Bangladesh suffered widespread damage as a result of Cyclone Amphan. Yet the Sundarbans mangrove forest acted as a natural barrier protecting the country from further destruction, as it has done countless times before.
Large mammals are essential for rainforest regeneration
Secondo un nuovo studio senza la dispersione dei semi effettuata da questi animali le foreste non sopravvivrebbero.
Almost two third of South-east Asian rainforests have been degraded by deforestation, agriculture, and human-related activities, whilst wildlife has been decimated by hunting and meat trade. Actually, forests can naturally restore their ancient beauty, but they need large wild animals, since they are able to disperse plants and trees’ seeds in vast areas.
This is what has revealed a new study, published by Tropical Conservation Science, which examined the importance of large mammals, such as primates, tapirs, deer, civets, and wild boars, in despersing large seeds in the Harapan rainforest, Sumatra. Despite this area, 98,555 hectares of rainforest characterised by extraordinary biodiversity, has been significantly affected by deforestation and intensive oil palm agriculture, researchers say that particular animal species allowed its partial regeneration.
Scientists have installed 148 camera traps in order to monitor mammals in the forest and better understand the process of seed dispersal. The study shows that several species are inclined to ingest whole seeds rather than chew them. Moreover, they travel long distances and consume a wide variety of seeds.
The study revealed that the most common species of seed dispersers were the pig-tailed macaque (Macaca nemestrina), red muntjac (Muntiacus muntjak), Eurasian wild pig (Sus scrofa), lesser mouse deer (Tragulus kanchil), Malayan tapir (Tapirus indicus), and all species of civet. Sun bears (Helarctos malayanus) and Malayan Tapirs (Tapirus indicus) were recorded at around a third of locations.
Only ten camera trap locations lacked any record of potential dispersers. “The most striking result from our survey of terrestrial mammalian seed dispersers in a degraded lowland forest in Sumatra is that can be regarded as resilient to degradation,” the study reads.
This extraordinary ability of large mammals to fix human-linked damages represents a reason more to protect biodiversity, through establishing protected areas and regulating hunting and meat trade.
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