scholarly journals Modeling occupancy of rare stream fish species in the upper Cumberland and Kentucky River Basins

2020 ◽  
Author(s):  
Nathaniel P. Hitt ◽  
Karli M. Rogers ◽  
Karmann Kessler ◽  
Hannah Macmillan
Keyword(s):  
Fish Species ◽  
River Basins ◽  
Stream Fish ◽  
Kentucky River

Community Ecology of Stream Fishes: Concepts, Approaches, and Techniques

2010 ◽  
Keyword(s):  
Climate Change ◽  
Fish Species ◽  
Species Distribution ◽  
General Circulation ◽  
Greenhouse Gas Emission ◽  
General Circulation Models ◽  
Consensus Method ◽  
Stream Fish ◽  
Emission Scenarios ◽  
Distribution Models

<em>Abstract</em>.—Stream fish are expected to be influenced by climate change as they are ectothermic animals living in lotic systems. Using fish presence–absence records in 1,110 stream sites across France, our study aimed at (1) modeling current and future distributions of 35 stream fish species, (2) using an ensemble forecasting approach (i.e., several general circulation models [GCM] × greenhouse gas emission scenarios [GES] × statistical species distribution models [SDM] combinations) to quantify the variability in the future fish species distribution due to each component, and (3) assessing the potential impacts of climate change on fish species distribution and assemblage structure by using a consensus method that accounted for the variability in future projections.

Surface water connectivity affects lake and stream fish species richness and composition

2020 ◽  
Author(s):  
Katelyn B.S. King ◽  
Mary Tate Bremigan ◽  
Dana M Infante ◽  
Kendra Spence Cheruvelil
Keyword(s):  
Species Richness ◽  
Surface Water ◽  
Species Diversity ◽  
Fish Species ◽  
Spatial Scales ◽  
Fish Communities ◽  
Integrated Approach ◽  
Stream Fish ◽  
Recreational Resources ◽  
Fish Species Diversity

Stream and lake fishes are important economic and recreational resources that respond to alterations in their surrounding watersheds and serve as indicators of ecological stressors on aquatic ecosystems. Research suggests that fish species diversity is largely influenced by surface water connectivity, or the lack thereof; however, few studies consider freshwater connections and their effect on both lake and stream fish communities across broad spatial extents. We used fish data from 559 lakes and 854 streams from the midwestern/northeastern United States to examine the role of surface water connectivity on fish species richness and community composition. We found that although lakes and streams share many species, connectivity had a positive effect on species richness across lakes and streams and helped explain species composition. Taking an integrated approach that includes both lake and stream fish communities and connectivity among freshwaters helps inform scientific understanding of what drives variation in fish species diversity at broad spatial scales and can help managers who are faced with planning for state, regional, or national scale monitoring and restoration.

Swimming Performance of Five Warmwater Stream Fish Species

2008 ◽  
Vol 137 (1) ◽  
pp. 209-215 ◽  
Author(s):  
Mandy K. Scott ◽  
Daniel D. Magoulick
Keyword(s):  
Fish Species ◽  
Swimming Performance ◽  
Stream Fish

scholarly journals Streams fish from Upper Araguaia and Middle Rio da Mortes basin, Brazil: generating subsidies for preservation and conservation of this critical natural resource

2021 ◽  
Vol 21 (4) ◽  
Author(s):  
Luciano B. Lima ◽  
Fagner Junior M. Oliveira ◽  
Fernando V. Borges ◽  
Fabiano Corrêa ◽  
Dilermando P. Lima-Junior
Keyword(s):  
Natural Resource ◽  
Fish Species ◽  
Threatened Species ◽  
Stream Fish ◽  
Aquatic Biodiversity ◽  
Brazilian Savannah ◽  
Fish Biodiversity ◽  
Araguaia River ◽  
Rare Fish ◽  
High Diversity

Abstract: The Araguaia River basin has the highest fish biodiversity within the Cerrado biome (Brazilian savannah), with many endemic and threatened species by human activities. Despite growing efforts to catalog Neotropical freshwater fish biodiversity, many regions are still undersampled. Our objective is to complement the information about stream fish in two hydrographic basins in the Cerrado. We sampled 72 streams with 50 m stretch in the Upper Araguaia (n = 32) and Middle Rio das Mortes (n = 40) basins. We collected 14,887 individuals distributed in 137 species, 81 genera, 30 families, and six orders. Characidae, Loricariidae, and Cichlidae were the families richer in species. We found a high diversity of rare fish species in the streams sampled, ca. 71.5% of the species had at least five individuals collected, and 18 species had only one collected specimen. The most frequent species were Astyanax cf. goyacensis, Knodus cf. breviceps, and Characidium cf. zebra. Both basins shared around 43% of the species. We caught 76 species in Upper Araguaia and 120 species in Middle Rio das Mortes. Seventeen exclusive fish species occurred in Upper Araguaia, whereas 61 were found in the Middle Rio das Mortes basin. Our analysis showed lower diversity of fish in Upper Araguaia than in the Middle Rio das Mortes basin. Considering the exclusive fish species of both basins, the human threats in those regions, and the few existent protected areas, we need a better look at the aquatic biodiversity conservation of this ecosystem.

scholarly journals Drainage network position and historical connectivity explain global patterns in freshwater fishes’ range size

2019 ◽  
Vol 116 (27) ◽  
pp. 13434-13439 ◽  
Author(s):  
Juan Carvajal-Quintero ◽  
Fabricio Villalobos ◽  
Thierry Oberdorff ◽  
Gaël Grenouillet ◽  
Sébastien Brosse ◽  
...  
Keyword(s):  
Fish Species ◽  
Explanatory Power ◽  
Size Variation ◽  
River Basins ◽  
Freshwater Fishes ◽  
Geographic Range ◽  
Range Size ◽  
Global Changes ◽  
Freshwater Biodiversity ◽  
Geographic Range Size

Identifying the drivers and processes that determine globally the geographic range size of species is crucial to understanding the geographic distribution of biodiversity and further predicting the response of species to current global changes. However, these drivers and processes are still poorly understood, and no ecological explanation has emerged yet as preponderant in explaining the extent of species’ geographical range. Here, we identify the main drivers of the geographic range size variation in freshwater fishes at global and biogeographic scales and determine how these drivers affect range size both directly and indirectly. We tested the main hypotheses already proposed to explain range size variation, using geographic ranges of 8,147 strictly freshwater fish species (i.e., 63% of all known species). We found that, contrary to terrestrial organisms, for which climate and topography seem preponderant in determining species’ range size, the geographic range sizes of freshwater fishes are mostly explained by the species’ position within the river network, and by the historical connection among river basins during Quaternary low-sea-level periods. Large-ranged fish species inhabit preferentially lowland areas of river basins, where hydrological connectivity is the highest, and also are found in river basins that were historically connected. The disproportionately high explanatory power of these two drivers suggests that connectivity is the key component of riverine fish geographic range sizes, independent of any other potential driver, and indicates that the accelerated rates in river fragmentation might strongly affect fish species distribution and freshwater biodiversity.

scholarly journals Fish distribution in the Ba Che and Tien Yen rivers

2020 ◽  
Vol 42 (2) ◽  
Author(s):  
Ta Thi Thuy ◽  
Tran Duc Hau ◽  
Nguyen Xuan Huan ◽  
Pham Van Long
Keyword(s):  
Marine Fish ◽  
Fish Species ◽  
Marine Species ◽  
River Basins ◽  
Fish Distribution ◽  
Research Areas ◽  
Salinity Levels ◽  
Data Book ◽  
Downstream Area ◽  
Distribution Of Fish

The ichthyo-fauna in the Ba Che and Tien Yen rivers, northern Vietnam is highly diverse, with a total of 245 species determined. However, data on the distribution of fish species are not sufficiently provided for the whole area. This study was conducted from 2008 to 2011 at 27 stations from the Ba Che and Tien Yen river basins to determine the distribution of fish species according to different sections of the rivers, water bodies, seasons, and salinity levels. The results show that fish species are distributed mainly in the river (with 210 species), concentrated in the downstream area (with 213 species). Fishes are mainly collected in the dry season when the salinity level of river is high, due to seawater intrusion which also brings in 160 species of marine fish. This shows that fish distribution in the research areas is mainly dominated by the presence of marine species. While for freshwater fish, it is clearly affected by the mountainous features. Apart from the common characteristics sharing between the two river basins, but the number of both freshwater and marine fish species in the Tien Yen river are larger than those of Ba Che river, which is related to fresh water surface, river morphology, the width and location of the estuary to the sea. The downstream area is home to the fish species recorded in the Red Data Book of Vietnam and the complementary species for Vietnam, while the middle and upstream of the rivers may offer a high potential of biodiversity, with many possibly new species for science. These are important data for the conservation and sustainable development of fish resources in the Ba Che and Tien Yen river basins. 

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