Abstract
<p>In freshwater ecosystems, water temperature plays as an environmental factor that regulates its structure and function. A research on the impacts of changes in temperature to the dynamics of the Phytoplankton community structure has been done. Data from nineteen-year period (1995 to 2013) were collected from Cirata Reservoir as an example of artificial tropical lake in Indonesia. The research aimed to determine the changes of water temperature as the impact of climate warming on the dynamics of phytoplankton community structure. Different measures such as species richness, diversity index, and abundance were measured in order to understand the changes of phytoplankton community structure. Trend analysis, linear regression, and correlation were applied to achieve our objective. The study revealed that changes in water temperature have affected the species richness, but not the diversity index and abundance of the phytoplankton. Bacilariophyceae and Cyanophyceae were found as two predominant phytoplankton classes in the lake with percentage of 48,45 and 41,43 respectively, assuming their capacity to adapt the new environment. This study suggests that climate warming implies changes of the freshwater ecosystems.</p>
Highlights
Freshwater ecosystem is a vital component for human being and for other creatures
This paper aims to describe the dynamics of phytoplankton community structure in Cirata Reservoir, a tropical man-made lake in Indonesia
Based on the report collected by Institute of Ecology (IoE) Universitas Padjadjaran, the current water quality in most of stations of upper Citarum Watershed is poor, and the pollution has gone beyond the maximum of allowable levels
Summary
Freshwater ecosystem is a vital component for human being and for other creatures. Water pollution and water scarcity is reported excessively occurred in several places. This freshwater problem hits the developing countries and the developed countries (Brown & Matlock, 2011). Changing in water temperature may affect the freshwater condition as it links directly to water cycle. The effects of climate warming on freshwater ecosystems become very crucial and need an urgent solution. Exacerbated eutrophication may occur as general effect of climate change in freshwater lentic system which alter food webs, change habitat availability and quality (Ficke et al, 2007)
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