Granivores are important components of sagebrush communities in western North America. These same regions are being altered by the invasion of the exotic annual Bromus tectorum (cheatgrass) that alters physical and biological dynamics in ways that appear to promote its persistence. This research directly relates to the restoration of B. tectorum-dominated systems in two inter-related ways. First, because these landscapes have large quantities of seeds applied during restoration, it is important to determine the major granivore communities in intact sagebrush communities and in nearby cheatgrass-dominated communities. Second, it is important to develop an understanding of patterns of seed harvest by granivores. In addition to the data chapters there are two review chapters; Chapter 1 highlights factors contributing to seed removal and Chapter 7 provides ecologically based techniques that could minimize the negative consequences of granivores during ecological restoration. Common groups of ants showed increased abundances; uncommon species and functional groups were generally negatively impacted by cheatgrass (Chapter 2). Conversely, rodents were negatively impacted by conversion to cheatgrass (Chapter 4). Ant seed removal was highly context-dependent (Chapter 3), depending on the background vegetation (large-scale among-patch effects), foraging distance from the nest mound (small-scale among-patch effects), and the presence of other seed species in mixture (within-patch effects). In addition, cheatgrass provided associational resistance to native seeds in mixture, meaning the presence of cheatgrass increased native seed survival. In Chapter 5 a novel statistical technique in the ecological sciences showed that rodents have marked preferences for some seeds over others and that more seeds were removed in sagebrush compared to cheatgrass-dominated sites, although associational effects among seed mixtures were not detected. In Chapter 6 we show that the amount of seed harvested depended on both intraspecific and interspecific seed density. B. tectorum seeds had associational susceptibility (increased harvest) in the presence of native seeds. Although the reciprocal effect may occur, we did not find statistical support for it. These sets of studies are not only of basic ecological interests, but are also important for developing management strategies for restoration of these degraded lands.

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No. of bitstreams: 1 Marcus de Oliveira Kaufmann.pdf: 2222812 bytes, checksum: 6d75dda58354e1faf67b592daeb0df6d (MD5) Previous issue date: 2012-05-25 / Four themes emerge from the study that is presented in favor of the idea of a associational unionism: the action, on the global ground, of multinational companies; the response of international trade unionism, by its most eloquent actors, towards capital; the ways in which workers can, from the workplace, organize themselves to participate in the governance of the company; and the interrelationship that labour, from the workplace to the international scene, may need to keep to their survival, in an complex environment of collective labour relations, with other types of collective representations of workers, from a non-union nature, assembled by singular means (personnel delegates or elected representatives of workers) or by collective means (committees or commissions of company or factory). The debate about the connections between supposed distant themes provide the material source from which the unions can expect to face the advance of capital, while they can build, from the workplace to the global field, democratic environments for more respectful and equal coexistence between labour and capital. One of the instruments, the study presents, for the union movement, particularly in Brazil, is the idea of a associational unionism, whereby unions, in a vertical orientation, link themselves, with information and experience traffic, by holding minimum rights regarding employee participation in the governance of the company, with various levels through which workers organize from the workplace to the international stage; and, in a horizontal orientation, link themselves, with information and experience traffic through the exploitation of rights of participation in the governance of the company, with collective representations of workers of a non-union nature, from the workplace to the international scene. So far the approach of all those interrelationships is not usual for the industrial relations Law in Brazil, although present though sometimes not so quiet or in a simple manner for the union movement in European countries and to countries seen as the "North", part of the bibliographic references eminently come from European and American perspectives, but not at any time losing the horizon of the political and legal Brazilian scene, as to propose, even in the context of the restrictive Brazilian union model, or beyond that model, new ways for the unionism act and think / Quatro temas afloram do estudo que se apresenta em prol da ideia de um sindicalismo associativo: a atuação, no terreno global, das empresas multinacionais; a resposta do sindicalismo internacional, mediante seus atores mais eloquentes, ao avanço do capital; as formas mediante as quais os trabalhadores podem, desde o local de trabalho, se organizar para participar do governo da empresa; e a inter-relação que o sindicalismo, desde o local de trabalho até o cenário internacional, pode e necessita manter, para a sua sobrevivência, em um ambiente de complexas relações coletivas de trabalho, com outros tipos de representações coletivas de trabalhadores, de perfil unitário e não-sindical, montadas por vias singulares (delegados de pessoal ou representantes eleitos de trabalhadores) ou por vias coletivas (comitês ou comissões de empresa ou de fábrica). O debate em torno das conexões existentes entre supostamente tão distantes temas oferece a fonte material a partir da qual o sindicalismo pode se preparar para enfrentar o avanço do capital, ao mesmo tempo em que pode construir, desde os locais de trabalho até o terreno global, ambientes mais democráticos para a convivência, com maior respeito e equivalência, entre trabalho e capital. Um dos instrumentos que, do estudo, se apresenta para o movimento sindical, particularmente ao brasileiro, é a ideia de um sindicalismo associativo, mediante a qual os sindicatos, em uma orientação vertical, podem estabelecer relações, com tráfego de informações e de experiências, pela exploração de mínimos direitos atinentes à participação dos trabalhadores no governo da empresa, com os diversos níveis por meio dos quais os trabalhadores se organizam desde os locais de trabalho até o cenário internacional; e, em uma orientação horizontal, podem estabelecer relações, com tráfego de informações e de experiências, mediante exploração de direitos de participação no governo da empresa, com representações coletivas de trabalhadores de natureza unitária e não-sindical, desde os locais de trabalho até o cenário internacional. Em razão de a abordagem de todas essas inter-relações não ser usual para o Direito Coletivo do Trabalho no Brasil, embora presente ainda que, por vezes, não tão tranquila para o movimento sindical de países europeus e para os países tidos como do Norte , a pesquisa bibliográfica parte de referências eminentemente europeias e norte-americanas, mas sem, em nenhum momento, perder o horizonte do cenário político e jurídico brasileiro para propor, mesmo em contexto de unicidade, ou para além da unicidade, outra forma de agir e de pensar para o sindicalismo

Qui du phénomène de résistance (RA) ou de susceptibilité (SA) par association est prépondérant en milieu forestier ? En d’autres termes, la défoliation par les insectes herbivores est-elle moins (RA) ou plus (SA) importante sur des arbres hôtes situés en mélange comparés à des monocultures ? A cause des contraintes méthodologiques, les connaissances sur la relation diversité - résistance en forêts matures restent faibles. Pour répondre à cette question, nous avons utilisé le dispositif exploratoire du projet FunDivEUROPE. Sur un réseau de 209 parcelles forestières sélectionnées le long de deux gradients orthogonaux de richesse spécifique (d’une à cinq essences en mélange) et de latitude (de la forêt méditerranéenne à la boréale), nous avons évalué la défoliation des houppiers des arbres. A l’aide d’un échantillon constitué de onze essences différentes, nous avons démontré pour la première fois un patron global de diminution de l’herbivorie (RA) en forêts matures à travers l’Europe. Nous avons également comparé l’herbivorie des insectes dans des placettes constituées de chênes purs ou mélangés à d’autres espèces, placées en lisière ou à l’intérieur de petits bois présents dans les vallées et coteaux de Gascogne. Nous avons observé moins de dégâts foliaires sur les chênes entourés par des voisins hétérospécifiques, et nous avons montré que la magnitude de cette résistance (RA) était plus importante en lisière qu’à l’intérieur des bois. Enfin, nous avons testé cette hypothèse de RA sur une espèce d’herbivore invasif en Italie, le cynips du châtaignier. Basée sur la même approche méthodologique, notre étude a montré de plus faibles dégâts de galles sur les châtaigniers lorsque la richesse spécifique de la parcelle était élevée. Notre travail fournit donc de nouvelles preuves supportant l’hypothèse de RA à travers trois contributions originales : i) la RA existe en forêt mature, ii) quelle que soit l’espèce d’herbivore, iii) y compris sur des espèces exotiques. Ces résultats devraient avoir d’importantes implications pour la gestion des insectes herbivores en forêt puisque le maintien et l’amélioration de la diversité des essences représentent un outil prometteur pour prévenir les dégâts d’insectes. / Whether increasing forest diversity should result in less insect damage (Associational Resistance, AR) or more damage (Associational Susceptibility, AS) is still debated. Moreover little is known about the diversity - resistance relationships in mature forests due to methodological constraints. To answer this question we used the FundivEUROPE exploratory platform. In this network of 209 mature forest plots sampled along two orthogonal gradients of tree species richness (from one to five species mixtures) and latitude (from the Mediterranean to the boreal forest biomes), we assessed insect defoliation in tree crown. Focusing on eleven broadleaved species, we could for the first time demonstrate a global pattern of reduced defoliation (AR) in mature forests across Europe. We replicated the comparison of insect herbivory in pure vs. mixed plots of oak trees, at the edge or within forest patches of the valleys and hills of Gascony. Here we found significantly less damage on oaks surrounded by heterospecific neighbors, and showed that the magnitude of AR was larger at forest edge than in forest interiors. Last we tested the AR hypothesis with an invasive alien species, the Asian chestnut gall wasp, in Italy. Based on the same methodological approach, our study showed lower gall damage on chestnuts when tree species richness was higher in mixed mature stands. Our work therefore provide new evidences to support the AR hypothesis with three original contributions: i) AR does apply to mature forests, ii) irrespective of the identity of insect herbivores, iii) including exotic species. These findings may have important implications for pest management in forest since the maintenance or improvement of tree species diversity represent a promising tool to prevent insect damage.

The objective of my work is to describe associational life in the town of Louny since 1861 to 1914. The years correspond with the year of "October Diploma" issue (1861), resp. the outbreak of World War I. (1914). In the first passages I tried to show the development of the town in the second half of the 19th century and at the beginning of the 20th century from the urbanistic, demographical, industrial and political point of view. All these aspects influenced the associational life there. After the outline of the development of the associational life within the monarchy I aimed at it in Louny. I introduced various types of active notable local personalities in the profiles of Josef Havránek, the representative of the beginning of associational life; long-standing mayor Dr. Petr Hilbert, the owner of the local spa Josef Krýzl and extraordinary socially active woman Mrs Kristýna Ehrlichová. Then I aimed at associational activities in the town. I divided many of the societies into subchapters according to the prevailing orientation: choral dramatic and educational societies, walking and hiking, sport, womens' groups, Jewish associations and amusement societies. Associational life in Louny was influenced by its geographical position, at the Czech-German linguistic border. The town became the hub of...

The characterization of the Markan disciples has been and continues to be the object of much scholarly reflection and speculation. For many, the Markan author's presentation of Jesus' disciples holds a key, if not the key, to unlocking the purpose and function of the gospel as a whole. Commentators differ as to whether the Markan disciples ultimately serve a pedagogical or polemical function, yet they are generally agreed that the disciples in Mark come off rather badly, especially when compared to their literary counterparts in Matthew, Luke, and John. This narrative-critical study considers the characterization of the Markan disciples within the Sea Crossing movement (Mark 4:1-8:30). While commentators have, on the whole, interpreted the disciples' negative characterization in this movement in terms of lack of faith and/or incomprehension, neither of these, nor a combination of the two, fully accounts for the severity of language leveled against the disciples by the narrator (6:52) and Jesus (8:17-18). Taking as its starting point an argument by Jeffrey B. Gibson (1986) that the harshness of Jesus' rebuke in Mark 8:14-21 is occasioned not by the disciples' lack of faith or incomprehension but by their active resistance to his Gentile mission, this investigation uncovers additional examples of the disciples' resistance to Gentile mission, offering a better account of their negative portrayal within the Sea Crossing movement and helping explain many of their other failures. In short, this study argues that in Mark 4:1-8:26, the disciples are characterized as resistant to Jesus' Gentile mission and to their participation in that mission, the chief consequence being that they are rendered incapable of recognizing Jesus' vocational identity as Israel's Messiah (Thesis A). This leads to a secondary thesis, namely, that in Mark 8:27-30, Peter's recognition of Jesus' messianic identity indicates that the disciples have finally come to accept Jesus' Gentile mission and their participation in it (Thesis B). Chapter One: Introduction: offers a selective review of scholarly treatments of the Markan disciples, which shows that few scholars attribute resistance, let alone purposeful resistance, to the disciples. Chapter Two: The Rhetoric of Repetition: introduces the methodological tools, concepts, and perspectives employed in the study. It includes a section on narrative criticism, which focuses upon the story-as-discoursed and the implied author and reader, and a section on Construction Grammar, a branch of cognitive linguistics founded by Charles Fillmore and further developed by Paul Danove, which focuses upon semantic and narrative frames and case frame analysis. Chapter Three: The Sea Crossing Movement, Mark 4:1-8:30: addresses the question of Markan structure and argues that Mark 4:1-8:30 comprises a single, unified, narrative movement, whose action and plot is oriented to the Sea of Galilee and whose most distinctive feature is the network of sea crossings that transport Jesus and his disciples back and forth between Jewish and Gentile geopolitical spaces. Following William Freedman, Chapter Four: The Literary Motif: introduces two criteria (frequency and avoidability) for determining objectively what constitutes a literary motif and provides the methodological basis and starting point for the analyses performed in chapters five and six. Chapter Five: The Sea Crossing Motif: establishes and then carries out a lengthy narrative analysis of the Sea Crossing motif, which is oriented around Mark's use of ‎θάλασσα (thalassa) and πλοῖον (ploion), and Chapter Six: The Loaves Motif: does the same for The Loaves motif, oriented around Mark's use of ἄρτος (artos). Finally, Chapter Seven: The Narrative Logic of the Disciples (In)comprehension: draws together all narrative, linguistic, and exegetical insights of the previous chapters and offers a single coherent reading of the Sea Crossing movement that establishes Theses A and B.

En Belgique, à l’instar d’autres populations d’origine immigrée, les populations d’origine africaine subsaharienne font face à une relative impuissance. Cette dernière peut-être déterminée en fonction de critères tels que l’accès à l’emploi, au logement, à l’enseignement, ou encore le statut juridico-politique. Dans ma thèse, je m’intéresse aux stratégies mises en place par ces populations afin d’améliorer collectivement leur sort. J’articule la question des conséquences sociales et culturelles de la migration en termes de dialectique de l’identification, focalisée notamment sur l’utilisation couramment synonymique des catégories ethno-raciales « africain », « subsaharien » et « noir », avec celle des formes de l’action collective dégagées dans le cadre des social movement studies. Ma réflexion part d’une proposition théorique formulée de façon synthétique par Pnina Werbner et suggérant que, malgré le climat concurrentiel que la formation et l’expansion d’associations ethniques peut générer, leur développement et leur mise en relation constituerait les prémices incontournables d’éventuelles actions collectives protestataires. Pour Pnina Werbner, cette mise en réseau des associations, si elle s’assortit d’un processus de « convergence idéologique », peut donner lieu à des mobilisations. J’ai enrichi cette proposition de deux manières :d’une part, en affinant la notion de convergence idéologique au moyen de la littérature sur le cadrage et le processus d’alignement des cadres dans la mobilisation collective, et, d’autre part, en articulant dans mon analyse les trois courants théoriques centraux des recherches sur des mouvements sociaux – structure des opportunités politiques, mobilisations des ressources, cadres de l’action collective.<p><p>J’ai ainsi montré que le système politique belge était globalement à la fois favorable à l’expression de potentiels mouvements sociaux issus de l’immigration et peu ouvert à leur reconnaissance officielle. J’ai également mis en évidence que les niveaux infra-nationaux et supra-nationaux véhiculaient des opportunités politiques spécifiques. Je me suis ensuite penchée sur la façon dont les différentes opportunités et contraintes politiques mises à jour ont été saisies par deux associations « africaines » soucieuses de former un groupe d’intérêt représentant l’ensemble de la collectivité d’origine africaine subsaharienne, et sur les conséquences organisationnelles de ces choix. Ces études de cas m’ont permis de mettre en exergue le répertoire d’action accommodateur dans lequel ces organisations s’inscrivent, et la relation de leurs membres avec la structure des opportunités politiques. J’ai souligné comment certaines de ces opportunités, dans la façon dont elles ont été réappropriées par les leaders associatifs, ont eu un impact négatif sur la cohésion interne de leurs associations. Aussi, en me penchant plus spécifiquement sur la façon dont les différentes parties prenantes de ces organisations donnent sens aux activités de celles-ci, j’ai montré que les objectifs de ces associations étaient, de façon générale, investis de sens fort différents par les acteurs, y compris au sein des collèges d’administrateurs. Dans la lignée des travaux de Michael Herzfeld, les résultats de ma recherche soulignent la relation disémique inévitable entre la volonté de représentation communautaire officielle et les pratiques internes à la collectivité. Depuis quelques années, les entrepreneurs de représentation de cette collectivité tâchent d’amenuiser cette disémie en engageant leurs associations respectives, rebaptisées « panafricaines », dans des actions collectives. L’analyse de ces actions rend compte de la construction d’un « répertoire symbolique commun » qui se décline autour du référent panafricain et de politiques identitaires pragmatiques. Enfin, j’ai identifié les formes de sociabilité plutôt élitaires du réseau associatif « panafricain » comme une limite de son extension.<p><p>Ces développements empiriques montrent tout l’intérêt d’observer largement « l’espace des mouvements sociaux », c’est-à-dire la trajectoire des organisations et des acteurs susceptibles de donner forme à l’action collective. Ce faisant, mon travail contribue à décloisonner des études sur les mouvements sociaux trop souvent cantonnées aux actions protestataires directement menées contre l’autorité publique. / Doctorat en Sciences politiques et sociales / info:eu-repo/semantics/nonPublished