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Diversity
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Monitoring and Conservation of Aquatic Organism in the Yangtze River...
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Monitoring and Conservation of Aquatic Organism in the Yangtze River Basin

A special issue of Diversity (ISSN 1424-2818).

Deadline for manuscript submissions: closed (30 April 2024) | Viewed by 6952

Special Issue Editors

Dr. Sen Ding

E-Mail Website
Guest Editor
Institute of Water Ecology and Environment, Chinese Research Academic of Environmental Sciences, Beijing 100012, China
Interests: taxonomy systematics of fish; biomonitoring and assessment; nature-based solution
Dr. Xin Gao

E-Mail Website
Guest Editor
Institute of Water Ecology and Environment, Chinese Research Academic of Environmental Sciences, Beijing 100012, China
Interests: taxonomy systematics of macrobenthos; conservation biology; stream ecology; basin sustainable management

Special Issue Information

Dear Colleagues,

Aquatic biodiversity is an essential basis for the health of the river ecosystem, and provides indispensable products and services for humans. As the longest river in China, the Yangtze River is rich in living resources, and has 416 fish species and subspecies, accounting for 40% of the total freshwater fish of our country. Due to various anthropogenic disturbances, such as pollution, dam, shipping or sand mining, the aquatic biodiversity of the Yangtze River has declined in recent decades. Although the tasks of aquatic organism monitoring and protection have been deployed in the Yangtze River by the Central Government, the practical application still faces many unsolved technical challenges.

This Special Issue will provide an opportunity to highlight new research on the monitoring and sustainable management of aquatic organisms in the Yangtze River. We invite manuscripts that focus on biogeography, ecology and conservation to form a platform to further our understanding of the aquatic biodiversity in the Yangtze River.

Dr. Sen Ding
Dr. Xin Gao
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Diversity is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2100 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • diversity and biogeographical pattern
  • advanced biomonitoring method
  • bioassessment
  • rare and endangered species
  • invasive species
  • conservation management

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Published Papers (4 papers)

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Research

11 pages, 1905 KiB  
Article
The Effects of Sampling-Site Intervals on Fish Species Richness in Wadeable Rivers: A Case Study from Taizi River Basin, Northeastern China
by Mingqiao Yu, Zhao Li, Qian Zhao and Sen Ding
Diversity 2024, 16(6), 330; https://doi.org/10.3390/d16060330 - 4 Jun 2024
Viewed by 753
Abstract
Fish play an important role in river ecosystems, and the conservation of their diversity is a common goal worldwide. It is still unclear how fish monitoring programs should be developed in order to rationalize the monitoring of fish diversity in rivers. To help [...] Read more.
Fish play an important role in river ecosystems, and the conservation of their diversity is a common goal worldwide. It is still unclear how fish monitoring programs should be developed in order to rationalize the monitoring of fish diversity in rivers. To help address this issue, we conducted a comparative study of fish species richness obtained through three site-interval monitoring programs (SS1: 3 km interval scheme; SS2: 6 km interval scheme; SS3: 9 km interval scheme) in wadeable rivers in northeastern China. Here, a total of 18 fish species and 4 rare species were collected from 3 rivers. The cumulative species-richness curves showed that SS1 had the highest species richness in a single river and in the whole region, and the species richness gradually decreased with increasing site intervals. The results of the cumulative percentage of species richness indicated that SS1 and SS2 could achieve a level of 80% of potential species richness, while only SS1 could achieve a level of 90% of potential species richness in the Lanhe River (where no rare species were present). However, the results of cumulative species richness per unit of effort indicated that SS2 and SS3 had higher input-output benefits. These results suggested that rare species were more susceptible to monitoring programs and that SS2 was more advantageous in terms of obtaining species richness and cost-effectiveness. This study provides a reliable reference for river fish-monitoring program development. Full article
(This article belongs to the Special Issue Monitoring and Conservation of Aquatic Organism in the Yangtze River Basin)
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17 pages, 3216 KiB  
Article
Phytoplankton Community Dynamics in Ponds with Diverse Biomanipulation Approaches
by Yantao Zhang, Jie Yang, Xiaoman Lin, Biao Tian, Tanglin Zhang and Shaowen Ye
Diversity 2024, 16(2), 75; https://doi.org/10.3390/d16020075 - 25 Jan 2024
Cited by 1 | Viewed by 1851
Abstract
The rising challenge of eutrophication in aquatic systems globally necessitates an understanding of phytoplankton community dynamics under diverse biomanipulation approaches. This study, conducted from June 2022 to July 2023 in the Yuqiao Reservoir’s ponds in China, explored phytoplankton dynamics across ponds under different [...] Read more.
The rising challenge of eutrophication in aquatic systems globally necessitates an understanding of phytoplankton community dynamics under diverse biomanipulation approaches. This study, conducted from June 2022 to July 2023 in the Yuqiao Reservoir’s ponds in China, explored phytoplankton dynamics across ponds under different biomanipulation strategies. The study included a pond (BL) without fish stocking, a pond (CH) stocked with carnivorous and herbivorous fish, and another pond (CFD) incorporating a mix of carnivorous, filter-feeding, and detritus-feeding fish. Substantial seasonal variations in phytoplankton density and biomass were observed. In the BL pond, phytoplankton density ranged from 0.23 × 107 to 3.21 × 107 ind/L and biomass from 0.71 to 7.10 mg/L, with cyanobacteria predominantly in warmer seasons and a shift to cryptophytes and chrysophytes in winter. The CH pond exhibited a density range from 0.61 × 107 to 8.04 × 107 ind/L and biomass of 1.11 to 7.58 mg/L. Remarkably, the CFD pond demonstrated a significant reduction in both density (0.11 × 107 to 2.36 × 107 ind/L) and biomass (0.27 to 5.95 mg/L), indicating the effective implementation of its biomanipulation strategy. Key environmental factors including total nitrogen, water temperature, pH, chlorophyll-a, and total phosphorus played a significant role in shaping phytoplankton communities. The study highlights the importance of tailored biomanipulation strategies in aquatic ecosystem management, emphasizing long-term monitoring for sustainable management of eutrophication. Full article
(This article belongs to the Special Issue Monitoring and Conservation of Aquatic Organism in the Yangtze River Basin)
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14 pages, 4087 KiB  
Article
Environmental Correlates to Genetic Diversity and Structure in Invasive Apple Snail (Pomacea canaliculata) Populations in China
by Xiongjun Liu, Yu Zhou, Shan Ouyang and Xiaoping Wu
Diversity 2023, 15(10), 1048; https://doi.org/10.3390/d15101048 - 28 Sep 2023
Cited by 1 | Viewed by 1659
Abstract
Invasive species are one of the most serious threats to biodiversity. Pomacea canaliculata is considered one of the world’s 100 worst invasive species. Major determinants of invasive species distribution are their environmental tolerances, and an understanding of correlations between local environmental variables (e.g., [...] Read more.
Invasive species are one of the most serious threats to biodiversity. Pomacea canaliculata is considered one of the world’s 100 worst invasive species. Major determinants of invasive species distribution are their environmental tolerances, and an understanding of correlations between local environmental variables (e.g., pH, concentration of dissolved oxygen) and genetic diversity is necessary to better prevent and manage the spread of invasive species. However, while such studies have demonstrated associations between the distribution and density of P. canaliculata and water quality correlates, the principal mechanisms relating genetic and these environmental correlates have not been fully articulated. Here, the correlation between physicochemical parameters and genetics of P. canaliculata were analyzed. The results showed that P. canaliculata among the six collection locations had robust genetic diversity, significant genetic differentiation, limited gene flow, and stable population dynamics. RDA analysis showed that genetic variation in P. canaliculata was significantly correlated with concentration of dissolved oxygen and pH. These results will provide a basis for effectively preventing and managing the spread of invasive species and identifying which habitats may be more at risk of invasion. Full article
(This article belongs to the Special Issue Monitoring and Conservation of Aquatic Organism in the Yangtze River Basin)
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13 pages, 2198 KiB  
Article
Length–Weight Relationships and Diversity Status of Fishes in the Midstream of the Jialing River, a Tributary of the Upper Yangtze River, China
by Qiang Qin, Jianghaoyue Xu, Fubin Zhang, Shan He, Tong Zhou, Shuyin Li and Yu Zeng
Diversity 2023, 15(4), 561; https://doi.org/10.3390/d15040561 - 16 Apr 2023
Cited by 2 | Viewed by 1850
Abstract
The study described the length–weight relationships (LWRs) and diversity status of fishes in the midstream of the Jialing River, which is the largest tributary of the upper Yangtze River, China. A total of 4592 specimens from 53 fish species belonging to three orders [...] Read more.
The study described the length–weight relationships (LWRs) and diversity status of fishes in the midstream of the Jialing River, which is the largest tributary of the upper Yangtze River, China. A total of 4592 specimens from 53 fish species belonging to three orders and eight families were collected from December 2021 to November 2022. The results showed that Culter oxycephaloides, Xenocypris davidi, Hemibarbus labeo, Hemiculter tchangi were dominant fish species in the study region. Twenty-five fish species (IRI ≥ 10) were subjected to LWR analysis, and the regression parameters a and b for fish species varied from 0.006 to 0.333 and 2.129 to 3.391. Eleven fish species were determined to have isometric growth, and 14 fish species were determined to have allometric growth. The diversity analyses suggested that the diversity status of fishes were kept relatively stable during the sampling period and that the fishes suffered moderate disturbance in the midstream of the Jialing River. The present study provided basic biology data for fish conservation and management after the fishing ban in the Jialing River. Full article
(This article belongs to the Special Issue Monitoring and Conservation of Aquatic Organism in the Yangtze River Basin)
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