Data from: Distributions of mammals in Southeast Asia: the role of the legacy of climate and species body mass
Published Aug 20, 2019 on Dryad.
Cite this dataset
Radchuk, Viktoriia; Kramer-Schadt, Stephanie; Fickel, Joerns; Wilting, Andreas (2019). Data from: Distributions of mammals in Southeast Asia: the role of the legacy of climate and species body mass [Dataset]. Dryad. https://doi.org/10.5061/dryad.qp44619
Aim: Current species distributions are shaped by present and past biotic and abiotic factors. Here we assessed whether abiotic factors (habitat availability) in combination with past connectivity and a biotic factor (body mass) can explain the unique distribution pattern of Southeast Asian mammals, which are separated by the enigmatic biogeographic transition zone, the Isthmus of Kra (IoK), for which no strong geophysical barrier exists. Location: Southeast Asia Taxon: Mammals Methods: We projected habitat suitability for 125 mammal species using climate data for the present period and for two historic periods: mid-Holocene (6 kya) and last glacial maximum (LGM 21 kya). Next, we employed a phylogenetic linear model to assess how present species distributions were affected by the suitability of areas in these different periods, habitat connectivity during LGM and species body mass. Results: Our results show that cooler climate during LGM provided suitable habitat south of IoK for species presently distributed north of IoK (in mainland Indochina). However, the potentially suitable habitat for these Indochinese species did not stretch very far southwards onto the exposed Sunda Shelf. Instead, we found that the emerged landmasses connecting Borneo and Sumatra provided suitable habitat for forest dependent Sundaic species. We show that for species whose current distribution ranges are mainly located in Indochina, the area of the distribution range that is located south of IoK is explained by the suitability of habitat in the past and present in combination with the species body mass. Main conclusions: We demonstrate that a strong geophysical barrier may not be necessary for maintaining a biogeographic transition zone for mammals, but that instead a combination of abiotic and biotic factors may suffice.
Presence data for 125 mammal species
Mammal species presence data obtained from the IUCN Red List of Threatened Species as explained in detail in the main text. For more details on the file contents please see Readme file.
Background data for 125 species
Three background samples for each of the 125 mammal species, obtained as explained in the main text. For details on the file contents please see Readme file.