Aquatic Biodiversity Challenges in the Third Millennium

A special issue of Fishes (ISSN 2410-3888).

Deadline for manuscript submissions: closed (30 November 2024) | Viewed by 1621

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Applied Ecology Research Center, Lucian Blaga University of Sibiu, I. Raţiu Street 5-7, 550012 Sibiu, Romania
Interests: aquatic ecosystems ecology; biodiversity; fish; macroinvertebrates; wilderness; human impact; assessment; monitoring; management; sustainability
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Special Issue Information

Dear Colleagues,

The highly complex matrix of stressors of the third millennium playing a driving role in changing aquatic ecosystem biodiversity, specifically including aquatic animals, needs to be studied employing identification, inventory, assessment of interactions and impacts, monitoring and management techniques within different spatial and temporal contexts.

This Special Issue intends to stress the importance of this subject area and the implications of the obtained results for environmental structure and function conservation, protection and restoration practice, specifically related to the aquatic animals. We welcome both classic and innovative valuable research approaches which aim to communicate recent advances in the aquatic biodiversity habitats, species, populations, associations, communities, biocoenosis, ecosystems, etc., from local to global, and from short- to long-term perspectives.

Aquatic animals, priceless natural resource builders of the humankind, are ecologic indicators of the state of the Blue Planet and an oracle of our common fate. The third millennium will have its own chance to keep us together alive or let the floating wonders survive and thrive and make us vanish.

Dr. Doru Bănăduc
Guest Editor

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Keywords

  • aquatic biodiversity: assessment, monitoring, conservation and management
  • aquatic habitats—biodiversity interrelations
  • aquatic biodiversity and alien species
  • food web interactions and aquatic productivity
  • wetlands biodiversity
  • research methods in aquatic ecology / biodiversity
  • ecologic reconstruction and the biodiversity
  • human impact and the aquatic biodiversity
  • toxicology
  • global changes

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Published Papers (1 paper)

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Research

14 pages, 3010 KiB  
Article
Influence of Longitudinal Fragmentation on Length–Weight Relationships of Fishes in the Someșul Cald River, Romania
by Paul Uiuiu, Radu Constantinescu, Tudor Păpuc, George-Cătălin Muntean, Maria Cătălina Matei-Lațiu, Anca Becze, Daniel Cocan, Călin Lațiu and Cristian Olimpiu Martonoș
Fishes 2024, 9(10), 420; https://doi.org/10.3390/fishes9100420 - 21 Oct 2024
Viewed by 670
Abstract
Romania has a rich hydrographic network, which permitted the construction of over 80 large dams on its water courses, estimating a number between 545 and 674 hydropower plants that were either built or were in a different construction stage on the rivers of [...] Read more.
Romania has a rich hydrographic network, which permitted the construction of over 80 large dams on its water courses, estimating a number between 545 and 674 hydropower plants that were either built or were in a different construction stage on the rivers of Romania in 2021. These hydropower plants were often built outside specific legislation regarding ecological impacts, especially before 1990. Longitudinal fragmentation of rivers causes severe ecological impacts on biodiversity, food chains, and nutrient cycles. Someșul Cald River is the main tributary of Someșul Mic River, the most important water source for the northwestern region of Transylvania. On its course, several dams and reservoirs were built from 1968 to 1980 for electricity production and population freshwater supply. The present study aimed to analyze the length–weight relationships (LWRs) and condition factors occurring in the longitudinally fragmented Someșul Cald River. The LWRs, relative condition factor Kn, and Fulton condition factor K were determined based on total length and wet body weight. Comparisons of LWRs, Kn, and K across river sections constrained by dams showed that some fish species exhibited similar growth patterns and physiological conditions, while others differed significantly. Freshwater fish physiology is altered by longitudinal fragmentation, both natural and artificial. Barriers such as dams influence the energy gradient, limiting feed availability and, consequently, the life history of fish species. Long-term management plans regarding conservation should take into consideration existing fish species population dynamics, along with their physiological and somatic status. Full article
(This article belongs to the Special Issue Aquatic Biodiversity Challenges in the Third Millennium)
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