Ecosystem Recovery in Amazon Caatinga Forest after Cutting, Cutting and Burning, and Bulldozer Clearing Treatments

Uhl, Christopher; Jordan, Carl F.; Clark, Kathleen; Clark, Howard; Herrera, R.

doi:10.2307/3544671

Cited by 141 publications

(83 citation statements)

References 7 publications

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“…The low levels of erosion, coupled with the low level labile phosphorus status of these Coweeta soils, have likely led to the lack of significant changes in soil phosphorus pools following these disturbance events. This result is supported by other studies that report minimal changes in total or available phosphorus fractions following low intensity disturbance events (Lai and Cummings 1979;Uhl et al 1982;Alegreetal. 1988).…”

Section: Discussionsupporting

confidence: 81%

The Effects of Disturbance Events on Labile Phosphorus Fractions and Total Organic Phosphorus in the Southern Appalachians

Wright

Coleman

1999

Soil Science

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Changes in labile soil phosphorus pools, together with changes in organic matter and total organic soil phosphorus levels, were measured following rhododendron harvest and hurricane windthrow events at the Coweeta Long Term Ecological Research (LTER) site. Seasonal soil samples were 1 taken every 3 months from June 1996 to September 1997. Soil cores were taken along four transects within each study area at distances approximately 1, 5, and 15 m upslope from the stream channel. Levels of resin P were low for all sites and sampling dates (<5 [jug PO 4 -P g soil" 1 ). Levels of bicarbonate inorganic P were <8 (jig PO 4 -P g soil" 1 for all sites and sampling dates, whereas bicarbonate organic P levels were somewhat higher and ranged from 6.5 to 26.6 jjig PO 4 -P g soil" 1. Microbial P levels were the most variable and ranged from 4.5 to 25.8 |xg PO 4 -P g soil" 1. In contrast, total organic P levels were high, 149 to 348 (jug PO 4 -P g soil" 1. For the 3 years after the disturbance events, there were no significant changes in labile phosphorus pools or in total organic phosphorus levels in the soil. This lack of significant differences is likely attributable to the low phosphorus, high P-sorbing status of the soils at Coweeta and the lack of erosion that followed these disturbance events. (Soil Science 1999;164:391-402)

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Section: Discussionsupporting

confidence: 81%

The Effects of Disturbance Events on Labile Phosphorus Fractions and Total Organic Phosphorus in the Southern Appalachians

Wright

Coleman

1999

Soil Science

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“…Uhl et al 1982, Saldarriaga et al 1988, Tabarelli & Mantovani 1999, Saldarriaga & Uhl 1991. In the present case, species richness and diversity, as well as tree volume and basal area, were apparently the first characteristics of the two stands to converge.…”

Section: Discussionmentioning

confidence: 99%

“…However, the 'complete' restoration of many characteristics of the original mature forest is dependent upon many factors, particularly regeneration time, distribution and size of forest fragments, the history of land use and disturbance, and the existence of preserved mature forests on the landscape (Whitmore 1990, Saldarriaga & Uhl 1991, Guariguata & Dupuy 1997, Parthasarathy 1999. Important forest characteristics, such as species richness and diversity, species composition, and tree density and biomass, are affected differently by these factors and are restored at different rates (Uhl et al 1982, Saldarriaga et al 1988, Saldarriaga & Uhl 1991, Tabarelli & Mantovani 1999.…”

Section: Introductionmentioning

confidence: 99%

Diversity and structure of the tree community of a fragment of tropical secondary forest of the brazilian Atlantic Forest domain 15 and 40 years after logging

Filho¹,

Carvalho²,

Vilela³

et al. 2004

Rev. bras. Bot.

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-(Diversity and structure of the tree community of a fragment of tropical secondary forest of the Brazilian Atlantic Forest domain 15 and 40 years after logging). Two adjacent tracts of tropical secondary forest, situated in Itambé do Mato Dentro, south-eastern Brazil, which had been regenerating for 15 and 40 years after clearing, were compared with the purpose of detecting differences in species diversity and composition, species guild composition (regeneration, stratification and dispersion), and stand structure. Four and three 1,125 m 2 plots laid on the 15-and 40-year-old stands, respectively, sampled 2,430 trees with diameter at the base of the stem ≥ 5 cm. The number of species (S = 199) was high for this forest type and significantly higher for the older stand. Tree density was significantly higher in the younger stand, particularly for smaller trees, whereas the two stands did not differ in both basal area and volume per hectare. Trees of shade-tolerant and understory species were significantly more abundant in the older stand. Though sharing a large proportion of species (49%), the two stands differed significantly in the abundance of many species. Live stumps probably contributed to the relatively quick restoration of some forest characteristics, particularly species diversity, basal area and volume.Key words -Brazilian Atlantic forest, forest regeneration, succession, tropical secondary forest RESUMO -(Diversidade e estrutura da comunidade arbórea de um fragmento de floresta tropical secundária do domínio da Floresta Atlântica 15 e 40 anos após o corte). Dois trechos adjacentes de floresta secundária, situados em Itambé do Mato Dentro, MG, e que estiveram em regeneração por 15 e 40 anos depois do corte foram comparados com o propósito de detectar diferenças em diversidade e composição de espécies, composição de guildas (regeneração, estratificação e dispersão) e estrutura do povoamento. Quatro e três parcelas de 1.125 m 2 foram distribuídas nos povoamentos de 15 e 40 anos de idade, respectivamente, e amostraram 2.430 árvores com diâmetro na base do tronco ≥ 5 cm. O número de espécies (S = 199) foi alto para essa tipologia florestal e significativamente maior para o povoamento mais velho. A densidade de árvores foi significativamente mais alta no povoamento mais jovem, particularmente para árvores menores, ao passo que os dois povoamentos não diferiram em área basal e volume por hectare. Árvores de espécies tolerantes à sombra e de espécies de subbosque foram significativamente mais abundantes no povoamento mais velho. Apesar de compartilharem uma grande proporção de espécies (49%) os dois povoamentos diferiram significativamente quanto à abundância de muitas espécies. As cepas das árvores provavelmente contribuíram para a relativamente rápida restauração de algumas características da floresta, particularmente diversidade de espécies, área basal e volume.Palavras-chave -Floresta Atlântica, floresta secundária tropical, regeneração florestal, sucessão

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“…Os resultados da pesquisa do projeto Göttingen SHIFT sobre os impactos negativos do cultivo mecânico do solo correspondem aos resultados das pesquisas feitas em São Carlos e Capitão Poço (DANTAS, 1989;UHL, 1982). Especialmente interessantes, embora afastados do estado da arte da discussão agroeconômica, são os resultados sobre a baixa sustentabilidade ecológica (e econômica) das lavouras permanentes em Igarapé-Açu.…”

Section: Lavouras Permanentes E Anuaisunclassified

Análise socioeconômica dos sistemas de uso de terra por pequenos proprietários na Amazônia oriental

Hurtienne¹

2004

Novos Cadernos NAEA

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Ecosystem Recovery in Amazon Caatinga Forest after Cutting, Cutting and Burning, and Bulldozer Clearing Treatments

Cited by 141 publications

References 7 publications

The Effects of Disturbance Events on Labile Phosphorus Fractions and Total Organic Phosphorus in the Southern Appalachians

The Effects of Disturbance Events on Labile Phosphorus Fractions and Total Organic Phosphorus in the Southern Appalachians

Diversity and structure of the tree community of a fragment of tropical secondary forest of the brazilian Atlantic Forest domain 15 and 40 years after logging

Análise socioeconômica dos sistemas de uso de terra por pequenos proprietários na Amazônia oriental

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