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Brown Algae of the Genus Cystoseira in the Sea of Azov: Settling or Expansion of the Range?
Russian Journal of Biological Invasions ( IF 0.8 ) Pub Date : 2020-10-03 , DOI: 10.1134/s2075111720030108
O. V. Stepanyan

Abstract

Currently, the habitats of Cystoseira in the Sea of Azov and Kerch Strait are concentrated in the southern part of the Gulf of Taman on the eastern part of Tuzla, Cape Achillion, and the Kerch Peninsula—between Cape Khroni and Kazantip. It is shown that the main vector of Cystoseira settlement is directed to the southwestern part of the Sea of Azov, which is facilitated by the compensatory bottom current from the Black Sea, which at the entrance to the Sea of Azov from the Kerch Strait deviates to the west. In studies of 2014–2017, Cystoseira barbata was discovered in 2014 in the area of Cape Zyuk (village of Kyrortnoe) and in 2017 at Cape Chagani (village of Zolotoe) in the Kazantipsky Gulf. In expeditions of 2018 in the area of the actual Cape Kazantip, representatives of Cystoseira were not detected. Probably, the findings of Cystoseira at Cape Kazantip can be expected in the near future, but further progression of brown algae will be limited to loose soils. The conditions of the Sea of Azov are an ecological boundary of the range of the genus Cystoseira, and for these algae, pulsation of the range border is characteristic. Factors that cause the expansion of the range of algae of the genus Cystoseira in the Sea of Azov are an increase in salinity, transparency, and temperature of the seawater. The factors causing the narrowing of the Cystoseira range in the Sea of Azov are a decrease in salinity and water transparency and an increase in the number of severe winters with ice. Algae of the genus Cystoseira are good biological indicators for long-term observations of changes in the hydrological regime of the sea. But to consider them invaders in the Sea of Azov is hardly competent.



中文翻译:

亚速海中Cystoseira属的褐藻:沉降还是扩大范围?

摘要

目前,位于亚速海和赤海峡的Cystoseira的栖息地集中在塔兹拉东部,塔基拉海峡和刻赤半岛之间的塔曼湾南部,位于科罗尼角和喀山顶之间。结果表明,Cystoseira沉降的主要方向是亚速海的西南部分,黑海的补偿性底流促进了亚速海的西南方向,黑海的补偿底流从刻赤海峡进入亚速海的入口偏向西方。在2014–2017年的研究中,半胱氨酸半胱氨酸于2014年在祖鲁角(Kyrortnoe村)和2017年在喀山提夫斯基海湾的查加尼角(Zolotoe村)被发现。在实际海角Kazantip面积2018探险,代表囊链均未检出。也许可以在不久的将来在卡赞蒂普角发现Cystoseira的发现,但是褐藻的进一步发展将局限于松散的土壤。亚速海的条件是Cystoseira属范围的生态边界,对于这些藻类,范围边界的脉动是特征。导致Cystoseira属藻类范围扩大的因素亚速海中盐度,透明度和海水温度的升高。导致亚速海的Cystoseira范围变窄的因素是盐度和水透明度的降低以及严寒加冰的次数增加。Cystoseira属的藻类是长期观察海洋水文状况变化的良好生物学指标。但是考虑到他们在亚速海中的入侵者几乎没有能力。

更新日期:2020-10-04
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