Freshwater fish diversity hotspots for conservation priorities in the Amazon Basin

2020 ◽  
Vol 34 (4) ◽  
pp. 956-965 ◽  
Author(s):  
Céline Jézéquel ◽  
Pablo A. Tedesco ◽  
William Darwall ◽  
Murilo S. Dias ◽  
Renata G. Frederico ◽  
...  
Keyword(s):  
Freshwater Fish ◽  
Amazon Basin ◽  
Conservation Priorities ◽  
Fish Diversity

scholarly journals South American freshwater fish diversity shaped by Andean uplift since the Late Cretaceous

2021 ◽  
Author(s):  
Lydian M Boschman ◽  
Fernanda A.S. Cassemiro ◽  
Luca Carraro ◽  
Jorad de Vries ◽  
Florian Altermatt ◽  
...  
Keyword(s):  
South America ◽  
Freshwater Fish ◽  
Amazon Basin ◽  
Atlantic Coast ◽  
Fish Diversity ◽  
Mountain Building ◽  
Major Step ◽  
Surface Uplift ◽  
Richness Pattern ◽  
Riverine Habitats

South America is home to the highest freshwater fish biodiversity on Earth. The hotspot of species richness is located in the western Amazon Basin, and richness decreases downstream along the Amazon River towards the mouth at the Atlantic coast, which contradicts the positive relationship between stream size and biodiversity that is commonly observed in river systems across the world. We investigate the role of river rerouting events caused by Andean mountain building and repeated episodes of flooding in western Amazonia in shaping the modern-day richness pattern of freshwater fishes in South America. To this end, we combine a reconstruction of river networks following Andean surface uplift since 80 million years ago with a mechanistic biological model simulating dispersal, allopatric speciation and extinction over the dynamic landscape of rivers and lakes. We show that the numerous small river rerouting events in western Amazonia resulting from mountain building produced highly dynamic riverine habitats that caused high diversification rates, shaping the exceptional present-day richness of this region. The history of marine incursions and lakes, including the Miocene Pebas megawetland system in western Amazonia, played a secondary role. This study is a major step towards the understanding of the processes involved in the interactions between the solid Earth, landscapes, and life of extraordinary biodiverse South America.

Patterns in Freshwater Fish Diversity

2021 ◽  
Author(s):  
Peter van der Sleen ◽  
James S. Albert
Keyword(s):  
Freshwater Fish ◽  
Fish Diversity

scholarly journals Implications of Dam Obstruction for Global Freshwater Fish Diversity

BioScience ◽  
2012 ◽  
Vol 62 (6) ◽  
pp. 539-548 ◽  
Author(s):  
Catherine Reidy Liermann ◽  
Christer Nilsson ◽  
James Robertson ◽  
Rebecca Y. Ng
Keyword(s):  
Freshwater Fish ◽  
Fish Diversity

Coarse-filter surrogates do not represent freshwater fish diversity at a regional scale in Queensland, Australia

2011 ◽  
Vol 144 (10) ◽  
pp. 2499-2511 ◽  
Author(s):  
S.R. Januchowski-Hartley ◽  
V. Hermoso ◽  
R.L. Pressey ◽  
S. Linke ◽  
J. Kool ◽  
...  
Keyword(s):  
Freshwater Fish ◽  
Regional Scale ◽  
Fish Diversity ◽  
Coarse Filter

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 Freshwater fish diversity in three tributary streams in Serayu Basin, Central Java, Indonesia

2020 ◽  
Vol 21 (12) ◽  
Author(s):  
Suhestri Suryaningsih ◽  
Dian Bhagawati ◽  
Sri Sukmaningrum ◽  
Sugiharto Sugiharto ◽  
Ayu ratna I gusti agung
Keyword(s):  
Freshwater Fish ◽  
Fish Species ◽  
Fish Diversity ◽  
Random Group ◽  
Freshwater Fish Species ◽  
Central Java ◽  
Gill Net ◽  
Southern Central ◽  
Temporal And Spatial ◽  
Fish Species Diversity

Abstract. Suryaningsih S, Bhagawati D, Sukmaningrum S, Sugiharto, Puspitasari IGAAR. 2020. Freshwater fish diversity in three tributary streams in Serayu Basin, Central Java, Indonesia. Biodiversitas 21: 5811-5817. Determining the diversity of freshwater fish species in Central Java, Indonesia has been confounded by temporal and spatial limitations in past studies. The Serayu Basin is a large watershed in Central Java that is believed to have high freshwater fish diversity. We aimed to determine the diversity and community structure of freshwater fish species in three tributaries of the Serayu, elucidate the factors influencing this diversity, and determine the extent to which these tributaries contribute to the total freshwater fish species richness for southwest Central Java. We conducted gill net sampling from May to August 2018 on the Tulis, Mrawu, and Kali Sapi Rivers located at Banjanegara district Sampling followed a random group technique in upstream, midstream, and downstream river sections of each tributary. In total, we observed 21 freshwater fish species. Broadly, fish species diversity was relatively low in the study area, and water temperature and dissolved oxygen were important in maintaining fish diversity. These three tributaries house 27–46% of the freshwater fish species reported for southern Central Java.

scholarly journals The alien freshwater fish of Mount Galunggung, West Java, Indonesia

2020 ◽  
Vol 21 (4) ◽  
Author(s):  
Haryono Haryono ◽  
Gema Wahyudewantoro
Keyword(s):  
Freshwater Fish ◽  
Poecilia Reticulata ◽  
Active Volcano ◽  
Ornamental Fish ◽  
Survey Method ◽  
Fish Diversity ◽  
Local Distribution ◽  
Introduced Fish ◽  
West Java ◽  
Alien Fish

Abstract. Haryono, Wahyudewantoro G. 2020. The alien freshwater fish of Mount Galunggung, West Java, Indonesia. Biodiversitas 21: 1401-1408. Mt. Galunggung, located in West Java, Indonesia, is an active volcano renowned for its deadly eruption in 1982. This area has many waters bodies, but the fish communities have not been recorded, especially the alien or introduced fish species. Hence, the objective of the present study was to determine the alien fish diversity, abundance, local distribution and utilization in Galunggung vicinity. The study was done in March 2013 using survey method covering 10 stations. Fish sampling was based on catch per unit of effort (CPUE) using mainly electrofishing, gillnet and cast net. A total of 24 species were recorded during the survey, in which 13 were listed as introduced species. Poecilia reticulata was the dominant species with 7.4 ind./St and followed by Xiphophorus helleri with 5.3 ind./St. Both species were also widely distributed on the sites with 70% local distribution. The alien species in this area are mostly used for ornamental fish.

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