Environmental correlates of species richness for native freshwater fish in Oregon, U.S.A.

Rathert, Daniel E.; White, Denis; Sifneos, Jean C.; Hughes, Robert M.

doi:10.1046/j.1365-2699.1999.00274.x

Cited by 86 publications

(65 citation statements)

References 72 publications

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“…Multiple linear regression was used to identify stream habitat and land cover variables that were related to invertebrate variables (exclusive of individual taxa densities). In regression analysis, all-subsets variable selection (Rathert et al, 1999;Ramsey and Schafer, 2002) was first used to select the set of stream habitat variables that best explained variation in each invertebrate assemblage variable. For each invertebrate variable, the best regression model was considered to be the one in which parameter coefficients for all stream habitat variables were significantly different (P # 0.05) from zero, and that had lowest values for Mallow's Cp statistic and Akaike's Information Criterion (Ramsey and Schafer, 2002).…”

Section: Discussionmentioning

confidence: 99%

Land Use, Stream Habitat and Benthic Invertebrate Assemblages in a Highly Altered Iowa Watershed

Herringshaw

Stewart

Thompson

et al. 2011

The American Midland Naturalist

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Knowledge of relationships between land cover (i.e., land use) and abiotic and biotic features of headwater streams enhances our ability to predict and effectively assess conditions in a variety of aquatic ecosystems. We evaluated land use effects on stream condition in an Iowa watershed dominated by intensive row crop agriculture and low-intensity urban development by quantifying relationships among land cover, stream invertebrate assemblages and other stream biophysical characteristics (i.e., invertebrate habitat) at 29 sites. On average, 81% of subbasin land cover was agricultural and 6% of land cover was urban across study sites. High nitrate concentrations (range = 5.6-29.0 mg/L) and high relative abundance of oligochaetes and chironomid midges reflected degraded conditions at all sites. However, agriculture and urban land use appeared to have different effects on stream features. Nitrate concentrations were positively related to agricultural land cover, and turbidity and nitrate concentrations were negatively related to urban land cover (P ≤ 0.05). Invertebrate densities and taxonomic diversity (i.e., total taxa richness, % EPT) were also positively related to agricultural land cover and negatively related to urban land cover. Regardless of land use, highest invertebrate abundance and taxonomic diversity occurred at sites with abundant coarse particulate organic matter, plants and coarse inorganic substrate. Relationships between land cover and invertebrate variables were strong at both local and subbasin measurement scales. Based on invertebrate assemblages, which integrate multiple instream features, we conclude that urban land use had greater adverse effect on stream condition than agriculture in our study watershed. ABSTRACT.-Knowledge of relationships between land cover (i.e., land use) and abiotic and biotic features of headwater streams enhances our ability to predict and effectively assess conditions in a variety of aquatic ecosystems. We evaluated land use effects on stream condition in an Iowa watershed dominated by intensive row crop agriculture and lowintensity urban development by quantifying relationships among land cover, stream invertebrate assemblages and other stream biophysical characteristics (i.e., invertebrate habitat) at 29 sites. On average, 81% of subbasin land cover was agricultural and 6% of land cover was urban across study sites. High nitrate concentrations (range 5 5.6-29.0 mg/L) and high relative abundance of oligochaetes and chironomid midges reflected degraded conditions at all sites. However, agriculture and urban land use appeared to have different effects on stream features. Nitrate concentrations were positively related to agricultural land cover, and turbidity and nitrate concentrations were negatively related to urban land cover (P # 0.05). Invertebrate densities and taxonomic diversity (i.e., total taxa richness, % EPT) were also positively related to agricultural land cover and negatively related to urban land cover. Regardless of land use, highest invertebr...

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Section: Discussionmentioning

confidence: 99%

Land Use, Stream Habitat and Benthic Invertebrate Assemblages in a Highly Altered Iowa Watershed

Herringshaw

Stewart

Thompson

et al. 2011

The American Midland Naturalist

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“…TAN heavily contributed in dividing cluster I into two parts; the thermal range appeared to be important in the present study partly because of its vast variability (21.2 °C-56.1 °C). Since fish are poikilothermal animals, they will suffer considerably from the environment temperature change as demonstrated on some European freshwater fish (Buisson et al 2008;Pont et al 2005) and American species (Rathert et al 1999). Although each fish species has a thermal preference and can usually be characterized by a tolerance range of temperatures varying by a few degrees, they are flexible and can adapt to a certain extent by physiological adjustments or behavioral thermoregulation.…”

Section: Potential Determinants Of Lake Fish Diversity and Assemblagesmentioning

confidence: 99%

Large scale patterns in the diversity of lake fish assemblages in China and the effect of environmental factors

Guo¹,

Chen²,

Lek³

et al. 2016

fal

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Understanding variations in species diversity and assemblage related with environments at a large spatial scale has been a central aim of community ecology for decades. The current study contributes to building the global perspective on the lake fish diversity and assemblage in China, and identifying the potential determinants, based on the multi-species approach fitted by Multivariate Regression Trees. A total of 425 fish species and subspecies recorded in 135 lakes across the mainland China were modelled with 19 potential environmental factors. Five fish assemblages were then patterned according to the similarity of fish composition and determinants. Diversity partition (alpha diversity and gamma diversity) was employed to compare the differentiation of fish diversity in Chinese lakes in multiple spatial scales. A significant difference between each assemblage was found: alpha diversity was lower in plateau lakes than in plain lakes. However, gamma diversity on plateaus was higher than any other regions. Altitude, minimum temperature of the coldest month, annual temperature range and precipitation during the driest month were the most important determinants affecting fish assemblages and diversity. Consequently, our findings inform the potential implications of fish species conservation and natural resources management.

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“…For instance in Northern lakes, the air temperature could cover a large range annually from warm season to cold season (Wang and Dou, 1998). Some European freshwater fishes (Buisson et al, 2010;Pont et al, 2005;Mann, 1996) and American species (Rathert et al, 1999) were also demonstrated to be great impacted by the TAR. Although each fish species has a thermal preference characterized by a tolerance range of temperatures, they are flexible and can adapt to a certain extent with physiological adjustments (Johnson and Kelsch, 1998) or behavioral thermoregulation (Heggenes et al, 1993).…”

Section: Prediction and Determinants Of Fish Species Assemblages In Cmentioning

confidence: 99%

Predicting fish species richness and assemblages with climatic, geographic and morphometric factors: A broad-scale study in Chinese lakes

Guo

Lek

et al. 2015

Limnologica

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a b s t r a c tThe present study was designed to investigate the relative importance of climatic (temperature and precipitation), geographic (altitude) and morphometric (lake area) factors in predicting fish species richness and assemblages in Chinese lakes at a large spatial scale. Two recursive partitioning tree-based approaches: Classification and Regression Trees (CARTs) and Multivariate Regression Trees (MRTs) were employed to generate predictive models respectively. Six fish assemblages were thus defined from the MRT model. The results indicated that lake altitude was the main determinant for predicting fish assemblages in Chinese lakes (30.43%), followed by precipitation of the driest month (10.47%), temperature annual range (3.62%) and annual mean temperature (3.15%). Validated CART model implied that precipitation of driest month, maximum temperature of warmest month and lake area were the main predictors in determining fish species richness patterns. Overall, our results indicated that the altitudinal extent and range of climatic variation was sufficient to overshadow the area effect in predicting fish species richness and assemblages in Chinese lakes. At the macroecological scale, the effect of temperature and precipitation on fish richness and assemblages also suggests future changes in fish diversity as a consequence of climate change.

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Environmental correlates of species richness for native freshwater fish in Oregon, U.S.A.

Cited by 86 publications

References 72 publications

Land Use, Stream Habitat and Benthic Invertebrate Assemblages in a Highly Altered Iowa Watershed

Land Use, Stream Habitat and Benthic Invertebrate Assemblages in a Highly Altered Iowa Watershed

Large scale patterns in the diversity of lake fish assemblages in China and the effect of environmental factors

Predicting fish species richness and assemblages with climatic, geographic and morphometric factors: A broad-scale study in Chinese lakes

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