Influence of riparian vegetation and forest structure on the water quality of rural low-order streams in SE Brazil

Souza, Andréa Lúcia Teixeira de; Fonseca, Daniel Gonçalves da; Libório, Rogério Aparecido; Tanaka, Marcel Okamoto

doi:10.1016/j.foreco.2013.02.022

Cited by 128 publications

(77 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…All trees taller than 1.5 m were measured for height (cm), canopy depth (the vertical distance between lowest and highest branches with leaves), and diameter at breast height (dbh) (cm) from which we calculated tree basal area. We pooled the replicate pairs to estimate eight variables for each study plot: total basal area (m 2 /ha), mean and maximum tree height (m), mean canopy depth (m), mean dbh (cm), tree density (number of individuals per hectare), tree layering (coefficient of variation of tree heights, following Souza et al [41]) and grass cover, which was visually classified in four categories, 0-25%, 26-50%, 51-75% or 76-100%.…”

Section: Forest Structurementioning

confidence: 99%

Bird Functional Traits Respond to Forest Structure in Riparian Areas Undergoing Active Restoration

2018

View full text Add to dashboard Cite

Abstract:Monitoring wildlife responses is essential to assess restoration projects. Birds are widely used as bioindicators of ecosystem restoration, but most studies use only taxonomic descriptors to compare categories of reference and restoring sites. Here, we used forest structure as a continuous predictor variable to evaluate avifaunal taxonomic and functional indicators in riparian forest reference and restoration sites on southeastern Brazil. Reference sites were riparian forest remnants, and restoration sites were pasture before seedling reintroduction. Forest structure variables (mean tree height, canopy depth, mean diameter at breast height, basal area, tree layering, tree density, and grass cover) were reduced into two axes using a Principal Component Analysis (PCA), Forest Axis 1 (tree biomass vs. grass cover) and Forest Axis 2 (canopy depth vs. tree density). Bird species were classified in relation to five functional categories (i.e., diet, foraging stratum, nest height, cavity dependence for nesting, and forest dependence). Forest Axis 1 influenced the functional diversity of bird assemblages and the relative abundance within levels of each functional category (except for nest height). The relative abundance of all functional categories combined was also affected by Forest Axis 2. Therefore, forest structure affected the predominant functional traits of bird species in riparian sites under restoration. Sites with higher tree biomass were the richest, with canopy birds that were insectivores and frugivores of high forest dependence, whereas more open sites were associated with birds of low forest dependence and ground-foraging insectivores. Forest structures of similar-aged sites were strongly variable, due to natural and anthropic disturbances, so restoration age was a poor indicator of forest development. These unpredictable disturbances can change the development of sites under restoration, so that forest structure can be a better descriptor of the trajectory of these ecosystems.

show abstract

Section: Forest Structurementioning

confidence: 99%

Bird Functional Traits Respond to Forest Structure in Riparian Areas Undergoing Active Restoration

2018

View full text Add to dashboard Cite

show abstract

“…Por exemplo, Balian e Naiman (2005) encontraram redução de 26.000 para 500 ramos por hectare durante o desenvolvimento inicial de florestas pluviais costeiras da América do Norte. Souza et al (2013) verificaram que um importante descritor multivariado da estrutura de florestas ripárias era um eixo que separava áreas com florestas de alta densidade e baixo DAP daquelas com baixa densidade e alto DAP, com fortes efeitos na condutividade elétrica e concentrações de nutrientes na água. Fernandes et al (2014) verificaram que, num grande fragmento de floresta ripária, o descritor multivariado da estrutura da floresta que separava trechos com alta densidade e baixa área basal daqueles com baixa densidade e alta área basal, também influenciava as concentrações de nutrientes no riacho.…”

Section: Resultsunclassified

“…Fernandes et al (2014) verificaram que, num grande fragmento de floresta ripária, o descritor multivariado da estrutura da floresta que separava trechos com alta densidade e baixa área basal daqueles com baixa densidade e alta área basal, também influenciava as concentrações de nutrientes no riacho. A densidade de árvores é um importante componente da estrutura das florestas, que por sua vez pode influenciar os ciclos hidrológicos e o deslocamento de nutrientes para os riachos (Dosskey et al, 2010, Souza et al, 2013. Assim, mesmo para uma dada cobertura de florestas ripárias numa microbacia, tais florestas podem apresentar diferenças em sua estrutura.…”

Section: Resultsunclassified

“…A partir destes dados, as seguintes variáveis foram estimadas para cada parcela: altura média, DAP médio, área basal total por hectare, densidade de indivíduos por hectare e estratificação da floresta (um índice relativo estimado pelo coeficiente de variação das alturas totais dos indivíduos). Os dados da zona ripária e da estrutura das florestas ripárias faziam parte de um estudo mais amplo, apresentados em Souza et al (2013).…”

Section: Amostragemunclassified

“…De fato, diversos estudos mostram forte influência da composição da zona ripária e estrutura das florestas ripárias na qualidade da água de riachos (Merritt et al, 2010;Souza et al, 2013;Fernandes et al, 2014), sendo que a largura das florestas ripárias é um dos principais referenciais para políticas de preservação de corpos d'água em todo o mundo.…”

Section: Introductionunclassified

See 2 more Smart Citations

Untitled

2015

Rev. ambiente água

View full text Add to dashboard Cite

The following list includes the names and affiliations of all reviewers that evaluated the submissions processed for Volume 10, 2015 of Revista Ambiente & Água, including manuscripts that were accepted and published in one of the four annual issues and also manuscripts submitted and rejected in 2015. It may therefore include the names of reviewers that completed their evaluations between September, 2014 and October, 2015. Several of the reviewers evaluated more than one manuscript.We are deeply indebted to all of them that voluntarily and anonymously spent their precious time to support the journal, and contributed immensely to the quality of the published articles. We gratefully acknowledge their professional work and outstanding product. Note: 1) Some of these reviewers evaluated more than one manuscript; 2) This list includes reviewers that evaluated submissions that were not accepted for publication, in addition to the ones that were published in 2015.As seen in Table 2, 27 reviewers are from international institutions abroad. This is an indication that the journal is gaining international acceptance and inclusion. ABSTRACTLand-use change in the Amazon basin has occurred at an accelerated pace during the last decade, and it is important that the effects induced by these changes on soil properties are better understood. This study investigated the chemical, physical, and biological properties of soil in a field under cultivation of soy and rice, and at an adjacent primary rain forest. Increases in soil bulk density, exchangeable cations and pH were observed in the soy field soil. In the primary forest, soil microbial biomass and basal respiration rates were higher, and the microbial community was metabolically more efficient. The sum of basal respiration across the A, AB and BA horizons on a mass per area basis ranged from 7.31 to 10.05 Mg CO 2 -C ha -1 yr -1 , thus yielding estimates for total soil respiration between 9.6 and 15.5 Mg CO 2 -C ha -1 yr -1 across sites and seasons. These estimates are in good agreement with literature values for Amazonian ecosystems. The estimates of heterotrophic respiration made in this study help to further constrain the estimates of autotrophic soil respiration and will be useful for monitoring the effects of future land-use in Amazonian ecosystems.Keywords: land use change, microbial metabolic quotient, seasonality.Propriedades físicas, químicas, e biológicas de solo sob cultivação de soja e em floresta adjacente na Amazônia RESUMOAs mudanças no uso da terra na bacia Amazônica têm ocorridas num ritmo acelerado durante a última década, e é importante que os efeitos dessas mudanças nos recursos edáficos sejam explicados. Este trabalho teve como objetivo investigar as propriedades físicas, químicas, e biológicas de um solo sob cultivo de soja e arroz, e um solo de floresta primária adjacente. O solo do campo de soja teve aumentos na densidade, cátions trocáveis, e pH. Na floresta primária a biomassa microbiana e a respiração do solo foram maiores, e a comunidade microbia...

show abstract

Native forest cover safeguards stream water quality under a changing climate

Piffer

Tambosi

Ferraz

et al. 2021

Ecological Applications

View full text Add to dashboard Cite

Ensuring a sufficient and adequate supply of water for humans and ecosystems is a pressing environmental challenge. The expansion of agricultural and urban lands has jeopardized watershed ecosystem services and a changing climate poses additional risks for regional water supply. We used stream water quality data collected between 2000 and 2014, coupled with detailed precipitation and land cover information, to investigate the effects of landscape composition and short‐term precipitation variability on the quality of water resources in the state of São Paulo, Brazil. The state is home to over 45 million people and has a long history of human landscape modification. A severe drought in 2014–2015 led to a major water crisis and highlighted the fragility of the regional water supply system. We found that human‐dominated watersheds had lower overall water quality when compared to forested watersheds, with urban cover showing the most detrimental impacts on water quality. Forest cover was associated with a better overall water quality across the studied watersheds, with forested watersheds having low turbidity and high dissolved oxygen. High precipitation led to increased turbidity and fecal coliforms levels and lower dissolved oxygen in streams but these effects depended on watershed land cover. High precipitation diluted concentrations of nitrogen and dissolved solids in highly urbanized watersheds but exacerbated turbidity in pasture‐dominated watersheds. Given the high costs of water treatment in densely populated regions, there is a pressing need to plan and manage landscapes in order to ensure adequate water resources. In tropical regions, maintaining or restoring native vegetation cover is a promising intervention to sustain adequate water quality.

show abstract

Influence of riparian vegetation and forest structure on the water quality of rural low-order streams in SE Brazil

Cited by 128 publications

References 37 publications

Bird Functional Traits Respond to Forest Structure in Riparian Areas Undergoing Active Restoration

Bird Functional Traits Respond to Forest Structure in Riparian Areas Undergoing Active Restoration

Untitled

Native forest cover safeguards stream water quality under a changing climate

Contact Info

Product

Resources

About