Predicting freshwater fish distributions using landscape-level variables

Argent, David G.; Bishop, Joseph A.; Stauffer, Jay R.; Carline, Robert F.; Myers, Wayne L.

doi:10.1016/s0165-7836(02)00076-0

Cited by 31 publications

(22 citation statements)

References 38 publications

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“…Hence, these are satisfactory descriptors in evaluating the levels of environmental aquatic degradation . Thus it is presumed that undisturbed water courses present greater richness, species diversity and a relatively balanced distribution of individuals (Navas-Pereira & Henrique, 1996;Gafny et al, 2000;Argent et al, 2003;Cunico et al, 2006;Otero et al, 2006). In this study, this partially occurs in terms of fish richness as certain stream stretches located in preserved areas present a higher richness average (P1, 23 species; P4, 20) than stretches located in impacted areas (NP6, 17; NP5, 15; NP1, 11; NP2, 11; NP3, 9 species, respectively), with the exception of the NP4 stream (26 species), where the diversity index displayed the highest value among the stream stretches sampled.…”

Section: Discussionmentioning

confidence: 99%

Changes in the structure of fish assemblages in streams along an undisturbed-impacted gradient, upper Paraná River basin, Central Brazil

Dias

Tejerina‐Garro

2010

Neotrop. ichthyol.

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The João Leite River is located in the upper Paraná basin, Central Brazil. It drains areas covered by Cerrado vegetation interspersed with urban and agricultural areas. This study aims to asses changes of the fish assembleges structure along a undisturbed-impacted gradient in ten stream stretches using ecological descriptors, a similarity index and the abundancebiomass relationship (ABC curves). The fish were collected during the dry period using electrofishing gear in stretches of 50 m. Results show that the environmental variation observed along the undisturbed-impacted gradient considered influences on fish assemblage structure. Both richness and diversity differences between fish assemblages are partially influenced by stream stretch orthonian order and anthropogenic impacts. ABC curves classified six stream stretches located in preserved or impacted areas as undisturbed while four stretches were classified as disturbed. This is attributed to the influence of the undisturbed habitat within the conservation unit and the presence of K-or r-strategist species. This type of study contributes to an understanding of the effects of aquatic environment conservation on the Brazilian Cerrado core area, where the choice of conservation areas prioritizes terrestrial over aquatic aspects.O ribeirão João Leite está localizado no alto da bacia do rio Paraná, Brasil Central, onde drena áreas cobertas por vegetação tipo Cerrado intercaladas com áreas urbanas e agrícolas. Este estudo objetiva avaliar as mudanças na estrutura das assembleias de peixes ao longo de um gradiente ambiental (não perturbado-impactado) em trechos de dez riachos utilizando descritores ecológicos, um índice de similaridade e a relação abundância-biomassa (curvas ABC). Os peixes foram coletados durante o período da estiagem em trechos de 50 m utilizando a pesca elétrica. Os resultados indicam que a variabilidade ambiental observada ao longo do gradiente considerado influencia na estrutura das assembleias de peixes. As diferenças observadas entre a riqueza e diversidade das assembleias de peixes são parcialmente influenciadas pela ordem do riacho e os impactos antropogênicos. As curvas ABC classificam seis trechos localizados em áreas preservadas ou impactadas como não perturbados e quatro como perturbados. Isto é atribuído à influência do habitat preservado presente na unidade de conservação e à presença de espécies com estratégias K-ou r-. Este tipo de estudo contribui ao entendimento dos efeitos da conservação do ambiente aquático na área central do Cerrado brasileiro, onde as escolhas de áreas de conservação dão prioridade aos aspectos terrestres em detrimento dos aquáticos.

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Section: Discussionmentioning

confidence: 99%

Changes in the structure of fish assemblages in streams along an undisturbed-impacted gradient, upper Paraná River basin, Central Brazil

Dias

Tejerina‐Garro

2010

Neotrop. ichthyol.

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“…Stream size (represented here by watershed area) strongly influences stream fish assemblages [56][57][58][59][60], and watershed area was important in all our models. Ecoregion, latitude, and longitude all are related and indicate a strong location effect on the fish species.…”

Section: Importance Of Watershed Attributesmentioning

confidence: 94%

Species Distribution Models of Freshwater Stream Fishes in Maryland and Their Implications for Management

Maloney

Weller

Michaelson

et al. 2012

Environ Model Assess

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Species distribution models (SDMs) are often used in conservation planning, but their utility can be improved by assessing the relationships between environmental and species response variables. We constructed SDMs for 30 stream fishes of Maryland, USA, using watershed attributes as environmental variables and presence/absence as species responses. SDMs showed substantial agreement between observed and predicted values for 17 species. Most important variables were natural attributes (e.g., ecoregion, watershed area, latitude/ longitude); land cover (e.g., %impervious, %row crop) was important for three species. Focused analyses on four representative species (central stoneroller, creek chub, largemouth bass, and white sucker) showed the probability of presence of each species increased non-linearly with watershed area. For these species, SDMs built to predict absent, low, and high densities were similar to presence/absence predictions but provided probable locations of high densities (e.g., probability of high-density creek chub decreased rapidly with watershed area). We applied SDMs to predict suitability of watersheds within the study area for each species. Maps of suitability and the environmental and species response relationships can help develop better management plans.

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“…Habitat disturbance has an important role in constraining the types of ecological processes and patterns observed in streams (Ward & Stanford, 1983;Power et al, 1988;Resh et al, 1988;Poff & Ward, 1990). Understanding the habitat requirements of each species and the relationship with environmental variables is critical to comprehending their ecology in natural systems and to evaluate possible change scenarios (Argent, Bishop, Stauffer, Carline, & Myers, 2003;Jowett, Richardson, & Bonnett, 2005).…”

Section: Introductionmentioning

confidence: 99%

Spatial Pattern and Habitat Requirements of Galaxias maculatus in the Last Un-Interrupted Large River of Patagonia: A Baseline for Management

Tagliaferro¹,

Quiroga²,

Pascual³

2014

ENRR

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The relationship between the native Galaxias maculatus and environmental variables was studied in 52 sites located along 306 km of the main stemof the Santa Cruz River, the second largest river in Argentinean Patagonia. The abundance varied along the river, with three general sections clearly defined: upstream with minimum abundance increasing towards midstream and downstream areas. Distance to the sea and river wet width which were negatively significantly associated with abundance,and maximum depth explained the abundance in a polynomial shape -achieving a total explanation of 41.1%. The best predictive model also combined the river sinuosity.Our results suggested that the construction of two proposed hydroelectric dams will modify these variables, which might generate changes in G. maculatus distribution. The information obtainedduring the present study represents valuable information for conservation management of this species.

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Predicting freshwater fish distributions using landscape-level variables

Cited by 31 publications

References 38 publications

Changes in the structure of fish assemblages in streams along an undisturbed-impacted gradient, upper Paraná River basin, Central Brazil

Changes in the structure of fish assemblages in streams along an undisturbed-impacted gradient, upper Paraná River basin, Central Brazil

Species Distribution Models of Freshwater Stream Fishes in Maryland and Their Implications for Management

Spatial Pattern and Habitat Requirements of Galaxias maculatus in the Last Un-Interrupted Large River of Patagonia: A Baseline for Management

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