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Annales de Limnologie - International Journal of Limnology

Volume 54 (2018) (not complete)


Are cyanobacteria total, specific and trait abundance regulated by the same environmental variables? 3

This study showed that, in absence of nutrient limitation, some variables such as temperature are relevant to all organization levels, whereas some others like light availability have an effect on temporal distribution patterns of the dominant species.

Published online: 04 January 2018
DOI: https://doi.org/10.1051/limn/2017030

Thermal response of Moroccan lakes to climatic warming: first results 2

Water temperature plays a primary role in controlling a wide range of physical, geochemical and ecological processes in lakes, with considerable influences on lake water quality and ecosystem functioning. In this work, we report on the ability of the one-dimensional lake model to simulate the water temperature of Moroccan Lakes, affected by climate change for the first time. During the study periods, two variables are studied, the epilimnion and metalimnion temperatures. The results show good agreement with water temperature observations that suggests that the predictive model can be used to obtain a first-order estimation of water temperature in Moroccan Lakes. Hence, it is possible to apply this model in other Moroccan Lakes to simulate the behavior of temperature and to investigate the potential future warming of the water column in Lakes, affected by climate change.

Published online: 04 January 2018
DOI: https://doi.org/10.1051/limn/2017029

Effect of bottom sediments on the nutrient and metal concentration in macrophytes of river-lake systems 1

Our research concerns functioning of the river-lake system through an analysis of factors affecting the assimilation of biogenes and metals by aquatic plants typical for such a system. The greatest effect on the accumulation of an excessive amount of substances like nutrients and heavy metals occurring in the water ecosystem of the river and lake system seems to be demonstrated by the properties of the bottom sediments, mainly their granulometric composition. On the other hand, it was demonstrated that aquatic plants can have an effect on the fraction size in sediments, particularly near the outlet of the river to the water body.The obtained results could contribute to the creation of controlled conditions favouring contamination capture, which could a ffect the advancement of knowledge concerning the functioning of freshwater aquatic ecosystems.

Published online: 04 January 2018
DOI: https://doi.org/10.1051/limn/2017028