Search results for "ECOSYSTEM"
showing 10 items of 1752 documents
Describing urban soils through a faceted system ensures more informed decision-making
2016
Urban areas are increasing worldwide at a dramatic rate and their soils definitely deserve more attention than they have received in the past. In urban environments, soils potentially provide the same ecosystem services as in rural and wild environments, although in some cases they are depleted of their basic functions, such as when they lose their productive and filtering capacities because of sealing, and become mere supports for infrastructures. In other cases, soils of urban areas acquire new functions that are unique to these environments. Current soil classifications fail to effectively account for the complexity of urban soils and the information that is required for their management…
The interdisciplinary nature of <i>SOIL</i>
2015
Abstract. The holistic study of soils requires an interdisciplinary approach involving biologists, chemists, geologists, and physicists, amongst others, something that has been true from the earliest days of the field. In more recent years this list has grown to include anthropologists, economists, engineers, medical professionals, military professionals, sociologists, and even artists. This approach has been strengthened and reinforced as current research continues to use experts trained in both soil science and related fields and by the wide array of issues impacting the world that require an in-depth understanding of soils. Of fundamental importance amongst these issues are biodiversity,…
Biomineralix (COST action TD0903), 2009-2014: an overview.
2015
Biomineralization is the process by which living systems produce minerals. At theEuropean scale, this particular scientific field associates researchers of diverse horizons,ranging from zoology, mineralogy, palaeontology, and environmental sciences to materialssciences, dentistry and bone surgery. In this context, the COST Action TD0903, also referredas Biomineralix, was set up in November 2009 under the auspices of the COST Office inBrussels. This scientific network was active during four and half years, until May 2014. Itassociated 17 European countries, and a total of 29 laboratories. Its main objectives weremultiple: 1. To promote biochemical and proteomic research on the biomineralisat…
The microbiology of Lascaux Cave.
2010
Lascaux Cave (Montignac, France) contains paintings from the Upper Paleolithic period. Shortly after its discovery in 1940, the cave was seriously disturbed by major destructive interventions. In 1963, the cave was closed due to algal growth on the walls. In 2001, the ceiling, walls and sediments were colonized by the fungus Fusarium solani. Later, black stains, probably of fungal origin, appeared on the walls. Biocide treatments, including quaternary ammonium derivatives, were extensively applied for a few years, and have been in use again since January 2008. The microbial communities in Lascaux Cave were shown to be composed of human-pathogenic bacteria and entomopathogenic fungi, the for…
The Role of Entrepreneurship Education in Fostering Entrepreneurial Intentions and Performances: A Review of 30 Years of Research
2018
espanolMuchos academicos han enfatizado en las fuertes relaciones entre el emprendimiento, el trabajo independiente y el crecimiento del mercado laboral en la sociedad contemporanea. En todo el mundo se han disenado varios programas academicos y de entrenamiento a fin de aumentar la propension al emprendimiento. Este articulo busca mostrar las evidencias empiricas acerca de los efectos de los programas educativos de emprendimiento sobre el atractivo percibido y la viabilidad percibida de la iniciacion de una nueva empresa, los activos de capital humano relacionados al emprendimiento y los resultados del emprendimiento. Se han analizado los moderadores que afectan la relacion entre la educac…
The effects of corruption in entrepreneurial ecosystems on entrepreneurial intentions
2019
Although researchers have identified corruption as a factor capable of affecting the entrepreneurial ecosystem at the national level of analysis, scholars have reported conflicting results regarding the exact nature of the relationship between corruption and entrepreneurial intentions. This paper formulates some propositions about the complex relationship between corruption and entrepreneurship at different levels of analysis and it suggests and explores the socio-cultural consequences of such domains&rsquo
Environmental Quality and Entrepreneurial Activity in Rural Tourism in Italy
2012
We estimate the relation between environmental quality and services in rural tourism in Italy. We use the average number of firms per region in 2003-07 to indicate entrepreneurial activity. We suggest that heterogeneity among administrative regions can be tied to environmental quality. Incorporated farms in rural tourism are relatively more common in regions with better environmental quality, and command higher average price from better quality in hospitality. Only 7% of entrepreneurial activity can be attributable to environmental quality. We conclude that rural tourism activity in Italy is not genuinely tied to environmental quality.
Entrepreneurial Marketing in Small Firms: A Comparative Study of Small Software Technology Firms in Central Finland, Wales, UK and Silicon Valley, US
2014
This paper reports on present research of Entrepreneurial Marketing (EM) in small software technology firms (SSTFs) in order to investigate and compare the effects of ecosystems in three different countries and, the effect this has on a firm’s EM orientation and, on business growth. Firms today operate in a business environment characterized by increased risk and decreased ability to forecast while markets are uncertain, are fragmenting and becoming frictionless. Hence, firms interact as competitors, customers, and collaborators in a global, knowledge economy. Such changes have had an effect on marketing (Schindehutte, Morris and Pitt 2008) and reflect the type of marketing practiced in sma…
The role of plant species on runoff and soil erosion in a Mediterranean shrubland.
2021
Shrubland is a Mediterranean biome characterized by densely growing evergreen shrubs adapted to fire events. To date, scientific research has focused on the impact of vegetation on soil erosion mainly through the control that plant biomass or plant cover exerts on sediment delivery and runoff discharge, being the individual plant species influence on hydrological and erosional processes not achieved in detail. The objective of this research is to determine: i) runoff and soil losses in a shrubland-covered rangeland at Sierra de Enguera, Spain; and ii) how four plant species affect soil and water losses. We measured soil cover, soil properties, runoff discharge and sediment yield under natur…
Rare earths and trace elements contents in leaves: A new indicator of the composition of atmospheric dust
2017
The relationship between the trace element distribution in atmospheric particles and leaves of some exposed plants in the environment was recently demonstrated. This indication would suggest that the trace element analysis of leaves in these plants could provide information about the composition, nature and origin of the atmospheric dust dispersed in the environment. In order to corroborate this hypothesis, the distribution of trace elements and Rare Earths were studied in leaves of some endemic plants, in the atmospheric fallout and in soils of rural, urban and industrial ecosystems in Sicily. These elements have been chosen to discriminate the source and nature of different source on atmo…