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Bird frugivory and seed germination of Myrsine umbellata and Myrsine lancifolia (Myrsinaceae) seeds in a cerrado fragment in southeastern Brazil Biota Neotropica
Guerta,Rafael Soave; Lucon,Lucas Gustavo; Motta-Junior,José Carlos; Vasconcellos,Luís Augusto da Silva; Figueiredo,Rodolfo Antônio de.
Birds are known to be important dispersers of plants, since the passage of seeds through the digestive tract often has a positive influence on germination percentage and speed. In this study, proportions of germination in different substrates were compared between Myrsine (Myrsinaceae) seeds collected manually and those ingested by birds. The guilds of birds that fed on M. umbellata and M. lancifolia were identified and comprise 24 and 12 species, respectively. A higher germination proportion was found among seeds defecated by birds and sowed in the study area. The study also found differences between the guilds of frugivores in both synchronopatric species. Therefore, we suggest that M. umbellata and M. lancifolia are important food sources by birds that...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Zoochory; Seed dispersal; Myrsine; Frugivorous birds; Cerrado.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000400005
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Effects of gut passage on the germination of seeds ingested by didelphid marsupials in a neotropical savanna Acta Botanica
Lessa,Leonardo Guimarães; Geise,Lena; Costa,Fabiane Nepomuceno.
We analyzed the effects that passage through the guts of seven didelphid species had on the seed germination of 10 plant species. This study was conducted in an area of riparian woodland in a cerrado (savanna) reserve in southeastern Brazil. We found seeds of 23 angiosperm species in 427 fecal samples obtained from seven didelphid species. The plant families most often represented by the seeds found in the fecal samples were Melastomataceae (5 species) and Rubiaceae (4 species) . Most gut-passed seeds showed no significant difference in germinability when compared with the hand-extracted seeds. Among the ingested seeds, only those of Clidemia urceolata DC. (Melastomataceae) and Myrcia sp. (Myrtaceae) showed an increase in germinability (final proportion of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cerrado; Frugivory; Scarification; Seed dispersal; Zoochory.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300009
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Endozoochory by Didelphis albiventris Lund, 1840 (Mammalia, Didelphimorphia) in a Semideciduous Seasonal Forest remnant in the South of Brazil Biota Neotropica
Junges,Susana de Oliveira; Consatti,Guilherme; Périco,Eduardo; Bordignon,Sérgio Augusto de Loreto; Freitas,Elisete Maria de; Cademartori,Cristina Vargas.
Abstract Seed dispersal is a process that is fundamental to maintenance of forest ecosystems, enabling plants to successfully germinate in sites that are favorable to their growth, minimizing risks of competition, the action of pathogens and predation by herbivores. Intraspecific and seasonal variations in fruit consumption by Didelphis albiventris, and its contribution to dispersal and germination of endozoochorous seeds were analyzed in a Semideciduous seasonal forest. The study was conducted at Morro do Coco, which is a hilly area in the municipal district of Viamão, RS, Brazil, bordering the shore of Guaíba lake (30º16’15”S, 51º02’54”W), between June 2013 and May 2014, with a total sampling effort of 2992 trap-nights. A total of 18 individuals were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: White-eared opossum; Germination inductor; Marsupial; Atlantic Rain Forest; Zoochory.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000100201
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Fruits and seeds of pouteriacf. sagotiana (baill.) eyma (sapotaceae) of floodplain forestestuary, Amapá, Brazil. Repositório Alice
VASCONCELOS, C.; COSTA, J.; RIBEIRO, G.; ISACKSSON, J.; GUEDES, M..
Tipo: Parte de livro Palavras-chave: Morphology; Zoochory; Dispersal; Amazon; Florestam.; Pouteria; Germination..
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/977699
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Litter production and seed rain in semideciduous forest fragments at different successional stages in the western part of the state of Paraná, Brazil Acta Botanica
Toscan,Maria Angélica Gonçalves; Temponi,Lívia Godinho; Guimarães,Ana Tereza Bittencourt; Cândido Junior,José Flávio.
We documented litter production and seed rain in fragments of semideciduous forest (SDF) in the western part of the state of Paraná, Brazil: a late successional fragment (LF); an early successional fragment (EF); and a reforested late successional fragment (RLF). In each fragment, we established three permanent plots with four litter traps each, corresponding to 12 litter traps per fragment. Botanical material was collected monthly between June 2011 and May 2012. We sorted the material by category: leaves; branches; reproductive structures; and miscellaneous. We analyzed the seed rain using the reproductive structures. Annual production was highest (11,560 kg.ha-1) in the LF, followed by the RLF, with 9330 kg.ha-1, and the EF, with 7838 kg.ha-1. The RLF...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Litterfall; Semideciduous forest; Succession; Zoochory.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000300012
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Pollination and dispersal systems in a Cerrado remnant (Brazilian Savanna) in Southeastern Brazil BABT
Ishara,Katia Losano; Maimoni-Rodella,Rita de Cassia Sindrônia.
The aim of this work was to identify the pollination and dispersal systems among the species in a disjunct marginal cerrado area and to compare the frequency of these systems to those found in other Neotropical vegetation. The floral and diaspore traits and the pollination and dispersal systems of 176 species were analysed in a cerrado remnant in Southeastern Brazil. The most frequent pollination system was melittophily (63% of the studied species) with the remaining 37% distributed among diverse pollination systems. Zoochory was the predominant system of dispersal (44.9%). The frequencies of melittophily and zoochory observed in diverse tropical areas were the main feature that allowed the formation of distinct groups in the dendrograms generated by...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dispersal syndrome; Melittophily; Pollination syndrome; Similarity; Zoochory.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000300025
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Potential seed dispersers: a new facet of the ecological role of Boa constrictor constrictor Linnaeus 1758 Biota Neotropica
Cabral,Sofia de O.; Freitas,Itainara da S.; Morlanes,Viviane; Katzenberger,Marco; Calabuig,Cecilia.
Abstract: The boa (Boa constrictor) is considered a top predator and its diet includes a wide variety of birds, mammals, and other reptiles, all related directly to their availability in the environment inhabited by the snake. Seven boas were found roadkilled on highways adjacent to conservation units in the semi-arid region of Rio Grande do Norte state, in northeastern Brazil. Their digestive tract was analyzed to identify food items and classify them according to their orientation in the tract. Among the food items found, the white-eared opossum (Didelphis albiventris) and the black-and-white tegu (Salvator merianae) were ingested head-first, while teeth of a punaré (Thrichomys laurentius) and a Spix's yellow-toothed cavy (Galea spixii) and hairs of an...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Caatinga; Feeding behavior; Snake; Seed dispersal; Zoochory.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000400203
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Variation in plant-animal interactions along an elevational gradient of moist forest in a semiarid area of Brazil Acta Botanica
Diogo,Ivan Jeferson Sampaio; Martins,Fernando Roberto; Verola,Christiano Franco; Costa,Itayguara Ribeiro da.
Pollination and dispersal are critical ecological processes that directly affect the reproductive success of plants and are important for understanding the structure of plant communities. We compiled data on pollination and dispersal syndromes of 406 plant species distributed among different elevations in Área de Proteção Ambiental da Serra de Baturité (APASB) in northeastern Brazil. We aim to determine how the dispersal and pollination of the flora in the mountainous rainforest of APASB are affected by climate, relief and growth form. We hypothesized that plant community is comprised of different ecological groups based on biotic and abiotic syndromes. Melittophily was the most common (57%) pollination syndrome followed by non-specialized and ornithophily...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Altitude; Humidity; Melittophily; Plant community; Topology; Water availability; Zoochory.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000100027
Registros recuperados: 8
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