Estimating migratory fish distribution from altitude and basin area: a case study in a large Neotropical river

Barradas, José Ricardo S; Silva, Lucas G.; Harvey, Bret C.; Fontoura, Nelson Ferreira

doi:10.1111/fwb.12003

Cited by 9 publications

(10 citation statements)

References 14 publications

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“…Our results fitted very well with previous research that showed altitude considerably affects fish distribution in aquatic ecosystems (Amarasinghe & Welcomme 2002;Yoon et al 2011;Barradas et al 2012;Stojkovic et al 2013). However, altitude is a complex variable: it can cause direct and indirect effects on fish distribution.…”

Section: Potential Determinants Of Lake Fish Diversity and Assemblagessupporting

confidence: 91%

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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Section: Potential Determinants Of Lake Fish Diversity and Assemblagessupporting

confidence: 91%

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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“…Despite the intense effort to map and organize the occurrences of aquatic biota in databases, the challenge is related to the unavailability of detailed environmental layers, especially for aquatic environments in small scales. However, successful examples of inference concerning distributional patterns with relative few predictors are already described for freshwater fish (Alves and Fontoura, 2009;Barradas et al, 2012) by using LOGIT functions, showing that satisfactory predictions could be achieved with relatively few key environmental predictors.…”

Section: Discussionmentioning

confidence: 99%

Modeling habitat suitability of the invasive clam Corbicula fluminea in a Neotropical shallow lagoon, southern Brazil

et al. 2016

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This study aimed to model the habitat suitability for an invasive clam Corbicula fluminea in a coastal shallow lagoon in the southern Neotropical region (-30.22, -50.55). The lagoon (19km 2 , maximum deep 2.5m) was sampled with an Ekman dredge in an orthogonal matrix comprising 84 points. At each sampling point, were obtained environmental descriptors as depth, organic matter content (OMC), average granulometry (Avgran), and the percentage of sand (Pcsand). Prediction performance of Generalized Linear Models (GLM), Generalized Additive Models (GAM) and Boosted Regression Tree (BRT) were compared. Also, niche overlapping with other native clam species (Castalia martensi, Neocorbicula limosa and Anodontites trapesialis) was examined. A BRT model with 1400 trees was selected as the best model, with cross-validated correlation of 0.82. The relative contributions of predictors were Pcsand-42.6%, OMC-35.8%, Avgran-10.9% and Depth-10.8%. Were identified that C. fluminea occur mainly in sandy sediments with few organic matter, in shallow areas nor by the shore. The PCA showed a wide niche overlap with the native clam species C. martensi, N. limosa and A. trapesialis.Keywords: habitat suitability, spatial distribution models, model selection, invasive species. Modelagem da adequabilidade de habitat do bivalve invasorCorbicula fluminea em uma lagoa rasa Neotropical Resumo O objetivo de deste estudo foi modelar a adequabilidade de habitat do bivalve invasor Corbicula fluminea em uma lagoa costeira na região Neotropical (-30.22, -50.55). A lagoa (19km 2 , 2,5 m de profundidade máxima) foi amostrada com uma draga Ekman em uma matriz ortogonal compreendendo 84 pontos. Em cada ponto de amostragem foram obtidos descritores ambientais como a profundidade, teor de matéria orgânica (OMC), granulometria média (Avgran), e a percentagem de areia (Pcsand). O poder preditivo dos métodos Modelos Lineares Generalizados (GLM), Modelos Aditivos Generalizados (GAM) e Boosted Regression Trees (BRT) foram comparados. Além disso, a sobreposição de nicho com espécies de moluscos nativos (Castalia martensi, Neocorbicula limosa e Anodontites trapesialis) foi examinada. Um modelo BRT com 1.400 árvores foi selecionado como o melhor modelo, com correlação da validação cruzada de 0,82. As contribuições relativas dos preditores foram Pcsand-42,6%, OMC-35,8%, Avgran-10,9% e profundidade-10,8%. Foi demonstrado que C. fluminea está associada a sedimentos arenosos com pouca matéria orgânica, em áreas rasas próximo às margens. A PCA mostrou uma ampla sobreposição de nicho com as espécies de moluscos nativos C. martensi, N. limosa e A. trapesialis.Palavras-chave: adequabilidade de habitat, modelos de distribuição espacial, seleção de modelo, espécie invasora.

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“…Generally, altitude could generate direct barrier effects on distribution and life history traits of organisms, e.g. limit the colonization and speciation of fish (Yoon et al, 2011;Barradas et al, 2012;Stojkovic et al, 2013). As a complex variable, altitude can also bring indirect impacts on fish assemblages due to collinearity with climatic factors (Brucet et al, 2013).…”

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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Estimating migratory fish distribution from altitude and basin area: a case study in a large Neotropical river

Cited by 9 publications

References 14 publications

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

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

Modeling habitat suitability of the invasive clam Corbicula fluminea in a Neotropical shallow lagoon, southern Brazil

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

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