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Home NEWS Science News Biology

South African wildlife management/conservation models do not protect carnivores equally

Bioengineer by Bioengineer
August 27, 2020
in Biology
Reading Time: 3 mins read
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UMass Amherst population ecologist contributed statistical expertise to wildlife study

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Credit: Gonçalo Curveira-Santos

AMHERST, Mass. – In results released this week, an international team of wildlife ecologists reports that the trend toward more reliance on private game farms and reserves to manage and conserve free-ranging carnivores in South Africa is more complicated than it appears – “a mosaic” of unequal protection across different land management types.

Chris Sutherland at the University of Massachusetts Amherst, with first author and doctoral student Gonçalo Curveira-Santos of the Centre for Ecology, Evolution and Environmental Changes at the University of Lisbon, used a large network of camera traps to study occupancy of free-ranging carnivore species including leopards, hyenas, jackals and mongooses in different habitats and levels of protection in northeast South Africa.

Curveira-Santos says, “Widespread conversion of agricultural and livestock areas for commercial wildlife industry, ecotourism and hunting is a major component of conservation in South Africa. Management initiatives and conservation outcomes are typically focused on the large charismatic species like lions or cheetahs, but we know very little about how unmanaged, free-ranging carnivores respond to landscapes defined by varying management and conservation models.”

He adds, “Our results support the notion that the private reserves or game ranches play a complementary role to formal protected areas, but that it’s also important to recognize they do not play the same role, and may not be a conservation panacea. For governments, it’s attractive to move conservation to the private sector, but for us to assess the conservation benefits of doing so, we need some benchmarks, and protected areas under long-term formal protection are important references to a “natural state.”

Writing in the Journal of Applied Ecology, the researchers explain how they conducted a survey to explore the relative conservation role of the private and formal protected areas for South African free-ranging carnivores.

With reserve rangers and staff, Curveira-Santos established a camera trap network to survey a natural quasi-experimental setting in northern KwaZulu-Natal, South Africa. The area offers a “protection gradient” from a provincial protected area, the 108-year-old uMkhuze Game Reserve, part of iSimangaliso Wetland Park UNESCO World Heritage Site, to a private ecotourism reserve, Mun-ya-wana Private Game Reserve, to commercial game ranches and traditional communal areas with villages as a disturbance reference.

Sutherland points out that this was “a phenomenal field effort” that used 294 trail cameras for an average 75 days each. The motion-activated cameras generated 7,224 images of 13 free-ranging carnivores from small mongooses to much larger leopards and spotted hyenas. The researchers analyzed multi-species site occupancy data, stratifying by four protection levels, and formally compared community patterns at several scales.

Overall, they found species number and identity was similar in the protected area, private reserve and game ranches and markedly lower in the communal area. However, they observed “important variation in species occupancy rates – as a proxy for abundance – that was mainly driven by the level and nature of protection.”

They say findings provide “support for the added value of multi-tenure conservation estates augmenting and connecting South Africa’s protected areas.” Further, similar carnivore richness between the private reserve and game ranches and higher occupancy compared to communal lands shows that carnivores can thrive in private wildlife areas.

However, for most species, occupancy rates were highest in the formal protected area, Sutherland notes, “but clearly more research is needed to understand what factors may be hindering species recovery to the levels observed in the formal protected area, and importantly, what the ecological consequences of such patterns are.”

Curveira-Santos adds, “Our point is that the formal old protected areas may play a key role that cannot be replicated easily,” especially often-overlooked free-ranging carnivores outside protected areas that seem to respond differently to different management approaches. “In general terms,” he adds, “our work adds to the call for a more holistic perspective of wildlife for effective conservation planning. In the meantime, ensuring the long-term maintenance of formal protected areas is probably our safest bet.”

###

The authors acknowledge co-authors Lourens Swanepoel and Margarida Santos-Reis and thank the iSimangaliso Authority, Ezemveto KZN Wildlife, Mun-ya-wana Conservancy, reserve managers and staff for allowing and assisting with field work. Funding was from South Africa’s National Research Foundation, the African Institute for Conservation Ecology, the National Geographic Society and the Wild Tomorrow Fund.

Media Contact
Janet Lathrop
[email protected]

Original Source

https://www.umass.edu/newsoffice/article/wildlife-management-and-conservation

Related Journal Article

http://dx.doi.org/10.1111/1365-2664.13726

Tags: BiodiversityBiologyEcology/EnvironmentPopulation Biology
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