scholarly journals Vegetation change and the protection of the Csaroda relic mires, Hungary

2014 ◽  
Vol 61 (1) ◽  
pp. 63-74 ◽  
Author(s):  
Tibor Simon
Keyword(s):  
Vegetation Change ◽  
Climatic Variation ◽  
Forest Growth ◽  
Slight Effect ◽  
Raised Bog ◽  
Qualitative And Quantitative ◽  
The Past ◽  
Drainage Canals ◽  
Human Effects ◽  
Hungarian Plain

Study of vegetation change of the protected mires situated near Csaroda and Beregdaróc (the Great Hungarian Plain) are presented. These are the southermost mires with raised bog communities in the plains of Europe. In the past few decades (by the early 80-s) vegetation showed both qualitative and quantitative signs of degradation. These changes were caused by natural (climatic variation, succesion) and by human effects. Natural changes were following: the decline or extinction of hygrophytes, the expansion of hydromesophytes and mesophytes and the acceleration of forest growth. The most important human-caused change was the drainage of the bogs. The harmful processes had slight effect on the <i>Sphagnum</i>-dominated associations. The "original" (i.e. before drying out) state of mires has been recovered by blocking drainage canals, plantation of a buffor zone and prohibition of using chemicals.

scholarly journals Global acceleration in rates of vegetation change over the past 18,000 years

Science ◽  
2021 ◽  
Vol 372 (6544) ◽  
pp. 860-864
Author(s):  
Ondřej Mottl ◽  
Suzette G. A. Flantua ◽  
Kuber P. Bhatta ◽  
Vivian A. Felde ◽  
Thomas Giesecke ◽  
...  
Keyword(s):  
Vegetation Change ◽  
Terrestrial Ecosystems ◽  
Past Century ◽  
Last Deglaciation ◽  
The Past ◽  
Rates Of Change ◽  
Biodiversity Change ◽  
Human Effects ◽  
The Last Deglaciation ◽  
Global Vegetation

Global vegetation over the past 18,000 years has been transformed first by the climate changes that accompanied the last deglaciation and again by increasing human pressures; however, the magnitude and patterns of rates of vegetation change are poorly understood globally. Using a compilation of 1181 fossil pollen sequences and newly developed statistical methods, we detect a worldwide acceleration in the rates of vegetation compositional change beginning between 4.6 and 2.9 thousand years ago that is globally unprecedented over the past 18,000 years in both magnitude and extent. Late Holocene rates of change equal or exceed the deglacial rates for all continents, which suggests that the scale of human effects on terrestrial ecosystems exceeds even the climate-driven transformations of the last deglaciation. The acceleration of biodiversity change demonstrated in ecological datasets from the past century began millennia ago.

In situ microprobe quantitation of inorganic particle burden in paraffin sections of lung tissue

1988 ◽  
Vol 46 ◽  
pp. 990-991
Author(s):  
Jerrold L. Abraham
Keyword(s):  
Lung Tissue ◽  
Quantitative Information ◽  
Particulate Material ◽  
Paraffin Sections ◽  
Tissue Samples ◽  
Qualitative And Quantitative ◽  
The Past ◽  
Quantitative Analyses ◽  
Data Result

Inorganic particulate material of diverse types is present in the ambient and occupational environment, and exposure to such materials is a well recognized cause of some lung disease. To investigate the interaction of inhaled inorganic particulates with the lung it is necessary to obtain quantitative information on the particulate burden of lung tissue in a wide variety of situations. The vast majority of diagnostic and experimental tissue samples (biopsies and autopsies) are fixed with formaldehyde solutions, dehydrated with organic solvents and embedded in paraffin wax. Over the past 16 years, I have attempted to obtain maximal analytical use of such tissue with minimal preparative steps. Unique diagnostic and research data result from both qualitative and quantitative analyses of sections. Most of the data has been related to inhaled inorganic particulates in lungs, but the basic methods are applicable to any tissues. The preparations are primarily designed for SEM use, but they are stable for storage and transport to other laboratories and several other instruments (e.g., for SIMS techniques).

Attraction of prey

2018 ◽  
Author(s):  
John D. Horner ◽  
Bartosz J. Płachno ◽  
Ulrike Bauer ◽  
Bruno Di Giusto
Keyword(s):  
Visual Cues ◽  
Synergistic Action ◽  
Carnivorous Plants ◽  
Future Research ◽  
Acoustic Cues ◽  
Qualitative And Quantitative Analysis ◽  
Qualitative And Quantitative ◽  
The Past ◽  
The Cost ◽  
Prey Attraction

The ability to attract prey has long been considered a universal trait of carnivorous plants. We review studies from the past 25 years that have investigated the mechanisms by which carnivorous plants attract prey to their traps. Potential attractants include nectar, visual, olfactory, and acoustic cues. Each of these has been well documented to be effective in various species, but prey attraction is not ubiquitous among carnivorous plants. Directions for future research, especially in native habitats in the field, include: the qualitative and quantitative analysis of visual cues, volatiles, and nectar; temporal changes in attractants; synergistic action of combinations of attractants; the cost of attractants; and responses to putative attractants in electroantennograms and insect behavioral tests.

Research on the Changes of Vegetation Coverage in Turks County Based on NDVI

2013 ◽  
Vol 409-410 ◽  
pp. 788-794 ◽  
Author(s):  
Jia Bin Wu ◽  
Jieensi Matan ◽  
Yong Fu Wei ◽  
Ke Zhen Guo ◽  
Xi Wang Lian
Keyword(s):  
Vegetation Change ◽  
Vegetation Coverage ◽  
Annual Change ◽  
Interannual Change ◽  
The Past ◽  
Green Period ◽  
Peak Value

24 periods of 10-day hierarchy schemes of the vegetation coverage of Turks County within 3 years are obtained through inversion, and annual change and interannual change of the vegetation coverage of Turks County are analyzed. The result demonstrates that the average vegetation coverage of the whole county is about 40%~45% during the returning green period, the peak value of the vegetation coverage appears in the last ten days of July, and the highest vegetation coverage of the three years is as high as 60% or above. During the past 12 years, the vegetation change of Turks County is stable-based that accounts for 39.6% of the total area of the county, the area of grassland slightly recovered equals to that of grassland slightly degraded, and the total of both lands is 39.1% of the whole county while the area of grassland significantly degraded accounts for only 8.7%.

Integration

2012 ◽  
Vol 46 (2) ◽  
pp. 190-199 ◽  
Keyword(s):  
Case Studies ◽  
Subject Matter ◽  
Statistical Data ◽  
Cultural Groups ◽  
Cultural Backgrounds ◽  
Qualitative And Quantitative ◽  
The Past ◽  
Immigration And Settlement ◽  
Muslim Communities ◽  
Significant Attention

Are Western Muslims integrating? Can Western Muslims integrate? Over the past 20 years, significant attention has been invested in examinations stimulated by the extensive public commentary addressing such questions. This brief review aims to demystify the examination of Western Muslims’ integration in the interest of re-embedding this subject matter in the broader scholarship about immigration and settlement. Within this expanding field of study, Western Muslims can (and should) be examined at the community level, where specific ethno-cultural groups represent but case studies among hundreds of Western Muslim communities that differ in their immigration context, countries of origin, sects, and ethno-cultural backgrounds. Simultaneously, the collection of statistical data should be used to test hypotheses that are developed in studies of such communities. The dialogue between qualitative and quantitative approaches provides research openings to more rigorously push the state of knowledge in this area, and I describe some of these openings below.

Comparison of Dual-Channel Wavelength and Secondary-Target Energy-Dispersive X-Ray Spectrometers

1986 ◽  
Vol 30 ◽  
pp. 225-236
Author(s):  
John F. Croke ◽  
Joseph A. Nicolosi
Keyword(s):  
List Type ◽  
Qualitative And Quantitative Analysis ◽  
X Ray ◽  
Qualitative And Quantitative ◽  
The Past ◽  
Dual Channel ◽  
Target Energy ◽  
Overall Performance ◽  
Channel Wavelength ◽  
Speed Accuracy

Over the past 30 years, X-ray fluorescence spectrometry has become one of the more valuable methods for the qualitative and quantitative analysis of materials. Today, there are many methods of instrumental analysis available, and among the factors that will be taken into account in the method of selection are: -Accuracy-Range of application-Speed-Sensitivity-ReliabilityNo one technique can provide all of the features that a given analyst requires. XRF does offer good overall performance over the widest range of elements. Speed, accuracy, and versatility are among the features that have made XRF the method of choice for over 15,000 laboratories worldwide.

Culturally Induced Rarity? The Past and Present Distributions of Leucochrysum albicans in Tasmania

1994 ◽  
Vol 42 (4) ◽  
pp. 405 ◽  
Author(s):  
L Gilfedder ◽  
JB Kirkpatrick
Keyword(s):  
Nature Conservation ◽  
Climatic Variation ◽  
Cultural Activities ◽  
The Past ◽  
Local Environments ◽  
Native Pasture ◽  
Local Extinctions ◽  
Infertile Soils ◽  
Improved Pasture ◽  
Ecological Range

Herbarium records indicate that the endangered straw daisy, Leucochrysum albicans (syn. Helipterum albicans), is less widespread and rarer in Tasmania today than in the past. Currently it has a sparse distribution within a relatively wide ecological range, which spans most of the climatic variation in Tasmania, hut which does not include poorly drained or infertile soils. There is evidence of recent local extinctions and invasions. These and the nature of the local environments in which the species occurs indicate that the species requires freedom from competition for the maintenance of its populations. Cultural activities, such as heavy stock grazing or bulldozing, promote its establishment and survival, whereas the establishment of healthy improved pasture or the exclusion of grazing from native pasture tend to lead to its exclusion or demise. The future of the species may thus largely depend on cultural activities that are usually regarded as antipathetic to nature conservation.

scholarly journals Diabetes and people with learning disabilities: issues for policy, practice, and education

2020 ◽  
Vol 25 (1) ◽  
pp. 26-34
Author(s):  
Andrew Maine ◽  
Michael Brown ◽  
Maria Truesdale
Keyword(s):  
Learning Disabilities ◽  
Design Methodology ◽  
Health Needs ◽  
Content Type ◽  
Extant Literature ◽  
Qualitative And Quantitative ◽  
Policy Practice ◽  
The Past ◽  
Quantitative Studies ◽  
Literature Reviews

Purpose The purpose of this paper is to present an overview of the extant literature on diabetes in people with learning disabilities (LD) and discuss implications for policy, practice and research. Design/methodology/approach The key findings are extracted from qualitative and quantitative studies and recent systematic literature reviews. These findings are discussed in the areas of prevalence, treatments and implications. Findings The complex health needs of people with LDs who are diagnosed or at risk of developing diabetes are gaining wider recognition, and recent studies have begun to implement and evaluate potential solutions. Further analysis and alignment between services is required. Originality/value Following a dearth of studies on diabetes in people with LD, the past decade has seen a sudden upsurge in large and diverse set of studies. This paper provides an overview on the extent of this study.

scholarly journals The study on value co-creation behaviour of shared bicycle users

2018 ◽  
Vol 232 ◽  
pp. 01057
Author(s):  
Yashun Zhang
Keyword(s):  
Structural Equation ◽  
Quantitative Methods ◽  
Positive Impact ◽  
Peer Acceptance ◽  
Reliability And Validity ◽  
Equation Model ◽  
Qualitative And Quantitative ◽  
Qualitative And Quantitative Methods ◽  
The Past ◽  
Shared Bicycle

In the past few years, shared bicycles without piles developed so fast, they also experienced problems such as unregulated bicycle parking and unrepaired damaged bicycles. This article’s study about users’ consciously participating in the reporting damaged or illegal vehicles, encourages shared bicycle users’ value co-creation behaviours, and strengthens the interaction between companies and users. This paper uses the combination of qualitative and quantitative methods to analyse the reliability and validity of the collected questionnaires, and uses the structural equation model to test the relevant hypotheses. It draws the conclusion that sense of responsibility, sense of accomplishment, expected revenue, peer acceptance, and self-efficacy have positive impacts on the value co-creation behaviour of shared bicycle users. The value creation behaviour of users has a positive impact on process satisfaction and result satisfaction.

scholarly journals Dendroclimatology in the Eastern Mediterranean

Radiocarbon ◽  
2014 ◽  
Vol 56 (04) ◽  
pp. S61-S68
Author(s):  
Ramzi Touchan ◽  
David M. Meko ◽  
Kevin J. Anchukaitis
Keyword(s):  
Resource Management ◽  
Climate Variability ◽  
20Th Century ◽  
Tree Ring ◽  
Large Scale ◽  
Eastern Mediterranean ◽  
Spatial Scales ◽  
Climatic Variation ◽  
Ring Network ◽  
The Past

Dendroclimatology in the Eastern Mediterranean (EM) region has made important contributions to the understanding of climate variability on timescales of decades to centuries. These contributions, beginning in the mid-20th century, have value for resource management, archaeology, and climatology. A gradually expanding tree-ring network developed by the first author over the past 15 years has been the framework for some of the most important recent advances in EM dendroclimatology. The network, now consisting of 79 sites, has been widely applied in large-scale climatic reconstruction and in helping to identify drivers of climatic variation on regional to global spatial scales. This article reviews EM dendroclimatology and highlights contributions on the national and international scale.

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