Grazing is widely used as a tool in conservation management. Many plant communities of conservation importance are dependent on grazing for their existence, maintenance of species diversity and other valued characteristics. Plant community response to grazing depends on many factors, including site productivity and dominant plant species; setting appropriate grazing levels can therefore be challenging. The problems are magnified when more than one species or plant community is the target of conservation goals as they may need different levels of grazing. Where multiple plant communities are present in a mosaic, grazing pressure on the higher productivity community (usually the more attractive to herbivores) can affect the utilisation of the lower productivity communities: grazing on the less productive community is elevated in close proximity (a few metres) to the productive community. This increases the possibility of conflict in managing grazing for the conservation of both communities as low productivity communities can sustain only low levels of grazing. Less well studied are the effect of community layout at larger spatial scales (100s – 1000s of metres) and the effect of vegetation pattern on grazing on the productive community. It is also not well known how the spatial pattern of grazing is affected by changes in herbivore density. I investigated the consequences of the spatial pattern of plant communities and changing herbivore density for grazing patterns on a complex multi-community mosaic and assessed the probable consequence for conservation of these plant communities. The plant mosaic comprised a mixture of species-rich grassland and several less productive communities, primarily heaths and bogs; the main grazers were red deer (Cervus elaphus). The grassland needs higher grazing levels than the others to meet management goals. I used small scale experiments to investigate the effects of reducing grazing on grassland and how the effects varied within the grassland community. Elimination of grazing caused a rapid switch from short, herb-rich grassland towards a graminoid dominated, less diverse sward, as expected. The degree of change in diversity and herb cover was dependent on productivity. Experimental reduction in grazing had mixed consequences for grassland in relation to conservation goals due to pre-existing variation in intensity of grazing on the grassland. The condition of areas of initially heavily grazed and short vegetation improved, whilst taller grasslands deteriorated. Analysis of large-scale datasets was used to investigate the influence of spatial pattern of community types and differences in large scale deer density on the distribution of grazing. There was increased grazing pressure on less productive plant communities where grassland was abundant within 1km and this was fairly consistent across communities and across different grazing indicators. There was an effect on grazing levels on grassland, but the explanatory power was generally lower and the effect less consistently present across indicators of grazing. Sward height and litter depth measures from one dataset indicated heavier grazing with more grassland present nearby (250m); however, lower grazing pressure was indicated by sward height and a combined grazing index when there was more grassland in a more distant zone (500-1000m). Deer density had limited power to explain large scale variation in impacts, probably due to the coarse scale of the information available and correlation with other variables. This limited the ability to thoroughly test the consequences of changes in deer density on the spatial pattern of impacts or investigate whether there was an interaction between deer density and spatial pattern. The inherent conflict in conservation management of grazed communities of different productivities is increased by the influence of the spatial distribution of plant communities on the distribution of grazing; conservation management goals need to account for this and identify a suitable trade-off.

This Master thesis deals with the development, mainly the technological development of the Greek mosaics in the Hellenistic period. Mosaics of the late Classical period are also included in this work as the early Hellenistic mosaic pavements continued to use and improve the late Classical technique. With respect to the technological aspect it is important to describe the production process, sources of which also exist in the ancient literature. The working environment and the organization of the mosaicists or other craftsmen involved can be to some extent reconstructed based on the archaeological finds. The next part of the thesis is concerned with the architectural context, the function and the meaning of the Greek mosaics. Certain hierarchy of the mosaic importance and the meaning can be identified on the basis of their motifs, the technique of the performance and their location inside the building. Furthermore, it is examined, how spaces of private houses changed with mosaics from the late Classical to the late Hellenistic times. In closing there is basic information about the Hellenistic mosaic repertory presented. Keywords mosaics, Greek, Hellenism, Art, Hellenistic, development

Este trabalho consiste numa pesquisa pictórica a partir de uma experiência de contemplação de mosaicos geométricos islâmicos medievais. A pesquisa busca fazer um percurso desde o estudo pictórico da urdidura dos mosaicos, mostrando a natureza de seu ritmo e seu movimento até a elaboração e apresentação de um corpo de trabalhos em desenho e pintura que se apropriam deste movimento \"encapsulado\" nos mosaicos, revelando-os. / This work consists in a pictorical research based on the contemplation of Islamic Medieval Geometric Mosaics. The research comprehends the trajectory from the study of Mosaics\' warp, in which are shown their rithm and movement, towards the preparation and presentation of a corpus of works in design and painting that reveals the countless possibilities of moves \"encapsulated\" in the Mosaics.

Nesse estudo investigou-se a composição faunística de insetos florestais, contrastando a diversidade de fragmentos de mata nativa com reflorestamento. Empregou-se ferramentas analíticas, incluindo as de natureza estatística e também descritiva, capazes de avaliar as diferenças na abundância e riqueza de espécies entre as áreas florestais. Especificamente, comparou-se índices faunísticos entre as diferentes áreas, analisou-se a similaridade das áreas com base na abundância e diversidade de insetos e avaliou-se a distribuição e sobreposição de guildas. A análise de diferentes grupos taxonômicos revelou resultados distintos em termos de abundância, diversidade e riqueza, com significativa dependência dos diferentes habitats. As ordens Hymenopetara e Coleoptera foram influenciadas pela característica da vegetação de cada área de coleta. Nas áreas de mata nativa foram encontrados os maiores valores de diversidade para Hymenoptera e essas áreas foram as que exibiram maior semelhança em relação à composição de espécies. Pinus tecunumannii foi a área com menor diversidade para o grupo. Para espécies da família Cerambycidae esse resultado se repetiu. Para espécies da família Elateridae Eucalyptus urograndis foi a área mais diversa. / In this study, we investigated the entomofauna of forests, confronting native fragments diversity with reforestation. We applied analytical tools, including statistical and descriptive analysis, which are able to assess differences in species abundance and richness among forest areas. Specifically, we compared faunistic indices in different areas, analysed their similarity based on insect abundance and diversity and assessed guild distribution. Different taxonomic groups showed distinct results in terms of abundance, diversity and richness, with significant dependence on habitat. The orders Hymenoptera and Coleoptera were influenced by the vegetation. In native forest we found the highest diversity for Hymenoptera and this area exhibited higher similarity with respect to the species composition. Pinus tecunumannii was the area with the lowest diversity. This result was also observed for Cerambycidade and, for Elateridae Eucalypts urograndis was the area exhibiting the highest diversity.

Orientador: Marco Aurélio Pizo Ferreira / Banca: Alexsander Zamorano Antunes / Banca: Augusto João Piratelli / Banca: José Ragusa Netto / Banca: Mauro Galetti Rodrigues / Resumo: A expansão de plantações florestais tem sido intensificada nos últimos anos, ultrapassando 70.000.000 ha nos trópicos. Eucalyptus é o principal gênero plantado, ocupando 50% das áreas silviculturais. Monoculturas arbóreas e fragmentos de vegetação secundária figurarão entre os principais elementos das paisagens tropicais futuras. Logo, compreender como diversas espécies se comportam diante dessa situação é fundamental quando se objetiva a conservação da biodiversidade. Este trabalho estudou a avifauna em um mosaico composto por talhões de Eucalyptus spp. e alguns de vegetação nativa na Floresta Estadual Edmundo Navarro de Andrade (Rio Claro, SP). Esses talhões possuíam diferentes idades (plantados de 1934 a 1990), extensões (~1-51 ha) e graus de regeneração de vegetação nativa. Os principais objetivos foram caracterizar a avifauna encontrada nesses talhões quanto à riqueza, abundância e composição e compará-las, verificando possíveis associações com a estrutura da vegetação (riqueza, altura, área basal, densidade de plantas, densidade de plantas mortas, cobertura do dossel e densidade vertical nos estratos de 0,0 a 1,0, de 1,1 a 2,0 e de 2,1 a 5,0 m). Para a amostragem de aves foi empregado o método de pontos. No primeiro capítulo, foram amostrados 14 talhões de E. citriodora. Foram registradas 103 espécies de aves, variando de 23 a 55 por talhão. Myiodynastes maculatus, Cyclarhis gujanensis, Amazilia lactea e Megarynchus pitangua mostraram maior plasticidade ambiental, não revelando fortes associações com as variáveis da vegetação. A abundância total foi maior em talhões que apresentavam vegetação mais desenvolvida. Talhões com maior complexidade da vegetação apresentaram maior riqueza e abundância de espécies insetívoras e de dependentes de florestas. A distância entre os talhões de E. citriodora e de vegetação nativa... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The expansion of planted forests is surprisingly fast in the last years, exceeding 70.000.000 ha in the tropics, 50% of which are composed of Eucalyptus spp.. Planted and secondary forests are likely to be dominant features of tropical forest landscapes in the future. Therefore, to understand the use of different species in this situation in basic to the biological conservation. This work investigated the avifauna at a mosaic of Eucalyptus spp. patches in the State Forest Edmundo Navarro de Andrade (Rio Claro, Sâo Paulo, Brazil). These patches (~1-51 ha) were created in different years (1994-1990), presenting different levels of regeneration of the native vegetation. The principal aims were to evaluate the richness, abundance and composition of the bird community associating these parameters to the structure of the vegetation (richness, height, basal area, plant density, dead plant density, canopy cover and vertical density from 0,0 to 1,0, from 1,1 to 2,0 and form 2,1 to 5,0 m). The avifauna was sampled with point counts. In the first chapter, 14 patches of E. citrioddora were studied. It was recorded 103 species, from 23 to 55 per patch. Myiodynastes maculatus, Cyclarhis gujanensis, Amazilia lactea and Megarynchus pitangua were the most habitat generalist species. These species were not associated to any vegetation parameter. The abundance was greater in patches with more developed vegetation. Patches with high vegetation complexity had greater richness and abundance of insectivorous and forest dependent species. The distance between E. citriodora and native vegetation patches influenced negatively the richness and abundance of forest dependent species. In chapter 2, in addition to the 14 E. citriodora patches, four E. microcorys and three native vegetation patches were included in the analyses. It was recorded 115 species. On average, there were 47, 35 and 24 species in the patches... (Complete abstract click electronic access below) / Doutor

Este trabalho consiste numa pesquisa pictórica a partir de uma experiência de contemplação de mosaicos geométricos islâmicos medievais. A pesquisa busca fazer um percurso desde o estudo pictórico da urdidura dos mosaicos, mostrando a natureza de seu ritmo e seu movimento até a elaboração e apresentação de um corpo de trabalhos em desenho e pintura que se apropriam deste movimento \"encapsulado\" nos mosaicos, revelando-os. / This work consists in a pictorical research based on the contemplation of Islamic Medieval Geometric Mosaics. The research comprehends the trajectory from the study of Mosaics\' warp, in which are shown their rithm and movement, towards the preparation and presentation of a corpus of works in design and painting that reveals the countless possibilities of moves \"encapsulated\" in the Mosaics.

Cette thèse est une enquête sur les mosaïques antiques de la Méditerranée occidentale représentant les Travaux d’Hercule entre le IIe et l’IVe siècle ap. J.-C. Elle propose une mise au point archéologique et historiographique et un panorama de l’iconographie de ce mythe en occident, qui sans aucun doute, ne peut être séparé de l’Orient. Six mosaïques sont étudiées provenant des sites différents du pourtour méditerranéen. Il s’agit de décrire puis d'analyser chaque mosaïque, de mettre en évidence les analogies, les différences, les relations et rapports entre elles. L’étude consiste aussi de pouvoir comparer les différentes représentations d’Hercule sur la mosaïque avec d’autres genres artistiques tels que la sculpture, les numismatiques et la céramique de la même époque. Ces comparaisons nous permettent d’avoir une vision plus globale sur la représentation de ce personnage en faisant abstraction du support et en tirer des conclusionsA travers cette analyse, nous trouvons que Héraclès n’appartient pas à une ethnie ou à un peuple. Mais il a une vocation internationale, ce qui explique notamment la place qu’il occupe dans la Méditerranée occidentale. Entre l’Espagne, le Maroc, l’Italie, la France et la Tunisie, une unité dans les représentations du héros se décèle clairement. Parallèlement, il existe des différences importantes liées à la nature même du héros mais aussi au contexte et à l’époque. Au-delà des limites géographiques et temporelles, Héraclès semble symboliser la fondation ; il représente le héros archégète et incarne le pouvoir politique, militaire et religieux. / This thesis is a survey of the ancient mosaics of the western Mediterranean representing the Hercules Labours between the 2nd and 4th century AD. It proposes an archeological and historiographical development and a panorama of the iconography of this myth in the West, which without a doubt, can not be separated from the East. Six mosaics are studied from different sites around the Mediterranean. It is a question of describing then analyzing each mosaic, to highlight the analogies, the differences and the relations between them. The study also consists in comparing the different representations of Hercules on the mosaic with other artistic genres such as sculptures, numismatics and ceramics of the same period. These comparisons allow us to have a more global vision on the representation of this character by disregarding the support and drawing conclusions.Through this analysis, we find that Heracles does not belong to an ethnic group or a people. But it has an international vocation, which explains in particular the place it occupies in the western Mediterranean. Between Spain, Morocco, Italy, France and Tunisia, a unity in the representations of the hero is clearly visible. At the same time, there are important differences related to the nature of the hero but also to the context and the time. Beyond geographical and temporal limits, Heracles seems to symbolize the foundation ; he represents the archetian hero and embodies political, military and religious power.

The purpose of this creative project was to research, build, and replicate portions of the history of the town of Bradford, Ohio in order to create a permanent community monument. Glazed tiles were mounted together to form an artpiece four feet by sixteen feet, preserved for future generations to appreciate and enjoy.Upon completion of research on the community, drawings of area business establishmentswere diligently developed for the clay bas relief tiles, which were sculptured by the artist and his Art I-IV students. Individual clay tiles, composed of terra-cotta stoneware, were bisque fired, underglazed, and refired. To mount the tiles, concrete was applied to sections of plywood (which had been covered with chicken wire). The stoneware tiles were then organized, arranged, and embedded in concrete to create a mosaic mural.The process of the mural forged an unmistakable bond between teacher, students, school, and community. The completed mosaic mural was framed and permanently mounted on location at the Bradford Public Library, 138 E. Main Street, Bradford, Ohio, involving the remodelling of the facility to accommodate the sculpture's size. / Department of Art

Thesis (doctoral)--Université de Paris IV (Sorbonne), 1996. / Includes bibliographical references and index.

Thesis (doctoral)--Université de Paris IV (Sorbonne), 1996. / Includes bibliographical references and index.