Responses of stream fish populations to farming intensity and water abstraction in an agricultural catchment

2013 ◽  
Vol 59 (2) ◽  
pp. 286-299 ◽  
Author(s):  
Katharina Lange ◽  
Colin R. Townsend ◽  
Rasmus Gabrielsson ◽  
Pierre C. M. Chanut ◽  
Christoph D. Matthaei
Keyword(s):  
Fish Populations ◽  
Stream Fish ◽  
Water Abstraction

Impact of cypermethrin on stream fish populations under field-use in biotech-soybean production

Chemosphere ◽  
2007 ◽  
Vol 68 (4) ◽  
pp. 613-621 ◽  
Author(s):  
Pedro Carriquiriborde ◽  
Juan Díaz ◽  
Hernán Mugni ◽  
Carlos Bonetto ◽  
Alicia E. Ronco
Keyword(s):  
Fish Populations ◽  
Stream Fish ◽  
Soybean Production

scholarly journals Spatial synchrony in stream fish populations: influence of species traits

Ecography ◽  
2014 ◽  
Vol 37 (10) ◽  
pp. 960-968 ◽  
Author(s):  
Mathieu Chevalier ◽  
Pascal Laffaille ◽  
Gaël Grenouillet
Keyword(s):  
Species Traits ◽  
Fish Populations ◽  
Stream Fish ◽  
Spatial Synchrony

Have Adirondack Stream Fish Populations Changed in Response to Decreases in Sulfate Deposition?

2005 ◽  
Vol 134 (2) ◽  
pp. 338-345 ◽  
Author(s):  
Howard A. Simonin ◽  
James R. Colquhoun ◽  
Eric A. Paul ◽  
John Symula ◽  
Howard J. Dean
Keyword(s):  
Fish Populations ◽  
Stream Fish ◽  
Sulfate Deposition

EVALUATING IMPACTS OF MOUNTAIN TOP REMOVAL/VALLEY FILL COAL MINING ON STREAM FISH POPULATIONS

2004 ◽  
Vol 2004 (1) ◽  
pp. 576-592 ◽  
Author(s):  
C. Paola Ferreri ◽  
◽  
Jay R. Stauffer ◽  
Timothy D. Stecko
Keyword(s):  
Coal Mining ◽  
Fish Populations ◽  
Stream Fish ◽  
Valley Fill ◽  
Mountain Top Removal

scholarly journals Using genetics to prioritise headwater stream fish populations of the Marico barb, Enteromius motebensis Steindachner 1894, for conservation action

Koedoe ◽  
2017 ◽  
Vol 59 (1) ◽  
Author(s):  
Kerry-Ann Van der Walt ◽  
Ernst R. Swartz ◽  
Darragh Woodford ◽  
Olaf Weyl
Keyword(s):  
South Africa ◽  
Genetic Diversity ◽  
Conservation Planning ◽  
Conservation Status ◽  
Fish Populations ◽  
Limited Resources ◽  
Stream Fish ◽  
Conservation Action ◽  
River Catchment ◽  
Two Populations

South Africa has a relatively large number of threatened freshwater fish species and limited resources to implement conservation programs. Enteromius motebensis was regionally prioritised for action because of its conservation status and flagship status in a nationally important aquatic ecosystem. Genetic diversity of E. motebensis in headwater refugia of the Groot Marico River Catchment was assessed to determine if genetic diversity is important for conservation planning for this species. The results of the genetic analysis indicate that some prioritisation was possible, with two populations showing evidence of recent isolation.Conservation implications: We recommend that at least three populations be prioritised for conservation action to ensure maintenance of most of the remaining genetic diversity of the species.

Sampling Characteristics and Calibration of Snorkel Counts to Estimate Stream Fish Populations

2014 ◽  
Vol 34 (6) ◽  
pp. 1159-1166 ◽  
Author(s):  
Daniel M. Weaver ◽  
Thomas J. Kwak ◽  
Kenneth H. Pollock
Keyword(s):  
Fish Populations ◽  
Stream Fish

scholarly journals Electrofishing as a sampling technique for coastal stream fish populations and communities in the Southeast of Brazil

2000 ◽  
Vol 60 (2) ◽  
pp. 205-216 ◽  
Author(s):  
R. MAZZONI ◽  
N. FENERICH-VERANI ◽  
E. P. CARAMASCHI
Keyword(s):  
Quantitative Data ◽  
Sampling Technique ◽  
Field Trip ◽  
Field Trips ◽  
Fish Populations ◽  
Stream Fish ◽  
Sampling Efficiency ◽  
Fluvial System ◽  
Quantitative Data Analysis ◽  
Number Of Individuals

Electrofishing adequacy was tested as a technique to obtain quantitative data of coastal stream fish populations and communities in the Southeast of Brazil. Seven field trips, between July/94 and July/95, were done in 5 localities of the Ubatiba fluvial system (Maricá, RJ). Seventeen species, among the 22 collected, had their numbers estimated through the Zipping method, the model used to test the sampling methodology. At each field trip, three removals with electrofishing were done in each locality and, according to the number of obtained species at each locality/field trip, we analysed 315 cases. Nineteen cases, among 315, showed failure condition. Estimates were significant (p < 0.01) in 96% of the studied cases. Non-significant cases were obtained for rare species due to over and randomly efficient electrofishing in 63.3% and 36.4% of the cases, respectively. No correlation was found between catchability and the estimated number of individuals and/or environmental characteristics. High values for sampling efficiency (> 85%) were found for all estimates. An experimental analyses were done for one locality and, the comparison between the estimates for 3 and 6 successive removals showed a mean error and a standard deviation of 5.5% and 2.1% respectively. Therefore, it can be concluded that electrofishing was an efficient method for quantitative data analysis of fish populations and communities in the Ubatiba fluvial system.

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