Registro completo |
Provedor de dados: |
ArchiMer
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País: |
France
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Título: |
Rapid root assimilation of added phosphorus in a lowland tropical rainforest of French Guiana
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Autores: |
Van Langenhove, Leandro
Janssens, Ivan A.
Verryckt, Lore
Brechet, Laetitia
Hartley, Iain P.
Stahl, Clement
Courtois, Elodie
Urbina, Ifigenia
Grau, Oriol
Sardans, Jordi
Peguero, Guille
Gargallo-garriga, Albert
Peñuelas, Josep
Vicca, Sara
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Data: |
2020-01
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Ano: |
2020
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Palavras-chave: |
Tropical forest
Phosphorus
Nitrogen
Fertilization
Root system
Plant root simulator probes
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Resumo: |
Theory states that tree growth in lowland tropical forests on old, weathered soils is limited by low phosphorous (P) availability. However, evidence for P limitation from nutrient manipulation experiments remains unclear, which raises the question whether trees are taking up added P. In French Guianese lowland rainforest, we measured changes in nitrogen (N) and P availability before and up to two months after N and P addition. We measured in soils with intact root systems and soils excluding roots and mycorrhizal fungi with root exclusion cylinders. When the root system was excluded, P addition increased P availability to a much greater extent and for a longer time than where the roots remained undisturbed. N dynamics were unaffected by root presence/absence. These results indicate rapid root uptake of P, but not of N, suggesting very effective P acquisition in these lowland rainforests.
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Tipo: |
Text
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Idioma: |
Inglês
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Identificador: |
https://archimer.ifremer.fr/doc/00589/70161/68163.pdf
DOI:10.1016/j.soilbio.2019.107646
https://archimer.ifremer.fr/doc/00589/70161/
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Editor: |
Elsevier BV
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Relação: |
info:eu-repo/grantAgreement/EC/H2020/610028/EU//IMBALANCE-P
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Formato: |
application/pdf
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Fonte: |
Soil Biology & Biochemistry (0038-0717) (Elsevier BV), 2020-01 , Vol. 140 , P. 107646 (3p.)
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Direitos: |
info:eu-repo/semantics/openAccess
restricted use
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