Stability and Instability in the Management of Mediterranean Desertification - Environmental Modelling: Finding Simplicity in Complexity - page 397

Brandt, C.J. and J.B. Thornes (eds) (1996) Mediterranean Deserti-
fication and Land Use , John Wiley & Sons, Ltd, Chichester.
Brunsden, D and Thornes, J.B. (1979) Landscape sensitivity and
change. Transactions of the Institute of British Geographers , 4 (4).
Carson, M.A. and Kirkby, M.J. (1972) Hillslope Form and Process ,
Cambridge University Press, Cambridge.
Diamond, S and Woodward, F.E.I. (1998) Vegetation modelling,
in An Atlas of Mediterranean Europe: The Desertification Context
(eds P. Mairota, J.B. Thornes and N. Geeson), John Wiley &
Sons, Ltd, Chichester 68-9.
Dykes, A.P., Mulligan, M. and Wainwright, J. (2012) Monitoring
and Modelling Dynamic Environments , John Wiley & Sons, Ltd,
Chichester.
Eagleson, P.S. (1979) Climate, soil and vegetation. 4. The expected
value of annual evapotranspiration. Water Resources Research ,
14 (5), 731-64.
Eigen, M and Schuster, P. (1979) The Hypercycle , Springer-Verlag,
Berlin.
Elwell, H.A. and Stocking,M.A. (1976) Vegetative cover to estimate
soil erosion hazard in Rhodesia. Geoderma , 15 , 61-70.
Evernden, N. (1992) The Social Creation of Nature , Johns Hopkins
University Press, Baltimore.
Francis, C.F. and Thornes, J.B. (1990) Runoff hydrographs from
three Mediterranean cover types, in Vegetation and erosion (ed.
J.B. Thornes), John Wiley & Sons, Ltd, 363-84.
Geeson, N., Brandt, C.J. and Thornes, J.B. (eds) (2002) Mediter-
ranean Desertification: A Mosaic of Processes and Responses ,John
Wiley & Sons, Ltd, Chichester.
Godron, M., Guillerm, J.L., Poissonet, J. et al . (1981) Dynamics
and management of vegetation, in Ecosystems of the World 11
Mediterranean-type Shrublands (eds F. di Castri, D. Goodall and
R.L. Specht), Elsevier Scientific Publishing Co., Amsterdam.
Hudson, N. (1992) Land Husbandry , B.T. Batsford Limited,
London.
Kirkby, M.J. (1971) Hillslope process-response models based on
the continuity equation. Institute of British Geographers Special
Publication , 3 , 15-30.
Kirkby, M.J, Abrahart, R.J., Bathurst, J.C. et al . (2002) MEDRUSH:
A basin-scale physically based model for forecasting runoff and
sediment yield, in Mediterranean Desertification: A Mosaic of
Processes and Responses (eds N.A. Geeson, C.J. Brandt and J.B.
Thornes), John Wiley & Sons, Ltd, Chichester, pp. 203-29.
Kirkby, M. J. and Cox, N. J. (1995) A climatic index for soil erosion
potential (CSEP) including seasonal and vegetation factors.
Catena , 25 , 333-52.
Kosmas, C., Gerontidis, S. and Marathianou, M. (2000) The
effect of land use change on soils and vegetation over various
lithological formations on Lesvos (Greece). Catena , 40 , 51-68.
Kosmas, C., Kirkby, M.J. and Geeson, N. (1999) The MEDALUS
Project Mediterranean Desertification and Land Use. Manual on
Key Indicators of Desertification and Mapping Environmentally
Sensitive Areas to Desertification , EUR 18882, Official Publica-
tions of the European Communities, Luxembourg.
Lavee, H. and Pariente, S. (1998) Resilience of Soil Structures to
Environmental Changes, in MEDALUS III Project 1: Core Project,
Final Report Covering the Period 1 January 1996 - 31 December
1998 (ed. J. Brandt) Bar Ilan University, Israel, pp. 433-85.

Lotka, A.J. (1925) Elements of Physical Biology , Baltimore, Williams
& Wilkins.
Mairota, P., Thornes, J.B. and Geeson, N. (eds) (1997) Atlas
of Mediterranean Environments in Europe: the Desertification
Context , John Wiley & Sons, Ltd, Chichester.
May, R.L. (1973) Stability and complexity in model ecosystems .
Princetown: University Press.
Maynard-Smith, J. (1974) Models in Ecology , CambridgeUniversity
Press, Cambridge.
Musgrave, G.W. (1947) Quantitative evaluation of factors in water
erosion - a first approximation. Journal of Soil and Water Con-
servation , 2 , 133-8.
Obando, J.A. (1997) Modelling the Impact of Land Abandonment
on Runoff and Soil Erosion in a Semi-arid Catchment, PhD
thesis, King's College London.
Pease, C.M, Land, R. and Bull, J.J. (1989) A model of population
growth, dispersal and evolution in a changing environment.
Ecology , 70 (6), 1657-64.
Pianka, E.R. (1978) Evolutionary Ecology , 2nd edn, Harper & Row,
New York.
Poesen, J. and van Waesemael, B. (1995) Effects of rock fragments
on the structure of tilled topsoil during rain. In Genesis and
Properties of Collapsible Soils (eds E. Derbyshire, T. Dikstra
and I.J. Smalley), Kluwer Academic Publishers, Dordrecht,
pp. 333-43.
P olya, G. (1964) How to Solve It , Princeton University Press,
Princeton.
Roughgarden, J. (1979) The Basics of Population Genetics ,Macmil-
lan, New York.
Rowntree, K., Duma, M., Kakembo, V. and Thornes, J. (2004)
Debunking the myth of overgrazing and soil erosion. Land
Degradation and Development , 15 , 203-14.
Shaxson, T.F.N., Hudson, W., Sanders D.W. et al . (1989) Land
Husbandry: A Framework for Soil and Water Conservation ,
Ankeny IA.
Skellam, J.G. (1951) Random dispersal in theoretical populations.
Biometrica , 38 , 196-218.
Thornes, J.B. (1985) The ecology of erosion. Geography , 70 (3),
222-36.
Thornes, J.B. (1988) Erosional equilibria under grazing, in Con-
ceptual Issues in Environmental Archaeology (eds J. Bintliff,
D. Davidson and E. Grant), Edinburgh University Press,
pp. 193-211.
Thornes, J.B. (1990) The interaction of erosional and vegetational
dynamics in land degradation: spatial outcomes, in Vegeta-
tion and Erosion (ed. J.B. Thornes), John Wiley & Sons, Ltd,
pp. 41-53.
Thornes, J.B. (2005) Coupling erosion, vegetation and grazing.
Land Degradation and Development , 16 , 127-38.
Thornes, J.B. (2007) Modelling soil erosion by grazing: recent
developments and new approaches. Geographical Research , 45 ,
13-26.
Thornes, J.B. and Brandt, C.J. (1993) Erosion-vegetation com-
petition in an environment undergoing climatic change with
stochastic rainfall variations. In Millington, A.C. and Pye, K.T.
(eds) Environmental Change in the Drylands. Biogeographical
and Geomorphological Responses , John Wiley & Sons, Ltd,
Chichester.