Browsing SDZWA Research Publications by Subject "LEMURS"
Now showing items 1-4 of 4
Long-term lemur research at Centre Valbio, Ranomafana National Park, MadagascarWe present findings from 25 years of studying 13 species of sympatric primates at Ranomafana National Park, Madagascar. Long-term studies have revealed that lemur demography at Ranomafana is impacted by climate change, predation from raptors, carnivores, and snakes, as well as habitat disturbance....
Rusty-gray lesser bamboo lemur (Hapalemur meridionalis). The IUCN Red List of Threatened Species.There is a suspected population reduction of >=30% in this species over a three generation period. Causes of this reduction (which have not ceased) include continuing decline in area, extent and quality of habitat, and exploitation through hunting. Between 1999-2005 habitat loss in the Tsitongambarika Protected Area has been 1.74% per year (Andriamasimanana 2008). A population reduction of ?30% is also suspected to be met in the next 27 years (over a three generation time period) due to the same causes. These causes have not ceased, and will to a large extent not be easily reversible. Of note, it has been estimated that there will be a 21% reduction in the species' range from 2000 to 2080 due to climate change alone (Brown and Yoder 2015). Based on these premises, the species is listed as Vulnerable....
Semi-quantitative tests of cyanide in foods and excreta of three Hapalemur species in MadagascarThree sympatric Hapalemur species (H. g. griseus, H. aureus, and H. (Prolemur) simus) in Ranomafana National Park, Madagascar are known to eat bamboo food parts that contain cyanide…. In this study, we tested for the presence/absence of cyanide in bamboo lemur foods and excreta to (1) document patterns of cyanide consumption among species with respect to diet, (2) identify routes of elimination of cyanide from the gastrointestinal tract, and (3) determine whether cyanide is absorbed from the diet….
Urgent action needed: The forgotten forests of the Lavasoa-Ambatotsirongorongo Mountains, southeast MadagascarWhen we think of important areas of biodiversity within Madagascar, we tend to focus on the more well-known na-tional parks and special reserves. The truth is, however, that there are many small fragments scattered across this island that hold a significant wealth of biodiversity that are in criti-cal need of attention and immediate conservation actions. One such system is a group of six small forest fragments within the Lavasoa-Ambatotsirongorongo mountains in the extreme southeast of Madagascar. From east to west, these include Ambatotsirongorongo, Bemanasa, and Grand Lava-soa (Fig. 1). This last fragment is further divided into four fragments that are all in relatively close proximity....