Influence of Climate Changes on the Structure of Summer Phytoplankton in a Forest Zone Lake (Raifskoe, Volga-Kama Nature Reserve)

IF 0.7 4区 环境科学与生态学 Q4 ECOLOGY Contemporary Problems of Ecology Pub Date : 2024-04-09 DOI:10.1134/s1995425524020082
O. V. Palagushkina, E. N. Unkovskaya, L. B. Nazarova
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Abstract

Climate change, which causes significant structural transformations of ecosystems, is becoming one of the most acute environmental problems of our time. Monitoring observations in protected areas, where anthropogenic impacts are minimal, reflect the effect of climate on natural communities. We have studied the change in the structure of summer phytoplankton in Lake Raifskoe (Volga-Kama Nature Reserve) for more than 20 years, as well as the relationship of these changes with environmental factors. This study has shown an increase in the proportion of dinophyte algae in the total biomass of summer phytoplankton in the lake, which is located in the forest zone. This change is more typical for the structure of lake communities in the forest-steppe zone. The leading role in the change in the structure of phytoplankton is played by climate, the air temperature of the warmest month (July) in particular. No effect of climate humidity (precipitation) on the phytoplankton community has been revealed. Our data show that current climate changes lead to rearrangements of phytoplankton communities, as a result of which the biomass structure of summer phytoplankton in the studied lake located in the forest zone of the Middle Volga region can acquire features of the structure of lake communities of the forest-steppe zone.

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气候变化对森林区湖泊(伏尔加-卡马自然保护区雷夫斯科湖)夏季浮游植物结构的影响
摘要气候变化导致生态系统结构发生重大变化,正在成为当代最尖锐的环境问题之一。在人为影响最小的保护区进行的监测观察反映了气候对自然群落的影响。20 多年来,我们一直在研究雷夫斯科湖(伏尔加-卡马自然保护区)夏季浮游植物结构的变化,以及这些变化与环境因素的关系。这项研究表明,位于森林地带的雷夫斯科湖夏季浮游植物总生物量中二叶藻类的比例有所增加。这种变化在森林草原地区的湖泊群落结构中较为典型。对浮游植物结构变化起主导作用的是气候,尤其是最暖月份(7 月)的气温。气候湿度(降水)对浮游植物群落没有影响。我们的数据显示,当前的气候变化导致浮游植物群落重新排列,因此,位于伏尔加河中游地区森林地带的研究湖泊的夏季浮游植物生物量结构可能具有森林草原地带湖泊群落结构的特征。
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来源期刊
Contemporary Problems of Ecology
Contemporary Problems of Ecology 环境科学-生态学
CiteScore
1.40
自引率
12.50%
发文量
54
审稿时长
6-12 weeks
期刊介绍: Contemporary Problems of Ecology is a multidisciplinary periodical that publishes original works on the following subjects: theoretical and methodical issues of ecology, regional aspects of ecology, regional ecological disasters, structure and functioning of ecosystems, anthropogenic transformation of ecosystems. All basic aspects of modern ecology, including the most complicated interactions between living organisms and their environment, are presented. Some of the journal issues are dedicated to global changes in biological diversity at various levels of organization (populations, species, ecosystems) principles and methods of nature conservation.
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