Artigo

Soil fertility gradients shape the agrobiodiversity of Amazonian homegardens

The importance of homegardens for the conservation of agrobiodiversity, the maintenance of farm ecosystem processes, and the economic and food security of rural populations worldwide is increasingly recognized. While biophysical and socio-economic conditions are considered to influence homegarden ma...

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Autor principal: Junqueira, André Braga
Outros Autores: Souza, N. B., Stomph, Tjeerd Jan, Almekinders, Conny J.M., Clement, Charles Roland, Struik, Paul C.
Grau: Artigo
Idioma: English
Publicado em: Agriculture, Ecosystems and Environment 2020
Assuntos:
Agricultural Management
Agroecology
Biodiversity
Biophysics
Ethnography
Floristics
Food Security
Home Garden
Perception
Socioeconomic Impact
Soil Color
Soil Fertility
Soil Texture
Amazonia
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/17350
id oai:repositorio:1-17350
recordtype dspace
spelling oai:repositorio:1-17350 Soil fertility gradients shape the agrobiodiversity of Amazonian homegardens Junqueira, André Braga Souza, N. B. Stomph, Tjeerd Jan Almekinders, Conny J.M. Clement, Charles Roland Struik, Paul C. Agricultural Management Agroecology Biodiversity Biophysics Ethnography Floristics Food Security Home Garden Perception Socioeconomic Impact Soil Color Soil Fertility Soil Texture Amazonia The importance of homegardens for the conservation of agrobiodiversity, the maintenance of farm ecosystem processes, and the economic and food security of rural populations worldwide is increasingly recognized. While biophysical and socio-economic conditions are considered to influence homegarden management, and affect their ecological and societal relevance, little is known about how variation in soil properties affects these agroecosystems. By combining soil data with extensive botanical inventories, we investigated how farmers' use and management of soil variation results in differences in the structure, diversity and the floristic composition of homegardens in Central Amazonia. We sampled 70 homegardens located along the gradient from low-fertility Ferralsols to Amazonian Dark Earths (ADE), i.e., fertile anthropogenic soils created by pre-Columbian populations at least 500 years ago. Our results show that several characteristics of homegardens are significantly influenced by variation in soil texture and fertility. While differences in soil texture are due to natural soil variation, observed heterogeneity in soil fertility was largely the result of pre-Columbian and modern soil transformations. Homegardens on sandier soils tended to be more diverse in plant species and to have more individual plants; homegardens on more fertile soils tended to have fewer trees and palms, more herbs, shrubs and climbers, and a higher total number of species and landraces; variation in soil fertility was significantly related to differences in the composition of species and landraces. Our results show that farmers' use of natural and anthropogenic variation in soil properties influences agrobiodiversity patterns in homegardens. Pre-Columbian and modern soil enrichment increases soil heterogeneity in the landscape, resulting in strong soil fertility gradients that shape the agrobiodiversity of current Amazonian homegardens. © 2016 Elsevier B.V. 2020-06-15T21:41:37Z 2020-06-15T21:41:37Z 2016 Artigo https://repositorio.inpa.gov.br/handle/1/17350 10.1016/j.agee.2016.01.002 en Volume 221, Pags. 270-281 Restrito Agriculture, Ecosystems and Environment
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Agricultural Management
Agroecology
Biodiversity
Biophysics
Ethnography
Floristics
Food Security
Home Garden
Perception
Socioeconomic Impact
Soil Color
Soil Fertility
Soil Texture
Amazonia
spellingShingle Agricultural Management
Agroecology
Biodiversity
Biophysics
Ethnography
Floristics
Food Security
Home Garden
Perception
Socioeconomic Impact
Soil Color
Soil Fertility
Soil Texture
Amazonia
Junqueira, André Braga
Soil fertility gradients shape the agrobiodiversity of Amazonian homegardens
topic_facet Agricultural Management
Agroecology
Biodiversity
Biophysics
Ethnography
Floristics
Food Security
Home Garden
Perception
Socioeconomic Impact
Soil Color
Soil Fertility
Soil Texture
Amazonia
description The importance of homegardens for the conservation of agrobiodiversity, the maintenance of farm ecosystem processes, and the economic and food security of rural populations worldwide is increasingly recognized. While biophysical and socio-economic conditions are considered to influence homegarden management, and affect their ecological and societal relevance, little is known about how variation in soil properties affects these agroecosystems. By combining soil data with extensive botanical inventories, we investigated how farmers' use and management of soil variation results in differences in the structure, diversity and the floristic composition of homegardens in Central Amazonia. We sampled 70 homegardens located along the gradient from low-fertility Ferralsols to Amazonian Dark Earths (ADE), i.e., fertile anthropogenic soils created by pre-Columbian populations at least 500 years ago. Our results show that several characteristics of homegardens are significantly influenced by variation in soil texture and fertility. While differences in soil texture are due to natural soil variation, observed heterogeneity in soil fertility was largely the result of pre-Columbian and modern soil transformations. Homegardens on sandier soils tended to be more diverse in plant species and to have more individual plants; homegardens on more fertile soils tended to have fewer trees and palms, more herbs, shrubs and climbers, and a higher total number of species and landraces; variation in soil fertility was significantly related to differences in the composition of species and landraces. Our results show that farmers' use of natural and anthropogenic variation in soil properties influences agrobiodiversity patterns in homegardens. Pre-Columbian and modern soil enrichment increases soil heterogeneity in the landscape, resulting in strong soil fertility gradients that shape the agrobiodiversity of current Amazonian homegardens. © 2016 Elsevier B.V.
format Artigo
author Junqueira, André Braga
author2 Souza, N. B.
Stomph, Tjeerd Jan
Almekinders, Conny J.M.
Clement, Charles Roland
Struik, Paul C.
author2Str Souza, N. B.
Stomph, Tjeerd Jan
Almekinders, Conny J.M.
Clement, Charles Roland
Struik, Paul C.
title Soil fertility gradients shape the agrobiodiversity of Amazonian homegardens
title_short Soil fertility gradients shape the agrobiodiversity of Amazonian homegardens
title_full Soil fertility gradients shape the agrobiodiversity of Amazonian homegardens
title_fullStr Soil fertility gradients shape the agrobiodiversity of Amazonian homegardens
title_full_unstemmed Soil fertility gradients shape the agrobiodiversity of Amazonian homegardens
title_sort soil fertility gradients shape the agrobiodiversity of amazonian homegardens
publisher Agriculture, Ecosystems and Environment
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/17350
_version_ 1787143186289786880
score 11.653393

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