Long‐term rainfall regression surfaces for the Kruger National Park, South Africa: a spatio‐temporal review of patterns from 1981 to 2015

MacFadyen, Sandra; Zambatis, N.; Teeffelen, A.J.A. van; Hui, Cang

doi:10.1002/joc.5394

Cited by 37 publications

(27 citation statements)

References 63 publications

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“…The transition from dry to wet season typically occurs during late September and October in South Africa, and the year 2005 had slightly more rainfall than the climate average for Kruger National Park (MacFadyen et al . ). The African buffalo movement data we analysed indicates that the individual mostly occupied the northern and western extent of the region during the 2 weeks time period, but travelled c .…”

Section: Resultsmentioning

confidence: 97%

Running on empty: recharge dynamics from animal movement data

2018

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Vital rates such as survival and recruitment have always been important in the study of population and community ecology. At the individual level, physiological processes such as energetics are critical in understanding biomechanics and movement ecology and also scale up to influence food webs and trophic cascades. Although vital rates and population‐level characteristics are tied with individual‐level animal movement, most statistical models for telemetry data are not equipped to provide inference about these relationships because they lack the explicit, mechanistic connection to physiological dynamics. We present a framework for modelling telemetry data that explicitly includes an aggregated physiological process associated with decision making and movement in heterogeneous environments. Our framework accommodates a wide range of movement and physiological process specifications. We illustrate a specific model formulation in continuous‐time to provide direct inference about gains and losses associated with physiological processes based on movement. Our approach can also be extended to accommodate auxiliary data when available. We demonstrate our model to infer mountain lion (Puma concolor; in Colorado, USA) and African buffalo (Syncerus caffer; in Kruger National Park, South Africa) recharge dynamics.

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Section: Resultsmentioning

confidence: 97%

Running on empty: recharge dynamics from animal movement data

2018

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“…This region is drier than the areas to the south and west where the other animals were sampled (MacFadyen et al, 2018). Rainfall within the KNP also varies from year-to-year (MacFadyen et al, 2018). This can affect the survival of the free-living stages of parasites, as well as host condition and population size, factors that can determine the susceptibility of individual hosts and the number of hosts available (Horak et al, 2003(Horak et al, , 2011.…”

Section: Discussionmentioning

confidence: 99%

Some gastrointestinal nematodes and ixodid ticks shared by several wildlife species in the Kruger National Park, South Africa

et al. 2021

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“…The decrease in mean flow volumes is apparently a human-driven process, since the decline is not consistent with the climatic conditions of the region (Figures S1 and S2). Rainfall and temperature in the Luvuvhu catchment have remained unchanged over the last 100 years [56]. Other studies in the LRC [20,22] have reported the rate of water abstraction for commercial forestry and agricultural purposes as an immediate concern for the sustainable future of stream flow regimes.…”

Section: Discussionmentioning

confidence: 99%

Challenges to Implementing an Environmental Flow Regime in the Luvuvhu River Catchment, South Africa

Ramulifho

Ndou

Thifhulufhelwi

et al. 2019

IJERPH

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Rivers are now facing increasing pressure and demand to provide water directly for drinking, farming and supporting industries as a result of rapidly growing global human population. Globally, the most common practice for catchment managers is to limit water abstraction and changes to stream flow by setting environmental flow standards that guard and maintain the natural ecosystem characteristics. Since the development of the environmental flow concept and methods in South Africa, very few studies have assessed the institutional constraints towards environmental flow implementation. This study determined stream flow trends over time by fitting simple linear regression model to mean daily stream flow data at three selected stations in the Luvuvhu River Catchment (LRC). We also conducted a literature search to review, firstly the response of aquatic organisms (fish and macroinvertebrate) to changes in habitat conditions and secondly on local challenges affecting the sustainable implementation of environmental flow regime and related water resources management strategies. All the three stream flow stations show decreasing stream flow volume of 1 and 2 orders of magnitude faster in some stations with the possibility that flow will cease in the near future. Qualitative analyses from both local and international literature search found that the main challenges facing the implementation of sustainable flow strategies and management are absence of catchment management agency, lack of understanding of environmental flow benefits, limited financial budget, lack of capacity and conflict of interest. Rivers with changing stream flows tend to lose sensitive species. The development of scientifically credible catchment-wide environmental flow and abstraction thresholds for rivers within the LRC would make a major contribution in minimizing the declining stream flow volumes. Monitoring and reporting should be prioritized to give regular accounts of the state of our rivers.

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Long‐term rainfall regression surfaces for the Kruger National Park, South Africa: a spatio‐temporal review of patterns from 1981 to 2015

Cited by 37 publications

References 63 publications

Running on empty: recharge dynamics from animal movement data

Running on empty: recharge dynamics from animal movement data

Some gastrointestinal nematodes and ixodid ticks shared by several wildlife species in the Kruger National Park, South Africa

Challenges to Implementing an Environmental Flow Regime in the Luvuvhu River Catchment, South Africa

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