Effect of Global Climate Change on Aquatic Ecosystems and Ecological Sustainability Research

A special issue of Biology (ISSN 2079-7737). This special issue belongs to the section "Ecology".

Deadline for manuscript submissions: closed (30 September 2023) | Viewed by 3542

Special Issue Editor

Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
Interests: freshwater fish diversity; spawning and nursery ground; ecological efficacy; life history strategies; habitat heterogeneity; fish resource management

Special Issue Information

Dear Colleagues,

Climate change is said to threaten half of all freshwater fish with endangerment and extinction. Water temperature is an abiotic master variable for the survival of aquatic organisms. Global warming alters the thermal regimes of rivers, and thus poses a threat to freshwater biodiversity. To address their impacts on freshwater fish species in life cycle assessment (LCA) is very important.

Furthermore, freshwater ecosystems are among the most endangered ecosystems on Earth and are vulnerable to climate change. Studies have shown that climate change has already altered the phenology and distribution of freshwater species. However, there are still major gaps in our understanding of potential impacts of climate change on freshwater ecosystems and their organisms. Freshwater fishes were used as effective indicators for identifying the degree, direction and scale of changes in aquatic ecosystems and as indicators of freshwater ecosystem quality and health. However, they are rarely used to determine sensitive freshwater ecosystems to climate change using species distribution modelling, especially using larval fish species dynamics.

Thirdly, novel climates in river sub-basins pose a challenge for the persistence of freshwater fish globally. Ignoring climate change and species traits could question conservation efforts. Understanding how climate change would affect biota inhabiting sensitive and highly valuable ecosystems, spanning broad regions, is essential to anticipating the implications for biodiversity and humans and to identify management and mitigation measures.

We are pleased to invite you to provide relevant research to assess the potential impacts on freshwater biodiversity from global warming from a new cause-effect pathway in LCA; to determine sensitive freshwater ecosystems to climate change using species distribution dynamics, especially in larval fish species; and to evaluate climatic risks over broad regions and the establishment of specialized policies for the conservation of freshwater biodiversity.

This Special Issue aims to discuss the potential impacts of environmental extremes on aquatic animals, as well as their response mechanisms and adaptation strategies of aquatic organisms to cope with the effects of global climate change. Contributed articles in the form of research articles, review articles, and short communications are invited, and we especially hope to solicit papers that contribute to a better understanding of aquatic organism responses to future climate change.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

  1. The combined effects of environmental factors caused by global climate change and other stressors on freshwater ecosystems.
  2. Adaptive strategies for survival and growth of freshwater fish in extreme environments.
  3. Response of freshwater animals to environmental stresses at different developmental stages.
  4. Application of physiology, molecular biology and multi-omics approaches to study regulatory adaptation mechanisms.
  5. Integrate the superimposed and eliminated effects of environmental factors on aquatic organisms.
  6. Use systems biology to reveal the overall changes of freshwater fish species to environmental stress.

I look forward to receiving your contributions.

Dr. Di'an Fang
Guest Editor

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Keywords

  • climate change
  • freshwater ecosystems
  • biodiversity
  • ecological sustainability
  • freshwater fish
  • larval fish
  • environmental factors

Published Papers (2 papers)

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Research

16 pages, 5999 KiB  
Article
Water-Level Fluctuation Control of the Trophic Structure of a Yangtze River Oxbow
by Longhui Qiu, Fenfen Ji, Yuhui Qiu, Hongyu Xie, Guangyu Li and Jianzhong Shen
Biology 2023, 12(10), 1359; https://doi.org/10.3390/biology12101359 - 23 Oct 2023
Viewed by 966
Abstract
Seasonal water-level fluctuations can profoundly impact nutrient dynamics in aquatic ecosystems, influencing trophic structures and overall ecosystem functions. The Tian-e-Zhou Oxbow of the Yangtze River is China’s first ex situ reserve and the world’s first successful case of ex situ conservation for cetaceans. [...] Read more.
Seasonal water-level fluctuations can profoundly impact nutrient dynamics in aquatic ecosystems, influencing trophic structures and overall ecosystem functions. The Tian-e-Zhou Oxbow of the Yangtze River is China’s first ex situ reserve and the world’s first successful case of ex situ conservation for cetaceans. In order to better protect the Yangtze finless porpoise, the effects of water-level fluctuations on the trophic structure in this oxbow cannot be ignored. Therefore, we employed stable isotope analysis to investigate the changes in the trophic position, trophic niche, and contribution of basal food sources to fish during the wet and dry seasons of 2021–2022. The research results indicate that based on stable isotope analysis of the trophic levels of different dietary fish species, fish trophic levels during the wet season were generally higher than those during the dry season, but the difference was not significant (p > 0.05). Fish communities in the Tian-e-Zhou Oxbow exhibited broader trophic niche space and lower trophic redundancy during the wet season (p < 0.05), indicating a more complex and stable food web structure. In both the wet and dry seasons, fish in the oxbow primarily relied on endogenous carbon sources, but there were significant differences in the way they were utilized between the two seasons (p < 0.05). In light of the changes in the trophic structure of the fish during the wet and dry seasons, and to ensure the stable development of the Yangtze finless porpoise population, we recommend strengthening the connectivity between the Tian-e-Zhou Oxbow and the Yangtze River. Full article
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20 pages, 4367 KiB  
Article
Distribution Pattern of Mangrove Fish Communities in China
by Jinfa Zhao, Chunhou Li, Teng Wang, Chunran Li, Jianzhong Shen, Yong Liu and Peng Wu
Biology 2022, 11(12), 1696; https://doi.org/10.3390/biology11121696 - 24 Nov 2022
Cited by 3 | Viewed by 2020
Abstract
Mangroves are among the most productive marine and coastal ecosystems and play an important role in maintaining the stability and diversity of fish communities. To explore the structure of mangrove fish communities in China, we compiled previous studies, monographs, and two databases on [...] Read more.
Mangroves are among the most productive marine and coastal ecosystems and play an important role in maintaining the stability and diversity of fish communities. To explore the structure of mangrove fish communities in China, we compiled previous studies, monographs, and two databases on 54 mangrove areas published in the past 30 years. Mangrove fish communities in China comprised Osteichthys (597 species) and Chondrichthyes (14 species), representing 611 species in 344 genera, 117 families, and 28 orders. Perciformes were the predominant taxon, with 350 species in 52 families, accounting for 57% of the total species richness. Reef fish accounted for 29.62%. With regard to feeding groups, there were 328 carnivorous species (53.68%), 214 omnivorous species (35.02%), 41 herbivorous species (6.71%), and 28 detritivores species (4.58%). Classified by body size, 57.61% were small-sized, 24.22% medium-sized, and 18.17% were large-sized fishes. A total of 5.23% (32 species) of these mangrove fish are currently on IUCN red lists, i.e., 2 species are critically endangered, 4 are endangered, 12 are vulnerable, and 14 are near threatened. Cluster analyses shows that Chinese mangroves fish were divided into two categories, i.e., coastal mangrove and island mangrove type. This is closely related to the distribution of reef fish. Moreover, the number of fish species showed a strong positive correlation with mangrove area, but not with latitude. The main reasons may be the subtropical and tropical geographic locations, as well as the characteristics of the South China Sea and the Taiwan Warm Current. The size and integrity of mangrove area are crucial to the local ecosystems; thus, protecting and restoring mangroves is of great significance to large-scale ecosystem-stability and local biodiversity. Full article
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