The study also found that primate populations closer to human infrastructures are less likely to descend to the ground. Luca Santini, Ph.D., from Sapienza University of Rome, one of the two senior authors of the study, said, “This finding may suggest that human presence, which is often a threat to primates, may interfere with the natural adaptability of the species to global change.” “It’s possible that spending more time on the ground may cushion some primates from the effects of forest degradation and climate change however, for the less-adaptable species, fast and effective conservation strategies will be necessary to ensure their survival,” Eppley said. As climate change worsens and arboreal habitats diminish, the study suggests primates consuming a more generalized diet and living in larger groups may more easily adapt to a terrestrial lifestyle. Many of these species are already burdened with living in warmer, fragmented and heavily disturbed environments that often have fewer available dietary resources.
Furthermore, primates living in hotter environments, and with less canopy cover, were more likely to adapt to these changes by shifting toward more extensive ground use. The authors suggest that these traits act as a potential “pre-adaptation” to terrestriality. The study found that primates that consume less fruit and live in large social groups were more likely to descend to the ground. The authors estimated the influence of ecological drivers, including potential human-induced pressures and/or species-specific traits, on the level of terrestriality (time spent on the ground) in arboreal primates. Eppley, “yet at sites with relatively less disturbance, members of the same species may never descend to the ground.” “This study began with a discussion among colleagues about how we’d noticed certain populations of arboreal primates spending more time on the ground,” said Dr. 10, in the journal The Proceedings of the National Academy of Sciences ( PNAS) ,was led by Timothy Eppley, Ph.D., a postdoctoral associate at San Diego Zoo Wildlife Alliance (SDZWA), and examined more than 150,000 hours of observation data on 15 lemur species and 32 monkey species at 68 sites in the Americas and Madagascar. This study was a remarkable worldwide collaboration, including 118 co-authors from 124 unique institutions. We'll send you the top local news stories every morning at 8 a.m.SAN DIEGO – A large-scale study of 47 species of monkeys and lemurs has found that climate change and deforestation are driving these tree-dwelling animals to the ground, where they are at higher risk due to lack of preferred food and shelter, and may experience more negative interaction with humans and domestic animals. It was entered into the federal Combined DNA Index System database but generated no matches. In 2003, the sheriff’s crime lab obtained a DNA profile from evidence recovered at the scene of the crime.
Kay Holman was found strangled in her Borrego Springs home on March 21, 1994. After a lengthy investigation failed to conclusively identify a suspect, the case went cold. Holman was found strangled in her home in the 700 block of Tilting T Drive on March 21, 1994. Courtesy San Diego County Sheriffĭetectives working a Borrego Springs homicide case that went unsolved for nearly three decades have identified the alleged killer - a man who himself died 15 years ago, authorities announced Monday.Ĭold-case investigators achieved the long-awaited breakthrough in the murder of 72-year-old Claire “Kay” Holman via genetic genealogy, which combines analysis of DNA evidence with the study of family trees, according to the San Diego County Sheriff’s Department.
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