This study investigates the diet of copper miners at Naḥal ‘Amram (southern Negev Desert), through the examination of the well-preserved remains of plants, mammal and fish bones, dating to the Roman-Byzantine periods (1st–5th centuries CE), recovered during excavations undertaken in three different localities at this mining complex.

Our analyses revealed that the miners enjoyed a varied and nutritious diet, comprising nine species of fruits and vegetables, alongside meat from two domestic animal taxa and representatives of eight different families of fish. While the fish and animal foods were brought to the mines from the Red Sea and neighboring regions, the vegetal food originated from a variety of different sources, some nearby, others quite distant.

We suggest that since copper was traded from Naḥal ‘Amram, the foods arrived at the mines via the same trade routes, from settlements along the ‘Arabah, and these foodstuffs were likely bartered in exchange for copper. The results imply that the people engaged in copper mining were likely a local desert population, Nabataeans, supplementing their food needs from external sources and so enjoying improved nutritional status.

Beyond its findings, the importance of this study lies in the combination of several disciplines, a methodology which can be useful for future research and provide a more reliable understanding of reconstructing the ancient diet.

Premature aging can be partially explained by inefficient autophagy (the process of cellular self-digestion that recycles intracellular components) and premature senescence (cease of cellular division without cell death activation). Autophagy and senescence are among the basic biochemical pathways in plants and fungi suggesting that some of their metabolites have the potential to act as autophagy inducers (AI) and senescence inhibitors (SI) and to inhibit inflammation and human aging. Several compounds have already been identified: trehalose and resveratrol are natural compounds that act as AI; flavonoids found in fruit and vegetables (curcumin, quercetin, and fisetin) are among the first SI discovered so far. New AI/SI can be identified using various approaches like hypothesis-driven approach for screening receptor agonists using an in-silico library of thousands of natural compounds; cheminformatics studies of phytochemicals using docking and molecular dynamics simulation, structure similarities/mimicry in vitro, “blind” high throughput screening (HTS) of libraries of natural metabolites against relevant models, and more. This article aims to promote the use of plant and fungi novel resources to identify bioactive molecules relevant for healthy aging based on the knowledge that plants and fungi use autophagy and senescence mechanisms for their own survival and homeostasis. As autophagy and senescence are interconnected, how drugs targeting autophagy, senescence, or both could contribute to healthy aging in humans will be speculated.

On April 10, 2023, exceptional weather conditions over southern Israel produced an extreme rainstorm. The peak precipitation, with a maximum rainfall depth of 62 mm and rain intensities exceeding 50 mm h⁻¹, fell over the hyper-arid southern Negev and Arava Valley and generated a mega flash flood in Wadi Zihor. This ephemeral stream channel supported a comparatively dense cover of vegetation, predominated by Acacia raddiana, Acacia pachyceras, Tamarix nilotica, and Tamarix aphylla. To determine the properties of the flash flood, we used post-flood ground-based measurements and calculations of shear stress and peak discharge along the wadi. Also, we used pre- and post-flood satellite images to assess the flood’s impact on woody vegetation cover along the ∼17 km-long wadi bed. Calculations based on data collected by the Israel Water Authority implied a peak discharge of 585 m³/s at the wadi outlet, indicating a low-frequency flash flood of less than once in 150 years. The pre-flood’s 12.7 % vegetation cover throughout the wadi bed decreased to 7.5 % after the flood, corresponding to a 41 % net loss. To detect differences in tree removal extent along the wadi, we divided its entire length into 24 equal segments, and separately assessed the vegetation cover before and after the flood. Vegetation cover loss was 10.8 % in the wadi’s uppermost segment, whereas its lowermost segment lost 51.6 %. Overall, a significant and strongly positive (r = 0.88) correlation was recorded between the accumulated watershed area (downstream) and the extent of tree cover loss. Among other factors, this effect seems to be predominantly determined by the increasing shear stress and peak discharge downstream. Forecasted climatic change scenarios, with increasing magnitude and frequency of extreme rainstorms and floods across the world’s drylands, highlight the need for more data collecting and analyzing of those events impact as described in this study.

After reading Bar-Adon’s unpublished excavation log and revisiting the Rujm el-Bahr site, I have new insights relating to the construction, identification and significance of the breakwater, tombolo and structure. The site was excavated and identified as an anchorage on which a superstructure was built. Mooring stones were used to secure and protect ships from southern Dead Sea storms. After revisiting the site, I conclude that it was built on land, and protected by a breakwater that created lagoons for ships. It was likely used as a checkpoint for sailing traffic on the Dead Sea during the Second Temple period.

Due to ongoing ocean warming, subtropical environments are becoming accessible to tropical species. Among these environments are the vermetid reefs of the Southeastern Mediterranean (SEM). In the last decades, these valuable coastal habitats witnessed the proliferation of numerous alien species of tropical origin. Among the meiofauna thriving on these reefs are benthic foraminifera, single cell marine organisms that make a significant contribution to global carbonate production. It has been widely recognized that benthic foraminifera, among other invasive species, thrive in the macroalgal cover, and it has been suggested that their populations are becoming a significant new source of sediment substrate. Here, we report on the first systematic assessment of the population size of the benthic foraminifera, allowing a comparison with data from the native tropical habitat of these species. Our study is based on a seasonal sampling of benthic foraminifera from confined sampling areas at four sites along the vermetid reef platforms of the Israeli SEM coast. Our survey reveals a patchy distribution of each species with peak population densities exceeding 100,000 specimens per m², making the SEM a hotspot of benthic foraminifera, with population densities comparable to tropical coral reef environments. The assemblages of the SEM hotspot are dominated by cosmopolitan foraminiferal taxa and tropical invaders from the Indo-Pacific (e.g., Amphistegina lobifera, Pararotalia calcariformata, soritids, and Hauerina diversa). In contrast to foraminiferal hotspots in the tropics, which are completely dominated by larger symbiont-bearing taxa, the SEM hotspot stands out due to high abundances of non-symbiont-bearing species Textularia agglutinans and small miliolids. An intriguing observation is the significant heterogeneity in composition and density of foraminiferal assemblages between the vermetid reefs' southern and northern areas (Israel), indicating that the productivity of the dominant species are also modulated by local yet unknown environmental factors.

This article examines the multidimensional problem of energy poverty, focusing on its connections to climate change and its manifestation at rural and urban scales across selected European countries and Israel. The study examined 31 locations in eight countries with diverse geographical and economic backgrounds: Bosnia and Herzegovina, Greece, North Macedonia, The Netherlands, Portugal, Spain, Slovakia, and Israel. The article aims to understand how winter energy vulnerability in rural and urban locations in these countries could be identified using selected energy poverty indicators and how it evolves under the influence of climate change. A set of sociodemographic, infrastructural, and economic variables, combined with climate analysis, were selected and assessed for their impact on energy poverty. We found that energy poverty in most countries depends significantly on location and regional development. Due to a combination of factors influencing energy poverty, rural households tend to be more vulnerable. Furthermore, climate change consequences will likely leave rural areas more likely to experience energy poverty in the future.

Grey wolf (Canis lupus) populations are beginning to increase globally after centuries of decline. While protective legislations and policy implementations have been driving this increase, evidence suggests that these work because of a general rise in public acceptance of wolves. As people have become more knowledgeable of the important ecological roles played by wolves, protection has gained increasing community support, with human-wolf coexistence now being achieved in some areas. However, this is not universal, and some subspecies remain endangered. This is the case for the little-known Arabian wolf (Canis lupus arabs), which inhabits arid regions of the southern Levant and Arabian Peninsula: a geopolitically diverse region crossing multiple jurisdictions with disparate cultures, legislations, and attitudes towards wildlife and conservation. Here we review global efforts within the wolf conservation sphere to explore potential opportunities and challenges in the Middle East, acknowledging and accounting for the unique geopolitical complexity of this region. We bring together what is known about this wolf's taxonomic status, distribution, ecology, and conservation across eleven countries in which it resides, collating decades of legislation, governmental, and non-governmental conservation efforts, and summarising literature pertinent to the Arabian wolf. Cross-border collaborations remain challenging in the Middle East, but we identify practical and culturally-based solutions that may improve coexistence and conservation goals, building upon areas where coexistence already occurs. We write this review in the hope that it will highlight the synergies, opportunities, and obstacles that require more serious deliberation and collaboration to conserve one of the region's remaining apex predators.

Biofouling is the main challenge in the operation of anaerobic membrane bioreactors (AnMBRs). Biofouling strongly depends on temperature; therefore, we hypothesize that the interactions and viscoelastic properties of soluble microbial products (SMP) and extracellular polymeric substances (EPS) vary with temperature, consequently influencing membrane permeability. This study compares the performance of an AnMBR operated at a similar permeate flux at two temperatures. The transmembrane pressure (TMP) rose rapidly after 5 ± 2 days at 25 °C but only after 18 ± 2 days at 35 °C, although the reactor's biological performance was similar at both temperatures, in terms of the efficiency of dissolved organic carbon removal and biogas composition, which were obtained by changing the hydraulic retention time. Using confocal laser scanning microscopy (CLSM), a higher biofilm amount was detected at 25 °C than at 35 °C, while quartz crystal microbalance with dissipation (QCM-D) showed a more adhesive, but less viscous and elastic EPS layer. In situ optical coherence tomography (OCT) of an ultra-filtration membrane, fed with the mixed liquor suspended solids (MLSS) at the two temperatures, revealed that while a higher rate of TMP increase was obtained at 25 °C, the attachment of biomass from MLSS was markedly less. Increased EPS adhesion to the membrane can accelerate TMP increase during the operation of both the AnMBR and the OCT filtration cell. EPS's reduced viscoelasticity at 25 °C suggests reduced floc integrity and possible increased EPS penetration into the membrane pores. Analysis of the structures of the microbial communities constituting the AnMBR flocs and membrane biofilms reveals temperature's effects on microbial richness, diversity, and abundance, which likely influence the observed EPS properties and consequent AnMBR fouling.

It is widely acknowledged that traditional agricultural practices must effectively address the increasing global demand for food while facing water scarcity and climate change challenges. The imperative for environmentally sustainable agricultural approaches has never been more urgent. In response, IoT-based Smart Agriculture has emerged as a promising solution. Smart Agriculture can significantly bolster agricultural development by integrating renewable energy sources, particularly in arid regions with abundant sunlight. Real-time control systems utilizing big data acquisition and processing are pivotal in this advancement. This study introduces a cloud-based smart irrigation system to connect numerous small-scale smart farms and centralize pertinent data. The system optimizes irrigation water usage through comprehensive big data collection, storage, and analysis. Leveraging the insights from this data can facilitate informed decision-making regarding water management, thereby fostering conservation efforts, particularly in arid regions. Additionally, this research explores weather prediction services to enhance irrigation control, particularly during intermittent rainy periods, within a real-world testbed powered by solar energy. The testbed incorporates a sophisticated big data management system. It showcases a Smart Farm prototype leveraging the Internet of Things, embedded systems, low-cost Wireless Sensor Networks, NI CompactRIO controller, and Cloud Computing. Encouragingly, the results demonstrate tangible improvements in water conservation. Furthermore, the deployment methodology outlined in this study provides a clear roadmap that can be readily adapted for similar research endeavors.© 2023 Elsevier Inc. All rights reserved.

High abundance of legumes in drylands suggests that symbiotic nitrogen fixation provides an advantage in water-limited environments. However, the interactive effect of nitrogen availability and water scarcity on the nitrogen fixation strategies of dryland legumes remain largely unexplained. We conducted two experiments to test the effects of nitrogen availability and drought on symbiotic nitrogen fixation in two drought-adapted Acacia tree species. Seedlings were grown under deficient and sufficient levels of nitrogen and with and without an imposed drought to test the effect of resource availability on nitrogen fixation and plant growth. We found that seedlings that grew in extreme deficiency of nitrogen reached a similar biomass as seedling that grew with a sufficient supply of nitrogen, showing a high nitrogen-use efficiency. Nitrogen fixation was strongly downregulated (reduction of 90% in biomass allocation to nodules) when plants received sufficient nitrogen supply. Under nitrogen deficiency, drought had a slight negative effect on nodule biomass and total biomass. Under sufficient nitrogen, drought reduced nitrogen availability enough to induce an increase in symbiotic nitrogen fixation in the risk-averse A. raddiana but not in the risk-taking A. tortilis. We conclude that strong regulation of nitrogen fixation together with low nitrogen demand, and flexible strategies of carbon and nitrogen allocation, increase the chance of legume tree survival and establishment in dry and unpredictable environments.