Contrasting strategies of nutrient demand and use between savanna and forest ecosystems in a neotropical transition zone

Abstract P concentration that was fourfold higher in cerrado than cerradão species. The cerradão showed higher canopy NPP, while fine roots and wood NPP were similar for the two vegetation types. Nutrient requirement in the two vegetation types was dominated by the demands of the canopy, with canopy resorption generally contributing more than 50 % of the total canopy demand for nutrients, while less than 35 % of N, P, K, Ca and Mg were allocated to wood or fine roots. Proportionally, cerrado showed higher nutrient demand from fine roots (over 35 % of the total nutrient demand) and for the wood component (over 13 % of the total nutrient demand), while ∼ P and K than cerrado species, inducing higher resorption to compensate for low uptake. Moreover, we found that N uptake for cerradão was higher with lower N  use efficiency, i.e. the amount of production per nutrient unit, leading higher N demand compared to the cerrado. This difference in nutrient dynamics explains how similar soils and the same climate dominated by savanna vegetation can also support forest-like formations. Tree species composition is likely the major factor regulating nutrient use, limiting vegetation transitions and influencing nutrient demand at landscape scales.

Angaben zum Objekt

• Standort: Deutsche Nationalbibliothek Frankfurt am Main
• Umfang: Online-Ressource
• Sprache: Englisch

Verweise und Beziehungen

• Erschienen in: Contrasting strategies of nutrient demand and use between savanna and forest ecosystems in a neotropical transition zone ; volume:19 ; number:15 ; year:2022 ; pages:3649-3661 ; extent:13 ; Biogeosciences ; 19, Heft 15 (2022), 3649-3661 (gesamt 13)

Beteiligte, Orts- und Zeitangaben

• Urheber: Scalon, Marina Corrêa ; Oliveras Menor, Imma ; Freitag, Renata ; Peixoto, Karine S. ; Rifai, Sami W. ; Marimon, Beatriz Schwantes ; Marimon Junior, Ben Hur ; Malhi, Yadvinder

Weitere Informationen

• DOI: 10.5194/bg-19-3649-2022
• URN: urn:nbn:de:101:1-2022081105334264814938
• Rechteinformation: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Letzte Aktualisierung: 15.08.2025, 07:29 MESZ