Short Communication |
Corresponding author: Antonia Nyamukuru ( nyamukuru@gmail.com ) Academic editor: Samual Williams
© 2019 Antonia Nyamukuru.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Nyamukuru A (2019) Wild mammal dung abundance in Lake Mburo National Park is lower than in adjacent ranchlands. Nature Conservation 37: 123-131. https://doi.org/10.3897/natureconservation.37.35814
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The establishment of livestock ranchlands adjacent to protected areas in savanna ecosystems is believed to threaten wild animals. Intensive competition for vegetative resources, water and poaching are considered to be immediate factors that reduce the capacity of protected areas to sustain wild mammals. The coexistence of wild mammals and ranchlands is common in Southern Africa but has rarely been suggested as a viable conservation option in East Africa. To assess the importance of ranchlands in conserving wild mammals, 36 plots of 20 × 20 m dimension were positioned along a 7240 m stretch from the boundary in Lake Mburo National Park (LMNP) and 36 plots of similar dimension were set within the ranchlands adjacent to the Park. The dung counts of different species recorded in the plots were used as a relative index of mammal abundance in the ranchlands and in LMNP. The results reveal 18 wild mammal species recorded in both sampled areas, 12 within LMNP and 17 in the adjacent ranchlands. The topi Damaliscus lunatus was only found in the park. Total dung count estimated in both ranchlands and LMNP was 2,586 with LMNP accounting for 29% and ranchlands 71%. In terms of wild mammal dung, ranchlands had a higher wild mammal dung count than LMNP (30% higher). The study points to the compatibility of the two land uses in conserving wild mammals and biodiversity in general, negating the common belief of competition and exclusion. Future research is needed on the compatibility of ranchlands with protected areas on biodiversity status of other species.
abundance, cattle, land use, livestock, protected area, ranches, savanna, Uganda, wild mammals
The assumption that biodiversity is higher in protected areas than in other land uses has dominated biodiversity conservation discourse (
Lake Mburo National Park (LMNP), the smallest grassland protected area (260 km2) in Uganda located within a dryland savanna, is surrounded by livestock ranchlands (
The study was conducted in the eastern part of LNMP and the adjacent ranchlands, in Kiruhura District, South Western Uganda. The park lies at an altitude of about 1200 m above sea level, average annual rainfall of 888 mm and mean annual temperatures of 22.9 °C are recorded at the nearest weather station in Mbarara (
I systematically paired sites in LMNP and the adjacent ranchlands running parallel to the boundary across the two land uses between June and September 2015. The boundary between LMNP and the ranchlands is unfenced and demarcated with concrete pillars. The herbaceous vegetation on either side of the boundary is different but the woody vegetation is similar (
Results from the study reveal the presence and distribution of wild mammals within the two land uses. In total, 18 wild mammals were found to range within the sampled corridor, with ranchlands recording more (17) wild mammal species than LMNP (Table
The dung counts of wild mammals and livestock recorded in Lake Mburo National Park and the adjacent ranchlands.
English name | Zoological name | Lake Mburo National Park | Ranchlands |
---|---|---|---|
Dung counts | |||
Wild mammals | |||
Zebra | Equus quagga boehmi | 266 | 538 |
Buffalo | Syncerus caffer | 163 | 6 |
Warthog | Phacochoerus africanus | 68 | 28 |
Impala | Aepyceros melampus | 66 | 466 |
Eland | Taurotragus oryx | 31 | 82 |
Baboon | Papio anubis | 12 | 9 |
Topi | Damaliscus lunatus | 8 | – |
Waterbuck | Kobus ellipsiprymnus | 6 | 10 |
Hippopotamus | Hippopotamus amphibius | 5 | 3 |
Bush pig | Potamochoerus larvatus | 2 | 2 |
African hare | Lepus victoriae | 1 | 7 |
Bushbuck | Tragelaphus scriptus | – | 3 |
Bush duiker | Sylvicapra grimmia | – | 12 |
Monkey | Cercopithecus aethiops | 1 | 3 |
Hare | Lepus spp | – | 6 |
Mongoose | Helogale spp. | – | 4 |
Dwarf mongoose | Helogale parvula | – | 2 |
Hyaena | Crocuta crocuta | – | 2 |
Total | 629 | 1,183 | |
Livestock | |||
Ankole cattle | Bos taurus | 122 | 619 |
Horse | Equus caballus | 1 | 23 |
Goat | Capra hircus | – | 9 |
Total | 123 | 651 |
Results of the survey indicate that contrary to received conventional wisdom (
The coexistence of wild mammals and livestock in rangelands as demonstrated by studies conducted in such lands (
Notwithstanding studies that suggest greater competition and conflict between wildlife and other land uses (
I thank the ranchers and Uganda Wildlife Authority for granting me permission to access the ranchlands and LMNP. Fred Matovu supported in data collection. Norwegian Programme for Capacity Building in Higher Education and Research for Development (NORHED) under the NORAD programme funded this research (UGA-13/0019). I am grateful for useful comments from anonymous reviewers.