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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.
111

Where the wild things grow : a palaeoethnobotanical study of Late Woodland plant use at Clam Cove, Nova Scotia /

Halwas, Sara J., January 2006 (has links)
Thesis (M.A.)--Memorial University of Newfoundland, 2006. / Bibliography: leaves 105-114. Also available online.
112

Estimativas de parâmetros genéticos para caracteres quantitativos em progênies de Eucalyptus urophylla S. T. Blake /

Souza, Cidinei Santos de. January 2010 (has links)
Resumo: O Eucalyptus urophylla destaca-se pelo potencial de utilização de sua madeira, pela sua plasticidade de adaptação a diferentes condições ambientais brasileiras e por ser tolerante ao cancro do eucalipto (Cryphonectria cubensis). A utilização de sementes melhoradas se faz necessária, considerando o iminente déficit florestal que começou no Brasil, a partir de 2004, em função da demanda por madeira ser maior que a sua oferta. Entretanto, o melhoramento dessa espécie, no Brasil, depende da existência de variabilidade genética das populações introduzidas, a qual evita a ocorrência de depressão endogâmica. O presente trabalho visa o estudo genético de uma população base de E. urophylla, originária de Flores e Timor, e instalada em Selvíria-MS. Estudou - se a variabilidade genética dessa população através de análises quantitativas. Dessa forma, os objetivos específicos do estudo foram: a) estimar a variabilidade genética para os principais caracteres silviculturais; b) estimar possíveis ganhos na seleção, utilizando-se da seleção entre e dentro de progênies e do Índice Multi-efeitos, analisando o efeito do desbaste em uma população base de E. urophylla. O experimento foi instalado em 17 de março de 1992, na Fazenda de Ensino, Pesquisa e Extensão da Faculdade de Engenharia, Campus de Ilha Solteira (FE/UNESP), localizada no município de Selvíria - MS. O teste de progênies foi instalado obedecendo a um delineamento experimental em Látice 8x8, quíntuplo, parcialmente balanceado, com 64 progênies provenientes da Estação Experimental do Instituto de Pesquisas e Estudos Florestais (IPEF/ESALQ/USP), localizada no município de Anhembi - S.P. As parcelas contêm oito árvores, no espaçamento de 3,0 x 3,0 metros. Os caracteres quantitativos avaliados e analisados foram: 1- diâmetro à altura do peito (DAP); 2- altura total da planta (H); 3- tipo de ... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The Eucalyptus urophylla is detached for its wood potential of utilization for its plasticity of plasticity of adaptation in different Brazilian's environmental conditions and for being tolerant towards the eucalyptus canker (Cryphonectria cubensis). The utilization of improved seeds is needed, considering the imminent woodland's deficit that started in Brazil, in 2004, since the heavy Wood demand was higher than it offers. However the improvements of this specie in Brazil, depends on the existence of genetic variability of the installed populations, which avoids the occurrence of endogamous depression. The present report aims at the genetic study of a base population of E. urophylla, originated from Flores e Timor, and installed in Selvíria-MS. Its genetic variability was studied through quantitative analysis. This way, the specific objectives of this report was: a) Guess the genetic variability for the main silvicultural characters; b) Guess possible earnings in the selection, utilizing this selection among and inside the progenies and inside the progenies and the index of multi-effects, analyzing the skive effect in a base population of E. urophylla. The experiment was installed on March 17th of 1992, on the engineering university's farm of teaching, researches, and extension, campus in Ilha Solteira (FE/UNESP), located in Selvíria - MS. The progenies test was installed obeying an experimental delineation in lattice of 8x8, quintuplet, partially balanced with 64 progenies which came from the experimental station in the woodland's institute of researches and studies, (IPEF/ESALQ/USP), located in of Anhembi - SP. The parcels have 8 trees, in a space of 3,0 x 3,0 meters. The evaluated and analyzed quantitative characters was: 1-Diameter at chest's height (DAP); 2-Total plant's height (H); 3-Kind of bark (CAS); 4- Shape of the shank (FOR); 5- Bifurcation; 6- Survival (SOBR) ... (Complete abstract click electronic access below) / Orientador: Miguel Luiz Menezes Freitas / Coorientador: Mario Luiz Teixeira de Moraes / Banca: Pedro Cesar dos Santos / Banca: Ananda Virgínia de Aguiar / Mestre
113

Optimising habitat creation for woodland birds : the relative importance of local vs landscape scales

Whytock, Robin C. January 2018 (has links)
Global land-use change and industrialisation has driven biodiversity declines and impaired ecosystem functioning. Recently, there have been large-scale efforts to not only halt habitat loss but create and restore habitat on formerly managed (e.g. agricultural) land. However, although the effects of habitat loss and fragmentation on biodiversity are well understood, our understanding of how biodiversity responds to habitat created in a patchy configuration is not. In particular, little is known about the relative importance of local (e.g. patch size) vs landscape scales (e.g. amount of habitat in the landscape) for restoring biodiversity in created habitat. Here, a long-term, large-scale natural experiment (the Woodland Creation and Ecological Networks project) was used to understand how bird species, communities and behaviour respond to woodland created in a patchy configuration on post-agricultural land. I used a combination of direct and indirect survey methods to quantify bird diversity, abundance and vocal behaviour in post-agricultural woodlands of known age in Great Britain. I show that secondary woodlands favour generalist species and older patches contain more individuals and species due to their vegetation structure. In relative terms, local-scale factors such as patch size made the greatest contribution to bird diversity and abundance. Colonisation events drive community assembly in new habitat, and I found that large-scale (km2) habitat patterns were more important than patch-level factors during colonisation of breeding territories by a long distance migrant bird (Willow Warbler Phylloscopus trochilus). Land management practices surrounding a habitat patch can also affect its perceived quality and relative attractiveness to potential colonisers. Using the Eurasian Wren Troglodytes troglodytes as a model species, I found that high proportions of agricultural land at woodland edges caused an increase in perceived predation risk. In conclusion, I suggest that post-agricultural woodlands rapidly provide valuable habitat for generalist woodland birds. Local, patch-level factors (area, vegetation structure) also appear relatively more important than landscape factors for woodland bird communities. Land-managers seeking to maximise the benefits of woodland creation for birds should thus focus on creating large patches with a diverse vegetation structure.
114

A Spatial Distribution Analysis of Lithic Artifacts from a Late Archaic-Middle Woodland Site, The County Home Site (33AT40), Athens County, Ohio

Keeling, Kristina L. 11 September 2012 (has links)
No description available.
115

A study of the chronological placement of selected Mississippian-period occupations within the Ackerman unit of the Tombigbee National Forest

Triplett, Andrew Mickens, January 2008 (has links)
Thesis (M.A.)--Mississippi State University. Department of Sociology, Anthropology, and Social Work. / Title from title screen. Includes bibliographical references.
116

Estimativas de parâmetros genéticos para caracteres quantitativos em progênies de Eucalyptus urophylla S. T. Blake

Souza, Cidinei Santos de [UNESP] 31 August 2010 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:29:42Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-08-31Bitstream added on 2014-06-13T18:39:35Z : No. of bitstreams: 1 souza_cs_me_ilha.pdf: 372222 bytes, checksum: a23d8dffc9394536874e4aba2dd0153a (MD5) / Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) / O Eucalyptus urophylla destaca-se pelo potencial de utilização de sua madeira, pela sua plasticidade de adaptação a diferentes condições ambientais brasileiras e por ser tolerante ao cancro do eucalipto (Cryphonectria cubensis). A utilização de sementes melhoradas se faz necessária, considerando o iminente déficit florestal que começou no Brasil, a partir de 2004, em função da demanda por madeira ser maior que a sua oferta. Entretanto, o melhoramento dessa espécie, no Brasil, depende da existência de variabilidade genética das populações introduzidas, a qual evita a ocorrência de depressão endogâmica. O presente trabalho visa o estudo genético de uma população base de E. urophylla, originária de Flores e Timor, e instalada em Selvíria-MS. Estudou - se a variabilidade genética dessa população através de análises quantitativas. Dessa forma, os objetivos específicos do estudo foram: a) estimar a variabilidade genética para os principais caracteres silviculturais; b) estimar possíveis ganhos na seleção, utilizando-se da seleção entre e dentro de progênies e do Índice Multi-efeitos, analisando o efeito do desbaste em uma população base de E. urophylla. O experimento foi instalado em 17 de março de 1992, na Fazenda de Ensino, Pesquisa e Extensão da Faculdade de Engenharia, Campus de Ilha Solteira (FE/UNESP), localizada no município de Selvíria – MS. O teste de progênies foi instalado obedecendo a um delineamento experimental em Látice 8x8, quíntuplo, parcialmente balanceado, com 64 progênies provenientes da Estação Experimental do Instituto de Pesquisas e Estudos Florestais (IPEF/ESALQ/USP), localizada no município de Anhembi – S.P. As parcelas contêm oito árvores, no espaçamento de 3,0 x 3,0 metros. Os caracteres quantitativos avaliados e analisados foram: 1- diâmetro à altura do peito (DAP); 2- altura total da planta (H); 3- tipo de... / The Eucalyptus urophylla is detached for its wood potential of utilization for its plasticity of plasticity of adaptation in different Brazilian’s environmental conditions and for being tolerant towards the eucalyptus canker (Cryphonectria cubensis). The utilization of improved seeds is needed, considering the imminent woodland’s deficit that started in Brazil, in 2004, since the heavy Wood demand was higher than it offers. However the improvements of this specie in Brazil, depends on the existence of genetic variability of the installed populations, which avoids the occurrence of endogamous depression. The present report aims at the genetic study of a base population of E. urophylla, originated from Flores e Timor, and installed in Selvíria-MS. Its genetic variability was studied through quantitative analysis. This way, the specific objectives of this report was: a) Guess the genetic variability for the main silvicultural characters; b) Guess possible earnings in the selection, utilizing this selection among and inside the progenies and inside the progenies and the index of multi-effects, analyzing the skive effect in a base population of E. urophylla. The experiment was installed on March 17th of 1992, on the engineering university’s farm of teaching, researches, and extension, campus in Ilha Solteira (FE/UNESP), located in Selvíria - MS. The progenies test was installed obeying an experimental delineation in lattice of 8x8, quintuplet, partially balanced with 64 progenies which came from the experimental station in the woodland’s institute of researches and studies, (IPEF/ESALQ/USP), located in of Anhembi - SP. The parcels have 8 trees, in a space of 3,0 x 3,0 meters. The evaluated and analyzed quantitative characters was: 1-Diameter at chest’s height (DAP); 2-Total plant’s height (H); 3-Kind of bark (CAS); 4- Shape of the shank (FOR); 5- Bifurcation; 6- Survival (SOBR) ... (Complete abstract click electronic access below)
117

Invasive Plants in Arizona's Forests and Woodlands (Climate Change and Variability in Southwest Ecosystems Series)

DeGomez, Tom 07 1900 (has links)
5 pp. / This is part of the series on climate variability / Climate change appears to have an effect on invasive species in the forests and woodlands of Arizona. Many invasive plants have been documented. Land managers and educators will find this publication informative.
118

Insects, Diseases, and Abiotic Disorders in Southwest Forests and Woodlands (Climate Change and Variability in Southwest Ecosystems Series)

DeGomez, Tom, Garfin, Gregg 08 1900 (has links)
4 pp. / This is part of a series on climate variability and forested ecosystems / Recent events in the forests of the Southwest have prompted scientists to consider the role of climate variability in insect and disease cycles. Over 70 million pine trees along with millions of other conifers died in 2002-03. Average temperature increases of 3°C enabled the MPB at those high elevations to achieve univoltine (having one generation per year) reproduction leading to previously unheard of outbreaks in white bark pine at high elevation sites in Idaho.Aspen defoliation in Arizona and New Mexico averaged ~ 20,375 acres from 1990 to 1997. A series of events has contributed to the decline of aspen since 1997.
119

Blekinges skogsbygd : järnålder till medeltid

Mattisson Olsson, Linda January 2016 (has links)
The woodlands in the north of Blekinge are traditionally seen as an zone without traces of prehistory. Literature discussing the pre-history and early medieval times in Blekinge usually describes the north of the county as a thick unfriendly and impenetrable forest. This is with certainty very easy to believe for someone walking in the thick spruce. Only, in the iron age the forests primarily consisted of beech. It could, naturally, still have been hard to penetrate but a forest consisting of deciduous, gives another basis. The woodlands contains a lot of remains from our history, as ruins from small cottages and cairns who was created during the time when even the woods where an agricultural place. Finds from the pre-history though, are scarce. Though there are some indications that a closer look could pay of.With the neighbouring county's as references there are some features worth checking up on. For one, the thousands of cairns residing in the woods, could, according to investigations performed in Småland, have been started as early as the stone age, though more often in the iron age or the medieval period. There are also interesting finds as "eldslagningsstenar", stones assumed to have been used to get a fire going. Some have been found in Blekinges woodland area and they could indicate that there were human presence during the iron age. To make conclusions in the matter of "were there people living in the northern regions of Blekinge during pre-history?" is not a simple task, but I think there is reasons to stay open minded and to take care to investigate even areas that have got no pre-historical remains previously recorded.
120

Social and Emotional Dimensions of Succession Planning for Family Forest Owners in the Northeastern United States

Schwab, Hallie E. 01 January 2017 (has links)
Keeping forestland intact has emerged as a critical policy objective at state and federal levels. This target has been supported by substantial public investment. The collective impact from the bequest decisions of millions of landowning individuals and families has the potential to affect the extent and functionality of future forests in the United States. Despite a growing body of research devoted to studying these transitions in forest ownership, much remains unknown about how family forest owners make decisions in this arena. The social and emotional dimensions of woodland succession planning have been particularly under-examined. This thesis explores the process of planning for the future use and ownership of woodlands through in-depth analysis of 32 semi-structured interviews with family forest owners in Massachusetts, Maine, New York, and Vermont. The first article investigates how family forest owners evaluate and integrate stories derived from their social networks when planning for the future of their woodlands. Analysis of the themes contained in stories framed as “cautionary tales” revealed common fears surrounding succession planning. The second article explores the complexity of emotional relationships with family forests showing how emotional geographies manifest in the succession planning process. Together, these studies deepen understanding of how family forest owners plan for the future of private woodlands and offer implications for Extension and outreach.

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