Sand Dunes - Science topic

From 2013 to 2019, I visited almost all deserts in Inner Mongolia for investigation, research, and experimentation. I conducted sand dune transport experiments in the Hunshandake Desert in Xilingol

The Gran Desierto de Altar, located in Sonora, Mexico, represents an arid region that offers an opportunity to study microbial life under extreme conditions. This study analyzed the bacterial diversity present in two distinct types of desert sediments: sand dunes (SDs) and salt crusts (SCs) by culture-dependent and culture-independent methods. Envi...

Between 2016 and 2021, the fish-salting tank 10 from Workshop 23, located in the Roman Ruins of Troia, was subjected to archaeological excavation. The workshop, situated in an area severely impacted by coastal erosion due to tidal activities in the Sado River estuary, remains in a significantly deteriorated state. Among the remains, tank 10, entire...

Introduction: Sand hills are also one of the most important facets of wind erosion Sometimes the speed and direction of the winds in the area can help a lot to understand the morphometric properties of sand dunes. The use of remote sensing over the past few decades as a tool to study the characteristics of sand dunes and study its changes over time...

The history and archaeology of Portrush sand dunes

Stachys maritima Gouan is a perennial herbaceous plant from the Lamiaceae family. It only grows on sand dunes, especially littoral ones. In Romania it is considered an endangered species, only found in few coastal areas of Tulcea and Constanța counties. Its vegetative organs (rhizome, aerial stem, leaf petiole and leaf blade) were harvested for ana...

This research endeavors to scrutinize the microtextures of quartz grains obtained from two distinct regions in Algeria: the beaches of Ain Temouchent Province along the Mediterranean coast and the sand dunes of Adrar Province in the southern part of the country. The analysis focuses on examining the shape and size of the quartz grains, with particu...

Aim: The aim of this paper is to experiment on how to afforest/re-vegetate desert land which occupies 27% of land area in China and to bring Environmental-Social-Governance (ESG) value to the livelihood of local tribesmen. Methodology: Cost effective way to achieve the goal has been established. Keys to success are propagated freely with an intenti...

Hydraulic fracturing is a pivotal technique in the development of offshore unconventional reservoirs. While current research has primarily focused on the longitudinal or transverse roughness of fractures, this study shifts the emphasis to their three-dimensional (3D) roughness characteristics. We present a quantitative analysis of proppant transpor...

Hydraulic fracturing is the primary method used for oilfield stimulation, and the migration and settlement pattern of proppant plays a crucial role in the formation of high conductivity propping fractures in the reservoir. This study summarizes two growth modes of sand dune: the 'overall longitudinal growth' mode and the 'push growth along fracture...

Eremurus M. Bieb. Род Eremurus относится к семейству Asphodelaceae и объе-диняет в целом более 70 видов, являющихся многолетними травами с веретенообразно утолщенными корнями и прикорневыми листьями. Во флоре Казахстана род Eremurus представлен 15 видами, из них 2 эндемика. Ареал рода охватывает Западную Азию и Ирано-Туранскую область, причем наибо...

We review the main processes that drive the morphodynamics of dunes, i.e. their growth in height, migration and elongation, and emphasise the contribution of experiments to the understanding of these mechanisms. The main control parameters are the sediment flux $Q$ and the saturation length $L_{\rm sat}$ associated with the spatial relaxation of th...

This short article aims to update the geographical distribution of a lizard species, Liolaemus arambarensis (Iguania-Liolaemidae), which is microendemic and classified as endangered (EN) according to IUCN criteria. Expeditions have been conducted to locate this lizard since 2005, yet it has never been found in a location previously considered to be...

Sistemi lagunor i Kune-Vainit, ndodhet në pjesën veriore të bregdetit të Adriatikut Shqiptar, në perëndim të fushës së Lezhës, i formuar nën ndikimin e lumenjve Drin dhe Mat. Sipërfaqja e përgjithshme është rreth 44 km2 nga të cilat 12.5 km2 (rreth 30%) janë të mbuluara me ujë, pjesa tjetër përbëhet nga këneta, kallamishte, pyje dhe shkurre, dhe du...

During a recent expedition of the Eurasian Dry Grassland Group in the steppes of southern Ukraine, we discovered on sand dunes a new sterile crustose aspicilioid lichen with rhizomorphs. It is described here as new to science under the name Circinaria ucrainica ( Megasporaceae ). The new combination Circinaria reptans (Looman) Khodos. & Darmostuk i...

During the process of dune vegetation restoration, understanding how grazing disturbance affects the relationship between plant species is a critical issue in ecological studies. However, there is insufficient evidence on the changes in the interaction between dominant shrubs and understory vegetation under grazing behavior. We aimed to study how g...

Habitat association has been proposed to affect evolutionary dynamics through its control on dispersal propensity, which is considered a key trait for lineage survival in habitats of low durational stability. The Habitat Constraint hypothesis predicts different micro- and macroevolutionary patterns for stable versus dynamic habitat specialists, but...

Sand dunes protect the most important economic and ecologically critical landscapes from coastal hazards (storms and high-tide flooding). The characteristics of the dune affect their protective ability. This paper qualitatively and quantitatively assesses the relationships between pre-and post-storm conditions for vegetation and the morphology of a...

In Niger, artisanal and scale mining contributes to reducing the poverty of populations in rural areas by injecting considerable monetary income but creates many environmental problems. This study aims to analyze the environmental impacts of artisanal and small-scale mining at the Aouzegueur mining sector, with a view to helping reduce the environm...

This present study has been designed to develop an Antifouling agent to minimize the attachment of fouling organisms on the submerged substratum. In order to analyze the leaf extracts of reputable species, such as Ipomoea pescaprae, (sand dune plants) and Sesuvium portulacastrum, Batis maritima (salt marsh), an attempt was undertaken. Methanolic ex...

Background Soil organic phosphorus (P) and its chemical nature change markedly during long-term pedogenesis, but how variation in ecosystem water balance and associated differences in vegetation impact such transformations remain unclear. Methods We addressed this by using solution ³¹ P-nuclear magnetic resonance ( ³¹ P-NMR) spectroscopy to assess...

We report the first observation of the psammophyte plant species Pancratium maritimum L. (Amaryllidaceae) in the Friuli Venezia Giulia region, Italy. Four adult individuals were observed in spring 2023 on the residual dunes of Lignano Sabbiadoro municipality behind a beach resort. Although we lack genetic analysis to determine its provenance, consi...

Background Desertification is the most severe environmental problem in arid and semi-arid regions and has caused great economic loss every year. However, artificial sand fixation barriers function on sand fixation for only 10-20 years. Searching for a native species with long-term sand fixation effect and strong environmental adaptive capacity, and...

Greipsson, S.; Stover, K.; Whitney, S., and McElroy, T., 2024. Arbuscular mycorrhizal fungi and soil fungi associated with Uniola paniculata L. (sea oats) on restored and natural sand dunes on the Georgia Coast, U.S.A. Journal of Coastal Research, 40(5), 875-886. Charlotte (North Carolina), ISSN 0749-0208. Coastal sand dunes are fragile ecosystems...

The Lower Ordovician Armorican Sandstone Formation of northwestern France is renowned for its trace-fossil content. Outcrops are typically found in coastal cliffs and inland quarries and large bed surfaces may be exposed in places, which is the case at Bagnoles de l’Orne (Normandy). Large bed surfaces with trace fossils allow us to understand the p...

Context . Aeolian-like surface features observed on small Solar System bodies have piqued interest in their underlying formation mechanisms. Understanding the evolution of fluid-solid interactions is crucial for elucidating the nature of cometary activity. Aims . We established a resolved fluid-particle simulation approach and implemented it into o...

Understanding aerodynamic entrainment, a critical process in wind-blown sand dynamics, remains challenging due to the difficulty of isolating it from other mechanisms, such as impact entrainment. Aerodynamic entrainment initiates the movement of surface particles, influencing large-scale processes like sediment transport and dune formation. Previou...

The south region of Algeria is characterized by a wide surface, a scattered population and a very small ratio of road length per habitant. To allow the development of agricultural, industrial and touristic activities between different cities in the south of Algeria, it is necessary to maintain and to develop the road infrastructure. However the dev...

The Sistan Plain has four sand corridors that have caused numerous problems for its inhabitants due to wind erosion. The lack of water resulting from dam construction and climate change has made it necessary for these people to relocation. Instead of stabilizing the active sand dunes, it is more cost-effective to relocate a limited population to vi...

The Hunshandake Sandy Land is one of the largest sandy areas in China and the closest source of sand dust to the Beijing and Tianjing areas. Sand fixation by vegetation is considered the most efficient strategy for sand control and sustainable development, so clarifying the vegetation coverage and plant adaptation characteristics in the Hunshandake...

Understanding past landscape dynamics of the European Arctic is crucial for predicting how current and future climate changes will affect this sensitive region. Aeolian sand dunes serve as important climate archives, with their shape, size, and orientation offering insights into historical wind patterns, sediment sources, and landscape stability....

The main objective of this paper is to delineate the subsurface structures, especially faults, in Al Haddar, Wadi Al-Dawasir area which is a part of the Sulayyimah Quadrangle, South Saudi Arabia using non-linear seismic refraction tomographic inversion. No major structures or faults are observed from the surface geological studies, while most of th...

Surface roughness significantly influences turbulence structures, affecting skin friction and velocity profiles. Precisely modeling the roughness effects is essential for reliable numerical simulation results in various engineering applications. This paper introduces enhancements to the two-layer k-epsilon ( k − ε) turbulence model, incorporating s...

Keywords Saline-alkali soil, arbuscular mycorrhizal (AM) fungi, PGPR, degraded ecosystems ABSTRACT Screening of AM fungi on plants growing on saline-alkali soil of southwest coastal of Kumta (Karnataka) was undertaken. Field experiments were conducted to know the species in this region after supplying various reclamative amendments. Results reveale...

Coccoloba uvifera L. (Polygonacaeae), named also seagrape, is an ectomycorrhizal (ECM) Caribbean beach tree, introduced pantropically for stabilizing coastal soils and producing edible fruits. This review covers the pantropical distribution and micropropagation of seagrape as well as genetic diversity, functional traits and use of ECM symbioses in...

Utilizing coastal land for agriculture presents challenges such as low water content, high soil salinity, and low organic compound content. To support plant growth under these conditions, biofertilizers composed of plant growth promoting Rhizobacteria (PGPR), especially those inhabiting coastal areas, are needed. The Parangkusumo sand dunes on the...

Despite the significant biodiversity in the Cerrado, the process of occupation, subsequent economic cycles, and intensification of agriculture in a predatory manner have caused profound alterations in this biome. This study analyzed changes in land use and land cover in the Cerrado of Mato Grosso do Sul between 1985 and 2022 by mapping and also inv...

Toe fringes are a key innovation for sand dwelling lizards, and the relationship between toe fringe function and substrate properties is helpful in understanding the adaptation of lizards to sand dune environments. We tested the sand burial performance of Phrynocephalus mystaceus on different sand substrates with toe fringe manipulation, with the a...

The materials constituting the pavement bodies, until today, have been limited to certain so-called noble materials (rolled sands, aggregates, etc.), but these are in the process of being exhausted under the effect of intensive exploitation and the scarcity of quality quarries. With the objective of preserving the deposits of aggregates in the proc...

Sand dune morphology is indicative of complex system interactions at a wide range of spatial and temporal scales that govern dune topographic structure. We created an object-oriented topographic framework based on slope attitude, curvature, and contextual analysis to map and characterize sand dune morphology at White Sands National Park, New Mexico...

A model-based surface fluvial erosion and deposition approach was adapted to Martian conditions to forecast the potential locations for shallow subsurface sampling by the Rosalind Franklin ExoMars rover at Oxia Planum. While remote and on-site images show only the surface visible features, former fluvial-related accumulation sites might be hidden....

Natural England are delighted to announce the launch of the much anticipated second edition of the Dynamic Dunescapes Sand Dune Manager’s Handbook. This update has been written to support site managers and landowners to improve the condition of sand dunes across the UK and protect the rare and often unique species that have adapted to live in sand....

The inselbergs of the Namib Desert serve as biodiversity refugia in a matrix of largely depauperate gravel plains or sand dunes. Despite their ecological importance and expected species richness, the biota of most Namib inselbergs has not been surveyed. An isolated and previously unexplored inselberg archipelago in the northeastern corner of the Na...

Household and similar wastes are increasingly being produced in public landfills. Their decomposition requires very high energy consumption, releasing harmful carbon dioxide gases that pollute the air. Therefore, it is necessary to take effective measures to ensure their disposal in an environmentally sustainable and economically feasible manner. I...

Background and aims Biological soil crusts (biocrusts) play a vital role in desert ecosystems. The sand-dune slope position crucially affects biocrust growth and development. This paper investigates the effect of slope position on nonstructural carbohydrates (NSCs) in biocrusts in the Gurbantunggut Desert. Methods Samples were collected from the e...

Background and aims Inland sand dunes constitute Natura 2000 habitat that has become a priority to ensure biodiversity protection and habitat heterogeneity at the landscape scale; however, without proper management, spontaneous succession leads to overgrowing of trees and thus to habitat degradation. Understanding succession processes, relationship...

The role of runoff in providing nutrients to runon loci in deserts was not extensively explored. Here we report 2 years of measurements of the chemical composition of rain and runoff (three events for each year, which correspond to the long-term runoff events) in plots that were constructed over four biocrust types in the Negev Desert, Israel. The...

Calligonum polygonoides is the keystone and dominating species of this scrubland area. It also ranked as climax species with efficient adaptation and resistance to various abiotic stresses of its native ecosystem. This plant species is also known as a dominant biomass and phytochemical producer with a range of different phytochemicals including cal...

Grain sizes of Martian sand dunes are critical sedimentological data on sand provenance and transport pathways. Thermal inertia values are used to characterize the grain sizes of dune sand. Most early characterizations involved single dune fields. Recent work based on global data sets has provided more wide‐spread dune sand locations, though these...

In arid and Saharan zones, drought and human activities accentuate the risk of degradation of pre-desert rangelands. Some plants disappear, while others persist and adapt. In this study, we aimed to list the plants that can grow in a sandy environment and investigate their distribution levels and effect on sand dunes. We conducted vegetation invent...

Coastal areas are among the planet's most dynamic yet vulnerable environments, the shape of sand dunes being typically modeled by two sets of forces: the relatively constant action of wind and waves and the disturbances caused by infrequent but powerful storms. These meteorological events affect the plant communities, but can also play an important...

Pterygoneurum kozlovii Laz., Tortella flavovirens (Bruch) Broth., and Tortula pallida (Lindb.) R.H.Zander new to Austria Abstract: Zechmeister, H. G. & Kropik, M. 2024. Pterygoneurum kozlovii Laz., Tortella flavovirens (Bruch) Broth., and Tortula pallida (Lindb.) R.H.Zander new to Austria.-Herzogia 37: 62-72. The Austrian bryophyte flora is histori...

Modern mining operations are relying on the integration of complex datasets to predict and control impacts on the mining process, holistically, from resources extraction to the site environmental management. The Grande Côte Operation (GCO) Ti-Zr deposit is located on the Northern coast of Sénégal (Figure 1A). As of 1st of January 2024 total resour...

Many drivers are responsible for dunefield morphology and changes from mobile to stable states, with surface and subsurface records potentially registering past drivers acting over sand dunes. Phases of aeolian transgressive sand sheets (TSS) are recorded in an extensive stretch of the Holocene barrier of the southernmost coast of Brazil from the m...

Effect the silica sand percentage as subtitution of fine agregate on the concrete compressive strength N Nursyamsi and I Maulana-Low Density, High Compressive Strength: Abstract Sand dunes are widely spread in Missan Governorate, Southeastern Iraq in many areas including; Manziliyah, Khazina, Zubadiate, and Chailat. X-ray diffraction (XRD) results...

Rhyssemus Mulsant, 1842, represents one of the largest genera in the tribe Psammodiini, comprising approximately 170 species to date. This group is nearly cosmopolitan, excluding the Neotropical region, with 59 species recorded in the Palearctic region. On the Korean Peninsula, only one species, Rhyssemus koreanus Stebnicka, 1980 was recorded from...

The tourism sector in Bantul Regency has so far only highlighted ecotourism-based tourist destinations in the form of beaches, pine forests, and sand dunes. Sedayu Karst Tubing is part of an ecotourism-based tourist destination, but the number of visitors is not as many as other ecotourism-based tourist destinations in Bantul Regency. Therefore, en...

The Baltim area is located in the north-central part of the Delta. It was part of Lake Burullus, whose surface is mostly flat and has little slope, except for areas of sand dunes. The Baltim area differs in its current state from what it was in previous periods, as its features changed to account for human uses on physical phenomena that are headin...

This technical bulletin describes the various aspect of Ladakhi double-hump camel and future prospect on breed conservation. Double hump camel or Bactrian camel (Camelus bactrianus) of Ladakh are well adapted to hypoxic and hypobaric condition, severe cold and stressful climate of Ladakh. In India, double hump camel is concentrated in picturesque s...

The eastern Agadir (Morocco) was selected for the urban expansion. However, it faces challenges owing to its location within an alluvial basin of weak and heterogeneous sediments, compounded by the scarcity of geotechnical data. This study aimed to create the first geotechnical zoning map of the area to support informed urban planning. Geophysical...

Glehnia littoralis is a perennial herb found in coastal sand dunes throughout East Asia. This herb has been reported to have hepatoprotective, immunomodulatory, antioxidant, antibacterial, antifungal, anti-inflammatory, and anticancer activities. It may be effective against hepatocellular carcinoma (HCC). However, whether this has been proven throu...

Sporobolus cryptandrus is a C4 perennial bunchgrass native to extensive areas of North America. As a non-native species, it has been reported from several continents, and it has been described as a transformer species in sand steppes of Central and Eastern Europe. However, its spreading ability across the landscape and within habitats has not been...

Soil is a basic material used in various engineering applications, including construction, geotechnical engineering, and environmental remediation. In many areas, the available native soil may not have the desired engineering properties, necessitating the use of soil amendments or compounds. This paper studies the Studies in Engineering and Exact S...

الأهداف: هدفت الدراسة إلى رصد ونمذجة الكثبان الرملية بالنفود الكبير بمدينة حائل، وتعرُّف خصائصها، وأنواعها ومورفولوجيتها، ونشأتها، والعوامل المؤثرة، وتغيراتها عبر الزمن، ومدي خطرها، وكيفية تفاديها. المنهجية: اعتمد الباحث باعداد الدراسة على تقنيات الاستشعار عن بعد، ونظم المعلومات الجغرافية، وذلك باعتماد مرئيات فضائية لفترتين: الأولى 1988م من المستشع...

The aerodynamic loads of a sedan experience significant fluctuations when passing by a sand dune at the roadside under crosswinds, which can easily cause yawing and overturning. Computational fluid dynamics (CFD) methods, based on different turbulence modeling approaches, yield different aerodynamic results for sedans. This study aims to investigat...

The surface of Antarctica is continuously shaped by erosion, blowing snow and deposition, resulting in diverse aeolian bedforms akin to those observed in subtropical sand deserts. However, although dunes are universally recognized as a climate and environmental proxy, the properties of snow dunes are not well understood. Here, using satellite image...

This study focuses on the mechanical, thermal and durability behaviour of bio-composite material use in the construction sector. The incorporation of bio-waste, such as palm fibers, in the cement matrix shows an interesting role. They are available at low prices and are renewable and environmentally friendly raw materials. In this work, palm fibers...

Ants play an indispensable role as ecosystem engineers, and their communities can react sensitively to environmental changes. They also inhabit the areas of Podunajská nížina and Záhorská nížina, which together represent one of the largest and most diverse areas of sand dunes in Central Europe. The sandy nature of the substrate in these areas gives...