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New database unveils the role of Asian hornbills as forest seed dispersers

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Biologists have long known hornbills are supreme long-distance seed dispersers. The iconic forest birds are capable of transporting tree seeds over vast distances — up to 10 kilometers, or 6 miles, for some species. In so doing, they distribute tree populations across increasingly fragmented tropical forest landscapes. But actually observing hornbill seed dispersal behavior in the wild is notoriously difficult. “If you’re collecting data in the field, it’s very hard to observe hornbills interacting with plants, not to mention finding out where the bird flies to when it leaves the fruiting tree,” Hanci Liang, a doctoral candidate at the National University of Singapore (NUS), told Mongabay. While a lot is known about the eating habits of hornbills, many mysteries still remain. To pinpoint where such observational data is needed most, Liang and her colleagues from Singapore and Malaysia have brought together all existing research data on the fruit-eating habits of Asian and New Guinean hornbill species into an open-source digital database. Published in a new study in Global Ecology and Conservation, the database represents the largest continually updatable repository of hornbill frugivory and seed dispersal research in the region. The team says it hopes the resource will enable hornbill specialists and prospective students to quickly identify where information is lacking so that they can target their efforts and limited resources to fill knowledge gaps. Understanding the dynamics of seed dispersal enables biologists to investigate the role of different types of fruit-eating animals within ecosystems. And for tropical trees, long-distance seed…This article was originally published on Mongabay

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