Seedling Distribution and Genetic Diversity of Rubroshorea acuminata, Shorea guiso, and Rubroshorea leprosula in the Harapan Rainforest: A Crucial Study for Conservation Efforts
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dipterocarps, genetic diversity, Harapan Rainforest, microsatellite, seedling distribution
Abstract
The genera Rubroshorea and Shorea are ecologically and commercially important timber species in Indonesia. Genetic diversity is vital for ensuring the long-term stability of the forest ecosystems where these species thrive. Furthermore, genetic diversity is linked to the flowering system and seed dispersal methods, which play a crucial role in determining population dynamics. However, studies on genetic diversity and seed dispersal in these genera in Indonesia remain limited. This study mapped the seedling distribution of Rubroshorea acuminata, Shorea guiso, and Rubroshorea leprosula in the Harapan Rainforest. It also assessed the genetic diversity and genetic structure of the three species using ten microsatellite markers. The results showed that the three species used the gyration method for seed dispersal, which helps explain the decline in seedling density with increasing distance from the putative mother tree. Among these species, R. leprosula exhibited the highest seedling density and slightly greater genetic diversity than the others. The genetic relationship analysis revealed that R. leprosula and R. acuminata were closely related and formed a separate group from S. guiso. The study’s findings provide valuable insights into seed dispersal methods and genetic diversity, which can aid in developing conservation management strategies for the three dipterocarp species.
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References
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