Decadal‐scale regional variability in monitoring efforts significantly influences fish diversity trends in the Euphrates and Tigris catchments, Türkiye

Author:

Bayçelebi Esra1,Kaya Cüneyt1ORCID,Kurtul Irmak23ORCID,Turan Davut1,Haubrock Phillip Joschka456ORCID,Soto Ismael5ORCID,Aksu Sadi7ORCID,Tarkan Ali Serhan389

Affiliation:

1. Faculty of Fisheries Recep Tayyip Erdogan University Rize Türkiye

2. Marine and Inland Waters Sciences and Technology Department, Faculty of Fisheries Ege University Bornova İzmir Türkiye

3. Department of Life and Environmental Sciences Bournemouth University Poole Dorset UK

4. Department of River Ecology and Conservation Senckenberg Research Institute and Natural History Museum Frankfurt Gelnhausen Germany

5. Faculty of Fisheries and Protection of Waters, South Bohemian Research Centre of Aquaculture and Biodiversity of Hydrocenosese University of South Bohemia in České Budějovic Vodňany Czech Republic

6. CAMB, Center for Applied Mathematics and Bioinformatics Gulf University for Science and Technology Mishref Kuwait

7. Vocational School of Health Services Eskişehir Osmangazi University Eskişehir Türkiye

8. Department of Ecology and Vertebrate Zoology, Faculty of Biology and Environmental Protection University of Lodz Lodz Poland

9. Department of Basic Sciences, Faculty of Fisheries Muğla Sıtkı Koçman University Muğla Türkiye

Abstract

Abstract This study investigates the temporal and spatial distribution of species richness in the Turkish portions of the Euphrates and Tigris catchments in Mesopotamia, aiming to identify areas lacking sufficient research and inform future conservation and management efforts. Data from 153 fish assemblages in the Euphrates catchment and 100 in the Tigris catchment, spanning from 1941 to 2022, were analysed using a combination of analytical occurrence, spatial and space‐for‐time mixed effect models. Results indicate an increase in reported species over time, attributed to heightened sampling efforts, and reveal significant differences in spatial species richness distribution influenced by uneven sampling and environmental suitability. Identification of areas with insufficient research, potential undetected species and biodiversity losses highlights the need for improved assessments to prevent unnoticed biodiversity loss and ecosystem degradation. Our results emphasize the importance of accurate biodiversity assessments for effective conservation and management interventions in these catchments.

Publisher

Wiley

Reference92 articles.

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4. Doğu Anadolu bölgesinde nüfusun cinsiyet ve yaş yapısı;Başıbüyük A.;Doğu Coğrafya Dergisi,2011

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