Anthropogenic transformations of river ecosystems are not always bad for the environment: Multi-taxa analyses of changes in aquatic and terrestrial environments after dredging of a small lowland river

PeerJ

article

Robert Stryjecki¹  Andrzej Zawal²  Tomasz Krepski³  Edyta Stępień²  Edyta Buczyńska¹  Paweł Buczyński⁴  Stanisław Czachorowski⁵  Łukasz Jankowiak³  Joanna Pakulnicka⁵  Anna Sulikowska-Drozd⁶  Vladimir Pešić⁷  Grzegorz Michoński²  Michał Grabowski⁶  Aleksandra Jabłońska⁶  Magdalena Achrem³  Tomasz Olechwir²  Lech Pietrzak⁸  Agnieszka Szlauer-Łukaszewska² 

[1] Department of Zoology and Animal Ecology, University of Life Sciences in Lublin;Institute of Marine and Environmental Science, University of Szczecin;Institute of Biology, University of Szczecin;Department of Zoology and Nature Protection, Maria Curie-Skłodowska University;Department of Ecology and Environmental Protection, University of Warmia and Mazury in Olsztyn;Department of Invertebrate Zoology and Hydrobiology, University of Lodz;Department of Biology, University of Montenegro;B.P.P. “Bagnik” Lech Pietrzak

关键词: Multi-stage anthropogenic transformation;    Habitat diversity;    Species diversity;    Remedial measures;    Invertebrates;    Bioindicators;   

DOI  :  10.7717/peerj.12224

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Rivers are one of the most commonly transformed aquatic ecosystems. Most papers present significantly negative effects of activities such as dredging or channel regulation on the ecological status of rivers. The purpose of this work was to compare the response of various groups of invertebrates (Mollusca, Hydrachnidia, Odonata, Heteroptera, Coleoptera and Trichoptera) to an intervention involving dredging in conjunction with the removal of riparian vegetation. Habitat diversity increased after the dredging, and more individuals and species were caught than before the dredging. The increase in habitat diversity after the dredging translated into an increase in the species diversity of most investigated groups. Individual groups of invertebrates showed varied responses to the dredging, depending on the role of the terrestrial phase in their life cycle: the greater the role of the terrestrial phase in the life cycle, the more the group was affected by changes in the terrestrial environment following the intervention. In consequence, the intervention had the greatest negative impact on insects, and among these, on adult Odonata. The following conclusions can be drawn: (1) Dredging can benefit a previously anthropogenically transformed river ecosystem by increasing habitat diversity; (2) Odonata are particularly useful for assessing the impact of this type of intervention on invertebrate communities. They can be considered good indicators of habitat disturbances in both aquatic and terrestrial ecosystems.

【 授权许可】

CC BY