scholarly journals Long-term changes in the functional trait composition and diversity of fish assemblages in eastern plain lakes under the regime of river-lake connectivity loss

2022 ◽  
Vol 34 (1) ◽  
pp. 151-161
Author(s):  
Zheng Peng ◽  
◽  
Jiang Xiaoming ◽  
Cao Liang ◽  
Wang Jun ◽  
...  
Keyword(s):  
Fish Assemblages ◽  
Functional Trait ◽  
Long Term Changes

Changes in diversity in the fish assemblage of a southern Australian embayment: consistent spatial structuring at decadal scales

2010 ◽  
Vol 61 (12) ◽  
pp. 1425 ◽  
Author(s):  
C. A. Jung ◽  
S. E. Swearer ◽  
G. P. Jenkins
Keyword(s):  
Temporal Variation ◽  
Fish Assemblages ◽  
Fish Fauna ◽  
Small Scale ◽  
Eastern Region ◽  
Faunal Composition ◽  
Spatial Structuring ◽  
Long Term Changes ◽  
Spatio Temporal

Comprehensive assessment of spatio–temporal variation in assemblages, particularly relating to management and conservation efforts, should include examination of variation across scales. The present study investigated spatio–temporal variation at various scales in the fish fauna of Port Phillip, Australia, over 17 years. There were significant increases in diversity and changes in faunal composition in the most recent study, compared with 17 (+38%) and 7 (+151%) years ago. No significant year-to-year differences and no fortnightly differences within a season were found, supporting the notion of long-term changes. However, inter-seasonal variation was significant, with diversity highest in summer and lowest in winter (42.3% of summer diversity), illustrating substantial variation only at particular scales. The spatial structuring of assemblages was consistent at all temporal scales over 17 years. Fish assemblages and diversity varied significantly among sites and regions, but diversity was always highest on reefs in the eastern region of Port Phillip. However, the majority of spatial variation occurred among replicate transects (up to 75% of overall variation). Despite the high degree of small-scale spatio–temporal variability, the results provide evidence of long-term changes in faunal composition and diversity within the bay. Moreover, the results underline the necessity for multi-scalar approaches in ecological studies like abundance assessments.

Long-term changes on the structure of fish assemblages in the Lobo-Broa reservoir, Brazil

2018 ◽  
Vol 22 (1) ◽  
Author(s):  
André Luís Sanchez ◽  
Kenzo Gabriel Matsubara ◽  
Evaldo Luiz Gaeta Espíndola
Keyword(s):  
Fish Assemblages ◽  
Long Term Changes

Long-Term Changes in the Fish Assemblages of the Big Blue River Basin 40 Years after the Construction of Tuttle Creek Reservoir

2002 ◽  
Vol 105 (3 & 4) ◽  
pp. 193-208 ◽  
Author(s):  
Keith B. Gido ◽  
Christopher S. Guy ◽  
Timothy R. Strakosh ◽  
Randal J. Bernot ◽  
Kristen J. Hase ◽  
...  
Keyword(s):  
River Basin ◽  
Fish Assemblages ◽  
Long Term Changes
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