Global Deserts and Their Geomorphological Diversity

Goudie, Andrew

doi:10.1007/978-1-4020-5719-9_2

Cited by 10 publications

(8 citation statements)

References 57 publications

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“…Deserts are found in every continent and they make up 33% of the total land area ( Figure 1 ). In this review, we are covering some of the major representative deserts that have been extensively studied over the past years, such as the Kalahari and Namib deserts in South Africa and the largest desert in the world, the Sahara in North Africa ( Goudie, 2009 ). In the Middle East, the Arabian Peninsula embraces one of the largest sandy deserts in the globe, namely the Empty Quarter ( Edgell, 2006 ) and the Negev ( Kaplan et al, 2013 ).…”

Section: Deserts Cover One-third Of the Earth’s Land Surfacementioning

confidence: 99%

Desert Microbes for Boosting Sustainable Agriculture in Extreme Environments

2020

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A large portion of the earth's surface consists of arid, semi-arid and hyper-arid lands. Life in these regions is profoundly challenged by harsh environmental conditions of water limitation, high levels of solar radiation and temperature fluctuations, along with soil salinity and nutrient deficiency, which have serious consequences on plant growth and survival. In recent years, plants that grow in such extreme environments and their naturally associated beneficial microbes have attracted increased interest. The rhizosphere, rhizosheath, endosphere, and phyllosphere of desert plants display a perfect niche for isolating novel microbes. They are well adapted to extreme environments and offer an unexploited reservoir for bio-fertilizers and bio-control agents against a wide range of abiotic and biotic stresses that endanger diverse agricultural ecosystems. Their properties can be used to improve soil fertility, increase plant tolerance to various environmental stresses and crop productivity as well as benefit human health and provide enough food for a growing human population in an environment-friendly manner. Several initiatives were launched to discover the possibility of using beneficial microbes. In this review, we will be describing the efforts to explore the bacterial diversity associated with desert plants in the arid, semi-arid, and hyper-arid regions, highlighting the latest discoveries and applications of plant growth promoting bacteria from the most studied deserts around the world.

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Section: Deserts Cover One-third Of the Earth’s Land Surfacementioning

confidence: 99%

Desert Microbes for Boosting Sustainable Agriculture in Extreme Environments

2020

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“…Karren are also common forms on inselberg escarpments and occur in other lithologies similar to those presented in granite. White (1988) and Goudie (2009) assert that, like limestones and dolomites, sandstones and granites can exhibit a range of forms of different sizes.…”

Section: Discussionmentioning

confidence: 99%

Origin and evolution of solutional features on granitic inselbergs

Santos,

Maia,

Travassos

et al. 2023

RBGeomorfologia

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Inselbergs are landforms shaped by a number of erosion processes. They can be characterized either by a predominance of dissolution features or fracturing and occasionally exhibit massive slopes. In this study we demonstrate the main structural mechanisms driving the formation of dissolution features, such as gnammas. In granitic rocks, mafic ellipsoidal enclaves can act as a starting point for differential erosion. The enclaves and their orientation control the early stages of dissolution features (ellipsoidal microcavities and gnammas). In the Pedra do Cruzeiro inselberg, located in Quixadá, northeastern Brazil, 99 enclaves were analyzed in a 230m SW-NE transect on the inselberg slope. The data show that the primary trend of enclave orientation (86E on average) coincides with the orientation of the majority (97%) of dissolution features in their first and second stages. In advanced erosion phases in which mega karren are developed, they are not solely controlled by preexisting structural patterns, attesting to the superimposition of the surface runoff of the inselberg over the structure (e.g., magmatic foliation and mafic enclave orientation).

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“…Numerous researchers including Goudie (2008a, b; Xu et al 2006) have dealt with the examination of sandstorms events and its impact on the land surface, utilizing GIS and Remote Sensing. Goudie (2009), discussed the first methodology relies upon the investigation of weather station information and representation of the spread of particulate matter in particular space in association with Dry Mid Temperature and Sub-Dry Temperature, particularly in the desert or semi-desert or zones. Measurable investigates exhibit that the event of sand–dust storms relate to a high degree of wind speed, which thus is firmly identified with land surface components; then again, a significant relationship between rain event and other atmospheric elements, for example, precipitation and temperature were not watched.…”

Section: Urban Emergency Managementmentioning

confidence: 99%

Evaluation of spatial analysis application for urban emergency management

Abdalla

2016

SpringerPlus

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BackgroundThis paper provides multidisciplinary scope to the utilization of geospatial data frameworks for urban disaster management with accentuation on particular events. The emergency management events presented in this review are universally known and represent high risk for different parts of the world.ResultsThe discussion starts with addressing the application issues related to how spatial analysis can be used intending to disaster management operations by characterizing its ease of use and impediments in managing the inquiries of vulnerability and hazard assessment. It also highlights best practices for the approaches to integrating spatial data for hazard mapping and risk perception.ConclusionsThe goal of this study is to give conceptual coverage to appropriate solutions for emergency preparedness and response, using spatial analysis and GIS. The paper emphasized that among different issues that may confront the use of spatial analysis, is the accuracy of data and time of processing, in addition to collective coordination of stakeholders working in the field. The findings of this research conclude that a challenge to possible risk reduction is furnishing disaster managers with access to information and methodologies that may help them in analyzing, evaluating and mapping hazard models.

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Global Deserts and Their Geomorphological Diversity

Cited by 10 publications

References 57 publications

Desert Microbes for Boosting Sustainable Agriculture in Extreme Environments

Desert Microbes for Boosting Sustainable Agriculture in Extreme Environments

Origin and evolution of solutional features on granitic inselbergs

Evaluation of spatial analysis application for urban emergency management

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