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Abstract: Rawls famously argued against meritocratic conceptions of distributive justice on the grounds that the accumulation of merit is an unavoidably lucky process, both because of differences in early environment, and innate talents. Thomas Mulligan (2018a) has recently provided a novel defense of meritocracy against the “luck objection”, arguing that both sources of luck would be mostly eliminated in a meritocracy. While a system of fair equality of opportunity ensures that differences in social class or early environment do not lead to differences in the accumulation of merit, Kripke’s essentiality of origin thesis means that our genetic endowments, and thus our innate talents, could not have been any other way. But if we could not fail to have our innate talents, Mulligan argues, then it is not a matter of luck that we have them, and so the merits we accumulate on their basis are not so luck-dependent. This paper argues that Mulligan’s appeal to the essentiality of origin thesis fails to rescue meritocratic conceptions of distributive justice from the luck objection for two reasons. First, even granting essentiality of origin and fair equality of opportunity, the contingencies of the market and the social environment mean that having some innate talents is far luckier than having others. And second, the appeal to essentiality of origin misses the underlying motivation for the luck objection, and ignores the intimate connection between desert and responsibility.

Abstract Background The knowledge about the species of a habitat (both resident and transient/dominant and rare) is a vital step to plan the conservation measures. Being generalist predators, spiders help controlling the population of their prey and maintain ecosystem stability. This makes spiders excellent bio-indicators for assessing the impact of anthropogenic disturbance factors on natural ecosystems (De, Siliwal, Uniyal and Hussain in Trop. Ecol. 63: 1–7, 2021). The aim of this study was to assess the dominance structure and constancy of spiders in three different habitats (Sand dunes, Riparian and Rocky) of the Thar desert. Study was conducted from March 2017 to February 2019 covering all seasons. Results The eudominant species in sand dunes and rocky desert belonged to the family Thomisidae. These species were Tmarus sp. 1 and Tmarus kotigeharus Tikader, 1963, respectively. There were two eudominants in Riparian habitat (Oecobius putus O. Pickard-Cambridge, 1876 and Menemerus bivittatus (Dufour, 1831)). Through the analysis of constancy of all the species in the Thar desert, it was revealed that three species were constant in all the three habitats. The number of accessory and accidental species was far higher than constant species in all the habitats. Conclusions The number of accessory and accidental spider species in all habitats was far higher than constants due to the unstability of spider population. Therefore, this study highlights the necessity for conservation of these habitats of the Thar desert.

Abstract Ecological resource availability is crucial for the persistence and survival of local desert animal communities. Dryland resources such as shrubs and burrows positively benefit animal species by mitigating harsh abiotic factors and providing habitat. Understanding the role of native shrubs, many of which serve as foundation species within desert regions, as well as the function of underground burrows as resources, provides insights into habitat utilization. In this study, we seek to better understand the co-occurrence of these two resources as a first step in quantifying key patterns locally and regionally in drylands. We tested whether the presence of burrows increased with the density of foundational shrubs near the burrows at two scales—within a 5 m radius of every burrow recorded and at the site level—defined as discrete ecological areas. We performed fieldwork across 31 sites within the arid and semiarid regions of Central California. We used a combination of burrow field surveys and satellite imagery to document both vertebrate animal burrow frequencies and shrub densities. Additionally, the accuracy of the shrub data was verified through ground truthing. Both fine-scale and site-level shrub densities positively predicted the relative likelihood of burrows and the frequency of burrows, respectively. The existence of two highly utilized dryland resources and the relationship between them signal that areas abundant in both resources will likely better support resident animal species. This finding underscores the significance of incorporating both shrub density and burrow frequency in studies of habitat interconnectivity and quality. The co-occurrence patterns of these resources will support novel habitat management and conservation strategies designed around both conservation and restoration efforts.

Iraq's reproductive and developmental seasons for the frog vary depending on the region and ecological, geographical, and climatic factors, but they always take place from February to April. This study set out to observe the impact factor of water temperature on frog embryo development and tadpoles' development in the frog genus Bufotes variabilis. In central Iraq (semi-arid zones), temperatures are high, and precipitation is low; the temperature plays an important role in the timing of metamorphosis, especially in amphibian populations of Iraq. In the three months of February, March, and April, a hand net was used to gather a total of 100 eggs from the bank of the Babylon River and divided into three groups, tadpole's total snout to vent length (SVL) at stages 25, 35, and 46 were measured during this period. This group experiences varying stages when the water temperature varies from 10°C in February to 25°C in April. Histologically, frog skin is composed of an epidermal and dermal layer. The epidermal layer comprises a mucous-stratified squamous epithelium (keratinized or non-keratinized) with three strata of keratinocytes (basal, intermediate, and apical). The dermis is divided into two strata, a loose connective tissue stratum underneath the epidermis that contains melanin pigment cells, blood vessels, mucous and granular glands, and a dense irregular connective tissue stratum rich in crisscrossed collagen fibers. Histological specimens were taken to study the mucous and granular glands of the frog's skin during the same period using rotund methods; the skin showed changes in mucous and granular gland diameter in April is larger than that in February. We registered in dorsal pectoral skin the mucous gland I, spherical in shape and constituted by a single layer of relatively tall prismatic secretory cells with basal nuclei. While the Mucous gland II is constituted of low cuboidal secretory cells with middle or basal nuclei surrounding a somewhat demanding lumen. In conclusion, the temperature plays a big role in tadpole size and time of metamorphosis as well as skin changes.

Background: Despite the exposure to arid environmental conditions across the globe ultimately hampering the sustainability of the living organism, few plant species are equipped with several unique genotypic, biochemical, and physiological features to counter such harsh conditions. Physiologically, they have evolved with reduced leaf size, spines, waxy cuticles, thick leaves, succulent hydrenchyma, sclerophyll, chloroembryo, and photosynthesis in nonfoliar and other parts. At the biochemical level, they are evolved to perform efficient photosynthesis through Crassulacean acid metabolism (CAM) and C4 pathways with the formation of oxaloacetic acid (Hatch-Slack pathway) instead of the C3 pathway. Additionally, comparative genomics with existing data provides ample evidence of the xerophytic plants' positive selection to adapt to the arid environment. However, adding more high-throughput sequencing of xerophyte plant species is further required for a comparative genomic study toward trait discovery related to survival. Learning from the mechanism to survive in harsh conditions could pave the way to engineer crops for future sustainable agriculture. Aim of the review: The distinct physiology of desert plants allows them to survive in harsh environments. However, the genomic composition also contributes significantly to this and requires great attention. This review emphasizes the physiological and genomic adaptation of desert plants. Other important parameters, such as desert biodiversity and photosynthetic strategy, are also discussed with recent progress in the field. Overall, this review discusses the different features of desert plants, which prepares them for harsh conditions intending to translate knowledge to engineer plant species for sustainable agriculture. Key Scientific Concepts of Review: This review comprehensively presents the physiology, molecular mechanism, and genomics of desert plants aimed towards engineering a sustainable crop.

Ants (Hym., Formicidae) have been recognized as vital components of arid ecosystems. Determining the diversity patterns of ants and the ecological factors behind these patterns is expected to improve our understanding of the functioning of arid ecosystems. Here, we explored patterns of ant species diversity and community composition along an elevational gradient (800 to 2800 m) in the arid area of Central Iran. The elevational gradient in ant diversity and the effects of environmental factors on various indices of ant diversity and species composition were investigated using generalized linear mixed models and variance partitioning analysis. We recorded 34 ant species of 12 genera and 8 tribes from 120 surveyed quadrats. Climate variables were the most important predictors of ant community structure. Indices of ant alpha diversity including Hill numbers and taxonomic diversity increased with elevation. Hill numbers were negatively influenced by temperature, while they were positively affected by precipitation. The observed diversity pattern could be explained by the diversity-productivity hypothesis. In our study area, the maximum primary productivity and consequently the maximum species diversity occurred at high elevations, where precipitation is high and temperature is lower than the extremes that could limit plant productivity. Ant assemblages are expected to become increasingly composed of warm-tolerant species in response to warmer and drier conditions driven by climate change. The distribution of species with lower heat tolerance will be limited to high-elevation areas in Central Iran. These areas could act as refuges for ants and should be considered priorities for conservation

Abstract: The orthodox view of the metaphysics of desert is that desert is a triadic relation that obtains between a subject, an object and a desert base. Not only is this view lacking in motivation, but conceiving of the desert base as part of the desert relation renders the concept of desert incoherent. Instead, desert should be thought of as a dyadic relation between a subject and an object, where desert bases are simply the grounds for dyadic desert facts.

Background: The knowledge about the species of a habitat (both resident and transient/dominant and rare) is a vital step to plan the conservation measures. Being generalist predators, spiders help controlling the population of their prey and maintain ecosystem stability. This makes spiders excellent bio-indicators for assessing the impact of anthropogenic disturbance factors on natural ecosystems (De, Siliwal, Uniyal and Hussain in Trop. Ecol. 63: 1–7, 2021). The aim of this study was to assess the dominance structure and constancy of spiders in three different habitats (Sand dunes, Riparian and Rocky) of the Thar desert. Study was conducted from March 2017 to February 2019 covering all seasons. Results: The eudominant species in sand dunes and rocky desert belonged to the family Thomisidae. These species were Tmarus sp. 1 and Tmarus kotigeharus Tikader, 1963, respectively. There were two eudominants in Riparian habitat (Oecobius putus O. Pickard-Cambridge, 1876 and Menemerus bivittatus (Dufour, 1831)). Through the analysis of constancy of all the species in the Thar desert, it was revealed that three species were constant in all the three habitats. The number of accessory and accidental species was far higher than constant species in all the habitats. Conclusions: The number of accessory and accidental spider species in all habitats was far higher than constants due to the unstability of spider population. Therefore, this study highlights the necessity for conservation of these habitats of the Thar desert. [ABSTRACT FROM AUTHOR]

Soil seed banks help maintain species diversity through temporal storage effects and function as germination pools that can optimize fitness across varying environmental conditions. These characteristics promote the persistence of native plant communities, yet disturbances such as fire and associated invasions by non-native species can disrupt these reserves, fundamentally altering successional trajectories. This may be particularly true in deserts, where native plant communities are less adapted to fire. While studies of fire effects on desert plant communities are not uncommon, information regarding the short- and long- term effects of fire on seed banks is less available. To better understand the influence of fire and invasive species on desert seed banks, we investigated soil seed bank biodiversity from 30 wildfires that burned between 1972 and 2010 across the Mojave Desert ecoregion of North America. We assessed how characteristics of fire regimes (frequency, time since fire, and burn severity) interacted with climate and invasive plants on measures of a-, p-, and g- diversities. Because p-diversity is a direct measure of community variability and reveals important information about biodiversity loss, we further examined the nestedness and turnover components of p-diversity. Mean a- and ^-diversities were generally higher for burned locations than in unburned reference sites, however individual fire variables had little influence on patterns of seed bank diversity. Burned area seed banks tended to be dominated by non-native invasive species, primarily two grasses, (Bromus rubens, Bromus tectorum), as well as an invasive forb (Erodium cicutarium). The most striking pattern we observed was a collective sharp decline in a-, p-, and g-diversities with increased invasive species dominance, indicating the homogenization of seed bank communities with the colonization of invasive species after fire. Evidence of homogenization was further supported by reduced turnover and increased nestedness in burn areas compared to reference areas indicating potential biodiversity loss. Our findings highlight how biological processes such as plant invasions can combine with disturbance from fire to alter patterns of seed bank composition and diversity in desert ecosystems. [ABSTRACT FROM AUTHOR]

What is a desert? What is a desert to a geomorphologist, a geoclimatologist, a biogeographer, a geoanthropologist, a cartographer or a geopolitologist? Geography, as a discipline that is as much concerned with terrestrial morphology and climates as it is with ecosystems and human societies, shed light on the various meanings of the term ‘desert’ in different fields of language and knowledge, providing insights into the significance of deserts for our contemporary societies. The ambition of this reflection is to unravel the complexities of deserts and help to grasp what deserts are and what they ‘do’ by encouraging geographers to merge bioclimatic analyses and geo-historical understandings, establishing the geographical discipline as the quintessential science of deserts. [ABSTRACT FROM AUTHOR]

Facilitative associations between the foundational shrub species Ephedra californica and local vertebrate species can drive positive interactions within desert ecosystems that influence diversity and assembly processes. These foundational shrubs can contribute to the structural heterogeneity of ecosystems for plants and animals including variation in temperature profiles, refuge from predation, and habitat for foraging. Artificial structures can also influence fine‐scale ecological and micro‐environmental dynamics. We tested the hypothesis that artificial shrubs (mimics) positively influence desert vertebrate association through facilitative interactions, similar to foundational shrub species. Mimics were deployed at four distinct sites within the central deserts of Southern California. A combination of camera traps and temperature pendants were utilized to measure the association patterns of vertebrate species and the microclimatic variation at mimic, open, and shrubs. A total of 21 species were observed in this study. Mimics had a significantly higher vertebrate abundance and richness than open microsites and functioned similarly to shrubs. These findings suggest that mimics can be utilized as a stop‐gap replacement for foundational shrub species as they can act as a novel fine‐scale habitat for many desert vertebrate species. [ABSTRACT FROM AUTHOR]

Subterranean rodents modify the surrounding environment being classified, in some cases, as keystone species and/or ecosystem engineers. This role could be context‐dependent if the changes produced shift throughout the species distribution range and are stronger under certain environmental conditions. Our objective was to analyse whether the effect of Ctenomys mendocinus on vegetation cover is context‐dependent. Given that primary productivity may increase plants' ability to tolerate or compensate following herbivory, we hypothesize that the effect of C. mendocinus on vegetation cover will be context‐dependent along a primary productivity gradient, with smaller effects in highly productive environments and larger effects in less productive ones. We compared the effect of C. mendocinus on plant cover among four contrasting environments and found that it depended on primary productivity in a predictable manner. In low productivity environments, the rodent significantly reduces vegetation cover, while it has no discernible effect in highly productive ones. These findings suggest that the effect of C. mendocinus on plant cover depends on primary productivity level and highlights the importance of accounting for the underlying environmental factors that influence the intensity of C. mendocinus–plant interaction. [ABSTRACT FROM AUTHOR]

Connectivity is essential for the maintenance of genetic diversity and stability of wildlife populations. Drought and changing precipitation regimes have caused natural aquatic amphibian breeding habitats to disappear or become isolated and have led to the replacement of natural surface water with artificial livestock water tanks. Terrestrial movement is the only means of responding to aquatic threats in arid landscapes and to allow population connectivity. Aridity may present an impenetrable barrier in hydrologically fragmented environments. We used a facultatively paedomorphic and federally endangered salamander to assess the challenges of movement across arid working lands. Sonoran tiger salamanders (Ambystoma mavortium stebbinsi) are endemic to the San Rafael Valley of southeastern Arizona, United States of America, where they depend on livestock water tanks as breeding habitat. The ecology of this species' metamorphs outside of stock tanks is virtually unknown. To assess survival on the landscape during terrestrial movement we used radio‐transmitters to track 78 adult metamorphosed salamanders over 2 years. Sonoran tiger salamanders moved up to 1 km from the tank edge, and average distances moved of over 400 m were higher than most Ambystoma species. However, during the study period, none reached neighboring stock tanks. We found high mortality due to predation and desiccation. Individuals that dispersed to terrestrial habitat in summer survived longer than individuals that dispersed in spring. High mortality suggests terrestrial movement is exceptionally risky and may contribute to isolated subpopulations and elevated levels of inbreeding. Conservation actions that improve and maintain artificial aquatic habitats as well as increase connectivity may improve long‐term management for pond‐breeding amphibians in arid regions. [ABSTRACT FROM AUTHOR]

Simple Summary: The Worthen sparrow (WS) is an endemic species of the Mexican rangelands that is considered endangered. The objective of this study was to document the building materials for nest building of this obligate grassland bird species. After completing the breeding season from 2013–2016, 207 empty nests were collected to analyze the construction materials used in their assembly. The findings revealed that Muhlembergia torrey was a key component of the WS's nest. The study was conducted within a well-managed beef cattle operation in northeastern Mexico. Each nest was weighed and dissected to obtain the plant and animal material used to build the nests. The number of materials present per nest and relative frequency were determined. Twenty-one building materials were used. Over the years, Muhlenbergia torreyi represented 85.5% of the total biomass of the nests, and Aristida longiseta, Bouteloua gracilis, Brickellia canescens, Purshia mexicana and Cirsium ehrenbergii constituted 2.45, 2.80, 2.44, 1.34 and 1.11% of the total biomass, respectively. The above-mentioned grasses represented 95.62% of the total biomass. Material of animal origin was horse and cow hair, which represented 0.84 and 0.58% of the total biomass, respectively. It was concluded that, at the study site, Muhlenbergia torreyi was a key nest-building material for the Worthen sparrow nest. [ABSTRACT FROM AUTHOR]

Scavenging dynamics are influenced by many abiotic and biotic factors, but there is little knowledge of how scavengers respond to extreme weather events. As carrion is a major driver of the organisation and structure of food webs within ecological communities, understanding the response of scavengers to extreme weather events is critical in a world that is increasingly subject to climate change. In this study, vertebrate scavenging and carcass persistence rates were quantified in the Simpson Desert of central Australia; a system that experiences major fluctuations and extremes in weather conditions. Specifically, a total of 80 adult red kangaroo (Osphranter rufus) carcasses were placed on the landscape and monitored using remote sensor cameras. This included 40 carcasses monitored before and then 40 carcasses monitored after a major flooding event. The carcasses were monitored equally before and after the flood across different seasons (warm and cool) and in dune and interdune habitats. Overall, a total of 8124 scavenging events for 97,976 visitation minutes were recorded for 11 vertebrate species within 30 days of carcass placement pre- and post-flood. Vertebrate scavenging increased post-flood in the warm season, especially by corvids which quadrupled their scavenging events during this time. There was little difference in carcass persistence between habitats, but carcasses persisted 5.3-fold longer post-flood in warm seasons despite increased vertebrate scavenging. The results demonstrate that a flood event can influence scavenging dynamics and suggest a need to further understand how seasons, habitats and extreme weather events can drive changes in carrion-based food webs. [ABSTRACT FROM AUTHOR]

The ultimatum and dictator games were developed to help identify the fundamental motivators of human behavior, typically by asking participants to share windfall endowments with other persons. In the ultimatum game, a common observation is that proposers offer, and responders refuse to accept, a much larger share of the endowment than is predicted by rational choice theory. However, in the real world, windfalls are rare: money is usually earned. I report here a small study aimed at testing how participants react to an ultimatum game after they have earned their endowments by either building a Lego model or spending some time sorting out screws by their length. I find that the shares that proposers offer and responders accept are significantly lower than that typically observed with windfall money, an observation that is intensified when the task undertaken to earn the endowment is generally less enjoyable and thus perhaps more effortful (i.e., screw sorting compared to Lego building). I suggest, therefore, that considerations of effort-based desert are often important drivers behind individual decision-making, and that laboratory experiments, if intended to inform public policy design and implementation, ought to mirror the broad characteristics of the realities that people face. [ABSTRACT FROM AUTHOR]

In this paper we explore whether or not the use of risk assessment tools in criminal sentencing can be made compatible with a retributivist justification of punishment. While there has been considerable discussion of the accuracy and fairness of these tools, such discussion assumes that one's recidivism risk is relevant to the severity of punishment that one should receive. But this assumption only holds on certain accounts of punishment, and seems to conflict with retributivist justifications of punishment. Drawing on the broader desert literature, we explain the source of this conflict, and suggest that a retributivist approach on which the severity of punishment partly depends on one's character in addition to their acts offers some hope of reconciling retributivism with the use of risk assessment tools in considerations of sentencing reduction in particular. Ultimately, however, even this limited attempt at reconciliation fails, so long as risk assessment tools fail to distinguish between risk that one is responsible for, and risk that one is not responsible for. [ABSTRACT FROM AUTHOR]

[Display omitted] • Desert is one of the harshest places on the earth due to low precipitation and soil nutrients. • Global desertification is a continuous process; almost 60% of the land surface is now desertified. • The plants in these desert ecosystems have developed several novel phenotypic characteristics that overcome the harsh environment. • Genome sequencing of the desert plant can enable us to identify the novel trait responsible for overcoming the xerophytic condition. • Transfer of novel genetic traits can be done to the crop plants. So that plants can withstand the harsh environment and overcome crop loss due to drought and other extreme conditions. Despite the exposure to arid environmental conditions across the globe ultimately hampering the sustainability of the living organism, few plant species are equipped with several unique genotypic, biochemical, and physiological features to counter such harsh conditions. Physiologically, they have evolved with reduced leaf size, spines, waxy cuticles, thick leaves, succulent hydrenchyma, sclerophyll, chloroembryo, and photosynthesis in nonfoliar and other parts. At the biochemical level, they are evolved to perform efficient photosynthesis through Crassulacean acid metabolism (CAM) and C4 pathways with the formation of oxaloacetic acid (Hatch-Slack pathway) instead of the C3 pathway. Additionally, comparative genomics with existing data provides ample evidence of the xerophytic plants' positive selection to adapt to the arid environment. However, adding more high-throughput sequencing of xerophyte plant species is further required for a comparative genomic study toward trait discovery related to survival. Learning from the mechanism to survive in harsh conditions could pave the way to engineer crops for future sustainable agriculture. The distinct physiology of desert plants allows them to survive in harsh environments. However, the genomic composition also contributes significantly to this and requires great attention. This review emphasizes the physiological and genomic adaptation of desert plants. Other important parameters, such as desert biodiversity and photosynthetic strategy, are also discussed with recent progress in the field. Overall, this review discusses the different features of desert plants, which prepares them for harsh conditions intending to translate knowledge to engineer plant species for sustainable agriculture. This review comprehensively presents the physiology, molecular mechanism, and genomics of desert plants aimed towards engineering a sustainable crop. [ABSTRACT FROM AUTHOR]

Since the commencement of Sustainable Development Goals (SDGs), renewable energy has faced many challenges in reaching the target of SDGs, while the potential ecological impact on the environment cannot be ignored. The expansion of photovoltaic (PV) networks is raising concerns regarding the potential impact of large-scale PV power stations on local ecosystems. However, a comprehensive understanding of the specific responses of vegetation and soil factors to PV con-struction across different study locations is still lacking. To address this knowledge gap, we con-ducted a comprehensive meta-analysis of 28 studies internationally representing 31 observational points that evaluated 432 different vegetation and soil factor responses to the installation of PV power stations. We used piecewiseSEM to explore the responses of predictors/factors to the eco-logical environment. This study investigated the geographical and environmental conditions associated with PV construction and their responses to vegetation and soil factors, considering the advantages and disadvantages of PV power station construction in different ecosystems. The results indicate that (1) the response of the ecosystems to PV power station construction increased by 58.89%. Among these, the most significant improvement is in the desert, which accounts for 77.26%. Im-provement in temperate regions is 59.62%, while there is a decrease of 19.78% in boreal regions. Improvement in arid regions is 84.45%, while improvement in humid regions is 9.84%. (2) PV construction promotes SWC, vegetation diversity, vegetation coverage, and vegetation biomass, significantly enhancing vegetation productivity. (3) Among the different ecosystems, PV power station effects were most significant in deserts, while showing negative impacts on croplands. (4) Compared to below-panel treatments, between-panel treatments were more effective in improving ecological conditions. The study contributes to mitigating adverse effects associated with photovoltaic site development, offering insights into site selection planning for solar power stations and the advancement of the renewable energy sector. [ABSTRACT FROM AUTHOR]

The use of underground dams has been human interest since ancient times and was built at any time according to the common scientific techniques of different eras. In this study, AHP decision making system method was used to establish the relationship between effective criteria and make a more accurate decision and save time and money. In this method, four watersheds were selected according to the location of Shahdad catchment area, and the statistics and available information were used from four main criteria and 3 sub-criteria and 17 indices in the process of analytic hierarchy process. Then, according to the relative importance of the mentioned criteria and their analysis in Expert Choice software, the final result was obtained. Generally, in Shahdad catchment, the water criterion has the highest weight and importance in the construction of underground dams in Shahdad catchment area and the axis criterion has the least weight and importance. In general, the results showed that Keshit watershed with a weight of 0.573 had the highest priority among the studied watersheds for underground dam construction. Then, the Pashueeyeh watershed with the weight of 0.202 was the second priority for underground dam construction, then Samoon Jahar watershed with a weight of 0.183 had the third priority and finally the Kahnooj Shah watershed with 0.042 had the lowest priority for underground dam construction. [ABSTRACT FROM AUTHOR]

Context: Managing human–wildlife conflict where anthropogenic resources are provided is difficult. Providing food, water and shelter can result in over-abundant dingo populations, especially in Australian desert mine sites where managing dingoes, wildlife and humans around waste-management facilities and camps is problematic. Aims: To measure and characterise the spatial activities of a population of arid-zone dingoes in relation to resources provided by a Cooper Basin (Strzelecki Desert, South Australia mining operation). The results were used to facilitate effective dingo management. Methods: Free-roaming dingoes were captured, their morphometrics and ectoparasite presence recorded, and they were fitted with Iridium (GPS) radio collars. These were used to collect high-fidelity data about individual dingo activity and movements in relation to mine-site infrastructure and the Cooper Basin ecosystem. Key results: A high density of dingoes (181 trapped in 2 km2 per 4 years) was associated with the mining operation. Home range/activity area sizes and usage of the anthropogenic landscape showed the following three categories of dingo: desert, peripatetic and tip dingoes. Dingoes reliant on food provisioning at the waste-management facility (WMF) displayed activity areas with a strong focus on the WMF (tip dingoes). Temporal activity patterns of another group of dingoes (peripatetic dingoes) were associated with regular waste-dumping times and normal nocturnal activity away from the WMF. Of the 27 dingoes collared, 30% (i.e. desert dingoes) were not dependent on the WMF, spending more time and a greater area of use in the desert dune system than in the mine-site area. Conclusions: On the basis of the capture of 181 dingoes over 4 years and home-range analysis, it is likely that anthropogenic resource provisioning has caused an overabundance of dingoes in the Cooper Basin mine site. However, some of the dingo population remains reliant on native wildlife and resources in the surrounding desert. Managing food waste and excluding dingoes from food, water and shelter will result in a change in the prevalence of dingoes in the mine site, and subsequent reduction in the risk of disease transmission, native wildlife impacts, human conflicts and social pressures on dingoes, influencing them to revert to domestic-dog behaviours. Implications: Waste-management facilities where food is dumped provide resources that lead to a change in wild-dingo behaviour, on the basis of their acceptance of human-provided resources, and high abundance. Managing access to anthropogenic resources will reduce the population as well as unwanted or aggressive encounters with humans. Dingoes reliant on food scraps will be encouraged to adjust their activity areas to desert habitat, thereby providing natural hunting opportunities and reduced contact rates with conspecifics, thus potentially reducing pathogen transmission. Managing over-abundant dingoes in mine sites requires an understanding of their use of the landscape. Using GPS radio-tracking, we collared dingoes to assess their home-range sizes, and the relationships of home-range sizes to anthropogenic resources, with a focus on a waste-management facility. Three categories of dingo were identified, showing differing relationships to human-provided resources, all of which help develop dingo-population management strategies. Photograph by Paul Meek. [ABSTRACT FROM AUTHOR]

Punishment involves the intentional infliction of harm and suffering. Both of the most prominent families of justifications of punishment – retributivism and consequentialism – face several moral concerns that are hard to overcome. Moreover, the effectiveness of current criminal punishment methods in ensuring society’s safety is seriously undermined by empirical research. Thus, it appears to be a moral imperative for a modern and humane society to seek alternative means of administering justice. The special issue of Diametros “The Abolition of Punishment: Is a Non-Punitive Criminal Justice System Ethically Justified?” was brought into life precisely to give the authors a platform for such progressive inquiries. And it is now safe to say that this platform has been put to excellent use, since Valerij Zisman, Alexander Stachurski, Giorgia Brucato, Perica Jovchevski, Sofia M. I. Jeppsson, Stephen G. Morris, Benjamin Vilhauer, John Lemos, Saul Smilansky, Elizabeth Shaw, Mirko Farina, Andrea Lavazza and Sergei Levin have presented such thought-provoking texts that they are bound to set the stage for debate in the years to come. This article is an introduction to this special issue and to the authors’ papers. [ABSTRACT FROM AUTHOR]

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I argue against the idea of basic desert. I claim that the supposed normative force of desert considerations is better understood in terms of dissociation. The starting point is to note that an important strategy in spelling out the apparent normative force of desert considerations appeals to the idea of complicity. I argue that the idea of basic desert cannot give a good explanation of this connection. I propose that it is rather dissociation that is explanatorily basic. I further argue that dissociation is an expressive action. Dissociation from wrongdoing—expressed as distancing from the wrongdoer—is an expressive attempt to do justice to the significance of wrongdoing in a way analogous to the expressive attempt to thank someone adequately for doing you a favor. I draw on the idea of dissociation as an expressive action to explain why it should be that a failure to dissociate is a source of complicity. [ABSTRACT FROM AUTHOR]

A rich diversity of radiation-resistant (Rr) and desiccation-resistant (Dr) bacteria has been found in arid habitats of the world. Evidence from scientific research has linked their origin to reactive oxygen species (ROS) intermediates. Rr and Dr. bacteria of arid regions have the potential to regulate imbalance radicals and evade a higher dose of radiation and oxidation than bacterial species of non-arid regions. Photochemical-activated ROS in Rr bacteria is run through photo-induction of electron transfer. A hypothetical model of the biogeochemical cycle based on solar radiation and desiccation. These selective stresses generate oxidative radicals for a short span with strong reactivity and toxic effects. Desert-inhibiting Rr bacteria efficiently evade ROS toxicity with an evolved antioxidant system and other defensive pathways. The imbalanced radicals in physiological disorders, cancer, and lung diseases could be neutralized by a self-sustaining evolved Rr bacteria antioxidant system. The direct link of evolved antioxidant system with intermediate ROS and indirect influence of radiation and desiccation provide useful insight into richness, ecological diversity, and origin of Rr bacteria capabilities. The distinguishing features of Rr bacteria in deserts present a fertile research area with promising applications in the pharmaceutical industry, genetic engineering, biological therapy, biological transformation, bioremediation, industrial biotechnology, and astrobiology.

Climate change can affect species' geographical range in several ways, leading to species' geographical range expansion and contraction. Amphibians are the most threatened vertebrate class, and deterioration is due, in part, to the loss of suitable habitat. This taxonomic group is especially sensitive because of their biphasic life cycles (aquatic and terrestrial) and microhabitat requirements. Herein, we propose a combined approach, which uses biological and life history information to understand species' sensitivity to climate change. The goals of our study were to (1) identify the contribution of environmental variables to the broad-scale distribution of amphibians in drylands of the southwestern United States and Mexico, (2) describe how the habitat suitability of amphibians can potentially respond to a range of climate change scenarios across drylands, and (3) identify amphibian traits related to increased vulnerability and adaptation to the specific pressures and mechanisms of climate change projected for the dryland areas. Results show that climate strongly influences the geographic distribution of amphibian diversity in drylands and that most amphibians are expected to lose habitat in the upcoming decades. This study also shows that areas with the greatest loss of high habitat suitability are related to temperature increases and precipitation reductions. Our results build a framework that will significantly improve the current state of knowledge on the drylands' biogeography while providing comprehensive information and analyses for decision-makers to conserve and protect endangered and threatened amphibian species and their habitats.

IntroductionSport tourism is a type of recreational trip where tourists temporarily leave their home to participate in sports activities, watch sports events or go to places that are related to sports activities. In other words, sports tourism is a phenomenon that is socially, economically, and culturally significant because of the unique interaction between an activity, people, and place. Many residents of Europe, who are deprived of this natural blessing of the world, consider desertification to be an attractive field of tourism. Domestic and foreign tourists can be attracted to Yazd province by its traditional, historical, cultural, geographical, and climatic architecture, handicrafts, and desert attractions. One of the most important features of the Yazd desert is its suitable space for activities and entertainment for different age groups, from children and babies to adventurous young people and middle-aged people. They can engage in various activities such as walking on sand dunes, watching the surfaces of salt marshes, salty rivers, seeing the clear sky and stars at night and the sunrise. The literature and research background indicate that the majority of research has concentrated on the factors or obstacles that contribute to the development of tourism in the desert, or the motivations of tourists. There is no research on sports tourism in the desert. Considering the high reception of foreign tourists from the city of Yazd and the variety of tourists who travel to Yazd from different parts of the world, solutions have been provided for the prosperity of the tourism industry in the city of Yazd as well as the country's tourism. It is important to consider the possibility of resolving tourism problems and increasing the number of foreign tourists in the regions. Nevertheless, the standard of living is slowly rising, and physical and mental health, recreation, and free time have become necessary for everyday life. It is crucial to address this issue by meeting people's diverse sports needs and improving their healthy living standards. Sports tourism as a means of maintaining physical and mental health and spending leisure time has many advantages. Promoting and developing tourism and economic prosperity can be achieved by developing sports tourism in the deserts of Yazd. Thus, the researcher decided to determine the factors that affect the acceptance of sports tourism in the desert by students at Yazd University. Material and MethodsThe current research was applied for specific purposes and used descriptive-correlational data collection methods. The statistical population of this research was the students of Yazd University, of whom 375 were selected as a sample according to Morgan's table using a simple random method. The research tool was the Alam Talab questionnaire (2014), whose validity was obtained by asking the opinions of experts in the field of sports tourism, and its reliability was obtained through Cronbach's alpha of 0.89. During descriptive analysis, SPSS version 26 software was employed, and Smart PLS version 4 software was utilized for structural equation modeling. Results and DiscussionIt was discovered that among the individual factor variables, the factor of obtaining pleasure and relaxation, which has a factor load of 1.199, is the most significant factor than physical fitness with a factor loads of 1.040. Among the variables of social factors, the mass media factor with a factor load of 0.929 is the most important item and the peer factor with a factor load of 0.724 is the least important item. The positive and significant effect of enjoyment and relaxation on the acceptance of sports tourism in the desert was confirmed, but the effect of fitness, mass media, family and peers on the acceptance of sports tourism in the desert was rejected. According to the coefficient of determination value of 0.124, the model does not fit well. According to the obtained results, it is suggested to have group tours with trained tour leaders during the competition season, preferably in autumn and winter, and with discounts or free sports insurance for emerging desert disciplines such as camel riding, sand riding, off-road, paragliding and Shooting with flying targets should be held in the deserts near and far of Yazd city. It is appropriate to provide extensive information about these events through mass media and national and local social networks. It is essential to prepare and make available to tourists complete and detailed maps of the routes, attractions, sports tourism facilities, and information in the desert camps of Yazd city. Finally, a specific trustee body in the tourism industry should be accountable for overseeing the activities of sports tourism tours.

The Heishan geothermal area is positioned above the sole Yunnan–Tibet high-temperature geothermal belt, where huge geothermal energy resources are available. Utilizing the characteristics of large exploration depth, extensive coverage, and high precision of the wide-field electromagnetic method, four survey lines were deployed, totaling 29.8 km, to enable a comprehensive analysis of the granite structure and fault distribution. The results indicate that the rocks within the area can be vertically divided into a granite basement and a fractured layer. Moreover, three different zones of resistivity were identified: the granite basement zone has a resistivity range of 2500–20000 Ω m, whereas the compressional shear zone and the secondary fault zone have a resistivity range of 750–2500 Ω m, and the extensional fault zone and the main fault zone have resistivity values below 750 Ω m. The Heishan-Hejian fault and the fault zone formed during its right-lateral strike-slip process, as well as the controlled area of the Qianmaihe fault, are all favorable targets. Of these, the Qianmahe fault possesses a larger-scale heat-conducting and water-controlling structure. In addition, in the secondary fault-controlled area extending to the west, the zone between F2’ and F4 exhibits renewed tectonic activity, suggesting a greater potential for geothermal resources.

The Lower Zeravshan district of Uzbekistan is characterized by the most arid climate and is particularly affected by global warming and anthropogenic pressure. The biodiversity of herpetobiont beetles in this region has not been sufficiently studied, and this makes it difficult to monitor the fauna of the region. This work was carried out to assess the biodiversity and ecological features of some groups of herpetobiont beetles during 2019–2023. Soil and light traps, soil excavations and manual collection were used to collect material. A total of 131 species of beetles were identified. The carabid fauna of the region is represented by 43 species belonging to nine subfamilies, 19 tribes, and 28 genera. For the fauna of the Republic, two species were recorded for the first time (Syntomus obscuroguttatus (Duftschmid, 1812) and Scarites subcylindricus Chaudoir, 1843). The darkling beetle fauna includes 46 species belonging to three subfamilies, 16 tribes, and 30 genera. For the first time, five species were recorded for the fauna of the Republic of Uzbekistan (Cyphogenia lucifuga Adams, 1817, Trigonoscelis apicalis Reitter, 1907, Colpotus sulcatus (Menetries, 1838), Tribolium destructor Uyttenboogart, 1933, Pentaphyllus chrysomeloides (Rossi, 1792)). The fauna of ground beetles and darkling beetles of the Lower Zeravshan consists of two species complexes that differ sharply from each other – xerophilic (inhabiting desert biocenoses) and hygromesophilic (inhabiting agricultural landscapes). The similarity coefficients of the fauna of these two types of biocenoses are very low. The fauna of click beetles is represented by 10 species belonging to four subfamilies and seven genera. The fauna of lamellar beetles consists of 31 species (32 with subspecies), belonging to eight subfamilies, 13 tribes, and 19 genera. In agrocenoses, a significant increase in the number of herpetobionts is observed in the first days of June. But their maximum number is observed in early July. It has been established that seasonal fluctuations in the number of representatives of the families Carabidae, Elateridae, Staphylinidae, and Tenebrionidae occur almost in parallel. Fluctuations in the number of representatives of the Scarabaeidae family do not correspond to the above pattern, and the maximum value is observed at the end of July. The data obtained can be used to assess biodiversity and environmental monitoring of arid zones of Uzbekistan.

The desert as a space is still fascinating people and stimulating the minds of those who nourish curiosity. Its landscape is the setting for cultural, religious, historical, artistic and phantasmagorical constructions and with its labyrinthine paths and surroundings, it offers an inexhaustible reservoir of perceptions for its inhabitants, researchers, visitors and admirers. Moreover, the image of the cultural other is stylized in this topographical environment. From a literary point of view, its location is a fertile ground for literary creativity and inspiration. This essay attempts to analyze the ambivalent side of the desert as a polyphonic and transcultural space for possible moments of enunciation, using the example of Karl May’s novel „Durch die Wüste“ (1892). The intention is also to examine the various facets of this space and its function as a plot and aesthetic-poetic topos of cultural Otherness in May’s poetry.

Surface roughness, interpreted in the wide sense of surface texture, is a generic term referring to a variety of aspects and scales of spatial variability of surfaces. The analysis of solid earth surface roughness is useful for understanding, characterizing, and monitoring geomorphic factors at multiple spatiotemporal scales. The different geomorphic features characterizing a landscape exhibit specific characteristics and scales of surface texture. The capability to selectively analyze specific roughness metrics at multiple spatial scales represents a key tool in geomorphometric analysis. This research presents a simplified geostatistical approach for the multiscale analysis of surface roughness, or of image texture in the case of images, that is highly informative and interpretable. The implemented approach is able to describe two main aspects of short-range surface roughness: omnidirectional roughness and roughness anisotropy. Adopting simple upscaling approaches, it is possible to perform a multiscale analysis of roughness. An overview of the information extraction potential of the approach is shown for the analysis of a portion of the Taklimakan desert (China) using a 30 m resolution DEM derived from the Copernicus Glo-30 DSM. The multiscale roughness indexes are used as input features for unsupervised and supervised learning tasks. The approach can be refined both from the perspective of the multiscale analysis as well as in relation to the surface roughness indexes considered. However, even in its present, simplified form, it can find direct applications in relation to multiple contexts and research topics.

Arid oasis ecosystems are susceptible and fragile ecosystems on Earth. Studying the interaction between deserts, oases, and impervious surfaces is an essential breakthrough for the harmonious and sustainable development of people and land in drylands. Based on gridded data such as land use and NDVI, this article analyzes the interaction characteristics between oases, deserts, and impervious surfaces in northern Egypt and examines their dynamics using modeling and geographic information mapping methods. The results show the following: In terms of the interaction between deserts and oases, the primary manifestation was the expansion of oases and the reduction of deserts. During the study period, the oases in the Nile Delta and Fayoum District increased significantly, with the area of oases in 2020 being 1.19 times the area in 2000, which shows a clear trend of advance of people and retreat of sand. The interaction between oases and impervious surfaces was mainly observed in the form of the spread of impervious surfaces on arable land into oases. During the study period, the area of impervious surfaces increased 2.32 times. The impervious surface expanded over 1903.70 km2 of arable land, accounting for 66.67% of the expanded area. The central phenomenon between the impervious surface and the desert was the encroachment of the covered area of the impervious surface into the desert, especially around the city of Cairo. Population growth and urbanization are the two central drivers between northern Egypt’s oases, deserts, and impervious surfaces. The need for increased food production due to population growth has forced oases to move deeper into the desert, and occupation of arable land due to urbanization has led to increasing pressure on arable land, creating a pressure-conducting dynamic mechanism. Finally, countermeasures for sustainable regional development are suggested.

This paper argues that the mainstream economics view of production based on the conventional factors of production is socially and empirically inaccurate, giving a distorted view of the nature of the production process and the agents responsible for it. Although the factors of production are essential, just as important are the various social, cultural, and political enabling conditions, or what is termed the ‘understructure’ of market production (the complex of infrastructures which underlie and enable market production). We gain an enriched understanding of what the economy truly is by studying the functioning of the understructure and the ancestral labour and care encompassed in it. If this revised view is correct, it has radical ethical implications. In particular, it implies that individuals do not morally deserve the bulk of the income (90% or more) that they receive in the market. High levels of redistributive taxation may therefore be legitimatea. [ABSTRACT FROM AUTHOR]

The spatial distribution of tumor infiltrating lymphocytes (TILs) defines several histologically and clinically distinct immune subtypes—desert (no TILs), excluded (TILs in stroma), and inflamed (TILs in tumor parenchyma). To date, robust classification of immune subtypes still requires deeper experimental evidence across various cancer types. Here, we aimed to investigate, define, and validate the immune subtypes in melanoma by coupling transcriptional and histological assessments of the lymphocyte distribution in tumor parenchyma and stroma. We used the transcriptomic data from The Cancer Genome Atlas melanoma dataset to screen for the desert, excluded, and inflamed immune subtypes. We defined subtype-specific genes and used them to construct a subtype assignment algorithm. We validated the two-step algorithm in the qPCR data of real-world melanoma tumors with histologically defined immune subtypes. The accuracy of a classifier encompassing expression data of seven genes (immune response-related: CD2, CD53, IRF1, and CD8B; and stroma-related: COL5A2, TNFAIP6, and INHBA) in a validation cohort reached 79%. Our findings suggest that melanoma tumors can be classified into transcriptionally and histologically distinct desert, excluded, and inflamed subtypes. Gene expression-based algorithms can assist physicians and pathologists as biomarkers in the rapid assessment of a tumor immune microenvironment while serving as a tool for clinical decision making. [ABSTRACT FROM AUTHOR]

Psychological literature indicates that actions performed with the assistance of cognition‐enhancing biomedical technologies are often deemed to be less praiseworthy than similar actions performed without such assistance. This study examines (i) whether this result extends to the bioenhancement of moral capacities, and (ii) if so, what explains the effect of moral bioenhancement on perceived praiseworthiness. The findings indicate that actions facilitated by morally bioenhanced individuals are considered less deserving of praise than similar actions facilitated by 'traditional' moral enhancement—for example, moral self‐education. This diminished praise does not seem to be driven by an aversion to (moral) bioenhancement per se. Instead, it appears to be primarily attributable to a perceived lack of effort exerted by bioenhanced individuals in the course of their moral enhancement. Our findings advance the philosophical discourse on the foundations of praise in the context of moral bioenhancement by elucidating the empirical basis underlying some assumptions commonly employed to argue for or against the permissibility of moral bioenhancement. [ABSTRACT FROM AUTHOR]

Direct seeding is one of the most feasible techniques in practical, logistical, and economic terms for large‐scale restoration of arid lands. However, several factors are still under study to enhance the outcomes of this restoration alternative, with species selection being a pivotal component. To evaluate differences in the performance of species in direct seeding, we selected five shrubs from the arid region known as "Monte Desert" in Argentina: Atriplex lampa, Hyalis argentea, Larrea divaricata, Neltuma flexuosa var. depressa, and Parkinsonia praecox. Direct seeding was carried out in furrows (4.0 m long, 0.5 m wide, and 0.4 m deep) with seeds previously treated to dormancy alleviation and with a density of 250 seeds/m2. We evaluated results in 12 furrows, where topsoil and hydrogel were deposited. The biological variables considered were seedling emergence, seedlings establishment regarding sowed seeds, and seedling success (survival in relation to emerged seedlings) after almost 3 years. The species with the highest emergence and establishment rates was A. lampa (50.16 and 23.75%, respectively). L. divaricata showed the lowest values for these variables (2.17 and 0.83%, respectively). On the other hand, the survival of N. flexuosa seedlings was >2× that of L. divaricata (65.02 vs. 30.36%). We discuss the notable differences in species performance and the possible role of furrows in the results. [ABSTRACT FROM AUTHOR]

The aoudad (Ammotragus lervia) is a Vulnerable bovid endemic of North Africa. Although legally protected in almost every country of its native distribution, the aoudad continues to be hunted for meat and trophy in both North Africa and the countries where it has been introduced. The species was subject to past translocations planned irrespectively of the genetic diversity and local adaptations of source and receiving populations, and no management or conservation units have ever been designed. We aim to provide here important insights on the taxonomy of the aoudad subspecies and the genetic diversity of most of its wild and captive populations. We collected 127 invasive and non-invasive samples from five of the six subspecies of aoudad recognized to date. We could successfully retrieve genetic data for 74 samples. Of those, 36 provided both nuclear (11 microsatellites) and mitochondrial (Cyt-b) data, 31 just nuclear data, and six just mitochondrial data. We implement Bayesian approaches to infer the population structure and phylogenetic relationships between the different populations/subspecies and backtrack the maternal lineages of introduced individuals in European populations. Our results support the presence of four genetically different wild populations, corresponding to three distinct mitochondrial lineages plus a fourth group restricted to Egypt identified by the nuclear markers. We also provide genetic evidence on the affiliation of some introduced European populations with respect to the native ones. The genetic diversity instead of variation within all wild populations was low. This might be a consequence of small effective population size and/or high inbreeding degree, probably related to hunting, decline in habitat availability and quality (i.e. overgrazing, and frequent drought), and high inbreeding degree. Our results provide important information for the aoudad conservation, including reintroductions and reinforcement actions of wild populations, and the exchange of individuals among captive stocks. [ABSTRACT FROM AUTHOR]

Shrubland is an important type of vegetation in the semi-arid region of the western Loess Plateau, and it is of great value to the maintenance of biodiversity and soil and water conservation. Equally, there may be significant differences in the level of diversity and the community assembly patterns across different types of shrublands (desert, alpine, and secondary shrublands). This study aimed to reveal the diversity and the community assembly patterns of different types of shrublands and the environmental explanations for these by using a taxonomic and phylogenetic analysis approach, as well as by considering soil and climate factors. The diversity level of the desert shrublands was low, and the habitats of the three types of shrubland were significantly different. Precipitation may be the main environmental factor driving the variation in and diversity of these types of shrubland. All three types of shrubland were strongly affected by environmental filtering and competitive exclusion, and their community assembly patterns were similar. [ABSTRACT FROM AUTHOR]

Ecological products and ecosystem services are essential for human survival and development. Gross Ecosystem Product (GEP) is a method to combine the value of ecosystem services and can reflect the status of ecosystem and ecological conservation and restoration performance. The conservation and restoration of desert ecosystems play an important role in expanding global cultivated land, ensuring food security, and improving human wellbeing. However, ecosystem services and the value of GEP in deserts have been neglected. Taking the Kubuqi Desert ecosystem as an example, this study evaluated the pattens, GEP value, and its change in the Kubuqi Desert ecosystem from 2000 to 2020. Our study found that 1) over the past 20 years, the areas of wetlands, forests, grasslands, and shrubs in the Kubuqi desert ecosystem had increased by 100.65%, 6.05%, 2.24%, and 2.03%, respectively, while that of desert had decreased by 10.62%; 2) the GEP of Kubuqi in 2020 was 55.48 billion CNY, among which its sandstorm prevention value was the highest (39.39%); 3) The value of ecosystem services in the Kubuqi desert ecosystem were all increased over the 20-year period and the largest increase came from sandstorm prevention (increased by 195.09%). This study emphasizes how GEP accounting can promote desert conservation and restoration, quantifies the contribution of desert ecosystems to human wellbeing, and provides future GEP accounting suggestions for desert ecosystems. This study can provide scientific information on the conservation and restoration of global desert ecosystems. [ABSTRACT FROM AUTHOR]

The article explores the concept of the "desert of blame," emphasizing that blaming attitudes are multifarious and can be fitting or unfitting responses to individuals based on their blameworthiness. The author argues that the desert of blame is connected to justice, contending that blame is deserved only when directed at the blameworthy, forming an intrinsic aspect of moral responsibility.

An on-going question in plant hydraulic research is whether there is intra-specific variability and/or plasticity in xylem traits. Plasticity could be important in taxa that colonize diverse habitats. We used Tamarix, a non-native woody plant, to investigate population differences in hydraulic conductivity (Ks), vulnerability-to-embolism curves and vessel anatomy. We also conducted a season-long drought experiment to determine water potentials associated with crown dieback of field-grown plants. We measured vessel length and diameter, and compared visual (micro-computed tomography; microCT) and hydraulic methods to quantify percentage loss in hydraulic conductivity (PLC). Among plants grown in a common environment, we did not find differences in our measured traits between two populations of Tamarix that differ in salinity at their source habitats. This taxon is relatively vulnerable to embolism. Within samples, large diameter vessels displayed increased vulnerability to embolism. We found that the microCT method overestimated theoretical conductivity and underestimated PLC compared with the hydraulic method. We found agreement for water potentials leading to crown dieback and results from the hydraulic method. Saplings, grown under common conditions in the present study, did not differ in their xylem traits, but prior research has found difference among source-site grown adults. This suggests that plasticity may be key in the success of Tamarix occurring across a range of habits in the arid southwest USA. [ABSTRACT FROM AUTHOR]

This paper is devoted to the analysis of air temperature and humidity changes during the two solar eclipses of 26 December 2019 and 21 June 2020 in Saudi Arabia based on data we collected from two different sites. We highlight the complexity of humidity's response to a solar eclipse, which is quite different from temperature's response. During the December event, the Sun rose already partially eclipsed, while for the June eclipse, it was only partial at Riyadh. This difference apparently affected the observed response on the recorded variables: temperature, relative humidity (RH), and vapor pressure (VP) in the two events. Changes in these variables went unnoticed for the first eclipse since they were within the natural variability of the day; yet for the other, they showed evident alterations in the slopes of the major parameters, which we analyze and discuss. A decrease in temperature of 3.2 °C was detected in Riyadh. However, RH and VP showed an oscillation that we explain taking into account a similar effect reported in other eclipses. We measured a time lag of about 15 min from the eclipse central phase in the city. Related fluctuations and dynamics from the computed rates of the temporal variation of temperature and RH are scrutinized. Furthermore, an overdue significant review of terrestrial atmospheric parameters is also offered in the context of the eclipse meteorology, particularly related to desert atmospheres. We also try to identify the influence of solar eclipses in similar environments doing a broad inter-comparison with other observations of these variables in the Near East, northern Africa, and in the United States. These inter-comparisons reveal how complex and dissimilar the response of the lower atmosphere to a solar eclipse can be within a desert environment and other similar environments. [ABSTRACT FROM AUTHOR]

Ants (Hym., Formicidae) have been recognized as vital components of arid ecosystems. Determining the diversity patterns of ants and the ecological factors behind these patterns is expected to improve our understanding of the functioning of arid ecosystems. Here, we explored patterns of ant species diversity and community composition along an elevational gradient (800 to 2800 m) in the arid area of Central Iran. The elevational gradient in ant diversity and the effects of environmental factors on various indices of ant diversity and species composition were investigated using generalized linear mixed models and variance partitioning analysis. We recorded 34 ant species of 12 genera and 8 tribes from 120 surveyed quadrats. Climate variables were the most important predictors of ant community structure. Indices of ant alpha diversity including Hill numbers and taxonomic diversity increased with elevation. Hill numbers were negatively influenced by temperature, while they were positively affected by precipitation. The observed diversity pattern could be explained by the diversity-productivity hypothesis. In our study area, the maximum primary productivity and consequently the maximum species diversity occurred at high elevations, where precipitation is high and temperature is lower than the extremes that could limit plant productivity. Ant assemblages are expected to become increasingly composed of warm-tolerant species in response to warmer and drier conditions driven by climate change. The distribution of species with lower heat tolerance will be limited to high-elevation areas in Central Iran. These areas could act as refuges for ants and should be considered priorities for conservation. [ABSTRACT FROM AUTHOR]

This article aims to investigate possible meanings of the desert in the novel The Savage Detectives (1998) by Roberto Bolaño. Starting from a look directed at the exegesis of the desert as both a natural landscape and a rhetorical image, we seek to understand the latent role that this space has in the utopian journey undertaken by Ulises Lima and Arturo Belano in search of the poet Cesárea Tinajero. From this, it is possible to assess a critique of modernity in Bolaño's work based on a representation of the paradoxical Latin American cultural scenario. [ABSTRACT FROM AUTHOR]