| Registro completo |
| Provedor de dados: |
ArchiMer
|
| País: |
France
|
| Título: |
Rapid root assimilation of added phosphorus in a lowland tropical rainforest of French Guiana
|
| 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
|
| Data: |
2020-01
|
| Ano: |
2020
|
| Palavras-chave: |
Tropical forest
Phosphorus
Nitrogen
Fertilization
Root system
Plant root simulator probes
|
| 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.
|
| Tipo: |
Text
|
| Idioma: |
Inglês
|
| Identificador: |
https://archimer.ifremer.fr/doc/00589/70161/68163.pdf
DOI:10.1016/j.soilbio.2019.107646
https://archimer.ifremer.fr/doc/00589/70161/
|
| Editor: |
Elsevier BV
|
| Relação: |
info:eu-repo/grantAgreement/EC/H2020/610028/EU//IMBALANCE-P
|
| Formato: |
application/pdf
|
| Fonte: |
Soil Biology & Biochemistry (0038-0717) (Elsevier BV), 2020-01 , Vol. 140 , P. 107646 (3p.)
|
| Direitos: |
info:eu-repo/semantics/openAccess
restricted use
|
|
