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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Herpetofauna of the Konza Prairie Research Natural Area in the Flint Hills region of Kansas with respect to habitat selection

Heinrich, Mark L. January 2011 (has links)
Typescript (photocopy). / Digitized by Kansas Correctional Industries
2

Factors determining location and species composition of wet grasslands in Southwest England /

Soest, Francien van. January 2005 (has links)
Univ., Diss.--Plymouth, 2002.
3

Ecological survey and interpretation of the Willamette Floodplain Research Natural Area, W.L. Finley National Wildlife Refuge, Oregon /

Streatfeild, Rosemary. January 1995 (has links)
Thesis (M.S.)--Oregon State University, 1995. / Typescript (photocopy). Includes bibliographical references (leaves 106-111). Also available via the World Wide Web.
4

Tree recruitment dynamics in an urban forested natural area

Bridges, Lee Eric 13 August 2024 (has links) (PDF)
Urban forested natural areas (UFNAs) are the remnants of larger forested ecosystems that have become surrounded by urban land development. Due to their proximity to dense population centers, UFNAs provide levels of ecosystem services disproportionate with their small size. However, stressors on UFNAs, such as fragmentation, invasive species, urban heat islands, soil compaction, altered seed predator populations, and disrupted disturbance regimes, can alter species composition and forest structure such that the continued flow of these ecosystem services is unlikely. Further, management of these systems is confounded by their size and location. While most urban forests are managed using individual tree techniques (arboriculture), UFNAs have too many trees for this approach to be tenable. Likewise, traditional forest management techniques (silviculture) may not be possible due to the relatively small size of UFNAs and their proximity to urban population centers where silvicultural strategies may not be politically acceptable. This dissertation helps inform UFNA management strategies by documenting how species composition and forest structure have changed over time as a result of a mostly laissez-faire management strategy in a UFNA of Memphis, Tennessee. Evidence of the negative impacts of this approach on native tree species can be used by managers to build public support for management interventions. This work also examines potential recruitment barriers for the native overstory species northern red oak (Quercus rubra L). and tulip poplar (Liriodendron tulipifera L.) which provide much of the large tree character in this UFNA. These results can guide specific management strategies to promote these important species. Finally, this research elucidates the potential threat to native plant biodiversity in this UFNA posed by a popular non-native ornamental tree species, cherry laurel (Prunus caroliniana Aiton). The results can aid in the development of appropriate policies regarding this specific tree and similar species in other UFNAs. Combined these studies provide a glimpse into the complicated dynamics and management of this UFNA. Given the widespread nature of the species examined and the methods used, this research may also provide useful insights into UFNA management in the surrounding regions.
5

A Greek Orthodox chapel

Kyrus, Nicholas Byron January 1986 (has links)
My intention is to examine the evolution of early Christian architecture and redefine the role of the building type today, proposing an alternative design for the setting of the liturgy in the Greek Orthodox tradition. / Master of Architecture
6

Habitat selection by small mammals: seasonality of responses to conditions created by fire and topography in tallgrass prairie

Gurtz, Sharon Peterson. January 1985 (has links)
Call number: LD2668 .T4 1985 G87 / Master of Science
7

Artificial avian nest predation in a Kansas tallgrass prairie

Goodman, James R. January 1999 (has links)
Several species of Neotropical migrant songbirds are experiencing declining population numbers. One of many proposed reasons for these declines is the dramatic loss of suitable prairie and grassland nesting habitat in the central United States. The Konza Prairie - a native tallgrass prairie preserve in central Kansas - was used to study possible edge-effect predation of artificial avian ground nests. Two Japanese quail eggs were placed in created artificial nests along transect lines from a wooded edge, a recently burned edge, and a control area. The rate of nest predation after seven days was 16.1 (±12.9%) for the control area. This was taken to represent the typical base level of artificial nest predation for the Konza Prairie. The predation rates for the wooded edge and burned edge were 21.9% (±7.4%) and 18.0% (±6.0%), respectively. These rates were not statistically different from each other or the base level rate of predation. The data suggests that no edge-effect predation occurs for artificial avian ground nests along wooded or burned edges in the Konza Prairie. Predation rates of natural bird nests may be different than these results suggest. It is recommended that future studies identify nest predators and study their foraging behavior near edge habitat. / Department of Natural Resources and Environmental Management
8

The edge effect lateral habitat ecology of an alluvial river flood plain /

Anderson, Michelle Louise. January 2009 (has links)
Thesis (PhD)--University of Montana, 2009. / Title from author supplied metadata. Contents viewed on May 14, 2010. Includes bibliographical references.
9

Fruiting strategies of the woody vine Parthenocissus quinquefolia

Pacey, Carol. January 1985 (has links)
Call number: LD2668 .T4 1985 P32 / Master of Science
10

Les loisirs motorisés hors route. Conflits controverse et réseaux d'actants / Off road motorised recreation : Conflicts, controversy and actor-network

Haye, Lisa 28 November 2012 (has links)
Le développement récent des Loisirs Motorisés Hors Route (LMHR) suscite une controverse et de vives réactions dans les milieux du sport et de la protection de l'environnement. Le phénomène est encore peu étudié, à la fois du fait qu'il est récent, que l'argumentation relève de plusieurs disciplines et que les loisirs motorisés, s'ils font partie sans problème de l'outdoor recreation nord-américaine, sont rejetés en France par les autres sportifs et ne sont pas reconnus de façon évidente comme relevant du domaine d'une discipline particulière. Afin de combler un manque dans la littérature scientifique française, cette thèse vise à apporter une connaissance fine de la dynamique de la controverse – en tant qu'échange d'arguments génériques – et des conflits dont les LMHR font l'objet. Elle présente deux originalités majeures : sa thématique et son approche combinant les théories de l'acteur-réseau avec les outils de visualisation et d'analyse de réseau basés sur la théorie des graphes. Cette construction théorique et méthodologique visait à interroger les interrelations entre la controverse portée par des collectifs présents sur la scène nationale et les conflits et interactions sur le terrain. Pour cela, nous avons mené des enquêtes sur quatre scènes : la scène nationale (composée de collectifs pro et anti-motorisé, de Fédérations, de constructeurs, de gestionnaires et décideurs et d'élus) ; deux scènes locales conflictuelles où des démarches de gestion sont en cours (le PNR du Pilat et les Chambarans) ; une scène locale où aucun conflit n'est visible sur la scène publique (le canton de La Grave – Villar d'Arène). Nos résultats montrent, que bien que la controverse trouve ses racines dans des conflits sur le terrain, il n'existerait pas de coprésence entre acteurs qui s'opposent. D'abord, en l'absence de conflit, la scène de La Grave apparaît déconnectée du reste du réseau. Ensuite, les détracteurs des LMHR se mobilisent dans la controverse mais ne cherchent pas directement à agir sur le terrain. Par contre, les défenseurs de la pratique s'impliquent, eux, aux deux niveaux. Enfin, les gestionnaires et agents de la police de l'environnement confrontés à la gestion des activités, nouent des liens sur le terrain et au niveau national, à la fois avec les défenseurs et les détracteurs des LMHR ; devenant parfois des acteurs-passerelles. D'un point de vue théorique et méthodologique, les outils de visualisation et d'analyse de réseau ont montré leur intérêt dans le cadre d'une approche par l'acteur-réseau ; les perspectives apparaissent riches. Mots-clés : Sociologie, loisirs motorisés hors route, théories de l'acteur-réseau, visualisation et analyse de réseau, controverse, conflits, gestion / The recent expansion of off road motorized recreation raises controversy and strong reactions from the worlds of sports and environmental protection. The phenomenon is still poorly studied, because it is recent, because the argumentation falls across disciplines and because motorized recreation is rejected by other recreationists. Moreover, motorized recreation is obviously not recognized as a domain of a particular discipline in France, whereas it is truly integrated to outdoor recreation in North America. To fill a gap in the French literature, this thesis aims to provide a detailed understanding of the dynamics of the controversy - as an exchange of generic arguments - and conflicts around motorized recreation. The thesis has two main peculiarities: its theme and its approach combining the actor-network theory, visualization tools and network analysis based on graph theory. The aim of this theoretical and methodological building was to examine the interrelationships between the controversy – carried by groups who are present on the national scene – and conflicts and interactions in the field. To do this, we investigated four scenes: the national scene (composed of pro-motorized and anti- motorized collectives, Federations, manufacturers, managers, policy makers and elected officials), two local scenes where conflict management approaches are in progress (NRP Pilat and Chambarans), a local scene where no conflict is visible in the public arena (the township of La Grave - Villar d'Arene). Our results show that although the controversy is rooted in conflicts on the field, there would be no copresence between opposing stakeholders. First, in the absence of conflict, the scene of La Grave is disconnected from the network. Second, critics of motorized recreation rally in controversy but do not try to act directly on the field. By contrast, the defenders of those activities imply them at both levels. Finally, managers and actors in charge of environmental police who face the management of the activities, build relationships in the field and at a national level, with both defenders and detractors of motorized recreation, sometimes becoming gateways actors. From a theoretical and methodological point of view, tools for visualization and network analysis have shown their interest in the context of the actor-network theory: perspectives appear to be rich. Key words : Sociology, off road motorized recreation, Actor-Network Theory, viualization and network analysis, controversy, conflicts, management.

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