Search results for "Population"
showing 10 items of 9945 documents
Galerucella nymphaeae (Col., Chrysomelidae) grazing increases Nuphar leaf production and affects carbon and nitrogen dynamics in ponds.
1990
The grazing effects of the waterlily beetle Galerucella nymphaeae on Nuphar lutea stands were studied in three ponds in Central Finland. Production of floating leaves of N. lutea and growth in the G. nymphaeae population were investigated in the ponds and bioenergetics of the beetle larvae in the laboratory. Combination of field and laboratory data enabled estimation of the effect of the beetle on the production of floating leaves of N. lutea and the consequences of grazing for the input of detritus from Nuphar into the ponds. Adults and larvae of G. nymphaeae consumed 3.0–6.1% of the net annual floating leaf production during the growing period. In addition to consumption losses, feeding a…
Hieracium barrelieri, a new hawkweed species from S Italy, with notes on Tenore’s Hieracium murorum var. barrelieri (Asteraceae)
2015
A new species from Montevergine in Campania, Hieracium barrelieri, is described in detail. It is closest to H. acanthodontoides of H. sect. Acanthodontoidea. H. murorum var. barrelieri, an obsolete taxon described by Tenore, is also discussed, as it was partly based on the same population.
Dental disease in a 17th–18th century German community in Jelgava, Latvia
2012
Aims: To determine the frequency and distribution of dental caries, periapical lesions, the periodontal disease, ante-mortem tooth loss and enamel hypoplasia in a high status, urban post-medieval population from the Duchy of Courland and Semigallia, and to compare these rates with those obtained from contemporary populations from urban and rural Latvian cemeteries. Materials: The sample analysed consisted of the dental remains of 108 individuals (39 male, 42 female and 27 non-adults) excavated from the Jelgava Holy Trinity Church cemetery in Latvia. A total of 1,233 teeth and 1,853 alveoli were examined. Results: The frequency of the observed conditions in this population was overall high b…
Drivers of Competitiveness in European High-Tech Industries
2019
Our paper builds on the importance of high-tech manufacturing and knowledge-intensive services as significant competitiveness and economic growth drivers in the European Union and offers a fresh approach of the study on the competitiveness of secondary and tertiary high-tech industries across EU member states. Our analysis covers the 2008–2015 period and includes twelve old and new EU members. We opt for a balanced panel data approach in OLS and ARIMA frameworks to investigate the competitiveness of high-technology industries in the EU with the aim of uncovering the nature of the main explanatory factors behind their performance. Our results show that the number of persons employed and the …
Genetic differentiation and structure of Hippocrepis valentina (Leguminosae) populations
2000
We present an analysis of isozyme variability in natural populations of the plant species Hippocrepis valentina (Leguminosae), which is endemic to the eastern Mediterranean coast of Spain and currently has endangered species status. Our results, obtained by starch-gel electrophoresis of 15 loci, show normal levels of variability for species with similar biology. The comparison with the patterns of genetic variability of two closely related species, H. balearica and H. grosii, confirms the taxonomic status of H. valentina as a proper species, independent of H. balearica, as previously suggested. The analysis of population subdivision shows that substantial variation among populations is pres…
The role of Dutch in the development of East Anglian English
2013
Dutch speakers may or may not have contributed a certain amount of lexical material to modern East Anglian dialects. There is a much stronger case to be made, however, for arguing that Dutch speakers did have a rather profound infl uence on the morphology of East Anglian English, dating from the time when almost forty percent of the population of the capital of East Anglia, Norwich, were refugees from the Low Countries. That infl uence was indirect, and mediated through mechanisms of linguistic change associated with language contact.
radioterapia para el tratamiento del cáncer en la publicidad de principios del s. XX
2021
El descubrimiento de los rayos X y del radium generó gran curiosidad entre los científicos. Ambos elementos representaban la cura milagrosa que podría tratar una amplia gama de enfermedades mortales, como el cáncer, pudiendo llegar a colmar las expectativas de la población. El objetivo de dicho artículo es analizar las inserciones publicitarias relativas al radium y los rayos X aplicadas para el tratamiento del cáncer, en la prensa española a comienzos del siglo XX (1903-1912), en los periódicos ABC y La Vanguardia. Para ello, a partir de la hemeroteca digital de ambos medios se seleccionaron todas y cada una de las veces que se pudo identificar el término “cáncer” en los anuncios publicita…
Chinese Public Sentiments about Italy during the Sanmen Bay Affair in the Pages of the Shenbao
2015
This paper introduces which was the public sentiment and opinion of the Chinese journalists of the Shenbao in a very relevant period of the history of the relations between Italy and China. We know that China had had a very high opinion of Italy thanks to the magnificent portrait of ancient Italian society, art and culture made by the Jesuit missionaries. But in the selected historical moment, there was a strong change in the way Chinese people felt about the Italian presence in China. Apart from some previous failures of the Italian diplomatic action in China, the Sanmen Bay affairs represents the climax of the inability of Italian diplomacy, so that Chinese people were clearly aware of th…
Translationsstrategien in Texten der Evangelisierung und der indigenen Rechtsprechung in Neu-Spanien
2021
ZusammenfassungThis paper sets out to reconstruct concepts of translation between Spanish and indigenous languages that were prevalent in religious as well as notarial contexts in colonial Mexico (more specifically in a district within the state of Oaxaca) between the sixteenth and eighteenth centuries. To this end, we analyse Christian doctrinal texts translated from Spanish into the Zapotec language by Dominican friars in order to propagate the Christian faith, as well as notarial texts in the form of testaments written in Zapotec by the indigenous population and translated into Spanish in order to be submitted as evidence in court. We pay particular attention to the use and translation o…
About the Influences of Some Major Biotic Drivers on the Population Dynamics in Host-parasite Systems: Interpretative Lessons from an Extended Nichol…
2020
Population dynamics within host-parasite systems in insects is governed by a series of factors, both endogenous and exogenous. Among them, five factors may be considered as major drivers: the respective inherent rates of increase of the host and of the parasite, the level of resource available to the host, the respective immigration rates of the host and of the parasite. While only the first two (the inherent rates of increase of host and parasite) are considered in the original Nicholson and Bailey model, an extended version of the model includes also the other three parameters, thus providing a broader (although still schematic) approach to the host-parasite population dynamics. A brief a…