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  <leader>05319nab a2200325 i 4500</leader>
  <controlfield tag="003">BR-BrBNA</controlfield>
  <controlfield tag="005">20231221155820.0</controlfield>
  <controlfield tag="008">231221b2018    bl.qr|pooa||| 00| 0 por |</controlfield>
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    <subfield code="a">K10</subfield>
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    <subfield code="a">Camara, Rodrigo</subfield>
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  <datafield tag="100" ind1=" " ind2=" ">
    <subfield code="a">Silva, Vinicius Duncan</subfield>
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  <datafield tag="100" ind1=" " ind2=" ">
    <subfield code="a">Delaqua, Geovana Carla Girondi</subfield>
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    <subfield code="a">Lisb&#xF4;a, Cinthia Pinheiro</subfield>
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    <subfield code="a">Villela, Dora Maria</subfield>
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  <datafield tag="245" ind1=" " ind2=" ">
    <subfield code="a">Rela&#xE7;&#xE3;o entre sucess&#xE3;o secund&#xE1;ria, solo e serapilheira em uma reserva biol&#xF3;gica no estado do Rio de Janeiro, Brasil</subfield>
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    <subfield code="a">Publica&#xE7;&#xE3;o on-line; 42 ref.; 4 tables; 1 illus.; Summaries (En, Pt)</subfield>
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RESUMO
A ciclagem de nutrientes &#xE9; influenciada pelo est&#xE1;gio sucessional. Contudo, existem diverg&#xEA;ncias quanto ao
padr&#xE3;o desta din&#xE2;mica. No presente estudo, objetivou-se avaliar os atributos qu&#xED;micos do solo superficial
e da serapilheira produzida em dois plantios abandonados do eucalipto Corymbia citriodora em diferentes
est&#xE1;gios de sucess&#xE3;o secund&#xE1;ria de esp&#xE9;cies nativas de Mata Atl&#xE2;ntica (PJ: plantio jovem; PM: plantio
maduro), na Reserva Biol&#xF3;gica Uni&#xE3;o, Rio de Janeiro. Testou-se a hip&#xF3;tese de que ocorre o incremento da
concentra&#xE7;&#xE3;o de nutrientes na camada superficial de solo e na serapilheira, da produ&#xE7;&#xE3;o de serapilheira e
do aporte de nutrientes para o solo via serapilheira, em fun&#xE7;&#xE3;o do avan&#xE7;o da sucess&#xE3;o. Em cinco parcelas
(5 m x 20 m) em PJ e PM, foram realizadas amostragens da camada superficial do solo (0-10 cm; esta&#xE7;&#xF5;es
seca/2008, chuvosa/2008, seca/2009 e chuvosa/2010) e da serapilheira (coletores com 0,49 m2
; 1,0 m acima do solo; coletas quinzenais; per&#xED;odo amostral de 366 dias). A camada superficial do solo na &#xE1;rea PM
apresentou maiores concentra&#xE7;&#xF5;es de C e N totais, H+Al e Mn. Por outro lado, os valores de pH, raz&#xE3;o
C/N, concentra&#xE7;&#xF5;es de K, Fe e Zn foram maiores na camada de solo superficial na &#xE1;rea PJ. N&#xE3;o se detectou
padr&#xE3;o claro para as concentra&#xE7;&#xF5;es de P e Cu no solo. A produ&#xE7;&#xE3;o anual de serapilheira foi maior na &#xE1;rea
PM, que apresentou maiores concentra&#xE7;&#xF5;es de N total e Mg, enquanto na &#xE1;rea PJ foram verificados maiores
valores da raz&#xE3;o C/N e concentra&#xE7;&#xF5;es de P e Ca. N&#xE3;o houve varia&#xE7;&#xE3;o para C total na serapilheira. Os aportes
de C, N, P, K e Mg foram maiores na serapilheira na &#xE1;rea PM, e n&#xE3;o houve diferen&#xE7;as entre as &#xE1;reas PJ e PM
para o aporte de Ca. Corroboramos em parte a hip&#xF3;tese testada em rela&#xE7;&#xE3;o ao teor de nutrientes na camada
superficial do solo, serapilheira e aporte de nutrientes, e corroboramos integralmente a hip&#xF3;tese no que se
refere &#xE0; produ&#xE7;&#xE3;o de serapilheira.

Palavras-chave: ciclagem de nutrientes; Corymbia citriodora; regenera&#xE7;&#xE3;o natural</subfield>
  </datafield>
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ABSTRACT
The nutrient cycling is influenced by the successional stage. However, there is disagreement in relation
to the pattern of this dynamic. The present study aimed to evaluate the chemical attributes of the topsoil
and litterfall in two abandoned plantations of the eucalyptus Corymbia citriodora in different stages of
Atlantic Rainforest succession (PJ: young plantation; PM: mature plantation) at the Uni&#xE3;o Biological
Reserve, RJ. We tested the hypothesis that there is an increase in the nutrient contents in the topsoil and
litterfall, the amount of litterfall and nutrient input to the soil, as the process of forest succession advances.
We sampled the topsoil (depth of 0-10 cm; dry season/2008, rainy season/2008, dry season/2009, rainy
season/2010) and litterfall (0.49 m2 traps; 1.0 m above the forest floor; twice a month; 366 days) in five 
plots (5 m x 20 m) in the areas of PJ and PM. The topsoil in the PM area presented higher content of total C and
N, H + Al, and Mn. On the other hand, the values of pH, C/N ratio and content of K, Fe, and Zn were higher
in the topsoil in the PJ area. No clear pattern was detected in terms of the P and Cu content in the topsoil.
The annual litterfall was higher in the PM area, which presented higher content of total N and Mg, while
higher C/N ratio and content of both P and Ca occurred in the PJ area. We did not detect differences in terms
of total C in litterfall. The input of C, N, P, K and Mg to the soil were higher by litterfall in the area of PM,
and there were no differences between PJ and PM in relation to the Ca input. We partly corroborated the
tested hypothesis in relation to the nutrient content in topsoil, litterfall and nutrient input, and we completely
corroborated the hypothesis in terms of litterfall.

Keywords: nutrient cycling; Corymbia citriodora; natural regeneration.</subfield>
  </datafield>
  <datafield tag="650" ind1=" " ind2=" ">
    <subfield code="a">SERAPILHEIRA</subfield>
  </datafield>
  <datafield tag="650" ind1=" " ind2=" ">
    <subfield code="a">EUCALIPTO</subfield>
  </datafield>
  <datafield tag="650" ind1=" " ind2=" ">
    <subfield code="a">SOLO</subfield>
  </datafield>
  <datafield tag="650" ind1=" " ind2=" ">
    <subfield code="a">PROPRIEDADE F&#xCD;SICO-QU&#xCD;MICA</subfield>
  </datafield>
  <datafield tag="650" ind1=" " ind2=" ">
    <subfield code="a">REGENERA&#xC7;&#xC3;O NATURAL</subfield>
  </datafield>
  <datafield tag="773" ind1="0" ind2=" ">
    <subfield code="0">4065</subfield>
    <subfield code="9">198128</subfield>
    <subfield code="d">Santa Maria-RS Universidade Federal de Santa Maria - Centro de Pesquisas Florestais.Departamento de Ci&#xEA;ncias Florestais. Programa de P&#xF3;s-Gradua&#xE7;&#xE3;o em Engenharia Florestal 1991</subfield>
    <subfield code="o">2023-437009</subfield>
    <subfield code="t">Ci&#xEA;ncia Florestal (Brazil)</subfield>
    <subfield code="x">0103-9954; 1980-5098 (on-line)</subfield>
    <subfield code="g">v. 28(2) p. 674-686; (Apr-Jun 2018)</subfield>
    <subfield code="w">BR2023001476</subfield>
  </datafield>
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    <subfield code="u">https://www.scielo.br/j/cflo/a/brbjQ78tMc3wfDkpQftvNfm/?format=pdf&amp;lang=pt</subfield>
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    <subfield code="c">Anal&#xED;tica</subfield>
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    <subfield code="c">260156</subfield>
    <subfield code="d">260156</subfield>
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