Distribuição ecológica das comunidades de macroalgas da bacia de drenagem do Rio das Pedras, região Centro-Sul do Estado do Paraná, Sul do Brasil

Krupek, Rogério Antônio; Branco, Ciro César Zanini; Peres, Cleto Kaveski

doi:10.1590/s0100-84042007000200002

Cited by 21 publications

(45 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Diante de resultados semelhantes, Krupek et al (2007) e Branco et al (2009 estudando riachos nas regiões centro-sul e centro-oeste do Paraná, propõem que a heterogeneidade espacial de ambientes lóticos e a combinação dessas variáveis em cada fragmento ("mancha") do riacho em um dado tempo, são os fatores que defi nem a diversidade e a distribuição espacial e temporal nestes ambientes.…”

Section: Discussionunclassified

“…A riqueza e a abundância foram estimadas através da análise visual (Necchi Júnior 1993), uma técnica amplamente utilizada em estudos com macroalgas lóticas (Necchi Júnior et al 1994, 2003, Hu & Xie 2006, Krupek et al 2007, Branco et al 2009) e que apresenta resultados comparáveis a outras técnicas como peso seco e clorofi la a (Necchi et al 1995).…”

Section: Methodsunclassified

“…Entretanto, na região subtropical brasileira pouco se conhece sobre a distribuição ecológica das comunidades de macroalgas. As informações disponíveis até o momento abordando tais aspectos são encontradas em Krupek et al (2007) e Branco et al (2008Branco et al ( , 2009, para as regiões centro-sul e centro-oeste do Estado do Paraná, respectivamente.…”

Section: Introductionunclassified

“…A recorrência de tal padrão em diferentes tipos de riachos de diversas partes do mundo permite sugerir o mesmo como sendo universal para tais comunidades (Sheath & Burkholder 1985, Sheath & Cole 1992, Branco & Necchi Júnior 1996, 1998, Necchi Júnior et al 2000, 2003, Hu & Xie 2006. Outro padrão que também tem sido freqüentemente reportado é a alta proporção de espécies de ocorrência restrita a somente um ou poucos riachos, mesmo em estudos envolvendo áreas amostrais de dimensões regionais ou continentais (Hu & Xie 2006, Krupek et al 2007, Branco et al 2009). …”

Section: Introductionunclassified

“…Entretanto, a falta de uma relação direta e evidente entre a estrutura das comunidades de macroalgas com tais variáveis ambientais também têm sido registrada na literatura (Krupek et al 2007, Branco et al 2009.…”

Section: Introductionunclassified

See 4 more Smart Citations

Distribuição ambiental e temporal das comunidades de macroalgas de riachos da Serra da Prata, Estado do Paraná, Sul do Brasil

Peres¹,

Branco²,

Krupek³

2009

Rev. bras. Bot.

Self Cite

View full text Add to dashboard Cite

-(Environmental and temporal distribution of stream macroalgal communities from Serra da Prata, Paraná State, southern Brazil).Considering the scarcity of studies focusing on stream macroalgal communities in subtropical regions, the present study was conducted to investigate the environmental and temporal distribution patterns of these communities in a well-preserved region of ombrophilous dense forest. Eight samplings sites were sampled twice (Summer and Winter) in the Serra da Prata (SaintHilaire/Lange National Park), located in eastern portion of the Parana State, southern Brazil. The Principal Components Analysis (PCA) showed that the environmental variables of the investigated streams had a clear temporal pattern, with an evident distinction between winter and summer conditions. In contrast, the Detrended Correspondence Analysis (DCA), based on the presence/absence of macroalgae, did not reveal any temporal pattern, without evident differences between winter and summer fl oristic compositions. One pattern showed by the DCA was the separation of sampling sites by the intensity of riparian vegetation shading. Overall, the study region showed low values of richness and abundance, and the occurrence of majority of taxa were restricted to a single sampling site. Thus, the results suggested that the structure of the macroalgal communities studied seem to respond to a combination of environmental variables that change continuously in time and space, emphasizing the importance, among others, of variations on a small scale (microhabitat). Moreover, the results also showed that, on a global scale, the distribution of lotic macroalgae in the study region can, apparently, be limited by the degree of shading imposed by riparian vegetation.Key-words -local variation, ombrophilous dense forest, Saint-Hilaire/Lange National Park, shading, subtropical region RESUMO -(Distribuição ambiental e temporal das comunidades de macroalgas de riachos da Serra da Prata, Estado do Paraná, Sul do Brasil). Considerando a carência de estudos enfocando comunidades de macroalgas de ambientes lóticos em regiões subtropicais, o presente estudo foi conduzido com o objetivo de investigar o padrão de distribuição destas comunidades em uma região de fl oresta ombrófi la densa bem preservada. Oito pontos de amostragem foram amostrados em duas estações contrastantes (inverno e verão) na Serra da Prata (Parque Nacional Saint-Hilaire/Lange), localizada na porção leste do Estado do Paraná, Sul do Brasil. A Análise dos Componentes Principais (PCA) mostrou que as variáveis ambientais dos riachos analisados tiveram um padrão temporal claro, com uma distinção evidente entre inverno e verão. De modo contrário, a Análise de Correspondência Destendenciada (DCA), baseada na presença/ausência de espécies, não revelou nenhum padrão temporal ou diferenças entre a composição fl orística do inverno e do verão. Um padrão mostrado na DCA foi a separação dos pontos de amostragem pela intensidade do sombreamento da vegetação ripária. De maneira geral, a regiã...

show abstract

Section: Discussionunclassified

Section: Methodsunclassified

Section: Introductionunclassified

See 3 more Smart Citations

Distribuição ambiental e temporal das comunidades de macroalgas de riachos da Serra da Prata, Estado do Paraná, Sul do Brasil

Peres¹,

Branco²,

Krupek³

2009

Rev. bras. Bot.

Self Cite

View full text Add to dashboard Cite

show abstract

Temporal and spatial distribution of macroalgal communities of mountain streams in Valle de Bravo Basin, central Mexico

et al. 2010

View full text Add to dashboard Cite

The stream macroalgal community is controlled by heterogeneous physical, chemical, and biological factors related with multiple spatial and temporal scales; however, the mechanisms that explain diversity and distribution are scarcely known. The present investigation was conducted to characterize the macroalgal community structure and spatial and temporal distribution and to recognize biogeographic affinities with mountain streams from other regions. Habitat characteristics, abundance, and diversity were investigated in four mountain streams of Valle de Bravo Basin, central Mexico, during two annual cycles. Sampling of visible benthic growths was collected in the most contrasting parts of the year. Physicochemical parameters were recorded in situ at each site and the main ions and nutriments were evaluated for every collection. Statistical analysis between dates was assessed with one-way analysis of variance (ANOVA) and Canonical Correspondence Analysis (CCA). Observed richness average was four species per site and the high abundance of Phormidium interruptum, Nostoc parmelioides, Paralemanea mexicana, Batrachospermum gelatinosum, Sirodotia suecica, Cladophora glomerata, and Prasiola mexicana correlated with cold dry season, high current velocity, and a major size substrate. Valle de Bravo streams can be viewed as a habitat subjected to moderated disturbance, mainly due to the effects of seasonal changes in rainfall contrary to torrents expected of tropical regions. The seasonal patterns of macroalgal communities in Valle de Bravo basin were typically characterized by two distinct periods essentially determined by the rainfall regime and related to temperature, and can be viewed as habitats subjected to moderate disturbance according to intermediate disturbance hypothesis. The distribution species pattern registered suggests a group of temperate species frequently found in mountain regions of the Mexican Volcanic Belt and temperate eastern region of North America and may indicate a possible biogeographic connection with the Neartic region with similar environmental requirements.

show abstract

The influence of habitat structure, at different spatial scales, on the ecological distribution of macroalgal communities in streams

Krupek

Branco

2016

Braz. J. Bot

View full text Add to dashboard Cite

Habitat heterogeneity influences the composition and structure of macroalgal communities in lotic environments. However, depending on the spatial scale, different environmental characteristics may exert more or less influence. This study aimed to evaluate, at different spatial scales of observation, the influences of local and regional environmental variables on ecological distribution of macroalgae in stream ecosystems. The field work was conducted during the months of June and July 2007 in streams of two river basins located in southern Brazil. The spatial scales used were drainage basin, shading, mesohabitat, and microhabitat. According to the results, there are few differences regarding abiotic variables between spatial scales, however, suggesting that sunlight and, consequently, the shading scale have a strong impact on the distribution pattern of stream macroalgae. The mesohabitat scale at the current velocity proved to be an important factor in structuring communities of macroalgae. Finally, microenvironmental factors (e.g., substrate, current velocity, and light availability) appear to exert their direct influence on the spatial distribution of stream macroalgae, generating particular features in each spatial scale of observation, although regional abiotic parameters (e.g., temperature, pH, and conductivity) should also be considered for the structural characterization of these organisms.

show abstract

Distribuição ecológica das comunidades de macroalgas da bacia de drenagem do Rio das Pedras, região Centro-Sul do Estado do Paraná, Sul do Brasil

Cited by 21 publications

References 20 publications

Distribuição ambiental e temporal das comunidades de macroalgas de riachos da Serra da Prata, Estado do Paraná, Sul do Brasil

Distribuição ambiental e temporal das comunidades de macroalgas de riachos da Serra da Prata, Estado do Paraná, Sul do Brasil

Temporal and spatial distribution of macroalgal communities of mountain streams in Valle de Bravo Basin, central Mexico

The influence of habitat structure, at different spatial scales, on the ecological distribution of macroalgal communities in streams

Contact Info

Product

Resources

About