Special Issue "Anthropogenic and Climatic Disturbances in Freshwater and Coastal Ecosystems: Interactive Impacts and Expected Threats"
Deadline for manuscript submissions: 31 December 2021.
In the last century, freshwater and coastal marine environments have been impacted by growing anthropogenic pressure, which is now globally spread. Discharges of nutrients, pollutants, sediments, and biogeochemical transformations originated by an intensive usage of ecosystem services, have often definitively changed the structure of these aquatic environments, even in regions where recent improvements of environmental management practices have mitigated pollution and eutrophication.
At the same time, these environments are currently exposed to direct and indirect disturbances originated by the climate change, as their status depends on the evolution of meteorological conditions, runoff, extreme events, hydrology, circulation, sea level, and orographic characteristics. Today, there is a growing body of knowledge about climate change at regional scales.
This Special Issue will explore current and expected interactions between anthropogenic pressures and climate change in freshwater and coastal ecosystems. A large variety of environments can be considered, from tropical to high-latitude systems, provided that they are analyzed as case studies that highlight the combination of anthropogenic and climatic disturbances. Multidisciplinary studies based on experimental activities, reanalysis of data-series, ecological modeling, and review and synthesis of the scientific information are encouraged.
Dr. Stefano Cozzi
Manuscript Submission Information
Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.
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 2000 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.
- hydrological regime
- water quality
- water resource management
- ecosystem services
- community dynamics
- ecosystem structure
- environmental indicators
- coastal zones
- river and lake ecosystems
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Title: Ecological importance of alkaline phosphatase activity in changing marine environmental conditions
Authors: Ingrid Ivančić 1,*; Romina Kraus 1; Mirjana Najdek 1; Stefano Cozzi 2,*
Affiliation: 1 Center for Marine Research, Ruđer Bošković Institute, G. Paliaga 5, HR-52210 Rovinj, Croatia.
2 CNR - ISMAR, Marine Sciences Institute, Area Science Park – Basovizza, SS 14, 34149 Trieste, Italy.
Abstract: Most of the coastal zones and continental shelves surrounding developed countries are subjected to large discharges of the nutrients, which primarily originate by the runoff of the continental waters. These inputs have significantly changed the biogeochemistry of these shallow marine environments, often causing an exponential rise of the frequency of coastal hypoxia, at least since the 1960’, as well as the dystrophic phenomena and an altered post-eutrophic conditions during the most recent decades. The Northern Adriatic continental shelf is an excellent example of such marine ecosystems. It is impacted by a large freshwater discharge that can reach, on annual scale, one third of the total seawater volume of this marine region, and by a discharge of continental nutrients that far exceeds their budgets into the sea. The most prominent characteristics of nutrient discharges in the Northern Adriatic Sea is the extreme overload of nitrogen compared to phosphorus, that makes it a clear example of phosphorus limited marine ecosystem. Moreover, the Northern Adriatic Sea is nowadays impacted by oscillations of the runoff and by a large seawater warming induced by climatic forcing. For these reasons, the analysis of the dynamics of phosphorus utilization and recycling is a key point for the assessment of the ecological status of this marine environment. Due to complex hydrodynamics and alternating eutrophic freshwater and oligotrophic middle Adriatic waters influence, it is expected that the region undergo different areal and temporal P-stress conditions. Microbes respond to P-stress inducing alkaline phosphatase activity (APA), enzymes that enable them to use organic phosphorus sources. Hence, APA response helps us to understand the severity of P-stress in different environmental conditions. Therefore, multiannual data of environmental parameters, nutrients, organic phosphorus and microbial biomass were analyzed (849 dataset collected during 2004-2013) to establish their influence on APA. Analyses were performed separately for waters saturated with oxygen where assimilation processes prevail, and undersaturated waters where regeneration processes prevail. The stratification period was compared to the mixing period, since nutrient sources in these two periods greatly differ. Furthermore, situation when the freshwater supply of nutrients triggered new primary production were compared with situation in which microbial growth was based on a constant recycling of once produced organic matter in lower saline waters impoverished in nutrients or in waters not influenced by freshwater. Due to steep gradients of environmental parameters over the year, the northern Adriatic is a favorable basin for such studies of environmental change scenarios and their influence on P-stress. Results of this study can help us to understand possible scenarios in future climatic changes such as oscillations of the freshwater runoff and sea warming.