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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Seed size-number trade-off in Euterpe edulis in plant communities of the Atlantic Forest

Texto completo
Autor(es):
Santin Brancalion, Pedro Henrique [1] ; Rodrigues, Ricardo Ribeiro [2]
Número total de Autores: 2
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, ESALQ, Dept Forest Sci, BR-13418900 Piracicaba, SP - Brazil
[2] Univ Sao Paulo, ESALQ, Dept Biol Sci, BR-09134189 Piracicaba, SP - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: Scientia Agricola; v. 71, n. 3, p. 226-231, MAY-JUN 2014.
Citações Web of Science: 4
Resumo

Investigations of seed size and number differences among plant populations growing in contrasting habitats can provide relevant information about ecological strategies that optimize reproductive effort. This may imply important consequences for biodiversity conservation and restoration. Therefore, we sought to investigate seed size-number trade-off in Euterpe edulis populations growing in plant communities in the Brazilian Atlantic Forest. Seed dry mass and seed number per bunch were evaluated in 2008 and 2009 in large remnants of the Seasonally Dry Forest, Restinga Forest and Atlantic Rainforest in southeastern Brazil, in 20 individuals per site and year. Seed size and seed number varied among forest types, but a seed size-number trade-off was neither observed within nor among populations. Positive association between seed size and number was found in the Atlantic Rainforest, and reduced seed crop was not accompanied by heavier seeds in the Restinga Forest. Seed dry mass declined in 2009 in all three forest types. Compared to seed number in 2008, palms of both the Restinga Forest and the Atlantic Rainforest produced in 2009 higher yields of smaller seeds - evidence of between years seed size-number trade-off -, while the Seasonally Dry Forest population produced a reduced number of smaller seeds. Such a flexible reproductive strategy, involving neutral, positive, and negative associations between seed size and number could enhance the ecological amplitude of this species and their potential to adapt to different environment conditions. (AU)

Processo FAPESP: 07/53088-1 - Contribuição da plasticidade e de adaptações específicas em sementes e plântulas de Euterpe edulis e Syagrus romanzoffiana para a ocorrência em três formações florestais do estado de São Paulo
Beneficiário:Pedro Henrique Santin Brancalion
Linha de fomento: Bolsas no Brasil - Doutorado Direto
Processo FAPESP: 99/09635-0 - Diversidade, dinâmica e conservação de árvores em florestas do estado de São Paulo: estudos em parcelas permanentes
Beneficiário:Ricardo Ribeiro Rodrigues
Linha de fomento: Auxílio à Pesquisa - Programa BIOTA - Temático