Recovery of the ruffe (Gymnocephalus cernua) population after an invasion boom of round goby (Neogobius melanostomus) in De Gijster Lake (the Netherlands)

IF 2.2 3区环境科学与生态学 Q2 ECOLOGY

Aquatic Invasions Pub Date : 2021-01-01 DOI:10.3391/ai.2021.16.3.07

T. Jůza, P. Blabolil, Daniel C. Barton, Martin Čech, V. Draštík, J. Frouzová, M. Holubová, H. Ketelaars, Luboš Kočvara, J. Kubečka, M. Muška, M. Prchalová, M. Říha, Zuzana Sajdlová, M. Šmejkal, M. Tušer, M. Vašek, L. Vejřík, I. Vejříková, A. Wagenvoort, J. Peterka

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引用次数: 2

Abstract

Studies dealing with invasive species usually focus on changes caused by invasion, however, natural recovery of the system after the initial population explosion (boom) has been much less studied. Ruffe dominated the benthic fish community in De Gijster Lake (Biesbosch National Park, the Netherlands) before a round goby invasion indicated by catches in both seines and gillnets. In 2012, the round goby was found for the first time and it was observed to undergo a boom in 2014, when ruffe almost completely disappeared. Nevertheless, gillnet sampling in 2016 indicated a decreasing trend in the number of round gobies and an increase in ruffe. These changes were confirmed during monitoring in 2019, when the density of round goby decreased seven times in comparison with 2014 indicated both in seine and gillnet catches. At the same time, the dens ity of ruffe increased six times in gillnets and from zero to 396 ind/ha in seine catches. Densities of both species were clearly negatively correlated and the approximate theoretical threshold-values for coexistence of both species were estimated as 750 i nd/ha in the littoral zone and 120 –140 ind/1000 m 2 of standard CEN gillnets. Our results show the recovery of a native fish population after a natural decline of the invasive species density, which could be important when considering the management of invasive species.

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荷兰De Gijster湖圆虾虎鱼(Neogobius melanostomus)入侵潮后，裸鱼(Gymnocephalus cernua)种群的恢复

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来源期刊

Aquatic Invasions ECOLOGY-MARINE & FRESHWATER BIOLOGY

CiteScore

4.30

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Aquatic Invasions is an open access, peer-reviewed international journal focusing on academic research of biological invasions in both inland and coastal water ecosystems from around the world. It was established in 2006 as initiative of the International Society of Limnology (SIL) Working Group on Aquatic Invasive Species (WGAIS) with start-up funding from the European Commission Sixth Framework Programme for Research and Technological Development Integrated Project ALARM. Aquatic Invasions is an official journal of International Association for Open Knowledge on Invasive Alien Species (INVASIVESNET). Aquatic Invasions provides a forum for professionals involved in research of aquatic non-native species, including a focus on the following: • Patterns of non-native species dispersal, including range extensions with global change • Trends in new introductions and establishment of non-native species • Population dynamics of non-native species • Ecological and evolutionary impacts of non-native species • Behaviour of invasive and associated native species in invaded areas • Prediction of new invasions • Advances in non-native species identification and taxonomy