Data collected on a free ranging group of Tana River mangabeys (Cercocebus galeritus) indicates that this endangered primate species, which has previously been regarded as a seed predator, plays an important role in s...Data collected on a free ranging group of Tana River mangabeys (Cercocebus galeritus) indicates that this endangered primate species, which has previously been regarded as a seed predator, plays an important role in seed dispersal and do contribute to the regeneration of a highly fragmented gallery forest. We observed fruit handling behavior and the post-dispersal fate of seeds ingested by the mangabeys. The two main fruit handling behaviors observed, fruit swallowing and processing fruits in cheek pouches, positively contributed to seed disper- sal. Seed predation was not common during this study, apart from a few particular plant species such as Acacia robusta and Alangium salviifolium with non-fleshy fruits. We found a correlation between seed predation and fruit availability, respectively seasonal differential specific dispersal efficiency. The role of the mangabeys in dispersing seeds and facilitating forest regeneration is enhanced by their movement across forest patches through non-forested matrix, which contributes to the deposition of seeds and regeneration in these habitat gaps.展开更多
There are four reproductive and regenerative countermeasures of the main woody species in MaoLan Karst Forest.(1)The seed has shorter life span.The ripe seeds germinate rapidly to form seedling when it has fallen into...There are four reproductive and regenerative countermeasures of the main woody species in MaoLan Karst Forest.(1)The seed has shorter life span.The ripe seeds germinate rapidly to form seedling when it has fallen into the soil. The seedlings grow slowly to wait till the gap emerges.The seedlings grow rapidly and join in the present population as soon as the gap emerges.(2)The seed has shorter life span.The ripe seeds germinate rapidly to form seedling when it has fallen into the soil.If there are gaps in the forest the seedling grow rapidly and join in the present population,the seedlings will die speedly.(3)The seed has shorter life span.If there are gaps in the forest,the ripe seeds germinate when it has fallen into the soil and grow rapidly to join in the present population,otherwise,the seeds will lose their germination ability.(4)The seed has longer life span.If there are gaps in the forest,the ripe seeds germinate when it has fallen into the soil and grow rapidly to join in the present population,otherwise, the seeds in the soil will wait till the gap emerges.The main woody species of MaoLan Karst Forest adopt one of the four countermeasures,or both at the same time.展开更多
文摘Data collected on a free ranging group of Tana River mangabeys (Cercocebus galeritus) indicates that this endangered primate species, which has previously been regarded as a seed predator, plays an important role in seed dispersal and do contribute to the regeneration of a highly fragmented gallery forest. We observed fruit handling behavior and the post-dispersal fate of seeds ingested by the mangabeys. The two main fruit handling behaviors observed, fruit swallowing and processing fruits in cheek pouches, positively contributed to seed disper- sal. Seed predation was not common during this study, apart from a few particular plant species such as Acacia robusta and Alangium salviifolium with non-fleshy fruits. We found a correlation between seed predation and fruit availability, respectively seasonal differential specific dispersal efficiency. The role of the mangabeys in dispersing seeds and facilitating forest regeneration is enhanced by their movement across forest patches through non-forested matrix, which contributes to the deposition of seeds and regeneration in these habitat gaps.
文摘There are four reproductive and regenerative countermeasures of the main woody species in MaoLan Karst Forest.(1)The seed has shorter life span.The ripe seeds germinate rapidly to form seedling when it has fallen into the soil. The seedlings grow slowly to wait till the gap emerges.The seedlings grow rapidly and join in the present population as soon as the gap emerges.(2)The seed has shorter life span.The ripe seeds germinate rapidly to form seedling when it has fallen into the soil.If there are gaps in the forest the seedling grow rapidly and join in the present population,the seedlings will die speedly.(3)The seed has shorter life span.If there are gaps in the forest,the ripe seeds germinate when it has fallen into the soil and grow rapidly to join in the present population,otherwise,the seeds will lose their germination ability.(4)The seed has longer life span.If there are gaps in the forest,the ripe seeds germinate when it has fallen into the soil and grow rapidly to join in the present population,otherwise, the seeds in the soil will wait till the gap emerges.The main woody species of MaoLan Karst Forest adopt one of the four countermeasures,or both at the same time.
