Onager of roads, railway lines, and fences required to support mining activities. The Asiatic wild ass is vulnerable to diseases, as well. A disease known as the "South African horse sickness" caused a major decline to the Indian wild ass population in the 1960s. However, the subspecies is no longer under threat to such disease and is continuously increasing in number. Various breeding programs have been started for the onager subspecies in captivity and in the wild, which increases their numbers to save the endangered species. The species is legally protected in many of the countries in which it occurs. The
History of Marine Animal Populations in some cases, cannot know about these changes. Only the interdisciplinary combination of expertise can fully develop the scope of what is known, unknown and unknowable about the environmental history of the oceans. The findings of the HMAP research effort are disseminated in the following forms:<br> Research Datasets: the HMAP Data Pages (at Hull University) is an open access facility that currently holds approximately 750,000 records drawn from historical archives relating to the case studies listed above. History of Marine Animal Populations The History of Marine Animal Populations (HMAP) is an international, interdisciplinary research initiative. It comprises the historical component