Search results for "diversity"
showing 10 items of 3950 documents
Consistent phenological shifts in the making of a biodiversity hotspot: the Cape flora
2011
Abstract Background The best documented survival responses of organisms to past climate change on short (glacial-interglacial) timescales are distributional shifts. Despite ample evidence on such timescales for local adaptations of populations at specific sites, the long-term impacts of such changes on evolutionary significant units in response to past climatic change have been little documented. Here we use phylogenies to reconstruct changes in distribution and flowering ecology of the Cape flora - South Africa's biodiversity hotspot - through a period of past (Neogene and Quaternary) changes in the seasonality of rainfall over a timescale of several million years. Results Forty-three dist…
Alien Insect Impact on Cultural Heritage and Landscape: an Underestimated Problem
2017
The impact of alien invasive insects on cultural heritage and landscapes is very often neglected; even though, more than 50% of species that threaten cultural heritage in Europe are of exotic origin. In addition they are more aggressive. Several examples and a description, are given of the most dangerous alien insects present in heritage sites that constitute a risk for the conservation of cultural property: museum collections, libraries, archives and historic buildings. Globalisation has increased this phenomenon but traces of the accidental introduction of insect pests have occurred since Roman times. The paper discusses the need to implement an estimation of the costs that arise from the…
Ecosystem Services: From Biodiversity to Society, Part 2
2016
SPE Pôle GESTAD; International audience
MANAGEMENT ECOSYSTEM IN DUMBRAVA SIBIULUI FOREST ON THE EVOLUTION OF SPECIES MACROLEPIDOPTERA SIBIU DURING THE YEARS 2000-2012
2014
It was studied the ecology and phenology, the flight periods of the Macrolepidoptera during the period 2000-20012 in the Natural Park „Dumbrava Sibiului”. The natural conditions and the specific features were mentioned in my previous papers (Stancă-Moise, 2000, 2002, 2003, 2004, 2007, 2010, 2011, 2012). There is no doubt that the appearance of the different species of Macrolepidoptera in different periods of time is in a direct relation with the succession of the climatic conditions. The flight periods express the biological specific feature of each species of Lepidoptera, being in direct connection with the activity of feeding and reproduction of imagos.
ANALYSIS OF TOURISTIC DEVELOPMENT POTENTIAL OF SOME NATURA 2000 SITES
2014
This paper performs the analysis of the tourism development potential of two sites in the Natura 2000 network. SWOT analysis concerning the potential of tourism development is made, indicating opportunities for lovers of ecotourism: visitors interested in bird species, visitors interested in flora and fauna. It also describes the potential development of tourism services under the concept of "slow tourism". It describes the possible forms of tourism that can develop in this area, presenting a positive or negative impact on the environment and describe the type of interested visitors. The paper describes the main objectives of tourism development that should be included in the local developm…
Evolutionary genomics can improve prediction of species' responses to climate change
2020
Abstract Global climate change (GCC) increasingly threatens biodiversity through the loss of species, and the transformation of entire ecosystems. Many species are challenged by the pace of GCC because they might not be able to respond fast enough to changing biotic and abiotic conditions. Species can respond either by shifting their range, or by persisting in their local habitat. If populations persist, they can tolerate climatic changes through phenotypic plasticity, or genetically adapt to changing conditions depending on their genetic variability and census population size to allow for de novo mutations. Otherwise, populations will experience demographic collapses and species may go ext…
Diversitat llingüística i educació
2011
Presentem les activitats conjuntes dutes a terme al 2n curs de formació de mestres (Llengua estrangera) per a les assignatures de Lingüística i Llengua espanyola a la Universitat de Santiago de Compostela. Des d'un context universitari d'adaptació a l'Espai Europeu d'Educació Superior i tenint en compte que ens trobem en una comunitat bilingüe, els objectius comuns principals de las nostras programaciós han estat: contrarestar l'excessiva fragmentació entre les matèries lingüístiques, promoure la reflexió sobre la presa de consciència de la diversitat lingüística i cultural, fomentar l'aplicació de les TIC i potenciar el treball col.laboratiu.
Revisión y análisis de las distintas interpretaciones de la interculturalidad en el aula musical
2018
En este artículo se ofrece una revisión de las distintas propuestas de trabajo de la música en contextos educativos pluriculturales. Un análisis en profundidad permite comprobar que el uso de la terminología relacionada con la diversidad cultural es muy libre por parte del profesorado de música, lo que demuestra la necesidad de revisar su formación. Estas experiencias denominadas indistintamente multiculturales y/o interculturales sirven como excusa para presentar como modelo una breve síntesis de la experiencia propia en estos contextos, que sí se ajusta a los principios de la educación intercultural. Se ha intentado mostrar cómo esas interpretaciones de la terminología han llevado a usos …
Homeschooling, freedom of conscience, and the school as republican sanctuary: an analysis of arguments representing polar conceptions of the secular …
2016
This paper examines how stances and understandings pertaining to whether home education is civically legitimate within liberal democratic contexts can depend on how one conceives normative roles of the secular state and the religious neutrality that is commonly associated with it. For the purposes of this paper, home education is understood as a manifestation of an educational philosophy ideologically based on a given conception of the good. Two polar conceptions of secularism, republican and liberal-pluralist, are explored. Republican secularists declare that religious expressions do not belong in the public sphere and justify this exclusion by promoting religious neutrality as an end in i…
Why are defensive toxins so variable? An evolutionary perspective
2012
Defensive toxins are widely used by animals, plants and micro-organisms to deter natural enemies. An important characteristic of such defences is diversity both in the quantity of toxins and the profile of specific defensive chemicals present. Here we evaluate evolutionary and ecological explanations for the persistence of toxin diversity within prey populations, drawing together a range of explanations from the literature, and adding new hypotheses. We consider toxin diversity in three ways: (1) the absence of toxicity in a proportion of individuals in an otherwise toxic prey population (automimicry); (2) broad variation in quantities of toxin within individuals in the same population; (3)…