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      The first unified inventory of non-native fishes of the South Caucasian countries, Armenia, Azerbaijan, and Georgia

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          Abstract

          The South Caucasus (SC) region is recognized for its high biological diversity and various endemic animal taxa. The area has experienced many fish introductions over the years, but the overall information about non-native fishes in the three SC countries, Armenia, Azerbaijan, and Georgia did not exist. Although these three countries belong to the Kura River drainage, Caspian Sea basin (only the western half of Georgia drains into the Black Sea), the legislative framework for each country regarding introduction of non-native fish species and their treatment is different and poorly developed. The goal of the present study was to make an initial inventory of non-native fish species in the three SC countries, and summarize the existing knowledge as a basis for future risk assessment models and formulation of regional management policies. Here, we present a unified list of 27 non-native species recorded in the wild in Armenia, Azerbaijan, and Georgia. Among these 27 species, eight were translocated from the Black Sea basin to the Caspian Sea basin. Out of these 27 non-native fishes, 15 species have become established (three of them being considered invasive) and six fish species could not survive in the wild.

          Abstract

          La région du Caucase du Sud (SC) est reconnue pour sa grande diversité biologique et ses divers taxons animaux endémiques. La région a connu de nombreuses introductions de poissons au fil des ans, mais il n'existait pas d'informations générales sur les poissons non indigènes dans les trois pays du SC, l'Arménie, l'Azerbaïdjan et la Géorgie. Bien que ces trois pays appartiennent au bassin versant de la rivière Kura, dans le bassin de la mer Caspienne (seule la moitié occidentale de la Géorgie se déverse dans la mer Noire), le cadre législatif de chaque pays concernant l'introduction d'espèces de poissons non indigènes et leur traitement est différent et peu développé. L'objectif de la présente étude était de dresser un premier inventaire des espèces de poissons non indigènes dans les trois pays du SC, et de résumer les connaissances existantes afin de servir de base aux futurs modèles d'évaluation des risques et à la formulation de politiques de gestion régionales. Nous présentons ici une liste unifiée de 27 espèces non indigènes enregistrées à l'état sauvage en Arménie, en Azerbaïdjan et en Géorgie. Parmi ces 27 espèces, huit ont été transférées du bassin de la mer Noire au bassin de la mer Caspienne. Sur ces 27 poissons non indigènes, 15 espèces se sont établies (trois d'entre elles étant considérées comme invasives) et six espèces de poissons n'ont pas pu survivre à l'état sauvage.

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          Biodiversity hotspots for conservation priorities.

          Conservationists are far from able to assist all species under threat, if only for lack of funding. This places a premium on priorities: how can we support the most species at the least cost? One way is to identify 'biodiversity hotspots' where exceptional concentrations of endemic species are undergoing exceptional loss of habitat. As many as 44% of all species of vascular plants and 35% of all species in four vertebrate groups are confined to 25 hotspots comprising only 1.4% of the land surface of the Earth. This opens the way for a 'silver bullet' strategy on the part of conservation planners, focusing on these hotspots in proportion to their share of the world's species at risk.
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                Author and article information

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                Journal
                Knowledge & Management of Aquatic Ecosystems
                Knowl. Manag. Aquat. Ecosyst.
                EDP Sciences
                1961-9502
                2021
                August 27 2021
                2021
                : 422
                : 32
                Article
                10.1051/kmae/2021028
                b469e970-b675-4ca2-b97c-8446e5aec1be
                © 2021

                https://creativecommons.org/licenses/by-nd/4.0/

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