Seed size: a key trait determining species distribution and diversity of dry tropical forest in northern India

Khurana, Ekta; Sagar, R.; Singh, Jaya

doi:10.1016/j.actao.2005.10.003

Cited by 23 publications

(17 citation statements)

References 30 publications

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“…Essas características são comuns nas espécies que ocorrem em ambientes abertos e em estágios iniciais de sucessão (PIÑA-RODRIGUES et al, 1990). Além disso, os frutos secos e as sementes disseminadas pelo vento geralmente são dispersos a grandes distâncias, em relação à planta mãe (KHURANA et al, 2006), o que representa uma vantagem para a sua colonização em outras áreas. Além do menor tamanho das sementes das espécies pioneiras, estas tendem a produzir sementes em grande quantidade por fruto, como, por exemplo, Clethra scabra, Moquiniastrum polymorphum, Lamanonia ternata e Luehea divaricata.…”

Section: Discussionunclassified

Morfologia De Diásporos E Plântulas De Espécies Arbóreas Da Floresta Com Araucária, No Sul Do Brasil

Gogosz

Boerger

Cosmo

et al. 2015

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Neste estudo foram caracterizados morfologicamente frutos, sementes e plântulas de espécies da Floresta com Araucária (Floresta Ombrófila Mista), visando entender as estratégias de estabelecimento de diferentes grupos ecológicos. Frutos de 18 espécies arbóreas foram coletados na região de Curitiba, Paraná. As sementes foram semeadas em vermiculita e mantidas em laboratório, até a fase de plântula. Nas espécies pioneiras predominam frutos secos, deiscentes, sementes exalbuminosas, pequenas, com estruturas que favorecem a dispersão anemocórica e plântulas com cotilédones finos, foliáceos com tricomas. Nas secundárias tardias os frutos são carnosos com dispersão zoocórica, as sementes são albuminosas e as plântulas possuem cotilédones crassos, foliáceos, e, em alguns casos, também com função de reserva. Nas secundárias iniciais, as características são variáveis. A caracterização morfológica realizada dá subsídio, no contexto da ecologia funcional, à interpretação das diferentes estratégias de estabelecimento das espécies.AbstractMorphology of diaspore and seedling of tree species of the Araucaria forest (Subtropical Ombrophilous Forest) in southern Brazil. This study characterized morphologically the fruits, seeds and seedlings of species of Araucaria Forest, aiming to understand the strategies of establishing different successional groups. Therefore, fruits of 18 tree species were collected in Curitiba, Paraná. Then the seeds were sown in vermiculite and remained in the laboratory until the seedling stage. The pioneer species have predominantly dehiscent dry fruits, unalbuminous seeds, small structures that favor anemochoric dispersal and seedlings with thin cotyledons, foliaceous with trichomes. In late secondary species the fruits are fleshy with zoochorous dispersal, seeds are albuminous and seedlings present fleshy cotyledons, foliaceous, and in some cases also reserve function. In the early secondary species, the characteristics are variable. Morphological characterization allows the interpretation of functional ecology, the different strategies of establishment of species.Keywords: Succession groups; establishment; functional morphology; Mixed Ombrophilous Forest.

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Section: Discussionunclassified

Morfologia De Diásporos E Plântulas De Espécies Arbóreas Da Floresta Com Araucária, No Sul Do Brasil

Gogosz

Boerger

Cosmo

et al. 2015

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“…Out of a total of 12 extracted plant species' seeds, seeds of five species fell into the SWC-II (0.01-1.0 g) category, three species into SWC-I (0-0.1 g), and two species each into SWC-III (1.01-2.0 g) and SWC-IV (2.0-3.0 g) (Table). Khurana et al (2006) reported that the mediumweight seeds have more abundance than smaller seeds. According to Grubb (1998) and Putz and Appanah (1987), the seeds of successional plants species (Alphitonia spp., Clerodendrum spp., Euphorbia spp., etc.)…”

Section: Resultsmentioning

confidence: 99%

Role of Indian flying fox Pteropus giganteus Brünnich, 1782 (Chiroptera: Pteropodidae) as a seed disperser in urban areas of Lahore, Pakistan

Gulraiz¹,

Javid²,

Mahmood‐ul‐Hassan³

et al. 2016

Turk J Zool

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This 1-year study, extending from January to December 2011, was conducted to investigate the role of the Indian flying fox (Pteropus giganteus) as a seed disperser in Lahore, Pakistan. Ejecta of the species from two roosting sites, i.e. Jinnah garden and Lalazar garden, was collected and the plant seeds were extracted from bat boluses and guano. Various seeds of edible trees and forest plantation species extracted from ejecta of P. giganteus included areca palm (Areca catechu), coromandel ebony (Diospyros melanoxylon), Indian gaabh (D. peregrina), lemon-scented gum (Eucalyptus citriodora), Chinese fan palm (Livistona chinensis), sapodilla (Manilkara zapota), mahwa (Madhuca longifolia), Indian lilac (Melia azedarach), cajeput tree (Melaleuca leucadendra), rambutan (Nephelium lappaceum), guava (Psidium guajava), and janbolanum plum (Syzygium jambolanum). Measurements of the extracted seeds' length (mm), diameter (mm), and weight (g) were taken and the seeds of jack fruit (Artocarpus heterophyllus) were found the longest (40 mm) with the maximum average diameter (50 mm) while the rambutan (N. lappaceum) seeds were the heaviest (3.4 g). It can be concluded from the present study that P. giganteus is a seed disperser and transporter of heavier seeds as heavier seeds are mammal-dependent for their dispersal.

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“…Plant abundance is restrained by seed mass (Guo et al 2000). Small-seeded species tend to have a greater abundance than large-seeded species (Rees,1995); Guo et al, 2000;Khurana et al 2006). Seed mass is also associated with other physical factors such as landform characteristics (Csontos et al, 2004).…”

Section: Discussionmentioning

confidence: 99%

“…Seed mass is a key ecological trait that influences many aspects of a species' regeneration strategy, including seedling survival rates, seed dispersal syndrome, and the number of seeds that can be produced for a given amount of energy (Leishman et al 2000;Moles et al 2007). Khurana et al (2006) indicated that small-seeded species, which were generally wind-dispersed, were more widely distributed, at this local scale, compared to large-seeded species. Individuals of small-seeded species were distributed more widely than those of large-seeded species.…”

Section: Discussionmentioning

confidence: 99%

Seed Characters of Graminecious Weeds in Damietta, Nile Delta

Khedr

El-Demerdash

El-Hinawy

et al. 2011

Journal of Plant Production

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Seed characters of 29 plant species belonging to 27 genera of the family poaceae in Damietta district were studied. Qualitative traits such as seed dispersal, seed shape, seed outline and seed texture have been examined. Also, quantitative traits had been measured such as seed mass, seed width and seed length using vernier caliper in mm. Seeds of 15 species were germinated without special pretreatments, 14 species germinated with special pre-treatments such as KNO3, boiling water & H2SO4. Results indicated that small seeded species were generally wind dispersed and more widely distributed. The relationships between seed mass, dispersal mode and plant distribution in different habitats were significant. The findings of this study support the strategy for control of weeds by understanding seed characters of graminecious weeds in the study area.

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Seed size: a key trait determining species distribution and diversity of dry tropical forest in northern India

Cited by 23 publications

References 30 publications

Morfologia De Diásporos E Plântulas De Espécies Arbóreas Da Floresta Com Araucária, No Sul Do Brasil

Morfologia De Diásporos E Plântulas De Espécies Arbóreas Da Floresta Com Araucária, No Sul Do Brasil

Role of Indian flying fox Pteropus giganteus Brünnich, 1782 (Chiroptera: Pteropodidae) as a seed disperser in urban areas of Lahore, Pakistan

Seed Characters of Graminecious Weeds in Damietta, Nile Delta

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