General Conclusions – Sand Dune Deserts, Desertification, Rehabilitation and Conservation

Breckle, Siegmar‐W.; Yair, Aaron; Veste, Maik

doi:10.1007/978-3-540-75498-5_30

Cited by 6 publications

(5 citation statements)

References 26 publications

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“…In this experiment, the horizontal aeolian sediment flux decreased with increasing vegetation coverage by a negative exponential function (Fig. 11), which was consistent with field results of Lancaster and Baas (1998) and Breckle et al (2008). The total horizontal aeolian sediment flux at site C with Artemisia ordosica coverage of 29% during the period from 2 June 2018 to 6 June 2019 was 10.54 kg/m, which was less than 1% of that at site A with Artemisia ordosica coverage of 2%.…”

Section: Effect Of Vegetation On Wind Erosionsupporting

confidence: 90%

“…The relationship between vegetation coverage and sediment mass flux in the wind tunnel study (Burri et al, 2011) is similar to that found for salt grass (Distichlis spicata) by Lancaster and Baas (1998). The field results in the Nizzana area indicated that the effect of vegetation coverage on sand transport in the interdune corridor can be well described by an exponential function; transported mass in areas with 17% vegetation cover is less than 1% of the transported mass in non-vegetated areas and is 8% of the transported mass in areas with 9% vegetation cover (Breckle et al, 2008). Yan et al (2013) indicated that for the Chinese semi-arid steppe, vegetation coverage should be greater than 35% to effectively protect fine particles and nutrients.…”

Section: Effect Of Vegetation On Wind Erosionmentioning

confidence: 98%

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Wind-proof and sand-fixing effects of Artemisia ordosica with different coverages in the Mu Us Sandy Land, northern China

Pang

Jia

et al. 2022

J. Arid Land

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Wind erosion is a key global environmental problem and has many adverse effects. The Mu Us Sandy Land of northern China is characterized by an arid climate, where vegetation patches and bare sand patches are usually distributed mosaically, and aeolian activities occur frequently. Vegetation plays a significant role in controlling wind erosion. Artemisia ordosica is the most dominant native plant species in the Mu Us Sandy Land. It is urgent to study the wind-proof and sand-fixing effects of Artemisia ordosica in the Mu Us Sandy Land. This study analyzed the wind-proof and sand-fixing effects of Artemisia ordosica based on the field data of wind regimes, aeolian sediment transport, and surface change of Artemisia ordosica plots with four coverages (denoted as site A, site B, site C, and site D) in the Mu Us Sandy Land during the period from 1

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Section: Effect Of Vegetation On Wind Erosionsupporting

confidence: 90%

Section: Effect Of Vegetation On Wind Erosionmentioning

confidence: 98%

Wind-proof and sand-fixing effects of Artemisia ordosica with different coverages in the Mu Us Sandy Land, northern China

Pang

Jia

et al. 2022

J. Arid Land

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“…The lower part of the crust has a vesicular structure. The distribution of vegetation is mainly the perennial Chenopodiaceous species, Anabasis articulate in the inter-sand dune valley ( Breckle et al ., 2008 ).…”

Section: Methodsmentioning

confidence: 99%

“…Inter-sand dune desert sites are known to be among the most prominent locations for generating playa surfaces characterized by compact floors, salt pavements, carbonate surfaces, and a high percentage (50 % or more) of clay lacking microbiotic crusts ( Breckle et al ., 2008 ; Yu et al ., 2012). Most of the playa area lack vegetation cover and are classified as a Solonchaks soil type which is known as a typical soil profile with a takyric surface ( Pen-Mouratov et al ., 2011 ).…”

Section: Introductionmentioning

confidence: 99%

Vertical distribution of soil free-living nematode in a playa habitat in the North-Western Negev desert, Israel

Pen-Mouratov

Steinberger

2020

Helminthologia

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SummaryIn order to investigate the vertical distribution of soil nematode community under a playa area in the Nizzana inter-sand dune area in the north-western Negev Desert of Israel, soil samples were collected from 0 – 10, 10 – 20, 20 – 30, 30 – 40, and 40 – 50 cm depths in the playa and loessial plain area (as control) during the dry and wet seasons. Each of soil samples was determined for soil moisture, organic matter concentration, electrical conductivity, and nematode community structure and biodiversity. The results revealed that soil moisture, organic matter, electrical conductivity, total nematode abundance and trophic groups were significantly influenced by sampling positions (P < 0.0001) and depths (P < 0.05) and significant interaction effect of position and depth (P < 0.05) was also found. Total number of nematodes in the playa area ranged from 1 to 15 individuals per 100 g dry soil, whereas they ranged from 60 to 631 individuals per 100 g dry soil in the loessial plain area. The greatest nematode number was found in 0 – 10 cm soil depth and the lowest nematode number was found in 40 – 50 cm soil depth. Total number of nematodes, bacterivores, fungivores, plant parasites and omnivores-predators were significantly (P < 0.05) greater in the loessial plain area than that in the playa area in all sampling depths under the dry and wet seasons. Total thirteen genera were found in the playa area, with Acrobeloides as the dominant genus, whereas there were fifty-five genera, with Acrobeles as the dominant genus in the loessial plain area. Nematode ecological indices, such as fungivores/bacterivores ratio (F/B), nematode channel ratio (NCR), trophic diversity (T), Shannon Index (H’), genus dominance (λ), species richness (SR), maturity index (MI), modified maturity index (MMI), Enrichment Index (EI) and Structure Index (SI) were significantly (P < 0.01) differentiated between sampling locations. As conclusion, soil free-living nematode inhabited mostly the upper soil layers (0 – 20 cm) and the number of nematode had gradually decreasing trend with soil depths increasing in the playa area. Moreover, each soil layer had a little nematode abundance and community diversity in the playa area in contrast to loessial plain area during the dry and wet seasons. Sampling sites and depths significantly effected on soil properties, nematode abundance and trophic groups, but nematode ecological indices were affected only by sampling sites.

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“…Desert sand dunes comprise up to 30% of all desert areas worldwide, and the vast majority of the active sand dunes are in deserts (Breckle et al., 2008; Pye & Tsoar, 2009). Dunes comprise three main sections: (1) stabilized areas, either owing to dense vegetation or soil crust; (2) shifting sand open areas; and (3) semi‐stabilized areas between the former two (Kutiel et al., 2004; Tsoar, 2005).…”

Section: Introductionmentioning

confidence: 99%

Activity and habitat use of a dune gecko and its spatial and temporal correlation with other animals on dunes

et al. 2023

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Compared with other desert habitats, desert dunes are relatively rich in species, some of which are unique to such habitats. To better understand the interspecific interactions among species in the dunes, their ecology, and their behavior, we studied the habitat use of Stenodactylus petrii. This species is common in desert dunes in Israel and North Africa, and it is a mesopredator, interacting with both its predators and prey, thus affecting populations of both higher and lower trophic levels. We performed an experiment to see whether these animals spend more time in vegetated or open habitats. Our experiment demonstrated that S. petrii individuals moved twice faster out of open dune areas than out of microhabitats simulating desert vegetation. Yet, observations of the gecko's tracks suggest that it is similarly present in open areas and around bushes, necessitating further studies. We also reveal that this nocturnal species is more active earlier in the night than later, and more active in late summer (August) than earlier (June–July). We examined which other co‐occurring animals are active together with the studied gecko in time or space. The spatial and temporal activity patterns of S. petrii are negatively correlated with the activity patterns of gerbils, suggesting that their activity time and microhabitat preference differ. The spatial activity pattern of S. petrii is positively correlated with Tenebrionid ground beetles, suggesting a shared microhabitat preference. However, neither the temporal nor the spatial activity of the gecko is correlated with that of vipers, which are its potential predators. Future studies of S. petrii's natural history are important to understand how expected habitat change (e.g. dune stabilization) should affect it.

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General Conclusions – Sand Dune Deserts, Desertification, Rehabilitation and Conservation

Cited by 6 publications

References 26 publications

Wind-proof and sand-fixing effects of Artemisia ordosica with different coverages in the Mu Us Sandy Land, northern China

Wind-proof and sand-fixing effects of Artemisia ordosica with different coverages in the Mu Us Sandy Land, northern China

Vertical distribution of soil free-living nematode in a playa habitat in the North-Western Negev desert, Israel

Activity and habitat use of a dune gecko and its spatial and temporal correlation with other animals on dunes

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