Change in fish community composition following weir removal, field observations, and physical habitat simulations

2019 ◽  
Vol 35 (7) ◽  
pp. 1062-1071 ◽  
Author(s):  
Dongkyun Im ◽  
Byungwoong Choi ◽  
Sung‐Uk Choi
Keyword(s):  
Community Composition ◽  
Fish Community ◽  
Physical Habitat ◽  
Field Observations ◽  
Fish Community Composition

scholarly journals Assessing Historical Fish Community Composition Using Surveys, Historical Collection Data, and Species Distribution Models

PLoS ONE ◽  
2011 ◽  
Vol 6 (9) ◽  
pp. e25145 ◽  
Author(s):  
Ben Labay ◽  
Adam E. Cohen ◽  
Blake Sissel ◽  
Dean A. Hendrickson ◽  
F. Douglas Martin ◽  
...  
Keyword(s):  
Community Composition ◽  
Species Distribution ◽  
Fish Community ◽  
Species Distribution Models ◽  
Distribution Models ◽  
Fish Community Composition ◽  
Collection Data

scholarly journals Using eDNA Metabarcoding to Monitor Changes in Fish Community Composition After Barrier Removal

2021 ◽  
Vol 9 ◽  
Author(s):  
Teja P. Muha ◽  
Deiene Rodriguez-Barreto ◽  
Richard O'Rorke ◽  
Carlos Garcia de Leaniz ◽  
Sofia Consuegra
Keyword(s):  
Community Composition ◽  
Fish Community ◽  
Anguilla Anguilla ◽  
Environmental Dna ◽  
Life Cycles ◽  
Population Connectivity ◽  
Community Diversity ◽  
Additional Species ◽  
Fish Community Composition ◽  
Barrier Removal

Artificial instream barriers are a major cause of habitat fragmentation that reduce population connectivity and gene flow by limiting fish movements. To mitigate their impacts, obsolete barriers are increasingly been removed worldwide, but few barrier removal projects are monitored. We employed a powerful Before-After-Downstream-Upstream (BADU) approach using environmental DNA (eDNA) metabarcoding to examine the effects on fish community composition of removing a weir in the river Lugg (England) that had been suggested to have a detrimental effect on salmonid migration. We found no change in fish community diversity or relative abundance after the removal above or below the weir, but detected an important effect of sampling season, likely related to the species' life cycles. eDNA detected nine fish species that were also identified by electrofishing sampling and one additional species (Anguilla anguilla) that was missed by traditional surveys. Our results suggest that monitoring of barrier removal projects should be carried out to ensure that any ecological benefits are properly documented and that eDNA metabarcoding is a sensitive technique to monitor the effects of barrier removal.

Patterns of fish community composition along a river affected by agricultural and urban disturbance in south-central Chile

Hydrobiologia ◽  
2008 ◽  
Vol 620 (1) ◽  
pp. 35-46 ◽  
Author(s):  
Rodrigo Orrego ◽  
S. Marshall Adams ◽  
Ricardo Barra ◽  
Gustavo Chiang ◽  
Juan F. Gavilan
Keyword(s):  
Community Composition ◽  
Fish Community ◽  
Central Chile ◽  
South Central ◽  
Fish Community Composition
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