A complementary strategy for the conservation of native forest tree species: retrieval and conservation of threatened ecotypes
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Florestal Brasileira (Online) |
Texto Completo: | https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/125 |
Resumo: | Deforestation has become rampant in recent years in Brazil and has affected all biomes where manyspecies are threatened to extinction due to destruction natural habitats. Government initiatives to hinder thechain of destruction include two main lines of action: to establish conservation units (parks, reserves andothers); and programs to encourage plantation of native tree species for reclamation of degraded ecosystems, restoration of forests on permanent protection areas (riparian, and steep slope environments), and establishment of “legal reserves” (a mandatory forest reserve on at least 20% of the land area). Conservation units are effectivein conserving natural ecosystems. However, they are of limited value for the conservation of ecotypes, sincetheir effectiveness is restricted to within their physical boundaries. Since the majority of ecotypes with criticaladaptive value are found outside the conservation units, complementary measures to encompass these variants are needed. The most promising strategy includes active participation of rural land owners, especially small land holders, since they are settled throughout the country (outside the conservation units). An important aspect of the strategy is to prevent movement of seeds and seedlings over great distances from their origins so that their adaptive traits to specific sites are preserved. |
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A complementary strategy for the conservation of native forest tree species: retrieval and conservation of threatened ecotypesEstratégia complementar para conservação de espécies florestais nativas: resgate e conservação de ecótipos ameaçadosEndogamiaexogamiaextinçãoconservaçãogermoplasmaInbreedingoutbreedingextinctiongene conservationDeforestation has become rampant in recent years in Brazil and has affected all biomes where manyspecies are threatened to extinction due to destruction natural habitats. Government initiatives to hinder thechain of destruction include two main lines of action: to establish conservation units (parks, reserves andothers); and programs to encourage plantation of native tree species for reclamation of degraded ecosystems, restoration of forests on permanent protection areas (riparian, and steep slope environments), and establishment of “legal reserves” (a mandatory forest reserve on at least 20% of the land area). Conservation units are effectivein conserving natural ecosystems. However, they are of limited value for the conservation of ecotypes, sincetheir effectiveness is restricted to within their physical boundaries. Since the majority of ecotypes with criticaladaptive value are found outside the conservation units, complementary measures to encompass these variants are needed. The most promising strategy includes active participation of rural land owners, especially small land holders, since they are settled throughout the country (outside the conservation units). An important aspect of the strategy is to prevent movement of seeds and seedlings over great distances from their origins so that their adaptive traits to specific sites are preserved.A devastação das florestas brasileiras vem tomando proporções alarmantes em todos os biomas, colocando muitas espécies de microorganismos, animais e plantas sob risco de extinção devido à descaracterização do habitat. Medidas governamentais contra esse processo de destruição incluem o estabelecimento de unidades de conservação e os programas de plantio de espécies nativas com objetivos variados, como a recuperação deecossistemas degradados e o estabelecimento de Reservas Legais, Áreas de Proteção Permanente e outros. As unidades de conservação são fundamentais na conservação de ecossistemas naturais. No entanto, na conservação da variabilidade ecotípica de espécies florestais, sua eficácia se restringe aos limites físicos da sua área de influência. Considerando que a maior parte dos ecótipos florestais de grande significado adaptativo localiza-se fora das unidades de conservação, medidas complementares são indispensáveis, preferencialmente, com a participação de produtores rurais, sobretudo os de pequena escala, por estarem presentes em todo o território nacional. A estratégia proposta tem como ponto fundamental evitar o plantio de sementes ou mudas emlocais distantes de suas origens, visando preservar as características adaptativas próprias de cada ecossistema. Para isso, recomendam-se procedimentos para a amostragem de matrizes e instalação de povoamentos florestais para conservação mediante uso pelos produtores rurais.Embrapa Florestas2010-06-28info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/125Pesquisa Florestal Brasileira; n. 54 (2007): jan./jun. Pesquisa Florestal Brasileira; 7Pesquisa Florestal Brasileira; No. 54 (2007): jan./jun. Pesquisa Florestal Brasileira; 71983-26051809-3647reponame:Pesquisa Florestal Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/125/87Shimizu, Jarbas Yukioinfo:eu-repo/semantics/openAccess2017-04-28T14:09:00Zoai:pfb.cnpf.embrapa.br/pfb:article/125Revistahttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/PUBhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/oaipfb@embrapa.br || revista.pfb@gmail.com || patricia.mattos@embrapa.br1983-26051809-3647opendoar:2017-04-28T14:09Pesquisa Florestal Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
A complementary strategy for the conservation of native forest tree species: retrieval and conservation of threatened ecotypes Estratégia complementar para conservação de espécies florestais nativas: resgate e conservação de ecótipos ameaçados |
title |
A complementary strategy for the conservation of native forest tree species: retrieval and conservation of threatened ecotypes |
spellingShingle |
A complementary strategy for the conservation of native forest tree species: retrieval and conservation of threatened ecotypes Shimizu, Jarbas Yukio Endogamia exogamia extinção conservação germoplasma Inbreeding outbreeding extinction gene conservation |
title_short |
A complementary strategy for the conservation of native forest tree species: retrieval and conservation of threatened ecotypes |
title_full |
A complementary strategy for the conservation of native forest tree species: retrieval and conservation of threatened ecotypes |
title_fullStr |
A complementary strategy for the conservation of native forest tree species: retrieval and conservation of threatened ecotypes |
title_full_unstemmed |
A complementary strategy for the conservation of native forest tree species: retrieval and conservation of threatened ecotypes |
title_sort |
A complementary strategy for the conservation of native forest tree species: retrieval and conservation of threatened ecotypes |
author |
Shimizu, Jarbas Yukio |
author_facet |
Shimizu, Jarbas Yukio |
author_role |
author |
dc.contributor.author.fl_str_mv |
Shimizu, Jarbas Yukio |
dc.subject.por.fl_str_mv |
Endogamia exogamia extinção conservação germoplasma Inbreeding outbreeding extinction gene conservation |
topic |
Endogamia exogamia extinção conservação germoplasma Inbreeding outbreeding extinction gene conservation |
description |
Deforestation has become rampant in recent years in Brazil and has affected all biomes where manyspecies are threatened to extinction due to destruction natural habitats. Government initiatives to hinder thechain of destruction include two main lines of action: to establish conservation units (parks, reserves andothers); and programs to encourage plantation of native tree species for reclamation of degraded ecosystems, restoration of forests on permanent protection areas (riparian, and steep slope environments), and establishment of “legal reserves” (a mandatory forest reserve on at least 20% of the land area). Conservation units are effectivein conserving natural ecosystems. However, they are of limited value for the conservation of ecotypes, sincetheir effectiveness is restricted to within their physical boundaries. Since the majority of ecotypes with criticaladaptive value are found outside the conservation units, complementary measures to encompass these variants are needed. The most promising strategy includes active participation of rural land owners, especially small land holders, since they are settled throughout the country (outside the conservation units). An important aspect of the strategy is to prevent movement of seeds and seedlings over great distances from their origins so that their adaptive traits to specific sites are preserved. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-06-28 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/125 |
url |
https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/125 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/125/87 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Embrapa Florestas |
publisher.none.fl_str_mv |
Embrapa Florestas |
dc.source.none.fl_str_mv |
Pesquisa Florestal Brasileira; n. 54 (2007): jan./jun. Pesquisa Florestal Brasileira; 7 Pesquisa Florestal Brasileira; No. 54 (2007): jan./jun. Pesquisa Florestal Brasileira; 7 1983-2605 1809-3647 reponame:Pesquisa Florestal Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Florestal Brasileira (Online) |
collection |
Pesquisa Florestal Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Florestal Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pfb@embrapa.br || revista.pfb@gmail.com || patricia.mattos@embrapa.br |
_version_ |
1783370932425850880 |