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Palynology and Vegetation History

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889456871 Year: Pages: 288 DOI: 10.3389/978-2-88945-687-1 Language: English
Publisher: Frontiers Media SA
Subject: Science (General) --- Ecology
Added to DOAB on : 2019-01-23 14:53:43
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This Research Topic commemorates the centenary of the first quantitative pollen diagram by Lennart von Post, the founder of paleoecological palynology. The main aim is to provide a thorough view of the use of palynology in aspects such as the reconstruction of Quaternary vegetation and environmental changes, the role of natural and anthropogenic drivers in the development of the Quaternary vegetation, the shaping of present-day ecological and biogeographical patterns, the potential application of this knowledge in biodiversity conservation and landscape restoration and the development of new methods of pollen analysis and data management. The Research Topic is subdivided into four main conceptual parts, namely (1) modern analog studies; (2) land cover estimates from pollen data; (3) vegetation dynamics reconstructions from Europe, North and South America, Africa and Oceania; and (4) large-scale reviews and meta-analyses. Hopefully, this Research Topic will serve to appraise the state of the art of modern palynology and highlight the usefulness of this discipline in long-term ecological research.

Alpine and Polar Treelines in a Changing Environment

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ISBN: 9783039286300 / 9783039286317 Year: Pages: 268 DOI: 10.3390/books978-3-03928-631-7 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology --- Botany
Added to DOAB on : 2020-06-09 16:38:57
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Concerns have been raised with respect to the state of high-altitude and high-latitude treelines, as they are anticipated to undergo considerable modifications due to global changes, and especially due to climate warming. As high-elevation treelines are temperature-limited vegetation boundaries, they are considered to be sensitive to climate warming. As a consequence, in this future, warmer environment, an upward migration of treelines is expected because low air and root-zone temperatures constrain their regeneration and growth. Despite the ubiquity of climate warming, treeline advancement is not a worldwide phenomenon: some treelines have been advancing rapidly, others have responded sluggishly or have remained stable. This variation in responses is attributed to the potential interaction of a continuum of site-related factors that may lead to the occurrence of locally conditioned temperature patterns. Competition amongst species and below-ground resources have been suggested as additional factors explaining the variability in the movement of treelines. This Special Issue (book) is dedicated to the discussion of treeline responses to changing environmental conditions in different areas around the globe.

Keywords

Changbai Mountain --- Erman’s birch --- microsite --- alpine treeline --- non-structural carbohydrates (NSCs) --- treeline --- climate change --- ecosystem manipulation --- space-for-time substitution --- long-term trends --- Central Austrian Alps --- 15N natural abundance --- nitrogen cycling --- treeline --- shrubline --- altitude --- light quantity --- light quality --- spectrometer --- shoot elongation --- tree seedlings --- forest climatology --- Switzerland --- temperature --- relative air humidity --- thermal continentality --- foehn winds --- expert elicitation --- knowledge engineering --- apical control --- multi-stemmed growth form --- Pinus cembra --- treeline --- climate change --- experimental rain exclusion --- plant water availability --- soil drought --- treeline --- sap flow --- Picea abies --- Larix decidua --- drought --- Mediterranean climate --- photoinhibition --- photosynthetic pigments --- tocopherol --- climate change --- climate zone --- environmental stress --- forest edge --- precipitation --- tree regeneration --- tree seedling recruitment --- upward advance --- alpine timberline --- conifer shrub --- pit aspiration --- refilling --- winter stress --- xylem embolism --- tree line --- sub-Antarctic --- westerly winds --- postglacial --- Holocene --- Southern Ocean --- climate change --- palynology --- cloud --- peat --- dendroclimatology --- elevational gradients --- drought --- western Montana --- Rocky Mountains --- treeline --- climate change --- fungal ecology --- diversity --- monitoring --- NDVI --- permafrost --- remote sensing data --- history of treeline research --- elevational treeline --- polar treeline --- treeline dynamics --- timberline --- higher altitude --- chlorophyll --- carotenoids --- climate change --- Pinus sibirica --- Abies sibirica --- elevational transect --- basal area increment --- climate warming --- conifers --- European Alps --- growth trend --- n/a

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