Data/hora: 04/06/2024 03:49:25

Provedor de dados: | 5
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 &amp; Biochemistry (0038-0717) (Elsevier BV), 2020-01 , Vol. 140 , P. 107646 (3p.)

Fonte:

info:eu-repo/semantics/openAccess

restricted use