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Dissertations / Theses on the topic 'Forest ecology Bryophytes Lichens'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Affeld, Kathrin. "Spatial complexity and microclimatic responses of epiphyte communities and their invertebrate fauna in the canopy of northern rata (Metrosideros robusta A. Cunn.: Myrtaceae) on the West Coast of the South Island, New Zealand." Diss., Lincoln University, 2008. http://hdl.handle.net/10182/771.

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Rain forest canopies are renowned for their very high biodiversity and the critical role they play in key ecological processes and their influence on global climate. Despite that New Zealand supports one of the most diverse and extensive epiphyte flora of any temperate forest system, few studies have investigated epiphyte communities and their invertebrate fauna along with factors that influence their distribution and composition. This thesis represents the first comprehensive study of entire epiphyte communities and their resident invertebrate fauna in the canopy of New Zealand’s indigenous f

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2

Berglund, Håkan. "Biodiversity in fragmented boreal forests : assessing the past, the present and the future." Doctoral thesis, Umeå University, Ecology and Environmental Science, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-220.

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<p>The aims of this thesis are to (1) analyze the predictability (indicators) of plant and fungal species diversity in old-growth forests, and (2) assess the history and biodiversity of woodland key habitats (WKHs) and their potential to maintain species diversity in fragmented boreal forest landscapes. </p><p>Predictability was explored in Granlandet nature reserve, an unexploited landscape composed of discrete old-growth Picea forest patches of varying size isolated by wetland, reflecting conditions of insular biota at stochastic equilibrium. Data from 46 patches (0.2-12 ha) showed that most

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3

Rudolphi, Jörgen. "Bryophytes, lichens and dead wood in young managed boreal forests /." Uppsala : Dept. of Ecology, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/200788.pdf.

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4

Lewis, Jason Edward James. "Bio-monitoring for atmospheric nitrogen pollution using epiphytic lichens and bryophytes." Thesis, University of Nottingham, 2012. http://eprints.nottingham.ac.uk/13573/.

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Nitrogen enrichment in sensitive habitats has become a matter of concern in recent years, and has led to the need to develop a bio-monitoring scheme that could be used by non-specialists to undertake site evaluation across the UK. Epiphytes are ideal candidates for such a project due to their high sensitivity to atmospheric pollutants. Indicator species analysis identified a comprehensive UK-specific list of epiphytic indicators for NH3 pollution in the UK that for the first time also included microlichens. A shortlist of easily identifiable, widely distributed indicator species was produced f

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5

Perhans, Karin. "Cost-efficient conservation strategies for boreal forest biodiversity /." Uppsala, Sweden : Swedish University of Agricultural Sciences, 2008. http://diss-epsilon.slu.se/archive/00001772/.

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Thesis (doctoral)--Swedish University of Agricultural Sciences, 2008.<br>Thesis documentation sheet inserted. Includes appendix of reprints of five papers and manuscripts co-authored with others. Includes bibliographical references. Also partially issued electronically via World Wide Web in PDF format; online version lacks appendix of papers.

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6

Caldiz, Mayra S. "Diversity and growth of epiphytic macrolichens in northwestern Patagonian Nothofagus forests /." Alnarp : Swedish University of Agricultural Sciences, 2005. http://diss-epsilon.slu.se/archive/00000831/.

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Thesis (doctoral)--Swedish University of Agricultural Sciences, 2005.<br>Thesis documentation sheet inserted. Appendix reproduces four papers and manuscripts, three co-authored with others. Includes bibliographical references. Also partially available electronically via World Wide Web in PDF format; online version lacks appendix.

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7

Weibull, Henrik. "Bryophytes on boulders : diversity, habitat preferences and conservation aspects /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2000. http://epsilon.slu.se/avh/2000/99-3371261-6.pdf.

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8

Maliniemi, T. (Tuija). "Decadal time-scale vegetation changes at high latitudes:responses to climatic and non-climatic drivers." Doctoral thesis, Oulun yliopisto, 2018. http://urn.fi/urn:isbn:9789526220123.

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Abstract Boreal and arctic plant communities are responding to anthropogenic climate change that has been exceptionally rapid during the recent decades. General responses include increased productivity, range expansions and biodiversity changes, all of which affect ecosystem functions. Vegetation dynamics are however controlled by multiple drivers, and the outcomes under the changing climate are not yet fully clear. As high latitude areas often lack long-term monitoring of vegetation, alternative methods are required to observe and understand vegetation changes and dynamics. Recently, resurvey

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9

Zinko, Ursula. "Plants go with the flow : predicting spatial distribution of plant species in the boreal forest." Doctoral thesis, Umeå : Ekologi och geovetenskap, Univ, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-315.

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10

Prather, Hannah Marie. "Examination of Human Impacts on the Biodiversity and Ecology of Lichen and Moss Communities." PDXScholar, 2017. https://pdxscholar.library.pdx.edu/open_access_etds/3615.

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Globally, more than half of the world's population is living in urban areas and it is well accepted that human activities (e.g. climate warming, pollution, landscape homogenization) pose a multitude of threats to ecosystems. Largely, human-related impacts on biodiversity will hold consequences for larger ecological processes and research looking into human impacts on sensitive epiphytic lichen and moss communities is an emerging area of research. While seemingly small, lichen and moss communities exist on nearly every terrestrial ecosystem on Earth and contribute to whole-system processes (e.g

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11

Dixon, Katherine Marguerite, and n/a. "Biodiversity along a gradient of modification : plant invertebrates and reptile diversity in mid-altitude tall tussock (Chionochloa rigida) grasslands, eastern Central Otago, New Zealand." University of Otago. Department of Botany, 2005. http://adt.otago.ac.nz./public/adt-NZDU20070130.154858.

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This thesis set out to examine the soils, plants, lichens, invertebrates and common skinks along a gradient of habitat modification. This gradient was represented by ten study sites, of varying management histories, in a mid altitude tall tussock (Chionochloa spp.) grassland in eastern Central Otago. One extreme of the gradient was represented by intact tall tussock plants with a high density of inter tussock vegetation. The other extreme was represented by intensively managed exotic pasture. Native plants, invertebrates and reptiles were present along the entire gradient of modification and

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12

Lundgren, Lodetti Mathilda. "Log-diversity and abundance of dead wood dependent bracket fungi and bryophytes, a comparison between spruce woodland key habitats and adjacent production forests in Östergötland, Sweden." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-159682.

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Dead wood in forests are essential habitat for a wide range of fungal, insects, lichens and bryophyte species. The main threat to dead wood dependent species is lack of substrate, which aggravates their ability to reach and colonize a new substrate. Inventories of woodland key habitats (WKHs) is a method to map forests with high biological value in Sweden, and these areas may benefit dead wood dependent species. The aim of this study was to compare spruce dominated WKHs with adjacent production spruce forests (APFs), regarding (1) log diversity, (2) log characteristics and (3) abundance of sel

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13

Johansson, Otilia. "Epiphytic lichen responses to nitrogen deposition." Doctoral thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-43751.

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Nitrogen (N) deposition has increased globally over the last 150 years and further increase is predicted for the future. Nitrogen is an important nutrient for lichens, involved in many processes in both photobiont and mycobiont. However, N can be a stressor, causing many lichens and lichen communities to disappear with increased deposition. The objective of this thesis was to investigate the response of epiphytic lichens to increased N load. This was done by simulating an increased N deposition to lichens in a boreal forest with low background N, including both short term studies with transpl

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14

Dittrich, Sebastian. "Influence of forest age dynamics on ground vegetation and epiphytic diversity in montane spruce forests." Doctoral thesis, 2013. http://hdl.handle.net/11858/00-1735-0000-0022-5E01-D.

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Die Wälder Mitteleuropas wurden seit dem Neolithikum stark durch den Menschen beinflusst. Die meisten Wälder weisen keine naturnahe Struktur mehr auf, es fehlen große, alte Bäume ebenso wie stehendes und liegendes Totholz. Die Fortwirtschaft lässt die Herausbildung später Entwicklungsphasen mit alternden und absterbenden, zusammenbrechenden Baumindividuen nicht zu. Zahlreiche Studien haben jedoch die Bedeutung alter und zerfallender Waldbestände für spezialisierte Waldorganismen gezeigt. Die vorliegende Studie beabsichtigte, die Bedeutung der späten Sukzessions-Stadien für die Pflanzendiversit

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15

Nöske, Nicole. "Effekte anthropogener Störung auf die Diversität kryptogamischer Epiphyten (Flechten, Moose) in einem Bergregenwald in Südecuador." Doctoral thesis, 2005. http://hdl.handle.net/11858/00-1735-0000-0006-B6EF-B.

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16

Caners, Richard T. "Conservation and ecology of bryophytes in partially harvested boreal mixed-wood forests of west-central Canada." Phd thesis, 2010. http://hdl.handle.net/10048/1309.

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This thesis examined the efficacy of residual forest structure for the preservation and recovery of bryophytes five to six years after partial canopy harvest in boreal mixed-wood forests of northwestern Alberta, Canada. Bryophytes were sampled in two forest types that differed in pre-harvest abundance of broadleaf (primarily Populus tremuloides Michx. and P. balsamifera L.) and coniferous (primarily Picea glauca (Moench) Voss) canopy trees. In Chapter 2, epiphytic bryophytes growing on aspen (P. tremuloides) were characterized by species viability and nearest-neighbour relationships. Epiphyte

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17

Peterson, Eric B. "Analysis and prediction of patterns in lichen communities over the western Oregon landscape." Thesis, 2000. http://hdl.handle.net/1957/32593.

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The diverse lichen flora of the Pacific Northwest is being impacted by population growth and by forest management practices. Accumulating information about our lichen flora will improve our conservation strategies. This dissertation first collects information to improve our understanding of how lichen communities vary among forests of differing structure, and across the western Oregon landscape. It then proposes a method to predict species occurrence in unsampled sites by utilizing the information on forest characters and environmental gradients at sampled sites. Macrolichen communities sample

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18

Traut, Bibit Halliday. "Effects of variation in ecosystem carryover on biodiversity and community structure of forest floor bryophytes and understory vascular plants : a retrospective approach." Thesis, 1994. http://hdl.handle.net/1957/36396.

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19

Martin, Erin P. "Lichen response to the environment and forest structure in the western Cascades of Oregon." Thesis, 2005. http://hdl.handle.net/1957/21005.

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Lichens are an important part of the biota in western Oregon forests, where they perform valuable ecological roles and contribute significantly to biodiversity. Lichens in western Oregon are threatened by a number of factors including air pollution and land use practices. If we wish to maintain the persistence of lichens in future landscapes it is critical that we understand the responses of lichen communities and individual lichen species to the environment and forest structure. This dissertation explores factors that are related to differences in lichen community composition and the distribu

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20

Kaufmann, Stefan. "Vascular plant and cryptogam diversity in Fagus sylvatica primeval forests and comparison to production stands in the western Carpathian Mountains, Slovakia." Thesis, 2018. http://hdl.handle.net/21.11130/00-1735-0000-0003-C123-B.

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21

Holz, Ingo. "Diversity and Ecology of Bryophytes and Macrolichens in Primary and Secondary Montane Quercus Forests, Cordillera de Talamanca, Costa Rica." Doctoral thesis, 2003. http://hdl.handle.net/11858/00-1735-0000-0006-B682-0.

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Folgende Themenkomplexe wurden behandelt: Biogeographie, Pflanzendiversität, Verbreitungsmuster von Lebensformen und Arten in Mikrohabitaten sowie entlang ökologischer Gradienten, Epiphyt-Porophyt-Beziehungen, Vergesellschaftung, Sekundärsukzession und die Auswahl von Indikatorarten. Zum ersten Mal wird bei einer derartigen Untersuchung die sekundäre Sukzession von Kryptogamengesellschaften in tropischen Bergregenwäldern voll berücksichtigt. Die Untersuchung wurde im Einzugsgebiet des Rí

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22

Jacome, Reyes Jorge Hernan. "Factors controlling the lower elevational limits in tropical montane plants in the Andes and their implications under the current climatic change." Doctoral thesis, 2005. http://hdl.handle.net/11858/00-1735-0000-0006-B6D5-3.

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