Within savanna environments, movements of elephant are influenced by changes in climate especially seasonal rainfall. In this study, we investigated the possible changes in elephant population based on projected rainfall changes using regional climate models (RCM) and Representative Concentration Pathways (RCPs). The relationship between elephant and rainfall was modelled against annual, wet season, dry season rainfall based on various time lags. Future relation between elephant and rainfall was projected based on three RCPs; 2.6, 4.5 and 8.5. There was a strong linear relationship between elephant and October-November-December (OND) rains with time lag of 13 years (Y = −4016.43 + 19.11x, r2 = 0.459, P = 0.006). The rainfall trends for RCP 2.6 and 4.5 showed a slight increase in annual rainfall for the period 2006-2100 but driven by OND increases. Rainfall increase for RCP 8.5 was significant and was driven by increase in both March-April-May (MAM) and OND. These rainfall dynamics had influence on the projected elephant population in the Amboseli ecosystem. For RCP 2.6 and 4.5 the elephant population increase was 2455 and 2814 respectively. RCP 8.5 elephant population doubled to an average of 3348 elephants. In all the RCPs there are seasonal and yearly variations and absolute number varies from the average. The range of variation is small in RCPs 2.6 and 4.5 compared to RCP 8.5. Evidently, elephant population will increase based on projected rainfall projections surpassing park capacity. It therefore, requires that the Park authority put in place measures that could contain these numbers including opening of blocked wildlife corridors, maintain the cross border movement of Amboseli elephant with Tanzania in that case ensure there is no poaching. Lastly, work with local communities so that they can benefit from tourism through setting up conservancies through which they could minimize the human elephant conflicts based on the projected elephant population.
References
[1]
Aduma, M.M., Ouma, G., Said, M.Y., et al. (2018) Potential Impacts of Temperature Projections on Selected Large Herbivores in Savanna Ecosystem of Kenya. American Journal of Climate Change, 7, 5-26. https://doi.org/10.4236/ajcc.2018.71003
[2]
Parmesan, C., Burrows, M.T., Duarte, C.M., et al. (2013) Beyond Climate Change Attribution in Conservation and Ecological Research. Ecology Letters, 16, 58-71.
https://doi.org/10.1111/ele.12098
[3]
Monzón, J., Moyer-Horner, L. and Palamar, M.B. (2011) Climate Change and Species Range Dynamics in Protected Areas. Bioscience, 61, 752-761.
https://doi.org/10.1525/bio.2011.61.10.5
[4]
Young, K.D., Ferreira, S.M. and Van Aarde, R.J. (2009) Elephant Spatial Use in Wet and Dry Savannas of Southern Africa. Journal of Zoology, 278, 189-205.
https://doi.org/10.1111/j.1469-7998.2009.00568.x
[5]
Ceballos, G., Ehrlich, P.R. and Dirzo, R. (2017) Biological Annihilation via the Ongoing Sixth Mass Extinction Signaled by Vertebrate Population Losses and Declines. Proceedings of the National Academy of Sciences of the United States of America, 114, E6089-E6096. https://doi.org/10.1073/pnas.1704949114
[6]
Ripple, W.J., Newsome, T.M., Wolf, C., et al. (2015) Collapse of the World’s Largest Herbivores. Science Advances, 1, e1400103. https://doi.org/10.1126/sciadv.1400103
[7]
IPCC 2007 (2007) Summary for Policymakers. In: Solomon, S., Qin, D., Manning, M., Chen, Z., Marquis, M. and Ave, K.B., Eds., Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change Cambridge, United Kingdom and New York, NY, USA.
[8]
Cahill, A.E., Aiello-Lammens, M.E., Fisher-Reid, M.C., et al. (2012) How Does Climate Change Cause Extinction? Proceedings of the Royal Society B: Biological Sciences, 280, 20121890. https://doi.org/10.1098/rspb.2012.1890
[9]
Dawson, T.P., Jackson, S.T., House, J.I., et al. (2011) Beyond Predictions: Biodiversity Conservation in a Changing Climate. Science, 332, 53-58.
https://doi.org/10.1126/science.1200303
[10]
Parmesan, C. (2006) Ecological and Evolutionary Responses to Recent Climate Change. Annual Review of Ecology, Evolution, and Systematics, 37, 637-669.
[11]
Dunlop, M. and Brown, P. (2008) Implications of Climate Change for Australia’s National Reserve System: A Preliminary Assessment.
https://www.environment.gov.au/system/files/resources/917bb661-b626-44bb-bd52 -325645ae7c49/files/nrs-report.pdf
[12]
Niang, I., Ruppel, O.C., Abdrabo, M.A., Essel, A., Lennard, C., Padgham, J. and Urquhart, P. (2014) Africa. In: Climate Change 2014: Impacts, Adaptation, and Vulnerability. Part B: Regional Aspects. Contribution of Working Group II to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge, UK, 1199-1265.
[13]
Hulme, M., Doherty, R., Ngara, T., New, M. and Lister, D. (2001) African Climate Change: 1900-2100. Climate Research, 17, 145-168.
https://doi.org/10.3354/cr017145
[14]
FEWS NET (2011) East Africa: Past Year One of the Driest on Record in the Eastern Horn. Famine Early Warning System Network Rep.
[15]
Lyon, B. and Dewitt, D.G. (2012) A Recent and Abrupt Decline in the East African Long Rains. Geophysical Research Letters, 39, 1-5.
https://doi.org/10.1029/2011GL050337
[16]
Cooper, P.J.M. and Coe, R. (2011) Assessing and Addressing Climate-Induced Risk in Sub-Saharan Rainfed Agriculture. Experimental Agriculture, 47, 179-184.
https://doi.org/10.1017/S0014479711000019
[17]
Ogutu, J.O., Piepho, H., Said, M.Y., et al. (2016) Extreme Wildlife Declines and Concurrent Increase in Livestock Numbers in Kenya: What Are the Causes? PLoS ONE, 11, e0163249.
[18]
Endris, H.S., Lennard, C., Hewitson, B., et al. (2016) Teleconnection Responses in Multi-GCM Driven CORDEX RCMs over Eastern Africa. Climate Dynamics, 46, 2821-2846. https://doi.org/10.1007/s00382-015-2734-7
[19]
Leadley, P., Pereira, H., Alkemade, R., et al. (2010) Biodiversity Scenarios: Projections of 21st Century Change in Biodiversity and Associated Ecosystem Services.
[20]
Salamin, N., Wüest, R.O., Lavergne, S., et al. (2010) Assessing Rapid Evolution in a Changing Environment. Trends in Ecology & Evolution, 25, 692-698.
https://doi.org/10.1016/j.tree.2010.09.009
[21]
Pereira, H.M., Leadley, P.W., Proença, V., et al. (2010) Scenarios for Global Biodiversity in the 21st Century. Science, 330, 1496-1501.
https://doi.org/10.1126/science.1196624
[22]
Kingdon, J. (1997) The Kingdon Field Guide to African Mammals: A&C Black.
[23]
Blanc, J. (2008) Loxodonta africana. The IUCN Red List of Threatened Species.
[24]
Du Toit, J.G. (2002) Water Requirements. In: Bothma, J.P., Ed., Game Ranch Management Game Ranch Management, 5th Edition, Van Schaik Publishers, 98-102.
[25]
Spinage, C. (1994) Elephants, xvi + 319. T & AD Poyser Natural History, Norfolk.
[26]
Bohrer, G., Beck, P.S., Ngene, S.M., et al. (2014) Elephant Movement Closely Tracks Precipitation-Driven Vegetation Dynamics in a Kenyan Forest-Savanna Landscape. Movement Ecology, 2, 2. https://doi.org/10.1186/2051-3933-2-2
[27]
Scheske, L., Ruitenberg, J. and Bissumbhar, B. (2015) Needs and Availability of Snake Antivenoms: Relevance and Application of International Guidelines. International Journal of Health Policy and Management, 4, 447-457.
https://doi.org/10.15171/ijhpm.2015.75
[28]
Moss, R.H., Edmonds, J., Hibbard, K., et al. (2010) The Next Generation of Scenarios for Climate Change Research and Assessment. Nature, 463, 747-756.
https://doi.org/10.1038/nature08823
[29]
Altmann, J., Alberts, S.C., Altmann, S.A. and Roy, S.B. (2002) Dramatic Change in Local Climate Patterns in the Amboseli Basin, Kenya. African Journal of Ecology, 40, 248-251. https://doi.org/10.1046/j.1365-2028.2002.00366.x
Verdin, A., Funk, C. and Rajagopalan, B.K.W. (2016) Kriging and Local Polynomial Methods for Blending Satellite-Derived and Gauge Precipitation Estimates to Support Hydrologic Early Warning Systems. IEEE Transactions on Geoscience and Remote Sensing, 54, 2552-2562.
[32]
Funk, C., Peterson, P., Landsfeld, M., et al. (2015) The Climate Hazards Infrared Precipitation with Stations—A New Environmental Record for Monitoring Extremes. Scientific Data, 2, Article ID: 150066. https://doi.org/10.1038/sdata.2015.66
[33]
IPCC, Stocker, T.F., Qin, D., et al. (2013) Climate Change 2013—The Physical Science Basis Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge University Press, Cambridge and New York.
[34]
Riahi, K., Rao, S., Krey, V., et al. (2011) RCP 8.5-A Scenario of Comparatively High Greenhouse Gas Emissions. Climatic Change, 109, 33-57.
https://doi.org/10.1007/s10584-011-0149-y
[35]
Van Vuuren, D.P., Edmonds, J., Kainuma, M., et al. (2011) The Representative Concentration Pathways: An Overview. Climatic Change, 109, 5-31.
https://doi.org/10.1007/s10584-011-0148-z
[36]
Nikulin, G., Jones, C., Giorgi, F., et al. (2012) Precipitation Climatology in an Ensemble of CORDEX-Africa Regional Climate Simulations. Journal of Climate, 25, 6057-6078. https://doi.org/10.1175/JCLI-D-11-00375.1
[37]
Endris, H.S. (2016) Projected Changes in Rainfall and Temperature over Greater Horn of Africa (GHA) in Different Scenarios. In Support of: Planning for Resilience in East Africa through Policy, Adaptation, Research, and Economic Development (PREPARED) Project.
[38]
Norton-Griffiths, M. (1978) Counting Animals. Africa Wildlife Leadership Foundation, Nairobi.
[39]
Burnham, K.P. and Anderson, D.R. (2002) Model Selection and Multimodel Inference: A Practical Information-Theoretic Approach. 2nd Edition.
[40]
Ogutu, J.O. (2013) Changing Wildlife Populations in Nairobi National Park and Adjoining Athi-Kaputiei Plains: Collapse of the Migratory Wildebeest. The Open Conservation Biology Journal, 7, 11-26.
https://doi.org/10.2174/1874839201307010011
[41]
Cushman, S.A., Chase, M. and Griffin, C. (2005) Elephants in Space and Time. Oikos, 109, 331-341. https://doi.org/10.1111/j.0030-1299.2005.13538.x
[42]
Woolley, L.-A., Millspaugh, J.J., Woods, R.J., et al. (2009) Intraspecific Strategic Responses of African Elephants to Temporal Variation in Forage Quality. The Journal of Wildlife Management, 73, 827-835. https://doi.org/10.2193/2008-412
[43]
Christo, C. and Wilkinson, M. (2009) Walking Thunder. In the Footsteps of the African Elephant.
[44]
Garstange, M., Davis, R.E., Leggett, K., et al. (2014) Response of African Elephants (Loxodonta africana) to Seasonal Changes in Rainfall. PLoS ONE, 9, e108736.
https://doi.org/10.1371/journal.pone.0108736
[45]
Birkett, P.J., Vanak, A.T., Muggeo, V.M.R., et al. (2012) Animal Perception of Seasonal Thresholds: Changes in Elephant Movement in Relation to Rainfall Patterns. PLoS ONE, 7, e38363. https://doi.org/10.1371/journal.pone.0038363
[46]
Moss, C.J., Croze, H. and Lee, P.C. (2011) The Amboseli Elephants: A Long-Term Perspective on a Long-Lived Mammal.
[47]
Tyrell, J.G. and Coe, M.J. (1974) The Rainfall Regime of Tsavo National Park, Kenya and Its Potential Phenological Significance. Journal of Biogeography, 1, 187-192. https://doi.org/10.2307/3037968
[48]
Serneels, S. and Lambin, E.F. (2001) Impact of Land-Use Changes on the Wildebeest Migration in the Northern Part of the Serengeti-Mara Ecosystem. Biogiography, 28, 391-407. https://doi.org/10.1046/j.1365-2699.2001.00557.x
[49]
Ogutu, J.O., Owen-smith, N., Piepho, H. and Dublin, H.T. (2015) How Rainfall Variation Influences Reproductive Patterns of African Savanna Ungulates in an Equatorial Region Where Photoperiod Variation Is Absent. 1-13.
[50]
Ogutu, J.O., Kuloba, B., Piepho, H. and Kanga, E. (2017) Wildlife Population Dynamics in Human-Dominated Landscapes under Community-Based Conservation: The Example of Nakuru Wildlife Conservancy, Kenya. PLoS ONE, 12, e0169730.
https://doi.org/10.1371/journal.pone.0169730
[51]
Western, D. (1973) The Structure, Dynamics and Changes of the Amboseli Ecosystem. University of Nairobi, Nairobi.
[52]
Inclair, A.R.E., Dublin, H. and Borner, M. (1985) Population Regulation of Serengeti Wildebeest: A Test of the Food Hypothesis. Oecologia, 65, 266-267.
https://doi.org/10.1007/BF00379227
[53]
Gough, K.F. and Kerley, G.I.H. (2006) Demography and Population Dynamics in the Elephants Loxodonta africana of Addo Elephant National Park, South Africa: Is There Evidence of Density Dependent Regulation? Oryx, 40, 434.
https://doi.org/10.1017/S0030605306001189
[54]
Shiao, L., Wu, Y. and Botkin, D.B. (1980) Of Elephants and Men: A Discrete, Stochastic Model for Long-Lived Species with Complex Life Histories. The American Naturalist, 116, 831-849. https://doi.org/10.1086/283672
[55]
De Silva, S., Elizabeth Webber, C., Weerathunga, U.S., et al. (2013) Demographic Variables for Wild Asian Elephants Using Longitudinal Observations. PLoS ONE, 8, e82788.
[56]
Davis, M.B. (1986) Climatic Instability, Time Lag, and Community Disequilibrium. In: Diamond, J.M. and Case, T.J., Eds., Community Ecology, Harper and Row, New York, 269-284.
[57]
Wittemyer, G., Barner Rasmussen, H. and Douglas-Hamilton, I. (2007) Breeding Phenology in Relation to NDVI Variability in Free-Ranging African Elephant. Ecography, 30, 42-50. https://doi.org/10.1111/j.0906-7590.2007.04900.x
[58]
Kioko, M.J.B. (2013) Who Stole the Rain? The Case of Recent Severe Droughts in Kenya.
[59]
Stevenson, M.F. and Walter, O. (2006) Management Guidelines for the Welfare of Zoo Animals Elephants Loxodonta africana and Elephas maximus. 2nd Edition, British and Irish Association of Zoos and Aquariums.
[60]
NOAA (2017) The First Climate Model. NOAA 200th Celebration.
[61]
Phillips, N.A. (1956) The General Circulation of the Atmosphere: A Numerical Experiment. Quarterly Journal of the Royal Meteorological Society, 82, 123-164.
https://doi.org/10.1002/qj.49708235202
[62]
Giorgi, F. and Ictp, A.S. (2009) Producing a New Generation of Regional Climate Model Projections: The CORDEX Framework.
Luhunga, P., Botai, J. and Kahimba, F. (2016) Evaluation of the Performance of CORDEX Regional Climate Models in Simulating Present Climate Conditions of Tanzania Evaluation of the Performance of CORDEX Regional Climate Models in Simulating Present Climate Conditions of Tanzania. Journal of Southern Hemisphere Earth Systems Science, 66, 32-54.
[65]
Chu, P.S., Chen, Y.R. and Schroeder, T.A. (2010) Changes in Precipitation Extremes in the Hawaiian Islands in a Warming Climate. Journal of Climate, 23, 4881-4900.
https://doi.org/10.1175/2010JCLI3484.1
[66]
Hashemi, H., Uvo, C.B. and Berndtsson, R. (2015) Coupled Modeling Approach to Assess Climate Change Impacts on Groundwater Recharge and Adaptation in Arid Areas. Hydrology and Earth System Sciences, 19, 4165-4181.
https://doi.org/10.5194/hess-19-4165-2015
[67]
Jenkins, P., Earle-Richardson, G., Burdick, P. and May, J. (2008) Handling Nonresponse in Surveys: Analytic Corrections Compared with Converting Nonresponders. American Journal of Epidemiology, 167, 369-374.
https://doi.org/10.1093/aje/kwm297
[68]
Teutschbein, C., Wetterhall, F. and Seibert, J. (2011) Evaluation of Different Downscaling Techniques for Hydrological Climate-Change Impact Studies at the Catchment Scale. Climate Dynamics, 37, 2087-2105.
https://doi.org/10.1007/s00382-010-0979-8
[69]
Wilby, R.L., Charles, S.P., Zorita, E., et al. (2004) Guidelines for Use of Climate Scenarios Developed from Statistical Downscaling Methods. Analysis, 27, 1-27.
[70]
Sillmann, J., Kharin, V.V., Zwiers, F.W., et al. (2013) Climate Extremes Indices in the CMIP5 Multimodel Ensemble: Part 2. Future Climate Projections. Journal of Geophysical Research: Atmospheres, 118, 2473-2493.
https://doi.org/10.1002/jgrd.50188
[71]
Laprise, R., Hernández-Díaz, L., Tete, K., et al. (2013) Climate Projections over CORDEX Africa Domain Using the Fifth-Generation Canadian Regional Climate Model (CRCM5). Climate Dynamics, 41, 3219-3246.
https://doi.org/10.1007/s00382-012-1651-2
[72]
World Bank (2013) Turn Down Heat. The Climate Extremes, Regional Impacts, and the Case for Resilience. Washington DC.
[73]
Alexander, L.V., Zhang, X., Peterson, T.C., et al. (2006) Global Observed Changes in Daily Climate Extremes of Temperature and Precipitation. Journal of Geophysical Research: Atmospheres, 111, 1-22. https://doi.org/10.1029/2005JD006290
[74]
Tebaldi, C., Hayhoe, K., Arblaster, J.M. and Meehl, G.A. (2006) Going to the Extremes: An Intercomparison of Model-Simulated Historical and Future Changes in Extreme Events. Climatic Change, 79, 185-211.
https://doi.org/10.1007/s10584-006-9051-4
[75]
Kharin, V.V., Zwiers, F.W., Zhang, X. and Hegerl, G.C. (2007) Changes in Temperature and Precipitation Extremes in the IPCC Ensemble of Global Coupled Model Simulations. Journal of Climate, 20, 1419-1444. https://doi.org/10.1175/JCLI4066.1
[76]
Kharin, V.V., Zwiers, F.W., Zhang, X. and Wehner, M. (2013) Changes in Temperature and Precipitation Extremes in the CMIP5 Ensemble. Climatic Change, 119, 345-357. https://doi.org/10.1007/s10584-013-0705-8
[77]
Wang, G., Wang, D., Trenberth, K.E., et al. (2017) The Peak Structure and Future Changes of the Relationships between Extreme Precipitation and Temperature. Nature Climate Change, 7, 268-274. https://doi.org/10.1038/nclimate3239
[78]
Ndiritu, M.J. (2013) Mathematical and Statistical Population Models: Elephants Population Modeling. 171.
[79]
Poole, J.H. (1989) Mate Guarding, Reproductive Success and Female Choice in African Elephants. Animal Behaviour, 37, 842-849.
https://doi.org/10.1016/0003-3472(89)90068-7
[80]
Rubenstein, D.I. (1992) The Greenhouse Effect and Changes in Animal Behavior: Effects on Social Structure and Life-History Strategies. In: Lovejoy, R.L.P., Ed., Global Warming and Biological Diversity, Yale University Press, New Haven, 180-192.
[81]
Moss, C.J. (2001) The Demography of an African Elephant (Loxodonta africana) Population in Amboseli, Kenya. Journal of Zoology, 255, 145-156.
https://doi.org/10.1017/S0952836901001212
[82]
Leggett, K.E.A. (2006) Home Range and Seasonal Movement of Elephants in the Kunene Region, Northwestern Namibia. African Zoology, 41, 17-36.
https://doi.org/10.1080/15627020.2006.11407332
[83]
Foley, C., Pettorelli, N. and Foley, L. (2008) Severe Drought and Calf Survival in Elephants. Population Ecology, 4, 541-544.
[84]
Lee, P.C., Bussière, L.F., Webber, C.E., et al. (2013) Enduring Consequences of Early Experiences: 40 Year Effects on Survival and Success among African Elephants (Loxodonta africana). Biology Letters, 9, Article ID: 20130011.
https://doi.org/10.1098/rsbl.2013.0011
[85]
Owen-Smith, N. (2006) Demographic Determination of the Shape of Density Dependence for Three African Ungulate Populations. Ecological Monographs, 76, 93-109. https://doi.org/10.1890/05-0765
[86]
Corfield, T.F. (1973) Elephant Mortality in Tsavo National Park, Kenya. African Journal of Ecology, 11, 339-368. https://doi.org/10.1111/j.1365-2028.1973.tb00098.x
[87]
Mumby, H.S., Courtiol, A., Mar, K.U. and Lummaa, V. (2013) Birth Seasonality and Calf Mortality in a Large Population of Asian Elephants. Ecology and Evolution, 3, 3794-3803. https://doi.org/10.1002/ece3.746
[88]
Ogutu, J.O., Piepho, H.-P., Said, M.Y. and Kifugo, S.C. (2014) Herbivore Dynamics and Range Contraction in Kajiado County Kenya: Climate and Land Use Changes, Population Pressures, Governance, Policy and Human-wildlife Conflicts. The Open Ecology Journal, 7, 9-31. https://doi.org/10.2174/1874213001407010009
[89]
Pricope, N.G., Husak, G., Lopez-Carr, D., et al. (2013) The Climate-Population Nexus in the East African Horn: Emerging Degradation Trends in Rangeland and Pastoral Livelihood Zones. Global Environmental Change, 23, 1525-1541.
https://doi.org/10.1016/j.gloenvcha.2013.10.002
[90]
CBS (1981) Kenya Population Census 1979. Volume 1. Central Bureau of Statistics (CBS). Ministry of Economic Planning and Development, Nairobi.
[91]
KNBS (2010) The 2009 Kenya Population and Housing Census. Counting Our People for the Implementation of Vision 2030. Volume II. Kenya National Bureau of Statistics, Ministry of State for Planning, National Development and Vision 2030, Nairobi.
[92]
Okello, M.M., Njumbi, S.J., Kiringe, J.W. and Isiiche, J. (2014) Prevalence and Severity of Current Human-Elephant Conflicts in Amboseli Ecosystem, Kenya: Insights from the Field and Key Informants. Natural Resources, 5, 462-477.
https://doi.org/10.4236/nr.2014.59043
[93]
IUCN (2013) IUCN Annual Report.
[94]
Said, M.Y., Ogutu, J.O., Kifugo, S.C., et al. (2016) Effects of Extreme Land Fragmentation on Wildlife and Livestock Population Abundance and Distribution. Journal for Nature Conservation, 34, 151-164.
https://doi.org/10.1016/j.jnc.2016.10.005
[95]
Ojwang, G.O., Wargute, P.W., Said, M.Y., et al. (2017) Wildlife Migratory Corridors and Dispersal Areas: Kenya Rangelands and Coastal Terrestrial Ecosystems.
[96]
Wayumba, R. and Mwenda, J.N. (2006) The Impact of Changing Land Tenure and Land Use on Wildlife Migration within Group Ranches in Kenya: A Case Study of the Amboseli Ecosystem.
[97]
Western, D., Groom, R. and Worden, J. (2009) The Impact of Subdivision and Sedentarization of Pastoral Lands on Wildlife in an African Savanna Ecosystem. Biological Conservation, 142, 2538-2546. https://doi.org/10.1016/j.biocon.2009.05.025
[98]
Georgiadis, N.J., Olwero, N., Ojwang, G. and Aike, G. (2010) Reassessing Aerial Sample Surveys for Wildlife Monitoring, Conservation, and Management. Smithsonian Contributions to Zoology, 632, 31-42.
[99]
Groom, R.J. and Western, D. (2013) Impact of Land Subdivision and Sedentarization on Wildlife in Kenya’s Southern Rangelands. Rangeland Ecology & Management, 66, 1-9. https://doi.org/10.2111/REM-D-11-00021.1
[100]
Kitina Nyamasyo, S. and Odiara Kihima, B. (2014) Changing Land Use Patterns and Their Impacts on Wild Ungulates in Kimana Wetland Ecosystem, Kenya. International Journal of Biodiversity, 2014, Article ID: 486727.
[101]
Mwenda, J. (2001) Spatial Information in Land Tenure Reform with Special Reference to Kenya.
[102]
Reimer, J.R., Bonsall, M.B. and Maini, P.K. (2016) The Critical Domain Size of Stochastic Population Models. Journal of Mathematical Biology, 74, 1-28.
[103]
Wood, K.A., Stillman, R.A., Daunt, F. and O’Hare, M.T. (2013) Evaluating the Effects of Population Management on a Herbivore Grazing Conflict. PLoS ONE, 8, e56287. https://doi.org/10.1371/journal.pone.0056287
