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Ecosistemas
Article . 2015
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Efectividad cualitativa del ganado caprino en la dispersión de especies de frutos secos y carnosos

Authors: Mancilla Leytón, Juan Manuel; Fernández Ales, Rocío; Martín Vicente, Ángel;

Efectividad cualitativa del ganado caprino en la dispersión de especies de frutos secos y carnosos

Abstract

[ES] mediterráneo: Cistus salviifolius, C. libanotis, Halimum halimifolium H. calycinum, Myrtus communis, Phillyrea angustifolia, Pistacia lentiscus y Rhamnus lycioides. Frutos de estas especies fueron ofrecidos a seis cabras estabuladas individualmente. Tras la ingestión, se procedió a recoger las heces a intervalos de 24 horas. En las heces recuperadas, se determinó el porcentaje de pérdida de semillas (masticación y digestión), distribución de la recuperación de las semillas en el tiempo y la eficacia germinativa tras el paso por el tracto digestivo. Menos del 30% de las semillas ingeridas fueron recuperadas, con diferencias significativas entre las especies. C. salviifolius presentó el mayor porcentaje de recuperación (casi 30%) y P. lentiscus el menor (0%). Esta tasa de recuperación estuvo significativamente relacionada positivamente con la dureza de las semillas. En la mayoría de las especies, la máxima tasa de recuperación se dio entre las 24-72 horas tras la ingestión. El paso por el intestino de las cabras aumentó significativamente la germinación de C. salviifolius, H. halimifolium, H. calycinum y P. angustifolia. Los resultados de este estudio pusieron de manifiesto que el ganado caprino puede favorecer la dispersión de la mayoría de las semillas de especies cistáceas estudiadas e inhibir la dispersión de semillas de frutos carnosos. El conocimiento de los mecanismos de dispersión por ungulados generalistas son aspectos importantes a tener en cuenta en los planes de gestión, restauración y conservación de los ecosistemas Mediterráneos

[EN] We evaluated the role of domestic goats as seed dispersers of eight representative Mediterranean shrub species (Cistus salviifolius, C. libanotis, Halimum halimifolium, H. calycinum, Myrtus communis, Phillyrea angustifolia, Pistacia lentiscus and Rhamnus lycioides). Six female goats of similar size and age were fed with fruits of study species. Following fruits ingestion by goats, total faeces were collected at 24-h intervals. The seeds retrieved were tested for germination and viability, along with seeds not eaten by the goats. Less than 30% of the seeds eaten were retrieved from the dung, with significant differences between species. C. salviifolius showing the maximum recovery percentage (30%), and P. lentiscus the minimum (0%). Seed recovery was significantly related to seed hardness. In most species, the maximum amount of seeds recovered occurred 24-72 h after ingestion. The passage through the goat gut significantly increased seed germination in C. salviifolius, H. halimifolium, H. calycinum and P. angustifolia. The results of this study show that goats can potentially favour (Cistaceae) or inhibit (fleshy fruits) seed dispersal of browsed Mediterranean shrub species. Therefore, these results should be considered when developing conservation and restoration plans of natural vegetation in Mediterranean areas

Peer reviewed

Country
Spain
Keywords

Environmental sciences, cistáceas, endozoochorous, GE1-350, Germination, Cistaceae, Fleshy fruits, Doñana, dispersión, germinación, Endozoochorous

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
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