First observations in 20 years of Brent Geese Branta bernicla wintering on the Shandong coast, China

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Published: Nov 14, 2024
Keywords:
Brent Geese, habitat status, field surveys, Sanggou Bay, wintering area

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Xiaotong Lv
Qingshan Zhao
Mengdan Fei
Yusuke Sawa
Toshio Ikeuchi
Guoxu Yu
Jin Zhang
Fanjuan Meng
Jing Zhang
Yong Zhang
Yanbo Xie
Lei Cao
Anthony D. Fox

Abstract

The East Asian Brent Goose Branta bernicla nigricans population is currently estimated at 5,000–8,700 individuals (just c. 1% of all Brent Geese B. bernicla globally) and is designated by the Conservation of Arctic Flora and Fauna (CAFF) as a priority species for conservation on the East Asian-Australasian Flyway (EAAF). Wintering numbers are concentrated in Japan (where c. 2,500 individuals occur, with an increasing trend), but numbers currently in China (estimated at 5,000 two decades ago) are unknown, emphasising the need for an updated assessment of their abundance and distribution there. A Brent Goose caught in Japan was tracked for five months as it wintered on Sanggou Bay in Shandong Province, confirming this area as a wintering site occupied by the population. Coastal and offshore surveys of Sanggou Bay in January 2023 and 2024 found up to 319 Brent Geese in offshore waters (124 in 2023; 319 in 2024), foraging in aquaculture areas > 2 km from the coastline. As these numbers exceed 1% of the East Asian Brent Goose population (i.e. > 65 individuals), Sanggou Bay qualifies as a site of international importance for the species. The Brent Geese were seen feeding on algal growth within Sweet Kelp Saccharina japonica and oyster (Ostreidae) aquaculture infrastructure and were rarely disturbed by kelp and oyster farmers (who are active mainly in summer), so were subject to almost zero human disturbance. A literature review of Brent Goose distribution and abundance during 1912–2024 suggested that the population historically wintered in the coastal waters of Shandong and Jiangsu Provinces, with up to 10,000 individuals recorded (before 2002), but reports were of < 10 birds present during 2002–2012. Despite our observations, and those documented since 2012, we suspect that fewer Brent Geese winter in China now than two decades ago. We recommend that the Sanggou Bay offshore area be protected and a national survey undertaken, both of the geese and their food resources (e.g. subtidal eelgrass Zostera sp. areas in the Yellow and Bohai Seas) to confirm their distribution, with long-term monitoring put in place for sites where they occur. Restoration of natural seagrass habitats around Changdao Island, Shandong Province (where the Bohai Sea and Yellow Sea meet), which supported the largest numbers historically, is also needed to attract Brent Geese to winter there again.

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How to Cite
Lv, X., Zhao, Q., Fei, M., Sawa, Y., Ikeuchi, T., Yu, G., … Fox, A. D. (2024). First observations in 20 years of Brent Geese Branta bernicla wintering on the Shandong coast, China. Wildfowl, 74, 84–98. Retrieved from https://tidsskrift.dk/Wildfowl/article/view/156372
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Vol. 74 (2024): Wildfowl 74
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Standard Papers

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References

Andreas, K. 2023. 25 Years Winter Waterbird Censuses of Korea. Andreas Kim, Mokpo, Korea. Available at https://www.andreas-kim.de/MoE/MoE.html (last accessed 3 August 2024).

BirdLife International. 2024. Species factsheet: Branta bernicla. BirdLife International, Cambridge, UK. Available at https://datazone.birdlife.org/species/factsheet/brent-goose-branta-bernicla (last accessed 21 May 2024).

Cao, L., Barter, M. & Lei, G. 2008. New Anatidae population estimates for eastern China: Implications for current flyway estimates. Biological Conservation 141: 2301–2309.

Cao, L., Meng, F. & Zhao, Q. 2021. Understanding effects of large-scale development on bird migration and habitats through cutting edge avian monitoring techniques. Bulletin of Chinese Academy of Sciences (English Version) 4: 436–447. [In Chinese.]

China Coastal Waterbird Census Group. 2015. China Coastal Waterbird Census Report (Jan. 2010–Dec. 2011). Hong Kong Bird Watching Society, Hong Kong, China. [In Chinese with English summary.]

China State Oceanic Administration (ed., SOA). 1991. China’s Coastal Embayments (V3Northern and Eastern Shandong Peninsula). China Ocean Press, Beijing, China. [In Chinese.]

Conservation of Arctic Flora and Fauna (CAFF). 2019. Arctic Migratory Birds Initiative (AMBI): Workplan 2019–2023. CAFF Strategies Series No. 30. Conservation of Arctic Flora and Fauna, Akureyri, Iceland.

Cornell Lab of Ornithology. 2022. eBird Basic Dataset. Version 2022.12. Cornell Lab of Ornithology, Ithaca, New York, USA. Available at https://ebird.org (last accessed 5 April 2024).

Daniels, B. L., Ward, D.H. & Black, J.M. 2019. Activity budgets, daily energy expenditure and energetic model of Black Brant Branta bernicla nigricans during winter and spring along the Lower Alaska Peninsula. Wildfowl 69: 134–159.

Elkinton, E., Lo, L. & Black, J.M. 2013. Black Brant Branta bernicla nigricans forage at both tides on Humboldt Bay, California, USA. Wildfowl (Special Issue No. 3): 90–103.

Fan, Q. 2001. Study on birds resources in Jiaodong Peninsula. Shandong Forestry Science and Technology 5: 31–33. [In Chinese.]

Fu, Y., Deng, J., Wang, H., Comber, A., Yang, W., Wu, W., You, S., Lin, Y. & Wang, K. 2021. A new satellite-derived dataset for marine aquaculture areas in China’s coastal region. Earth System Science Data 13: 1829–1842.

Fujii, K. 2017. Population size and distribution of Brent Geese in Japan (2014 to 2017). Bird Research 13: 69–77. [In Japanese with English summary.]

Gudmundsson, G.A., Benvenuti, S., Alerstam, T., Papi, F., Lilliendahl, K. & Åkesson, S. 1997. Examining the limits of flight and orientation performance: satellite tracking of brent geese migrating across the Greenland ice-cap. Proceedings of the Royal Society of London. Series B: Biological Sciences 261: 73–79.

Hassall, M. & Lane, S.J. 2005. Partial feeding preferences and the profitability of winter-feeding sites for brent geese. Basic and Applied Ecology 6: 559–570.

Hijmans R.J. 2023. geosphere: Spherical Trigonometry (Version 1.5-19). Available at https://github. com/rspatial/geosphere (last accessed 31 August 2024).

Huan, Q. 2023. The great changes and basic experience of China’s ecological civilization construction. Contemporary World and Socialism 6: 35–45. [In Chinese.]

Komdeur, J., Bertelsen, J. & Cracknell, G. (ed.). 1992. Manual for Aeroplane and Ship Surveys of Waterfowl and Seabirds. IWRB Special Publication No. 19, International Waterfowl and Wetlands Research Bureau, Slimbridge, UK, 1992.

Lewis, T.L., Ward, D.H., Sedinger, J.S., Reed, A., Derksen, D.V., Carboneras, C., Christie, D. & Kirwan, G.M. 2020. Brant (Branta bernicla), version 1.0. In S.M. Billerman (ed.), Birds of the World. Cornell Lab of Ornithology, Ithaca, New York, USA.

Li, Q., Jin, R., Ye, Z., Gu, J., Dan, L., He, J., Christakos, G., Agusti, S., Duarte, C.M., et al. 2022. Mapping seagrass meadows in coastal China using GEE. Geocarto International 37: 12602–12617.

Meng, F., Chen, L., Zhang, B., Li, C., Zhao, G., Batbayar, N., Natsagdorj, T., Damba, I., Liu, S., Wood, K., Cao, L. & Fox, A.D. 2020. The migratory Mute Swan Cygnus olor population in East Asia. Wildfowl (Special Issue No. 6): 73–96.

Ministry of Ecology and Environment of the People’s Republic of China & Chinese Academy of Sciences. 2023. China’s Red List of Biodiversity: Vertebrates (2020). Ministry of Ecology and Environment, Beijing, People’s Republic of China.

Moores, N. 2017. Birds and their conservation in Rason Special Economic Zone, Democratic People’s Republic of Korea. Forktail 33: 124–133.

Moores, N. 2018. DPRK record count of Brant Geese Branta bernicla. Birds Korea Blog. Available at https://www.birdskoreablog.org/?p=21327 (last accessed 30 April 2024).

Mundkur, T. & Langendoen, T. 2022. Report on the Conservation Status of Migratory Waterbirds of the East Asian–Australasian Flyway. First Edition. Wetlands International, Ede, the Netherlands.

Nacken, M. & Reise, K. 2000. Effects of herbivorous birds on intertidal seagrass beds in the northern Wadden Sea. Helgoland Marine Research 54: 87–94.

National Institute of Biological Resources. 2004. ’99–04 Winter Migratory Bird Census. National Institute of Biological Resources, Incheon, South Korea. [In Korean.]

National Institute of Biological Resources. 2005–2014. 2005–2014 Winter Migratory Bird Census. National Institute of Biological Resources, Incheon, South Korea. Annual Reports. [In Korean.]

National Institute of Biological Resources. 2014. Korean Red List of Threatened Species. Jisungsa, Seoul, Republic of Korea.

National Institute of Biological Resources. 2015. 2014–2015 Winter Migratory Bird Census. National Institute of Biological Resources, Incheon, South Korea. [In Korean.]

National Institute of Biological Resources. 2016. 2015–2016 Winter Migratory Bird Census. National Institute of Biological Resources, Incheon, South Korea. [In Korean.]

National Institute of Biological Resources. 2017. 2016–2017 Winter Migratory Bird Census. National Institute of Biological Resources, Incheon, South Korea. [In Korean.]

National Institute of Biological Resources. 2018. 2017–2018 Winter Migratory Bird Census of Korea. National Institute of Biological Resources, Incheon, South Korea. [In Korean.]

Nilsson, L. 2005. Wintering swans Cygnus spp. and coot Fulica atra in the Öresund, South Sweden, in relation to available food resources. Ornis Svecica 15: 13–21.

Sawa, Y., Tamura, C., Ikeuchi, T., Fujii, K., Ishioroshi, A., Shimada, T., Deng, S.T.X., Cao, L., Kim, H. & Ward, D. 2020. Migration routes and population status of the Brent Geese Branta Bernicla nigricans wintering in East Asia. Wildfowl (Special Issue No. 6): 244–266.

Sedinger, J.S., Riecke, T.V., Leach, A.G. & Ward, D.H. 2019. The black brant population is declining based on mark recapture. The Journal of Wildlife Management 83: 627–637.

Shimada, T., Kasahara, S., Kurechi, M., Suzuki, Y. & Higuchi, H. 2020. Frequency of kleptoparasitism by Black Brant Branta bernicla nigricans on Eurasian Coot Fulica atra differs between years and habitats. Wildfowl 70: 94–106.

Shimada, T., Yamada, Y., Hijikata, N., Tokita, K.-I., Uchida, K., Kurechi, M., Suginome, H., Suzuki, Y. & Higuchi, H. 2018. Utilisation of terrestrial habitat by Black Brant branta bernicla nigricans after the Great East Japan earthquake of 2011. Wildfowl 68: 172–182.

Signer, J., Fieberg, J. & Avgar, T. 2019. Animal movement tools (amt): R package for managing tracking data and conducting habitat selection analyses. Ecology and Evolution 9: 880–890.

Signer, J. & Fieberg, J.R. 2021. A fresh look at an old concept: home-range estimation in a tidy world. PeerJ 9: e11031.

Sun, X., Zhang, Y., Cao, M., Zhu, S. & Shan, K. 2015. Structure of waterfowl community in relation to habitat in the yellow River Delta Nature Reserve in autumn migratory and wintering periods. Journal of Ecology and Rural Environment 4: 514–521. [In Chinese with English summary.]

Syroechkovskiy Jr., E.E. 2006. Long-term declines in Arctic Geese populations in eastern Asia. In G.C. Boere, C.A. Galbraith & D.A. Stroud (eds.), Waterbirds Around the World, pp. 649–662. The Stationery Office, Edinburgh, UK.

Thieurmel, B. & Elmarhraoui, A. 2019. suncalc: compute sun position, sunlight phases, moon position and lunar phase. Available at https://github.com/datastorm-open/suncalc (last accessed 27 September 2023).

Vickery, J.A., Sutherland, W.J., Watkinson, A.R., Rowcliffe, J.M. & Lane, S.J. 1995. Habitat switching by dark-bellied brent geese branta b. bernicla (L.) in relation to food depletion. Oecologia 103: 499–508.

Wang, G. 2009. Rongcheng Mariculture Status and Standing Development Countermeasures. M.Sc. thesis, Ocean University of China. Qingdao, China. [In Chinese with English summary.]

Wang, L. 2010. Effects of the Different Maricultural Models on Sanggou Bay Ecosystem Services. M.Sc. thesis, First Institute of Oceanography, Ministry of Natural Resources of China. Qingdao, China. [In Chinese with English summary.]

Wang, L., Zhang, J., Liu, Y., Ma, Y., You, L., Zhao, Y., Liu, J. & Qi, Y. 2023. Temporal-spatial characteristics and ecological risk assessment of pollutants in surface sediment in Changdao County. Ocean Development and Management 11: 67–75. [In Chinese with English summary.]

Wang, X. & Chi, R. 2001. Endangered and threatened birds in Qingdao area. Shandong Forestry Science and Technology 6: 15–18. [In Chinese with English summary.]

Wetlands International. 2012. Waterbird Population Estimates, Fifth Edition. Summary Report. Wetlands International, Wageningen, the Netherlands. Available at wpe.wetlands.org (last accessed 25 February 2023)

Wetlands International. 2023a. Waterbird Population Boundaries. Wetlands International, Wageningen, the Netherlands. Available at https://wpp-review.wetlands.org/ (last accessed 2 January 2024).

Wetlands International. 2023b. Draft Species Count Totals by Country for the period 2019–2023. Wetlands International, Wageningen, the Netherlands. Available at https://iwc.wetlands.org/index.php/nattotals (last accessed 29 January 2024).

Wilson, R.E., Boyd, W.S., Sonsthagen, S.A., Ward, D.H., Clausen, P., Dickson, K.M., Ebbinge, B.S., Gudmundsson, G.A., Sage, G.K., Rearick, J.R., Derksen, D.V. & Talbot, S.L. 2024. Where east meets west: phylogeography of the high arctic North American brant goose. Ecology and Evolution 14: e11245.

Yang, Y. 2018. Assessment of the Influence of Large-Scale Aquaculture on Benthic Environment in Sanggou Bay. M.Sc. thesis, Dalian Ocean University, Dalian, China. [In Chinese with English summary.]