scholarly journals Comparative analysis of grassland habitats of Ukraine in terms of richness and diversity

2021 ◽  
pp. 191-196
Author(s):  
A. A. Kuzemko
Keyword(s):  
Species Richness ◽  
Comparative Analysis ◽  
Carbonate Rocks ◽  
Diversity Indices ◽  
Hay Meadows ◽  
Mountain Habitats ◽  
Wet Grasslands ◽  
Evenness Indices ◽  
Almost All ◽  
Grassland Habitats

Using the big dataset (17,687 vegetation plots), a comparative analysis of grassland habitats of Ukraine in terms of species richness, Shannon and Simpson diversity indices and Pielou and Smith-Wilson evenness indices was performed. Leading positions of thermophilous forest fringe and hay meadows, especially mountain ones, in almost all indices were revealed. Instead, halophytic habitats show the lowest rates in the vast majority of analyzes. In addition to these general patterns, the analysis revealed the following trends: in almost all analyzes (except for the values of the Smith- Wilson index) habitats formed on carbonate rocks had greater richness and diversity than those formed on rocks of silicates; in almost all cases (except the Pielou index) oligotrophic wet grasslands were characterized by higher values of richness and diversity than eutrophic ones; in all analyzes, mountain habitats were characterized by higher values of richness and diversity than similar lowland habitats.

scholarly journals A comparison of grassland vegetation from three agri-environment conservation measures

2016 ◽  
Vol 55 (2) ◽  
pp. 176-191 ◽  
Author(s):  
D. Ó hUallacháin ◽  
J.A. Finn ◽  
B. Keogh ◽  
R. Fritch ◽  
H. Sheridan
Keyword(s):  
Species Richness ◽  
Natura 2000 ◽  
Botanical Composition ◽  
Grassland Vegetation ◽  
Hay Meadows ◽  
Grassland Conservation ◽  
Conservation Measures ◽  
Grassland Habitats ◽  
Natural Grassland

Abstract Semi-natural grassland habitats have declined significantly throughout Europe. To halt the decline, grassland conservation measures have been included in most European agri-environment schemes. This is the first study to compare the botanical composition of grassland habitats managed under the Irish Agri-Environment Options Scheme (AEOS). Sixty fields on drystock pastoral farms in receipt of agri-environment payments for grassland conservation were surveyed, with 20 fields being enrolled in each of the following AEOS options: Traditional Hay Meadow (THM), Species-Rich Grassland (SRG) and Natura 2000 species-rich grassland (Natura). The vegetation quality of sites enrolled in the Natura measure was higher than the quality of those enrolled in the THM and SRG measures. Natura sites had the greatest species richness, with a mean >40 species per site, which included approximately 17 species indicative of high botanical quality. Traditional Hay Meadows sites had the lowest species richness (mean: 29 species per site) and were dominated by species associated with improved grassland. Some THM sites had good levels of botanical richness and were similar in composition to Natura sites, with some Natura sites having lower vegetation quality, more similar to that of THM sites. Species-Rich Grassland had botanical richness that was intermediate between THM and Natura sites. A thorough assessment of the effectiveness of these measures was confounded by a lack of quantitative objectives for the target community composition to be attained. We discuss limitations and potential opportunities regarding the design, targeting, implementation and cost-effectiveness of these agri-environment measures.

scholarly journals INDEKS KEANEKARAGAMAN JENIS IKAN DEMERSAL DI PERAIRAN TARAKAN

2015 ◽  
Vol 6 (1) ◽  
pp. 47 ◽  
Author(s):  
Suprapto Suprapto
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Diversity Indices ◽  
Demersal Fish ◽  
Management Policy ◽  
Fishing Ground ◽  
Trawl Fishing ◽  
Data Capacity ◽  
Species Diversity Indices ◽  
Evenness Indices

Perairan Tarakan termasuk daerah penangkapan sumber daya ikan demersal dan udang cukup potensial di KalimantanUtara. Tingginya tingkat eksploitasi ikan demersal dengan menggunakan trawlmenyebabkan keragaman jenisnya rendah. Penelitian ikan demersal dilakukan di perairan Tarakan pada bulanMei,Agustus dan Nopember 2012. Tujuan penelitian adalah untuk memperoleh indeks keanekaragaman jenis ikan demersal. Data spesies ikan demersal dikumpulkan dari hasil tangkapan jaring trawl yang dioperasikan oleh kapal motor 20GT dengan metode sapuan area. Hasil penelitian menunjukkan bahwa jumlah taksa ikan demersal sebanyak 86 spesies yang tergolong kedalam45 famili. Komposisi jenis hasil tangkapan trawl didominasi oleh famili Leiognathidae (ikan petek), Sciaenidae (ikan gulama), Harpadontidae (ikan nomei),Apogonidae (ikan serinding) danMullidae (ikan bijinangka). Status keanekaragaman jenis termasuk dalamkategori sedang dengan indeks “Shanon-Wiener” (H’)berkisar antara 1,7-2,5 sedangkan indeks kekayaan “Margalef” (R1 ) berkisar antara 7-8. Penyebaran spesies ikan demersal bersifat sedang dengan indeks kemerataan jenis (E) rata-rata sebesra 0,5.Kelimpahan ikan demersal tidak ada yang dominan, ditunjukkan oleh nilai indeks kemerataan jenis “Pielou” (E) rata-rata sebesar 0,4.Tarakan and adjacent waters is one of potentially fishing ground of demersal fish resources in north Kalimantan. High exploitation by trawler tend to decreased of biodiversity of demersal fish in this area. Research has been conducted in the waters of Tarakan duringMay, August and November 2012. The aim of this research is to get species diversity indices of demersal fish, which is expected to be useful as one of the data capacity for sustainable fisheries management policy. Data obtained by using trawl fishing gear with a sweept area method.The results showed that demersal fish species richness 86 species, belonging to 45 families. Dominant family are Leiognathidae, Sciaenidae, Harpadontidae, Apogonidae andMullidae. Result of analysis indicate that species diversity in Tarakan waters in the medium category. Status of biodiversity consist of: range value diversityindices “Shanon-Wiener” (H’) was 1.7 to 2.5; species richness indices of “Margalef” (R1 ) are between 7-8; evenness indices of “Pielou” (E 1) was 0,5 and dominant indices “Pielou” (E) an average of 0.4.

Diversity

2009 ◽  
Author(s):  
John S. Gray ◽  
Michael Elliott
Keyword(s):  
Species Richness ◽  
Diversity Indices ◽  
Abundance Ratio ◽  
Number Of Species ◽  
True Diversity ◽  
Species Richness And Abundance ◽  
Evenness Indices ◽  
Number Of Individuals

In the previous chapter we covered ways of describing samples of benthos, but specifically did not include diversity. We can talk of primary community variables, such as abundance (A), species richness (S) and biomass (B), and derived variables from these such as true diversity indices, evenness indices, and ratios indicating the relationship between species richness and abundance (A/S, the abundance ratio or the average abundance per species) and between biomass and abundance (B/A, the biomass ratio or the mean biomass per individual). Diversity is not just simply about the number of species found in a sample or area, but also uses data on the abundances of individuals among the species and the way those abundances are distributed among the species within the assemblage. There are many ways of describing diversity. Here we give a summary of the most important ones and reference sources of recent literature on the subject (see also the data analysis summary in Chapter 11). In the following section we consider simple indices (univariate) as measures of diversity; multivariate methods of analysing patterns will be covered in Chapter 7 on the effects of disturbance. The simplest way to measure diversity is the number of species found in a sample, called the species richness (S or SR). Yet diversity is not just about numbers of species; it is also concerned with the distribution of numbers of individuals per species. For example, if one assemblage has 50 individuals of each of 2 species A and B whereas another assemblage has 99 individuals of species A and 1 individual of species B, then both have the same species richness but the first assemblage is the more diverse. Thus a measure of diversity (an index) must take into account not only the number of species, but also the number of individuals per species. To distinguish this from species richness, the combination of individuals per species and number of species is called heterogeneity diversity. In fact there are a large number of diversity indices, and we do not propose to consider them all here (Magurran 2004 gives an excellent and detailed account and others are mentioned in the summary in Chapter 11).

Aquatic and semi aquatic Hemiptera community of Sonebeel, the largest wetland of Assam, northeastern India

2018 ◽  
Vol 10 (13) ◽  
pp. 12792-12799
Author(s):  
Anupama Saha ◽  
Susmita Gupta
Keyword(s):  
Species Richness ◽  
Pest Control ◽  
Relative Abundance ◽  
Species Distribution ◽  
Diversity Indices ◽  
Environmental Data ◽  
Northeastern India ◽  
Ecological Roles

Aquatic and semiaquatic Hemiptera bugs play significant ecological roles, and they are important indicators and pest control agents.  Little information is currently available concerning its populations in southern Assam.  This study assessed hemipterans in four sites of Sonebeel, the largest wetland in Assam (3458.12 ha at full storage level), situated in Karimganj District.  The major inflow and outflow of the wetland are the rivers Singla and Kachua, respectively (the Kachua drains into the Kushiyara River).  Samples were trapped with pond nets and were seasonally recorded.  This study recorded a total of 28 species of aquatic and semiaquatic hemipterans belonging to 20 genera under nine families.  Population, geographical and environmental data (e.g., rainfall) were used to assess the relative abundance of species, species richness and different diversity indices, and species distribution. 

A Comparative Study on the Noise between Floors of Apartment and Multiplex Housing

2015 ◽  
Vol 752-753 ◽  
pp. 1232-1235
Author(s):  
Ji Hun Kim ◽  
Yoon Seok Shin
Keyword(s):  
Comparative Analysis ◽  
Comparative Study ◽  
Field Measurements ◽  
Apartment Building ◽  
Noise And Vibration ◽  
Korean Government ◽  
Current State ◽  
The Future ◽  
House Type ◽  
Almost All

Since recently almost all housing built in Korean have shared walls and floor, diverse problems are unavoidable including noise between floor arising from noise and vibration. Many efforts have been made by the Korean government, but the number of complaints related with the noise between floors has been gradually increasing. Therefore, through the field measurements by house type, the current state of noise was understood. To do this, the noise between floors was measured in an apartment household and a multiplex house to perform a comparative analysis. As the result, the differences in the noise between the two house types were clarified. The findings of this research are expected to contribute to reduction of the noise between floors in an apartment building in the future.

Field Margin Weed-Species Diversity in Relation to Landscape Attributes and Adjacent Land Use

Weed Science ◽  
2007 ◽  
Vol 55 (2) ◽  
pp. 129-136 ◽  
Author(s):  
Lynn M. Sosnoskie ◽  
Edward C. Luschei ◽  
Mark A. Fanning
Keyword(s):  
Land Use ◽  
Species Richness ◽  
Agricultural Landscape ◽  
Elevation Gradient ◽  
Shape Index ◽  
Diversity Indices ◽  
Weed Species ◽  
Field Margin ◽  
Local Climate ◽  
Modeling Strategy

The importance of managing weeds in seminatural habitats that are adjacent to farm fields is unclear. Weedy-margin vegetation may harbor pests or pathogens and may ALSo serve as source populations for ongoing immigration of weeds into the field. It is ALSo possible, however, that margin vegetation provides habitat for organisms that consume weed seeds or suppress the likelihood of pest or pathogen outbreak. We examined the nature of margin habitat using spatial-scaling of Weed-Species richness as an ecological assay. In 2003, we recorded the occurrence of weedy species along the perimeters of 63 fields in Wisconsin. The fields were distributed within six counties that differed in topography, geological history, local climate, and soil type and which spanned the range of variability in the agricultural landscape. We identified seven habitats that differed in geology and land use. The relationship between species richness and margin class was estimated using an analog of the power law. Additionally, we investigated broadscale correlates of habitat heterogeneity at the field level, using a modeling strategy that included additional explanatory factors logically connected to plant diversity. Using a model-confrontation approach, the survey supported the inclusion of two topographical diversity indices, elevation gradient and a field-shape index, into our model. Our broadscale survey provides information on one of a suite of important considerations needed to make decisions about the importance of managing weeds in field margins.

CHANGING PROFESSIONAL MOTIVATION AMONG NURSING STAFF IN THE PANDEMIC

2021 ◽  
pp. 72-79
Author(s):  
Elizaveta O. Nechaeva ◽  
Keyword(s):  
Health Care ◽  
Comparative Analysis ◽  
Nursing Staff ◽  
Great Majority ◽  
Practical Skills ◽  
World Community ◽  
Personal Motivation ◽  
Coronavirus Infection ◽  
Entire World ◽  
Almost All

The pandemic of the new coronavirus infection, which swept the entire world community in 2020, has made strong adjustments in almost all spheres of life, but first of all, in health care. The great majority of the medical staff at the onset of the pandemic had no clinical experience with the COVID-19 patients. In addition to the lack of practical skills in treatment for the period of the onset of mass infections, doctors faced great physical and emotional stress. The article provides a comparative analysis of the questionnaires results from among nursing staff in SRC Burnasyan FMBC in 2018 and 2020. The research results show that in the process of treatment and rehabilitation of pa- tients with COVID-19 in the professional motivation of doctors some changes took place towards personal motivation associated with serving and helping people.

scholarly journals Abundance, diversity and distribution of macrophyte communities in neighboring lakes of different trophic states and morphology in north-central Greece

2011 ◽  
Vol 63 (3) ◽  
pp. 763-774 ◽  
Author(s):  
Chrisoula Pirini ◽  
Vasiliki Karagiannakidou ◽  
Savvas Charitonidis
Keyword(s):  
Environmental Factors ◽  
Aquatic Vegetation ◽  
Floristic Composition ◽  
Diversity Indices ◽  
North Central ◽  
Wetland Ecosystems ◽  
Central Greece ◽  
Clear Differentiation ◽  
Evenness Indices

The role of aquatic vegetation in wetland ecosystems is closely related with their abundance, diversity and distribution, which in turn represents synergy of various environmental factors. The floristic composition of the aquatic vegetation in two neighboring lakes (Vegoritida and Petron) in north-central Greece was investigated by means of 160 relev?s, which were recorded using the Braun-Blanquet method. The analysis of relev?s based on TWINSPAN clustering showed the existence of 10 plant communities from the Lemnetea, Potametea, Phragmito-Magnocaricetea and Juncetea maritimi classes. The most important environmental factors for the vegetation differentiation in the study area, according to the ordination diagram, are light intensity and water depth of the habitats. The plant species diversity was quantified with species richness, Shannon Diversity and evenness indices at a scale of each relev?, with a sampling size of 20 m2. There was a clear differentiation between the relev?s at the more eutrophic Petron Lake and those at Vegoritida Lake. The mean plot diversity was also calculated for each plant community, to enable comparison of the diversity indices among the communities at the plot level.

scholarly journals Tratamiento del azúcar en la prensa digital española: análisis comparativo

2020 ◽  
pp. 291-304
Author(s):  
Flora Marín-Murillo ◽  
José-Ignacio Armentia-Vizuete ◽  
Iñigo Marauri-Castillo ◽  
María-del-Mar Rodríguez-González
Keyword(s):  
Comparative Analysis ◽  
Health Issues ◽  
Online Newspapers ◽  
The Media ◽  
The Subject ◽  
Almost All ◽  
Sobre Todo

Sugar was a topic of interest for the Spanish online press during 2017 and 2018. This is demonstrated by the 245 texts that were published in five online newspapers: abc.es, elpais.com, elconfidencial.com, eldiario.es, and lavanguardia.com. This study focuses on a comparative analysis of the informational treatment, relevance, themes, frames, comments, and stylistic resources that each of these media displayed. The quantification and evolution of the content corroborate that this topic is consolidated on the news agenda of the media and has been evolving towards the themes of Nutrition/Health, to the detriment of content in the field of Economy/Politics. Looking at the most relevant frames, nuances are observed in each of the newspapers studied. When the subject of sugar is approached from an economic or political angle, all the media highlight the frame of solutions/measures, whether they be corporate or institutional. However, abc.es and lavanguardia.com also place emphasis on the Conflict frameworks, which is hardly relevant for the rest. The emphasis is placed on the Evidence/Revelation frameworks in the texts about Nutrition/Health, except again for abc.es, which prioritized the Consequences frameworks. Almost all the newspapers use resources close to service journalism, and a pedagogical vocation emerges from the headlines. Above all, abc.es and (to a lesser extent) elconfidencial.com use a more informative tone. Readers’ comments are very scarce despite the tone of complaint and alarm of much of the content, focusing on Nutrition/Health issues, on elpais.com and eldiario.es. Resumen Durante los años 2017 y 2018 el azúcar fue un tema de interés para la prensa digital en España. Así lo demuestran los 245 textos que se insertaron en cinco diarios digitales: abc.es, elpais.com, elconfidencial.com, eldiario.es y lavanguardia.com. Este estudio se centra en el análisis comparativo del tratamiento informativo, relevancia, temáticas, encuadres, comentarios y recursos estilísticos que cada uno de los medios desplegó. La cuantificación y evolución de los contenidos corrobora que se trata de un asunto asentado en la agenda informativa de los medios y que ha ido derivando hacia las temáticas de Nutrición/Salud, en detrimento de los contenidos de Economía/Política. Si nos fijamos en los encuadres más relevantes, se observan matices en cada uno de los diarios estudiados. Cuando se aborda el tema del azúcar desde la economía o la política, todas las cabeceras destacan el enfoque de Soluciones/medidas, sean estas corporativas o institucionales. Sin embargo, abc.es y lavanguardia.com pusieron también el énfasis en los marcos de Conflicto, apenas relevantes en el resto. En los textos sobre nutrición y salud se pone el acento en los marcos de Evidencia/Revelación, a excepción de nuevo de abc.es, que priorizó los marcos de Consecuencias. Casi todos los diarios emplean recursos cercanos al periodismo de servicio, y de los titulares se desprende una vocación pedagógica. Sobre todo abc.es y, en menor medida, elconfidencial.com utilizan un tono más informativo. Los comentarios de los lectores son muy escasos pese al tono de denuncia y alarma de muchos contenidos, concentrándose en las temáticas de nutrición y/o salud en elpais.com y eldiario.es.

Forty years of dietary studies on barn owl (Tyto alba) reveal long term trends in diversity metrics of small mammal prey

2018 ◽  
Vol 68 (2) ◽  
pp. 129-146 ◽  
Author(s):  
Giuliano Milana ◽  
Luca Luiselli ◽  
Giovanni Amori
Keyword(s):  
Species Richness ◽  
Relative Abundance ◽  
Negative Correlation ◽  
Linear Models ◽  
Prey Availability ◽  
Diversity Indices ◽  
Barn Owl ◽  
Tyto Alba ◽  
Local Conditions ◽  
Over Time

AbstractThe diet of predators is influenced by local conditions (e.g., characteristics of habitat and microhabitat, seasonality, prey availability) and therefore tends to change across time. In this paper, the diet composition of the barn owl (Tyto alba) in Italy was studied using a meta-analysis of 47 articles (covering 212 independent sites, with multiple surveys for some sites, thus giving a total of 290 datasets) between 1972 and 2012. General Linear Models were used to assess the effects of year and study site on four distinct diversity indices (species richness, dominance, Shannon-Weaver diversity and equitability). The year of data collection was a factor used in all analyses. Year had a greater effect than study site on all diversity indices, but the effect was not significant for the evenness and the species richness. However, dietary dominance increased significantly over the years, the Shannon-Weaver index of diversity decreased significantly over time, and equitability also decreased significantly over time. The relative abundance of various species of rodents did not increase/decrease progressively over the years, although there were inter-annual fluctuations. On the other hand, the relative abundance of insectivores tended to decrease with time, and there was a significantly negative correlation between year and the frequency of consumption of Sorex spp. and a marginally significant negative correlation for Crocidura leucodon.

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