Fish assemblage structure in tributaries of the Meia Ponte River, Goiás, Brazil

Fialho, Afonso Pereira; Oliveira, Leandro Gonçalves; Tejerina‐Garro, Francisco Leonardo; Gomes, Luiz Carlos

doi:10.1590/s1679-62252007000100007

Cited by 14 publications

(11 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Exploration of fish assemblages along a short spatial scale in the uppermost part of the Paraná River also demonstrated a great ichthyofauna heterogeneity (Fialho et al, 2007). In our study, with only four species, the similarity percentage analysis was able to explain almost 60% of the total dissimilarity between any pair of lakes.…”

Section: Dominance Persistence and Assemblage Structuresupporting

confidence: 53%

Patterns in fish species composition and assemblage structure in the upper Salado River lakes, Pampa Plain, Argentina

Rosso

Quirós

2010

Neotrop. ichthyol.

View full text Add to dashboard Cite

The Pampa Plain, in the central region of Argentina, is mostly drained by the Salado River. The fish fauna of this river is mostly known from field collections in lower reach lakes. Consequently, we aimed to explore the composition and structure of the fish assemblages in the upper Salado River lakes. Patterns in dominance and persistence of species and assemblage level attributes were correlated with environmental and human activity-derived (NO 3 :NH 4 ) variables. Overall, 19,913 individuals of 17 species included in 5 orders and 11 families were collected. Several species are first records for the upper Salado River lakes. There was a marked proliferation of species in the family Characidae. Conversely, the remainder 10 families were only represented by one or two species. The species composition along the study lakes changed slightly but their relative contribution to the total fish collected (dominance) varied greatly. Rather few species were present in all collections suggesting an important interannual variability in assemblage stability. The gradient in water conductivity was an important factor for the persistence of particular species in the lakes. The gradients in water conductivity and NO 3 :NH 4 ratio were associated with particular fish communities dominated by different groups of species. These results suggest that even when broad management and conservation strategies should encompass the system as a whole, lake-specific approaches must also be addressed. Overall, our results highlight that human impacts on surface waters may interact with environmental factors to influence the dynamics of fish species and the structure of their communities.A planície pampeana, na região central da Argentina, é em grande parte drenada pelo rio Salado. A ictiofauna desse rio é conhecida principalmente pelos estudos conduzidos nos lagos dos segmentos inferiores do rio. Em consequência, procuramos examinar a composição e a estrutura das assembleias de peixes dos lagos do alto rio Salado. Os padrões na dominância e persistência das espécies e os atributos das assembleias de peixes foram correlacionados com variáveis ambientais e variáveis indicadoras de perturbações antropogênicas (NO 3 :NH 4 ). Foram coletados 19913 indivíduos de 17 espécies pertencentes a 5 ordens e 11 famílias. Várias espécies foram registradas pela primeira vez para as lagoas do alto rio Salado. Houve uma marcada proliferação de espécies da família Characidae. Em contraste, as 10 famílias de peixes restantes foram representadas por uma ou duas espécies. A composição de espécies variou pouco ao longo dessas lagoas mas sua contribuição ao total de peixes coletados (dominância) foi muito variável. Poucas espécies estiveram presentes em todas as coletas, sugerindo uma importante variação interanual na estabilidade da assembleia de peixes. O gradiente na condutividade elétrica da água foi importante fator para a persistência de algumas espécies nessas lagoas. A condutividade elétrica da água e o gradiente na relação NO 3 :NH 4 estiveram associados com...

show abstract

Section: Dominance Persistence and Assemblage Structuresupporting

confidence: 53%

Patterns in fish species composition and assemblage structure in the upper Salado River lakes, Pampa Plain, Argentina

Rosso

Quirós

2010

Neotrop. ichthyol.

View full text Add to dashboard Cite

show abstract

“…Rivers are highly variable environments, and are periodically subjected to unpredictable oscillations of their physical and chemical habitat (e.g., flow, temperature, dissolved oxygen, pH, and conductivity), and these fluctuations have been shown to affect the richness and structure of river fish assemblages (Tejerina-Garro et al, 2005). However, in the Neotropical regions alternating high and low water seasons influence habitat (Poff et al, 1997) and fish assemblages (Mérona & Gascuel, 1993) inclusive of the Meia Ponte River tributaries (Fialho et al, 2007). In this case, seasonality can be seen as a key factor switching on/off other environmental variables and increasing or inhibiting environmental modifications (Agostinho & Zalewski, 1995).…”

Section: Discussionmentioning

confidence: 99%

Fish-habitat relationship in a tropical river under anthropogenic influences

et al. 2007

View full text Add to dashboard Cite

This study analyzes the interaction of fish assemblages with 14 physicochemical and hydrogeomorphological variables at 31 sampling stations along the watershed of the Meia Ponte River, Upper Paraná Basin, Central Brazil, during low and high water seasons in 2001. This river and its tributaries drain both urban and agricultural areas. Fish were caught with sieves along a 100 m stretch demarcated in every sampling site, where environmental variables were also measured. A total of 3508 individuals belonging to 31 species were collected. Fish abundance and environmental data matrices were submitted to a multivariate analysis of co-inertia. Two axes were retained for interpretation (total variance explained = 63.65%) indicating that pH, water temperature, conductivity, chemical dissolved oxygen, and turbidity, all have an influence on fish assemblage structure. The co-structure found (fish assemblages and physicochemical variables) is correlated in both of the axes considered (r = 0.73 and r = 0.68, respectively), and is statistically significant (Monte Carlo test, P \ 0.001). This co-structure is regulated by seasonality, but is influenced by fish habitat preferences, spawning and available food, the extent and effects of anthropogenic activities (domestic sewage, agriculture, ranching, urban areas) and the position of sampling stations along the watershed.

show abstract

“…Is worthwhile to mention some studies conducted in the States of Goiás (Benedito-Cecilio et al, 2004;Fialho et al, 2007;Araújo & Tejerina-Garro, 2007) and Mato Grosso do Sul (Súarez, 2008;Súarez & Lima-Júnior, 2009). In the Distrito Federal should be emphasized the studies of Viana (1989), Ribeiro (1994), and Aquino et al (2009).…”

Section: Introductionmentioning

confidence: 99%

Structure and integrity of fish assemblages in streams associated to conservation units in Central Brazil

Couto

Aquino

2011

Neotrop. ichthyol.

View full text Add to dashboard Cite

This study aims to characterize the spatial and seasonal distribution of the fish assemblage and evaluate the integrity of streams in a sustainable use area that includes integral protection conservation units in Distrito Federal, Central Brazil (Cerrado biome). For the study, 12 stretches of 8 streams were sampled in 2008 (dry season) and 2009 (wet season). For that evaluation was estimated the Physical Habitat Index (PHI), vegetation cover (VC), pH, dissolved oxygen, turbidity, and conductivity. We recorded 22 species, about eight undescribed species, by a total of 2,327 individuals. The most representative families in number of species were Characidae (31.8%), Loricariidae (31.8%), and Crenuchidae (13.6%). Knodus moenkhausii was the most abundant species with 1,476 individuals, added to Astyanax sp., Phalloceros harpagos, and Hasemania sp. they represent over 95% of the total abundance. The species Astyanax sp. (occurring in 79.2% of the stretches) and K. moenkhausii (50.0%) were considered constant in both seasons. The longitudinal gradient (River Continuum) exerts a strong influence on the studied assemblage. According to CCA, the variables that structure the fish assemblage are based on aspects related to water volume and habitat complexity. No seasonal variation in richness, diversity, abundance, and mass were detected. A cluster analysis suggests a separation of species composition between the stretches of higher and lower orders, which was not observed for seasonality. The streams were considered well preserved (mean PHI 82.9±7.5%), but in some stretches were observed anthropogenic influence, detected in the water quality and, mainly, on the riparian vegetation integrity. The exotic species Poecilia reticulata was sampled in the two stretches considered most affected by anthropogenic activities by PHI, conductivity, and VC.Esse estudo teve como objetivo caracterizar a distribuição espacial e sazonal da taxocenose de peixes e avaliar a integridade dos córregos de uma área de uso sustentável que inclui unidades de conservação de proteção integral no Distrito Federal, Brasil Central (bioma Cerrado). Para o estudo, foram amostrados 12 trechos de oito cursos d'água em 2008 (estação seca) e 2009 (estação chuvosa). Para essa avaliação foram utilizados o Índice Físico do Habitat (IFH), cobertura vegetal (CV), pH, oxigênio dissolvido, turbidez e condutividade. Foram coletadas 22 espécies, sendo oito não descritas, em um total de 2.327 indivíduos. As famílias mais representativas em número de espécies foram Characidae (31,8%), Loricariidae (31,8%) e Crenuchidae (13,6%). Knodus moenkhausii foi a espécie mais abundante, com 1.476 indivíduos, que juntamente com Astyanax sp., Phalloceros harpagos e Hasemania sp. representaram mais de 95% da abundância total. As espécies Astyanax sp. (ocorrendo em 79,2% dos trechos) e K. moenkhausii (50,0%) foram consideradas constantes nas duas estações. O gradiente longitudinal (rio Contínuo) exerce forte influência na taxocenose estudada. De acordo com a CCA, as variáveis que estru...

show abstract

Fish assemblage structure in tributaries of the Meia Ponte River, Goiás, Brazil

Cited by 14 publications

References 33 publications

Patterns in fish species composition and assemblage structure in the upper Salado River lakes, Pampa Plain, Argentina

Patterns in fish species composition and assemblage structure in the upper Salado River lakes, Pampa Plain, Argentina

Fish-habitat relationship in a tropical river under anthropogenic influences

Structure and integrity of fish assemblages in streams associated to conservation units in Central Brazil

Contact Info

Product

Resources

About