NEW FULL PAPER AVAILABLE: Human footprint and protected areas shape elephant range across Africa

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Fri, Apr 2, 2021 8:00 PM

Human footprint and protected areas shape elephant range across AfricaJake
Wall, George Wittemyer, Brian Klinkenberg, Fiona Maisels, Jelle Ferwerda &
Iain Douglas-HamiltonCurrent BiologyApril 1, 2021Summary

Over the last two millennia, and at an accelerating pace, the African
elephant (Loxodonta spp. Lin.) has been threatened by human activities
across its range. We investigate the correlates of elephant home range
sizes across diverse biomes. Annual and 16-day elliptical time density home
ranges were calculated by using GPS tracking data collected from 229
African savannah and forest elephants (L. africana and L. cyclotis,
respectively) between 1998 and 2013 at 19 sites representing bushveld,
savannah, Sahel, and forest biomes. Our analysis considered the
relationship between home range area and sex, species, vegetation
productivity, tree cover, surface temperature, rainfall, water, slope,
aggregate human influence, and protected area use. Irrespective of these
environmental conditions, long-term annual ranges were overwhelmingly
affected by human influence and protected area use. Only over shorter,
16-day periods did environmental factors, particularly water availability
and vegetation productivity, become important in explaining space use. Our
work highlights the degree to which the human footprint and existing
protected areas now constrain the distribution of the world’s largest
terrestrial mammal. A habitat suitability model, created by evaluating
every square kilometer of Africa, predicts that 18,169,219 km2 would be
suitable as elephant habitat—62% of the continent. The current elephant
distribution covers just 17% of this potential range of which 57.4% falls
outside protected areas. To stem the continued extirpation and to secure
the elephants’ future, effective and expanded protected areas and improved
capacity for coexistence across unprotected range are essential.

FULL PAPER PDF
LINKhttps://drive.google.com/file/d/1lNYRWkTb37eKSuayvh_EoEijtzW51_2n/view?usp=sharing
https://drive.google.com/file/d/1lNYRWkTb37eKSuayvh_EoEijtzW51_2n/view?usp=sharing

FULL PAPER WEB
LINK:https://www.cell.com/current-biology/fulltext/S0960-9822(21)00381-X?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS096098222100381X%3Fshowall%3Dtrue
https://www.cell.com/current-biology/fulltext/S0960-9822(21)00381-X?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS096098222100381X%3Fshowall%3Dtrue

*Human footprint and protected areas shape elephant range across AfricaJake Wall, George Wittemyer, Brian Klinkenberg, Fiona Maisels, Jelle Ferwerda & Iain Douglas-HamiltonCurrent BiologyApril 1, 2021Summary* Over the last two millennia, and at an accelerating pace, the African elephant (Loxodonta spp. Lin.) has been threatened by human activities across its range. We investigate the correlates of elephant home range sizes across diverse biomes. Annual and 16-day elliptical time density home ranges were calculated by using GPS tracking data collected from 229 African savannah and forest elephants (L. africana and L. cyclotis, respectively) between 1998 and 2013 at 19 sites representing bushveld, savannah, Sahel, and forest biomes. Our analysis considered the relationship between home range area and sex, species, vegetation productivity, tree cover, surface temperature, rainfall, water, slope, aggregate human influence, and protected area use. Irrespective of these environmental conditions, long-term annual ranges were overwhelmingly affected by human influence and protected area use. Only over shorter, 16-day periods did environmental factors, particularly water availability and vegetation productivity, become important in explaining space use. Our work highlights the degree to which the human footprint and existing protected areas now constrain the distribution of the world’s largest terrestrial mammal. A habitat suitability model, created by evaluating every square kilometer of Africa, predicts that 18,169,219 km2 would be suitable as elephant habitat—62% of the continent. The current elephant distribution covers just 17% of this potential range of which 57.4% falls outside protected areas. To stem the continued extirpation and to secure the elephants’ future, effective and expanded protected areas and improved capacity for coexistence across unprotected range are essential. *FULL PAPER PDF LINKhttps://drive.google.com/file/d/1lNYRWkTb37eKSuayvh_EoEijtzW51_2n/view?usp=sharing <https://drive.google.com/file/d/1lNYRWkTb37eKSuayvh_EoEijtzW51_2n/view?usp=sharing>* *FULL PAPER WEB LINK:https://www.cell.com/current-biology/fulltext/S0960-9822(21)00381-X?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS096098222100381X%3Fshowall%3Dtrue <https://www.cell.com/current-biology/fulltext/S0960-9822(21)00381-X?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS096098222100381X%3Fshowall%3Dtrue>*