Fish Species Composition and Lake Abiotic Variables in Relation to the Abundance and Size Structure of Cladoceran Zooplankton

1993 ◽  
Vol 50 (3) ◽  
pp. 638-647 ◽  
Author(s):  
Marco A. Rodríguez ◽  
Pierre Magnan ◽  
Sylvain Lacasse
Keyword(s):  
Species Composition ◽  
Fish Species ◽  
Brook Trout ◽  
Redundancy Analysis ◽  
Abiotic Factors ◽  
Analysis Of Covariance ◽  
Numerical Density ◽  
White Sucker ◽  
Abiotic Variables ◽  
Fish Species Composition

Redundancy analysis and a multiple regression approach to analysis of variance and analysis of covariance were used to evaluate the influence of fish species composition and abiotic variables on the numerical density, biomass, and mean length of individual cladoceran taxa from 43 Laurentian Shield lakes. Cladoceran assemblage structure was still associated with fish species composition when potentially confounding effects of abiotic variables were accounted for by partial redundancy analysis. Cladoceran abundances were strongly related to the occurrence of white sucker (Catostomus commersoni) and lake maximum depth; mean lengths were influenced most by white sucker, water transparency, lake volume, and sampling date. The abundance of bosminids and length of Holopedium were strongly related to the occurrence of white sucker even when the influence of abiotic factors was removed by regression. In lakes with white sucker and brook trout (Salvelinus fontinalis), Holopedium mean length decreased and bosminid abundance increased fourfold relative to lakes with brook trout only; large (>1.2 mm) Holopedium abundance was reduced by 76–81%, suggesting that size-selective predation occurred. The increase in bosminid abundance in the presence of white sucker may have been a response to diminished competition by large Holopedium, but density compensation was not observed.

scholarly journals Comparison of Fish Species Composition Collected by Set Net at Hupo in Gyeong-Sang-Buk-Do, and Jangho in Gang-Won-Do, Korea

2014 ◽  
Vol 47 (4) ◽  
pp. 424-430 ◽  
Author(s):  
Jung-Ha Kang ◽  
Yi-Gyeong Kim ◽  
Jung-Youn Park ◽  
Jin-Koo Kim ◽  
Jung-Hwa Ryu ◽  
...  
Keyword(s):  
Species Composition ◽  
Fish Species ◽  
Fish Species Composition

Watershed-level sampling effort requirements for determining riverine fish species composition

2005 ◽  
Vol 62 (7) ◽  
pp. 1580-1588 ◽  
Author(s):  
Katherine L Smith ◽  
Michael L Jones
Keyword(s):  
Species Richness ◽  
Species Composition ◽  
Fish Species ◽  
Correlation Coefficients ◽  
Sampling Effort ◽  
Species Accumulation Curves ◽  
Targeted Sampling ◽  
Weak Negative Correlation ◽  
Fish Species Composition ◽  
Riverine Fish

Accurate assessments of watershed-level species composition are necessary for comparative ecological studies, ecosystem health assessments, monitoring, and aquatic conservation prioritization. Several studies have addressed sampling effort requirements for characterizing fish species composition at a section of stream, but none have examined watershed-level requirements. In the spring and summer of 2002, we extensively sampled nine Great Lakes watersheds to assess sampling-effort requirements. Sampling requirements increased with the targeted percentage of estimated species richness. Sampling 15–119 randomly selected reaches of stream, stratified by stream order, was on average sufficient to detect 80%–100% of estimated species richness. Watershed size (km2) and estimated species richness each showed a weak, negative correlation with sampling-effort requirements in our study streams, with Pearson's correlation coefficients of –5.06 and –0.590, respectively. Because of among-watershed variability in sampling effort requirements, field crews should plot species accumulation curves onsite to determine adequate inventory completion. Based on the difficulty of detecting the last 10% of species, random sampling should be conducted in conjunction with targeted sampling of rare species.

scholarly journals Fish species composition, distribution and community structure in the lower reaches of Ganjiang River, Jiangxi, China

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Maolin Hu ◽  
Chaoyang Wang ◽  
Yizhen Liu ◽  
Xiangyu Zhang ◽  
Shaoqing Jian
Keyword(s):  
Community Structure ◽  
Species Composition ◽  
Fish Species ◽  
Composition Distribution ◽  
Fish Species Composition

FISH SPECIES COMPOSITION IN THE RED RIVER AND ITS TRIBUTARIES IN THE YEN BAI PROVINCE, VIETNAM

2015 ◽  
Vol 60 (4) ◽  
pp. 97-103
Author(s):  
Nguyen Huu Duc ◽  
Tran Duc Hau ◽  
Ha Thi Thanh Hai
Keyword(s):  
Species Composition ◽  
Fish Species ◽  
Red River ◽  
Fish Species Composition

Estuarine characteristics, water quality and heavy metal contamination as determinants of fish species composition in intermittently open estuaries

2017 ◽  
Vol 68 (5) ◽  
pp. 941 ◽  
Author(s):  
K. O'Mara ◽  
A. Miskiewicz ◽  
M. Y. L. Wong
Keyword(s):  
Water Quality ◽  
Species Composition ◽  
Fish Species ◽  
Metal Contamination ◽  
Fish Assemblages ◽  
Anthropogenic Activities ◽  
Estuarine Fish ◽  
Fish Diversity ◽  
Eastern Australia ◽  
Fish Species Composition

Estuaries are critical aquatic environments that are used by many fish during their life cycle. However, estuaries often suffer from poor water quality as a result of anthropogenic activities. Fish diversity studies in estuaries are common, although few have examined whether correlations exist between water quality, metal contamination and fish assemblages. In the present study we investigated the effect of abiotic conditions, heavy metals and estuary characteristics on the abundance, diversity and composition of fish in four intermittently open estuaries along the Illawarra coast of south-eastern Australia. The heterogeneity of environmental conditions was reflected in the fish assemblages in each estuary. Environmental variables predicted fish species composition, and estuaries in particularly poor condition contained few species (estuarine residents) in high abundance, indicating their ability to acclimatise and survive in conditions that are hostile to other species. Overall, these findings demonstrate that estuarine fish assemblages may be useful indicators of estuary condition and reveal the importance of managing anthropogenic activities in the surrounding catchment to improve water quality so that biodiversity of fish can be restored in these estuarine environments.

Dietary Variation in a Freshwater Fish Species: Relative Contributions of Biotic Interactions, Abiotic Factors, and Spatial Structure

1994 ◽  
Vol 51 (12) ◽  
pp. 2856-2865 ◽  
Author(s):  
Pierre Magnan ◽  
Marco A. Rodríguez ◽  
Pierre Legendre ◽  
Sylvain Lacasse
Keyword(s):  
Spatial Structure ◽  
Freshwater Fish ◽  
Fish Species ◽  
Environmental Variables ◽  
Brook Trout ◽  
Diet Composition ◽  
Abiotic Factors ◽  
Biotic Interactions ◽  
Relative Contribution ◽  
Dietary Variation

We used multivariate analyses to examine which variables among the environmental and spatial components can best account for dietary variation in a freshwater fish, brook trout, Salvelinus fontinalis. The diet composition of brook trout was quantified in 37 lakes of the Laurentian Shield, Québec, Canada. Among the 25 measured environmental variables, fish species composition, sampling date, macrophyte abundance, and trout body length were the best predictors of diet composition. The total variation in diet composition was partitioned into four components: pure environmental 21.6%, pure spatial 23.2%, shared 19.9%, and unexplained 35.3%. A significant spatial trend in diet composition existed even after accounting for the main effects measured by the environmental variables. The two sets of spatial variables, when combined with the environmental descriptors, extracted different components of the dietary variation. The study allowed us to (1) highlight the role of spatial structure in diet variation of brook trout, (2) determine the relative contribution of both environmental and spatial components, and (3) generate testable hypotheses concerning mechanisms underlying the observed structure. Dependent variables other than diet composition, such as the density of different species at different sampling sites, can be used within the same statistical framework in studies of community ecology.

scholarly journals Effects of fish species composition on Diphyllobothrium spp. infections in brown trout - is three-spined stickleback a key species?

2016 ◽  
Vol 39 (11) ◽  
pp. 1313-1323 ◽  
Author(s):  
J A Kuhn ◽  
A Frainer ◽  
R Knudsen ◽  
R Kristoffersen ◽  
P-A Amundsen
Keyword(s):  
Species Composition ◽  
Brown Trout ◽  
Fish Species ◽  
Key Species ◽  
Fish Species Composition
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