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| Clemente,Eliane de Paula; Schaefer,Carlos Ernesto G.R.; Oliveira,Fábio Soares; Albuquerque Filho,Manoel Ricardo; Alves,Ruy Válka; Sá,Mariana Médice Firme; Melo,Vander de Freitas; Corrêa,Guilherme Resende. |
| As ilhas oceânicas, como ambientes sui generis no planeta, têm despertado, cada vez mais, o interesse da comunidade científica em virtude de sua importância ambiental. Este trabalho teve por objetivo estudar os principais solos de ocorrência da Ilha da Trindade, enfatizando suas características químicas e físicas nos diferentes estratos ambientais de ocorrência. Buscou-se melhor entendimento das relações pedogeomorfológicas, permitindo um esboço preliminar da identificação dos solos ao longo da expressiva variação topográfica reinante na área de estudo. Ao longo de uma topossequência, foram coletados 10 perfis representativos dos diferentes pedoambientes, resultantes de variações litológicas, topográficas e de cobertura vegetal, muitas das quais... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ilha da Trindade; Solos endêmicos; Rochas vulcânicas; Atlântico sul. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000500028 |
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| Souza,Kleberson Worslley de; Lima,Hedinaldo Narciso; Schaefer,Carlos Ernesto G.R.; Teixeira,Wenceslau Geraldes; Pulrolnik,Karina; Corrêa,Guilherme Resende. |
| Despite the agricultural importance of Indian Black Earth (IBE) in the Amazon region, there are few studies that report on the relation between soil texture and chemical fertility of IBE. These soils of pre-Colombian origin, with high contents of P, Ca and other nutrients are found across the Amazon valley. IBE profiles were studied to evaluate the total contents of P, its primary chemical forms and the P transformation phases in areas with IBE soils of variable texture and in adjacent reference soils. The soil texture strongly influenced soil fertility, changing in terms of transformation of the primary P forms and, consequently, predominant P forms in IBE. Soils with texture varying between clay and heavy clay had higher total P contents and primary Ca-P... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon Black Earth; Soil P fractionation; Upland soils; Manacapuru; Amazon soils; Anthropogenic soils. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000500027 |
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| Corrêa,Guilherme Resende; Schaefer,Carlos Ernesto G.R; Freitas Melo,Vander de; Souza,Kleberson Worslley de; Ker,João Carlos; Rodrigues,Igor Morais Mariano; Senra,Eduardo Osório. |
| In prehistoric times, innumerous shell middens, called "sambaquis", consisting mainly of remains of marine organisms, were built along the Brazilian coast. Although the scientific community took interest in these anthropic formations, especially since the nineteenth century, their pedological context is still poorly understood. The purpose of this study was to characterize and identify the physical and chemical changes induced by soil-forming processes, as well as to compare the morphology of shell midden soils with other, already described, anthropogenic soils of Brazil. Four soil profiles developed from shell middens in the Região dos Lagos - RJ were morphologically described and the physical and chemical properties determined. The chemical analysis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sambaquis; Pre-columbian settlements; Anthropic contribution; Anthropogenic soils; Indian Black-Earth. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000400004 |
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