A field quantification of coastal dune perennial plants as indicators of surface stability, erosion or deposition

Dune plants both modify the wind field around them and are impacted by various stress factors, among them sand erosion and sand deposition. As coastal dunes are being either stabilized or remobilized, in response to the changes in the rates of sand and dune movement, the vegetation cover and composition are expected to vary reflecting the differences in the sedimentary conditions. In this field study 315 quadrats of 100 m2, in which the perennial plant species were sampled, were analysed with respect to annual rates of sand erosion and deposition that were measured using erosion pins. A visual exploratory data analysis was introduced, based on selective filtering of samples according to their vegetation cover. This method, combined with established statistical tools, enabled the authors to uncover the inclination and indicative power of nine perennial dune plants to either a stabilized or a mobile environment, and to establish whether they are more prevalent in places undergoing sand erosion or sand burial. Two species were found to be clear indicators of a stabilized environment, Stipagrostis lanata, and Retama raetam. Of the species indicating a mobile environment, only one may be stated as a clear indicator of sand erosion: Silene succulenta, with Cyperus macrorrhizus coming close to being an indicator of a less mobile erosive environment. The best indicator species for sand burial was found to be, as expected, Ammophila arenaria, with Artemisia monosperma also indicating high rates of sand mobility especially when its relative cover is higher than 80%. Such information can be used to monitor natural processes of dune stabilization or reactivation, or to assess the success of a management plan that aims at stabilizing a dune, or at remobilizing it by removing vegetation.

[1]  N. Lancaster,et al.  Influence of vegetation cover on sand transport by wind: field studies at Owens Lake, California , 1998 .

[2]  A. Pickart,et al.  TheAmmophila problem on the Northwest coast of North America , 1996 .

[3]  A. Baas.  Chaos, fractals and self-organization in coastal geomorphology: simulating dune landscapes in vegetated environments , 2002 .

[4]  P. Jungerius,et al.  UvA-DARE (Digital Academic Repository) Ecological effects of reactivation of artificially stabilized blowouts in coastal dunes , 1999 .

[5]  Y. Ashkenazy,et al.  Why do active and stabilized dunes coexist under the same climatic conditions? , 2007, Physical review letters.

[6]  S. M. Arens,et al.  Dune Landscape Rejuvenation by Intended Destabilisation in the Amsterdam Water Supply Dunes , 2006 .

[7]  J. F. Leys.  Towards a better model of the effect of prostrate vegetation cover on wind erosion , 1991 .

[8]  Shenggong Li,et al.  Micrometeorological changes following establishment of artificially established artemisia vegetation on desertified sandy land in the Horqin sandy land, China and their implication on regional environmental change , 2002 .

[9]  David S. G. Thomas,et al.  Dune mobility and vegetation cover in the Southwest Kalahari desert , 1995 .

[10]  R. Prasse,et al.  Effect of microbiotic soil surface crusts on emergence of vascular plants , 2000, Plant Ecology.

[11]  Chris H. Hugenholtz,et al.  Biogeomorphic model of dunefield activation and stabilization on the northern Great Plains , 2005 .

[12]  William P. Kustas,et al.  Morphological characteristics of shrub coppice dunes in desert grasslands of southern New Mexico derived from scanning LIDAR. , 2000 .

[13]  G. W. Milligan,et al.  An examination of the effect of six types of error perturbation on fifteen clustering algorithms , 1980 .

[14]  Jef Huisman,et al.  Species dynamics and nutrient accumulation during early primary succession in coastal sand dunes , 1993 .

[15]  K. Emery,et al.  Mediterranean beaches of Israel , 1960 .

[16]  M. El-Bana,et al.  Microenvironmental and vegetational heterogeneity induced by phytogenic nebkhas in an arid coastal ecosystem , 2002, Plant and Soil.

[17]  P. Kutiel,et al.  The effect of removing shrub cover on annual plants and small mammals in a coastal sand dune ecosystem , 2000 .

[18]  D. Blumberg,et al.  Formation of parabolic dunes from barchan and transverse dunes along Israel's Mediterranean coast , 2002 .

[19]  A. Danin.  Adaptations ofStipagrostisspecies to desert dunes , 1996 .

[20]  H. Tsoar,et al.  Sand dunes mobility and stability in relation to climate , 2005 .

[21]  M. Hisschemöller,et al.  The Role of Views of Nature in Dutch Nature Conservation: The Case of the Creation of a Drift Sand Area in the Hoge Veluwe National Park , 2004, Environmental Values.

[22]  R. Kadmon,et al.  Pattern analysis in successional communities – An approach for studying shifts in ecological interactions , 2003 .

[23]  A. Danin,et al.  Plant adaptations in desert dunes , 1991 .

[24]  M. Maun,et al.  Zonation of vegetation along a burial gradient on the leeward slopes of Lake Huron sand dunes , 2005 .

[25]  E. W. Yemm,et al.  Braunton Burrows: The Dune System and Its Vegetation , 1959 .

[26]  A. G. Valk.  Environmental factors controlling the distribution of forbs on coastal foredunes in Cape Hatteras National Seashore , 1974 .

[27]  H. Musick,et al.  Field evaluation of relationships between a vegetation structural parameter and sheltering against wind erosion , 1990 .

[28]  R. Yeaton.  Structure and function of the Namib dune grasslands: characteristics of the environmental gradients and species distributions , 1988 .

[29]  M. Visser,et al.  Assigning life-history traits to plant species to better qualify arid land degradation in Presaharian Tunisia , 2003 .

[30]  M. Barnsley,et al.  Sub-pixel habitat mapping of a costal dune ecosystem , 2002 .

[31]  S. M. Arens,et al.  Mobility of a remobilised parabolic dune in Kennemerland, The Netherlands , 2004 .

[32]  R. Kadmon,et al.  Relationships between shrubs and annual communities in a sandy desert ecosystem: a three-year study , 1997, Plant Ecology.

[33]  M. Menenti,et al.  Effective aerodynamic roughness estimated from airborne laser altimeter measurements of surface features , 2003 .

[34]  D. Ranwell.  MOVEMENT OF VEGETATED SAND DUNES AT NEWBOROUGH WARREN, ANGLESEY , 1958 .

[35]  Francisco de Castro.  Computer simulation of the dynamics of a dune system , 1995 .

[36]  Yoshiaki Kuriyama,et al.  Influence of vegetation on aeolian sand transport rate from a backshore to a foredune at Hasaki, Japan , 2005 .

[37]  S. Dury,et al.  THE USE OF HYPERSPECTRAL DATA IN COASTAL ZONE VEGETATION MONITORING , 2004 .

[38]  P. Hesp.  Ecological processes and plant adaptations on coastal dunes , 1991 .

[39]  P. Moreno‐Casasola,et al.  Sand movement as a factor in the distribution of plant communities in a coastal dune system , 1986, Vegetatio.

[40]  Zhenying Huang,et al.  Artemisia monospermaachene germination in sand: effects of sand depth, sand/water content, cyanobacterial sand crust and temperature , 1998 .

[41]  M. Sykes,et al.  An experimental investigation into the response of New Zealand sand dune species to different depths of burial by sand. , 1990 .

[42]  M. Kent,et al.  Studies of vegetation burial: a focus for biogeography and biogeomorphology? , 2001 .

[43]  Eyal Ben-Dor,et al.  The spatial and temporal variability of sand erosion across a stabilizing coastal dune field , 2006 .

[44]  M. Raupach,et al.  The effect of roughness elements on wind erosion threshold , 1993 .

[45]  Eyal Ben-Dor,et al.  Surface properties of stabilizing coastal dunes: combining spectral and field analyses , 2007 .

[46]  E. Ben-Dor,et al.  Monitoring sand dune stabilization along the coastal dunes of Ashdod-Nizanim, Israel, 1945–1999 , 2004 .

[47]  Hans J Herrmann,et al.  Vegetation against dune mobility. , 2006, Physical review letters.