Plankton characterization of alpine ponds: a case of study for the assessment of water quality in Serra da Estrela (Portugal)

IF 0.9 4区 环境科学与生态学 Q4 LIMNOLOGY Annales De Limnologie-international Journal of Limnology Pub Date : 2020-01-01 DOI:10.1051/limn/2020001
F. Martins, A. Moutinho, J. E. Marques, N. Formigo, Sara C. Antunes
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引用次数: 5

Abstract

Serra da Estrela is Portugal's mainland highest mountain, with distinctive geological, climatic and geomorphological characteristics which play a key role on surface and groundwater resources. These mountains have the largest set of glacial ponds of Portugal and are scarcely studied. Besides, there are concerns of possible impacts of the use of salts in road de-icing on ponds' biotic communities. This research intends to characterize the hydrology of five Mediterranean alpine ponds and assess their planktonic communities. The biotic index proposed by the Water Framework Directive for lentic systems was used to check its applicability to these systems. Sampling was conducted monthly from June to November 2015 alongside with hydrological characterization. Water parameters and nutrients' content were quantified. Phytoplankton and macrozooplankton were identified. Ponds' water level is controlled by precipitation (input) and evaporation, infiltration and streamflow (output). Ponds were in good ecological quality. However, the current ecological assessment tools proposed by the WFD for lentic systems do not fit alpine ponds, showing a gap in the current methods. Salts used for road de-icing did not impact the communities and the ecological state of ponds. Phytoplankton was dominated by Cyanobacteria, Dinophyceae and Bacillariophyceae; Cyclopoida was the most abundant zooplanktonic group. For macrozooplankton, RDA shows association between cladocerans and phosphorus content. Phosphorus changes promoted shifts in zooplankton, what may be of major concern from a conservation point of view, once alpine ponds and its species are still mostly unknown. Efforts should be done to develop tools to classify aquatic ecosystems from harsh environments.
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高寒池塘浮游生物特征:以葡萄牙埃斯特雷拉山水质评价为例
埃斯特雷拉山是葡萄牙大陆最高的山,具有独特的地质、气候和地貌特征,对地表水和地下水资源起着关键作用。这些山脉拥有葡萄牙最大的冰川池塘,很少被研究。此外,在道路除冰过程中使用盐可能对池塘生物群落产生影响。本研究拟对地中海五个高寒池塘的水文特征和浮游生物群落进行评价。使用水框架指令提出的生物指数来检查其对这些系统的适用性。从2015年6月到11月,每月进行一次采样,并进行水文表征。定量测定水分参数和养分含量。鉴定出浮游植物和大型浮游动物。池塘的水位由降水(输入)和蒸发、入渗和径流(输出)控制。池塘生态质量良好。然而,目前WFD提出的生态评价工具并不适合高寒池塘,显示出现有方法的差距。道路除冰盐对群落和池塘生态状况没有影响。浮游植物以蓝藻、藻门和硅藻门为主;Cyclopoida是最丰富的浮游动物类群。对于大型浮游动物,RDA显示了枝海动物与磷含量之间的相关性。磷的变化促进了浮游动物的变化,从保护的角度来看,这可能是一个主要的问题,因为高山池塘及其物种大部分仍然未知。应努力开发将水生生态系统从恶劣环境中分类的工具。
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来源期刊
CiteScore
2.20
自引率
0.00%
发文量
0
审稿时长
>12 weeks
期刊介绍: Annales de Limnologie - International Journal of Limnology publishes papers on the ecology of freshwater systems, ranging from studies of aquatic organisms, physical and chemical works which relate to the biological environment, to ecological applications and frameworks for water management directives. Main topics: Ecology of freshwater systems ; biodiversity, taxonomy, distribution patterns in space and time, biology of animals and plants ; experimental and conceptual studies which integrate laboratory and/or field work on physiology, population dynamics, biogeochemistry and nutrient dynamics, management, mathematical modelling ; techniques for sampling and chemical analyses, ecological applications, procedures which provide frameworks for environmental legislation.
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