Geoecology: An Evolutionary Approach

Huggett, Richard

doi:10.4324/9780203138717

Cited by 65 publications

(77 citation statements)

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Section: Resultsmentioning

confidence: 64%

“…2). These results demonstrate that the fl oristic differentiation between areas of Atlantic forest in Rio de Janeiro and those in São Paulo are a result of differences in rainfall, altitude, and average annual temperature, and reinforces the role of geo-environmental variables in speciation (Gentry 1982, Huggett 1995, Oliveira-Filho et al 2005.Among the various environmental factors examined, rainfall plays a signifi cant role in the fl oristic differentiation between São Paulo and Rio de Janeiro. The importance of rainfall in determining fl oristic composition has already been confi rmed in extensive studies in the Neotropics and in the differentiation of ombrophilous and seasonal forests in the Atlantic forest biome of southeastern Brazil (Gentry 1982, Oliveira-Filho & Fontes 2000.…”

mentioning

confidence: 69%

Section: Resultsmentioning

confidence: 99%

“…This geographic situation translates into heavier rainfall on the coastal plains (and the slopes of the Serra do Mar range in São Paulo) and lighter rainfall in Rio de Janeiro state (Barbosa 2007). This variation in rainfall imposed by landform changes helps explain the differences observed between the Atlantic forest of São Paulo and Rio de Janeiro (Huggett 1995).The heterogeneity of the Atlantic forest has been examined in various comparative studies employing cluster analysis (Peixoto et al 2004, Carvalho et al 2006b, Rolim et al 2006. The use of this technique together with TWINSPAN analysis has confi rmed and refi ned information generated by CCA.…”

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confidence: 97%

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Influence of environmental variation on Atlantic Forest tree-shrub-layer phytogeography in southeast Brazil

et al. 2010

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-(Infl uence of environmental variation on Atlantic Forest tree-shrub-layer phytogeography in southeast Brazil). This work assessed data from 32 forest sites in Rio de Janeiro and São Paulo, Brazil, using multivariate analysis to answer the question: Are there fl oristic patterns of the Atlantic Forest tree-shrub layer related to the Serra do Mar and the width of coastal plains in the states of Rio de Janeiro and São Paulo? Three multivariate analyses were performed to investigate the relationship between the tree-shrub fl ora and environmental variation in these 32 study areas. Our analyses demonstrated the infl uence of geo-climatic variation on fl oristic differentiation of tree and shrub species in Atlantic Forest regions generating groups of areas based on similar biotic and abiotic characteristics. These groups support the existence of fl oristic patterns within the states of São Paulo and Rio de Janeiro and refl ect tree-shrub species substitution between the study areas as a consequence of annual rainfall, altitude, and mean annual temperature variation linked to a change in the position of the Serra do Mar and an increase in coastal plain width. Preferential species were cited for each group and should be considered in restoration and conservation programs for the phytoecological regions represented by the groups. Key words: Atlantic rain forest, fl oristic composition, multivariate analyses, phytogeography RESUMO -(Infl uência da variação ambiental sobre a fi togeografi a do estrato arbóreo-arbustivo da Mata Atlântica em dois estados do sudeste brasileiro). O presente trabalho analisou dados de 32 remanescentes fl orestais nos estados do Rio de Janeiro e São Paulo, através de análises multivariadas para responder a pergunta: Existem padrões fl oristicos do estrato arbóreo-arbustivo da Floresta Atlântica relacionados a Serra do Mar e alargamento das planícies costeiras nos estados do Rio de Janeiro e São Paulo? Foram utilizadas três análises multivariadas para investigar as relações entre a fl ora arbóreo-arbustiva e a variação ambiental das 32 áreas. As análises demonstraram infl uência de alterações geo-climáticas sobre a diferenciação fl orística das espécies arbóreas e arbustivas da Mata Atlântica. Este fato permitiu gerar grupos com as áreas analisadas baseados em características bióticas e abióticas, sustentando a existência de padrões fl orísticos nos estados do Rio de Janeiro e São Paulo. Os grupos formados refl etem a substituição das espécies arbóreo-arbustivas entre as áreas analisadas como conseqüência de variações da precipitação, altitude e temperatura média anual à medida que modifi ca o posicionamento da Serra do Mar e cresce a planície costeira. Para cada grupo foram designadas espécies preferenciais que devem ser consideradas em programas de restauração e conservação das regiões fi toecológicas por eles representadas. Palavras-chave: Análise multivariada, composição fl orística, fi togeografi a, Mata Atlântica 370 Nettesheim et al.: Infl uence of environmental variation on At...

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Section: Resultsmentioning

confidence: 64%

mentioning

confidence: 69%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 97%

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Influence of environmental variation on Atlantic Forest tree-shrub-layer phytogeography in southeast Brazil

et al. 2010

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“…Regarding the interaction between forests and natural hazards, research should shift focus to mountain geo-ecosystem functioning. In replication of Troll (1971), Rowe and Barnes (1994) and Huggett (1995) we prefer the term geo-ecosystem to place the emphasis not only on the biosphere, but also on the atmosphere, hydrosphere, lithosphere and pedosphere, which are dynamic and important parts of mountain forest landscapes. Understanding geo-ecosystem functioning differs from assessing how geo-ecosystem functions are performed; it is about understanding how our surrounding dynamic ecosystems, which are affected by our social and economical systems, operate.…”

Section: Synthesis: Interaction Between Human and Natural Systemsmentioning

confidence: 99%

Integrity, stability and management of protection forests in the European Alps

Dorren¹,

Berger²,

Imeson

et al. 2004

Forest Ecology and Management

170

101

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Identity and relationships of the Arboreal Caatinga among other floristic units of seasonally dry tropical forests (SDTFs) of north‐eastern and Central Brazil

Santos

Oliveira‐Filho

Eisenlohr

et al. 2012

Ecology and Evolution

139

112

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The tree species composition of seasonally dry tropical forests (SDTF) in north-eastern and central Brazil is analyzed to address the following hypotheses: (1) variations in species composition are related to both environment (climate and substrate) and spatial proximity; (2) SDTF floristic units may be recognized based on peculiar composition and environment; and (3) the Arboreal Caatinga, a deciduous forest occurring along the hinterland borders of the Caatinga Domain, is one of these units and its flora is more strongly related to the caatinga vegetation than to outlying forests. The study region is framed by the Brazilian coastline, 50th meridian west and 21st parallel south, including the Caatinga Domain and extensions into the Atlantic Forest and Cerrado Domains. Multivariate and geostatistic analyses were performed on a database containing 16,226 occurrence records of 1332 tree species in 187 georeferenced SDTF areas and respective environmental variables. Tree species composition varied significantly with both environmental variables and spatial proximity. Eight SDTF floristic units were recognized in the region, including the Arboreal Caatinga. In terms of species composition, its tree flora showed a stronger link with that of the Cerrado Dry Forest Enclaves. On the other hand, in terms of species frequency across sample areas, the links were stronger with two other units: Rock Outcrops Caatinga and Agreste and Brejo Dry Forests. There is a role for niche-based control of tree species composition across the SDTFs of the region determined primarily by the availability of ground water across time and secondarily by the amount of soil mineral nutrients. Spatial proximity also contributes significantly to the floristic cohesion of SDTF units suggesting a highly dispersal-limited tree flora. These units should be given the status of eco-regions to help driving the conservation policy regarding the protection of their biodiversity.

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Geoecology: An Evolutionary Approach

Cited by 65 publications

References 0 publications

Influence of environmental variation on Atlantic Forest tree-shrub-layer phytogeography in southeast Brazil

Influence of environmental variation on Atlantic Forest tree-shrub-layer phytogeography in southeast Brazil

Integrity, stability and management of protection forests in the European Alps

Identity and relationships of the Arboreal Caatinga among other floristic units of seasonally dry tropical forests (SDTFs) of north‐eastern and Central Brazil

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