Data/hora: 23/09/2024 00:47:42

Biblioteca(s): 	Embrapa Rondônia.	
Data corrente: 	09/03/2018	
Data da última atualização: 	10/11/2021	
Autoria: 	THOMAS, E.; VALDIVIA, J.; CAICEDO, C. A.; QUAEDVLIEG, J.; WADT, L. H. de O.; CORVERA, R.	
Afiliação: 	Evert Thomas, Bioversity International; Jheyson Valdivia, Universidad Nacional Amazonica de Madre de Dios; Carolina Alcázar Caicedo, Bioversity International; Julia Quaedvlieg, Independent consultant; LUCIA HELENA DE OLIVEIRA WADT, CPAF-Rondonia; Ronald Corvera, Instituto de Investigación para la Amazon?a Peruana.	
Título: 	NTFP harvesters as citizen scientists: Validating traditional and crowdsourced knowledge on seed production of Brazil nut trees in the Peruvian Amazon.	
Ano de publicação: 	2017	
Fonte/Imprenta: 	Plos One, v. 12, n. 8, e0183743, August 2017.	
DOI: 	https://doi.org/10.1371/journal.pone.0183743	
Idioma: 	Inglês	
Conteúdo: 	Understanding the factors that underlie the production of non-timber forest products (NTFPs), as well as regularly monitoring production levels, are key to allow sustainability assessments of NTFP extractive economies. Brazil nut (Bertholletia excelsa, Lecythidaceae) seed harvesting from natural forests is one of the cornerstone NTFP economies in Amazonia. In the Peruvian Amazon it is organized in a concession system. Drawing on seed production estimates of >135,000 individual Brazil nut trees from >400 concessions and ethno-ecological interviews with >80 concession holders, here we aimed to (i) assess the accuracy of seed production estimates by Brazil nut seed harvesters, and (ii) validate their traditional ecological knowledge (TEK) about the variables that influence Brazil nut production. We compared productivity estimates with actual field measurements carried out in the study area and found a positive correlation between them. Furthermore, we compared the relationships between seed production and a number of phenotypic, phytosanitary and environmental variables described in literature with those obtained for the seed production estimates and found high consistency between them, justifying the use of the dataset for validating TEK and innovative hypothesis testing. As expected, nearly all TEK on Brazil nut productivity was corroborated by our data. This is reassuring as Brazil nut concession holders, and NTFP harvesters at large, rely on their knowledge to guide the management of the trees upon which their extractive economies are based. Our findings suggest that productivity estimates of Brazil nut trees and possibly other NTFP-producing species could replace or complement actual measurements, which are very expensive and labour intensive, at least in areas where harvesters have a tradition of collecting NTFPs from the same trees over multiple years or decades. Productivity estimates might even be sourced from harvesters through registers on an annual basis, thus allowing a more cost-efficient and robust monitoring of productivity levels.	
Palavras-Chave: 	Brazil nut; Castanha do brasil; Non-timber forest products; PFNM; Produtos florestais não madeireiros.	
Thesagro: 	Bertholletia Excelsa; Castanha do Para.	
Thesaurus Nal: 	Brazil nuts.	
Categoria do assunto: 	K Ciência Florestal e Produtos de Origem Vegetal	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/227628/1/cpafro-18023.pdf	
Registro original: 	Embrapa Rondônia (CPAF-RO)	
Exemplares: 	CPAF-RO - (18023-1) - UPC - AP - DD -  -  -  - DIS