Supplementary Files
Keywords
algal flora
biodiversity inventory
checklist
biogeography
new records
Kuril Islands
Paramushir
Shumshu
Russian Far East
How to Cite
Abstract
This study provides the most comprehensive checklist of marine macroalgae to date for Paramushir and Shumshu Islands (Northern Kuril Islands), based on recent field collections and a critical review of historical records. The resulting flora comprises 192 species (33 Chlorophyta, 115 Rhodophyta, 44 Phaeophyceae), extending the known flora of Paramushir by 17 species and that of Shumshu by 37 species. A standout finding is the discovery of Alaria marginata, which represents a first record for the entire Russian Far Eastern seas. Furthermore, we report a dense population of Feditia simuschirensis near Paramushir, indicating this kelp is not endemic to Simushir Island and necessitating a revision of its biogeographic status. In total, 17 species are newly reported for the Northern Kuril Islands, significantly enhancing the understanding of North Pacific phytogeography.
References
Guiry MD, Guiry GM (2025) AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org (accessed on 26 November 2025)
Gusarova IS, Semkin BI (1986) Comparative analysis of macrophyte floras of some areas of the northern Pacific Ocean using graph-theoretical methods. Botanicheskiy zhurnal [Botanical Journal] 71(6): 781–789. [In Russian]
Gusarova IS, Sukhoveeva MV, Zhmakin AF (1993) Macrophyte algae. In: Hydrometeorology and hydrochemistry of the seas. St. Petersburg: Gidrometeoizdat 9(2): 145–155. [In Russian]
Klochkova NG (1993) Macrophyte marine algae. In: Rare plants of the Kamchatka region and their protection. Petropavlovsk-Kamchatsky: Kamchatka branch of the Far Eastern book publishing house. pp. 152–199. [In Russian]
Klochkova NG (1998) Macrophyte algae of the Far Eastern seas of Russia. Dissertation for Degree of Doctor of Biological Sciences. Petropavlovsk-Kamchatsky. 277 pp. [In Russian]
Klochkova NG, Demeshkina ZhV (1985) Algae Corallinaceae (Cryptonemiales, Rhodophyta) marium orientis extremi URSS. Clathromorphum Foslie emend. Adey. Novosti Sistematiki Nizshikh Rastenii (Novitates Systematicae Plantarum non Vascularium) 22: 72–85. https://www.binran.ru/files/journals/NSNR/1985_22/NSNR_1985_22_Kloczcova_Demeshkina.pdf [In Russian]
Klochkova NG, Trofimova TN (2003) Species composition of macrophyte marine algae of Paramushir Island (Northern Kuril Islands). Algologiya [Algology] 13(1): 83–94. [In Russian]
Klochkova TA, Klimova AV (2020) Genus Agarum (Laminariales, Phaeophyceae) in the Far Eastern seas: species composition and distribution of species. Proceed. ХXI Int. Sc. Conf. "Conservation of biodiversity of Kamchatka and coastal waters". Petropavlovsk-Kamchatsky: Kamchatpress. pp. 214–217. [In Russian]
Klochkova NG, Pisareva NA (2009) The genus Constantinea (Rhodophyta: Gigartinales) in the Far-Eastern seas of Russia. Marine Biology [Biologiya morya]. 35(3): 182–190. http://bm.dvo.ru/2009/n3/r_a003.htm [In Russian]
Kusakin OG, Kudryashov VA, Tarakanova TF, Shornikov EI (1974) Belt-forming flora and fauna groups of the Kuril Islands littoral. In: Flora and fauna of the Kuril Islands littoral. Novosibirsk: Nauka. pp. 5–75. [In Russian]
Lee IK (1977) Halosaccion minjaii spec. nov. (Rhodophyta, Rhodymeniales) from the Aleutian Islands. Phycologia 16: 245–252. https://doi.org/10.2216/i0031-8884-16-3-245.1
Lee IK (1978) Studies on Rhodymeniales from Hokkaido. Journal Faculty Science of Hokkaido University. Series 5 (Botany) 11(1): 1–194. http://hdl.handle.net/2115/26352
Masuda M (1982) A systematic study of the tribe Rhodomeleaea (Rhodomelaceae, Rhodophyta). Journal of the Faculty of Agriculture, Hokkaido Imperial University 12(4): 1–400.
Miyabe K, Nagai M (1932а) On Hedophyllum bongardianum (Post. et Rupr.) Yendo and five species of Laminaria from the North Kurils. Transactions of the Sapporo Natural History Society 12(4): 194–205.
Miyabe K, Nagai M (1932b) Pleuropterum paradiseum, a new genus and species of Alarieae from the northern Kurils. Proceedings of the Imperial Academy of Japan, Tokyo 8: 127–130. https://doi.org/10.2183/pjab1912.8.127
Miyabe K, Nagai M (1933) Laminariaceae of the Kuril Islands. Transactions of the Sapporo Natural History Society 13(2): 85–102.
Nagai M (1933) On a new species of Cymathaere from the Kuril Islands. Proceedings of the Imperial Academy of Japan, Tokyo 9: 531–534. https://doi.org/10.2183/pjab1912.9.531
Nagai M (1940) Marine algae of the Kuril Islands. I. Journal of the Faculty of Agriculture, Hokkaido Imperial University 46(1): 1–137.
Nagai M (1941) Marine algae of the Kuril Islands. II. Journal of the Faculty of Agriculture, Hokkaido Imperial University 46(2): 139–282.
Ogorodnikov VS (2007) Algal resources of the northern Kuril Islands. Dissertation for Degree of Candidate of Biological Sciences. Petropavlovsk-Kamchatsky. 174 pp. [In Russian]
Perestenko LP (1975) Red algae of the Far Eastern seas of the USSR. Lamellar cryptonemic algae (Cryptonemiales, Rhodophyta). Botanicheskiy zhurnal [Botanical Journal] 60(12): 1676–1689. [In Russian]
Perestenko LP (1994) Red algae of the Russian Far Eastern seas. St. Petersburg: Olga. 331 pp. [In Russian]
Postels A, Ruprecht F (1840) Illustrationes algarum in itinere circum orbem jussu imperatoris Nicolai I. Atque auspiciis navarchi Friderici Lütke annis 1826, 1827, 1828 et 1829 celoce Seniavin exsecuto in Oceano pacifico, inprimis septemtrionale ad littora rossica asiatico-americana collectarum. Petropoli [St. Petersburg]: Typis Eduardi Pratz. pp. [i–vi ], [i]– iv, 1–28 [1–2, index], [Latin:] [–iv], [1]– 22, [1–2, index]. 40 plates.
Tokida J (1954) The marine algae of Southern Saghalien. Memoirs of the Faculty of Fisheries, Hokkaido University 2(1): 1–264.
Vinogradova KL (1974) Ulvaceae (Chlorophyta) of the seas of the USSR. Leningrad: Nauka. 112 pp. [In Russian]
Yendo K (1903) Hedophyllum spirale, sp. nov., and its relation to Thalassiophyllum and Arthrothamnus. Botanical Magazine, Tokyo 17(201): 165–173. https://doi.org/10.15281/jplantres1887.17.201_165
Zinova AD, Perestenko LP (1974) List of algae of the tidal zone of the Kuril Islands. In: Flora and fauna of the tidal zone of the Kuril Islands. Novosibirsk: Nauka. pp. 332–338. [In Russian]
This work is licensed under a Creative Commons Attribution 4.0 International License.