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Rozprawy doktorskie na temat „Heathlands”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 31 lipca 2024

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1

Britton, Andrea Jane. "Modelling invasions on heathlands." Thesis, University of Liverpool, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284563.

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Nolan, Abigail. "Modelling change in the lowland heathlands of Dorset." Thesis, University of Southampton, 1999. https://eprints.soton.ac.uk/388232/.

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Uren, Sally Clare. "The effects of wet and dry deposited ammonia on Calluna vulgaris." Thesis, Imperial College London, 1992. http://hdl.handle.net/10044/1/8895.

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4

Tripp, Edward James. "Nitrogen deposition and the sustainability of lowland heathlands in Britain." Thesis, University of Nottingham, 2013. http://eprints.nottingham.ac.uk/13027/.

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Despite widespread conservation efforts, global heathland area has substantially decreased in recent decades. Heathland habitats require low nitrogen availability in order to persist. Over the past 150 years, however, nitrogen deposition has increased markedly. Early observational studies and research using artificial N applications have identified N deposition as the primary driver of heathland succession into grassland or woodland, and N enrichment is considered a threat to heathland sustainability. This study investigated soil fertility and vegetation composition at 25 lowland heathland sit

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5

Martin, Kirsten. "Disturbance-Based Management and Plant Species Change in Massachusetts Sandplain Heathlands over the Past Two Decades." Master's thesis, University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5813.

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Massachusetts sandplain heathlands are habitats of conservation concern, harboring many rare plant species and providing habitat for animals that depend on openlands. These heathlands are threatened by human development, shrub encroachment in the absence of disturbance, and potentially increasing soil nutrient levels. Sandplain heathlands are managed with prescribed fire, in order to maintain their open structure and maintain species diversity. In order to assess how past management was correlated with species change, I used a data set that spanned twenty years from three different heathlands

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6

Collier, Fay Alexandra. "The mycorrhizal fungi involved in the tree invasion of lowland heathlands." Thesis, Imperial College London, 2009. http://hdl.handle.net/10044/1/5294.

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In England, the loss of lowland heathland, a habitat of high conservation importance, is primarily due to the invasion of birch and pine. This secondary succession has been researched in depth from a plant perspective but little is known about the role of mycorrhizal fungi, even though both trees and heather are mycorrhizal. In fact, tree encroachment onto lowland heathland can be regarded as the replacement of a resident ericoid mycorrhizal community by an invading ectomycorrhizal community. I determined the identity and distribution of the ectomycorrhizal fungi associated with birch and pine

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7

Daniel, Rosalie, and mikewood@deakin edu au. "Aspects of the interaction between Xanthorrhoea australis and Phytophthora cinnamomi in south-western Victoria, Australia." Deakin University. School of Biological and Chemical Sciences, 2002. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20051201.144848.

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Diseases in natural ecosystems are often assumed to be less severe than those observed in domestic cropping systems due to the extensive biodiversity exhibited in wild vegetation communities. In Australia, it is this natural biodiversity that is now under threat from Phytophthora cinnamomi. The soilborne Oomycete causes severe decline of native vegetation communities in south-western Victoria, Australia, disrupting the ecological balance of native forest and heathland communities. While the effect of disease caused by P. cinnamomi on native vegetation communities in Victoria has been extensive

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8

Davis, Charles D. "Impact of Fuel Management Strategies on Potential Fire Behavior in the Heathlands and Moorlands of North-West Europe." The Ohio State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu161893613230021.

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9

Schirmel, Jens [Verfasser]. "Arthropods in a changing environment : a multi-level and -species approach to diversity and ecology in coastal heathlands / Jens Schirmel." Greifswald : Universitätsbibliothek Greifswald, 2011. http://d-nb.info/1013465237/34.

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10

Graham, Tristian. "The impact of Phytophthora dieback and the aerial application of phosphite on terrestrial invertebrate communities of south coast heathlands, Western Australia." Thesis, Graham, Tristian (2003) The impact of Phytophthora dieback and the aerial application of phosphite on terrestrial invertebrate communities of south coast heathlands, Western Australia. Honours thesis, Murdoch University, 2003. https://researchrepository.murdoch.edu.au/id/eprint/32628/.

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Terrestrial invertebrates were surveyed from south coast heathland environments, Gull Rock and Waychinicup National Park. These study sites chosen from within these two regions consist of both healthy and Phytophthora cinnamomi infected vegetation. Phosphite was being aerially applied to parts of these sites as a preventative treatment for the further spread of Phytophthora dieback disease into healthy areas. The experiment aimed to sample terrestrial invertebrate communities using pitfall traps and a foliage beating technique in Phytophthora dieback affected areas and healthy areas and also b

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11

Laidlaw, William Scott, and mikewood@deakin edu au. "The Effects of Phytophthora Cinnamomi on heathland flora and fauna of the Eastern Otway Ranges." Deakin University. School of Biological and Chemical Sciences, 1997. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20051111.121612.

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The plant pathogen, Phytophthora dnnamomi, is a cause of dieback disease observed in sclerophyll vegetation in Australia, The effects of P. dnnamomi on flora and fauna were studied at two locations in heathland vegetation near the coastal town of Anglesea, Victoria. The pathogen was isolated from soils beneath diseased heathland plants. The extent of diseased vegetation was assessed by the presence and absence of highly sensitive indicator species, Xanthorrhoea australis and hopogon ceratophyllus. The characteristics of heathland vegetation exhibiting dieback disease associated with the presen

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12

Wills, Timothy Jarrod 1974. "Succession in sand heathland at Loch Sport, Victoria : changes in vegetation, soil seed banks and species traits." Monash University, Dept. of Biological Sciences, 2002. http://arrow.monash.edu.au/hdl/1959.1/7742.

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13

Plucinski, Matthew Paul Mathematics &amp Statistics Australian Defence Force Academy UNSW. "The investigation of factors governing ignition and development of fires in heathland vegetation." Awarded by:University of New South Wales - Australian Defence Force Academy. School of Mathematics and Statistics, 2003. http://handle.unsw.edu.au/1959.4/38702.

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Heathlands typically experience regimes consisting of frequent and intense fires. These fire regimes play important roles in the lifecycles and population dynamics of all species in these communities. Prescribed fire is commonly applied to heathlands to minimise the risk of wildfires as well as to promote biodiversity. Ignitions in heathlands tend to either be unsustainable, or quickly develop into rapidly spreading intense fires. This presents a major problem for the application of prescribed fire and is the primary focus of this thesis. Heathland ignition has been investigated in three

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14

Griffiths, Megan Elizabeth. "Salt spray effects on rare New England coastal sandplain heathland plant communities /." Thesis, Connect to Dissertations & Theses @ Tufts University, 2003.

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Thesis (Ph.D.)--Tufts University, 2003.<br>Adviser: Colin M. Orians. Submitted to the Dept. of Biology. Includes bibliographical references (leaves 181-200). Access restricted to members of the Tufts University community. Also available via the World Wide Web;

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15

Meeteren, Maartje Johanna Maria van. "Heathland ecosystem functioning under climate change." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2005. http://dare.uva.nl/document/78861.

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16

Crabtree, Lora. "Nitrogen source preferences in heathland plants." Thesis, University of Aberdeen, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.419654.

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Plant growth is limited by N availability in high latitude and altitude ecosystems where soil N is held in organic matter due to slow rates of soil processes. Adaptations to stress tolerance in these ecosystems include mechanisms for increased N capture, including from organic sources. N uptake up heathland plants was examined, specifically with respect to; source effects, species differences, short-term uptake and ecological relevance. N capture was measured with <sup>15</sup>N-labelled sources, including ammonium, glycine, leucine, fungal cell wall and powdered worm, over treatment durati

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17

Angold, Penelope Gaynor. "The role of buffer zones in the conservation of semi-natural habitats." Thesis, University of Southampton, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314943.

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18

Williams, Christina Mary. "Heath creation through the establishment of Calluna vulgaris (L.) Hull on ex-arable land in north-east Scotland." Thesis, University of Aberdeen, 1996. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU089791.

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The declining area of heathland in north-west Europe is causing widespread concern amongst conservationists. The aim of the experiments described in this thesis was to investigate methods of heath creation by establishing the dwarf shrub, <I>Calluna vulgaris</I> (L.) Hull, on the ex-arable land. Arable land, surplus to requirement and available through set-aside schemes, could be used to expand or join together small pockets of remnant heath. Field experiments were designed to test various methods of introducing <I>Calluna</I>, but, in all cases, it failed to persist and spread after introduct

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19

Allchin, Elizabeth Ann. "Vegetation dynamics following management burning of lowland heathland." Thesis, University of Liverpool, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284333.

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Management of the southern lowland heaths is usually for conservation, and aims to create structural diversity, prevent succession to scrub and maintain the low nutrient status of the system. The main aim of this study was to investigate the effects of burning, fire temperature and intensity on seed banks, nutrients, vegetative regeneration and seedling demography. In the first experiment (1994), vegetation fuel loads were manipulated in stands representing two different growth phases of vegetation (mature and degenerate) at two sites (Arne in Dorset and Aylesbeare in Devon) to test the hypoth

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20

Pardiwala, Rashneh N. "Effects of atmospheric nitrogen deposition on heathland ecosystems." Thesis, University of Edinburgh, 2001. http://hdl.handle.net/1842/12762.

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This study examined the degree to which enhanced nitrogen inputs in a <i>Calluna</i>-dominated ecosystem can alter plant physiological responses, affect the response of soil respiration to environmental parameters by disturbing acclimatised soil microbial populations, influence the relationship between soil carbon fluxes and soil microbial populations, and change soil mineral nitrogen availability to the plants. A pilot study investigated the response of nitrogen deposition on <i>Calluna vulgaris</i> plants maintained in open-top chambers. Heathland monoliths were exposed to acid mist treatmen

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21

Cawley, Leigh Eric. "Pollutant nitrogen and drought tolerance in heathland plants." Thesis, Manchester Metropolitan University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341054.

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It has been suggested that pollutant nitrogen inputs adversely influence the response of heathland plants to certain climatic and biotic stresses. One specific hypothesis being that elevated nitrogen deposition may reduce drought tolerance in heathland vegetation. However, there is little evidence from field studies that this is the case. The aims of this research project have been firstly to establish the effects of increased nitrogen inputs upon plant water relations in certain dwarf heathland shrubs under winter and summer drought conditions. Secondly, to contribute to the understanding of

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22

Scandrett, Eurig. "Gap formation and cyclical change in heathland vegetation." Thesis, University of Aberdeen, 1987. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU010080.

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The phasic, cyclical model of Calluna-dominated vegetation dynamics, proposed by A.S. Watt, is evaluated by investigation of the gap in the degenerate plant. Succession in the gap is analysed by Markov models and found to be non-Markovian, with a number of processes occurring simultaneously. Vegetation changes are better interpreted in terms of certain ecological attributes of the species concerned. The inter-relationships between three important moss species are investigated further. Regeneration of Calluna is very variable. Seedling establishment requires a safe site and sufficient moisture,

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23

Preece, Catherine. "Impacts of icing events on sub-arctic heathland vegetation." Thesis, University of Sheffield, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.574535.

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The Arctic is experiencing large climatic changes, particularly during winter, including warming, rain-on-snow events and increased frequency of freeze-thaw cycles. These changes are predicted to lead to an increase in the frequency of icing events. During these events vegetation can become encased in ice which may damage plants through freezing, hypoxia or high C02 (created within impermeable ice layers) and mechanical injury. To date however, ice encasement impacts on arctic vegetation remain largely unknown. In the study area in sub-arctic Sweden, snow pack surveys verified the occurrence o

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24

Phoenix, Gareth Kevin. "Effects of ultraviolet radiation on Sub-Arctic heathland vegetation." Thesis, University of Sheffield, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322936.

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25

Pywell, Richard Francis. "The restoration of heathland on farmland in southern Britain." Thesis, University of Liverpool, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.385161.

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26

Hughes, Marion Geraldine Brierley. "Experimental management of heathland in the Lizard District, Cornwall." Thesis, University of Bristol, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292568.

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27

Staley, Jeremy Ross. "Aspects of the population dynamics of Lochmaea suturalis Thompson (Coleoptera: Chrysomelidae; sub-family: Galerucinae), the heather beetle : a combined laboratory and modelling approach." Thesis, University of Newcastle Upon Tyne, 2000. http://hdl.handle.net/10443/956.

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This thesis describes a series of laboratory and field experiments that quantify the population dynamics of the heather beetle (Lochmaea suturalis Thomson), in relation to temperature and its host plant heather (Calluna vulgaris (L. ) Hull). The sex ratio, fecundity, egg laying threshold temperature, emergence threshold temperature, life stage development periods, and life stage mortalities were investigated. It was shown that the life stages were significantly dependent on temperature, whilst it was shown that there was no significant relationship between larval growth and Calluna vulgaris pl

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28

HyvaÌˆrinen, Marko. "Modified element distributions in Cladonia portentosa as indices of acid and nitrogen deposition in the British Isles." Thesis, University of Nottingham, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363928.

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29

Greshon, Stephanie. "A study of the plant community structure of a valley mire complex at Thursley Common National Nature Reserve, Surrey." Thesis, University of Westminster, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.237281.

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30

Flagmeier, Maren. "Scottish liverwort heath : response to a changing environment and prospects for the future." Thesis, University of Aberdeen, 2013. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=201893.

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Upland plant communities are vulnerable to environmental change, especially if the component species have limited dispersal abilities and consist of fragmented populations. Oceanic-montane liverwort-rich heath is a rare upland vegetation type found in the oceanic areas of the British Isles and Norway. This thesis contributes both fundamental knowledge about the liverworts’ biology and an understanding of how this can be applied in conservation management, taking into account the compositional changes that have already occurred within liverwort heath. These issues were explored by i.) a re-surv

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31

Genney, David R. "Below-ground ecology of Calluna vulgaris and Nardus stricta." Thesis, University of Aberdeen, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325227.

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32

Papanikolaou, Niki D. "Response of alpine heathland soils to environmental change and land management." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2008. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=25204.

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33

Barker, Christopher Graham. "The impact of management on heathland response to increased nitrogen deposition." Thesis, Imperial College London, 2001. http://hdl.handle.net/10044/1/11439.

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34

Ray, Nicholas David. "Long term impacts of nitrogen deposition and management on heathland soils and vegetation." Thesis, Manchester Metropolitan University, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.440236.

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35

Owen, Kathleen Mary. "The creation of heathland and acid grassland on former arable land at Minsmere." Thesis, University of Liverpool, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263899.

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36

Gunnlaugsdóttir, Elín. "Composition and dynamical status of heathland communities in Iceland in relation to recovery measures." Doctoral thesis, Uppsala universitet, Matematisk-naturvetenskapliga fakulteten, 1985. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-184363.

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37

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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38

Clarke, Christopher Trolle. "Improving the success of heathland reconstruction schemes with particular emphasis on participation and location." Thesis, University of East Anglia, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320081.

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Jones, Alan Glyn. "Heathland responses to nitrogen deposition : exploring the role of habitat management and soil biochemistry." Thesis, Imperial College London, 2010. http://hdl.handle.net/10044/1/5696.

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Elevated levels of nitrogen deposition are altering the normal functioning of seminatural ecosystems around the world. Of concern in Europe are the nitrogen driven changes occurring to (semi)-natural ecosystems such as obrotrophic bogs, upland moors and lowland heathland. Lowland heathland is a particularly vulnerable oligotrophic habitat, with a narrow climatic optimum that restricts the remaining fragmented patches to a small corner of highly populated northwestern Europe. Increased nitrogen availability reduces the competitiveness of characteristic heathland plants, such as Calluna vulgaris

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40

White, Helen Marie. "Biotic and Abiotic Factors of Picea rubens (Red Spruce) Seedling Regeneration in Disturbed Heathland Barrens of the Central Appalachians." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/101088.

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During the late 19th and early 20th centuries, extensive logging reduced the forests of red spruce (Picea rubens) by nearly 99% through portions of West Virginia. In the wake of this disturbance, red spruce has begun regenerating on the ridge and mountaintop areas of Canaan Valley, West Virginia, where heath and grassland communities have both persisted in natural barrens and expanded into formerly forested areas. To understand abiotic and biotic conditions guiding the advance of the red spruce stand, I conducted a broad-scale assessment of thirty-one demographics plots spread across two sites

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41

Lawson, Clare Suzanne. "The establishment of grassland and heathland vegetation on former arable land in North East Scotland." Thesis, Imperial College London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265763.

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Gregory, Jon. "Marginal Environments and the Idea of Improvement : Transforming Heathland and Moorland Landscapes c.1650 - 1850." Thesis, University of East Anglia, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.514256.

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43

Sharps, Katrina. "The conservation ecology of the European nightjar (Caprimulgus europaeus) in a complex heathland-plantation landscape." Thesis, University of East Anglia, 2013. https://ueaeprints.uea.ac.uk/47930/.

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The conservation ecology of the European nightjar (Caprimulgus europaeus) was investigated in a complex heathland-plantation landscape in eastern England. Using radio telemetry, 31 nightjars were tracked in 2009 and 2010. The breeding behaviour of males was found to have potential implications for nightjar survey methods. While surveyors should be aware of the possibility of song territory overlap between male birds, results suggest that the occurrence of roaming unpaired males would not lead to an over-estimate in population. Home range 95% kernels for females, paired and unpaired males were

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44

Friedrich, Uta [Verfasser], and Werner [Akademischer Betreuer] Härdtle. "Impact of nitrogen deposition on the functioning of heathland ecosystems / Uta Friedrich. Betreuer: Werner Härdtle." Lüneburg : Universitätsbibliothek der Leuphana Universität Lüneburg, 2012. http://d-nb.info/1034194895/34.

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45

Al, Fassi Fahad Abdulrahman. "The microbial ecology of heathland soil with special reference to factors affecting microbial biomass and activity." Thesis, University of Sheffield, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318137.

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46

Bishop, Craig Douglas. "The Nature and Stability of Frost Flat Heathland/ Forest Ecotones in the Central North Island, New Zealand." Thesis, University of Auckland, 2005. http://hdl.handle.net/2292/797.

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This thesis examines the nature and stability of the ecotone between frost flat heathland (FFH) vegetation, and surrounding forest, in the Central North Island of New Zealand. FFH vegetation is found throughout the Central North Island, in locations where surrounding topography causes cold air to pool on clear, still nights. This increases frost severity and -due to the low frost tolerance of most woody New Zealand plant species - frosts are severe enough to prevent the establishment of most plant species which are common in the surrounding forest vegetation. The majority of work was carried o

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47

Schmidt, Johannes Matthias [Verfasser], and S. [Akademischer Betreuer] Schmidtlein. "Remote sensing in support of conservation and management of heathland vegetation / Johannes Matthias Schmidt ; Betreuer: S. Schmidtlein." Karlsruhe : KIT-Bibliothek, 2017. http://d-nb.info/1144367670/34.

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48

Warnock, James. "Heathland productivity and the determination of stocking densities in the Eastern Mournes Area of Special Scientific Interest." Thesis, Queen's University Belfast, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325968.

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Henning, Katrin [Verfasser], and Goddert von [Akademischer Betreuer] Oheimb. "Restoration and management of abandoned, dry continental heathland and sandy grassland communities / Katrin Henning ; Betreuer: Goddert von Oheimb." Lüneburg : Universitätsbibliothek der Leuphana Universität Lüneburg, 2019. http://d-nb.info/1177360837/34.

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50

Henning, Katrin Verfasser], and Goddert von [Akademischer Betreuer] [Oheimb. "Restoration and management of abandoned, dry continental heathland and sandy grassland communities / Katrin Henning ; Betreuer: Goddert von Oheimb." Lüneburg : Universitätsbibliothek der Leuphana Universität Lüneburg, 2019. http://nbn-resolving.de/urn:nbn:de:gbv:luen4-opus-145274.

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