O uso de atributos das assembléias de peixes para avaliar a integridade biótica em hábitats rasos das Baías de Antonina e Paranaguá, Paraná

Otero, Marcelo Eduardo Barril; Spach, Henry Louis; Queiroz, Guilherme Mac Laren Nogueira de; Santos, Cesar; Silva, Andre Luiz Campos da

doi:10.5380/abpr.v35i0.6875

Cited by 7 publications

(11 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…According to Otero et al (2006) and Yemane et al (2005), the ABC curves indicate that in an undisturbed water course, large fish represent an amount which is samall in terms of the total abundance, but sufficient in terms of biomass thus, the biomass curve graphically overlaps the abundance curve. This is the case of two of the four stream stretches (P1 and P2) present in the PEAMP area in the two years under consideration.…”

Section: Discussionmentioning

confidence: 99%

“…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%

See 1 more Smart Citation

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.

View full text Add to dashboard Cite

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.

show abstract

Section: Discussionmentioning

confidence: 99%

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.

View full text Add to dashboard Cite

show abstract

“…This ratio relates the overlap of the abundance and biomass curves and allows an interpretation of the environmental condition based on the fauna (WARWICK et al, 1987;OTERO, 2006;BRAGA, 2008). This is a method for assessing the status of polluted areas based in local populations, without the need for reference of the temporal or spatial series of controlled samples (WARWICK, 1986).…”

Section: Discussionmentioning

confidence: 99%

“…In the Brazilian coast, ecological quality assessment using indices were applied to estuarine environments such as the Paranaguá Estuarine Complex -Paraná (FALCÃO et al, 2008;OTERO et al, 2006), and the Todos os Santos Bay -Bahia (DIAS et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Ichthyofauna as an environmental quality indicator of the Bertioga Channel, São Paulo (Brazil)

et al. 2017

View full text Add to dashboard Cite

Ichthyofauna as an environmental quality indicator of the Bertioga Channel, São Paulo (Brazil)The aim of this study was to investigate the ichthyofauna structure in the region of the north outfall of the Bertioga Channel (São Paulo, Brazil) and the possible effects of the environmental quality loss. The samples were collected in a monthly basis, from September to December 2005, at two oceanographic stations with an otter-trawl. The fish fauna structure was evaluated by ecological indicators and the environmental quality evaluated by the ABC analysis and the Estuarine Fish Communities Index (EFCI). A total of 1553 individuals from 50 species were sampled. Ariidae and Sciaenidae amounted to 60 % and Cathorops spixii represented 36 % of all specimens collected. The highest richness and ecological diversity were recorded in December, while the highest numerical abundance was found in October. The majority of the species were represented by juveniles. The cluster analysis and canonical correspondence analysis showed a consistent and clear difference between the sampling stations, and the abiotic factors analyzed (temperature, depth and salinity) do not seem to have influence on the community structure. The ABC analysis suggested a moderate disturbed environment and the EFCI allowed classifying the area as "poor", due to the 12 metrics analyzed, concerning the reduction of the species diversity, composition and abundance, and modifications in the nursery function and trophic integrity of the area.

show abstract

“…Silva et al (2004) also observed a low abundance of zooplankton in this same area, which was attributed to the resuspension of sediment (and increased turbidity) by dredging activities (Neumann et al, 1998) that affect primary productivity by reducing light penetration (Koening et al, 2002). When studying fish communities, Otero et al (2006) and Queiroz et al (2007) also found decreased richness and increased dominance of a few species caused by the dredging process.…”

Section: Ichthyoplankton Assemblagementioning

confidence: 86%

Influence of oceanographic seasonality and dredging activities on the fish larvae assemblage in the Port of Aratu, Todos os Santos Bay

Maltez¹,

Mafalda²,

Leitão³

2014

Braz. J. Aquat. Sci. Technol.

View full text Add to dashboard Cite

The aim of this study was to evaluate the impact of dredging activity to deepen the Port of Aratu on fish larvae assemblage structure. Samples were collected before, during and after dredging and at 6 sampling stations during both the flood and ebb tide (only during the dry season). Ichthyoplankton was collected through surface hauls using a bongo net with a 500μm mesh size. Oceanographic variables (temperature and salinity), water quality (dissolved oxygen and turbidity) and nutrients (ammonia and total phosphorus) were obtained simultaneously. During dredging, the lowest density of eggs and larvae, family richness and diversity were registered, with a subsequent recovery observed after dredging. Multivariate ordination showed the great differences between samplings, which demonstrated temporal variability in the distribution and abundance of ichthyoplankton in the port of Aratu (Bahia, Northeastern Brazil), in response to the seasonality of oceanographic characteristics of the water masses and changes in water quality, possibly associated with dredging activities.

show abstract

O uso de atributos das assembléias de peixes para avaliar a integridade biótica em hábitats rasos das Baías de Antonina e Paranaguá, Paraná

Cited by 7 publications

References 2 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

Ichthyofauna as an environmental quality indicator of the Bertioga Channel, São Paulo (Brazil)

Influence of oceanographic seasonality and dredging activities on the fish larvae assemblage in the Port of Aratu, Todos os Santos Bay

Contact Info

Product

Resources

About