Freshwater Fish Biodiversity in Iraq: Importance, Threats, Status, and Conservation Challenges

2021 ◽  
pp. 479-497
Author(s):  
Laith A. Jawad
Keyword(s):  
Freshwater Fish ◽  
Fish Biodiversity

Freshwater fish biodiversity in the Leizhou Peninsula of China

2019 ◽  
Vol 22 (2) ◽  
pp. 160-170 ◽  
Author(s):  
Wen Xiong ◽  
Dong Xie ◽  
Gang Chen ◽  
Dekui He
Keyword(s):  
Freshwater Fish ◽  
Leizhou Peninsula ◽  
Fish Biodiversity

scholarly journals How restructuring river connectivity changes freshwater fish biodiversity and biogeography

2011 ◽  
Vol 47 (5) ◽  
Author(s):  
Heather J. Lynch ◽  
Evan H. Campbell Grant ◽  
Rachata Muneepeerakul ◽  
Muthukumarasamy Arunachalam ◽  
Ignacio Rodriguez-Iturbe ◽  
...  
Keyword(s):  
Freshwater Fish ◽  
Fish Biodiversity

An updated assessment of human activities, the environment, and freshwater fish biodiversity in Canada

2015 ◽  
Vol 72 (1) ◽  
pp. 135-148 ◽  
Author(s):  
Cindy Chu ◽  
Charles K. Minns ◽  
Nigel P. Lester ◽  
Nicholas E. Mandrak
Keyword(s):  
British Columbia ◽  
Freshwater Fish ◽  
Human Activities ◽  
Future Research ◽  
Conservation Priorities ◽  
Anthropogenic Stress ◽  
South Central ◽  
Fish Biodiversity ◽  
Recent Climate ◽  
Conservation And Management

Changes in resource development and expansions of urban centres suggest that the intensity and types of anthropogenic stressors affecting Canada’s watersheds are changing. Chu et al. (2003) integrated indices of freshwater fish biodiversity, environmental conditions, and anthropogenic stress to identify priority watersheds for conservation and management. Here, we update those indices using recent climate and census data to assess changes through time. We also applied different conservation and management scenarios to evaluate the robustness of our prioritization approach. Between time periods, the environmental and stress indices expanded northward because of warmer temperatures at higher latitudes and more intense anthropogenic stress in the northern regions of the provinces. Conservation priorities increased in northern British Columbia, Alberta, and Ontario but decreased in southern British Columbia, Saskatchewan, and south-central Quebec. Under multiple scenarios, conservation priorities were consistently highest in British Columbia, the Maritimes, southern Ontario, and southern Quebec. Future research to refine this assessment should focus on developing a nationwide georeferenced assessment of freshwater fisheries stress, quantifying spatial changes in the stressors, and evaluating the sensitivity of each index to the weighting of the individual variables. This work highlights the necessity for conservation and management strategies in Canada to keep pace with changing patterns in climate and human activities.

scholarly journals Alpine freshwater fish biodiversity assessment: an intercalibration test for metabarcoding method set up

2021 ◽  
Vol 4 ◽  
Author(s):  
Giulia Riccioni ◽  
Isabelle Domaizon ◽  
Andrea Gandolfi ◽  
Massimo Pindo ◽  
Marine Vautier ◽  
...  
Keyword(s):  
Freshwater Fish ◽  
Population Decline ◽  
Environmental Dna ◽  
Well Being ◽  
Taxonomic Resolution ◽  
Anthropogenic Pressure ◽  
Biodiversity Assessment ◽  
Good Efficiency ◽  
Essential Information ◽  
Fish Biodiversity

Environmental DNA (eDNA) based methods (Fig. 1) are proving to be a promising tool for freshwater fish biodiversity assessment in Europe within the Water Framework Directive (WFD, 2000/60/EC) especially for large rivers and lakes where current fish monitoring techniques have known shortcomings. Freshwater fish are actively involved in aquatic ecosystems functioning and diversity, contributing to the health, well-being and economy in every geographic realm. Unfortunately, many freshwater fish are experiencing critical population decline with risk of local or global extinction because of intense anthropogenic pressure. Within the EU project Eco-AlpsWater, advanced high throughput sequencing (HTS) techniques are used to improve the traditional WFD monitoring approaches by using environmental DNA (eDNA) collected in Alpine waterbodies. To evaluate the performance of the metabarcoding approach specifically designed to measure freshwater fish biodiversity in Alpine lakes and rivers, an intercalibration test was performed. This exercise forecasted the use of mock samples containing either tissue-extracted DNA of different target species or water collected from aquaculture tanks to mimic real environmental water sampling and processing. Moreover, three water samples collected in Lake Bourget (France) were used to compare the efficiency of taxonomic assignments in natural and mock community samples. Our results highlighted a good efficiency of the molecular laboratory protocols for HTS and a good amplification success of the selected primers, providing essential information concerning the taxonomic resolution of the 12S mitochondrial marker. As further confirmation, different concentration of species DNA in the mock samples were well represented by the relative read abundance. This preliminary test confirmed the applicability of eDNA metabarcoding analyses for the biomonitoring of freshwater fish inhabiting Alpine and perialpine lakes and rivers.

Global imprint of historical connectivity on freshwater fish biodiversity

2014 ◽  
Vol 17 (9) ◽  
pp. 1130-1140 ◽  
Author(s):  
Murilo S. Dias ◽  
Thierry Oberdorff ◽  
Bernard Hugueny ◽  
Fabien Leprieur ◽  
Céline Jézéquel ◽  
...  
Keyword(s):  
Freshwater Fish ◽  
Fish Biodiversity

scholarly journals Fishermen’s perceptions and experiences toward the impact of climate change and anthropogenic activities on freshwater fish biodiversity in Côte d’Ivoire

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Amien Isaac Amoutchi ◽  
Thomas Mehner ◽  
Ogechi Nnabuchi Ugbor ◽  
Alpha Kargbo ◽  
Kouamelan Essetchi Paul
Keyword(s):  
Climate Change ◽  
Freshwater Fish ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Anthropogenic Activities ◽  
Freshwater Ecosystems ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
Fish Biodiversity ◽  
The Impact

AbstractAfrica’s freshwater ecosystems are impacted by many threats due to climate change and several anthropogenic activities. In Côte d’Ivoire, the economy relies mostly on agriculture, which covers around 64% of the land surface. The study aimed to investigate Côte d’Ivoire fishermen’s perception of climate change, its drivers and other anthropogenic activities impacting freshwater fish biodiversity. The fish species locally threatened in the Ivorian freshwater ecosystems were also investigated. Face to face interviews and a structured questionnaire were used. The data obtained were analysed using descriptive statistics such as frequency, percentage, means, and standard deviation, minimum and maximum. The multinomial logit regression was also applied to test factors that influence fishermen’s awareness and perception of climate change and their perception of change in fish abundance. The results show that around 72.7% of fishermen were aware of climate change. Decreases of precipitation (87.9%) and increases of temperature (76.1%) were observed by fishermen. Also, a significant decrease in fish quantity was observed by respondents. Climate change and anthropogenic activities such as gold mining, water withdrawal, use of small-mesh fishing nets, overfishing, industrial waste pollution, pesticides use for agricultural purposes along watersheds, obnoxious fishing practices and population growth, were highlighted as the main reasons for this decline. Species such as Lates niloticus, Heterotis niloticus, Parachanna obscura, Malapterurus electricus, Sarotherodon galilaeus, Tilapia zillii, Polpyterus endlicheri and Labeo coubie were listed by fishermen as locally threatened within Ivorian freshwater ecosystems. Actions and policies are needed to be taken by local authorities to ensure the sustainability of fisheries resources. The information obtained from this study constitutes a prerequisite for developing and implementing studies or policies aimed at mitigating and combating the negative effect of climate change and anthropogenic activities on the Ivorian freshwater ecosystem.

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