Título:	Habitat quality differentiation and consequences for ecosystem service provision of an amazonian hyperdominant tree species.
Autoria:	THOMAS, E. JANSEN, M. CHIRIBOGA-ARROYO, F. WADT, L. H. de O. CORVERA-GOMRINGER, R. ATKINSON, R. J. BONSER, S. P. VELASQUEZ-RAMIREZ, M. G. LADD, B.
Afiliação:	EVERT THOMAS, Bioversity International, Lima, Peru MEREL JANSEN, Institute of Terrestrial Ecosystems, Ecosystem Management, ETH Zürich / CIFOR, Lima, Peru FIDEL CHIRIBOGA-ARROYO, Institute of Terrestrial Ecosystems, Ecosystem Management, ETH Zürich, Zurich, Switzerland LUCIA HELENA DE OLIVEIRA WADT, CPAF-RO RONALD CORVERA-GOMRINGER, Instituto de Investigaciones de la Amazonia Peruana – IIAP, Puerto Maldonado, Peru RACHEL JUDITH ATKINSON, Bioversity International, Lima, Peru STEPHEN P. BONSER, University of New South Wales, Sydney, NSW, Australia MANUEL GABRIEL VELASQUEZ-RAMIREZ, Instituto de Investigaciones de la Amazonia Peruana – IIAP, Puerto Maldonado, Peru BRENTON LADD, Escuela de Agroforestería, Universidad Científica del Sur, Lima, Peru.
Ano de publicação:	2021
Referência:	Frontiers in Plant Science, v. 12, 621064, Mar. 2021.
Conteúdo:	Ecosystem services of Amazonian forests are disproportionally produced by a limited set of hyperdominant tree species. Yet the spatial variation in the delivery of ecosystem services by individual hyperdominant species across their distribution ranges and corresponding environmental gradients is poorly understood. Here, we use the concept of habitat quality to unravel the effect of environmental gradients on seed production and aboveground biomass (AGB) of the Brazil nut, one of Amazonia's largest and most long-lived hyperdominants. We find that a range of climate and soil gradients create trade-offs between density and fitness of Brazil nut trees. Density responses to environmental gradients were in line with predictions under the Janzen-Connell and Herms-Mattson hypotheses, whereas tree fitness responses were in line with resource requirements of trees over their life cycle. These trade-offs resulted in divergent responses in area-based seed production and AGB. While seed production and AGB of individual trees (i.e., fitness) responded similarly to most environmental gradients, they showed opposite tendencies to tree density for almost half of the gradients. However, for gradients creating opposite fitness-density responses, area-based seed production was invariable, while trends in area-based AGB tended to mirror the response of tree density. We conclude that while the relation between environmental gradients and tree density is generally indicative of the response of AGB accumulation in a given area of forest, this is not necessarily the case for fruit production.
Thesagro:	Castanha do Para Produção de Sementes Bertholletia Excelsa Essência Florestal
NAL Thesaurus:	Forest trees Carbon sequestration Ecosystem services Brazil nuts Seedling production Aboveground biomass
Palavras-chave:	Espécies hiperdominantes Gradiente ambiental Serviços ecossistêmicos Biomassa aérea Castanha do brasil Sequestro de carbono Growth differentiation balance framework Janzen-Connell hypothesis Negative density dependence (NDD) Environmental gradients Hyperdominant tree species
ISSN:	1664-462X
Digital Object Identifier:	https://doi.org/10.3389/fpls.2021.621064
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CPAF-RO)