Influence of river meandering dynamics on riparian vegetation pattern formation

[1] The present work investigates how the dynamics of meandering rivers influence the formation of riparian vegetation patterns. To this aim, a model coupling river dynamics and riparian vegetation evolution was developed. Meandering dynamics were simulated with a fluid dynamical model using shallow water equations on an erodible bed. The riparian vegetation model takes into account some of the main actions caused by the river, i.e., water table oscillations, floods, and sedimentation. A logistic law and an exponential decay were used to model the increase and decrease in the biomass, respectively, consequent to river migration. The numerical simulation by the model highlights how river dynamics are able to induce typical vegetation patterns that are similar to some real riparian landscapes (some examples are shown). The results also show the role of (1) the relevant river-vegetation interactions and (2) the temporal scales of vegetation evolution and river migration.

[1]  A. Porporato,et al.  On the long‐term behavior of meandering rivers , 2005 .

[2]  J. Thornley,et al.  An open-ended logistic-based growth function , 2005 .

[3]  L. Ridolfi,et al.  Nonlinear analysis of the geometry of meandering rivers , 2005 .

[4]  T. Häme,et al.  Upper amazon channel migration , 1992, Naturwissenschaften.

[5]  H. D. Vriend,et al.  Secondary flow in sharp open-channel bends , 2004, Journal of Fluid Mechanics.

[6]  C. Carr.  Patterns of vegetation along the Omo River in southwest Ethiopia , 1998, Plant Ecology.

[7]  I. Rodríguez‐Iturbe,et al.  Ecohydrology of water-controlled ecosystems , 2004 .

[8]  C. Canham,et al.  Evaluating the potential of the SORTIE forest succession model for spatio-temporal analysis of small-scale disturbances , 2002 .

[9]  A. Tsoularis,et al.  Analysis of logistic growth models. , 2002, Mathematical biosciences.

[10]  G. Brierley,et al.  Mediated equilibrium: the influence of riparian vegetation and wood on the long‐term evolution and behaviour of a near‐pristine river , 2002 .

[11]  S. Seagle,et al.  Application of a forest gap model for prediction of browsing effects on riparian forest succession , 2001 .

[12]  K. Richards,et al.  The importance of different scale processes for the restoration of floodplain woodlands , 2001 .

[13]  D. Hannah,et al.  Riparian vegetation and island formation along the gravel‐bed Fiume Tagliamento, Italy , 2001 .

[14]  W. J. Shuttleworth,et al.  The water use of two dominant vegetation communities in a semiarid riparian ecosystem , 2000 .

[15]  C. Hupp.  Hydrology, geomorphology and vegetation of Coastal Plain rivers in the south-eastern USA. , 2000 .

[16]  W. C. Johnson,et al.  Tree recruitment and survival in rivers: influence of hydrological processes. , 2000 .

[17]  H. Piégay,et al.  Channel instability as a control on silting dynamics and vegetation patterns within perifluvial aquatic zones. , 2000 .

[18]  Cliff R. Hupp,et al.  Hydrological and geomorphological impacts on riparian plant communities , 2000 .

[19]  Brian D. Richter,et al.  Prescribing Flood Regimes to Sustain Riparian Ecosystems along Meandering Rivers , 2000 .

[20]  K. Robertson,et al.  Geomorphic processes and spatial patterns of primary forest succession on the Bogue Chitto River, USA , 1999 .

[21]  V. Isham,et al.  Probabilistic modelling of water balance at a point: the role of climate, soil and vegetation , 1999, Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences.

[22]  J. Friedman,et al.  Mortality of riparian box elder from sediment mobilization and extended inundation , 1999 .

[23]  L. Solari,et al.  Finite amplitude bed deformations in totally and partially transporting wide channel bends , 1998 .

[24]  R. Naiman,et al.  The Ecology of Interfaces: Riparian Zones , 1997 .

[25]  R. Wein,et al.  Vegetation development of boreal riparian plant communities after flooding, fire, and logging, Peace River, Canada , 1997 .

[26]  C. Nilsson,et al.  Long-Term Responses of River-Margin Vegetation to Water-Level Regulation , 1997, Science.

[27]  T. Jøssang,et al.  A Simulation Model for Meandering Rivers , 1996 .

[28]  H. Stolum.  River Meandering as a Self-Organization Process , 1996, Science.

[29]  Gregor T. Auble,et al.  Fluvial process and the establishment of bottomland trees , 1996 .

[30]  Robert B. Jacobson,et al.  Woody vegetation and channel morphogenesis in low-gradient, gravel-bed streams in the Ozark Plateaus, Missouri and Arkansas , 1995 .

[31]  R. Kalliola,et al.  Floodplain vegation mosaics in Western Amazonia , 1995 .

[32]  George P. Malanson,et al.  Riparian landscapes: Frontmatter , 1993 .

[33]  S. Rood,et al.  Collapse of riparian poplar forests downstream from dams in western prairies: Probable causes and prospects for mitigation , 1990 .

[34]  J. Pizzuto,et al.  Evaluation of a linear bank erosion equation , 1989 .

[35]  P. Coley,et al.  River dynamics and the diversity of Amazon lowland forest , 1986, Nature.

[36]  Cheryl E. Bradley,et al.  Plains cottonwood recruitment and survival on a prairie meandering river floodplain, Milk River, southern Alberta and northern Montana , 1986 .

[37]  Wiley M. Kitchens,et al.  MODELLING THE IMPACTS OF A RIVER DIVERSION ON BOTTOMLAND FOREST COMMUNITIES IN THE SANTEE RIVER FLOODPLAIN, SOUTH CAROLINA , 1985 .

[38]  S. Beck.  Mathematical Modelling of Meander Interaction , 1984 .

[39]  A. Howard.  Simulation Model of Meandering , 1984 .

[40]  P. Diplas,et al.  Meander Bends of High Amplitude , 1983 .

[41]  W. Dietrich,et al.  Influence of the point bar on flow through curved channels , 1983 .

[42]  M. Lapointe,et al.  The Inherent Asymmetry of River Meander Planform , 1983, The Journal of Geology.

[43]  G. Parker,et al.  Bend theory of river meanders. Part 1. Linear development , 1981, Journal of Fluid Mechanics.

[44]  H. J. De Vriend,et al.  COMPUTATION OF THE FLOW IN SHALLOW RIVER BENDS , 1980 .

[45]  Richard L. Phipps,et al.  Simulation of wetlands forest vegetation dynamics , 1979 .

[46]  G. Nanson,et al.  Forest Succession and Sedimentation on a Meandering-River Floodplain, Northeast British Columbia, Canada , 1977 .

[47]  R. W. Fonda,et al.  Forest Succession in Relation to River Terrace Development in Olympic National Park, Washington , 1974 .

[48]  B. Everitt.  Use of the cottonwood in an investigation of the recent history of a flood plain , 1968 .