Water availability determines physiognomic gradient in an area of low-fertility soils under Cerrado vegetation

Assis, Ana Carolina Cunha de; Coelho, Ricardo Marques; Pinheiro, Eduardo da Silva; Durigan, Giselda

doi:10.1007/s11258-010-9893-8

Cited by 84 publications

(71 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In keeping with the observations of many of the previously cited authors, Assis et al (2011) found no correlation between soil fertility and cerradão. However, those authors described the considerable correlation that dystrophic cerradão displays with high levels of clay and microporosity, resulting in greater water retention, thus enabling the occurrence of a more exuberant vegetation (i.e., cerradão).…”

Section: Introductionsupporting

confidence: 90%

“…Hill., and Callisthene fasciculata (Spreng) for mesotrophic, but later the terms "dystrophic cerradão" and mesotrophic cerradão" were used. The soils of dystrophic cerradão show pH and minerals similar to these open forms of cerrado, but higher clay content, indicating greater retention of water in cases that have been analyzed (Assis et al 2011).…”

Section: Introductionmentioning

confidence: 89%

“…The variation in richness and diversity might be related to factors such as the inclusion criterion for trees, basal area, sample size (Pinheiro & Durigan 2012), soil (Assis et al 2011;Neri et al 2013) and biogeography (Ratter et al 1997). The cerrado areas in the Alto Araguaia region in the state of Mato Grosso, the state of Tocantins and the Federal District have a high species richness in comparison to the marginal and disjunct areas of the cerrado biome (Ratter et al 1997).…”

Section: Floristics and Structurementioning

confidence: 99%

See 2 more Smart Citations

Influence of edaphic factors on the floristic composition of an area of cerradão in the Brazilian central-west

et al. 2013

View full text Add to dashboard Cite

This study describes the influence of edaphic factors on the floristic composition of an area of cerradão (woodland savanna) in the city of Campo Grande, located in the Brazilian central-west. In 10 plots (5 × 20 m each), we evaluated all trees with a diameter at breast height ≥ 4.77 cm. Soil samples were analyzed for each plot in order to determine edaphic variables correlated with species composition. We sampled 1180 individuals of 61 species. The evenness index was 0.74, which indicates uneven distribution of species, which was explained by a high abundance of Qualea parviflora, Curatella americana, Qualea grandiflora, Terminalia argentea and Astronium fraxinifolium. We registered more trees in the smallest diameter class and in the middle layer of the vertical structure. The soil was dystrophic with a clay texture, which explains the higher abundance of species related to dystrophic cerradão. However, we also found some trees typical of mesotrophic cerradão and deciduous forests, which could be attributable to the presence of patches of fertile soil within the dystrophic cerradão or could indicate that those mesotrophic species are tolerant of lower levels of soil nutrients.

show abstract

Section: Introductionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 89%

Section: Floristics and Structurementioning

confidence: 99%

See 1 more Smart Citation

Influence of edaphic factors on the floristic composition of an area of cerradão in the Brazilian central-west

et al. 2013

View full text Add to dashboard Cite

show abstract

“…The mean annual temperature is 228C, with a mean maximum of 28.78C and a mean minimum of 15.48C. Annual rainfall is 1441 mm, concentrated in the summer (October-March), with a dry season in the winter (April-September) [34] and the potential evapotranspiration is estimated to be 1100 mm [52]. The rainfall regime, in the study region, is characterized by a large proportion of rain events with very low volume, a regime that is similar to the whole Cerrado biome, where rain events with volume above 30 mm are relatively rare [53].…”

Section: Materials and Methods (A) Study Areamentioning

confidence: 99%

Woody encroachment and its consequences on hydrological processes in the savannah

Honda

Durigan

2016

Phil. Trans. R. Soc. B

Self Cite

View full text Add to dashboard Cite

Woody encroachment due to changes in climate or in the disturbance regimes (fire and herbivory) has been observed throughout the savannah biome over the last century with ecological, hydrological and socioeconomic consequences. We assessed changes in tree density and basal area and estimated changes in rain interception by the canopies across a 5-year period over a biomass gradient in Cerrado vegetation protected from fire. We modelled throughfall, stemflow and net rainfall on the basis of tree basal area (TBA). Tree density increased by an average annual rate of 6.7%, basal area at 5.7% and rain interception by the canopies at 0.6% of the gross rainfall. Independent of the vegetation structure, we found a robust relationship of 0.9% less rainfall reaching the ground as TBA increases by 1 m 2 ha 21 . Increases in tree biomass with woody encroachment may potentially result in less water available for uptake by plants and to recharge rivers and groundwater reserves. Given that water is a seasonally scarce resource in all savannahs, woody encroachment may threaten the ecosystem services related to water resources.This article is part of the themed issue 'Tropical grassy biomes: linking ecology, human use and conservation'.

show abstract

“…Há estudos que justificam a limitação da distribuição de espécies de acordo com o nível de alumínio no substrato (Carvalho & Martins 2009). Já outros autores associam a distribuição diferencial das espécies em função da disponibilidade de água no solo (Furley & Ratter 1988;Assis et al 2011).…”

unclassified

Relações solo-vegetação na estruturação de comunidades de cerrado sensu stricto no sul de Minas Gerais, Brasil

2017

View full text Add to dashboard Cite

ResumoOs cerrados do sul de Minas Gerais ainda são pouco estudados. Objetivou-se com esse trabalho compreender o papel dos solos na estruturação de duas comunidades arbóreas de cerrado no município de Guapé. Para isso, foram instaladas 14 parcelas de 50 × 30 m em dois fragmentos de cerrado sendo 8 sobre Neossolo Litólico e 6 sobre Argissolo Vermelho. Nessas parcelas, todos os indivíduos arbóreos com circunferência a 30 cm do solo (C30) ≥ 15,7 cm (diâmetro de 5 cm) foram medidos e tiraram-se amostras de solo de cada parcela para análises químicas e texturais. Ao todo foram amostrados 1561 indivíduos e a riqueza florística total foi de 83 espécies pertencentes a 65 gêneros de 37 famílias. A área sobre Neossolo foi classificada como cerrado sensu stricto rupestre e Caryocar brasiliense foi a espécie mais importante em VI para a fisionomia. O cerrado sobre Argissolo foi categorizado como um cerrado sensu stricto típico e Dalbergia miscolobium foi a espécie de maior VI para essa fitofisionomia. A análise de correspondência canônica apresentou autovalor significativo para o primeiro eixo de 0,563 indicando gradiente curto com rápida substituição de espécies. Encontrou-se associação aos teores de P e areia no cerrado rupestre e de K e argila no cerrado típico. Por fim, a distribuição das espécies no gradiente foi diferente entre os substratos indicando preferência de espécies por sítios específicos. A conservação dos cerrados do sul de Minas Gerais deve, portanto, considerar não apenas a diversidade florística, mas suas múltiplas pedoformas e as formações ecotonais associadas. Palavras-chave: florística, fitogeografia, hotspot, savana. AbstractThe cerrados of southern Minas Gerais are still poorly studied. The objective of this work was to understand the role of soils in structuring two tree communities of cerrado in the municipality of Guapé. For that 14 plots of 50 × 30 m were installed in two cerrado fragments being 8 over Litholic Neosol and 6 over Red Argisol. In these plots, all tree individuals with circumference at 30 cm from the ground (C30) ≥ 15.7 cm (5 cm diameter) were measured and soil samples from each plot were taken for chemical and textural analysis. In total we sampled 1561 individuals and total species richness was 83 species belonging to 65 genera of 37 families. The area on Neossol was classified as rupestral cerrado sensu stricto and Caryocar brasiliense was the most important species in VI in the physiognomy. The cerrado on Argisol was categorized as typical cerrado sensu stricto and Dalbergia miscolobium was the largest species in VI to this vegetation type. The CCA presented a significant eigenvalue to the first axis of 0.563 indicating a short gradient with rapid replacement of species. There was an association at the contents of P and sand in the rupestral cerrado and K and clay in the typical cerrado. Finally, the distribution of species in the gradient was different between the substrates indicating species preference for specific sites. The conservation of the cerrados of southern Minas Ge...

show abstract

Water availability determines physiognomic gradient in an area of low-fertility soils under Cerrado vegetation

Cited by 84 publications

References 29 publications

Influence of edaphic factors on the floristic composition of an area of cerradão in the Brazilian central-west

Influence of edaphic factors on the floristic composition of an area of cerradão in the Brazilian central-west

Woody encroachment and its consequences on hydrological processes in the savannah

Relações solo-vegetação na estruturação de comunidades de cerrado sensu stricto no sul de Minas Gerais, Brasil

Contact Info

Product

Resources

About