- Department of Environmental Science and Policy, University of Milano, Milan, Italy
| | - Andrea Romano
- Department of Environmental Science and Policy, University of Milano, Milan, Italy
| | - Diego Rubolini
- Department of Environmental Science and Policy, University of Milano, Milan, Italy
- Istituto di Ricerca sulle Acque, IRSA-CNR, Brugherio, Italy
| | | | - Franz Bairlein
- Institute of Avian Research, Wilhelmshaven, Germany
- Max-Planck-Institute of Animal Behavior, Radolfzell, Germany
| | - Fernando Spina
- Area Avifauna Migratrice, Istituto Superiore per la Protezione e la Ricerca Ambientale (ISPRA), Ozzano dell'Emilia, Italy
| | - Roberto Ambrosini
- Department of Environmental Science and Policy, University of Milano, Milan, Italy
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4
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Tao L, Bhandawat V. Mechanisms of Variability Underlying Odor-Guided Locomotion. Front Behav Neurosci 2022; 16:871884. [PMID: 35600988 PMCID: PMC9115574 DOI: 10.3389/fnbeh.2022.871884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 03/14/2022] [Indexed: 11/17/2022] Open
Abstract
Changes in locomotion mediated by odors (odor-guided locomotion) are an important mechanism by which animals discover resources important to their survival. Odor-guided locomotion, like most other behaviors, is highly variable. Variability in behavior can arise at many nodes along the circuit that performs sensorimotor transformation. We review these sources of variability in the context of the Drosophila olfactory system. While these sources of variability are important, using a model for locomotion, we show that another important contributor to behavioral variability is the stochastic nature of decision-making during locomotion as well as the persistence of these decisions: Flies choose the speed and curvature stochastically from a distribution and locomote with the same speed and curvature for extended periods. This stochasticity in locomotion will result in variability in behavior even if there is no noise in sensorimotor transformation. Overall, the noise in sensorimotor transformation is amplified by mechanisms of locomotion making odor-guided locomotion in flies highly variable.
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Affiliation(s)
- Liangyu Tao
- School of Biomedical Engineering, Science and Health, Drexel University, Philadelphia, PA, United States
| | - Vikas Bhandawat
- School of Biomedical Engineering, Science and Health, Drexel University, Philadelphia, PA, United States
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5
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Marx M, Schumm YR, Kardynal KJ, Hobson KA, Rocha G, Zehtindjiev P, Bakaloudis D, Metzger B, Cecere JG, Spina F, Cianchetti-Benedetti M, Frahnert S, Voigt CC, Lormée H, Eraud C, Quillfeldt P. Feather stable isotopes (δ2Hf and δ13Cf) identify the Sub-Saharan wintering grounds of turtle doves from Europe. EUR J WILDLIFE RES 2022. [DOI: 10.1007/s10344-022-01567-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AbstractConservation of migratory birds requires knowledge of breeding and nonbreeding ranges and the connections between them. European turtle doves (Streptopelia turtur) are Palearctic-African long-distance migrants with wintering areas in the Sub-Saharan belt that are classed as vulnerable due to strong population declines. However, detailed non-breeding locations of individuals from different migratory flyways are unknown. To identify wintering regions of turtle doves, we measured stable isotopes of feathers grown on the wintering grounds and used a dual-isotope (hydrogen (δ2Hf) and carbon (δ13Cf)) probabilistic assignment to analyse origins of individuals migrating through the western and central/eastern flyways. The most probable wintering areas for turtle dove samples from both flyways were in the western and central Sub-Sahara. However, we found differences in δ2Hf and δ13Cf values between turtle doves following different migratory routes (western vs central/eastern flyway). This result suggests a higher likelihood of origins in the central Sub-Sahara for central and eastern migrants, while turtle doves using the western flyway originated primarily in the western Sub-Sahara, highlighting the importance of both regions for the future conservation of turtle doves from European breeding populations. The establishment of migratory connectivity of populations requires sampling from birds from the European as well as Asian continent; however, we provide important results that can be used to test hypotheses regarding population declines resulting from factors experienced over the full annual cycle for some populations.
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6
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Deboelpaep E, Partoens L, Koedam N, Vanschoenwinkel B. Highway(s) overhead: Strong differences in wetland connectivity and protected status challenge waterbird migration along the four Palearctic‐Afrotropical flyways. DIVERS DISTRIB 2022. [DOI: 10.1111/ddi.13508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Affiliation(s)
- Evelien Deboelpaep
- Vrije Universiteit Brussel Ecology & Biodiversity Research Group Community Ecology Lab Brussels Belgium
- Vrije Universiteit Brussel Ecology & Biodiversity Research Group Plant Biology & Nature Management Brussels Belgium
| | - Lisa Partoens
- Vrije Universiteit Brussel Ecology & Biodiversity Research Group Community Ecology Lab Brussels Belgium
- Vrije Universiteit Brussel Ecology & Biodiversity Research Group Plant Biology & Nature Management Brussels Belgium
| | - Nico Koedam
- Vrije Universiteit Brussel Ecology & Biodiversity Research Group Plant Biology & Nature Management Brussels Belgium
| | - Bram Vanschoenwinkel
- Vrije Universiteit Brussel Ecology & Biodiversity Research Group Community Ecology Lab Brussels Belgium
- Centre for Environmental Management University of the Free State Bloemfontein South Africa
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7
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Herbert JA, Mizrahi D, Taylor CM. Migration tactics and connectivity of a Nearctic-Neotropical migratory shorebird. J Anim Ecol 2022; 91:819-830. [PMID: 35118651 DOI: 10.1111/1365-2656.13670] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 01/23/2022] [Indexed: 11/27/2022]
Abstract
During long-distance spring migrations, birds may rest and refuel at numerous stopover sites while minimizing the time to reach the breeding grounds. If habitat is limited along the migration route, pre-breeding birds optimize flight range by having longer stopovers at higher quality sites compared to poorer quality sites. Stopover duration also depends on distance remaining to breeding grounds, ecological barriers, and individual characteristics. We assessed spring migration tactics and connectivity of a Nearctic-Neotropical migratory shorebird, the semipalmated sandpiper (Calidris pusilla), at two sites with known relative habitat quality on the Northern Gulf of Mexico (NGOM) coast, the first land encountered after crossing the Gulf of Mexico (GOM). We used automated radio telemetry (Motus) to estimate stopover duration and probability of departure. Migration speed was estimated for individuals detected at subsequent receivers on the Motus Network. To measure migratory connectivity, we used morphometrics and the Motus network to assign general breeding regions. Additionally, feather stable isotope ratios of C and N provided coarse information about over-wintering regions. Stopover duration declined with higher fuel loads at capture as expected under a time-minimizing strategy. After accounting for fuel load, stopover duration was approximately 40% longer at the higher quality site. We found no detectable effect of age, sex, or breeding location on stopover behavior. Probability of departure was strongly affected by humidity and also by tailwind and weather conditions. Birds stopping at the higher-quality site had earlier apparent arrival to the breeding grounds. The Louisiana coast is an apparent stopover hub for this species, since the individuals were departing to range-wide breeding regions and isotope values suggested birds were also using widespread wintering regions. Our study shows how high-quality, coastal wetlands along the NGOM coast serve a critical role in the annual cycle of a migratory shorebird. Stopover behavior indicated that high quality habitat may be limited for this species during spring migration. As threats to the GOM coast increase, protection of these already limited wetlands is vitally important.
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Affiliation(s)
- John A Herbert
- Department of Ecology and Evolutionary Biology, Tulane University, 6823 St. Charles Ave, New Orleans, LA, USA, 70118
| | - David Mizrahi
- New Jersey Audubon Society, Cape May Bird Observatory Center for Research and Education, Cape May Court House, NJ, USA
| | - Caz M Taylor
- Department of Ecology and Evolutionary Biology, Tulane University, 6823 St. Charles Ave, New Orleans, LA, USA, 70118
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8
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Skinner AA, Ward MP, Souza‐Cole I, Wright JR, Thompson FR, Benson TJ, Matthews SN, Tonra CM. High spatiotemporal overlap in the non‐breeding season despite geographically dispersed breeding locations in the eastern whip‐poor‐will (
Antrostomus vociferus
). DIVERS DISTRIB 2022. [DOI: 10.1111/ddi.13477] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Aaron A. Skinner
- School of Environment and Natural Resources The Ohio State University Columbus Ohio USA
| | - Michael P. Ward
- Illinois Natural History Survey Prairie Research Institute University of Illinois Champaign Illinois USA
- Department of Natural Resources and Environmental Sciences University of Illinois Urbana Illinois USA
| | - Ian Souza‐Cole
- Illinois Natural History Survey Prairie Research Institute University of Illinois Champaign Illinois USA
| | - James R. Wright
- School of Environment and Natural Resources The Ohio State University Columbus Ohio USA
| | - Frank R. Thompson
- United States Forest ServiceNorthern Research Station Columbia Missouri USA
| | - Thomas J. Benson
- Illinois Natural History Survey Prairie Research Institute University of Illinois Champaign Illinois USA
- Department of Natural Resources and Environmental Sciences University of Illinois Urbana Illinois USA
| | - Stephen N. Matthews
- School of Environment and Natural Resources The Ohio State University Columbus Ohio USA
| | - Christopher M. Tonra
- School of Environment and Natural Resources The Ohio State University Columbus Ohio USA
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9
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Morrick ZN, Lilleyman A, Fuller RA, Bush R, Coleman JT, Garnett ST, Gerasimov YN, Jessop R, Ma Z, Maglio G, Minton CDT, Syroechkovskiy E, Woodworth BK. Differential population trends align with migratory connectivity in an endangered shorebird. CONSERVATION SCIENCE AND PRACTICE 2021. [DOI: 10.1111/csp2.594] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Affiliation(s)
- Zaine N. Morrick
- School of Biological Sciences University of Queensland Brisbane Queensland Australia
| | - Amanda Lilleyman
- Threatened Species Recovery Hub, National Environmental Science Program, Research Institute for Environment and Livelihoods Charles Darwin University Casuarina Northern Territory Australia
| | - Richard A. Fuller
- School of Biological Sciences University of Queensland Brisbane Queensland Australia
| | - Robert Bush
- Queensland Wader Study Group Brisbane Queensland Australia
- Australasian Wader Studies Group Melbourne Victoria Australia
| | | | - Stephen T. Garnett
- Threatened Species Recovery Hub, National Environmental Science Program, Research Institute for Environment and Livelihoods Charles Darwin University Casuarina Northern Territory Australia
- Queensland Wader Study Group Brisbane Queensland Australia
| | | | - Roz Jessop
- Australasian Wader Studies Group Melbourne Victoria Australia
- Victorian Wader Study Group Melbourne Victoria Australia
| | - Zhijun Ma
- Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Institute of Biodiversity Science, School of Life Sciences Fudan University Shanghai China
| | - Grace Maglio
- Australasian Wader Studies Group Melbourne Victoria Australia
| | - Clive D. T. Minton
- Australasian Wader Studies Group Melbourne Victoria Australia
- Victorian Wader Study Group Melbourne Victoria Australia
| | - Evgeny Syroechkovskiy
- All‐Russian Research Institute for Nature Conservation of the Ministry of Natural Resources and Environment/BirdsRussia Moscow Russia
| | - Bradley K. Woodworth
- School of Biological Sciences University of Queensland Brisbane Queensland Australia
- Queensland Wader Study Group Brisbane Queensland Australia
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10
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Schumm YR, Metzger B, Neuling E, Austad M, Galea N, Barbara N, Quillfeldt P. Year-round spatial distribution and migration phenology of a rapidly declining trans-Saharan migrant—evidence of winter movements and breeding site fidelity in European turtle doves. Behav Ecol Sociobiol 2021. [DOI: 10.1007/s00265-021-03082-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Abstract
Populations of migratory bird species have suffered a sustained and severe decline for several decades. Contrary to non-migratory species, understanding the causal mechanisms proves difficult (for migratory bird species) as underlying processes may operate across broad geographic ranges and stages of the annual cycle. Therefore, the identification of migration routes, wintering grounds, and stopover sites is crucial for the development of relevant conservation strategies for declining migrant bird species. We still lack fundamental data of the non-breeding movements for many migratory species, such as European turtle doves Streptopelia turtur, a trans-Saharan migrant. For this species, knowledge of non-breeding movements is mainly based on ringing data that are limited by a low recovery rate in Africa, and tracking studies with a strong bias towards individuals breeding in France. We used Argos satellite transmitters to obtain detailed year-round tracks and provide new insights on migration strategies and winter quarters, of turtle doves breeding in Central and Eastern Europe. The tracking data along with analysis of land cover data confirm previously assumed use of multiple wintering sites and the use of a wide range of forest and agricultural landscapes at the breeding grounds. Tracking data in combination with environmental parameters demonstrated that most environmental parameters and niche breadth differed between breeding and wintering grounds. “Niche tracking” was only observed regarding night-time temperatures. Furthermore, we provide evidence for breeding site fidelity of adult individuals and for home range size to increase with an increasing proportion of agricultural used areas.
Significance statement
The European turtle dove, a Palearctic-African migrant species, is one of the fastest declining birds in Europe. The rapid decline is presumed to be caused mainly by habitat modification and agricultural changes. Here, we represent data on migration strategies, flyways, and behavior on European breeding and African non-breeding sites of turtle doves breeding in Central and Eastern Europe equipped with satellite transmitters. Our results confirm the use of different migration flyways and reveal an indication for “niche switching” behavior in terms of environmental factors during the different annual phases. The migratory behaviors revealed by the tracking approach, e.g., prolonged stopovers during autumn migration in Europe overlapping with time of hunting activities, stopovers in North Africa during spring migration, or evidence for loop migration, are important protection-relevant findings, particularly for the Central-Eastern flyway, for which no tracking data has been analyzed prior to our study.
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11
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Shifting of the Migration Route of White-Naped Crane (Antigone vipio) Due to Wetland Loss in China. REMOTE SENSING 2021. [DOI: 10.3390/rs13152984] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In the last 15 years, the west population of white-naped crane (Antigone vipio) decreased dramatically despite the enhanced conservation actions in both breeding and wintering areas. Recent studies highlighted the importance of protecting the integrity of movement connectivity for migratory birds. Widespread and rapid landcover changes may exceed the adaptive capacity of migrants, leading to the collapse of migratory networks. In this study, using satellite tracking data, we modeled and characterized the migration routes of the white-naped crane at three spatial levels (core area, migratory corridor, and migratory path) based on the utilization distribution for two eras (1990s and 2010s) spanning 20 years. Our analysis demonstrated that the white-naped crane shifted its migratory route, which is supported by other lines of evidences. The widespread loss of wetlands, especially within the stopover sites, might have caused this behavioral adaptation. Moreover, our analysis indicated that the long-term sustainability of the new route is untested and likely to be questionable. Therefore, directing conservation effects to the new route might be insufficient for the long-term wellbeing of this threatened crane and large-scale wetland restorations in Bohai Bay, a critical stopover site in the East Asian-Australasian flyway, are of the utmost importance to the conservation of this species.
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12
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Somveille M, Bay RA, Smith TB, Marra PP, Ruegg KC. A general theory of avian migratory connectivity. Ecol Lett 2021; 24:1848-1858. [PMID: 34173311 DOI: 10.1111/ele.13817] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 04/19/2021] [Accepted: 05/03/2021] [Indexed: 01/13/2023]
Abstract
Birds exhibit a remarkable array of seasonal migrations. Despite much research describing migratory behaviour, the underlying forces driving how a species' breeding and wintering populations redistribute each year, that is, migratory connectivity, remain largely unknown. Here, we test the hypothesis that birds migrate in a way that minimises energy expenditure while considering intraspecific competition for energy acquisition, by developing a modelling framework that simulates an optimal redistribution of individuals between breeding and wintering areas. Using 25 species across the Americas, we find that the model accurately predicts empirical migration patterns, and thus offers a general explanation for migratory connectivity based on first ecological and energetic principles. Our model provides a strong basis for exploring additional processes underlying the ecology and evolution of migration, but also a framework for predicting how migration impacts local adaptation across seasons and how environmental change may affect population dynamics in migratory species.
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Affiliation(s)
- Marius Somveille
- Department of Biology, Colorado State University, Fort Collins, CO, USA.,Centre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment, University College London, London, UK
| | - Rachael A Bay
- Department of Evolution and Ecology, University of California, Davis, CA, USA
| | - Thomas B Smith
- Center for Tropical Research, Institute for the Environment and Sustainability, University of California, Los Angeles, CA, USA.,Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA, USA
| | - Peter P Marra
- Department of Biology and McCourt School of Public Policy, Georgetown University, DC, USA
| | - Kristen C Ruegg
- Department of Biology, Colorado State University, Fort Collins, CO, USA
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13
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Lin S, Li T, Liou C, Amarga AKS, Cabras A, Tseng H. Eggs survive through avian guts-A possible mechanism for transoceanic dispersal of flightless weevils. Ecol Evol 2021; 11:7132-7137. [PMID: 34188800 PMCID: PMC8216937 DOI: 10.1002/ece3.7630] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 04/02/2021] [Accepted: 04/09/2021] [Indexed: 11/11/2022] Open
Abstract
How flightless animals disperse to remote oceanic islands is a key unresolved question in biogeography. The flightless Pachyrhynchus weevils represent repetitive colonization history in West Pacific islands, which attracted our interests about how some weevils have successfully dispersed in the reverse direction against the sea current. Here, we propose endozoochory as a possible mechanism that the eggs of the weevils might be carried by embedded in the fruits as the food of frugivorous birds. In this study, Pachyrhynchus eggs were embedded in small pieces of persimmon fruits (Diospyros kaki) and fed to captive frugivorous birds. After digestion, 83%-100% eggs were retrieved from the feces of a bulbul (Hypsipetes leucocephalus) and two thrushes (Turdus chrysolaus). The retrieved eggs had hatching rates higher than 84%, which were not different from the control. In contrast, no egg was retrieved from the feces of the frugivorous pigeon (Treron sieboldii), which took a longer retention time in the guts. Our study identified that the eggs of Pachyrhynchus weevils are possible to be transported by internal digesting in some bird species.
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Affiliation(s)
- Si‐Min Lin
- School of Life ScienceNational Taiwan Normal UniversityTaipeiTaiwan
- Biodiversity ProgramTaiwan International Graduate ProgramAcademia SinicaTaipeiTaiwan
| | - Tsui‐Wen Li
- School of Life ScienceNational Taiwan Normal UniversityTaipeiTaiwan
| | - Chia‐Hsin Liou
- Department of BiologyNational Museum of Natural ScienceTaichungTaiwan
| | - Ace Kevin S. Amarga
- School of Life ScienceNational Taiwan Normal UniversityTaipeiTaiwan
- Biodiversity ProgramTaiwan International Graduate ProgramAcademia SinicaTaipeiTaiwan
| | - Analyn Cabras
- Coleoptera Research CenterUniversity of MindanaoDavao CityPhilippines
| | - Hui‐Yun Tseng
- Department of EntomologyNational Taiwan UniversityTaipeiTaiwan
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14
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Monti F, Robert A, Dominici JM, Sforzi A, Bagur RT, Navarro AM, Guillou G, Duriez O, Bentaleb I. Using GPS tracking and stable multi-isotopes for estimating habitat use and winter range in Palearctic ospreys. Oecologia 2021; 195:655-666. [PMID: 33475782 PMCID: PMC7940332 DOI: 10.1007/s00442-021-04855-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 01/08/2021] [Indexed: 12/01/2022]
Abstract
We used both satellite tracking and carbon, nitrogen and sulphur stable isotopic analysis (SIA) to infer wintering ecology and habitat use of the Corsican osprey Pandion haliaetus population. A control sample of feathers from 75 individuals was collected within the osprey’s northern hemisphere breeding range, to assess the SIA variability across habitat types. An experimental set of SIA on feathers of 18 Corsican adults was examined to infer wintering ground locations and habitat types used during the non-breeding period. We calibrated the SIA using GPS/GSM tracks of 12 Mediterranean adults’ movements as wintering site references. We found 50% of individuals were resident and the other half migrated. Ospreys spent the winter at temperate latitudes and showed a high plasticity in habitat selection spread over the Mediterranean basin (marine bays, coastal lagoons/marshland, inland freshwater sites). Complementary to GPS tracking, SIA is, at a broad geographical scale, a reliable method to determine whether ospreys overwinter in a habitat different from that of their breeding area. This study proved that the integration of SIA and GPS/GSM tracking techniques was effective at overcoming the intrinsic limits of each method and achieving greater information for basic ecological studies of migratory birds in aquatic environments.
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Affiliation(s)
- Flavio Monti
- Department of Physical Sciences, Earth and Environment, University of Siena, Via Mattioli 4, 53100, Siena, Italy.
| | - Aloїs Robert
- CEFE, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul Valéry Montpellier 3, 1919 Route de Mende, 34293, Montpellier, France
| | - Jean-Marie Dominici
- Réserve Naturelle Scandola, Parc Naturel Régional de Corse, 20245, Galeria, France
| | - Andrea Sforzi
- Maremma Natural History Museum, Strada Corsini 5, 58100, Grosseto, Italy
| | - Rafel Triay Bagur
- IME (Institut Menorquí d'Estudis), Camí des Castell 28, 07702, Maó, Spain
| | - Antoni Muñoz Navarro
- Grup Balear d'Ornitologia I Defensa de La Naturalesa (GOB), Manuel Sanchis Guarner 10, 07004, Palma de Mallorca, Spain
| | - Gaël Guillou
- Littoral, ENvironnement et SociétéS (LIENSS, UMR 7266), Université de La Rochelle, Bâtiment Marie Curie Avenue Michel Crépeau, 17042, La Rochelle Cedex 1, France
| | - Olivier Duriez
- CEFE, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul Valéry Montpellier 3, 1919 Route de Mende, 34293, Montpellier, France
| | - Ilham Bentaleb
- Université Montpellier - UMR 5554, ISEM C/C 065 Place Eugène Bataillon, 34095, Montpellier cedex 05, France
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15
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Howard C, Stephens PA, Pearce‐Higgins JW, Gregory RD, Butchart SH, Willis SG. Disentangling the relative roles of climate and land cover change in driving the long‐term population trends of European migratory birds. DIVERS DISTRIB 2020. [DOI: 10.1111/ddi.13144] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Affiliation(s)
| | | | - James W. Pearce‐Higgins
- British Trust for Ornithology Thetford, Norfolk UK
- Department of Zoology University of Cambridge Cambridge UK
| | - Richard D. Gregory
- RSPB Centre for Conservation Science The Lodge Bedord UK
- Department of Genetics, Evolution and Environment Centre for Biodiversity and Environment Research University College London London UK
| | - Stuart H.M. Butchart
- Department of Zoology University of Cambridge Cambridge UK
- BirdLife International Cambridge UK
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16
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Dorian NN, Lloyd-Evans TL, Reed JM. Non-parallel changes in songbird migration timing are not explained by changes in stopover duration. PeerJ 2020; 8:e8975. [PMID: 32477833 PMCID: PMC7243817 DOI: 10.7717/peerj.8975] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 03/24/2020] [Indexed: 11/20/2022] Open
Abstract
Shifts in the timing of animal migration are widespread and well-documented; however, the mechanism underlying these changes is largely unknown. In this study, we test the hypothesis that systematic changes in stopover duration—the time that individuals spend resting and refueling at a site—are driving shifts in songbird migration timing. Specifically, we predicted that increases in stopover duration at our study site could generate increases in passage duration—the number of days that a study site is occupied by a particular species—by changing the temporal breadth of observations and vise versa. We analyzed an uninterrupted 46-year bird banding dataset from Massachusetts, USA using quantile regression, which allowed us to detect changes in early-and late-arriving birds, as well as changes in passage duration. We found that median spring migration had advanced by 1.04 days per decade; that these advances had strengthened over the last 13 years; and that early-and late-arriving birds were advancing in parallel, leading to negligible changes in the duration of spring passage at our site (+0.07 days per decade). In contrast, changes in fall migration were less consistent. Across species, we found that median fall migration had delayed by 0.80 days per decade, and that changes were stronger in late-arriving birds, leading to an average increase in passage duration of 0.45 days per decade. Trends in stopover duration, however, were weak and negative and, as a result, could not explain any changes in passage duration. We discuss, and provide some evidence, that changes in population age-structure, cryptic geographic variation, or shifts in resource availability are consistent with increases in fall passage duration. Moreover, we demonstrate the importance of evaluating changes across the entire phenological distribution, rather than just the mean, and stress this as an important consideration for future studies.
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Affiliation(s)
| | | | - J Michael Reed
- Department of Biology, Tufts University, Medford, MA, USA
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17
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Reading RP, Azua J, Garrett T, Kenny D, Lee H, Paek WK, Reece N, Tsolmonjav P, Willis MJ, Wingard G. Differential movement of adult and juvenile Cinereous Vultures (Aegypius monachus) (Accipitriformes: Accipitridae) in Northeast Asia. JOURNAL OF ASIA-PACIFIC BIODIVERSITY 2020. [DOI: 10.1016/j.japb.2020.01.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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18
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Relationships Between the Spread of Pathogens and the Migratory Connectivity of European Wild Birds. FOLIA VETERINARIA 2020. [DOI: 10.2478/fv-2020-0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Among emerging infectious diseases, 75 % are zoonotic. Migratory birds are important to public health because they carry emerging zoonotic pathogens or infected arthropod vectors. Disease is an important factor in the evolution of avian migrations and patterns of migratory connectivity. Research suggests that pathogen densities and diseases may influence the evolution of migratory behaviour. During the annual life cycle, European migratory birds spend: 2—4 months at the breeding locality, approximately 6 months on the wintering grounds, and several months (3 and more) on migration routes. There are many factors which determine when and where an outbreak of a disease may occur. Therefore, a complete understanding of the avian migratory systems has a high priority in the prevention of future outbreaks.
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19
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Norevik G, Åkesson S, Artois T, Beenaerts N, Conway G, Cresswell B, Evens R, Henderson I, Jiguet F, Hedenström A. Wind-associated detours promote seasonal migratory connectivity in a flapping flying long-distance avian migrant. J Anim Ecol 2019; 89:635-646. [PMID: 31581321 DOI: 10.1111/1365-2656.13112] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 08/12/2019] [Indexed: 11/29/2022]
Abstract
It is essential to gain knowledge about the causes and extent of migratory connectivity between stationary periods of migrants to further the understanding of processes affecting populations, and to allow efficient implementation of conservation efforts throughout the annual cycle. Avian migrants likely use optimal routes with respect to mode of locomotion, orientation and migration strategy, influenced by external factors such as wind and topography. In self-powered flapping flying birds, any increases in fuel loads are associated with added flight costs. Energy-minimizing migrants are therefore predicted to trade-off extended detours against reduced travel across ecological barriers with no or limited foraging opportunities. Here, we quantify the extent of detours taken by different populations of European nightjars Caprimulgus europaeus, to test our predictions that they used routes beneficial according to energetic principles and evaluate the effect of route shape on seasonal migratory connectivity. We combined data on birds tracked from breeding sites along a longitudinal gradient from England to Sweden. We analysed the migratory connectivity between breeding and main non-breeding sites, and en route stopover sites just south of the Sahara desert. We quantified each track's route extension relative to the direct route between breeding and wintering sites, respectively, and contrasted it to the potential detour derived from the barrier reduction along the track while accounting for potential wind effects. Nightjars extended their tracks from the direct route between breeding and main non-breeding sites as they crossed the Mediterranean Sea-Sahara desert, the major ecological barrier in the Palaearctic-African migration system. These clockwise detours were small for birds from eastern sites but increased from east to west breeding longitude. Routes of the tracked birds were associated with partial reduction in the barrier crossing resulting in a trade-off between route extension and barrier reduction, as expected in an energy-minimizing migrant. This study demonstrates how the costs of barrier crossings in prevailing winds can disrupt migratory routes towards slightly different goals, and thereby promote migratory connectivity. This is an important link between individual migration strategies in association with an ecological barrier, and both spatially and demographic population patterns.
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Affiliation(s)
- Gabriel Norevik
- Department of Biology, Centre for Animal Movement Research, Lund University, Lund, Sweden
| | - Susanne Åkesson
- Department of Biology, Centre for Animal Movement Research, Lund University, Lund, Sweden
| | - Tom Artois
- Centre for Environmental Sciences, Research Group: Zoology, Biodiversity and Toxicology, Hasselt University, Diepenbeek, Belgium
| | - Natalie Beenaerts
- Centre for Environmental Sciences, Research Group: Zoology, Biodiversity and Toxicology, Hasselt University, Diepenbeek, Belgium
| | | | | | - Ruben Evens
- Centre for Environmental Sciences, Research Group: Zoology, Biodiversity and Toxicology, Hasselt University, Diepenbeek, Belgium.,Swiss Ornithological Institute, Sempach, Switzerland
| | | | - Frédéric Jiguet
- UMR7204 MNHN-CNRS-SU, Centre d'Ecologie et de Sciences de la Conservation, Paris, France
| | - Anders Hedenström
- Department of Biology, Centre for Animal Movement Research, Lund University, Lund, Sweden
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20
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Taylor CM. Effects of Natal Dispersal and Density-Dependence on Connectivity Patterns and Population Dynamics in a Migratory Network. Front Ecol Evol 2019. [DOI: 10.3389/fevo.2019.00354] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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21
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Phipps WL, López-López P, Buechley ER, Oppel S, Álvarez E, Arkumarev V, Bekmansurov R, Berger-Tal O, Bermejo A, Bounas A, Alanís IC, de la Puente J, Dobrev V, Duriez O, Efrat R, Fréchet G, García J, Galán M, García-Ripollés C, Gil A, Iglesias-Lebrija JJ, Jambas J, Karyakin IV, Kobierzycki E, Kret E, Loercher F, Monteiro A, Morant Etxebarria J, Nikolov SC, Pereira J, Peške L, Ponchon C, Realinho E, Saravia V, Sekercioğlu CH, Skartsi T, Tavares J, Teodósio J, Urios V, Vallverdú N. Spatial and Temporal Variability in Migration of a Soaring Raptor Across Three Continents. Front Ecol Evol 2019. [DOI: 10.3389/fevo.2019.00323] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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22
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van Bemmelen RSA, Kolbeinsson Y, Ramos R, Gilg O, Alves JA, Smith M, Schekkerman H, Lehikoinen A, Petersen IK, Þórisson B, Sokolov AA, Välimäki K, van der Meer T, Okill JD, Bolton M, Moe B, Hanssen SA, Bollache L, Petersen A, Thorstensen S, González-Solís J, Klaassen RHG, Tulp I. A Migratory Divide Among Red-Necked Phalaropes in the Western Palearctic Reveals Contrasting Migration and Wintering Movement Strategies. Front Ecol Evol 2019. [DOI: 10.3389/fevo.2019.00086] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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23
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Bird Satellite Tracking Revealed Critical Protection Gaps in East Asian⁻Australasian Flyway. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16071147. [PMID: 30935053 PMCID: PMC6479383 DOI: 10.3390/ijerph16071147] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 03/26/2019] [Accepted: 03/27/2019] [Indexed: 11/23/2022]
Abstract
Most migratory birds depend on stopover sites, which are essential for refueling during migration and affect their population dynamics. In the East Asian–Australasian Flyway (EAAF), however, the stopover ecology of migratory waterfowl is severely under-studied. The knowledge gaps regarding the timing, intensity and duration of stopover site usages prevent the development of effective and full annual cycle conservation strategies for migratory waterfowl in EAAF. In this study, we obtained a total of 33,493 relocations and visualized 33 completed spring migratory paths of five geese species using satellite tracking devices. We delineated 2,192,823 ha as the key stopover sites along the migration routes and found that croplands were the largest land use type within the stopover sites, followed by wetlands and natural grasslands (62.94%, 17.86% and 15.48% respectively). We further identified the conservation gaps by overlapping the stopover sites with the World Database on Protected Areas (PA). The results showed that only 15.63% (or 342,757 ha) of the stopover sites are covered by the current PA network. Our findings fulfil some key knowledge gaps for the conservation of the migratory waterbirds along the EAAF, thus enabling an integrative conservation strategy for migratory water birds in the flyway.
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24
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Kölzsch A, Müskens GJDM, Szinai P, Moonen S, Glazov P, Kruckenberg H, Wikelski M, Nolet BA. Flyway connectivity and exchange primarily driven by moult migration in geese. MOVEMENT ECOLOGY 2019; 7:3. [PMID: 30733867 PMCID: PMC6354378 DOI: 10.1186/s40462-019-0148-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 01/10/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND For the conservation and management of migratory species that strongly decrease or increase due to anthropological impacts, a clear delineation of populations and quantification of possible mixing (migratory connectivity) is crucial. Usually, population exchange in migratory species is only studied in breeding or wintering sites, but we considered the whole annual cycle in order to determine important stages and sites for population mixing in an Arctic migrant. METHODS We used 91 high resolution GPS tracks of Western Palearctic greater white-fronted geese (Anser A. albifrons) from the North Sea and Pannonic populations to extract details of where and when populations overlapped and exchange was possible. Overlap areas were calculated as dynamic Brownian bridges of stopover, nest and moulting sites. RESULTS Utilisation areas of the two populations overlapped only somewhat during spring and autumn migration stopovers, but much during moult. During this stage, non-breeders and failed breeders of the North Sea population intermixed with geese from the Pannonic population in the Pyasina delta on Taimyr peninsula. The timing of use of overlap areas was highly consistent between populations, making exchange possible. Two of our tracked geese switched from the North Sea population flyway to the Pannonic flyway during moult on Taimyr peninsula or early during the subsequent autumn migration. Because we could follow one of them during the next year, where it stayed in the Pannonic flyway, we suggest that the exchange was long-term or permanent. CONCLUSIONS We have identified long-distance moult migration of failed or non-breeders as a key phenomenon creating overlap between two flyway populations of geese. This supports the notion of previously suggested population exchange and migratory connectivity, but outside of classically suggested wintering or breeding sites. Our results call for consideration of moult migration and population exchange in conservation and management of our greater white-fronted geese as well as other waterfowl populations.
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Affiliation(s)
- A. Kölzsch
- Department of Migration and Immuno-Ecology, Max Planck Institute for Ornithology, Am Obstberg 1, 78315 Radolfzell, Germany
- Department of Biology, University of Konstanz, Universitätsstraße 10, 78464 Konstanz, Germany
- Institute for Wetlands and Waterbird Research e.V, Am Steigbügel 13, 27283 Verden (Aller), Germany
| | - G. J. D. M. Müskens
- Team Animal Ecology, Wageningen Environmental Research, Wageningen University & Research, Droevendaalsesteeg 3-3A, 6708 PB Wageningen, The Netherlands
| | - P. Szinai
- Balaton-felvidéki National Park Directorate, Kossuth utca 16, Csopak, 8229 Hungary
- Bird Ringing and Migration Study Group of BirdLife Hungary, Koltő utca 21, Budapest, 1121 Hungary
| | - S. Moonen
- Institute of Avian Research, An der Vogelwarte 21, 26386 Wilhelmshaven, Germany
| | - P. Glazov
- Institute of Geography, Russian Academy of Sciences, Staromonetnyi per. 29, 119017 Moscow, Russia
| | - H. Kruckenberg
- Institute for Wetlands and Waterbird Research e.V, Am Steigbügel 13, 27283 Verden (Aller), Germany
| | - M. Wikelski
- Department of Migration and Immuno-Ecology, Max Planck Institute for Ornithology, Am Obstberg 1, 78315 Radolfzell, Germany
- Department of Biology, University of Konstanz, Universitätsstraße 10, 78464 Konstanz, Germany
| | - B. A. Nolet
- Department of Animal Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg 10, 6708 PB Wageningen, The Netherlands
- Department of Theoretical and Computational Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
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25
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Howard C, Stephens PA, Tobias JA, Sheard C, Butchart SHM, Willis SG. Flight range, fuel load and the impact of climate change on the journeys of migrant birds. Proc Biol Sci 2019; 285:rspb.2017.2329. [PMID: 29467262 PMCID: PMC5832701 DOI: 10.1098/rspb.2017.2329] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 01/31/2018] [Indexed: 11/12/2022] Open
Abstract
Climate change is predicted to increase migration distances for many migratory species, but the physiological and temporal implications of longer migratory journeys have not been explored. Here, we combine information about species' flight range potential and migratory refuelling requirements to simulate the number of stopovers required and the duration of current migratory journeys for 77 bird species breeding in Europe. Using tracking data, we show that our estimates accord with recorded journey times and stopovers for most species. We then combine projections of altered migratory distances under climate change with models of avian flight to predict future migratory journeys. We find that 37% of migratory journeys undertaken by long-distance migrants will necessitate an additional stopover in future. These greater distances and the increased number of stops will substantially increase overall journey durations of many long-distance migratory species, a factor not currently considered in climate impact studies.
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Affiliation(s)
- Christine Howard
- Conservation Ecology Group, Department of Biosciences, Durham University, South Road, Durham, DH1 3LE, UK
| | - Philip A Stephens
- Conservation Ecology Group, Department of Biosciences, Durham University, South Road, Durham, DH1 3LE, UK
| | - Joseph A Tobias
- Department of Life Sciences, Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot, SL5 7PY, UK
| | - Catherine Sheard
- School of Biology, University of St Andrews, St Andrews, Fife KY16 9ST, UK
| | - Stuart H M Butchart
- BirdLife International, David Attenborough Building, Pembroke St., Cambridge, CB2 3QZ, UK.,Department of Zoology, University of Cambridge, Downing St, Cambridge, CB2 3EJ, UK
| | - Stephen G Willis
- Conservation Ecology Group, Department of Biosciences, Durham University, South Road, Durham, DH1 3LE, UK
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26
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Hill JM, Renfrew RB. Migratory patterns and connectivity of two North American grassland bird species. Ecol Evol 2019; 9:680-692. [PMID: 30680148 PMCID: PMC6342103 DOI: 10.1002/ece3.4795] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 11/05/2018] [Accepted: 11/12/2018] [Indexed: 11/10/2022] Open
Abstract
Effective management and conservation of migratory bird populations require knowledge and incorporation of their movement patterns and space use throughout the annual cycle. To investigate the little-known migratory patterns of two grassland bird species, we deployed 180 light-level geolocators on Grasshopper Sparrows (Ammodramus savannarum) and 29 Argos-GPS tags on Eastern Meadowlarks (Sturnella magna) at Konza Prairie, Kansas, USA, and six US Department of Defense (DoD) installations distributed across the species' breeding ranges. We analyzed location data from 34 light-level geolocators and five Argos-GPS tags attached for 1 year to Grasshopper Sparrows and Eastern Meadowlarks, respectively. Grasshopper Sparrows were present on the breeding grounds from mid-April through early October, substantially longer than previously estimated, and migrated on average ~2,500 km over ~30 days. Grasshopper Sparrows exhibited strong migratory connectivity only at a continental scale. The North American Great Lakes region likely serves as a migratory divide for Midwest and East Coast Grasshopper Sparrows; Midwest populations (Kansas, Wisconsin, and North Dakota; n = 13) largely wintered in Texas or Mexico, whereas East Coast populations (Maryland and Massachusetts, n = 20) wintered in the northern Caribbean or Florida. Our data from Eastern Meadowlarks provided evidence for a diversity of stationary and short- and long-distance migration strategies. By providing the most extensive examination of the nonbreeding movement ecology for these two North American grassland bird species to date, we refine information gaps and provide key insight for their management and conservation.
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27
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Sullivan JD, Takekawa JY, Spragens KA, Newman SH, Xiao X, Leader PJ, Smith B, Prosser DJ. Waterfowl Spring Migratory Behavior and Avian Influenza Transmission Risk in the Changing Landscape of the East Asian-Australasian Flyway. Front Ecol Evol 2018. [DOI: 10.3389/fevo.2018.00206] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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28
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Meattey D, McWilliams S, Paton P, Lepage C, Gilliland S, Savoy L, Olsen G, Osenkowski J. Annual cycle of White-winged Scoters (Melanitta fusca) in eastern North America: migratory phenology, population delineation, and connectivity. CAN J ZOOL 2018. [DOI: 10.1139/cjz-2018-0121] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Understanding full annual cycle movements of long-distance migrants is essential for delineating populations, assessing connectivity, evaluating crossover effects between life stages, and informing management strategies for vulnerable or declining species. We used implanted satellite transmitters to track up to 2 years of annual cycle movements of 52 adult female White-winged Scoters (Melanitta fusca (Linnaeus, 1758)) captured in the eastern United States and Canada. We used these data to document annual cycle phenology; delineate migration routes; identify primary areas used during winter, stopover, breeding, and molt; and assess the strength of migratory connectivity and spatial population structure. Most White-winged Scoters wintered along the Atlantic coast from Nova Scotia to southern New England, with some on Lake Ontario. White-winged Scoters followed four migration routes to breeding areas from Quebec to the Northwest Territories. Principal postbreeding molting areas were in James Bay and the St. Lawrence River estuary. Migration phenology was synchronous regardless of winter or breeding origin. Cluster analyses delineated two primary breeding areas: one molting area and one wintering area. White-winged Scoters demonstrated overall weak to moderate connectivity among life stages, with molting to wintering connectivity the strongest. Thus, White-winged Scoters that winter in eastern North America appear to constitute a single continuous population.
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Affiliation(s)
- D.E. Meattey
- Department of Natural Resources Science, University of Rhode Island, 1 Greenhouse Road, Kingston, RI 02881, USA
| | - S.R. McWilliams
- Department of Natural Resources Science, University of Rhode Island, 1 Greenhouse Road, Kingston, RI 02881, USA
| | - P.W.C. Paton
- Department of Natural Resources Science, University of Rhode Island, 1 Greenhouse Road, Kingston, RI 02881, USA
| | - C. Lepage
- Quebec Region, Canadian Wildlife Service, Environment and Climate Change Canada, Quebec, QC G1J 0C3, Canada
| | - S.G. Gilliland
- Atlantic Region, Canadian Wildlife Service, Environment and Climate Change Canada, Sackville, NB E4L 1G6, Canada
| | - L. Savoy
- Biodiversity Research Institute, 276 Canco Road, Portland, ME 04103, USA
| | - G.H. Olsen
- USGS Patuxent Wildlife Research Center, Laurel, MD 20708-4039, USA
| | - J.E. Osenkowski
- Rhode Island Department of Environmental Management, West Kingston, RI 02908, USA
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29
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Chabot AA, Hobson KA, Van Wilgenburg SL, Pérez GE, Lougheed SC. Migratory connectivity in the Loggerhead Shrike ( Lanius ludovicianus). Ecol Evol 2018; 8:10662-10672. [PMID: 30519396 PMCID: PMC6262747 DOI: 10.1002/ece3.4415] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 04/15/2018] [Accepted: 05/06/2018] [Indexed: 11/10/2022] Open
Abstract
AIM We combine genetic and stable isotope data to quantify migration patterns in Loggerhead Shrike (Lanius ludovicianus), a species of conservation concern in North America, to assess how connectivity differs and impacts population evolution, ecology, and conservation. LOCATION We sampled shrikes across the majority of their nonbreeding range, from the Atlantic Coast to the western United States east of the Rocky Mountains and throughout Mexico. METHODS Our study used a Bayesian framework using δ2Hf from a breeding season origin feather and nuclear genetic microsatellite markers to distinguish between co-occurring migratory and nonmigratory individuals on the wintering grounds and, for migrants, to assign individuals to a breeding ground origin and genetic group. RESULTS Migratory shrikes were present throughout the nonbreeding range but the proportion differed among sample areas. Four main wintering areas were identified. Connectivity ranged from weakly negative in birds wintering on the Atlantic Coast to strongly positive between wintering grounds in the southwestern United States and Mexico and northwestern breeding populations. Connectivity was weakest in L. l. migrans, and strongest in L. l. mexicanus and L. l. excubitorides. Although believed to be nonmigratory, long-distance movements of individuals were observed in L. ludovicianus and L. l. mexicanus. Our data support a pattern of chain migration, again most notable in the western half of the species nonbreeding range, and differential migration based on age. MAIN CONCLUSIONS Our study provides of one such of the first quantitative measures of migratory connectivity and is among the first studies of a short-distance migratory passerine in North America. The higher migratory connectivity among western, versus eastern populations, and less severe population declines attributable to habitat loss or reproductive success, may result in more localized and/or less severe limiting factors for western populations and more severe on the Atlantic coast and Mississippi Alluvial Valley wintering grounds.
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Affiliation(s)
- Amy A. Chabot
- Department of BiologyQueen's UniversityKingstonOntario
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30
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Ladin ZS, Van Nieuland S, Adalsteinsson SA, D’Amico V, Bowman JL, Buler JJ, Baetens JM, De Baets B, Shriver WG. Differential post-fledging habitat use of Nearctic-Neotropical migratory birds within an urbanized landscape. MOVEMENT ECOLOGY 2018; 6:17. [PMID: 30151198 PMCID: PMC6100711 DOI: 10.1186/s40462-018-0132-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 07/06/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Persistent declines in migratory songbird populations continue to motivate research exploring contributing factors to inform conservation efforts. Nearctic-Neotropical migratory species' population declines have been linked to habitat loss and reductions in habitat quality due to increasing urbanization in areas used throughout the annual cycle. Despite an increase in the number of studies on post-fledging ecology, generally characterized by the period between fledging and dispersal from natal areas or migration, contextual research linking post-fledging survival and habitat use to anthropogenic factors remains limited. METHODS Here, we examined habitat use of post-fledging habitat-generalist gray catbirds (Dumetella caroliniensis), and habitat-specialist wood thrushes (Hylocichla mustelina), up to 88 days after fledging within an urbanized landscape. These Neotropical migratory species share many life-history traits, exhibit differential degrees of habitat specialization, and co-occur in urbanized landscapes. Starting from daily movement data, we used time-integrated Brownian bridges to generate probability density functions of each species' probability of occurrence, and home range among 16 land cover classes including roads from the US Geological Survey National Land Cover Database for each species. RESULTS Habitat use differed between pre- and post-independence periods. After controlling for factors that influence habitat use (i.e., pre- or post-independence period, fate (whether individuals survived or not), and land cover class), we found that wood thrushes occupied home ranges containing six times more forest land cover than catbirds. In contrast, catbirds occupied home ranges containing twice the area of roads compared to wood thrushes. Wood thrushes had greater variance for area used (km2) among land cover classes within home ranges compared to catbirds. However, once fledglings achieved independence from parents, wood thrushes had lower variance associated with area used compared to catbirds. CONCLUSIONS Our findings support predictions that habitat-generalist gray catbirds spend more time in developed areas, less time in forest habitat, and use areas with more roads than the forest-specialist wood thrush. We found strong effects of pre- and post-independence periods on all of the response variables we tested. Species-specific habitat use patterns will likely be affected by projected increases in urbanization over the next several decades leading to further reductions in available forest habitat and increased road density, and will have important implications for the ecology and conservation of these birds.
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Affiliation(s)
- Zachary S. Ladin
- Department of Entomology and Wildlife Ecology, University of Delaware, Rm. 250 Townsend Hall, 531 South College Avenue, Newark, DE 19716 USA
| | - Steffie Van Nieuland
- Department of Data Analysis and Mathematical Modeling, Ghent University, Ghent, Belgium
| | | | - Vincent D’Amico
- US Forest Service, Northern Research Station, Newark, DE USA
| | - Jacob L. Bowman
- Department of Entomology and Wildlife Ecology, University of Delaware, Rm. 250 Townsend Hall, 531 South College Avenue, Newark, DE 19716 USA
| | - Jeffrey J. Buler
- Department of Entomology and Wildlife Ecology, University of Delaware, Rm. 250 Townsend Hall, 531 South College Avenue, Newark, DE 19716 USA
| | - Jan M. Baetens
- Department of Data Analysis and Mathematical Modeling, Ghent University, Ghent, Belgium
| | - Bernard De Baets
- Department of Data Analysis and Mathematical Modeling, Ghent University, Ghent, Belgium
| | - W. Gregory Shriver
- Department of Entomology and Wildlife Ecology, University of Delaware, Rm. 250 Townsend Hall, 531 South College Avenue, Newark, DE 19716 USA
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31
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Diverse migration strategies in hoopoes (Upupa epops) lead to weak spatial but strong temporal connectivity. Naturwissenschaften 2018; 105:42. [DOI: 10.1007/s00114-018-1566-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 05/24/2018] [Accepted: 05/25/2018] [Indexed: 10/28/2022]
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32
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Hsiung AC, Boyle WA, Cooper RJ, Chandler RB. Altitudinal migration: ecological drivers, knowledge gaps, and conservation implications. Biol Rev Camb Philos Soc 2018; 93:2049-2070. [DOI: 10.1111/brv.12435] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 05/14/2018] [Accepted: 05/17/2018] [Indexed: 11/28/2022]
Affiliation(s)
- An C. Hsiung
- Warnell School of Forestry and Natural Resources; University of Georgia; 180 E. Green Street, Athens GA 30602 U.S.A
| | - W. Alice Boyle
- Division of Biology; Kansas State University; 116 Ackert Hall Manhattan KS 66506-4901 U.S.A
| | - Robert J. Cooper
- Warnell School of Forestry and Natural Resources; University of Georgia; 180 E. Green Street, Athens GA 30602 U.S.A
| | - Richard B. Chandler
- Warnell School of Forestry and Natural Resources; University of Georgia; 180 E. Green Street, Athens GA 30602 U.S.A
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33
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Dominoni DM, Åkesson S, Klaassen R, Spoelstra K, Bulla M. Methods in field chronobiology. Philos Trans R Soc Lond B Biol Sci 2018; 372:rstb.2016.0247. [PMID: 28993491 DOI: 10.1098/rstb.2016.0247] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/08/2017] [Indexed: 11/12/2022] Open
Abstract
Chronobiological research has seen a continuous development of novel approaches and techniques to measure rhythmicity at different levels of biological organization from locomotor activity (e.g. migratory restlessness) to physiology (e.g. temperature and hormone rhythms, and relatively recently also in genes, proteins and metabolites). However, the methodological advancements in this field have been mostly and sometimes exclusively used only in indoor laboratory settings. In parallel, there has been an unprecedented and rapid improvement in our ability to track animals and their behaviour in the wild. However, while the spatial analysis of tracking data is widespread, its temporal aspect is largely unexplored. Here, we review the tools that are available or have potential to record rhythms in the wild animals with emphasis on currently overlooked approaches and monitoring systems. We then demonstrate, in three question-driven case studies, how the integration of traditional and newer approaches can help answer novel chronobiological questions in free-living animals. Finally, we highlight unresolved issues in field chronobiology that may benefit from technological development in the future. As most of the studies in the field are descriptive, the future challenge lies in applying the diverse technologies to experimental set-ups in the wild.This article is part of the themed issue 'Wild clocks: integrating chronobiology and ecology to understand timekeeping in free-living animals'.
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Affiliation(s)
- Davide M Dominoni
- Department of Animal Ecology, Netherlands Institute of Ecology, PO Box 50, 6700 AB, Wageningen, The Netherlands .,Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow G128QQ, UK
| | - Susanne Åkesson
- Centre for Animal Movement Research, Department of Biology, Lund University, Lund 22362, Sweden
| | - Raymond Klaassen
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen 9747 AG, The Netherlands
| | - Kamiel Spoelstra
- Department of Animal Ecology, Netherlands Institute of Ecology, PO Box 50, 6700 AB, Wageningen, The Netherlands
| | - Martin Bulla
- Department of Behavioural Ecology and Evolutionary Genetics, Max Planck Institute for Ornithology, Seewiesen 82319, Germany.,NIOZ Royal Netherlands Institute for Sea Research, Department of Coastal Systems, Utrecht University, PO Box 59, 1790 AB Den Burg, The Netherlands.,Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Prague 16521, Czech Republic
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34
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Knight SM, Bradley DW, Clark RG, Gow EA, Bélisle M, Berzins LL, Blake T, Bridge ES, Burke L, Dawson RD, Dunn PO, Garant D, Holroyd GL, Hussell DJT, Lansdorp O, Laughlin AJ, Leonard ML, Pelletier F, Shutler D, Siefferman L, Taylor CM, Trefry HE, Vleck CM, Vleck D, Winkler DW, Whittingham LA, Norris DR. Constructing and evaluating a continent‐wide migratory songbird network across the annual cycle. ECOL MONOGR 2018. [DOI: 10.1002/ecm.1298] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Samantha M. Knight
- Department of Integrative Biology University of Guelph Guelph Ontario N1G 2W1 Canada
| | - David W. Bradley
- Department of Integrative Biology University of Guelph Guelph Ontario N1G 2W1 Canada
- Bird Studies Canada Delta British Columbia V4K 3N2 Canada
| | - Robert G. Clark
- Environment and Climate Change Canada Saskatoon Saskatchewan S7N 0X4 Canada
| | - Elizabeth A. Gow
- Department of Integrative Biology University of Guelph Guelph Ontario N1G 2W1 Canada
| | - Marc Bélisle
- Département de Biologie Université de Sherbrooke Sherbrooke Quebec J1K 2R1 Canada
| | - Lisha L. Berzins
- Ecosystem Science and Management Program University of Northern British Columbia Prince George British Columbia V2N 4Z9 Canada
| | - Tricia Blake
- Alaska Songbird Institute Fairbanks Alaska 99708 USA
| | - Eli S. Bridge
- Oklahoma Biological Survey University of Oklahoma Norman Oklahoma 73019 USA
| | - Lauren Burke
- Department of Biology Dalhousie University Halifax Nova Scotia B3H 4R2 Canada
| | - Russell D. Dawson
- Ecosystem Science and Management Program University of Northern British Columbia Prince George British Columbia V2N 4Z9 Canada
| | - Peter O. Dunn
- Behavioral and Molecular Ecology Group Department of Biological Sciences University of Wisconsin Milwaukee Wisconsin 53201 USA
| | - Dany Garant
- Département de Biologie Université de Sherbrooke Sherbrooke Quebec J1K 2R1 Canada
| | | | | | - Olga Lansdorp
- Department of Biological Sciences Simon Fraser University Burnaby British Columbia V5A 1S6 Canada
| | - Andrew J. Laughlin
- Department of Environmental Studies UNC Asheville Asheville North Carolina 28804 USA
| | - Marty L. Leonard
- Department of Biology Dalhousie University Halifax Nova Scotia B3H 4R2 Canada
| | - Fanie Pelletier
- Département de Biologie Université de Sherbrooke Sherbrooke Quebec J1K 2R1 Canada
| | - Dave Shutler
- Department of Biology Acadia University Wolfville Nova Scotia B4P 2R6 Canada
| | - Lynn Siefferman
- Biology Department Appalachian State University Boone North Carolina 28608 USA
| | - Caz M. Taylor
- Department of Ecology and Evolutionary Biology Tulane University New Orleans Louisiana 70118 USA
| | | | - Carol M. Vleck
- Department of Ecology, Evolution and Organismal Biology Iowa State University Ames Iowa 50011‐1020 USA
| | - David Vleck
- Department of Ecology, Evolution and Organismal Biology Iowa State University Ames Iowa 50011‐1020 USA
| | - David W. Winkler
- Department of Ecology and Evolutionary Biology Museum of Vertebrates Cornell University Ithaca New York 14853 USA
- Lab of Ornithology Cornell University Ithaca New York 14853 USA
| | - Linda A. Whittingham
- Behavioral and Molecular Ecology Group Department of Biological Sciences University of Wisconsin Milwaukee Wisconsin 53201 USA
| | - D. Ryan Norris
- Department of Integrative Biology University of Guelph Guelph Ontario N1G 2W1 Canada
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35
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Meyburg BU, Bergmanis U, Langgemach T, Graszynski K, Hinz A, Börner I, Meyburg C, Vansteelant WMG. Orientation of native versus translocated juvenile lesser spotted eagles ( Clanga pomarina) on the first autumn migration. ACTA ACUST UNITED AC 2018; 220:2765-2776. [PMID: 28768749 PMCID: PMC5558239 DOI: 10.1242/jeb.148932] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 05/09/2017] [Indexed: 11/20/2022]
Abstract
The ontogeny of migration routines used by wild birds remains unresolved. Here we investigated the migratory orientation of juvenile lesser spotted eagles (LSE; Clanga pomarina) based on translocation and satellite tracking. Between 2004 and 2016, 85 second-hatched juveniles (Abels) were reared in captivity for release into the declining German population, including 50 birds that were translocated 940 km from Latvia. In 2009, we tracked 12 translocated juveniles, as well as eight native juveniles and nine native adults, to determine how inexperienced birds come to use strategic migration routes. Native juveniles departed around the same time as the adults and six of eight used the eastern flyway around the Mediterranean, which was used by all adults. In contrast, translocated juveniles departed on average 6 days before native LSEs, and five travelled southward and died in the central Mediterranean region. Consequently, fewer translocated juveniles (4/12) than native juveniles (7/8) reached Africa. We conclude that juvenile LSEs have a much better chance of learning the strategic southeastern flyway if they leave at an appropriate time to connect with experienced elders upon departure. It is not clear why translocated juveniles departed so early. Regardless, by the end of the year, most juveniles had perished, whether they were translocated (10/12) or not (6/8). The small number of surviving translocated juveniles thus still represents a significant increase in the annual productivity of the German LSE population in 2009.
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Affiliation(s)
- Bernd-U Meyburg
- BirdLife Germany (NABU), PO Box 330451, Berlin 14199, Germany
| | - Ugis Bergmanis
- Latvijas valsts meži, Vaiņodes iela 1, Rīga LV -1004, Latvia
| | - Torsten Langgemach
- Brandenburg State Bird Conservation Centre, Dorfstr. 34, Buckow, Nennhausen 14715, Germany
| | - Kai Graszynski
- Department of Biology, Free University Berlin, Schreberstr. 8 A, Berlin 14167, Germany
| | - Arno Hinz
- Agency of Forestry, Vietmannsdorfer Str. 39, Templin 17269, Germany
| | - Ingo Börner
- Veterinarian practice, Neuer Weg 5, Templin 17268, Germany
| | - Christiane Meyburg
- World Working Group on Birds of Prey, 31, Avenue du Maine, Paris 75015, France
| | - Wouter M G Vansteelant
- Theoretical and Computational Ecology, Inst. for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands.,Vansteelant Eco Research, Dijkgraaf 35, Bennekom 6721NJ, The Netherlands
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36
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Schlaich AE, Bouten W, Bretagnolle V, Heldbjerg H, Klaassen RHG, Sørensen IH, Villers A, Both C. A circannual perspective on daily and total flight distances in a long-distance migratory raptor, the Montagu's harrier, Circus pygargus. Biol Lett 2017; 13:rsbl.2017.0073. [PMID: 28615350 DOI: 10.1098/rsbl.2017.0073] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 05/23/2017] [Indexed: 11/12/2022] Open
Abstract
Long-distance migrants are particularly recognized for the distances covered on migration, yet little is known about the distances they cover during the rest of the year. GPS-tracks of 29 Montagu's harriers from breeding areas in France, The Netherlands and Denmark showed that harriers fly between 35 653 and 88 049 km yr-1, of which on average only 28.5% is on migration. Mean daily distances during migration were 296 km d-1 in autumn and 252 km d-1 in spring. Surprisingly, males' daily distances during breeding (217 km d-1) were close to those during migration, whereas breeding females moved significantly less (101 km d-1) than males. In terms of flight distance, the breeding season seemed nearly as demanding as migration periods for males. During the six winter months, both sexes moved less (114 and 128 km d-1 for females and males, respectively) than during migration. Harriers therefore covered shorter daily distances during winter which might allow birds to compensate for the more demanding phases of migration and breeding.
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Affiliation(s)
- Almut E Schlaich
- Dutch Montagu's Harrier Foundation, PO Box 46, 9679ZG Scheemda, The Netherlands .,Conservation Ecology Group, GELIFES, University of Groningen, PO Box 11103, 9700CC Groningen, The Netherlands.,Centre d'Etudes Biologiques de Chizé, UMR 7372, CNRS & Université de la Rochelle, 79360 Villiers-en-Bois, France
| | - Willem Bouten
- Computational Geo-Ecology, IBED, University of Amsterdam, PO Box 94248, 1090GE Amsterdam, The Netherlands
| | - Vincent Bretagnolle
- Centre d'Etudes Biologiques de Chizé, UMR 7372, CNRS & Université de la Rochelle, 79360 Villiers-en-Bois, France.,LTER 'Zone Atelier Plaine & Val de Sèvre', Centre d'Etudes Biologiques de Chizé, CNRS, 79360 Villiers-en-Bois, France
| | - Henning Heldbjerg
- DOF-BirdLife Denmark, Vesterbrogade 140, 1620 Copenhagen V, Denmark.,Department of Bioscience-Wildlife Ecology, Aarhus University, Grenåvej 14, 8410 Rønde, Denmark
| | - Raymond H G Klaassen
- Dutch Montagu's Harrier Foundation, PO Box 46, 9679ZG Scheemda, The Netherlands.,Conservation Ecology Group, GELIFES, University of Groningen, PO Box 11103, 9700CC Groningen, The Netherlands
| | - Iben H Sørensen
- DOF-BirdLife Denmark, Vesterbrogade 140, 1620 Copenhagen V, Denmark.,Danish Hunters' Association, Molsvej 34, 8410 Rønde, Denmark
| | - Alexandre Villers
- Centre d'Etudes Biologiques de Chizé, UMR 7372, CNRS & Université de la Rochelle, 79360 Villiers-en-Bois, France.,Unité Biostatistiques et Processus Spatiaux, INRA, Domaine Saint-Paul, Site Agroparc, 84914 Avignon Cedex 9, France
| | - Christiaan Both
- Conservation Ecology Group, GELIFES, University of Groningen, PO Box 11103, 9700CC Groningen, The Netherlands
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37
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Cohen EB, Hostetler JA, Hallworth MT, Rushing CS, Sillett TS, Marra PP. Quantifying the strength of migratory connectivity. Methods Ecol Evol 2017. [DOI: 10.1111/2041-210x.12916] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Emily B. Cohen
- Migratory Bird Center Smithsonian Conservation Biology Institute National Zoological Park Washington DC USA
| | - Jeffrey A. Hostetler
- Migratory Bird Center Smithsonian Conservation Biology Institute National Zoological Park Washington DC USA
- Fish and Wildlife Research Institute Florida Fish and Wildlife Conservation Commission St. Petersburg FL USA
| | - Michael T. Hallworth
- Migratory Bird Center Smithsonian Conservation Biology Institute National Zoological Park Washington DC USA
| | - Clark S. Rushing
- Migratory Bird Center Smithsonian Conservation Biology Institute National Zoological Park Washington DC USA
- Patuxent Wildlife Research Center U.S. Geological Survey Laurel MD USA
| | - T. Scott Sillett
- Migratory Bird Center Smithsonian Conservation Biology Institute National Zoological Park Washington DC USA
| | - Peter P. Marra
- Migratory Bird Center Smithsonian Conservation Biology Institute National Zoological Park Washington DC USA
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38
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Li X, Si Y, Ji L, Gong P. Dynamic response of East Asian Greater White-fronted Geese to changes of environment during migration: Use of multi-temporal species distribution model. Ecol Modell 2017. [DOI: 10.1016/j.ecolmodel.2017.06.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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39
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Kassara C, Gangoso L, Mellone U, Piasevoli G, Hadjikyriakou TG, Tsiopelas N, Giokas S, López-López P, Urios V, Figuerola J, Silva R, Bouten W, Kirschel ANG, Virani MZ, Fiedler W, Berthold P, Gschweng M. Current and future suitability of wintering grounds for a long-distance migratory raptor. Sci Rep 2017; 7:8798. [PMID: 28821735 PMCID: PMC5562895 DOI: 10.1038/s41598-017-08753-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 07/18/2017] [Indexed: 11/18/2022] Open
Abstract
Conservation of migratory species faces the challenge of understanding the ecological requirements of individuals living in two geographically separated regions. In some cases, the entire population of widely distributed species congregates at relatively small wintering areas and hence, these areas become a priority for the species’ conservation. Satellite telemetry allows fine tracking of animal movements and distribution in those less known, often remote areas. Through integrating satellite and GPS data from five separated populations comprising most of the breeding range, we created a wide habitat suitability model for the Eleonora’s falcon on its wintering grounds in Madagascar. On this basis, we further investigated, for the first time, the impact of climate change on the future suitability of the species’ wintering areas. Eleonora’s falcons are mainly distributed in the north and along the east of Madagascar, exhibiting strong site fidelity over years. The current species’ distribution pattern is associated with climatic factors, which are likely related to food availability. The extent of suitable areas for Eleonora’s falcon is expected to increase in the future. The integration of habitat use information and climatic projections may provide insights on the consequences of global environmental changes for the long-term persistence of migratory species populations.
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Affiliation(s)
- Christina Kassara
- Department of Biology, University of Patras, GR-26500, Patras, Greece.
| | - Laura Gangoso
- Computational Geo-Ecology Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, 1098 XH, Amsterdam, The Netherlands
| | - Ugo Mellone
- Vertebrates Zoology Research Group, CIBIO Research Inst., University of Alicante, ES-03690, San Vicente del Raspeig, Alicante, Spain
| | - Gvido Piasevoli
- Public Institute for the Protected Natural Values Management in the County of Split and Dalmatia, Prilaz braće Kaliterna 10, HR-21000, Split, Croatia
| | | | - Nikos Tsiopelas
- Hellenic Ornithological Society, Themistokleous str. 80, 10681, Athens, Greece
| | - Sinos Giokas
- Department of Biology, University of Patras, GR-26500, Patras, Greece
| | - Pascual López-López
- Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia, C/Catedrático José Beltrán 2, ES-46980, Paterna, Valencia, Spain
| | - Vicente Urios
- Vertebrates Zoology Research Group, CIBIO Research Inst., University of Alicante, ES-03690, San Vicente del Raspeig, Alicante, Spain
| | - Jordi Figuerola
- Department of Wetland Ecology, Estación Biológica de Doñana, CSIC, 41092, Seville, Spain
| | - Rafa Silva
- Department of Wetland Ecology, Estación Biológica de Doñana, CSIC, 41092, Seville, Spain
| | - Willem Bouten
- Computational Geo-Ecology Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, 1098 XH, Amsterdam, The Netherlands
| | | | - Munir Z Virani
- The Peregrine Fund, 5668 West Flying Hawk Lane, Boise, Idaho, 83709, USA
| | - Wolfgang Fiedler
- Max Planck Institute for Ornithology, Am Obstberg 1, D-78315, Radolfzell, Germany
| | - Peter Berthold
- Max Planck Institute for Ornithology, Am Obstberg 1, D-78315, Radolfzell, Germany
| | - Marion Gschweng
- Max Planck Institute for Ornithology, Am Obstberg 1, D-78315, Radolfzell, Germany.,Institute of Experimental Ecology, University of Ulm, Albert-Einstein-Allee 11, D-89069, Ulm, Germany.,Concepts for Conservation, Schäferweg 6, 89143, Blaubeuren, Germany
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40
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Lim SM, Geervliet M, Verhagen JH, Müskens GJDM, Majoor FA, Osterhaus ADME, Martina BEE. Serologic evidence of West Nile virus and Usutu virus infections in Eurasian coots in the Netherlands. Zoonoses Public Health 2017; 65:96-102. [PMID: 28688117 DOI: 10.1111/zph.12375] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Indexed: 11/29/2022]
Abstract
West Nile virus (WNV) and Usutu virus (USUV) are arboviruses that are maintained in enzootic transmission cycles between mosquitoes and birds and are occasionally transmitted to mammals. As arboviruses are currently expanding their geographic range and emerging in often unpredictable locations, surveillance is considered an important element of preparedness. To determine whether sera collected from resident and migratory birds in the Netherlands as part of avian influenza surveillance would also represent an effective source for proactive arbovirus surveillance, a random selection of such sera was screened for WNV antibodies using a commercial ELISA. In addition, sera of jackdaws and carrion crows captured for previous experimental infection studies were added to the selection. Of the 265 screened serum samples, 27 were found to be WNV-antibody-positive, and subsequent cross-neutralization experiments using WNV and USUV confirmed that five serum samples were positive for only WNV-neutralizing antibodies and seven for only USUV. The positive birds consisted of four Eurasian coots (Fulica atra) and one carrion crow (Corvus corone) for WNV, of which the latter may suggest local presence of the virus, and only Eurasian coots for USUV. As a result, the screening of a small selection of serum samples originally collected for avian influenza surveillance demonstrated a seroprevalence of 1.6% for WNV and 2.8% for USUV, suggesting that this sustained infrastructure could serve as a useful source for future surveillance of arboviruses such as WNV and USUV in the Netherlands.
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Affiliation(s)
- S M Lim
- Artemis One Health Research Foundation, Delft, the Netherlands
| | - M Geervliet
- Artemis One Health Research Foundation, Delft, the Netherlands.,Animal Sciences, Cell Biology and Immunology, Wageningen University, Wageningen, The Netherlands
| | - J H Verhagen
- Department of Viroscience, Erasmus Medical Center, Rotterdam, The Netherlands.,Centre for Ecology and Evolution for Microbial Model Systems Zoonotic Ecology and Epidemiology, Department of Biology and Environmental Science, Faculty of Health and Life Sciences, Linnaeus University, Kalmar, Sweden
| | - G J D M Müskens
- Wageningen Environmental Research (Alterra), Wageningen, The Netherlands
| | - F A Majoor
- Sovon Dutch Centre for Field Ornithology, Nijmegen, The Netherlands
| | - A D M E Osterhaus
- Artemis One Health Research Foundation, Delft, the Netherlands.,Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, Hannover, Germany
| | - B E E Martina
- Artemis One Health Research Foundation, Delft, the Netherlands.,Department of Viroscience, Erasmus Medical Center, Rotterdam, The Netherlands
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41
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Vansteelant WMG, Kekkonen J, Byholm P. Wind conditions and geography shape the first outbound migration of juvenile honey buzzards and their distribution across sub-Saharan Africa. Proc Biol Sci 2017; 284:20170387. [PMID: 28539514 PMCID: PMC5454264 DOI: 10.1098/rspb.2017.0387] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 05/02/2017] [Indexed: 11/20/2022] Open
Abstract
Contemporary tracking studies reveal that low migratory connectivity between breeding and non-breeding ranges is common in migrant landbirds. It is unclear, however, how internal factors and early-life experiences of individual migrants shape the development of their migration routes and concomitant population-level non-breeding distributions. Stochastic wind conditions and geography may determine whether and where migrants end up by the end of their journey. We tested this hypothesis by satellite-tagging 31 fledgling honey buzzards Pernis apivorus from southern Finland and used a global atmospheric reanalysis model to estimate the wind conditions they encountered on their first outbound migration. Migration routes diverged rapidly upon departure and the birds eventually spread out across 3340 km of longitude. Using linear regression models, we show that the birds' longitudinal speeds were strongly affected by zonal wind speed, and negatively affected by latitudinal wind, with significant but minor differences between individuals. Eventually, 49% of variability in the birds' total longitudinal displacements was accounted for by wind conditions on migration. Some birds circumvented the Baltic Sea via Scandinavia or engaged in unusual downwind movements over the Mediterranean, which also affected the longitude at which these individuals arrived in sub-Saharan Africa. To understand why adult migrants use the migration routes and non-breeding sites they use, we must take into account the way in which wind conditions moulded their very first journeys. Our results present some of the first evidence into the mechanisms through which low migratory connectivity emerges.
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Affiliation(s)
- W M G Vansteelant
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, PO Box 94248, 1090 GE Amsterdam, The Netherlands
- Vansteelant Eco Research, Dijkgraaf 35, 6721 NJ Bennekom, The Netherlands
| | - J Kekkonen
- Department of Biosciences, University of Helsinki, PO Box 65, 00014 Helsinki, Finland
| | - P Byholm
- Bioeconomy Research Team, Novia University of Applied Sciences, 10600 Ekenäs, Finland
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42
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Moore JD, Krementz DG. Migratory connectivity of american woodcock using band return data. J Wildl Manage 2017. [DOI: 10.1002/jwmg.21269] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Joseph D. Moore
- Arkansas Cooperative Fish and Wildlife Research Unit; Department of Biological Sciences, University of Arkansas; Fayetteville AR 72701 USA
| | - David G. Krementz
- U.S. Geological Survey; Arkansas Cooperative Fish and Wildlife Research Unit, Department of Biological Sciences, University of Arkansas; Fayetteville AR 72701 USA
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43
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English PA, Mills AM, Cadman MD, Heagy AE, Rand GJ, Green DJ, Nocera JJ. Tracking the migration of a nocturnal aerial insectivore in the Americas. BMC ZOOL 2017. [DOI: 10.1186/s40850-017-0014-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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44
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Schmaljohann H, Eikenaar C. How do energy stores and changes in these affect departure decisions by migratory birds? A critical view on stopover ecology studies and some future perspectives. J Comp Physiol A Neuroethol Sens Neural Behav Physiol 2017; 203:411-429. [PMID: 28332031 DOI: 10.1007/s00359-017-1166-8] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 03/08/2017] [Accepted: 03/08/2017] [Indexed: 12/01/2022]
Abstract
In birds, accumulating energy is far slower than spending energy during flight. During migration, birds spend, therefore, most of the time at stopover refueling energy used during the previous flight. This elucidates why current energy stores and actual rate of accumulating energy are likely crucial factors influencing bird's decision when to resume migration in addition to other intrinsic (sex, age) and extrinsic (predation, weather) factors modulating the decision within the innate migration program. After first summarizing how energy stores and stopover durations are generally determined, we critically review that high-energy stores and low rates of accumulating energy were significantly related to high departure probabilities in several bird groups. There are, however, also many studies showing no effect at all. Recent radio-tracking studies highlighted that migrants leave a site either to resume migration or to search for a better stopover location, so-called "landscape movements". Erroneously treating such movements as departures increases the likelihood of type II errors which might mistakenly suggest no effect of either trait on departure. Furthermore, we propose that energy loss during the previous migratory flight in relation to bird's current energy stores and migration strategy significantly affects its urge to refuel and hence its departure decision.
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Affiliation(s)
- Heiko Schmaljohann
- Institute of Avian Research "Vogelwarte Helgoland", An der Vogelwarte 21, 26386, Wilhelmshaven, Germany.
| | - Cas Eikenaar
- Institute of Avian Research "Vogelwarte Helgoland", An der Vogelwarte 21, 26386, Wilhelmshaven, Germany
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45
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Chapman JW. Honey buzzards don't always make a beeline. J Anim Ecol 2017; 86:173-175. [PMID: 28169446 DOI: 10.1111/1365-2656.12620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 11/29/2016] [Indexed: 11/27/2022]
Abstract
(a) European honey buzzards breeding in Western Europe primarily use soaring flight to make annual long-range migrations via the Strait of Gibraltar to winter in West Africa; this adult male was photographed on migration near Gibraltar. Photo: Javier Elloriaga. (b) Autumn migration routes of 12 satellite tagged adult European honey buzzards (colour-coded lines); compared with the shortest possible straight-line routes (dashed lines), most routes involved substantial westerly detours in Africa. Adapted from Vansteelant et al. (2016). (c) In contrast, Montagu's harriers predominantly use flapping flight during their migrations; this adult male is carrying a satellite transmitter. Photo: Theo van Kooten. (d) Autumn migration routes of 34 satellite tagged adult Montagu's harriers; migratory tracks more closely approached straight-line routes, and typically involved longer sea crossings, than seen in European honey buzzards. Adapted from Trierweiler et al. (). In Focus: Vansteelant, W.M.G., Shamoun-Baranes, J., van Manen, W., van Diermen, J. & Bouten, W. (2017) Seasonal detours by soaring migrants shaped by wind regimes along the East Atlantic Flyway. Journal of Animal Ecology, 86, 179-191. Migratory birds often make substantial detours from the shortest possible route during their annual migrations, which may potentially increase the duration and energetic cost of their journeys. Vansteelant et al. () investigate repeated migrations of adult European honey buzzards between the Netherlands and sub-Saharan Africa, and find that they make large westerly detours in Africa on both the spring and autumn routes. These detours allow migrants to capitalise on more favourable winds further along the route, thus reducing energy expenditure. Lifelong tracking studies will allow researchers to identify how migration routes have evolved to exploit predictable atmospheric and oceanic circulation patterns.
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Affiliation(s)
- Jason W Chapman
- Centre for Ecology and Conservation, Environment and Sustainability Institute, University of Exeter, Penryn, Cornwall, UK
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46
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Calderón L, Campagna L, Wilke T, Lormee H, Eraud C, Dunn JC, Rocha G, Zehtindjiev P, Bakaloudis DE, Metzger B, Cecere JG, Marx M, Quillfeldt P. Genomic evidence of demographic fluctuations and lack of genetic structure across flyways in a long distance migrant, the European turtle dove. BMC Evol Biol 2016; 16:237. [PMID: 27821052 PMCID: PMC5100323 DOI: 10.1186/s12862-016-0817-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 10/28/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Understanding how past climatic oscillations have affected organismic evolution will help predict the impact that current climate change has on living organisms. The European turtle dove, Streptopelia turtur, is a warm-temperature adapted species and a long distance migrant that uses multiple flyways to move between Europe and Africa. Despite being abundant, it is categorized as vulnerable because of a long-term demographic decline. We studied the demographic history and population genetic structure of the European turtle dove using genomic data and mitochondrial DNA sequences from individuals sampled across Europe, and performing paleoclimatic niche modelling simulations. RESULTS Overall our data suggest that this species is panmictic across Europe, and is not genetically structured across flyways. We found the genetic signatures of demographic fluctuations, inferring an effective population size (Ne) expansion that occurred between the late Pleistocene and early Holocene, followed by a decrease in the Ne that started between the mid Holocene and the present. Our niche modelling analyses suggest that the variations in the Ne are coincident with recent changes in the availability of suitable habitat. CONCLUSIONS We argue that the European turtle dove is prone to undergo demographic fluctuations, a trait that makes it sensitive to anthropogenic impacts, especially when its numbers are decreasing. Also, considering the lack of genetic structure, we suggest all populations across Europe are equally relevant for conservation.
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Affiliation(s)
- Luciano Calderón
- Department of Animal Ecology & Systematics, Justus Liebig University Giessen, Heinrich-Buff-Ring 82, Giessen, 35392, Germany.
| | - Leonardo Campagna
- Fuller Evolutionary Biology Program, Cornell Lab of Ornithology, 159 Sapsucker Woods Road, Ithaca, NY, 14850, USA
- Department of Ecology and Evolutionary Biology, Cornell University, 215 Tower Road, Ithaca, NY, 14853, USA
| | - Thomas Wilke
- Department of Animal Ecology & Systematics, Justus Liebig University Giessen, Heinrich-Buff-Ring 82, Giessen, 35392, Germany
| | - Hervé Lormee
- Unité Avifaune Migratrice, Office National de la Chasse et de la Faune Sauvage, Villiers en Bois, Chizé, 79360, France
| | - Cyril Eraud
- Unité Avifaune Migratrice, Office National de la Chasse et de la Faune Sauvage, Villiers en Bois, Chizé, 79360, France
| | - Jenny C Dunn
- School of Life Sciences, University of Lincoln, Joseph Banks Laboratories, Lincoln, LN6 7TS, UK
| | - Gregorio Rocha
- Department of Agro-forestry Engineering, University of Extremadura, Avda. Virgen del Puerto 2, Plasencia, Cáceres, 10600, Spain
| | - Pavel Zehtindjiev
- Bulgarian Academy of Sciences, Institute of Biodiversity and Ecosystem Research, 2 Gagarin Street, Sofia, 1113, Bulgaria
| | - Dimitrios E Bakaloudis
- Aristotle University of Thessaloniki, School of Forestry and Natural Environment, PO Box 241, Thessaloniki, 541 24, Greece
| | | | - Jacopo G Cecere
- Instituto Superiore per la Protezione e la Ricerca Ambientale, Via Ca' Fornacetta 9, Ozzano Dell'Emilia, (BO), 40064, Italy
| | - Melanie Marx
- Department of Animal Ecology & Systematics, Justus Liebig University Giessen, Heinrich-Buff-Ring 82, Giessen, 35392, Germany
| | - Petra Quillfeldt
- Department of Animal Ecology & Systematics, Justus Liebig University Giessen, Heinrich-Buff-Ring 82, Giessen, 35392, Germany
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Spatial and temporal movements in Pyrenean bearded vultures (Gypaetus barbatus): Integrating movement ecology into conservation practice. Sci Rep 2016; 6:35746. [PMID: 27779179 PMCID: PMC5078842 DOI: 10.1038/srep35746] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 10/03/2016] [Indexed: 11/21/2022] Open
Abstract
Understanding the movement of threatened species is important if we are to optimize management and conservation actions. Here, we describe the age and sex specific spatial and temporal ranging patterns of 19 bearded vultures Gypaetus barbatus tracked with GPS technology. Our findings suggest that spatial asymmetries are a consequence of breeding status and age-classes. Territorial individuals exploited home ranges of about 50 km2, while non-territorial birds used areas of around 10 000 km2 (with no seasonal differences). Mean daily movements differed between territorial (23.8 km) and non-territorial birds (46.1 km), and differences were also found between sexes in non-territorial birds. Daily maximum distances travelled per day also differed between territorial (8.2 km) and non-territorial individuals (26.5 km). Territorial females moved greater distances (12 km) than males (6.6 km). Taking into account high-use core areas (K20), Supplementary Feeding Sites (SFS) do not seem to play an important role in the use of space by bearded vultures. For non-territorial and territorial individuals, 54% and 46% of their home ranges (K90), respectively, were outside protected areas. Our findings will help develop guidelines for establishing priority areas based on spatial use, and also optimize management and conservation actions for this threatened species.
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48
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Vansteelant WMG, Shamoun-Baranes J, van Manen W, van Diermen J, Bouten W. Seasonal detours by soaring migrants shaped by wind regimes along the East Atlantic Flyway. J Anim Ecol 2016; 86:179-191. [PMID: 27757959 DOI: 10.1111/1365-2656.12593] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 09/12/2016] [Indexed: 11/30/2022]
Abstract
Avian migrants often make substantial detours between their seasonal destinations. It is likely some species do this to make the most of predictable wind regimes along their respective flyways. We test this hypothesis by studying orientation behaviour of a long-distance soaring migrant in relation to prevailing winds along the East Atlantic Flyway. We tracked 62 migratory journeys of 12 adult European Honey Buzzards Pernis apivorus with GPS loggers. Hourly fixes were annotated with local wind vectors from a global atmospheric model to determine orientation behaviours with respect to the buzzards' seasonal goal destinations. This enabled us to determine hot spots where buzzards overdrifted and overcompensated for side winds. We then determined whether winds along the buzzards' detours differed from winds prevailing elsewhere in the flyway. Honey Buzzards cross western Africa using different routes in autumn and spring. In autumn, they overcompensated for westward winds to circumvent the Atlas Mountains on the eastern side and then overdrifted with south-westward winds while crossing the Sahara. In spring, however, they frequently overcompensated for eastward winds to initiate a westward detour at the start of their journey. They later overdrifted with side winds north-westward over the Sahel and north-eastward over the Sahara, avoiding adverse winds over the central Sahara. We conclude that Honey Buzzards make seasonal detours to utilize more supportive winds further en route and thereby expend less energy while crossing the desert. Lifelong tracking studies will be helpful to elucidate how honey buzzards and other migrants learn complex routes to exploit atmospheric circulation patterns from local to synoptic scales.
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Affiliation(s)
- Wouter M G Vansteelant
- Computational Geo-ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, P.O. Box 94248, 1090 GE, Amsterdam, The Netherlands
| | - Judy Shamoun-Baranes
- Computational Geo-ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, P.O. Box 94248, 1090 GE, Amsterdam, The Netherlands
| | - Willem van Manen
- Treetop Foundation, Talmastraat 112, 9406 KN, Assen, The Netherlands
| | - Jan van Diermen
- Treetop Foundation, Talmastraat 112, 9406 KN, Assen, The Netherlands
| | - Willem Bouten
- Computational Geo-ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, P.O. Box 94248, 1090 GE, Amsterdam, The Netherlands
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Schlaich AE, Klaassen RHG, Bouten W, Bretagnolle V, Koks BJ, Villers A, Both C. How individual Montagu's Harriers cope with Moreau's Paradox during the Sahelian winter. J Anim Ecol 2016; 85:1491-1501. [DOI: 10.1111/1365-2656.12583] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Accepted: 08/01/2016] [Indexed: 11/28/2022]
Affiliation(s)
- Almut Ellinor Schlaich
- Dutch Montagu's Harrier Foundation; PO Box 46 9679ZG Scheemda The Netherlands
- Conservation Ecology Group; Groningen Institute for Evolutionary Life Sciences; University of Groningen; PO Box 11103 9700CC Groningen The Netherlands
- Centre d'Etudes Biologiques de Chizé; UMR 7372; CNRS & Université de la Rochelle; 79360 Villiers-en-Bois France
| | - Raymond H. G. Klaassen
- Dutch Montagu's Harrier Foundation; PO Box 46 9679ZG Scheemda The Netherlands
- Conservation Ecology Group; Groningen Institute for Evolutionary Life Sciences; University of Groningen; PO Box 11103 9700CC Groningen The Netherlands
| | - Willem Bouten
- Computational Geo-Ecology; Institute for Biodiversity and Ecosystem Dynamics; University of Amsterdam; PO Box 94248 1090GE Amsterdam The Netherlands
| | - Vincent Bretagnolle
- Centre d'Etudes Biologiques de Chizé; UMR 7372; CNRS & Université de la Rochelle; 79360 Villiers-en-Bois France
- LTER ‘Zone Atelier Plaine & Val de Sèvre’; Centre d'Etudes Biologiques de Chizé; CNRS; 79360 Villiers-en-Bois France
| | - Ben Johannes Koks
- Dutch Montagu's Harrier Foundation; PO Box 46 9679ZG Scheemda The Netherlands
| | - Alexandre Villers
- Centre d'Etudes Biologiques de Chizé; UMR 7372; CNRS & Université de la Rochelle; 79360 Villiers-en-Bois France
| | - Christiaan Both
- Conservation Ecology Group; Groningen Institute for Evolutionary Life Sciences; University of Groningen; PO Box 11103 9700CC Groningen The Netherlands
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50
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Maggini I, Metzger B, Voss M, Voigt CC, Bairlein F. Morphometrics and stable isotopes differentiate wintering populations of a migratory bird. MOVEMENT ECOLOGY 2016; 4:20. [PMID: 27486515 PMCID: PMC4970205 DOI: 10.1186/s40462-016-0085-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 07/27/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Describing migratory connectivity in mobile animals is crucial for understanding the selective pressures acting on different populations throughout their life cycle. Tracking single individuals has provided valuable data, but for most species the data available are still spurious and usually limited to a few individuals. Since different populations of migratory birds can be distinguished by a combination of morphometric measurements and the isotopic composition of their feathers, it is possible to measure these parameters on a large sample to differentiate populations. METHODS We studied northern wheatears, Oenanthe oenanthe, captured in their African wintering range and applied discriminant analyses on morphometric measurements and stable isotope signatures to determine whether birds found in different areas were distinguishable from each other. RESULTS Morphometric and isotopic measurements alone were not sufficient to discriminate between the birds of ssp. oenanthe from different areas in Africa. When combining the two measurements, however, assignment to the different groups became substantially more accurate. Following the discriminant analysis of morphometrics and δ(2)H, δ(13)C, and δ(15)N isotopes signatures, 19 of 20 oenanthe from Kenya, 15 of 20 oenanthe from Mali/Mauritania, and 19 of 20 oenanthe from Niger were assigned correctly to their wintering area. CONCLUSIONS Our results show that birds at different wintering sites can be distinguished from each other when using a combination of markers. We discuss the possible breeding origins of these wintering birds.
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Affiliation(s)
- Ivan Maggini
- Institute of Avian Research “Vogelwarte Helgoland”, Wilhelmshaven, Germany
- Konrad-Lorenz Institute of Ethology, University of Veterinary Medicine, Vienna, Austria
| | - Benjamin Metzger
- Institute of Avian Research “Vogelwarte Helgoland”, Wilhelmshaven, Germany
- BirdLife Malta, Xemxija, Malta
| | - Maren Voss
- Leibniz-Institute of Baltic Sea Research Warnemünde, IOW, Rostock, Germany
| | | | - Franz Bairlein
- Institute of Avian Research “Vogelwarte Helgoland”, Wilhelmshaven, Germany
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