Mammalian and avian community response to African elephant ( <i>Loxodonta africana</i> ) habitat disturbance in south-eastern Kenya

African elephants (<i>Loxodonta africana</i>) play a significant role in the modification of their habitat, foremost by decreasing woody vegetation cover and density. Little is known regarding the effects of elephant habitat disturbance (EHD) on medium-to-large mammal and bird communities. While the intermediate disturbance hypothesis (IDH) predicts species richness and diversity will be maximised in areas of moderate EHD, high levels of EHD could result in habitat degradation and negatively impact certain wildlife communities. To examine this relationship, we compared mammal and avian community assemblages, richness, and diversity across differing severities (low, medium, high) of elephant disturbed habitats (woodland, shrubland, and mixed wood/shrubland) within Rukinga Wildlife Sanctuary (RWS) in south-eastern Kenya. From June–November 2022, we collected wildlife detection data via driving transects and surveyed EHD through observation of elephant tree damage. While EHD level did impact community assemblage, possibly through vegetation modification and/or increased habitat heterogeneity, EHD had no negative impacts on species richness and diversity in the three habitat types. In contrast to our IDH prediction, richness and diversity were highest in high EHD areas within shrubland habitat and showed no difference across EHD levels for the other two habitats. Overall, this study provides evidence that elephants in RWS are not disturbing habitats to an extent that negatively impacts sanctuary viability, and at least for shrub habitat appear to enhance it. Additionally, smaller wildlife habitats may be able to mitigate lasting elephant overpopulation damages through increased connectivity to other protected areas.

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Publication Details

Journal
African Zoology
Published
2024-08-25
DOI
https://doi.org/10.1080/15627020.2024.2379378
Citations
2
Primary Topic
Wildlife Ecology and Conservation
Type
article
Field-Weighted Citation Impact
0.92

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article

Mammalian and avian community response to African elephant ( Loxodonta africana ) habitat disturbance in south-eastern Kenya

Bruce A. Schulte, Dakota Vaccaro
2 citations
African Zoology
Wildlife Ecology and Conservation
0.92
article

Mammalian and avian community response to African elephant ( Loxodonta africana ) habitat disturbance in south-eastern Kenya

Bruce A. Schulte, Dakota Vaccaro
article en
2 citations

Abstract

African elephants (<i>Loxodonta africana</i>) play a significant role in the modification of their habitat, foremost by decreasing woody vegetation cover and density. Little is known regarding the effects of elephant habitat disturbance (EHD) on medium-to-large mammal and bird communities. While the intermediate disturbance hypothesis (IDH) predicts species richness and diversity will be maximised in areas of moderate EHD, high levels of EHD could result in habitat degradation and negatively impact certain wildlife communities. To examine this relationship, we compared mammal and avian community assemblages, richness, and diversity across differing severities (low, medium, high) of elephant disturbed habitats (woodland, shrubland, and mixed wood/shrubland) within Rukinga Wildlife Sanctuary (RWS) in south-eastern Kenya. From June–November 2022, we collected wildlife detection data via driving transects and surveyed EHD through observation of elephant tree damage. While EHD level did impact community assemblage, possibly through vegetation modification and/or increased habitat heterogeneity, EHD had no negative impacts on species richness and diversity in the three habitat types. In contrast to our IDH prediction, richness and diversity were highest in high EHD areas within shrubland habitat and showed no difference across EHD levels for the other two habitats. Overall, this study provides evidence that elephants in RWS are not disturbing habitats to an extent that negatively impacts sanctuary viability, and at least for shrub habitat appear to enhance it. Additionally, smaller wildlife habitats may be able to mitigate lasting elephant overpopulation damages through increased connectivity to other protected areas.

African ZoologyVol. 59(3-4)
Western Kentucky University (US)
Raptor Research Foundation, Western Kentucky University, Animal Behavior Society, American Society of Mammalogists
Life in Land
Openalex Percentile: Top 23%
Wildlife Ecology and Conservation
0.92
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