金角河口(马尔马拉海)浮游植物群落及潜在有害物种的时空变异特征

IF 1.1 4区 生物学 Q3 MARINE & FRESHWATER BIOLOGY Journal of the Marine Biological Association of the United Kingdom Pub Date : 2023-07-24 DOI:10.1017/S0025315423000449
Sebahat Semin, S. Tas, Fuat Dursun
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引用次数: 0

摘要

摘要2018年10月至2019年9月,对金角湾(马尔马拉海)浮游植物群落和潜在有害物种的时空变异性以及一些环境因素进行了调查。在研究期间,共鉴定了148个浮游植物分类群。其中,硅藻(71个类群,48%)和甲藻(63个类群,42.5%)组成134个类群(90.5%),其他类群14个类群(9.5%)。研究区首次记录到17个物种。物种丰富度在10月份最高,而在8月份最低。物种多样性(H')随采样站的不同而变化。细胞丰度在春季和夏季高于秋季和冬季,尤其是在河口中上部。硅藻和裸藻的丰度在春季最高,而萝卜藻和隐藻的丰度则在夏季最高。温度与总丰度呈正相关(P<0.01),但与物种多样性(H')呈负相关性(P<0.01)。在本研究期间,共检测到12种已知具有潜在毒性的微藻。其中,研究区首次记录到亚历山大藻和漏斗藻。与前几年相比,上河口物种多样性和丰富度的增加,以及水华事件频率的降低,表明了本研究期间环境条件的变化。研究结果表明,浮游植物可以作为此类生态系统中环境条件变化的指标。
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Spatial–temporal variability of phytoplankton community and potentially harmful species in the Golden Horn Estuary (Sea of Marmara, Türkiye)
Abstract Spatial–temporal variability of phytoplankton community and potentially harmful species in the Golden Horn Estuary (Sea of Marmara) was investigated from October 2018 to September 2019 together with some environmental factors. A total of 148 phytoplankton taxa were identified during the study period. Among these, 134 taxa (90.5%) consisted of diatoms (71 taxa, 48%) and dinoflagellates (63 taxa, 42.5%), while 14 taxa (9.5%) were other groups. Seventeen species were recorded for the first time in the study area. Species richness was highest in October, while it was lowest in August. The species diversity (H') varied according to sampling stations. Cell abundances were higher especially in the middle and upper estuary in spring and summer than in autumn and winter. The abundance of diatoms and euglenophyceans was highest in spring, while the abundance of raphidophycean and cryptophycean was highest in summer. Temperature was correlated positively with total abundance (P < 0.01), but negatively with species diversity (H') (P < 0.01). Several dense algal blooms causing discolouration in surface water occurred in spring and summer. A total of 12 microalgae species known as potentially toxic were detected during this study period. Among these, dinoflagellates Alexandrium cf. tamarense and Dinophysis infundibulum were recorded for the first time in the study area. The increase in species diversity and richness in the upper estuary, and the decrease in frequency of bloom events compared with the previous years indicated the changes in environmental conditions in this study period. Findings showed that phytoplankton might be used as an indicator of the changing environmental conditions in such ecosystems.
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来源期刊
CiteScore
2.30
自引率
8.30%
发文量
68
审稿时长
3-8 weeks
期刊介绍: JMBA is an international journal, publishing original research on all aspects of marine biology. It includes pioneering work taking place today on major issues concerning marine organisms and their environment. Subjects covered include: ecological surveys and population studies of marine communities; physiology and experimental biology; taxonomy, morphology and life history of marine animals and plants; and chemical and physical oceanographic work. Included with 2010 online subscriptions: Marine Biodiversity Records.
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