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Artículos de revistas sobre el tema "Vegetated dunes"

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Publicado: 4 de junio de 2021
Última modificación: 13 de febrero de 2022

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1

Gralher, Christine, Nobuhisa Kobayashi, and Kideok Do. "WAVE OVERWASH OF VEGETATED DUNES." Coastal Engineering Proceedings 1, no. 33 (2012): 34. http://dx.doi.org/10.9753/icce.v33.sediment.34.

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Sand dunes play a significant role during coastal storms by absorbing the impacts of storm surge and high waves. Therefore, rapid profile changes and destruction of sand dunes, which may be caused by wave-induced overwash, lead to an increased flood risk landward of dunes. The effects of vegetation on dune erosion and overwash during storm events, however, have never been studied. This study is based on a laboratory experiment investigating the effects of woody plants on dune erosion and overwash of high and low dunes. During the five tests conducted foredune scarping was observed for the thre
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2

McCann, S. B., and M. L. Byrne. "Stratification models for vegetated coastal dunes in Atlantic Canada." Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences 96 (1989): 203–15. http://dx.doi.org/10.1017/s0269727000010939.

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SynopsisThe principal types of stratification and some characteristic sedimentary sequences found in vegetated coastal dunes in Atlantic Canada are described. Four examples are selected to show a range of dune types and depositional settings. In each case the documentation and interpretation of the internal structure and stratification has made an important contribution to understanding the evolution of the dunes. Stratification and depositional models are presented for:(1) a single, continuous, transgressive foredune ridge which maintains its form during transgression;(2) a discontinuous tran
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3

Tsoar, H. "Linear dunes - forms and formation." Progress in Physical Geography: Earth and Environment 13, no. 4 (1989): 507–28. http://dx.doi.org/10.1177/030913338901300402.

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Most geomorphologists and geologists do not differentiate the various types of linear dune and refer to them as one dune type mainly in the terms of linear, longitudinal or seif dunes. In recent morphodynamic and genetic classifications of dunes, all types of linear dunes are lumped under the heading of longitudinal dunes (Wasson and Hyde, 1983; Hunter et al., 1983). This review, however, substantiates three different simple linear dunes - lee dunes, seifs and vegetated- linear - each of which has a different shape and mechanism of formation and elongation.
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4

McArthur, E., and Stewart Sanderson. "Great Sand Dunes National Monument Vegetation Patterns." UW National Parks Service Research Station Annual Reports 15 (January 1, 1991): 185–89. http://dx.doi.org/10.13001/uwnpsrc.1991.3019.

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This project is designed to chacterize and map the vegetation of the Great Sand Dunes National Monument, Colorado (GSDNM) and to determine if the vegetated areas in the dune field are permanent, temporary, or migratory. It is not known if the vegetation around the dunes is encroaching on the dunes, being replaced by the dunes or is stable. There are also concerns about the possible effect a proposed water export project adjacent to GSDNM would have on the dunes and their vegetation.
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5

Goldsmith, Victor. "Coastal sand dunes as geomorphological systems." Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences 96 (1989): 3–15. http://dx.doi.org/10.1017/s0269727000010824.

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SynopsisThe importance of aeolian deposition is clearly shown by the size and bulk of coastal dunes. Sand dunes occur where there is a large supply of sand, a wind to move it, and a place in which it can accumulate. A dune classification is presented which takes into account the origin, internal geometry and surface geomorphology of coastal dunes. Since the main element that distinguishes coastal dunes from desert dunes is vegetation, the relative amount of vegetation may be used as a typology. Four dune types are distinguished: vegetated dunes, parabolic dunes, medanos (i.e. large sand hills
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6

Figlus, Jens, Jacob M. Sigren, Anna R. Armitage, and Robert C. Tyler. "EROSION OF VEGETATED COASTAL DUNES." Coastal Engineering Proceedings 1, no. 34 (2014): 20. http://dx.doi.org/10.9753/icce.v34.sediment.20.

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7

Kortenhaus, Andreas, David Schürenkamp, Thorsten Piontkowitz, and Hocine Oumeraci. "RELIABILITY ASSESSMENT OF A COASTAL DIKE AND DUNE SYSTEM AT THE SOUTH OF FALSTER, DENMARK." Coastal Engineering Proceedings 1, no. 33 (2012): 59. http://dx.doi.org/10.9753/icce.v33.management.59.

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The ‘Falster dike’ is a system of a coastal vegetated dunes with a grass-covered sand dike protecting a low-lying area of about 7,000 summer houses, many of which being inhabited during winter, and therefore in danger of any storm surge induced flooding. The paper discusses (i) the assessment and uncertainties of relevant data such as bathymetry, topography, wind and wave data, water levels; (ii) deterministic calculations of wave run-up and overtopping of the dike without dunes; (iii) the calculations of dune erosion; and (iv) a reliability assessment of a dune and dike system. Results sugges
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8

Wilson, BA, NM White, A. Hanley, and DL Tidey. "Population fluctuations of the New Holland mouse Pseudomys novaehollandiae at Wilson?s Promontory National Park, Victoria." Australian Mammalogy 27, no. 1 (2005): 49. http://dx.doi.org/10.1071/am05049.

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The New Holland mouse (Pseudomys novaehollandiae) was first recorded at Wilson?s Promontory in 1972 in heathland vegetation, but has not been located in this habitat subsequently. The species was not trapped again until 1993 when it was found in calcarenite dune woodland on the Yanakie Isthmus. The aims of this study were to assess the population dynamics and habitat use of the species in this dune habitat. Mark-recapture trapping was conducted at three sites from 1999 to 2002. One site was located on low (0 - 5 m), flat sand dunes and open swales, another on medium (5 ? 10 m) vegetated dunes,
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9

Mahmoud, Ahmed Mutasim Abdalla, Alessandro Novellino, Ekbal Hussain, Stuart Marsh, Panagiotis Psimoulis, and Martin Smith. "The Use of SAR Offset Tracking for Detecting Sand Dune Movement in Sudan." Remote Sensing 12, no. 20 (2020): 3410. http://dx.doi.org/10.3390/rs12203410.

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Sand movement is one of the main environmental hazards in Northern Sudan that threaten livelihood and rural communities. This paper investigates for the first time the use of the Synthetic Aperture Radar (SAR) offset tracking technique for detecting sand movement in Northern Sudan, and distinguishes the impact of the movement influencing factors: wind speed/direction, vegetation and topography. High-resolution images from the Sentinel-1 satellite were used for the generation of displacement maps. Three different dune fields with different characteristics were investigated for a study period be
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10

Smyth, Thomas AG, Irene Delgado-Fernandez, Derek WT Jackson, Brian Yurk, and Paul Rooney. "Greedy parabolics: Wind flow direction within the deflation basin of parabolic dunes is governed by deflation basin width and depth." Progress in Physical Geography: Earth and Environment 44, no. 5 (2020): 643–60. http://dx.doi.org/10.1177/0309133319899306.

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Parabolic dunes are ‘U’ or ‘V’-shaped aeolian landforms that form on pre-existing sand deposits. Their morphology consists of an upwind deflation basin, bordered by often vegetated trailing arms and a downwind depositional lobe. The orientation of parabolic dunes is commonly attributed to the prevailing or resultant wind direction. Consequently, the orientation of parabolic dunes stabilised by vegetation growth has been used as a proxy for wind direction during past climates in several studies. However, the ability or extent of parabolic dune morphology to steer incident wind flow parallel to
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11

Robson, Diana Bizecki. "A Conservation Evaluation of Smooth Goosefoot, Chenopodium subglabrum (Chenopodiaceae), in Canada." Canadian Field-Naturalist 120, no. 3 (2006): 335. http://dx.doi.org/10.22621/cfn.v120i3.325.

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Smooth Goosefoot (Chenopodium subglabrum) is restricted to North America and reaches its northern distribution limit in Alberta, Saskatchewan and Manitoba. The habitat of Chenopodium subglabrum contains some element of active sand. It is commonly found on the stabilizing edges of active dunes as well as dune blowouts, and occasionally on bare or recently disturbed sand plains. Chenopodium subglabrum is a sexually reproducing annual species with seeds that may remain in the seed bank for several years, waiting for the conditions it favours for germination. Germination of this species is erratic
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12

Bryant, Duncan B., Mary Anderson Bryant, Jeremy A. Sharp, Gary L. Bell, and Christine Moore. "The response of vegetated dunes to wave attack." Coastal Engineering 152 (October 2019): 103506. http://dx.doi.org/10.1016/j.coastaleng.2019.103506.

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13

Carr, Andrew S., Simon J. Armitage, Juan-Carlos Berrío, Bibiana A. Bilbao, and Arnoud Boom. "An Optical luminescence chronology for late Pleistocene aeolian activity in the Colombian and Venezuelan Llanos." Quaternary Research 85, no. 2 (2016): 299–312. http://dx.doi.org/10.1016/j.yqres.2015.12.009.

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The lowland savannas (Llanos) of Colombia and Venezuela are covered by extensive aeolian landforms for which little chronological information exists. We present the first optically stimulated luminescence (OSL) age constraints for dunes in the Llanos Orientales of lowland Colombia and new ages for dunes in the Venezuelan Llanos. The sampled dunes are fully vegetated and show evidence of post-depositional erosion. Ages range from 4.5 ± 0.4 to 66 ± 4 ka, with the majority dating to 27–10 ka (Marine Isotope Stage 2). Some dunes accumulated quickly during the last glacial maximum, although most we
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14

Nishimori, Hiraku, and Hirohisa Tanaka. "A simple model for the formation of vegetated dunes." Earth Surface Processes and Landforms 26, no. 10 (2001): 1143–50. http://dx.doi.org/10.1002/esp.258.

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15

Compton, John S., and Giuliana Franceschini. "Holocene geoarchaeology of the Sixteen Mile Beach barrier dunes in the Western Cape, South Africa." Quaternary Research 63, no. 1 (2005): 99–107. http://dx.doi.org/10.1016/j.yqres.2004.09.006.

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Holocene evolution and human occupation of the Sixteen Mile Beach barrier dunes on the southwest coast of South Africa between Yzerfontein and Saldanha Bay are inferred from the radiocarbon ages of calcareous dune sand, limpet shell (Patella spp.) manuports and gull-dropped white mussel shells (Donax serra). A series of coast-parallel dunes have prograded seaward in response to an overall marine regression since the mid-Holocene with dated shell from relict foredunes indicating periods of shoreline progradation that correspond to drops in sea level at around 5900, 4500 and 2400 calibrated year
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16

Parker, Adrian G., Andrew S. Goudie, Stephen Stokes, et al. "A Record of Holocene Climate Change from Lake Geochemical Analyses in Southeastern Arabia." Quaternary Research 66, no. 3 (2006): 465–76. http://dx.doi.org/10.1016/j.yqres.2006.07.001.

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AbstractLacustrine sediments from southeastern Arabia reveal variations in lake level corresponding to changes in the strength and duration of Indian Ocean Monsoon (IOM) summer rainfall and winter cyclonic rainfall. The late glacial/Holocene transition of the region was characterised by the development of mega-linear dunes. These dunes became stabilised and vegetated during the early Holocene and interdunal lakes formed in response to the incursion of the IOM at approximately 8500 cal yr BP with the development of C3 dominated savanna grasslands. The IOM weakened ca. 6000 cal yr BP with the on
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17

Watanabe, Kunihiro, and Fuminori Kato. "EVALUATION OF VEGETATED DUNES FOR EROSION RESISTANCE AGAINST TSUNAMI OVERFLOW." Coastal Engineering Proceedings, no. 36v (December 31, 2020): 30. http://dx.doi.org/10.9753/icce.v36v.papers.30.

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A total of 14 soil samples were collected from sand dunes without scattering, and the process of tsunami-induced erosion was observed using hydraulic model experiments. The densities of vegetation roots were measured at 45 points on seven beaches along the Japanese coast. The results of the experiment confirmed that the roots of vegetation highly affected the resistance of soil against erosion. Based on this result, an erosion model based on the index alpha was proposed, and the relationship between alpha and root density was described. Then, the applicability of the proposed erosion model was
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18

Honrado, J., J. Vicente, A. Lomba, et al. "Fine-scale patterns of vegetation assembly in the monitoring of changes in coastal sand-dune landscapes." Web Ecology 10, no. 1 (2010): 1–14. http://dx.doi.org/10.5194/we-10-1-2010.

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Abstract. Understanding dune ecosystem responses to multi-scale environmental changes can provide the framework for reliable forecasts and cost-efficient protocols for detecting shifts in prevailing coastal dynamics. Based on the hypothesis that stress and disturbance interact as primary community controls in coastal dunes, we studied the fine-scale floristic assembly of foredune vegetation, in its relation to topography, along regional and local environmental gradients in the 200 km long coastline of northern Portugal, encompassing a major biogeographic transition in western Europe. Thirty to
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19

Mathew, Sojan, Robin G. D. Davidson-Arnott, and Jeff Ollerhead. "Evolution of a beach–dune system following a catastrophic storm overwash event: Greenwich Dunes, Prince Edward Island, 1936–2005." Canadian Journal of Earth Sciences 47, no. 3 (2010): 273–90. http://dx.doi.org/10.1139/e09-078.

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Greenwich Dunes, Prince Edward Island National Park, is a sandy mainland and barrier spit beach–dune complex stretching for about 10 km along the northeast shore of Prince Edward Island, Canada. In October 1923, surge associated with an intense storm produced catastrophic overwash along the whole length of the study area. Subsequent evolution of the system was quantified from historic aerial photographs taken in 1936, 1953, 1971, 1997, and 2005. Orthophoto mosaics were generated for each photo set using PCI Geomatica OrthoEngine, a digital photogrammetric software. Linear changes in shoreline
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20

Delgado-Fernandez, Irene, Robin G. D. Davidson-Arnott, and Patrick A. Hesp. "Is ‘re-mobilisation’ nature restoration or nature destruction? A commentary." Journal of Coastal Conservation 23, no. 6 (2019): 1093–103. http://dx.doi.org/10.1007/s11852-019-00716-9.

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Abstract Coastal dunes are experiencing increases in vegetation cover and reduced mobility levels in many sites around the world. Ecology-led approaches to coastal dune management perceive this change as ‘undesirable’ because the increase in plant cover leads to a reduction in partially vegetated to bare sand habitats and the species depending on them. This has generated a shift in the management paradigm where the objective is to revert this trend by intervening in the landscape, with actions ranging from re-introducing grazing and mowing, to mechanical removal of dune form and vegetation (du
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21

Moseby, K. E., R. Brandle, and M. Adams. "Distribution, habitat and conservation status of the rare dusky hopping-mouse, Notomys fuscus (Rodentia : Muridae)." Wildlife Research 26, no. 4 (1999): 479. http://dx.doi.org/10.1071/wr97061.

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The distribution, habitat and conservation status of Notomys fuscus were determined by collating past records of the species and conducting field investigations covering areas of historical distribution and similar habitats. Detailed population sampling was carried out in two geographically distinct locations where populations appeared to be extant. Evidence of N. fuscus was found throughout the Strzelecki Desert east and south of the Strzelecki Creek in South Australia and in an isolated group of dunes south-east of the Diamantina River in south-west Queensland. Populations were located in a
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22

van der Walt,, Andries J., Riegardt M. Johnson, Don A. Cowan, Mary Seely, and Jean-Baptiste Ramond. "Unique Microbial Phylotypes in Namib Desert Dune and Gravel Plain Fairy Circle Soils." Applied and Environmental Microbiology 82, no. 15 (2016): 4592–601. http://dx.doi.org/10.1128/aem.00844-16.

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ABSTRACTFairy circles (FCs) are barren circular patches of soil surrounded by grass species. Their origin is poorly understood. FCs feature in both the gravel plains and the dune fields of the Namib Desert. While a substantial number of hypotheses to explain the origin and/or maintenance of fairy circles have been presented, none are completely consistent with either their properties or their distribution. In this study, we investigated the hypothesis that FC formation in dunes and gravel plains is due to microbial phytopathogenesis. Surface soils from five gravel plain and five dune FCs, toge
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23

Brodie, Katherine, Ian Conery, Nicholas Cohn, Nicholas Spore, and Margaret Palmsten. "Spatial Variability of Coastal Foredune Evolution, Part A: Timescales of Months to Years." Journal of Marine Science and Engineering 7, no. 5 (2019): 124. http://dx.doi.org/10.3390/jmse7050124.

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Coastal foredunes are topographically high features that can reduce vulnerability to storm-related flooding hazards. While the dominant aeolian, hydrodynamic, and ecological processes leading to dune growth and erosion are fairly well-understood, predictive capabilities of spatial variations in dune evolution on management and engineering timescales (days to years) remain relatively poor. In this work, monthly high-resolution terrestrial lidar scans were used to quantify topographic and vegetation changes over a 2.5 year period along a micro-tidal intermediate beach and dune. Three-dimensional
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24

Byrne, M. L., and S. B. McCann. "Stratification and sedimentation in complex vegetated coastal dunes, Sable Island, Nova Scotia." Sedimentary Geology 66, no. 3-4 (1990): 165–79. http://dx.doi.org/10.1016/0037-0738(90)90058-2.

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25

Byrne, M. L., and S. B. McCann. "The internal structure of vegetated coastal sand dunes, Sable Island, Nova Scotia." Sedimentary Geology 84, no. 1-4 (1993): 199–218. http://dx.doi.org/10.1016/0037-0738(93)90056-b.

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26

Van Dam, R. L. "Internal structure and development of an aeolian river dune in The Netherlands, using 3-D interpretation of ground-penetrating radar data." Netherlands Journal of Geosciences - Geologie en Mijnbouw 81, no. 1 (2002): 27–37. http://dx.doi.org/10.1017/s0016774600020540.

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AbstractGround-penetrating radar data from a regular grid are used to study the internal structure and development of a 9-m high aeolian river dune in the Dutch Rhine-Meuse delta. The purpose of this investigation was to image the internal sedimentary structures to better understand the development of these aeolian river dunes. Three radar facies can be recognised in the GPR sections. Radar facies 1 has a maximum thickness of 5 to 6 m and is characterised by dipping, parallel reflections with a maximum length of at least 20 m. The reflections from perpendicular sections, analysed using closed-
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27

Nuyts, Siegmund, Michael O'Shea, and Jimmy Murphy. "Monitoring the Morphodynamic Cannibalization of the Rossbeigh Coastal Barrier and Dune System over a 19-Year Period (2001–2019)." Journal of Marine Science and Engineering 8, no. 6 (2020): 421. http://dx.doi.org/10.3390/jmse8060421.

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This research presents a study on the morphodynamic evolution of the Rossbeigh coastal barrier and its dune system, located in Dingle Bay, County Kerry, Ireland. The study examines the evolution of the system over a 19-year period (2001–2019) through remote sensing, geographic information system (GIS) analysis, and field-based surveys. This research provides an ideal opportunity to examine a natural erosion event, referred to as cannibalization on a coastal barrier and its dune system. Since the beginning of this century, significant erosion has been visible on the coastal barrier, with the er
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28

Cao, Chengyou, Ying Zhang, Zhenbo Cui, Hailong Li, Tingting Wang, and Qing Ren. "Recovery of Soil-Denitrifying Community along a Chronosequence of Sand-Fixation Forest in a Semi-Arid Desertified Grassland." Forests 12, no. 3 (2021): 354. http://dx.doi.org/10.3390/f12030354.

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Revegetation on moving sand dunes is a widely used approach for restoring the degraded sandy land in northeastern China. The development of sand-fixation forest might improve the structures of soil microbial communities and affect soil N cycle. In the present study, the diversities of nitrite (nirS and nirK) and nitrous oxide (nosZ) reductase genes were investigated under a chronosequence of Caragana microphylla sand-fixation shrub forest (9- and 19-year), adjacent non-vegetated shifting sand-dune, and a natural forest dominated by C. microphylla. The dominant compositions and gene abundance w
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29

Havholm, Karen G., and Garry L. Running IV. "Stratigraphy, sedimentology, and environmental significance of late mid-Holocene dunes, Lauder Sand Hills, glacial Lake Hind Basin, southwestern Manitoba." Canadian Journal of Earth Sciences 42, no. 5 (2005): 847–63. http://dx.doi.org/10.1139/e05-019.

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Mid-Holocene eolian dune and sand-sheet deposits, rare in the northern Great Plains, are buried under a meter or more of younger sediment in the glacial Lake Hind Basin, southwestern Manitoba. Six facies observed in three cut-bank exposures allow reconstruction of sedimentary processes and resulting landscape at the study site in the basin center around 6100 cal (calibrated) BP. A mosaic of parabolic dunes with interdune and dune-marginal lightly vegetated sand sheets developed in the Souris River flood plain that was least partly covered with woodlands and wetlands. During floods, nearby inte
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30

Wiggs, Giles F. S., Ian Livingstone, David S. G. Thomas, and Joanna E. Bullard. "Airflow and roughness characteristics over partially vegetated linear dunes in the southwest Kalahari Desert." Earth Surface Processes and Landforms 21, no. 1 (1996): 19–34. http://dx.doi.org/10.1002/(sici)1096-9837(199601)21:1<19::aid-esp508>3.0.co;2-p.

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31

Xu, Zhiwei, Joseph A. Mason, Chi Xu, et al. "Critical transitions in Chinese dunes during the past 12,000 years." Science Advances 6, no. 9 (2020): eaay8020. http://dx.doi.org/10.1126/sciadv.aay8020.

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Dune systems can have alternative stable states that coexist under certain environmental conditions: a vegetated, stabilized state and a bare active state. This behavior implies the possibility of abrupt transitions from one state to another in response to gradual environmental change. Here, we synthesize stratigraphic records covering 12,000 years of dynamics of this system at 144 localities across three dune fields in northern China. We find side-by-side coexistence of active and stabilized states, and occasional sharp shifts in time between those contrasting states. Those shifts occur async
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32

Walker, Ian J., Patrick A. Hesp, Robin G. D. Davidson-Arnott, and Jeff Ollerhead. "Topographic Steering of Alongshore Airflow over a Vegetated Foredune: Greenwich Dunes, Prince Edward Island, Canada." Journal of Coastal Research 225 (September 2006): 1278–91. http://dx.doi.org/10.2112/06a-0010.1.

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33

Roskin, Joel, Naomi Porat, Haim Tsoar, Dan G. Blumberg, and Anja M. Zander. "Age, origin and climatic controls on vegetated linear dunes in the northwestern Negev Desert (Israel)." Quaternary Science Reviews 30, no. 13-14 (2011): 1649–74. http://dx.doi.org/10.1016/j.quascirev.2011.03.010.

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34

Tao, Li, Xiao Honglang, and Li Xinrong. "Modeling the Effects of Crust on Rain Infiltration in Vegetated Sand Dunes in Arid Desert." Arid Land Research and Management 15, no. 1 (2001): 41–48. http://dx.doi.org/10.1080/15324980119192.

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35

Przyborowski, Łukasz, Anna Łoboda, and Robert Bialik. "Experimental Investigations of Interactions between Sand Wave Movements, Flow Structure, and Individual Aquatic Plants in Natural Rivers: A Case Study of Potamogeton Pectinatus L." Water 10, no. 9 (2018): 1166. http://dx.doi.org/10.3390/w10091166.

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Long-duration measurements were performed in two sandy bed rivers, and three-dimensional (3D) flow velocity and bottom elevation changes were measured in a vegetated area and in a clear region of a river. Detailed flow velocity profiles downstream and upstream of a single specimen of Potamogeton pectinatus L. were obtained and the bed morphology was assessed. Potamogeton plants gathered from each river were subjected to tensile and bending tests. The results show that the existence of the plants was influenced by both bottom and flow conditions, as the plants were located where water velocity
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36

Murray, John W. "Wind transport of foraminiferal tests into subaerial dunes: an example from western Ireland." Journal of Micropalaeontology 28, no. 2 (2009): 185–87. http://dx.doi.org/10.1144/jm.28.2.185.

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Abstract. INTRODUCTIONThe empty tests of dead foraminifera behave as sedimentary particles and are subject to transport, although their different shapes and effectively low density means that their hydraulic equivalence is greater than that of spherical quartz grains (see Haake, 1962). Their estimated traction velocities range from c. 4 cm s−1 to c. 13 cm s−1 (Snyder et al., 1999). The presence of calcareous foraminiferal tests in a fossil sedimentary deposit would normally be taken as an indication of deposition in a marine environment. However, it has long been known that wind can transport
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37

Fabbri, Stefano, Edoardo Grottoli, Clara Armaroli, and Paolo Ciavola. "Using High-Spatial Resolution UAV-Derived Data to Evaluate Vegetation and Geomorphological Changes on a Dune Field Involved in a Restoration Endeavour." Remote Sensing 13, no. 10 (2021): 1987. http://dx.doi.org/10.3390/rs13101987.

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Nowadays, the employment of high-resolution Digital Surface Models (DSMs) and RGB orthophotos has become fundamental in coastal system studies. This work aims to explore the potentiality of low-cost Unmanned Aerial Vehicle (UAV) surveys to monitor the geomorphic and vegetation state of coastal sand dunes by means of high-resolution (2–4 cm) RGB orthophotos and DSMs. The area of study (Punta Marina, Ravenna, Italy), in the North Adriatic Sea, was considered very suitable for these purposes because it involves a residual coastal dune system, damaged by decades of erosion, fragmentation and human
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38

Willemse, Nico W., Eduard A. Koster, Babette Hoogakker, and Frank G. M. van Tatenhove. "A continuous record of Holocene eolian activity in West Greenland." Quaternary Research 59, no. 3 (2003): 322–34. http://dx.doi.org/10.1016/s0033-5894(03)00037-1.

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AbstractEolian landforms are widespread alongside proglacial valley-sandurs in West Greenland and comprise low-relief sand sheets, climbing dunes, and upland loess. Sedimentary facies mainly reflect distance to outwash-source zones and the influence of vegetation cover. The sediments show stratification types typical for poorly to moderately vegetated sand-sheets, alternately laminated silt/peat sequences, and unstratified loess. Twenty-five accelerator mass spectrometry 14C dates provide the basis for the chronostratigraphy of the inland eolian deposits. 14C dates from interstratified sand-sh
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39

Roskin, Joel, Dan G. Blumberg, and Itzhak Katra. "Last millennium development and dynamics of vegetated linear dunes inferred from ground-penetrating radar and optically stimulated luminescence ages." Sedimentology 61, no. 5 (2014): 1240–60. http://dx.doi.org/10.1111/sed.12099.

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40

Odériz, Itxaso, Natalie Knöchelmann, Rodolfo Silva, Rusty A. Feagin, M. Luisa Martínez, and Edgar Mendoza. "Reinforcement of vegetated and unvegetated dunes by a rocky core: A viable alternative for dissipating waves and providing protection?" Coastal Engineering 158 (June 2020): 103675. http://dx.doi.org/10.1016/j.coastaleng.2020.103675.

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41

Wang, Tiejun, Vitaly A. Zlotnik, David Wedin, and Kathryn D. Wally. "Spatial trends in saturated hydraulic conductivity of vegetated dunes in the Nebraska Sand Hills: Effects of depth and topography." Journal of Hydrology 349, no. 1-2 (2008): 88–97. http://dx.doi.org/10.1016/j.jhydrol.2007.10.027.

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42

Hugenholtz, Chris H., Stephen A. Wolfe, and Brian J. Moorman. "Effects of sand supply on the morphodynamics and stratigraphy of active parabolic dunes, Bigstick Sand Hills, southwestern SaskatchewanGeological Survey of Canada Contribution 20060654." Canadian Journal of Earth Sciences 45, no. 3 (2008): 321–35. http://dx.doi.org/10.1139/e08-001.

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Sand supply is a major controlling factor on parabolic dune form and stratigraphy in inland settings. In this study, aerial photographs, ground-penetrating radar (GPR), and stratigraphic analysis document the morphodynamics of an individual and compound parabolic dune in the Bigstick Sand Hills, southwestern Saskatchewan. Migration rates for the last 60 years are comparable, although the profile morphologies differ, with the individual dune having a more aerodynamic form. Stratigraphic facies are also similar in both dune types, but the overall internal architecture imaged by GPR differs consi
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43

Naser, Naser Al, Annette Grilli, Stephan Grilli, Christopher Baxter, Aaron Bradshaw, and Brian Maggi. "LAND USE AND MITIGATION EFFECTS ON BARRIER BEACH EROSION IN STORMS: CASE STUDY IN RHODE ISLAND." Coastal Engineering Proceedings, no. 36 (December 30, 2018): 108. http://dx.doi.org/10.9753/icce.v36.papers.108.

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Sea Level Rise (SLR) and storm intensification lead to re-evaluating inundation assessments along the North Atlantic US shoreline. A particular effort is devoted to assessing coastal community risk to “100-year storm” events in Rhode Island, US, using a chain of state-of-the-art storm surge, wave propagation, and coastal erosion 2D models. Damage risks imposed on infrastructures and services incited US federal and state agencies to come up with innovative engineering solutions to improve coastal resiliency while preserving natural coastal and marine environments. This study critically eval
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44

Qiu, S., A. J. McComb, R. W. Bell, and J. A. Davis. "Nutrient response to soil and litter metabolic activity in a transect across a seasonal wetland." Marine and Freshwater Research 54, no. 3 (2003): 243. http://dx.doi.org/10.1071/mf02156.

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Many wetlands in the interdunal depression of coastal sand dunes of the Swan Coastal Plain are surrounded by partially vegetated catchments. Although litter can be an important source of nutrients, little is known about litter related microbial activity in these catchments, especially its role in regulating nutrient concentrations in soils during the wet season. Heterotrophic microbial activity and phosphorus (P) dynamics were monitored before and after the onset of the wet season along transects from a vegetated catchment to the lakebed in Thomsons Lake, south-western Australia. Microbial act
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45

IELPI, ALESSANDRO. "Lateral accretion of modern unvegetated rivers: remotely sensed fluvial–aeolian morphodynamics and perspectives on the Precambrian rock record." Geological Magazine 154, no. 3 (2016): 609–24. http://dx.doi.org/10.1017/s001675681600025x.

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AbstractModern unvegetated rivers flowing through aeolian-dune fields demonstrate potential as analogues for pre-vegetation fluvial landscapes. A prominent example is contained in the Lençóis Maranhenses of Brazil, a coastal aeolian system hosting the semi-perennial Rio Negro. Remotely sensed images covering c. 45 years display the rhythmic expansion and wind-driven shift of single-threaded and sinuous fluvial trunks alternating with wider braided plains. Sinuous tracts feature mid-channel and bank-attached bars, including expansional point bars with subdued relief. The morphology, accretion a
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46

Wang, X. P., Z. N. Wang, R. Berndtsson, Y. F. Zhang, and Y. X. Pan. "Desert shrub stemflow and its significance in soil moisture replenishment." Hydrology and Earth System Sciences 15, no. 2 (2011): 561–67. http://dx.doi.org/10.5194/hess-15-561-2011.

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Abstract. Stemflow of xerophytic shrubs represents a significant component of water replenishment to the soil-root system influencing water utilization of plant roots at the stand scale, especially in water scarce desert ecosystems. In this study, stemflow of Caragana korshinskii was quantified by an aluminum foil collar collection method on re-vegetated sand dunes of the Shapotou restored desert ecosystem in northwestern China. Time domain reflectometry probes were inserted horizontally at 20 different soil profile depths under the C. korshinskii shrub to monitor soil moisture variation at ho
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47

Wang, X. P., Z. N. Wang, R. Berndtsson, Y. F. Zhang, and Y. X. Pan. "Stemflow of desert shrub and its significance in soil moisture replenishment." Hydrology and Earth System Sciences Discussions 7, no. 4 (2010): 5213–34. http://dx.doi.org/10.5194/hessd-7-5213-2010.

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Abstract. Stemflow of xerophytic shrubs represents a significant component of water replenishment to the soil-root systems influences water utilization of plant roots at the stand scale, especially for water scarce desert ecosystems. In this study, stemflow of Caragana korshinskii was quantified by aluminum foil collar collection method at re-vegetated sand dunes of the Shapotou restored desert ecosystem in Northwestern China. Meanwhile, time domain reflectometry probes were inserted horizontally at 20 different soil profile depths under the C. korshinskii shrub to monitor soil moisture variat
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48

Corbella, S., and D. D. Stretch. "Shoreline recovery from storms on the east coast of Southern Africa." Natural Hazards and Earth System Sciences 12, no. 1 (2012): 11–22. http://dx.doi.org/10.5194/nhess-12-11-2012.

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Abstract. Episodic extreme waves due to sea storms can cause severe coastal erosion. The recovery times of such events are important for the analysis of risk and coastal vulnerability. The recovery period of a storm damaged coastline represents a time when the coastline is most vulnerable and nearby infrastructure is at the greatest risk. We propose that identification of the beach recovery period can be used as a coastal management tool when determining beach usage. As a case study, we analyse 37 yr of beach profile data on the east coast of South Africa. Considering beach length and cross-se
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49

O'Neill, Sally, Jeff Short, and Mike Calver. "The distribution, habitat preference and population dynamics of the pale field-rat (Rattus tunneyi) at Edel Land, Shark Bay, Western Australia: the role of refuges and refugia in population persistence." Wildlife Research 48, no. 5 (2021): 444. http://dx.doi.org/10.1071/wr20005.

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Abstract ContextThe pale field-rat (Rattus tunneyi) is a small native rat that formerly had a wide distribution throughout Australia. It has suffered substantial range contraction since European settlement and is now largely absent from arid and semiarid Australia. In this biome, it was known to persist only at two Western Australian locations: Edel Land, on the south-western shore of Shark Bay, and islands off the Pilbara coast. AimsWe aimed to establish the extent of the species range at Edel Land, its habitat preference, the temporal stability of its populations with respect to rainfall, an
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50

van Hateren, Johannes Albert, Unze van Buuren, Sebastiaan Martinus Arens, Ronald Theodorus van Balen, and Maarten Arnoud Prins. "Identifying sediment transport mechanisms from grain size–shape distributions, applied to aeolian sediments." Earth Surface Dynamics 8, no. 2 (2020): 527–53. http://dx.doi.org/10.5194/esurf-8-527-2020.

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Abstract. The way in which sediment is transported (creep, saltation, suspension), is traditionally interpreted from grain size distribution characteristics. However, the grain size range associated with transitions from one transport mode to the other is highly variable because it depends on the amount of transport energy available. In this study we present a novel methodology for determination of the sediment transport mode based on grain size and shape data from dynamic image analysis. The data are integrated into grain size–shape distributions, and primary components are determined using e
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