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Northern Israel (northern + israel)
Selected AbstractsA community-level test of the leaf-height-seed ecology strategy scheme in relation to grazing conditionsJOURNAL OF VEGETATION SCIENCE, Issue 3 2009Carly Golodets Abstract Question: Is the assumption of trait independence implied in Westoby's (1998) leaf-height-seed (LHS) ecology strategy scheme upheld in a Mediterranean grazing system dominated by annuals? Is the LHS approach applicable at the community level? Location: Northern Israel. Methods: LHS traits (specific leaf area [SLA], plant height and seed mass), and additional leaf traits (leaf dry matter content [LDMC], leaf area, and leaf content of nitrogen [LNC], carbon [LCC], and phosphorus [LPC]), were analyzed at the species and community levels. Treatments included manipulations of grazing intensity (moderate and heavy) and protection from grazing. We focused on species comprising 80% of biomass over all treatments, assuming that these species drive trait relationships and ecosystem processes. Results: At the species level, SLA and seed mass were negatively correlated, and plant height was positively correlated to LCC. SLA, seed mass, and LPC increased with protection from grazing. At the community level, redundancy analysis revealed one principal gradient of variation: SLA, correlated to grazing, versus seed mass and plant height, associated with protection from grazing. We divided community functional parameters into two groups according to grazing response: (1) plant height, seed mass, LDMC, and LCC, associated with protection from grazing, and (2) SLA, associated with grazing. Conclusions: The assumption of independence between LHS traits was not upheld at the species level in this Mediterranean grazing system. At the community level, the LHS approach captured most of the variation associated with protection from grazing, reflecting changes in dominance within the plant community. [source] Interpretation of Spring Recession CurvesGROUND WATER, Issue 5 2002H. Amit Recession curves contain information on storage properties and different types of media such as porous, fractured, cracked lithologies and karst. Recession curve analysis provides a function that quantitatively describes the temporal discharge decay and expresses the drained volume between specific time limits (Hall 1968). This analysis also allows estimating the hydrological significance of the discharge function parameters and the hydrological properties of the aquifer. In this study, we analyze data from perennial springs in the Judean Mountains and from others in the Galilee Mountains, northern Israel. All the springs drain perched carbonate aquifers. Eight of the studied springs discharge from a karst dolomite sequence, whereas one flows out from a fractured, slumped block of chalk. We show that all the recession curves can be well fitted by a function that consists of two exponential terms with exponential coefficients ,1 and ,2. These coefficients are approximately constant for each spring, reflecting the hydraulic conductivity of different media through which the ground water flows to the spring. The highest coefficient represents the fast flow, probably through cracks, or quickflow, whereas the lower one reflects the slow flow through the porous medium, or baseflow. The comparison of recession curves from different springs and different years leads to the conclusion that the main factors that affect the recession curve exponential coefficients are the aquifer lithology and the geometry of the water conduits therein. In normal years of rainy winter and dry summer, ,1 is constant in time. However, when the dry period is longer than usual because of a dry winter, ,1 slightly decreases with time. [source] The establishment of an academic nursing faculty: action research in IsraelINTERNATIONAL NURSING REVIEW, Issue 3 2009D. Arieli phd Aim:, The aim of this paper is twofold: to conceptualize tensions related to the academization of nursing, and to analyse a case study, describing how such tensions were dealt with in the process of establishing a new nursing department. Background:, This paper represents the first stage of a case study of the transformation of a hospital-based nursing school into an academic programme, carried out as a joint venture between a local hospital school and a college in northern Israel. Methods:, This paper is based on action research. The participants were 19 members of the new academic faculty and 3 members of an action research center. Findings:, The three inter-related tensions surfaced in the research process are: (1) the status of nursing and nurses, (2) the role of research and critical thinking in nursing education and practice, and (3) the characteristics of students, who should enrol in and graduate from nursing programmes, or in other words, the character of the ,ideal nurse'. Conclusions:, An action research process enables new teams to put tensions on the table so they can be openly addressed through ongoing reflection, inquiry, learning, evaluation and redesign. [source] Exploring the Intention to React to Aggressive Action Among Israeli AdolescentsJOURNAL OF RESEARCH ON ADOLESCENCE, Issue 3 2007Zeev Winstok The aim of the current study was to explore male and female adolescents' intentions to react to verbal and physical aggression issued by other males and females of the same age. The study is based on a sample of 292 male and female adolescents from 12 classes in four schools in northern Israel, two junior-high and two high-schools, 46.7% were males and 53.3% females. Sixteen short scenarios were presented to the interviewees, consisting of eight verbal provocations (four by males and four by females) and eight physical provocations. The results indicated that girls and boys perceived provocation differently. Males are more "gender oriented," whereas girls are more "content oriented," Males attend more to details of physical aggression, whereas females to details of verbal aggression. Yet, males are most concerned with the gender of the provocateur, whereas females are more attentive to the severity of the provocation, thus differentiating between verbal and physical forms of provocation, as representing different levels of attack, and within each form, differentiating along a continuum of severity of the attack. The results are discussed within the theoretical framework of reactive aggression. [source] Acute stress symptoms during the second Lebanon war in a random sample of Israeli citizensJOURNAL OF TRAUMATIC STRESS, Issue 1 2008Miri Cohen The aims of this study were to assess prevalence of acute stress disorder (ASD) and acute stress symptoms (ASS) in Israel during the second Lebanon war. A telephone survey was conducted in July 2006 of a random sample of 235 residents of northern Israel, who were subjected to missile attacks, and of central Israel, who were not subjected to missile attacks. Results indicate that ASS scores were higher in the northern respondents; 6.8% of the northern sample and 3.9% of the central sample met ASD criteria. Appearance of each symptom ranged from 15.4% for dissociative to 88.4% for reexperiencing, with significant differences between northern and central respondents only for reexperiencing and arousal. A low ASD rate and a moderate difference between areas subjected and not subjected to attack were found. [source] Effects of grazing on geophytes in Mediterranean vegetationJOURNAL OF VEGETATION SCIENCE, Issue 6 2001Imanuel Noy-Meir Zohary & Feinbrun-Dothan (1966,1986) Abstract. The response of geophyte species diversity and frequency of individual geophyte species to cattle grazing was measured at 68 site pairs along fences separating ungrazed from grazed grassland and woodland on different geological formations in northern Israel. Over all site pairs, geophyte species density per 4 m2 was significantly greater in grazed (2.37) than in protected (1.96) sites of the same site pair. There was considerable variation between site pairs in the magnitude and in the direction of the grazing effect. Part of this variation could be explained by differences in site altitude and in geological formation. The positive effect of grazing on geophyte diversity was lower in sites with low productivity. Of 22 geophyte taxa for which sufficient data were available, nine indicated greater frequency in grazed sites compared to only two in ungrazed sites. In 11 other taxa the response was not consistent. A positive response to grazing was most common in geophytes with narrow leaves of the Iridaceae, Liliaceae and allied families. Conservation of the entire geophyte flora in Mediterranean vegetation requires livestock grazing at moderate to high intensities in parts of the area of each community, and light or no grazing in other parts. [source] The effects of cattle grazing on plant-pollinator communities in a fragmented Mediterranean landscapeOIKOS, Issue 3 2006Betsy Vulliamy The main aims of this study were to assess grazing impacts on bee communities in fragmented mediterranean shrubland (phrygana) and woodland habitats that also experience frequent wildfires, and to explain the mechanisms by which these impacts occur. Fieldwork was carried out in 1999 and 2000 on Mount Carmel, in northern Israel, a known hot-spot for bee diversity. Habitats with a range of post-burn ages and varying intensities of cattle grazing were surveyed by transect recording, grazing levels, and the diversity and abundance of both flowers and bees were measured. The species richness of both bees and flowers were highest at moderate to high grazing intensities, and path-analysis indicated that the effects of both grazing and fire on bee diversity were mediated mainly through changes in flower diversity, herb flowers being more important than shrubs. The abundance of bees increased with intensified grazing pressure even at the highest levels surveyed. Surprisingly though, changes in bee abundance at high grazing levels were not caused directly by changes in flower cover. The variation in bee abundance may have been due to higher numbers of solitary bees from the family Halictidae in grazed sites, where compacted ground (nesting resource) and composites (forage resource) were abundant. The effects of grazing on plants were clearest in the intermediate-aged sites, where cattle inhibited the growth of some of the dominant shrubs, creating or maintaining more open patches where light-demanding herbs could grow, thus allowing a diverse flora to develop. Overall, bee communities benefit from a relatively high level of grazing in phrygana. Although bee and flower diversity may decrease under very heavy grazing, the present levels of grazing on Mount Carmel appear to have only beneficial effects on the bee community. [source] RADIOCARBON-DATED DESTRUCTION LAYERS: A SKELETON FOR IRON AGE CHRONOLOGY IN THE LEVANTOXFORD JOURNAL OF ARCHAEOLOGY, Issue 3 2009ISRAEL FINKELSTEIN Summary We present a full-sequence radiocarbon-based chronological system for the Iron Age in the Levant, anchored on the dating of ten destruction layers for the years 1130,730 BC. We establish the sequence using two methods , the ,uncalibrated weighted average' and the Bayesian modelling. Utilizing four dating tools in combination , radiocarbon measurements, field stratigraphy, pottery typology and ancient Near Eastern historical records , facilitates solutions to chronological problems that are far beyond the resolving power of 14C dating alone. The results shed light on disputed issues related to biblical and ancient Near Eastern history, such as the expansion of the early Israelite polity from the highlands to the lowlands; the nature of the Shoshenq I campaign to Canaan; and the evolution of the conflict between northern Israel and Aram Damascus. [source] Dental microwear from Natufian hunter-gatherers and early Neolithic farmers: Comparisons within and between samplesAMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY, Issue 3 2006Patrick Mahoney Abstract Microwear patterns from Natufian hunter-gatherers (12,500,10,250 bp) and early Neolithic (10,250,7,500 bp) farmers from northern Israel are correlated with location on facet nine and related to an archaeologically suggested change in food preparation. Casts of permanent second mandibular molars are examined with a scanning electron microscope at a magnification of 500×. Digitized micrographs are taken from the upper and lower part of facet nine. Microwear patterns are recorded with an image-analysis computer program and compared within and between samples, using univariate and multivariate analyses. Comparisons within samples reveal a greater frequency of pits on the lower part of the facet among the farmers, compared to the upper part. Microwear does not vary over the facet among the hunter-gatherers. Comparisons between samples reveal larger dental pits (length and width) and wider scratches among the farmers at the bottom of the facet, compared to the hunter-gatherers. Microwear does not vary between samples at the top of the facet. The microwear patterns suggest that the Natufian to early Neolithic development led to a harder diet, and this is related to an archaeologically suggested change in food processing. The harder diet of the early farmers may have required higher bite forces that were exerted at the bottom of facet nine, in the basin of the tooth. Am J Phys Anthropol, 2006. © 2006 Wiley-Liss, Inc. [source] Impact of exposure to war stress on exacerbations of multiple sclerosisANNALS OF NEUROLOGY, Issue 2 2008Daniel Golan MD Objective To assess the relation between stress caused by the perils of rocket attack on civilian centers in northern Israel during the 2006 war between Hezbollah and Israel and multiple sclerosis (MS) exacerbations. Methods Participants were 156 patients with relapsing-remitting MS. We compared the number of relapses during and after the war with similar time periods at the preceding year. Exposure to war events and resulting subjective stress were evaluated by means of structured interviews using questionnaires previously validated. Results During the 33 days of the war, there were 18 relapses among our patients, compared with 1 to 6 relapses in similar time periods over the 12 months before the war (p < 0.001,0.02). There was no increase in relapse rate during the 3 months that followed the war (p = 0.58). The percentage of patients reporting the experience of intense subjective stress during the hostilities was significantly greater among patients with wartime relapse compared with the rest of the patients (44 vs 20%). The proportion of patients reporting high levels of distress associated with exposure to rocket attacks, displacement from home, and perceived life threat was greater in relapsing patients compared with those in remission (67 vs 42%, p = 0.05; 33 vs 11%, p = 0.02; and 33 vs 15%, p = 0.08, respectively). Interpretation Our data suggest that civilian exposure to war stress is associated with increased risk for MS relapse. These findings provide insight to stress-related risk factors associated with relapses of MS. Ann Neurol 2008 [source] | ||||||||||||||||