The influence of connectivity in forest patches, and riparian vegetation width on stream macroinvertebrate fauna

Valle, I. F; Buss, Daniel Forsin; Baptista, Darcílio Fernandes

doi:10.1590/s1519-69842013000200002

Cited by 35 publications

(21 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Decreases in overall richness (e.g. Kiffney et al ; Couceiro et al ) and changes in community equitability (increase in abundance of opportunistic taxa and reduction of environmentally sensitive ones) have been observed in macroinvertebrate communities after changes in riparian vegetation (Tomanova et al ; Nessimian et al ; Lorion & Kennedy ; Valle et al ; Iñiguez‐Armijos et al ; Conigley et al ). In this context, many studies focusing the required widths of riparian vegetation buffers to maintain the ecological integrity of stream macroinvertebrate communities were conducted (e.g.…”

Section: Introductionmentioning

confidence: 99%

Effects of riparian vegetation width and substrate type on riffle beetle community structure

Braun

Pires

Stenert

et al. 2017

Entomological Science

View full text Add to dashboard Cite

Riffle beetle community structure is influenced by the preservation condition of stream riparian vegetation. Though, the width of riparian vegetation required to ensure conservation of stream insect communities is still controversial. Effects of alterations in riparian vegetation widths on stream insect community structure can be overcame by other environmental variables, like substrate type, hindering accurate assessments. We tested the effects of different riparian vegetation widths (>40, 30–15, 15–5 and <5 m) along with different substrate types (inorganic and organic) on riffle beetle community structure in southern Brazilian 4th‐ to 5th‐order streams. Riparian buffer widths and substrate types influenced riffle beetle community structure, but no interaction between them was observed. Reduced riparian vegetation widths downstream were associated with changes in riffle beetle dominant genera (Macrelmis predominated only in streams with narrowest riparian widths). Additionally, communities in organic substrates had lower equitability and different dominant genera (Hexacylloepus and Heterelmis) than inorganic ones. Our results showed that reductions in riparian vegetation were associated with water pollution and changes in riffle beetle community structure, suggesting that buffer strips narrower than 5 m are not adequate to maintain environmental integrity of southern Brazilian streams. These results have special importance for the conservation of stream insects in Brazil, as reductions up to less than 5 m in stream banks of small properties are allowed by the new Brazilian Forest Code, independently of stream order.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of riparian vegetation width and substrate type on riffle beetle community structure

Braun

Pires

Stenert

et al. 2017

Entomological Science

View full text Add to dashboard Cite

show abstract

“…O mapa de uso/cobertura da terra foi obtido a partir da classificação de imagem do satélite Ikonos, com resolução espacial de 1 m, referente ao ano 2006, cedida pela Prefeitura Municipal de Silva Jardim, RJ, na escala 1:10.000 (Valle et al, 2013). Posteriormente, a classificação foi validada em campo, durante campanhas em 2007 e 2010.…”

Section: -Muito Forteunclassified

Mapeamento da Fragilidade Ambiental na Bacia do Rio Aldeia Velha, RJ

2016

View full text Add to dashboard Cite

RESUMOEste trabalho apresenta um modelo para determinar a fragilidade ambiental em bacias hidrográficas. O estudo foi realizado na Bacia do Rio Aldeia Velha, RJ, localizada na zona de contato e transição entre a baixada litorânea e o relevo montanhoso da Serra do Mar. Fatores que influenciam a ocorrência de processos erosivos foram integrados por algoritmos em um SIG para construção de classes de fragilidade. A análise multicriterial considerou o modelo numérico de terreno, dados oficiais sobre variáveis ambientais, imagem orbital de alta resolução e a opinião de especialistas. Através de informações secundárias sobre pedologia, intensidade das chuvas e declividade do terreno gerou-se o Mapa de Fragilidade Potencial (MFP). Através da combinação desse mapa com informações sobre uso e cobertura da terra obteve-se o Mapa da Fragilidade Emergente (MFE). Os resultados mostram que mais de 70% da área da bacia possui fragilidade ambiental considerada alta ou muito alta, tanto potencial como emergente. Os Processos Erosivos Aparentes (PEA) relacionaram-se positivamente com as áreas de alta fragilidade nos produtos cartográficos finais, destacando regiões mais propensas à intensificação de movimentos de massa e prioritárias para prevenção contra perda de solo. Os modelos geraram informações importantes para o planejamento territorial, possibilitando um zoneamento acessível e de fácil atualização para as prefeituras municipais e organizações da sociedade civil, inclusive para o monitoramento das áreas de alta fragilidade ambiental.Palavras-chave: geoprocessamento, diagnóstico, planejamento territorial. Mapping of Environmental Fragility in the Aldeia Velha River Basin, State of Rio de Janeiro, Brazil ABSTRACTThis paper presents an approach to mapping the environmental fragility of river basins. The study was performed at the Aldeia Velha river basin, a rainforest watershed located between Rio de Janeiro's coastal plains and the Serra do Mar highlands. A multiple-criteria analysis was performed involving factors that affect the risk of erosion; these variables were analyze using GIS tools and were integrated by algorithm in order to form a description of the different classes of environmental fragility in the basin. The multicriteria analysis considered the use of a numerical land model, official data, orbital imagery and the opinion of subject-matter experts. A Map of Potential Fragility (MPF) was generated through the collection of secondary information such as soil types, rainfall intensity and terrain slope. This initial map was later combined with a land-use projection to produce a Map of Emerging Fragility (MEF). The mapping results pointed to a highly fragile environment, where more than 70 percent of the basin's area was classified with high or very high degree of fragility, in both the potential and emerging context. The Apparent

show abstract

“…Tropical streams are rarely studied across urbanization gradients (Victor and Ogbeibu 1991;Buckup et al 2007;Nemeth and Platenberg 2007;Zhang et al 2010;Valle et al 2013). Most previous studies in tropical streams have focused on terrestrial-aquatic interactions and the roles of diverse freshwater species in forested areas (Pringle et al 1993;Covich et al , 2009March and Pringle 2003;Crowl et al 2001;.…”

Section: Introductionmentioning

confidence: 99%

Comparison of decapod communities across an urban-forest land use gradient in Puerto Rican streams

2015

View full text Add to dashboard Cite

Urbanization influences a range of factors related to stream health, including the hydrologic regime, water quality, and riparian conditions that lead to negative effects on terrestrial and aquatic ecosystems. However, impacts on freshwater decapods from urbanization of tropical streams have not been reported. We hypothesized that changes in decapod communities in watersheds with different levels of urbanization are related to changes in physical stream habitats caused by different land uses and their effects on water discharge. The impacts of land use on the physico-chemical characteristics of streams and freshwater decapod communities were evaluated in three watersheds characterized by low, moderate and highintensities of urbanization in Puerto Rico. For the low and moderately developed urban watersheds, decapod species richness ranged from 10 to 11 species; the highly urbanized watershed only had 4 species. Macrobrachium faustinum and Xiphocaris elongata were the most ubiquitously species and were found in all watersheds. Multivariable analysis of physical characteristics and densities of the decapod families resulted in one axis that explained 80 % of the total variation among the watersheds and was correlated with stream discharge. The effect of discharge is likely a result of frequent high flows that sustain habitats with high concentrations of dissolved oxygen and low concentrations of pollutants. An increase in physicochemical parameters were observed from the LUW to the HUW. These results indicate that the decapod communities were most likely influenced by land use and environmental conditions that affected erosional aspects related to water discharge and water quality in the highly impacted watersheds.

show abstract

The influence of connectivity in forest patches, and riparian vegetation width on stream macroinvertebrate fauna

Cited by 35 publications

References 38 publications

Effects of riparian vegetation width and substrate type on riffle beetle community structure

Effects of riparian vegetation width and substrate type on riffle beetle community structure

Mapeamento da Fragilidade Ambiental na Bacia do Rio Aldeia Velha, RJ

Comparison of decapod communities across an urban-forest land use gradient in Puerto Rican streams

Contact Info

Product

Resources

About