Distribution of Boeckella poppei (Mrázek, 1901) (Copepoda: Calanoida) on the Livingston Island, Antarctica

• Main Authors: Evtimova, Vesela, Pandourski, Ivan, Kenderov, Lyubomir
• Format: Still Image
• Language: English
• Published: Zenodo 2021
• Subjects: Antarctica; Livingston Island; Boeckella poppei; expansion of distribution areal; Bulgarian Antarctic Base; Antarctic; The Antarctic; Austral; Glacial Lake; Hannah; Byers; Boeckella; Meredith; Byers peninsula; Smith Island; Hannah Point; Perunika Glacier; Antarc*; Ice; permafrost; Copepods
• Online Access: https://dx.doi.org/10.5281/zenodo.4646968; https://zenodo.org/record/4646968

Livingston Island is the second largest island of the South Shetland Archipelago, Maritime Antarctica. Freshwater fauna in the area is scarcely studied. Previous records are limited and include habitats, which are free of permanent ice or snow cover during the austral summer. The calanoid Boeckella poppei was firstly recorded from the island in the 1990s, from the Todorina buza Lake. More recently, the species was also recorded form freshwater lakes on the Byers Peninsula, Western Livingston Island. During the 28 th Bulgarian Antarctic Expedition, we confirmed the presence of B. poppei in the Todorina buza Lake. In addition, we recorded the calanoid in temporary pools (i) situated on the permafrost and formed after the retreat of the Perunika Glacier and (ii) at Hannah Point. In the newly- established habitats the species was very abundant. Our results suggest a considerable expansion in the distribution of B. poppei on the Livingston Island, likely owing to recent climate change and the resulting freeing of additional territories of permanent ice cover. 5th Balkan Scientific Conference on Biology, 15-19 April 2021, Plovdiv Bulgaria, Book of Abstracts, © Plovdiv University Press, 2021, eISBN 978-619-202-644-8 : {"references": ["Ivanov, L.L. (2017). Antarctica: Livingston Island and Smith Island. Scale 1:100000 topographic map. Manfred W\u00f6rner Foundation, ISBN\u00a0978-619-90008-3-0", "Meredith, M. et al. (2019) Polar Regions. In: P\u00f6rtner H.-O. et al. (eds) IPCC Special Report on the Ocean and Cryosphere in a Changing Climate", "Pandourski, I. & Chipev, N. (1999). Morphological variability in a Boeckella poppei Mrazek, 1901 (Crustacea: Copepoda) population from a glacial lake on the Livingston Island (the Antarctic). Bulgarian Antarctic Research: Life Sciences 2, 83-92.", "Toro, M. et al. (2007). Limnological characteristics of the freshwater ecosystems of Byers Peninsula, Livingston Island, in maritime Antarctica. Polar Biology 30, 635", "Walter, T.C. & Boxshall, G. (2021). World of Copepods Database. Boeckella Guerne & Richard, 1889. Accessed on 2021-03-20 through World Register of Marine Species at: http://marinespecies.org/aphia.php?p=taxdetails&id=346853"]}