Special Issue "Global Change Effects on Water Level and Salinity: Causes and Effects"

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Biodiversity and Functionality of Aquatic Ecosystems".

Deadline for manuscript submissions: 31 December 2022 | Viewed by 2513

Special Issue Editors

Prof. Dr. Erik Jeppesen
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Guest Editor
1. Department of Bioscience, Aarhus University, 8600 Silkeborg, Denmark
2. Limnology Laboratory, Department of Biological Sciences and Centre for Ecosystem Research and Implementation, Middle East Technical University, 06800 Ankara, Turkey
Interests: aquatic ecology; biological structure and interactions with the nutrient dynamics and climate in lakes; lake restoration; lake re-establishment; paleoecology; ecosystem modelling
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Meryem Beklioğlu
E-Mail Website
Guest Editor
Department of Biological Sciences and Centre for Ecosystem Research and Implementation, Middle East Technical University, 06531 Ankara, Turkey
Interests: aquatic ecology; structure and functioning of shallow lakes ecosystems; impacts of climate change; hydrological alterations and eutrophication on lakes ecosystem structure; functioning and diversity
Dr. Egor Zadereev
E-Mail Website
Guest Editor
Institute of Biophysics, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, 660036 Krasnoyarsk, Russia
Interests: saline lakes; environmental management; ecosystem services provided by saline lakes; chemical interactions in aquatic ecosystems; population ecology; zooplankton; science communication

Special Issue Information

Dear Colleagues,

The temperature and precipitation patterns are predicted to change markedly worldwide as a result of global change. The semi-arid and arid climate zone will experience much less net precipitation and runoff, while the north temperate zone is facing overall higher precipitation and runoff. It should also be noted that an increase in water abstraction is expected due to a global increase in demand for food in a growing population. These changes will lead to water level changes and the salinization of inland waters in the dry climate zones, while waters in areas with higher future precipitation or those affected by runoff from melting glaciers may show the reverse pattern. The magnitude of the future changes may have major effects on the functioning and biodiversity of inland aquatic ecosystems. Global warming also leads to rising sea levels and thus coastal seawater intrusions, further accelerated by an expected higher frequency and duration of extreme storms. However, little is known about the effect of changes in water level and salinity and their temporal variation on inland water ecosystems. To gain more insight into this field of research, we invite studies of water level and salinity effects on inland water ecosystems in all climate zones to this Special Issue. Results from experiments, time-series and space-for-time analysis, palaeoecological studies, meta-analyses and modelling are all welcomed.

Prof. Dr. Erik Jeppesen
Prof. Dr. Meryem Beklioğlu
Dr. Egor Zadereev
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • inland waters
  • salinity
  • water level
  • ecosystem structure and function
  • climate change
  • thresholds
  • resilience

Published Papers (2 papers)

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Research

Article
The Structuring Effects of Salinity and Nutrient Status on Zooplankton Communities and Trophic Structure in Siberian Lakes
Water 2022, 14(9), 1468; https://doi.org/10.3390/w14091468 - 04 May 2022
Cited by 1 | Viewed by 793
Abstract
Many continental saline lakes are under the effects of salinity increase and anthropogenic eutrophication exacerbated by global change. The response of the food web to these drivers of change is not straightforward. To understand the consequences of salinity and eutrophication interactive effects on [...] Read more.
Many continental saline lakes are under the effects of salinity increase and anthropogenic eutrophication exacerbated by global change. The response of the food web to these drivers of change is not straightforward. To understand the consequences of salinity and eutrophication interactive effects on the food web, we studied the seasonal dynamics of zooplankton and phytoplankton and water quality parameters in 20 lakes of different salinity (from freshwater to hypersaline) and nutrient status (from oligotrophic to eutrophic) located in southern Siberia. We observed a pronounced bottom-up effect of nutrients, which induced an increase in the biomass of phytoplankton and zooplankton and a decline in water quality. A significant decrease in the species abundance of zooplankton was observed at a threshold salinity of 3 g L−1 and the disappearance of fish at 10 g L−1. The top-down effect induced by salinity manifested itself in an increase in the biomass of zooplankton with the disappearance of fish, and in the change of the size distribution of phytoplankton particles with an increase in the proportion of cladocerans in the zooplankton. Even though we observed that with the salinity increase the food web in saline lakes transformed from three-trophic to two-trophic without fish, we conclude that in the salinity range from 10 to 20–30 g L−1 this transition in most cases will not increase the ability of zooplankton to control phytoplankton. Interactive effects of salinity and eutrophication strongly depend on the size and depth of the lake, as deep stratified lakes tend to have a better water quality with lower biomasses of both phyto- and zooplankton. Thus, the salinity per se is not the driver of the decline in water clarity or the uncontrolled development of phytoplankton. Moreover, for deep lakes, salinity may be a factor affecting the stability of stratification, which mitigates the consequences of eutrophication. Thus, small shallow lakes will be the most vulnerable to the joint effect of salinity increase and eutrophication with the degradation of ecosystem functioning and water quality at moderate salinities of 3–20 g L−1. Full article
(This article belongs to the Special Issue Global Change Effects on Water Level and Salinity: Causes and Effects)
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Article
Increased Water Abstraction and Climate Change Have Substantial Effect on Morphometry, Salinity, and Biotic Communities in Lakes: Examples from the Semi-Arid Burdur Basin (Turkey)
Water 2022, 14(8), 1241; https://doi.org/10.3390/w14081241 - 12 Apr 2022
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Abstract
Global warming and altered precipitation patterns are predicted to intensify the water loss in semi-arid and arid regions, and such regions in Turkey will be particularly affected. Moreover, water abstraction, not least for irrigation purposes, is expected to increase markedly, posing major threats [...] Read more.
Global warming and altered precipitation patterns are predicted to intensify the water loss in semi-arid and arid regions, and such regions in Turkey will be particularly affected. Moreover, water abstraction, not least for irrigation purposes, is expected to increase markedly, posing major threats to the water balance of the lakes and thus their biodiversity. Among the closed basins in Turkey, the Burdur Closed Basin (BCB), located in the southwest of Turkey, is expected to be most affected. The BCB includes several types of aquatic ecosystems which support high biodiversity, including one Ramsar site, six Important Bird Areas, and a considerable richness of native and endemic fish species. Therefore, it is essential to analyze the potential environmental impacts of climate change and increased water abstraction on BCB lakes and their biotic communities. Here, we combined historical data on ecosystems as well as meteorological, remote sensing, and ground-truth data to analyze the changes in the temperature and precipitation of the BCB, water surface areas, and land use, as well as the potential effects on waterbird and fish communities. We calculated the water budget to elucidate water availability in the basin over the last few decades and predicted future conditions based on rainfall and temperature forecasts using climate models. The Standardized Precipitation–Evapotranspiration Index (SPEI) was used to relate the water surface area to precipitation and temperature change in the basin. Crop-farming irrigation in the BCB has increased notably since 2004, leading to intensive water abstraction from the lakes and their inflows, as well as from ground water, to meet the increased demand for irrigation. The water abstraction from the lakes, inflows to the lakes, and the groundwater in the basin has increased the water loss in the catchment substantially. Remotely sensed data on lake surface areas showed a major shrinkage of shallow lakes in the last 40 years. Moreover, the largest lake in the basin, Lake Burdur, lost nearly half of its surface area, which is worrisome since the shallower areas are the most suitable for supporting high biodiversity. Climate models (CNRM-ESM2-1GCM for temperature and GFDL-ESM4-GCM for precipitation) suggest that from 2070, the BCB will face long-term, moderate-to-severe dry periods. This, and the increased demand for water for irrigation, along with climate change, may accelerate the drying of these lakes in the near future with devastating effects on the lake ecosystems and their biodiversity. Full article
(This article belongs to the Special Issue Global Change Effects on Water Level and Salinity: Causes and Effects)
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