Consulta: subjectFacets:"Seed dispersal"
Registros recuperados: 41
Data/hora: 07/06/2024 08:21:38

GPS and GIS Methods in an African Rain Forest: Applications to Tropical Ecology and Conservation
Provedor de dados: 7
Autores: Dominy, Nathaniel J; University of Hong Kong; njdominy@hkusua.hku.hk; Duncan, Brean; Dynamac Corporation, Kennedy Space Center; DuncaBW@kscems.ksc.nasa.gov.
Since the completion of the Navstar Global Positioning System (GPS) in 1995, the integration of GPS and Geographical Information Systems (GIS) technology has expanded to a great number of ecological and conservation applications. In tropical rain forest ecology, however, the technology has remained relatively neglected, despite its great potential. Notwithstanding cost, this is principally due to (1) the difficulty of quality satellite reception beneath a dense forest canopy, and (2) a degree of spatial error unacceptable to fine-scale vegetation mapping. Here, we report on the technical use of GPS/GIS in the rain forest of Kibale National Park, Uganda, and the methodology necessary to acquire high-accuracy spatial measurements. We conclude that the...
Tipo: Peer-Reviewed Reports
Palavras-chave: Kibale National Park; Uganda; Biodiversity conservation; Canopy interference; Differential correction; Frugivores; Geographic information systems; Global positioning system; Seed dispersal; Spatial ecology; Tropical rain forest; Vegetation mapping.
Ano: 2001

Pollen and seed flow patterns of Carapa guianensis Aublet. (Meliaceae) in two types of Amazonian forest
Provedor de dados: 74
Autores: Martins,Karina; Raposo,Andréa; Klimas,Christie A; Veasey,Elizabeth A; Kainer,Karen; Wadt,Lúcia Helena O.
Various factors affect spatial genetic structure in plant populations, including adult density and primary and secondary seed dispersal mechanisms. We evaluated pollen and seed dispersal distances and spatial genetic structure of Carapa guianensis Aublet. (Meliaceae) in occasionally inundated and terra firme forest environments that differed in tree densities and secondary seed dispersal agents. We used parentage analysis to obtain contemporary gene flow estimates and assessed the spatial genetic structure of adults and juveniles. Despite the higher density of adults (diameter at breast height ; 25 cm) and spatial aggregation in occasionally inundated forest, the average pollen dispersal distance was similar in both types of forest (195 ± 106min terra...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gene flow; Parentage analysis; Scatterhoarding; Seed dispersal; Spatial genetic structure.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000500017

Produção e dispersão de sementes em pimenta longa (Piper hispidinervum).
Provedor de dados: 14
Autores: SILVA, A. C. P. R. da; OLIVEIRA, M. N. de.
As características que influem na distribuição da variação genética nas espécies de plantas incluem a distribuição geográfica da espécie, o tamanho efetivo das populações, o modo de reprodução, o sistema de cruzamento, o mecanismo de dispersão de sementes e o estágio da sucessão em que a espécie é freqüente. Para iniciar um trabalho de domesticação e escolha do melhor método de melhoramento a ser utilizado, é premente que tais informações sejam conhecidas. A pimenta longa (Piper hispidinervum) é uma planta de ocorrência no Estado do Acre e com grande interesse econômico devido à produção de um óleo essencial rico em safrol. O objetivo do presente trabalho foi conhecer o sistema de produção e dispersão de sementes da espécie para utilizar na conservação da...
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Productividad de semillas; Diseminación de semillas; Aceites essenciales; Pipe hispidinervum; Variación genética.; Safrol; Melhoramento genético vegetal; Pimenta longa; Óleo essencial; Produção de sementes; Dispersão de semente; Variação genética.; Plant breeding; Piper longum; Essential oils; Safrole; Seed productivity; Seed dispersal; Genetic variation.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/495159

The agouti Dasyprocta leporina (Rodentia: Dasyproctidae) as seed disperser of the palm Astrocaryum aculeatissimum
Provedor de dados: 81
Autores: Pires,Alexandra S; Galetti,Mauro.
Some large-seeded plants depend heavily on agoutis for seedling recruitment. The importance of Dasyprocta leporina as seed disperser of the Atlantic Forest palm Astrocaryum aculeatissimum was evaluated using camera-traps and seed removal experiments. Agoutis were registered at 67% of the records obtained through the monitoring of mature fruits; palms were visited from 07:00 to 18:45 h. Dispersal distances ranged from 0.5 to 48.7 m (mean ± sd = 6.8 ± 9.1 m) and most of the removed seeds were buried (57.8%). These results corroborate the importance of agoutis for the seed dispersal of Astrocaryum palms.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Activity patterns; Atlantic Forest; Rodents; Seed dispersal; Seed predation.
Ano: 2012
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832012000100013

Food habits and seed dispersal by Thrichomys apereoides (Rodentia: Echimyidae) in a Brazilian Cerrado reserve
Provedor de dados: 81
Autores: Lessa,Leonardo G.; Costa,Fabiane N.
The food habits and seed dispersal promoted by Thrichomys apereoides (Rodentia, Echimyidae) were investigated in a Cerrado reserve in southeastern Brazil. Diet was determined by faecal analysis and seed dispersal was tested through seed germination experiments. As a result, 68 scats of T. apereoides were collected and in mean 76.5% contained arthropods, hymenoptera being the most frequent food item. Moderate to high germination rates obtained showed that, despite the efficiency of the rodent's feeding apparatus, small sized seeds of pioneer plants passed undamaged through the guts and remained viable. The high consumption of seeds belonging to pioneer plants (Clidemia urceolata and Miconia holosericea) emphasizes the importance of T. apereoides related to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado domain; Diet composition; Seed dispersal.
Ano: 2009
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832009000200019

Effects of sex, seed size and amount of dietary fiber on retention time of captive black howler monkeys
Provedor de dados: 81
Autores: dos Santos Neto,Raymundo T. M; Guevara,Roberto; Lopes,Maria A.
The effectiveness of a seed disperser depends, among various factors still poorly understood for many Neotropical primates, on the amount of time seeds are retained within its digestive tract. This study tested the effects of sex, seed size and dietary fiber content on seed retention time in the digestive tract of black howler monkeys (Alouatta caraya). Experiments were performed using six captive individuals (three of each sex), six seed species distributed in three size classes (small, medium, and large), and three percentages of leaves in the diet (15, 30 and 60% of total food ingested). Retention times were recorded for 1767 recovered seeds, corresponding to 55% of the total ingested. More than 98% of these seeds were undamaged, suggesting the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alouatta caraya; Gastrointestinal passage time; Diet composition; Seed dispersal; Seed disperser effectiveness.
Ano: 2018
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832018000100010

The role of Cerradomys Subflavus (Rodentia, Cricetidae) as seed predator and disperser of the palm Allagoptera arenaria
Provedor de dados: 81
Autores: Grenha,Viviane; Macedo,Margarete V.; Pires,Alexandra S.; Monteiro,Ricardo F.
Small rodents are among the most abundant vertebrate seed predators in the tropics and palm fruits are a rich source of energy for them. Allagoptera arenaria is a nurse plant species at restinga vegetation in southeastern Brazil. Forty-five adult A. arenaria were marked to estimate fruit crop size and seed predation by rodents. Two trapping sessions were carried out to identify the rodent seed predators. In addition, a fruit removal experiment was conducted to investigate the role of rodents as seed dispersers. Of the 7409 seeds collected, 24% were damaged by rodents. Predation rates ranged from 0 to 64% per plant and the number and the proportion of damaged seeds increased significantly with crop size. In the removal experiments, 64% of the fruits were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arecaceae; Rodentia; Seed dispersal; Seed predation; Arecaceae; Depredación de semillas; Dispersión de semillas; Rodentia.
Ano: 2010
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832010000100007

The European rabbit (Oryctolagus cuniculus L.) as seed disperser of the invasive opium poppy (Papaver somniferum L.) in Robinson Crusoe island, Chile
Provedor de dados: 81
Autores: Fernández,Alfonso; Sáiz,Francisco.
We investigated whether introduced European rabbit on Robinson Crusoe Island, Chile, has the potential to spread the seeds of the exotic Papaver somniferum (opium poppy) via endozoochory. A total of 1320 rabbit droppings were collected during early autumn in the study area and analyzed in laboratory with binocular magnifying glass. Seeds from six different species were found in the droppings: Papaver somniferum (Papaveraceae), Centaurea melitensis (Asteraceae), Amaranthus sp. (Amarantaceae), Melilotus indicus (Fabaceae), Rumex acetosella (Polygonaceae), and one unidentified species. Poppy seeds were dominant. Most seeds (82%) were destroyed during ingestion, but some of the intact seeds found in pellets remained viable. Germination rate of ingested seeds...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endozoochory; Gut passage; Invasive species; Seed dispersal.
Ano: 2007
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832007000100003

Relocation of Croton sonderianus (Euphorbiaceae) seeds by Pheidole fallax Mayr (Formicidae): a case of post-dispersal seed protection by ants?
Provedor de dados: 82
Autores: Lôbo,D; Tabarelli,M; Leal,IR.
Although seed dispersal by ants might reduce seed predation near the parent plants, predation on discarded seeds clustered on nest refuse piles may reduce any initial benefit provided by seed removal. Here we examine the fate of Croton sonderianus seeds that were discarded by Pheidole fallax Mayr ants on their nest refuses in caatinga vegetation of northeast Brazil. We collected all seeds discarded in refuse piles of 20 nests and within a radius of 50 cm from their borders, and examined them for evidence of predation. A total of 3,017 seeds were recorded either located in the P. fallax refuse piles (89.1%) or nest vicinity (10.9%). Predation was three fold higher in nest vicinity as compared to refuse piles. By removing seeds from beneath parent plants and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Caatinga; Myrmecochory; Seed dispersal; Semi-arid vegetation.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2011000400005

The role of Lithodoras dorsalis (Siluriformes: Doradidae) as seed disperser in Eastern Amazon
Provedor de dados: 83
Autores: Barbosa,Thiago A. P.; Montag,Luciano F. A.
ABSTRACT Ichthyochory is an important process responsible for the high diversity of plant species in tropical flooded forests. Thus, this study aimed to investigate the role of a catfish species, Lithodoras dorsalis, as seed disperser in the flooded forests at the Amazon River mouth, Brazil. Analyzing the stomach contents of 371 individuals of Lithodoras dorsalis, the Germination Potential (GP%) and Germination Speed Index (GSI) of seeds that were removed intact were investigated. This allowed us to evaluate the germination performance of two important species of plants in Amazonia, Euterpe oleracea (Açaí) and Montrichardia linifera (Aninga), after passage through the digestive tract of this catfish species. Given that digestion by L. dorsalis reduced the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Catfish; Euterpe oleracea; Germination Performance; Montrichardia linifera; Seed dispersal.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000200212

Estrutura e síndromes de dispersão de espécies arbóreas em um trecho de mata ciliar, Sirinhaém, Pernambuco, Brasil
Provedor de dados: 190
Autores: Silva, Roseane Karla Soares da; Feliciano, Ana Lícia Patriota; Marangon, Luiz Carlos; Lima, Rosival Barros de Andrade; Santos, Wedson Batista dos.
Este trabalho teve por objetivo conhecer a fitossociologia do componente arboreo em uma mata ciliar de um corrego que desagua no Rio Sirinhaem, localizado no Engenho Buranhem, Sirinhaem, PE e identificar as sindromes de dispersao das especies. O corrego esta situado em um fragmento de Floresta Ombrofila Densa de Terras Baixas, com 272 ha. Utilizou-se como area amostral um hectare (40 unidades amostrais, 10 m x 25 m) onde foram registrados 1.307 individuos arboreos com circunferencia a altura do peito (CAP) ≥ 15 cm. Foram identificadas 118 especies, pertencentes a 40 familias botanicas. Protium heptaphyllum e Pouteria sp.1 foram as especies mais abundantes. Em termos de valor de importancia (VI), as especies Protium heptaphyllum, Pouteria sp.1 e Virola...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seed dispersal; Atlantic Forest; Phytosociology Dispersão de sementes; Mata Atlântica; Fitossociologia.
Ano: 2012
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/284

Quantitative analysis of seed rain under natural and artificial perches in the Araucaria Forest
Provedor de dados: 190
Autores: Mikich, Sandra Bos; Possette, Rafael Fernando da Silva.
The objective of this study was to compare the efficiency in terms of number of seeds deposited under natural and artificial bird-perches set in degraded areas of Araucaria Forest. Six experimental units were used, each containing seed traps set under natural perches (NP), artificial perches (AP) and under open sky (OS). After 12 months of weekly sampling 26880 zoochoric seeds were collected under AP, 5729 under NP, and only seven under OS. Thus, the presence of perches increases dramatically seed deposition and NP are more or as efficient as AP when the effect of deposition area is taken into account.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Araucaria Forest; Bird perches; Forest restoration; Nucleation; Seed dispersal; Seed rain. Chuva de sementes; Dispersão de sementes; Floresta Ombrófila Mista; Nucleação; Poleiros; Recuperação de áreas degradadas.
Ano: 2010
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/123

Synchrony is more than overlap: measuring phenological synchronization considering time length and intensity
Provedor de dados: 88
Autores: Freitas,Leandro; Bolmgren,Kjell.
The degree of flowering and fruiting synchronization is believed to have ecological and evolutionary relevance at several scales. Here we discuss some measures that have been used to estimate synchrony and propose an index that incorporates both the entire length of an individual phenophase and variation in the number of flowers or fruits over that time period. This new index describes more accurately the phenological synchrony among individuals and populations.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Fitness; Phenology; Pollination; Population ecology; Seed dispersal.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042008000400017

Frugivory on Margaritaria nobilis L.f. (Euphorbiaceae): poor investment and mimetism
Provedor de dados: 88
Autores: Cazetta,Eliana; Zumstein,Liliane S.; Melo-Júnior,Tadeu A.; Galetti,Mauro.
Dehiscent fruits of Euphorbiaceae usually have two stages of seed dispersal, autochory followed by myrmecochory. Two stages of Margaritaria nobilis seed dispersal were described, the first stage autochoric followed by ornithocoric. Their dehiscent fruits are green and after they detached from the tree crown and fall on the ground, they open and expose blue metallic cocas. We studied the seed dispersal system of Margaritaria nobilis in a semi-deciduous forest in Brazil. In 80 h of focal observations, we recorded only 12 visits of frugivores, however the thrush Turdus leucomelas was the only frugivore that swallowed the fruits on the tree crown. Pitylus fuliginosus (Fringilidae) and Pionus maximiliani (Psittacidae) were mainly pulp eaters, dropping the seeds...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Euphorbiaceae; Frugivory; Mimetic fruits; Seed dispersal; Secondary compounds.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042008000200012

Aves como potenciais dispersoras de sementes de Ocotea pulchella Mart. (Lauraceae) numa área de vegetação de cerrado do sudeste brasileiro
Provedor de dados: 88
Autores: FRANCISCO,MERCIVAL R.; GALETTI,MAURO.
Embora os estudos de frugivoria e dispersão de sementes sejam importantes para a realização de planos de manejo e recuperação de ambientes degradados, pouco tem sido pesquisado sobre o assunto no cerrado brasileiro. Neste trabalho são apresentados aspectos da frugivoria e dispersão das sementes de Ocotea pulchella Mart. (Lauraceae) por aves. Treze espécies de aves foram registradas consumindo os frutos de O. pulchella em 72 horas de observação focal, entre os meses de agosto e outubro de 1999, numa área de cerrado da região central do estado de São Paulo (21º58' S, 47º52' W), Brasil. As principais espécies potencialmente dispersoras foram o sabiá-pardão, Turdus leucomelas (Muscicapidae), o sabiá-docampo, Mimus saturninus (Mimidae), o bem-te-vi, Pitangus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seed dispersal; Ocotea pulchella; Cerrado; Frugivory; Ornitochory.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042002000100003

Harvesting of Protium heptaphyllum (Aubl.) March. seeds (Burseraceae) by the leaf-cutting ant Atta sexdens L. promotes seed aggregation and seedling mortality
Provedor de dados: 88
Autores: Silva,Paulo D.; Leal,Inara R.; Wirth,Rainer; Tabarelli,Marcelo.
The role played by leaf-cutting ants as seed dispersers of non-myrmecochorous plants remains poorly understood. Here we document the harvesting of Protium heptaphyllum (Aubl.) March. seeds (Burseraceae) by the leaf-cutting ant Atta sexdens L. and its consequences for (1) seed deposition pattern; (2) seed germination; and (3) seedling mortality. The study was carried out at Dois Irmãos, a 390 ha reserve of Atlantic forest, northeast Brazil. Ant-seed harvesting on the ground was detected in 18.5% of all fruiting trees and ants harvested 41.1% ± 19.7% of the seed crop (mean ± s). In average, ants piled seeds 3.4 ± 2.2 m away from the trunk of parent trees and seed density in these piles reached 128.8 ± 138.8 seeds 0.25 m² during the peak of seed discarding by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic forest; Atta sexdens; Leaf-cutting ants; Protium heptaphyllum; Seed dispersal.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042007000300019

Does frugivory in Citharexylum solanaceum (Verbenaceae) drive nomadism in the Ipanema bat Pygoderma bilabiatum (Chiroptera: Phyllostomidae)?
Provedor de dados: 103
Autores: Scultori,Carolina; Silva,Wesley R.
ABSTRACT Neotropical bats are recognized as effective seed dispersers, especially of small-seeded pioneer plants during early stages of forest regeneration. There had been few reports on the ecology of the bat Pygoderma bilabiatum (Wagner, 1843), which appears to be mainly frugivorous and to undertake vertical migrations in Brazil. Our analyzes of fecal samples of P. bilabiatum specimens captured in mist nets and direct observations of their feeding behavior on Citharexylum solanaceum Cham. fruits in a mosaic of restored forests and forest fragments in southeastern Brazil constitute one of the few records of consumption of large-seeded fruits by P. bilabiatum, and indicate that it may be an important disperser for large-seeded plants. We found evidence...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Movements; Philopatry; Fruit-bat interactions; Seed dispersal.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702018000100336

Seed size-number trade-off in Euterpe edulis in plant communities of the Atlantic Forest
Provedor de dados: 63
Autores: Brancalion,Pedro Henrique Santin; Rodrigues,Ricardo Ribeiro.
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...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seed ecology; Seed dispersal; Seed size optimization; Plant reproductive effort; Seedling establishment.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000300007

Fruit removal of a wild tomato, Solanum granulosoleprosum Dunal (Solanaceae), by birds, bats and non-flying mammals in an urban Brazilian environment
Provedor de dados: 104
Autores: Cáceres,Nilton Carlos; Moura,Maurício Osvaldo.
A study of removal of fruits of the wild tomato, Solanum granulosoleprosum Dunal (N = 5 plants), by vertebrates was carried out in an urban environment of southern Brazil from January to May 1997 and February 1998. To verify diurnal and nocturnal removals, fruits were counted in several fruit bunches, being classified by size and color. Diurnal observations were made on plants to verify bird removal. A mist net was placed among the plants from the evening to 23:00 h to verify bat consumption. Live traps baited with S. granulosoleprosum fruits were placed on the ground among plants to verify terrestrial removers. On average it was found two ripe fruits available per bunch/day, but unripe, small, fruits were dominant (70%). Nocturnal mammals and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aves; Food partitioning; Fructification pattern; Frugivory; Mammalia; Seed dispersal.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000300025

Genetic diversity in rosewood saplings (Aniba rosaeodora ducke, Lauraceae): an ecological approach
Provedor de dados: 36
Autores: Santos,Ronaldo Pereira; Spironello,Wilson Roberto; Sampaio,Paulo de Tarso Barbosa.
This article takes an ecological approach to the genetic diversity of Rosewood (Aniba rosaeodora Ducke) in a central Amazonian terra firme forest north of Manaus. Planted Rosewood setting, under partial shaded canopy, were assessed in terms of fruiting production, frugivory, and seed dispersal. Using RAPD molecular analysis procedures, the influence of the spatial distribution of adult trees on the genetic diversity (polymorphism) of saplings was assessed with genetic samples from 34 reproductive trees and 60 saplings. The density and distribution patterns the reproductive trees did not modify the sapling"s diversity (1.86%, AMOVA). Two types of adult tree dispersion were identified; i) clumped and ii) more widely dispersed. Polymorphism (77.5%) and gene...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonian tree; RAPD; Seed dispersal; Gene flow; Genetic diversity.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672008000400014

Niche differentiation mechanisms among canopy frugivores and zoochoric trees in the northeastern extreme of the Amazon
Provedor de dados: 36
Autores: TODESCHINI,Felipe; TOLEDO,José Julio de; ROSALINO,Luis Miguel; HILÁRIO,Renato Richard.
ABSTRACT Frugivores and zoocoric trees represent an important proportion of tropical rainforest biodiversity. As niche differences favor species coexistence, we aimed to evaluate morphological and temporal niche segregation mechanisms among zoochoric trees and canopy frugivores in a tropical rainforest in the northeastern extreme of the Brazilian Amazon. We tested the effects of fruit morphology, tree size, frugivore body size and time of day on fruit consumption. We recorded the frugivore species that fed on 72 trees (44 species, 22 genera) and whether these frugivores swallowed the seeds. We monitored trees only once from 07:00 to 17:00 h between January and September 2017. We observed fruit consumption in 20 of the 72 trees. Seventy-three frugivore...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amapá National Forest; Frugivory; Phenology; Seed dispersal; Tropical rainforest.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000300263

Fruits of the Amazonian Forest. Part II: Sapotaceae
Provedor de dados: 36
Autores: Marc G.M,VAN ROOSMALEN; GARCIA,Olímpia Maria da Cruz Gomes.
Descriptions and line drawings of fruits and seeds from 153 woody species of the family Sapotaceae occurring in Amazonia are presented, along with their preferred habitat, distribution, habit and seed dispersal.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonia; Sapotaceae; Fruits; Morphology; Ecology; Seed dispersal.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672000000200187

Frugivory by birds on Schefflera morototoni (Araliaceae) in a Cerrado-Amazon orest transition area, eastern Mato Grosso, Brazil
Provedor de dados: 36
Autores: PURIFICAÇÃO,Keila Nunes; PASCOTTO,Márcia Cristina; MOHR,Adriana; LENZA,Eddie.
Schefflera morototoni fruits are important food source for neotropical frugivorous birds. The objectives of the present study were to record bird species that consumed fruits of S. morototoni in a forest in the transition Cerrado-Amazon Forest, Mato Grosso, Brazil and evaluate the potential of these bird species as seed dispersers of this plant species. During 31 observation hours, from November 1 to 5, 2011, 23 bird species were recorded consuming S. morototoni fruits. Out of these, 20 bird species were considered potential seed dispersers, as they swallow the fruits whole. The species consuming the greatest number of fruits were Aburria cujubi (24% of total consumed fruits), Pteroglossus castanotis (18%), Tangara palmarum (12%), Patagioenas speciosa...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avifauna; Ecotone; Seed dispersal.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672015000100057

The reproductive biology of the early-divergent genus Anaxagorea (Annonaceae), and its significance for the evolutionary development of the family
Provedor de dados: 39
Autores: Gottsberger,Gerhard.
ABSTRACT Data of six studied Neotropical Anaxagorea species are analyzed and discussed with respect to the population structure, flowering phenology, flower morphology, anthesis, scent emission, thermogenesis, floral visitors, breeding system, fruit-set and seed dispersal. The probably reason for the patchy distribution of small populations of Anaxagorea species within lowland tropical forests is given. A novel explanation of the functional significance of ruminate endosperm is presented. Flowering of the species follows either the annual or the continuous flowering pattern. All studied species have diurnal, two-day lasting, protogynous anthesis; several species have thermogenic flowers. Self-compatibility appears to be the prevailing reproductive system...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anaxagorea; Pollination; Reproductive biology; Radiation and diversification of Annonaceae; Reproductive systems; Ruminate endosperm; Seed dispersal.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000200313

Plant diversity in hedgerows amidst Atlantic Forest fragments
Provedor de dados: 39
Autores: Oliveira,Carolina C. C.; Pereira,Lya C. S. M.; Lima,André; Shimabukuro,Yosio E.; Torezan,José Marcelo D.
Hedgerows are linear structures found in agricultural landscapes that may facilitate dispersal of plants and animals and also serve as habitat. The aim of this study was to investigate the relationships among diversity and ecological traits of woody plants, hedgerow characteristics (size, age, and origin), and the structure of the surrounding Atlantic Forest landscape. Field data were collected from 14 hedgerows, and landscape metrics from 1000-m buffers surrounding hedgerows were recorded from a thematic map. In all sampled hedgerows, arboreal species were predominantly zoochoric and early-succession species, and hedgerow width was an important factor explaining the richness and abundance of this group of species. Connection with forest vegetation did not...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Ecological corridors; Forest fragmentation; Hedgerows; Landscape ecology; Rural landscape; Seed dispersal; Woody plants.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000200239

Effects of gut passage on the germination of seeds ingested by didelphid marsupials in a neotropical savanna
Provedor de dados: 39
Autores: 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

Host specificity and experimental assessment of the early establishment of the mistletoe Phoradendron crassifolium (Pohl ex DC.) Eichler (Santalaceae) in a fragment of Atlantic Forest in southeast Brazil
Provedor de dados: 39
Autores: Messias,Patrícia Aparecida; Vidal Jr.,João de Deus; Koch,Ingrid; Christianini,Alexander V.
Mistletoe establishment relies heavily on a seed reaching a proper host plant. Small frugivorous birds usually disperse large numbers of mistletoe seeds. However, in the field, mistletoes are absent from some potential available hosts. We investigated whether the mistletoe Phoradendron crassifolium has some preferences for specific host trees in a fragment of Atlantic Forest in southeast Brazil. We surveyed 397 tree individuals of 50 species within 25 families. Seven of those species (14%) bore P. crassifolium infections. Although prevalence at the individual level was low (11.6%), there were marked deviations in infection levels among species and families. Most (87%) of the infections (40 of 46) occurred in species belonging to the families Anacardiaceae...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Host compatibility; Prevalence; Seed dispersal; Seed predation.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000400012

What is on the menu for frugivorous birds in the Cerrado? Fruiting phenology and nutritional traits highlight the importance of habitat complementarity
Provedor de dados: 39
Autores: Maruyama,Pietro Kiyoshi; Melo,Celine; Pascoal,Camila; Vicente,Eduardo; Cardoso,João Custódio Fernandes; Brito,Vinícius Lourenço Garcia; Oliveira,Paulo Eugênio.
ABSTRACT The relationship between plants and frugivorous animals is modulated by morphological and nutritional characteristics of fruits, as well as their seasonal availability across habitats. We evaluated fruiting phenology, fruit morphology and nutritional characteristics of 35 abundant plant species from 15 families associated with frugivorous birds from distinct habitats in the Cerrado (savanna, forest, and palm swamp). For a subset of 16 plant species, we also evaluated the overlap in interactions with frugivorous birds using data from the literature. Open-habitat plants had their fruiting peak during the rainy season, while fruiting of forest species was evenly distributed across the year. Plants of the same family exhibited similar fruit morphology...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Copaifera langsdorffii; Matayba guianensis; Miconia rubiginosa; Neotropical savanna; Ouratea; Rourea induta; Rudgea viburnoides; Seed dispersal; Styrax ferrugineus; Vereda.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000300572

Reproductive phenology, seed removal and early regeneration in relation to distance from parental plants of a native palm in small Atlantic forest fragments
Provedor de dados: 39
Autores: Mariano,Vanessa; Christianini,Alexander V.
ABSTRACT The Brazilian Atlantic Forest is a global biodiversity hotspot, but most of what remains are small fragments. Small fragments are often harsh environments for forest plant recruitment due to edge effects and the loss of frugivorous animals that provide seed dispersal. We recorded the one-year reproductive phenology of the keystone palm Syagrus romanzoffiana in small (&lt;2.5ha) Atlantic Forest fragments in southeastern Brazil. We tested the Janzen-Connell hypothesis with seed-removal experiments and followed the five-year survival of recruits in relation to the distance from parental plants. Palms produced many fruits throughout the year (mean 2,600/plant). More seedlings were found away from parental plants than near them, thereby supporting the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazilian Atlantic Forest; Crop size; Habitat fragmentation; Janzen-Connell hypothesis; Large seeds; Palms; Seed dispersal; Seed predation; Seedling survival; Syagrus romanzoffiana.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000200176

Consumption of Euterpe edulis fruit by wildlife: implications for conservation and management of the Southern Brazilian Atlantic Forest
Provedor de dados: 42
Autores: SILVA,JULIANO Z. DA; REIS,MAURÍCIO S. DOS.
Abstract: This study aimed to measure the wildlife consumption of Euterpe edulis fruit and use this data to discuss management possibilities. To estimate infructescence fruit volume consumed, collectors were installed in fruit-bearing palms. To characterize consumption from the ground, samples were placed next to fruiting palms. To identify wildlife and their activities, camera traps were installed in infructescences and on the ground. The results suggested that there was a small fruit surplus (1.8 %), and this finding indicated the possibility of a harvest to reduce food for the wildlife. However, recurrent variations in the annual fruit production (21.4 %) were also noted, and suggested that wildlife could tolerate some fruit harvesting. Thus, a harvest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Natural regeneration; Non-timber forest products; Rain forest; Seed dispersal; Seed predation.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000100628

Dispersion and aggregation patterns of tree species in Araucaria Forest, Southern Brazil
Provedor de dados: 42
Autores: MAÇANEIRO,JOÃO PAULO DE; GASPER,ANDRÉ LUÍS DE; GALVÃO,FRANKLIN; SCHORN,LAURI A.
Abstract Studies about dispersal syndromes and spatial distribution can provide information about species ecology. However, few studies analyze these ecological patterns in different vegetation layers. In this work, we verified the relationship between the dispersion syndromes and the spatial distribution in different layers in Araucaria Forest. We sampled 180 plots with size and inclusion criteria that changed according to the vegetative layer. We sampled 15,545 individuals in 103 tree species. We found significant differences between the number of species in the dispersion syndromes (χ2 = 11.52; P ≤ 0.05) and spatial distribution patterns (χ2 = 10.94; P ≤ 0.05), being zoochoric and tends to clustering the most predominant. We also found a significant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Araucaria forest; Seed dispersal; Spatial distribution; Layers analysis.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000502397

Extraction of high-quality host DNA from feces and regurgitated seeds: a useful tool for vertebrate ecological studies
Provedor de dados: 48
Autores: MARRERO,PATRICIA; FREGEL,ROSA; CABRERA,VICENTE M; NOGALES,MANUEL.
DNA extraction methods for genotyping non-invasive samples have led to great advances in molecular research for ecological studies, and have been particularly useful for analyzing threatened species. However, scarce amounts of fragmented DNA and the presence of Taq polymerase inhibitors in non-invasive samples are potential problems for subsequent PCR amplifications. In this study we describe a novel technique for extracting DNA from alimentary tract cells found on external surfaces of feces and regurgitated seeds. The presence of contaminants and inhibitors is minimized and samples are preserved intact for use in other ecological research (e.g. trophic studies). The amplification efficiency and purity of the extracted DNA from feces were significantly...
Tipo: Journal article
Palavras-chave: DNA extraction; Ecological studies; Guanidine thiocyanate; Non-invasive method; Pigeons; Seed dispersal.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602009000200002

Diversity of functional traits of fleshy fruits in a species-rich Atlantic rain forest
Provedor de dados: 49
Autores: Galetti,Mauro; Pizo,Marco Aurélio; Morellato,Leonor Patrícia Cerdeira.
Production of vertebrate-dispersed fruits is the most common strategy of tropical woody plants to disperse their seeds. Few studies have documented community-wide variation of fruit morphology and chemistry of vertebrate-dispersed fruits in species-rich tropical communities. We examined the functional diversity of fruit morphological and chemical traits of 186 species representing 57 plant families in an undisturbed lowland plant community in the Atlantic rain forest of SE, Brazil. We were particularly interested in associating morphological and chemical fruit traits to their main seed dispersers, either birds, mammals or 'mixed' (i.e. fruits eaten by birds and mammals). The morphological and chemical traits of fruits at the study site generally resemble...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seed dispersal; Frugivores; Fruit syndromes; Fruit chemical content.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000100019

Potential seed dispersal by Didelphis albiventris (Marsupialia, Didelphidae) in highly disturbed environment
Provedor de dados: 49
Autores: Cantor,Mauricio; Ferreira,Letícia Andrade; Silva,Wesley Rodrigues; Setz,Eleonore Zulnara Freire.
Urban forests are usually isolated and highly disturbed, however they are important shelters for tolerant animal species. Their food habits expose the different ecological roles these animals perform in the habitat. We analyzed the contribution of Didelphis albiventris Lund (1840), as a seed disperser, to the vegetation renewal of an urban forest fragment, describing its frugivorous diet and testing the viability of ingested seeds. Both male and female of white-eared opossum included a vast variety of items in their diet, mainly invertebrates and fruits. Fruits were consumed during all year round and seasonality was not observed. The majority of consumed fruits was from pioneer plant species, which is common in disturbed areas, in accordance to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Didelphimorphia; Seed dispersal; Seed germination; Forest restoration; Remnant forest; Didelphis albiventris.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032010000200004

Seed inflow to a forest patch promoted by understory frugivorous birds
Provedor de dados: 49
Autores: Gomes,Verônica Souza da Mota; Tamashiro,Jorge Yoshio; Silva,Wesley Rodrigues.
We studied the contribution of understory frugivorous birds to the seed inflow into a late successional Atlantic forest patch in southeastern Brazil. Five sampling units were established in the study site, each composed of a line of six mist nets and two adjacent plots containing six seed traps. Immigrant seed species were more frequent in seed traps during the rainy season, when fruit production was higher. On the other hand, the frequency of occurrence of immigrant seed species found in fecal samples of the understory frugivores was higher during the dry season. Although understory frugivorous birds were not responsible for the temporal pattern of the seed rain, they can play an important role in bringing edge plant species that will eventually colonize...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic forest; Frugivory; Immigrant seeds; Seed dispersal.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000400010

The Crab-eating Fox (Cerdocyon thous) as a secondary seed disperser of Eugenia umbelliflora (Myrtaceae) in a Restinga forest of southeastern Brazil
Provedor de dados: 49
Autores: Cazetta,Eliana; Galetti,Mauro.
The crab-eating fox (Cerdocyon thous) exhibits a very generalist habit and fruits compose a large proportion of its diet. However, few studies evaluated the importance of this animal as seed disperser. In the Restinga forest, in the Atlantic forest of Brazil, C. thous consumes fruits of Eugenia umbelliflora, a Myrtaceae species, which is dispersed chiefly by birds. This study evaluated the effects of gut transit on seed germination, and size selection of E. umbelliflora fruits by the crab-eating fox. We did not find differences on germination rates between seeds dispersed by foxes and control ones, but seeds dispersed by foxes germinated faster, which may be important for plant recruitment. Seeds consumed by C. thous were smaller than those available on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Carnivores; Frugivory; Fruit choice; Seed dispersal.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000200027

Planting coconuts in Indian villages: ethnoecological aspects and evaluation of a "sustainable development" project
Provedor de dados: 49
Autores: Salm,Rodolfo; Feder,Lisa; Jalles-Filho,Euphly; Jardim,Mario Augusto Gonçalves.
Although scientists and policy makers embrace the general concept "sustainable development", there are few who agree on how to carry out sustainable development in specific situations. As such, sustainable development projects among ethnoscientists are widely critiqued as to how well they are inter-culturally formulated. Here we report on a controversial case of planting coconuts in Kayapó Indian villages of southern Pará, Brazil and offer our own self-critique. We began under the premise that reforestation and Kayapó general health/nutrition go hand in hand. Therefore, the flourishing of coconut culture will contribute to forest conservation in the long run, in itself, and simultaneously, maintain good nutrition for the Kayapó people who protect the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coconuts; Deforestation; Economy; Indians; Palm; Seed dispersal; Tropical Forest.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032010000100014

Interactions between frugivorous birds and plants in savanna and forest formations of the Cerrado
Provedor de dados: 49
Autores: Purificação,Keila Nunes; Pascotto,Márcia Cristina; Pedroni,Fernando; Pereira,Jessiane Mayara Nogueira; Lima,Naftali Alves.
We recorded interactions between frugivorous birds and plants in the Cerrado and we assessed the role and importance of birds as potential seed dispersers. We analyzed the distribution of recorded feeding events, bird-plant interactions, and bird species composition between savanna and forest formations and between the dry and rainy seasons. Samplings were carried out from August 2009 to October 2010 and from November 2011 to August 2012 by means of line transects and focal observations. We recorded 348 feeding events and 187 interactions involving 44 plant species and 60 bird species. Most of the feeding events were observed in the forests and during the dry season (χ2 = 39.529; gl = 1; p &lt; 0.001). However, no significant difference was found in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mutualistic interactions; Neotropical savanna; Seasonality; Seed dispersal.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032014000400105

Bird frugivory and seed germination of Myrsine umbellata and Myrsine lancifolia (Myrsinaceae) seeds in a cerrado fragment in southeastern Brazil
Provedor de dados: 49
Autores: 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

Potential seed dispersers: a new facet of the ecological role of Boa constrictor constrictor Linnaeus 1758
Provedor de dados: 49
Autores: 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

Diet of Astyanax species (Teleostei, Characidae) in an Atlantic Forest River in Southern Brazil
Provedor de dados: 52
Autores: Vilella,Fábio Silveira; Becker,Fernando Gertum; Hartz,Sandra Maria.
Feeding habits of six species of Astyanax from river Maquiné are described. Fishes were sampled bi-monthly from November/95 to September/96 in two zones of the river. Items were identified, counted and had their abundance estimated according to a semi-quantitative scale. Frequency of occurrence, alimentary importance index (IFI) values and a similarity analysis of diets for each species-river zone sample were examined. All the species were considered typically omnivorous, with insects and vegetal matter being the most important items in their diet. These species could act as seed dispersers, particularly for macrophytes. Intra-specific spatial differences were not observed in comparisons of samples from two diferent regions of the river, except for A....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diet; Seed dispersal; Fish; Astyanax; Atlantic Forest; Brazil.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000200015