The rise and fall of primary producers and consumers in a multiply-stressed shallow lake (Lake Qilu, China) over the last 200 years
The rise and fall of primary producers and consumers in a multiply-stressed shallow lake (Lake Qilu, China) over the last 200 years
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过去 200 年来多重压力的浅湖（中国齐鲁湖）初级生产者和消费者的兴衰
DOI：
10.1016/j.ecolind.2021.107891
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发表时间：
2021-10
影响因子：
6.9
通讯作者：
Chen Guangjie
中科院分区：
文献类型：
--
作者：
Klamt Anna-Marie;Qian Fuming;Hu Kui;Wang Jiaoyuan;Huang Linpei;Li Rui;Chen Guangjie
在这个多代理古研究中，初级生产者和消费者在一个大型浅水湖泊的人为干扰的反应进行了调查。总体而言，富营养化和水位变化（部分推断由bisaccate花粉粒）很好地反映在沉积速率的变化，色素，硅藻和枝藻物种组成和其他代理（如杆腔藻卵母细胞）。特别是盘星藻的相对丰度与P. boryanum/P. P.此外，在身体大小（即coenobia直径）ofPediastrum简单明显相关的阶段，低能见度所造成的湖泊筑坝在20世纪50年代和加速富营养化在20世纪90年代。在后期，强烈的藻类生长导致浑浊的条件下，这是由共同出现的Fragilaria crotonensis，Aulacoseira ambigua和A。granulata，绿色藻Staurastrum sp.以及枝角类的米氏花。这项研究强调了亚化石遗骸，这是经常发现的，例如，标准的枝藻分析（绿色藻类，如盘星藻属）。和十字星藻属Staurastrum spp.或双囊花粉粒），可以为重建过去的环境条件和生物反应提供有价值的信息。对淡水生态系统的这种更好和更全面的了解对于在迅速变化的世界中应对未来的挑战至关重要。
In this multi-proxy palaeo study, the response of primary producers and consumers to anthropogenic disturbances in a large shallow lake was investigated. Overall, eutrophication and water-level changes (partly inferred by bisaccate pollen grains) are well-reflected in changes in sedimentation rates of pigments, diatom and cladoceran species composition and other proxies (e.g. Rhabdocoela oocytes). In particular, the stepwise decrease in relative abundance ofPediastrum simplexcompared toP. boryanum/P. duplexproved to be a good indicator for eutrophication intensity. Furthermore, reductions in the body size (i.e. coenobia diameter) ofPediastrum simplexwere clearly related to phases of low visibility that were caused by lake damming in the 1950 s and by accelerating eutrophication in the 1990 s. During the latter period, strong algal growth led to turbid conditions, which are indicated by the co-occurrence of the diatomsFragilaria crotonensis,Aulacoseira ambiguaandA. granulata, the green algaeStaurastrumsp. as well as the cladoceranAnthalonacf.milleri. This study highlights that subfossil remains, which are often found in, for instance, standard cladoceran analysis (green algae such asPediastrumspp. andStaurastrumspp. or bisaccate pollen grains), can add valuable information to the reconstruction of past environmental conditions and biotic response. Such better and more holistic understanding of freshwater ecosystems is crucial to meet future challenges in a rapidly changing world.
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影响因子：
4.5
作者：
D. Titman;P. Kilham
通讯作者：
D. Titman;P. Kilham
影响因子：
1.6
作者：
P. Sims;D. Mann;L. Medlin
通讯作者：
P. Sims;D. Mann;L. Medlin
DOI：
10.1007/0-306-47670-3_15
发表时间：
2002
期刊：
--
影响因子：
--
作者：
M. Talbot
通讯作者：
M. Talbot
影响因子：
0.9
作者：
A. Ludikova
通讯作者：
A. Ludikova
影响因子：
2.6
作者：
C. Reynolds
通讯作者：
C. Reynolds