Síndromes de dispersão de sementes em três trechos de vegetação ciliar (nascente, meio e foz) ao longo do rio Pindaíba, MT

Stefanello, Daniel; Fernandes-Bulhão, Clarissa; Martins, Sebastião Venâncio

doi:10.1590/s0100-67622009000600008

Cited by 27 publications

(15 citation statements)

References 14 publications

(5 reference statements)

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“…The proportion of dispersal classes found for seeds in the present work agrees with other studies about the main classes of dispersal in the Atlantic Forest, which reported a predominance of zoochory, followed by anemochory and autochory (Spina et al 2001;Sales et al 2007;Silva and Rodal 2009;Stefanello et al 2009). The multiple logistics regression suggests that physical dormancy is more likely to occur in seeds dispersed by autochory.…”

Section: Discussionsupporting

confidence: 92%

Seed dormancy in tree species of the Tropical Brazilian Atlantic Forest and its relationships with seed traits and environmental conditions

et al. 2015

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So far data in the literature indicate that (1) the relative proportion of tropical species with dormant versus non-dormant seeds tends to increase with a decrease in temperature and precipitation, (2) in rain forests, more species with non-dormant seeds have been found, (3) in rain forests, physiological dormancy is normally the most common type of seed dormancy, (4) the reasons why rain forests have species with dormant seeds are not well known, and studies have been done to determine if there is a relationship between the presence of dormancy in seeds with seed characteristics and environmental conditions of rain forests, and (5) it has been suggested that seed dormancy type could be connected to seed dispersion. The purpose of this work was to test, by compiling data from the literature for 162 woody species from the Atlantic Rain Forest of Brazil, the proportion of species with non-dormant and dormant seeds, and to determine if dormancy and the classes of dormancy of these species are associated with plant successional status, light environment, seed mass, and seed dispersal. The results found were (1) approximately 60 % of species had non-dormant seeds, and 40 % of species had dormant seeds, (2) physical and physiological dormancies were present in similar proportions, and combinational dormancy was the least common class of dormancy, (3) it was found that the chance that a species has physical or physiological dormancy doubles if it is a species found in a sunny environment, (4) a relationship between seed dormancy and non-dormancy, and the successional group of the species, was not found, (5) physical dormancy was highest in the non-climax group, and physiological dormancy occurred in similar proportions in non-climax and climax groups; however, a relationship was not found between class of succession and class of dormancy, (6) the proportion of the dispersal classes shows predominance for zoochory, followed by anemochory and autochory, (7) a multiple logistic regression analysis suggests that if the seeds are spread by autochory, then the chance that the seeds have physical dormancy is about eight times greater, and (8) seed mass was not associated with the presence or absence of dormancy; however, the species with physiological dormancy had seeds with smaller masses than those with physically dormant seeds. In short, for the Atlantic Rain Forest, based in compiled data from literature, it was found that seed dormancy type was related with sunny environments, dispersion, and seed size.

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Section: Discussionsupporting

confidence: 92%

Seed dormancy in tree species of the Tropical Brazilian Atlantic Forest and its relationships with seed traits and environmental conditions

et al. 2015

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“…A predominância da zoocoria tem sido relacionada como a principal síndrome de dispersão de matas ciliares em florestas tropicais e nos Cerrados brasileiros (BUDKE et al, 2005;De MARCHI, 2005;STEFANELLO et al, 2009STEFANELLO et al, , 2010SCARIOT;REIS, 2010;SILVA et al, 2012). Essas formações permitem a manutenção de fauna que busca refúgio, alimento e água (MARINHO-FILHO; GASTAL, 2000), assim favorecendo a zoocoria nesses ambientes (STEFANELLO et al, 2009).…”

Section: Discussionunclassified

Síndromes de dispersão de sementes em estágios sucessionais de mata ciliar, no extremo sul da Mata Atlântica, Arroio do Padre, RS, Brasil

et al. 2014

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RESUMO -A síndrome de dispersão de sementes está relacionada à migração das espécies e colonização de novos locais adequados para sobrevivência e reprodução. Foram estudados três estágios sucessionais de mata ciliar no domínio da Mata Atlântica (capoeira = cinco anos de regeneração; secundária = 45 anos de regeneração; e floresta madura = sem intervenção há 35 anos). As espécies foram classificadas nas síndromes de zoocoria, anemocoria e autocoria. A zoocoria predominou nos três estágios da sucessão da mata ciliar, com percentuais variáveis de 82% até 93% das espécies e 47% até 92% dos indivíduos. A segunda síndrome de dispersão mais comum foi a anemocoria, prevalecendo com elevada abundância relativa na capoeira (25% dos indivíduos). A autocoria ocorreu no sub-bosque da floresta madura com indivíduos da espécie Gymnanthes concolor. A participação da zoocoria nos três estágios da sucessão demonstra que a relação planta-animal tem elevada importância para a sucessão florestal em ambiente ciliar na região do extremo sul da Mata Atlântica.Palavras-chave: Ecologia florestal; Mata ripária; Regeneração florestal. SEED DISPERSAL SYNDROMES IN SUCCESSIONAL STAGES OF RIPARIAN VEGETATION IN THE SOUTHERN ATLANTIC FOREST, ARROIO DO PADRE, RS, BRAZIL

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“…Moreover, the species studied were also classified according to seed dispersal syndrome (Table 1), following van der Pilj (1982) classification, in zoochorous, when the dispersal is done by animals; anemochorous, when the dispersion is carried by the wind; and autochorous, when the dispersion occurs by explosive dehiscence or gravity. The species classification was made according to information on the biology of the species found in literature (Briton & Rose 1963;Maia 2004;Barbosa 2005;Barbosa et al 2005;Santos et al 2005;Pereira et al 2008;Moreira et al 2009;Silva & Rodal 2009;Stefanello et al 2009;Maragon et al 2010), expert consultation and increased knowledge of the authors. This classification was intended to detect patterns related to reproductive strategies of species.…”

Section: Data Analysesmentioning

confidence: 99%

Phenology of Tree Species Populations in Tropical Dry Forests of Southeastern Brazil

Nunes¹,

Luz²,

Braga³

2012

Phenology and Climate Change

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Síndromes de dispersão de sementes em três trechos de vegetação ciliar (nascente, meio e foz) ao longo do rio Pindaíba, MT

Cited by 27 publications

References 14 publications

Seed dormancy in tree species of the Tropical Brazilian Atlantic Forest and its relationships with seed traits and environmental conditions

Seed dormancy in tree species of the Tropical Brazilian Atlantic Forest and its relationships with seed traits and environmental conditions

Síndromes de dispersão de sementes em estágios sucessionais de mata ciliar, no extremo sul da Mata Atlântica, Arroio do Padre, RS, Brasil

Phenology of Tree Species Populations in Tropical Dry Forests of Southeastern Brazil

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