Migration pattern of Yellow-throated buntings revealed by isotope-based geographic assignment

Choi, Chang‐Yong; Nam, Hyun-Young; Park, Jong‐Gil; Bing, Gi-Chang

doi:10.1080/13658816.2019.1670832

Cited by 9 publications

(14 citation statements)

References 37 publications

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“…Light-level geolocators (Aoki et al, 2020;Heim et al, 2020), collaborative tracking network systems, such as the Motus automated radio telemetry arrays (Taylor et al, 2017) and GPSbased tracking systems may all offer cost-effective means to fill knowledge gaps on the migration and distributions of landbird migrants in the EAF. These methods may be complemented by molecular approaches (Seki and Ogura, 2007;Aoki et al, 2020) and intrinsic markers, such as stable isotope signatures in tissues Choi et al, 2020b). For instance, genetic markers have been used to infer the breeding areas of migrating Ryukyu robins Larvivora komadori (Seki and Ogura, 2007).…”

Section: Gaps In Knowledge Of Migratory Routes and Connectivitymentioning

confidence: 99%

“…For instance, genetic markers have been used to infer the breeding areas of migrating Ryukyu robins Larvivora komadori (Seki and Ogura, 2007). Stable isotopes from feathers have been used to link breeding and non-breeding areas De Jong et al, 2019) and to determine migration patterns (e.g., leapfrog versus chain migration; Weng et al, 2014;Choi et al, 2020b). Stable isotope analysis can also provide missing data on the diets and molting patterns of migratory birds during stopover.…”

Section: Gaps In Knowledge Of Migratory Routes and Connectivitymentioning

confidence: 99%

“…Since 2010, growing interest in the ecology and conservation of migratory landbirds in the EAF has yielded fresh insights on their migration ecology and migratory connectivity (Yamaura et al, 2017;Heim et al, 2018bHeim et al, , 2020Choi et al, 2020b;Uemura et al, 2020), species-specific population declines (Tamada et al, 2014(Tamada et al, , 2017Kamp et al, 2015;Edenius et al, 2017;Choi et al, 2020a), and threats (Amano and Yamaura, 2007;Iqbal et al, 2014;Kamp et al, 2015). While large-bodied hawks and eagles (Accipitriformes) have traditionally been easier to study during migration (Higuchi et al, 2005;Reading et al, 2020) and at key bottleneck sites (Zalles and Bildstein, 2000;Yamazaki et al, 2012;DeCandido et al, 2015;Limparungpatthanakij et al, 2019), studies on migratory passerines and other landbirds are fast catching up thanks to emerging tracking technology and methods.…”

Section: Introductionmentioning

confidence: 99%

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The State of Migratory Landbirds in the East Asian Flyway: Distributions, Threats, and Conservation Needs

Yong¹,

Heim

Chowdhury

et al. 2021

Front. Ecol. Evol.

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With nearly 400 migratory landbird species, the East Asian Flyway is the most diverse of the world’s flyways. This diversity is a consequence of the varied ecological niches provided by biomes ranging from broadleaf forests to arctic tundra and accentuated by complex biogeographic processes. The distribution and migration ecology of East Asian landbirds is still inadequately known, but a recent explosion in the number of studies tracking the migration of raptors, cuckoos, kingfishers and passerines has greatly increased our knowledge about the stopover and wintering ecology of many species, and the migratory routes that link northeast Eurasia and the Asian tropics. Yet the East Asian Flyway also supports the highest number of threatened species among flyways. Strong declines have been detected in buntings (Emberizidae) and other long-distance migrants. While the conservation of migratory landbirds in this region has largely focused on unsustainable hunting, there are other threats, such as habitat loss and increased agro-chemical use driven directly by land cover change and climate-related processes. Important knowledge gaps to be addressed include (1) threats affecting species in different parts of their annual cycle, (2) range-wide population trends, (3) ecological requirements and habitat use during the non-breeding season, and (4) the conservation status of critical wintering sites (including understudied farming landscapes, such as rice fields) and migration bottlenecks along the flyway.

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Section: Gaps In Knowledge Of Migratory Routes and Connectivitymentioning

confidence: 99%

Section: Gaps In Knowledge Of Migratory Routes and Connectivitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The State of Migratory Landbirds in the East Asian Flyway: Distributions, Threats, and Conservation Needs

Yong¹,

Heim

Chowdhury

et al. 2021

Front. Ecol. Evol.

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“…For decades, migratory movements of birds have been studied by means of ring-recovery data (Baillie et al 2009 ). Advances in technology and chemistry provided tools for gathering essential information on individual movements and connectivity between breeding, wintering and stopover sites (Webster et al 2002 ; Trierweiler et al 2014 ; Choi et al 2020 ). Satellite (GPS) tracking reveals wintering grounds and the migratory routes (tracks) followed between breeding and non-breeding areas with high accuracy and precision (Phipps et al 2019 ; Sarà et al 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Using GPS tracking and stable multi-isotopes for estimating habitat use and winter range in Palearctic ospreys

et al. 2021

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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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“…However, threats to songbirds are less studied, assessed, and therefore understood in Asia [7], and little information is available on the changes to the communities and populations of Asian songbirds. This knowledge gap on the songbirds and threats is due to the diversity and complexity of habitat change patterns, migratory routes crossing jurisdictional boundaries and connecting different habitats in distant geographic regions, and, differently from waterbirds, the lack of systematic and consistent monitoring schemes in Asia [12].…”

Section: Introductionmentioning

confidence: 99%

Changes in Emberiza bunting communities and populations spanning 100 years in Korea

et al. 2020

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The rapid decline of a few Emberiza bunting species is increasing conservation concerns, especially in Asia. However, temporal changes in communities and populations of buntings, ones of the most common migratory songbirds in Korea, have not been quantitatively assessed. To understand how the status of buntings has changed over the past 100 years, we collated abundance data from museum collections and bird-banding records between 1910 and 2019. We also used presence-absence data for buntings collected by a nationwide census scheme between 1997 to 2012. Our analysis showed that bunting communities reconstructed from museum-specimen and bird-banding data were not significantly different; however, community composition differed over time. The Meadow (E. cioides), Yellowthroated (E. elegans), Black-faced (E. spodocephala), Rustic (E. rustica) and Chestnut Buntings (E. rutila), which are still common or were once common species, significantly affected the temporal changes in bunting community composition. There were no recent changes in the presence of Rustic and Chestnut Buntings since 1997, but they caused medium-term changes in the bunting community composition, suggesting that there was a sharp to moderate decline in their numbers in the past. The probability of the presence of six bunting species decreased annually, with the most prominent decline in two common breeders, the Meadow (-2.99%/year) and Yellow-throated Buntings (-1.82%/year). This finding suggests that breeding buntings in Korea are under high pressure, as are the migratory buntings. Moreover, despite its recent population decline, the Yellow-throated Bunting was still a major contributor to the community, suggesting that bunting diversity has also been deteriorating while bunting populations are shrinking. Long-term monitoring schemes across their distribution ranges, international cooperation for identifying major threats and key areas of conservation, and law enforcement against illegal hunting and habitat loss are strongly required to mitigate the ongoing decline of buntings in Korea and Asia.

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Migration pattern of Yellow-throated buntings revealed by isotope-based geographic assignment

Cited by 9 publications

References 37 publications

The State of Migratory Landbirds in the East Asian Flyway: Distributions, Threats, and Conservation Needs

The State of Migratory Landbirds in the East Asian Flyway: Distributions, Threats, and Conservation Needs

Using GPS tracking and stable multi-isotopes for estimating habitat use and winter range in Palearctic ospreys

Changes in Emberiza bunting communities and populations spanning 100 years in Korea

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