Data/hora: 10/06/2024 16:24:41

Provedor de dados: | 190
País: | Brazil

Título:

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

Autores: | Shimizu, Jarbas Yukio.
Data: | 2010-06-28
Ano: | 2010
Palavras-chave: | Inbreeding; Outbreeding; Extinction; Gene conservation Endogamia; Exogamia; Extinção; Conservação; Germoplasma.
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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Português
Identificador: | http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/125
Editor: | Embrapa Florestas
Relação: | http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/125/87
Formato: | application/pdf

Fonte:

Brazilian Journal of Forestry Research; n. 54 (2007): jan./jun. Pesquisa Florestal Brasileira; 7

Pesquisa Florestal Brasileira; n. 54 (2007): jan./jun. Pesquisa Florestal Brasileira; 7

1983-2605

1809-3647

Fonte:

Direitos autorais 2015 Pesquisa Florestal Brasileira

http://creativecommons.org/licenses/by-nc-nd/4.0