03581nab a2200301 i 4500003000900000005001700009008004100026040001800067072001400085072000800099072000800107100003900115100003100154100003100185100002800216100002300244245011600267500009900383520240300482650002702885650002702912650003202939650001302971773018702984856008103171942000803252999001903260BR-BrBNA20260318164611.0260318b2017    bl.ar|pooa||| 00| 0 por |  aBR-BrBNAbpor  aF03b3575  aF02  aP01  aCosta, Newton Clóvis Freitas da   aStedille, Lilian Iara Bet   aFerreira, Paula Iaschitzki  aGomes, Juliano Pereira   aMantovani, Adelar   aDispersão e Caracterização de Frutos de Myrceugenia euosma em Floresta Ombrófila Mista no Sul do Brasil  aPublicação on-line; Bibliography p. 9-11 (59 ref.); 4 tables; 2 illus; Summaries (En, Pt)   a

RESUMO

Este estudo objetivou caracterizar aspectos relacionados à dispersão de propágulos de Myrceugenia
euosma (O. Berg) D. Legrand (Myrtaceae) em um fragmento de Floresta Ombrófila Mista em
Urupema, SC. Para isso, foram avaliados 29 indivíduos reprodutivos quanto à frequência de
visitantes, chuva de propágulos, remoção e caracterização de frutos. Registraram-se 140 visitas
de pássaros, sem ocorrência de período preferencial. As espécies com maior frequência de visita
e maior consumo de frutos foram Zonotrichia capensis (tico-tico) e Stephanophorus diadematus
(cabeça-de-velho), consideradas potenciais dispersoras. A frequência de coletores contendo
propágulos de M. euosma diminuiu com o aumento da distância, apresentando comportamento
distinto em função do tipo de propágulo avaliado. Também foram verificadas sementes intactas
junto às fezes das aves nos coletores. A taxa de remoção de frutos depositados no chão foi de
22%, isso demonstra a relevância desse tema no processo de dispersão das espécies, merecendo
atenção na realização de estudos futuros.

Palavras-chave: síndrome de dispersão, remoção de frutos, ornitocoria.


Dispersal and Characteristics of Myrceugenia euosma Fruit in Mixed Ombrophilous Forests, Southern Brazil

ABSTRACT

This study aimed to characterize aspects related to propagules dispersion of Myrceugenia
euosma (Myrtaceae) in a fragment of Mixed Ombrophillous Forest, Urupema, SC. For this,
twenty-nine seed tree were evaluated for focal observation of visitors, propagules rain, removal
and characterization of fruits. We recorded 140 visits of birds, occurring without preferential visit
period. The species with higher visiting frequency and consumption of fruits were Zonotrichia
capensis (Rufous-collared Sparrow) and Stephanophorus diadematus (Diademed Tanager),
considered as potential dispersers. The frequency of collectors containing M. euosma propagules
decreased with increased distance, presenting distinct behavior depending the type of propagule
evaluated. We also found intact seeds in bird feces inside the collectors. The removal rate of
fruits deposited on the ground was 22%, demonstrating that this is an important topic on the
dispersal process and deserves attention in future studies.

Keywords: dispersal syndrome, fruit removal, ornithochory.  aDISPERSÃO DE SEMENTE  aREPRODUÇÃO VEGETAL  aPRESERVAÇÃO DA NATUREZA  aECOLOGIA0 029299347945dRio de Janeiro-RJ Instituto de Florestas - UFRRJ 1994o2025-0444tFloresta e Ambiente (Brazil)x1415-0980  /  ISSN 2179-8087 0nlinegv. 24 p. 1-11; (2017)wBR2026000220  uhttps://www.scielo.br/j/floram/a/SvvMgjhbFwNJFnKV6DR5NHq/?format=pdf&lang=pt  cANA  c340445d340445