Blättern Fakultät für Biologie und Psychologie (inkl. GAUSS) nach "Leuschner, Christoph Prof. Dr." Betreuer
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Auswirkungen von Trockenheit und Entlaubung auf den Wasserhaushalt von Stiel- und Traubeneiche
(2002-12-09)As indicated indirectly by tree ring analysis and climate records, defoliation in at least two consecutive years together with a dry summer is considered to be the most important combination ... -
Die Bedeutung der Epiphyten im ökosystemaren Wasser- und Nährstoffumsatz verschiedener Altersstadien eines Bergregenwaldes in Costa Rica
(2002-12-09)In a comparative study, conducted in the Costa Rican Cordillera Talamanca, a chronosequence of three different successional stages of an upper montane rain forest was investigated. This ... -
Belowground plasticity of European beech – Studies on the variability of beech fine root system size, structure, morphology, and anatomy, and on their impact on soil organic matter in the top- and subsoil of six beech forests with different bedrock types in Northern Germany
(2019-02-01)Trees’ rooting systems have a fundamental role in the acquisition of water and nutrients from the soil and they are thought to be inherently plastic with regards to their size, structure, morphology and anatomy in order ... -
Blattwasserzustand und Wasserumsatz von vier Buchenwäldern entlang eines Niederschlagsgradienten in Mitteldeutschland
(2003-12-15)1. The aim of the study was to analyze the plasticity of common beech (Fagus sylvatica L.) in water use and the regulation of water balance in adaptation to forest sites with widely differing precipitation regimes. The ... -
Carbon release from woody parts of trees along an elevation gradient in a tropical montane moist forest of Southern Ecuador
(2008-08-11)Tropical montane forests (TMF), which account for 21.2% of tropical forests worldwide, are among the least studied ecosystems with respect to their C balance. The present study aimed to ... -
Comparing northern German Scots pine plantations with natural beech forests: Soil carbon pools and growth dynamics
(2023-03-10)Forestry in the North German Lowlands has been historically characterized by pine in particular. Apart from pine, beech is one of the most important deciduous tree species in this region and would naturally also be the ... -
Conservation, biodiversity and governance of semi-natural grasslands in Southern Transylvania (Romania)
(2014-09-03)Semi-natural grasslands are species-rich habitats of major importance for many taxonomic groups and as a provider of ecosystem services, yet are becoming increasingly rare and thus a conservation priority in Europe. The ... -
Diversity and tree neighborhood effects on the growth dynamics of European beech and the stand seed bank in temperate broad-leaved forests of variable tree diversity
(2010-06-11)Among the recent studies investigating species diversity s effect on ecosystem functioning, only few examine long-term changes. My study addresses this question based on seed bank analysis ... -
Diversity, composition, and biogeography of trees in tropical mountain forests of Sulawesi, Indonesia
(2019-10-28)Human activities are increasingly threatening the integrity of Earth’s ecosystems. For successful conservation measures, one necessary prerequisite is an adequate level of understanding about the ecosystems and their ... -
Effects of air humidity on development, physiology and distribution of temperate woodland herbs and tree saplings
(2008-04-14)How growth and morphology of wild plants are controlled by the relative air humidity is not sufficiently understood. The present study investigated long-term effects of contrasting air humidity levels on growth, physiology ... -
Effects of moderate Nitrogen and Phosphorus addition on the species composition and dynamics of the three seedlings community in tropical montane forests in southern Ecuador
(2016-10-28)Anthropogenic activities have produced changes in natural ecosystems worldwide. In tropical regions in South America, industrialization of cities and forest clearance via burning are the main activities releasing pollutants ... -
Effects of tree species composition on fine root biomass and dynamics in the rhizosphere of deciduous tree stands in the Hainich National Park (Thuringia)
(2013-11-20)During the past two decades, much research has focused on understanding the role of biodiversity for ecosystem functioning and the provision of ecosystem goods and services for humanity. While several experiments with ... -
Effects of tree species diversity and soil drought on productivity, water consumption and hydraulic functioning of five temperate broad-leaved tree species
(2016-07-01)Biodiversity is by now widely known to strengthen functioning and services, like primary production and element cycling, for a broad range of ecosystem types. However, it is less clear yet if and how this relationship also ... -
Elevation Effects on Key Processes of Carbon Cycling in South Ecuadorian Mountain Forests
(2008-12-02)This study on forests in South Ecuador aims at filling some of the great gaps of knowledge on the carbon cycling in mountain rainforests at elevations between 1000 and 3000 m. Special ... -
Experimentelle Untersuchung der Wasseraufnahme und der hydraulischen Eigenschaften des Wurzelsystems von sechs heimischen Baumarten
(2004-08-25)The aim of this study was to investigate the water uptake of the tree species sycamore (Acer pseudoplatanus), ash (Fraxinus excelsior), small-leaved lime (Tilia cordata), hornbeam (Carpinus ... -
Fine root dynamics and resource uptake in a South Ecuadorian mountain rainforest as dependent on elevation
(2008-09-11)Tropical mountain rainforests extend over large elevational gradients with diverse climatic conditions. They are characterised by a decrease of above ground biomass, and a pronounced increase ... -
Fine root dynamics in broad-leaved deciduous forest stands differing in tree species diversity
(2008-10-07)Biodiversity effects on ecosystem functioning in forests have attracted increasing attention only recently. The vast majority of studies in forests focussed on above-ground responses to ... -
Genetische Vielfalt und Vernetzung verschiedener Teilpopulationen von Corylus avellana L. und Prunus spinosa L. an Wald- und Wegrändern des Sollings
(2003-12-18)During the last decades the increasing destruction of habitats by human beings has grown to a global problem. This can lead to displacements of populations or even fast eliminations of ... -
Genotypic variation in drought response of silver birch (Betula pendula Roth)
(2002-01-16)Young trees of four clones of Betula pendula from origins with different amounts of precipitation were subjected to prolonged drought periods in two subsequent summers. The aims of ... -
Habitat ecology and long-term development of the macrophyte vegetation of north-west German streams and rivers since the 1950s
(2013-11-08)This PhD thesis deals with the habitat characterization and the long-term development over 60 years of the macrophyte vegetation of north-west German running waters in order to contribute to the knowledge about the ecology ...