Partial recovery of macrozoobenthos on the northwestern shelf of the Black Sea.

Autor: Chevalier S; MAST, Modelling for Aquatic Systems, University of Liège, Liège, Belgium; Netherlands Institute for Sea Research and Utrecht University, Department of Estuarine and Delta Systems,Yerseke 4401 NT, the Netherlands. Electronic address: severine.chevalier@uliege.be., Beauchard O; Netherlands Institute for Sea Research and Utrecht University, Department of Estuarine and Delta Systems,Yerseke 4401 NT, the Netherlands., Teacă A; National Institute for Research and Development on Marine Geology and Geo-ecology - GeoEcoMar, 23-25 Dimitrie Onciul Str., 024053 Bucharest, Romania., Soetaert K; Netherlands Institute for Sea Research and Utrecht University, Department of Estuarine and Delta Systems,Yerseke 4401 NT, the Netherlands., Grégoire M; MAST, Modelling for Aquatic Systems, University of Liège, Liège, Belgium.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2024 Oct; Vol. 207, pp. 116857. Date of Electronic Publication: 2024 Aug 30.
DOI: 10.1016/j.marpolbul.2024.116857
Abstrakt: The northwestern shelf of the Black Sea has been affected by eutrophication and bottom hypoxia since the sixties. Consequently, the macrozoobenthos has suffered a well-established decline in biodiversity. However, the nature of the current benthic communities remains questionable. From 1995 to 2017, we compiled species and abiotic data for 138 sites over the shelf. Through an appropriate multivariate analytical approach, we identified benthic community changes solely due to organic pollution variations. Our results show signs of recovery with an increase in biodiversity and proportion of species vulnerable to organic enrichment. These changes were related to a decrease in riverine loads and subsequent eutrophication. However, some long-lived species typical of the area still did not exhibit noticeable recovery, which suggests that either the recovery process has not yet been achieved or some environmental conditions are still not met to warrant a sea floor ecosystem state substantially healthy.
Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Severine Chevalier reports financial support was provided by Fund for Scientific Research. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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