A5088229752- Ecology and Vegetation Dynamics Studies
- Plant and animal studies
- Legume Nitrogen Fixing Symbiosis
- Soil Carbon and Nitrogen Dynamics
- Agronomic Practices and Intercropping Systems
- Plant Parasitism and Resistance
- Plant Water Relations and Carbon Dynamics
- Wildlife Ecology and Conservation
- Rangeland and Wildlife Management
- Mediterranean and Iberian flora and fauna
- Entomological Studies and Ecology
- Ruminant Nutrition and Digestive Physiology
- Plant Ecology and Taxonomy Studies
- Wastewater Treatment and Reuse
- Cassava research and cyanide
- Land Use and Ecosystem Services
- Agricultural and Rural Development Research
- Archaeology and ancient environmental studies
- Remote Sensing and LiDAR Applications
- Pesticide and Herbicide Environmental Studies
- Irrigation Practices and Water Management
- Isotope Analysis in Ecology
- Rangeland Management and Livestock Ecology
- Species Distribution and Climate Change
- Pharmaceutical and Antibiotic Environmental Impacts
Agricultural Research Organization
2018-2024
Ben-Gurion University of the Negev
2019
Hebrew University of Jerusalem
2018
University of Haifa
2011-2014
Summary Leaf nitrogen concentration often is higher in leguminous plants, which associate with dinitrogen‐fixing bacteria, compared nonlegume plants. However, the range of concentrations legumes wide, likely related to fixation strategies. We evaluated how carbon and allocation roots, stems leaves influenced by type strategy regulation. grew herbaceous annual ( Medicago truncatula , Hymenocarpos circinnatus Vicia palaestina ) under two availability treatments (none/sufficient), without...
Plants, especially perennials, growing in drylands and seasonally dry ecosystems are uniquely adapted to conditions. Legume shrubs trees, capable of symbiotic dinitrogen (N2 ) fixation, often dominate drylands. However, the strategies that allow fixation these ecosystems, their influence on nitrogen cycle, largely unresolved. We evaluated climatic, biogeochemical ontogenetic factors influencing an abundant Mediterranean legume shrub, Calicotome villosa. measured nodulation, rate, allocation...
Reconstructing the origins of plant cultivation in southwest Asia is crucial for understanding associated processes such as emergence sedentary communities and domesticated crops. Among criteria archaeobotanists developed identifying earliest cultivation, presence potential arable weeds found association with wild cereal legume remains has been used a basis supporting models prolonged before crops appear. However, proposed weed floras mainly consist genus-level identifications that do not...
Abstract The importance of symbiotic dinitrogen (N 2 ) fixation in shaping the coupled nitrogen–carbon cycle is now known for most humid terrestrial ecosystems. However, whether N can play a key role nitrogen and carbon budget water‐limited seasonally dry ecosystems remains mystery. maintenance metabolically physiologically costly environments highly complex. These costs are particularly high during first developmental season, when allocation to deep rooting drought resistance mechanisms...
Abstract Surplus wastewater accumulates in winter and requires a discharging solution. In our study we examined the effects of using treated (TWW) as supplemental pasture irrigation winter. To test effect TWW on vegetation soil, 10 grazing prevention exclosures were established at Ramat‐Hanadiv Park, Israel, with half them irrigated TWW. Soil sampled during 2 years 1 year after cessation irrigation. Vegetation composition, species richness, productivity peak growing season various indices...
Abstract Questions Two central pathways have been proposed to dictate the relationship between community structure and ecosystem function: “diversity effect” — trait variation allowing complementary resource use, “mass ratio function determined overwhelmingly by functional traits of dominant species which shape “functional identity”, i.e., community‐weighted mean values. However, distinct effect each pathway on is difficult determine as they are shaped environmental heterogeneity. We...
Abstract Legumes in dryland ecosystems face the challenge of maintaining energetically costly symbiosis with N 2 ‐fixing rhizobia, a water‐ and nutrient‐limited environment. Controlled experiments showed strong reduction symbiotic fixation response to elevated levels nitrogen availability, but this regulation was not found field settings. Here, we ask whether occurs what are possible consequences for soil nitrogen. We measured plant investment root nodules rates bacterial activity, seedlings...
In Mediterranean grasslands, the composition of vegetation and its nutritional quality for animals are strongly affected by climatic conditions prevailing during winter spring. Therefore, these seasonal ecosystems provide an opportunity to examine how variability in affects regeneration pasture vegetation. The intensity grazing this system can moderate, or alternatively exacerbate, effects on Herein, we analyzed interactive climate variables, intensity, exclusion herbage parameters using...
Controlled experiments at the level of individual plants show that legume species use different strategies for regulation symbiotic dinitrogen fixation in response to nitrogen availability. These were suggested improve fitness context plant community, although rarely studied this level. We evaluated how availability and conspecific vs heterospecific interactions influenced strategy fixation. grew two herbaceous legumes representing without interaction, under treatments deficient sufficient...
Abstract Spiny plants comprise a large, ecologically and economically important functional group in Mediterranean rangelands. The increasing abundance of large annual thistles grazed grasslands entails major consequences for ecosystem services. This study aims to quantify the contribution spiny rangeland vegetation cover productivity identify management‐ climate‐related drivers plant distribution performance. Using 15‐year dataset from an extensive herbaceous pasture experiment northeastern...
The populations of the endangered mountain gazelle (Gazella gazella), which inhabit large parts Israel, across various ecosystems and climatic conditions, shrunk drastically over last decades. To date, data on nutrition, how these relate with individual characteristics respond to seasonal environmental changes, have not been available. We analyzed 110 samples from rumen contents collected throughout country occasional fatalities, mainly roadkills, tested feasibility using them for...