Growth and survival over ten years of Brazil-nut trees planted in three anthropogenic habitats in northern Amazonia
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Acta Amazonica |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672021000100020 |
Resumo: | ABSTRACT We examined the growth and survival of Brazil-nut trees, Bertholletia excelsa (Lecythidaceae) under different environmental conditions and levels of canopy openness within experimental plantations in the Trombetas River valley, in northern Brazil. We planted 144 seedlings in three anthropogenic habitats with different levels of sunlight exposition: crop field (100% canopy opening), shrub fallow (20-80% canopy opening) and Brazil-nut forest (< 10% canopy opening). We measured plant height and diameter annually and recorded mortality and resprouting over ten years. The performance of B. excelsa differed significantly among habitats, with the highest growth rate observed at the highest level of canopy openness (crop field). Survival was highest in crop field (85%) and shrub fallow (63%) and lowest in Brazil-nut forest (17%). Resprouting capacity was higher in the crop field, as Brazil-nut plants recovered after fire episodes, with most plants resprouting more than one shoot. Some trees in the crop field began to produce flowers and fruits at 9-10 years. We showed that B. excelsa juveniles are light-demanding, with higher survival and growth under conditions of high light exposure. We suggest the use of Brazil-nut trees for reforestation, restoration of degraded lands and enrichment of secondary vegetation, as long as an adequate management is adopted (e.g., maintaining plants exposed to direct sunlight and control of competing pioneer species). |
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Growth and survival over ten years of Brazil-nut trees planted in three anthropogenic habitats in northern AmazoniaBertholletia excelsaplantationlight-demandingland restorationresproutingABSTRACT We examined the growth and survival of Brazil-nut trees, Bertholletia excelsa (Lecythidaceae) under different environmental conditions and levels of canopy openness within experimental plantations in the Trombetas River valley, in northern Brazil. We planted 144 seedlings in three anthropogenic habitats with different levels of sunlight exposition: crop field (100% canopy opening), shrub fallow (20-80% canopy opening) and Brazil-nut forest (< 10% canopy opening). We measured plant height and diameter annually and recorded mortality and resprouting over ten years. The performance of B. excelsa differed significantly among habitats, with the highest growth rate observed at the highest level of canopy openness (crop field). Survival was highest in crop field (85%) and shrub fallow (63%) and lowest in Brazil-nut forest (17%). Resprouting capacity was higher in the crop field, as Brazil-nut plants recovered after fire episodes, with most plants resprouting more than one shoot. Some trees in the crop field began to produce flowers and fruits at 9-10 years. We showed that B. excelsa juveniles are light-demanding, with higher survival and growth under conditions of high light exposure. We suggest the use of Brazil-nut trees for reforestation, restoration of degraded lands and enrichment of secondary vegetation, as long as an adequate management is adopted (e.g., maintaining plants exposed to direct sunlight and control of competing pioneer species).Instituto Nacional de Pesquisas da Amazônia2021-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672021000100020Acta Amazonica v.51 n.1 2021reponame:Acta Amazonicainstname:Instituto Nacional de Pesquisas da Amazônia (INPA)instacron:INPA10.1590/1809-4392202001462info:eu-repo/semantics/openAccessSCOLES,RicardoGRIBEL,Rogérioeng2021-02-26T00:00:00Zoai:scielo:S0044-59672021000100020Revistahttps://acta.inpa.gov.br/PUBhttps://old.scielo.br/oai/scielo-oai.phpacta@inpa.gov.br||acta@inpa.gov.br1809-43920044-5967opendoar:2021-02-26T00:00Acta Amazonica - Instituto Nacional de Pesquisas da Amazônia (INPA)false |
dc.title.none.fl_str_mv |
Growth and survival over ten years of Brazil-nut trees planted in three anthropogenic habitats in northern Amazonia |
title |
Growth and survival over ten years of Brazil-nut trees planted in three anthropogenic habitats in northern Amazonia |
spellingShingle |
Growth and survival over ten years of Brazil-nut trees planted in three anthropogenic habitats in northern Amazonia SCOLES,Ricardo Bertholletia excelsa plantation light-demanding land restoration resprouting |
title_short |
Growth and survival over ten years of Brazil-nut trees planted in three anthropogenic habitats in northern Amazonia |
title_full |
Growth and survival over ten years of Brazil-nut trees planted in three anthropogenic habitats in northern Amazonia |
title_fullStr |
Growth and survival over ten years of Brazil-nut trees planted in three anthropogenic habitats in northern Amazonia |
title_full_unstemmed |
Growth and survival over ten years of Brazil-nut trees planted in three anthropogenic habitats in northern Amazonia |
title_sort |
Growth and survival over ten years of Brazil-nut trees planted in three anthropogenic habitats in northern Amazonia |
author |
SCOLES,Ricardo |
author_facet |
SCOLES,Ricardo GRIBEL,Rogério |
author_role |
author |
author2 |
GRIBEL,Rogério |
author2_role |
author |
dc.contributor.author.fl_str_mv |
SCOLES,Ricardo GRIBEL,Rogério |
dc.subject.por.fl_str_mv |
Bertholletia excelsa plantation light-demanding land restoration resprouting |
topic |
Bertholletia excelsa plantation light-demanding land restoration resprouting |
description |
ABSTRACT We examined the growth and survival of Brazil-nut trees, Bertholletia excelsa (Lecythidaceae) under different environmental conditions and levels of canopy openness within experimental plantations in the Trombetas River valley, in northern Brazil. We planted 144 seedlings in three anthropogenic habitats with different levels of sunlight exposition: crop field (100% canopy opening), shrub fallow (20-80% canopy opening) and Brazil-nut forest (< 10% canopy opening). We measured plant height and diameter annually and recorded mortality and resprouting over ten years. The performance of B. excelsa differed significantly among habitats, with the highest growth rate observed at the highest level of canopy openness (crop field). Survival was highest in crop field (85%) and shrub fallow (63%) and lowest in Brazil-nut forest (17%). Resprouting capacity was higher in the crop field, as Brazil-nut plants recovered after fire episodes, with most plants resprouting more than one shoot. Some trees in the crop field began to produce flowers and fruits at 9-10 years. We showed that B. excelsa juveniles are light-demanding, with higher survival and growth under conditions of high light exposure. We suggest the use of Brazil-nut trees for reforestation, restoration of degraded lands and enrichment of secondary vegetation, as long as an adequate management is adopted (e.g., maintaining plants exposed to direct sunlight and control of competing pioneer species). |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-03-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672021000100020 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672021000100020 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1809-4392202001462 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Instituto Nacional de Pesquisas da Amazônia |
publisher.none.fl_str_mv |
Instituto Nacional de Pesquisas da Amazônia |
dc.source.none.fl_str_mv |
Acta Amazonica v.51 n.1 2021 reponame:Acta Amazonica instname:Instituto Nacional de Pesquisas da Amazônia (INPA) instacron:INPA |
instname_str |
Instituto Nacional de Pesquisas da Amazônia (INPA) |
instacron_str |
INPA |
institution |
INPA |
reponame_str |
Acta Amazonica |
collection |
Acta Amazonica |
repository.name.fl_str_mv |
Acta Amazonica - Instituto Nacional de Pesquisas da Amazônia (INPA) |
repository.mail.fl_str_mv |
acta@inpa.gov.br||acta@inpa.gov.br |
_version_ |
1752129841278222336 |