Elephant Corridors Research Articles

The Nilgiris Biosphere Reserve: An Unrealized Vision for Conservation

The Man and Biosphere Program of UNESCO (MAB) was a pioneer in recognizing the role of local communities in the conservation of biodiversity. Biosphere reserves of MAB were designed with a core zone with maximum protection, a buffer zone with regulated activities, and a transition zone outside the reserve proper. The transition zone is where experimental management options to promote sustainable development could be developed, and could add value to the conservation network and to regional activities. The Nilgiris Biosphere Reserve (NBR), with a core zone of 1,240 km2 and a buffer zone of 4,280 km2, was created in 1986 without a transition zone. The absence of a transition zone separates the protected areas (PAs) from each other, and the hard boundary between the PA and surrounding areas promotes human-wildlife conflict and encourages development inimical to the mandate of the Biosphere Reserve, ultimately affecting the regional economy through progressive degradation of the environment. We examine three case studies to illustrate these concerns: the implementation of the India-based Neutrino Observatory, resistance by tourist resorts against regulations for connecting elephant corridors, and whether the goals of local tourism operators meet the conservation objectives of the NBR. Landscape ecology and econometry can help design a transition zone on a sound economic basis. A better environment management is within technical and financial reach. But is it within political reach?

Selous Game Reserve Indian Ocean elephant corridors: A perspective from Kilwa District

Selous Game Reserve Indian Ocean elephant corridors: A perspective from Kilwa District

Interactions between protected areas and their surroundings in human-dominated tropical landscapes

Protected areas (PAs) often depend on landscapes surrounding them to maintain flows of organisms, water, nutrients, and energy. Park managers have little authority over the surrounding landscape although land use change and infrastructure development can have major impacts on the integrity of a PA. The need for scientifically-based regional-scale land use planning around protected areas is acute in human-dominated landscapes to balance conservation goals with livelihood needs for fuelwood, fodder, and other ecosystem services. As a first step, we propose the designation of a “zone of interaction” (ZOI) around PAs that encompasses hydrologic, ecological, and socioeconomic interactions between a PA and the surrounding landscape. We illustrate the concept by delineating the ZOI in three Indian PAs – Kanha, Ranthambore, and Nagarahole – using remote sensing, population census, and field data. The ZOI in Ranthambore is three times the size of the park and is largely defined by the socioeconomic interactions with surrounding villages. Ranthambore is located in headwaters and wildlife corridors are largely severed. In Nagarahole, the ZOI is more than seven times larger than the park and includes upstream watershed and elephant corridors. Kanha’s ZOI is approximately four times larger than the park and is mostly defined by contiguous surrounding forest. The three examples highlight the differing extents of ZOIs when applying equivalent criteria, even though all are located in densely-populated landscapes. Quantitative understanding of which activities (e.g. collection of forest products, grazing, road construction, tourism development) and which locations within the ZOI are most crucial to conservation goals will enable improved land use planning around PAs in human-dominated landscapes.

Assessment of livestock grazing pressure in and around the elephant corridors in Mudumalai Wildlife Sanctuary, south India.

Mudumalai Wildlife Sanctuary in southern India plays an important role in biodiversity conservation, especially of large mammals, by offering habitat contiguity of about 3300 km2 with three other protected areas in the region, namely Nagarahole and Bandipur National Parks and Wynaad Wildlife Sanctuary through forest corridors between the Western Ghats and Eastern Ghats forests. The habitat linkage is crucial for large ranging animals such as elephants, which use these forest corridors for migration. Livestock grazing, a major biotic interference in forest corridors, originates from seven settlements of the Masinagudi group of villages on the eastern and the southeastern fringes of the sanctuary. Construction of a series of hydroelectric power stations, numbering about three at Singara, Marvakandy (Masinagudi) and Moyar, around the Masinagudi villages caused a rapid growth in human population (143% between 1961 and 1991), particularly the landless labourers and livestock. Free grazing by about 15 000–17 000 resident as well as migratory livestock every year in and around the forest corridors, coupled with removal of cattle dung from the forest floor, have adversely affected the forest regeneration and helped proliferation of weed species such as Lantana camara, Casia tora, C. occidentalis, Opuntia dillenii, and Ageratum conyzoides. The annual fodder production from the corridor forest could meet the demand of about two-thirds of the resident population, while the crop residues from the marginal agriculture could not support the remaining one-third livestock population. In view of such a situation, measures have been suggested to reduce livestock population and implement the ecodevelopment packages in order to ensure the corridor connectivity for the long-term conservation of the elephant population.

Elephant corridors in India: lessons for other elephant range countries

AbstractThe conservation status of five elephant corridors in different regions of India is discussed. Elephants have not used the 13-km-wide corridor between Ariankavu and Thenmalai, in the southern portion of the Western Ghats for several decades because a rail track and road, both of which are bordered by human habitations, cross it. The future of the Chilla–Motichur and Rajaji–Corbett corridors, which hold the Rajaji–Corbett elephant population in north-west India as one entity, is bleak. It is still possible for elephants to use the Kallar–Jaccanari corridor linking the 4000-strong elephant population of northern and southern Nilgiri Biosphere Reserve in southern India. It may be possible to save the Siju–Rewak corridor, which connects the elephant populations on either side of the River Simsang in north-east India. The authors suggest that other Asian countries that have elephant populations and that are capable of establishing large conservation units, should have master plans that should detail possible developmental activities around existing wildlife habitats. Establishing vast protected areas for large mammals, however, would need political will and regular communication among the nations' development planners, wildlife managers and researchers.

Elephant corridors in India: lessons for other elephant range countries

The conservation status of five elephant corridors in different regions of India is discussed. Elephants have not used the 13-km-wide corridor between Ariankavu and Thenmalai, in the southern portion of the Western Ghats for several decades because a rail track and road, both of which are bordered by human habitations, cross it. The future of the Chilla–Motichur and Rajaji–Corbett corridors, which hold the Rajaji–Corbett elephant population in north-west India as one entity, is bleak. It is still possible for elephants to use the Kallar–Jaccanari corridor linking the 4000-strong elephant population of northern and southern Nilgiri Biosphere Reserve in southern India. It may be possible to save the Siju–Rewak corridor, which connects the elephant populations on either side of the River Simsang in north-east India. The authors suggest that other Asian countries that have elephant populations and that are capable of establishing large conservation units, should have master plans that should detail possible developmental activities around existing wildlife habitats. Establishing vast protected areas for large mammals, however, would need political will and regular communication among the nations' development planners, wildlife managers and researchers.