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Dissertations / Theses on the topic 'Forest shrubs'

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1

Peterson, Thomas E. "FACTORS AFFECTING DENSITIES OF WHITE-TAILED DEER (ODOCOILEUS VIRGINIANUS) IN EASTERN DECIDUOUS FOREST: THE ROLES OF AND SURROUNDING LAND USE, FOREST HABITAT EDGE, AND INVASIVE SHRUBS." Miami University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=miami1526295117069628.

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2

Mottl, Erik Charles. "Oak forest decline and effects of two invasive shrubs in the Midwest Driftless Area current status and implications for the future /." [Ames, Iowa : Iowa State University], 2007.

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3

Pippen, Brendan Gerard Physical Environmental &amp Mathematical Sciences Australian Defence Force Academy UNSW. "Fuel moisture and fuel dynamics in woodland and heathland vegetation of the Sydney Basin." Awarded by:University of New South Wales - Australian Defence Force Academy. School of Physical, Environmental and Mathematical Sciences, 2008. http://handle.unsw.edu.au/1959.4/38697.

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The vegetation of the Sydney Basin, Australia, is highly flammable and subject to a wide range of fire regimes. Sclerophyllous shrubs and sedges are common and in some vegetation types up to 70 % of fuel consumed during a fire can be live. Research into fire behaviour and fuel dynamics has been minimal. To address this issue this thesis investigated the principal factor affecting the ease of ignition and rate of combustion of individual fuel particles and fuel beds in bushfires: dead fine fuel moisture (FFM). Two common Sydney Basin vegetation types, eucalypt woodland and heathland, each with
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4

Hoven, Brian Michael. "The Effect of Emerald Ash Borer (Agrilus Planipennis)-Caused Ash Mortality and White-Tailed Deer Abundance on Understory Invasive Shrubs and Forest Regeneration." Miami University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=miami1627656584529987.

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5

Foresto, Eduardo Brandolise. "Levantamento florístico dos estratos arbustivo e arbóreo de uma mata de galeria em meio a campos rupestres no Parque Estadual do Rio Preto, São Gonçalo do Rio Preto, MG." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/41/41132/tde-16062008-151711/.

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Nos últimos anos, diversos estudos têm sido realizados em matas ciliares pelo Brasil devido, principalmente, ao crescente desmatamento que aí ocorre associado à percepção da importância dessas matas para o equilíbrio do ambiente. Apesar disso, pode-se considerar que ainda são poucos os estudos sobre composição florística das matas ciliares do bioma cerrado. O presente trabalho consiste no levantamento florístico de espécies arbustivas e arbóreas da mata de galeria do Capão Azul, situada em meio a campos rupestres, no Parque Estadual do Rio Preto, município de São Gonçalo do Rio Preto, MG, reg
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6

Petersen, Sheryl M. "Vegetation dynamics and the efficacy of prescribed fires in restoring oak-dominated ecosystems in southern Ohio." Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1318087928.

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7

Hartman, Kurt M. "The Impacts, Invasibility, and Restoration Ecology of an Invasive Shrub, Amur Honeysuckle (Lonicera maackii)." Ohio : Ohio University, 2005. http://www.ohiolink.edu/etd/view.cgi?ohiou1133734744.

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8

Lawrence, Jessica. "Impact of the invasive shrub Lonicera maackii on shrub-dwelling arthropods in an eastern deciduous forest." University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1289234685.

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9

Ratliff, William Seth. "Demography and Disease of the Rare Shrub Buckleya distichophylla (Santalaceae) in Northeastern Tennessee." Digital Commons @ East Tennessee State University, 2015. https://dc.etsu.edu/honors/304.

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Piratebush (Buckleya distichophylla (Nutt.) Torr.) is a rare, hemiparasitic shrub with the only extant populations in western North Carolina, northeastern Tennessee, and southwestern Virginia. The preferred natural hosts of piratebush, Carolina and eastern hemlocks, have seen sharp declines over the last decade due to the invasive hemlock woolly adelgid. Virginia pine, another important host of piratebush, is also susceptible to disease, specifically Cronartium appalachianum, a rust fungus for which piratebush is the secondary host. This study described and analyzed current demographic paramet
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10

Wilfong, Bryan N. "Detecting an invasive shrub in deciduous forest understories using remote sensing." Oxford, Ohio : Miami University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=miami1217288997.

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11

Dell'Orfano, Michael E. "Fire Behavior and Fuel Modeling of Flammable Shrub Understories in Northeastern Pine-Oak Forests." Digital WPI, 2004. https://digitalcommons.wpi.edu/etd-theses/1070.

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"This thesis evaluates the effectiveness of BEHAVE: Fire Behavior Prediction and Fuel Modeling System in predicting fire behavior in the Northeastern pine-oak forest. This fuel complex is composed primarily of a litter and huckleberry shrub understory with a pitch pine and oak overstory. Measurements of fuel bed physical characteristics, weather and fire behavior are taken from a series of prescribed burn studies in Cape Cod National Seashore in Massachusetts. Site-specific fuel models are constructed which provide the necessary inputs for fire predictions. Observed spread rates and flame leng
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12

Borgmann, Kathi L. "Invasion of riparian forests by exotic shrubs: effects of landscape matrix and implications for breeding birds." The Ohio State University, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=osu1399558713.

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13

Beier, Colin Mitchell. "The Influence of Dense Understory Shrubs on the Ecology of Canopy Tree Recruitment in Southern Appalachian Forests." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/34000.

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Suppression of canopy tree recruitment beneath rapidly spreading thickets of Rhododendron maximum L. (Ericaceae) in southern Appalachian forests is an issue of major concern because of the potential impacts on forest productivity, hydrology and wildlife habitat. Many studies have investigated the causes of seedling inhibition beneath dense shrub understories, but few have uncovered specific mechanisms leading to seedling decline. In this study, I have examined the influence of the evergreen understory (R. maximum and Kalmia latifolia L.) on tree recruitment processes at multiple stages - s
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14

Baumer, Marilyn Cabrini. "Tree Seedling Establishment Under the Native Shrub, Asimina Triloba." Wright State University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=wright1183587955.

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15

Haraguchi, Takashi. "Changes in diet of shrub spiders during a forest secondary succession, revealed by isotope measurements." 京都大学 (Kyoto University), 2013. http://hdl.handle.net/2433/180372.

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16

Guiterman, Christopher, and Christopher Guiterman. "Climate and Human Drivers of Forest Vulnerability in the US Southwest: Perspectives from Dendroecology." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/622981.

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The ongoing drought in the US Southwest (SW) has led to particularly large and severe wildfires, tree die-off events, insect outbreaks, and increased forest stress levels. These disturbances underscore the vulnerabilities of SW dry conifer forests to climate change and past land-uses. Climate projections show a clear upward trend in regional temperatures, which will lead to accelerated heat-related stressors and disturbances in the coming decades. Already, more than 20% of the dry conifer forests of the SW have been severely impacted. This number is likely to grow, but we lack a clear picture
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17

Gopalakrishnan, Ranjith. "Large-area forest assessment and monitoring using disparate lidar datasets." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/84856.

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In the past 15 years, a large amount of public-domain lidar data has been collected over the Southeastern United States. Most of these acquisitions were undertaken by government agencies, primarily for non-forestry purposes. That is, they were collected mostly to aid in the creation of digital terrain models and to support hydrological and engineering assessments. Such data is not ideal for forestry purposes mainly due to the low pulse density per square meter, the high scan angles and low swath overlaps associated with these acquisitions. Nevertheless, the large area of coverage involved moti
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18

Shiflett, Sheri. "PHYSIOLOGICAL MECHANISMS OF SHRUB ENCROACHMENT: LINKING ENHANCED HYDRAULIC CAPACITY TO EFFICIENT LIGHT CAPTURE AND PROCESSING." VCU Scholars Compass, 2013. http://scholarscompass.vcu.edu/etd/3208.

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Woody plant expansion has been documented for decades in many different ecosystems, often due to anthropogenic disturbances to the environment and yielding vast changes in ecosystem functioning. While causes and consequences of woody expansion have been well documented, few studies have investigated functional traits of woody species that promote rapid expansion in range. My objective was to determine if hydraulic efficiency confers enhanced photosynthetic efficiency so that functional traits representing light and water use may be possible mechanisms facilitating woody encroachment into gra
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19

Minnick, Michael John. "The roles of forest fragments and an invasive shrub in structuring native bee communities and pollination services in intensive agricultural landscapes." Miami University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=miami1581000018403528.

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20

Aquilani, Steven M. "The effects of prescribed surface fire on ground- and shrub-nesting nearctic migrants at Fork Ridge, Hoosier National Forest, 1996 and 1997." Virtual Press, 1998. http://liblink.bsu.edu/uhtbin/catkey/1101587.

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During autumn 1993, the U. S. Forest Service began implementing a program of prescribed surface fire in the Fork Ridge region of Hoosier National Forest. To determine the effects of the prescribed surface fire on ground- and shrub-nesting nearctic migrants, I conducted vegetation structure sampling, bird abundance surveys, and nest searches during the 1996 and 1997 breeding seasons. The prescribed surface fire drastically reduced understory vegetative cover from 0.0 to 2.5 m above ground and the density of live stems < 5.0 cm dbh. Herbaceous cover < 0.5 m tall in the burned site returned to le
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21

Peebles-Spencer, Jessica Rene. "Interactions between invasive shrub, Lonicera maackii, and a generalist herbivore, White-tailed deer, in Southwestern Ohio forests." Miami University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=miami1461269925.

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22

Polisel, Rodrigo Trassi 1986. "Análise fitossociológica do sub-bosque de florestas com araucária e sua relação fitogeográfica com outras formações da Floresta Atlântica s.l." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/315210.

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Orientador: Kikyo Yamamoto<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-08-19T19:37:53Z (GMT). No. of bitstreams: 1 Polisel_RodrigoTrassi_M.pdf: 6584515 bytes, checksum: 2fed8a2ee1f4e876bf20ab3234436559 (MD5) Previous issue date: 2011<br>Resumo: O foco desta dissertação é o sub-bosque da floresta com araucária. Estudos com o seu componente arbóreo têm mostrado que esta formação possui uma área core no sul do Brasil, com limite no sul do estado de São Paulo. Entretanto, ainda não se sabe se o componente de sub-bosque
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23

Lawlor, Sarah E. "Using Advanced Land Imager (ALI) and Landsat Thematic Mapper (TM) for the detection of the invasive shrub Lonicera maackii in southwestern Ohio forests." Miami University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=miami1303831778.

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24

Rowekamp, Erin Catherine. "Seeing the Forest and the Stream: Assessing the Influence of Riparian Invasion by the Exotic Shrub Amur Honeysuckle (Lonicera maackii) on Terrestrial-to-Aquatic Linkages." University of Dayton / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1511907835465838.

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25

Lieurance, Deah M. "Leaf Phenology, Fecundity, and Biomass Allocation of the Invasive Shrub Lonicera maackii (Rupr.) Maxim in Contrasting Light Environments." Ohio University / OhioLINK, 2004. http://www.ohiolink.edu/etd/view.cgi?ohiou1108143238.

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26

Arzolla, Frederico Alexandre Roccia Dal Pozzo. "Florestas secundárias e a regeneração natural de clareiras antrópicas na Serra da Cantareira, SP." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/315640.

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Orientador: George John Shepherd<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-08-18T14:58:53Z (GMT). No. of bitstreams: 1 Arzolla_FredericoAlexandreRocciaDalPozzo_D.pdf: 2589315 bytes, checksum: 5f3a8f1162b2528b10143d38bedd987e (MD5) Previous issue date: 2011<br>Resumo: Florestas secundárias são constituídas por mosaicos de trechos em diferentes estágios sucessionais. As florestas estão sujeitas a ações antrópicas, diretas ou indiretas, que podem causar sua alteração, degradação ou supressão. Na Serra da Cantareira, houve
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27

Král, Kamil. "Assessment and mapping of forest and shrub geobiocoenoses by geoinformation methods." Doctoral thesis, 2005. http://www.nusl.cz/ntk/nusl-93026.

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28

Lange, Karen M. "Nutrient and tannin concentrations of shrub leaves in managed and unmanaged forests of the Oregon Coast Range : implications for herbivores /." 1998. http://hdl.handle.net/1957/10943.

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29

Pipkin, Ashley. "The Influence of Fire and Other Disturbance on Ericaceous Shrubs in Xeric Pine-Oak Forests of the Appalachian Mountains." Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9450.

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Fire suppression in the southern and central Appalachian Mountains has resulted in an alteration to vegetation structure and composition. For this research the dominant species, abundance, density and age structure of the ericaceous shrub layer is characterized on four sites across the southern and central Appalachian Mountains. Fire histories for each of the sites varied, and were determined in previous research using dendroecological techniques. Over 800 ericaceous shrubs were collected, species included Pieris floribunda (Pursh) Bentham & Hooker f., Rhododendron maximum L. and Kalmia lati
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30

Lindh, Briana C. "Understory herb and shrub responses to root trenching, pre-commercial thinning, and canopy closure in Douglas-fir forest of the western Cascades, Oregon." Thesis, 2003. http://hdl.handle.net/1957/30049.

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This thesis examines factors limiting understory herb presence and flowering in young second-growth Douglas-fir (Pseudotsuga menziesii) forests on the west side of the Cascade Mountains, Oregon, USA. I studied the belowground effects of canopy trees on understory herbs and shrubs in old-growth forests using trenched plots from which tree roots were excluded. Effects of tree density and stand age were tested by comparing the understory community composition of old-growth stands and pre-commercially thinned and unthinned young second-growth stands. I also examined the effect of conifer basal are
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31

Chen, Wan-Jyun, and 陳宛均. "Predation Risk of the Shrub and Ground Nesting Passerines in a Disturbed Lowland Forest of Central Taiwan." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/48793177590685937011.

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碩士<br>國立臺灣大學<br>生態學與演化生物學研究所<br>95<br>Predation is a primary cause of nest mortality in many nests of small passerines. And the difference of fauna causes different patterns of nest predation in temperate, tropical and subtropical region. Therefore bird would choose to select a safe nest-site to avoid predators. In order to determine the predation risks and to examine the effects of nest-site characteristics and nest microhabitat on nest success of small passerines with different nest types and with different nest predators, we monitored nesting success and identified predators of the shrub an
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32

Maydan, Jason Stephen. "Fine-scale population structure of masked shrews (Sorex cinereus) in an experimentally fragmented forest." Thesis, 1999. http://hdl.handle.net/2429/12352.

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Habitat fragmentation is perhaps the most important issue facing conservation efforts today. Forests in BC are becoming increasingly fragmented and knowledge about how species respond to different types of forest fragmentation is important for effective management of biological resources. This thesis attempts to use genetic techniques to address this issue. The population genetic structure of masked shrews, Sorex cinereus, was measured for a population in an experimentally fragmented forest near Sicamous Creek, BC. Two highly polymorphic microsatellite markers revealed a significant def
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33

Havlina, Douglas William. "Fire effects on vegetation diversity, structure, and successional dynamics in shrub-steppe and mixed conifer environments of the Hells Canyon, Idaho /." 1995. http://hdl.handle.net/1957/6738.

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34

(8067956), Caleb H. Redick. "Quantifying Impacts of Deer Browsing and Mitigation Efforts on Hardwood Forest Regeneration." Thesis, 2019.

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<p>Due to overpopulation and resource-poor habitat structure, deer threaten the<a> future of oak and other browse-sensitive species in hardwood forests. </a>Appropriate tools must be used to ensure desirable, diverse, and ecologically stable regeneration of future forests and the sustainability of native plant communities. We performed two experiments and a review to examine the effectiveness of available methods for managing browse of hardwood seedlings and to discover how these interact with each other and other silvicultural methods. First, we examined how fencing interacts with controlled-
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35

(11205324), Benjamin Joseph Rivera. "The Establishment, Control, and Post-Control Response of Amur Honeysuckle (Lonicera maackii)." Thesis, 2021.

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<p>Amur honeysuckle (<i>Lonicera maackii</i>) is a shrub endemic to East Asia which has become invasive and nearly ubiquitous to the forest ecosystems of eastern North America. Through its extended growing season, competitive ability, and potential allelopathy, Amur honeysuckle alters native herbaceous-layer plant communities and inhibits the regeneration of native tree species. As such, it is representative of a range of invasive shrub species imported from East Asia. My thesis contributes to questions fundamental to the understanding this and other invasive shrubs: 1) How do species become i
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