Dokumente Fakultät für Forstwissenschaften und Waldökologie (inkl. GAUSS) nach Gutachter "Ammer, Christian Prof. Dr."
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Analyse von Schälschadensinventuren in Harz und Solling
(2015-06-18)The present work represents the continuation of a project that examined the causal relationships between environmental factors and the occurrence of bark stripping on spruce by red deer in the Harz and Solling mountains ... -
Assembly of root-associated fungi in different soil layers and nitrogen uptake by ectomycorrhizae in temperate forests
(2021-07-30)Fungi are a remarkably highly diverse group of organisms on Earth, playing a pivotal role in ecosystem functioning. Belowground, they act as decomposers, pathogens or symbionts. Members of these functional categories are ... -
Competition mechanisms of native and exotic tree species
(2014-01-09)The amount of exotic plant species introduced to new regions by humans has considerably increased in the last two centuries. Worldwide, the invasion of exotic species represents an important threat to native biodiversity ... -
Diversity and abundance of medicinal plants among different forest-use types of the Pakistani Himalaya
(2012-02-06)Medicinal plants collected in the Himalayan forests are receiving increasing attention at the international level for a number of reasons and they play an important role in securing rural ... -
Drone-based assessments of crowns, canopy cover and land use types in and around an oil palm agroforestry experiment
(2019-04-11)Oil palm cultivation has vastly expanded in the last decades and led to high economic returns, but has also induced environmental problems including reduced biological diversity and impaired ecosystem services. One potential ... -
Der Einfluss von Stickstoff und Trockenheit auf die Vitalität einer Hainbuchen- und Kiefernverjüngung
(2019-05-29)Due to its physical properties Biochar has the potential of stabilizing a forest rejuvenation during periods of drought. To verify this, a field trial was set up in 2014 in the Hessian Ried. The observed mortality of the ... -
From Points to Forests - The potential of 3D point clouds to evaluate the structural complexity of differently managed beech forests
(2024-03-04)Climate change is leading to global shifts that can create a particular challenge for the stability and vitality of forest ecosystems. In the temperate forests of Central Europe, the natural forest vegetation is dominated ... -
Genetic analyses to determine the genetic variation and region of origin of introduced northern red oak (Quercus rubra L.) populations
(2020-03-20)Northern red oak (Quercus rubra L.) has its natural distribution area in the eastern and north-eastern USA and south-eastern Canada and was first introduced at the end of the 17th century in France. Later, Q. rubra was ... -
Genetische Charakterisierung der slawonischen Stieleiche (Quercus robur subsp. slavonica (Gáyer) Mátyás) in Deutschland
(2024-01-30)The structure and composition of forests have a strong influence on forest ecosystems and their services and functions. From today's perspective, important properties such as ecosystem stability, biodiversity conservation ... -
Implications of forest structure on carbon dioxide fluxes
(2020-05-07)Forests provide numerous crucial ecosystem services to society that are sensitive to climate and to extreme climate events such as droughts. One of the services of interest is the ability to sequester the greenhouse gas ... -
Influence of competition and other factors on crown and stem characteristics of northern red oak
(2022-03-10)Native to northeastern America and southeastern Canada, northern red oak (Q. rubra L.) was introduced to Europe in 1691 and initially planted in parks and gardens. In the following centuries, three silvicultural ... -
Influence of intra- and interspecific competition on timber quality of European beech
(2021-01-21)The timber quality of a single tree is considerably influenced by interactions with other individual trees. These competitive effects from neighbouring trees may be regulated through silvicultural treatments. Consequently, ... -
Influence of mycorrhiza on nutrient physiology of trees in mixed and mono-specific stands along climatic and land use gradients
(2022-05-25)Global change drivers such as climate change, land-use change, anthropogenic N deposition, deteriorating P nutrition and other calamities jeopardize temperate forest ecosystem functions. Essential components for the ... -
Interconnection of a Forest Growth Model and a Structural Model for Young Poplar Trees (Populus spp.)
(2020-03-20)When planting fast-growing tree species such as poplars and willows on agricultural land in short rotation coppice plantations, site selection and the associated yield potential pose a central decision for the practitioner. ... -
Kohlenstoffspeicherung als Teilziel der strategischen Waldbauplanung
(2016-08-09)Carbon sequestration in forests is a highly topical issue in the current climate change debate. The most important carbon pools are living and dead tree biomass, timber products and their substitution effects. The carbon ... -
Kohlenstoffvorrat, Nährstoffvorräte und Wasserdynamik nach forstlichen Eingriffen in Fichtenreinbestände
(2010-06-22)Numerous spruce stands in Germany need to be harvested now or in the foreseeable future, due to either their age, the silvicultural objective of turning from even-aged pure stands to ... -
Kronenstruktur und -dynamik von Rein- und Mischbeständen aus Buche, Fichte und Douglasie
(2022-01-13)In this study, crown traits were examined in order to analyze their change depending on the neighborhood of individual trees and based on this, to compare the crown structure and use of space in pure and mixed stands. The ... -
Laubholz mit niedriger Umtriebszeit in Nordwestdeutschland - Charakterisierung der Vorkommen, Wachstumsmodellierung und waldbauliche Steuerung
(2018-03-02)The supply of short-lived deciduous trees (ALn) in Lower Saxony was analysed using data from the German national forest inventory (NFI, 2002 and 2012). The standard results of the NFI were augmented by own calculations, ... -
Modelle zur Abbildung asymmetrischer Kronenformen und zur Beschreibung der Zuwachsleistung für sechs Baumarten in Nordwestdeutschland
(2014-07-11)The canopy plays an important role in forest ecosystems: its structure, especially size and shape of the crowns and their position in relation to each other, determines the micro-climatic conditions at the forest floor, ... -
Natürliche Waldentwicklung unter dem Einfluss des Borkenkäfers im Nationalpark Berchtesgaden
(2016-06-24)Disturbances are an integral part of forest ecosystems. Integrating single-tree dynamics to large-scale disturbances as windthrows, fire or insect calamities, disturbances influence natural species composition and regeneration ...