Stuckenietum subretusae -来自勒拿河三角洲南部(萨哈共和国(雅库特))的水生植被的新组合

Q4 Agricultural and Biological Sciences
N. Lashchinskiy, L. Kipriyanova
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Thickets of S. subretusa were found only at 4–30 cm water depths. The thickets are monospecies with projective cover from 35 to 80 % (Fig. 2). Single specimens of Tephroseris palustris (L.) Rchb. were met rarely, at 4–5 cm water depths. Part of the thickets was located on wet sand along the shallows of the channel. S. subretusa was not found on neighboring islands. Five geobotanical relevés were made within the flow according to the generally accepted methodology with georeferencing using 12-channel GPS in the WGS-84 coordinate system on sample plots of 10×10 m. The classification was carried out on the principles of the ecological-floristic approach (Westhoff, van der Maarel, 1973). Estimation of the species projective cover in Table is given according to the Brown-Blanquet scale (Becking, 1957): r — single; + — less than 1 %; 1 — 1–5 %; 2 — 6–25 %; 3 — 26–50 %; 4 — 51–75 %; 5 — 76–100 %. The syntaxon name is given in accordance with the International Code of Phytosociological Nomenclature (Theurillat et al., 2021). The described communities belong to the class Potamogetonetea Klika in Klika et Novák 1941, the order Potamogetonetalia Koch 1926, and the alliance Potamogetonion Libbert 1931. We consider these as a part of a new association. The ass. Stuckenietum subretusae ass. nov. (Table). Nomenclature type (holotypus) — relevé No. L21-108а (Table, relevé 3). Republic of Sakha (Yakutia), Bulunsky district, Sasyl-Ary Isl., shallow channel in the Lena River delta, in water (N 72.35989°, E 126.41968°), 07/20/2021. N. N. Lashchinskiy is an author. Diagnostic species of the association is Stuckenia subretusa (= Potamogeton subretusus). The association includes monospecies communities of Stuckenia subretusa, sometimes with a single presence of other species. It is possible that communities of this species are floristically richer in southerner regions. 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引用次数: 0

摘要

近环极地的亚北极种subretusa猪链球菌(Hagstr.)Holub是一种稀有物种,生长在雅库亚,主要生长在68°N以北的大河(Lena、Kolyma、Yana、Indigirka、Anabar)三角洲系统的湖泊和水库中(Bobrov, Mochalova, 2014, 2017;Egorova, 2016;Opredelitel’……,2020)。该物种在泰米尔半岛被列为南部冻土带平原部分和森林冻土带中最常见的物种(Pospelova, Pospelov, 2007),而在典型冻土带中则较为罕见(Polozova, Tikhomirov, 1971)。总的来说,这是一个相当罕见的物种。除了泰米尔半岛和雅库特之外,它还出现在布尔什米亚苔原、叶尼塞河河口、楚科奇半岛和阿拉斯加(Yurtsev et al., 2010;Bobrov et al., 2021)。一些作者认为subretusa是一个重要的分类单元(Kaplan, 2008;Konspekt…,2012)与S. vaginata (Turcz.)Holub。然而,这些分类群之间的形态和分子遗传差异后来被显示出来(Volkova et al., 2017)。研究还表明,S. subretusa主要分布在亚洲大河的下游和河口地区,主要分布在北纬68°以北,欧洲分布在北纬67°,而S. vaginata在雅库特分布的北纬64°,欧洲分布在北纬66°(Bobrov, Mochalova, 2014),因此这些物种在地理上是分开的。2021年7月,在对勒拿河三角洲南部岛屿的地理植物学调查中,在Sasyl-Ary岛上发现了S. subretusa的灌木丛。(图1)在总长度为2公里,宽度为130-150米,深度为4-5厘米至1.5米的浅流(通道)中,水流非常缓慢。底部基材是粉质砂。永久冻土层深度为2-3米。仅在4 ~ 30 cm水深处发现了沙棘灌丛。这些灌丛是单一物种,投影覆盖率在35%到80%之间(图2)。Rchb。在4-5厘米的水深很少见到。部分灌木丛位于沿河道浅滩的湿沙上。在邻近的岛屿上没有发现S. subretusa。根据普遍接受的方法,在10×10 m的样地上使用WGS-84坐标系下的12通道GPS进行地理参考,在流内进行了5个地学相关的测量。分类是根据生态-区系方法的原则进行的(Westhoff, van der Maarel, 1973)。表中物种投影盖度的估计是根据Brown-Blanquet尺度(Becking, 1957)给出的:r -单一;+ -小于1%;1 - 1 - 5 %;2 - 6 - 25%;3 - 26 - 50%;4 - 51 - 75%;5 - 76 - 100%。根据《国际植物社会学命名法》(Theurillat et al., 2021)给出句法名称。所描述的群落属于Klika et Novák 1941中的Potamogetonetea Klika纲,1926年的Potamogetonetalia Koch目和1931年的Potamogetonion Libbert联盟。我们认为这些是新协会的一部分。11 .猪臀草(Stuckenietum subretusae)。命名类型(全息图)-相关编号21-108(表,相关3).萨哈共和国(雅库特),布伦斯基区,萨希尔-阿列克谢。,勒拿河三角洲浅水河道,水体(北纬72.35989°,东经126.41968°),2021年7月20日。N. N. Lashchinskiy是一位作家。该协会的诊断种为亚种猪链球菌(=亚种猪链球菌)。这种联系包括猪链球菌的单种群落,有时与其他物种的单一存在。在南部地区,该物种群落的区系可能更丰富。它们在列拿河三角洲的其他地区(Nikolin等人,2017年)、卡坦噶河的泰米尔半岛(克拉斯诺亚尔斯克地区)(Pospelova, Pospelov, 2007年)以及科米共和国(Chemeris, Bobrov, 2020年)都有可靠的发现,它们的生产力为142至409克/平方米的空气干物质。总体上,种群分布范围明显与科米共和国北部、克拉斯诺亚尔斯克边疆区、俄罗斯雅库特、楚科奇自治区和美国阿拉斯加州一致。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Stuckenietum subretusae — new association of aquatic vegetation from the southern part of the Lena River delta (Republic of Sakha (Yakutia))
A nearly circumpolar hypoarctic species Stuckenia subretusa (Hagstr.) Holub is a rare species that grows in Yakuyia in lakes and reservoirs of deltaic systems of the large rivers (Lena, Kolyma, Yana, Indigirka, Anabar) mainly north of 68° N(Bobrov, Mochalova, 2014, 2017; Egorova, 2016; Opredelitel’…, 2020). The species is listed for Taymyr Peninsula as the most common in the plain part of the southern tundra and in the forest tundra (Pospelova, Pospelov, 2007) and as rarer in the typical tundra (Polozova, Tikhomirov, 1971). In general, this is a rather rare species. Besides the Taymyr Peninsula and Yakutia it occurs in the Bolshezemelskaya tundra, in the mouth of the Yenisey River, in Chukotka Peninsula and Alaska (Yurtsev et al., 2010; Bobrov et al., 2021). Stuckenia subretusa is a critical taxon associated by some authors (Kaplan, 2008; Konspekt…, 2012) with S. vaginata (Turcz.) Holub. However, both morphological and molecular genetic differences between these taxa were shown later (Volkova et al., 2017). It was also shown that S. subretusa is found in the lower reaches and estuarine areas of the large rivers in Asia, mainly north of 68° N, in Europe — of 67°, while the northern limit of the distribution of S. vaginata in Yakutia — 64°, in Europe — 66° (Bobrov, Mochalova, 2014), therefore these species are geographically separated. In July 2021, during a geobotanical survey of the islands of the southern part of the Lena River delta, thickets of S. subretusa were found on Sasyl-Ary Isl. (Fig. 1) in a shallow flow (channel) of 2 km total length, 130–150 m width and from 4–5 cm to 1.5 m depth with a very sluggish current. The bottom substrate is silty sands. Permafrost is 2–3 m depth. Thickets of S. subretusa were found only at 4–30 cm water depths. The thickets are monospecies with projective cover from 35 to 80 % (Fig. 2). Single specimens of Tephroseris palustris (L.) Rchb. were met rarely, at 4–5 cm water depths. Part of the thickets was located on wet sand along the shallows of the channel. S. subretusa was not found on neighboring islands. Five geobotanical relevés were made within the flow according to the generally accepted methodology with georeferencing using 12-channel GPS in the WGS-84 coordinate system on sample plots of 10×10 m. The classification was carried out on the principles of the ecological-floristic approach (Westhoff, van der Maarel, 1973). Estimation of the species projective cover in Table is given according to the Brown-Blanquet scale (Becking, 1957): r — single; + — less than 1 %; 1 — 1–5 %; 2 — 6–25 %; 3 — 26–50 %; 4 — 51–75 %; 5 — 76–100 %. The syntaxon name is given in accordance with the International Code of Phytosociological Nomenclature (Theurillat et al., 2021). The described communities belong to the class Potamogetonetea Klika in Klika et Novák 1941, the order Potamogetonetalia Koch 1926, and the alliance Potamogetonion Libbert 1931. We consider these as a part of a new association. The ass. Stuckenietum subretusae ass. nov. (Table). Nomenclature type (holotypus) — relevé No. L21-108а (Table, relevé 3). Republic of Sakha (Yakutia), Bulunsky district, Sasyl-Ary Isl., shallow channel in the Lena River delta, in water (N 72.35989°, E 126.41968°), 07/20/2021. N. N. Lashchinskiy is an author. Diagnostic species of the association is Stuckenia subretusa (= Potamogeton subretusus). The association includes monospecies communities of Stuckenia subretusa, sometimes with a single presence of other species. It is possible that communities of this species are floristically richer in southerner regions. These are reliably found in other parts of the Lena River delta (Nikolin et al., 2017), on Taimyr Peninsula (Krasnoyarsk Territory) in the Kha­tanga River (Pospelova, Pospelov, 2007), as well as in the Komi Republic (Chemeris, Bobrov, 2020), where their productivity is from 142 to 409 g/m2 of air-dry matter. In general, the association distribution area apparently coincides with the species range (northern regions of the Komi Republic, Krasnoyarsk Territory, Yakutia, Chukotka Autonomous District (Russia) and Alaska (USA).
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来源期刊
Rastitel''nost'' Rossii
Rastitel''nost'' Rossii Agricultural and Biological Sciences-Plant Science
CiteScore
1.20
自引率
0.00%
发文量
5
期刊介绍: The scientific journal Rastitel''nost'' Rossii is included in the Scopus database. Publisher country is Russia. The main subject areas of published articles are Ecology, Evolution, Behavior and Systematics, Plant Science, Общая биология.
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