Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 26 for “"montane forest"”.
-
Pollination Biology of Gentianales in a Southern Ecuadorian Montane Forest
… and Rubiaceae) was investigated in a tropical montane forest in southern Ecuador. This study is part of an interdisciplinary project on the diversity and functioning of a montane ecosystem, and provides important results with respect to pollination biology. Such data are rarely collected for …
-
The Role of Fire in Montane Forest Environments in the Willamette National Forest, Oregon
… Blair Lake watershed in the Willamette National Forest of Oregon. The record shows that during the late glacial period, overall fire frequency was relatively low. <em>Pinus </em>and <em>Abies </em>were the dominant vegetation, along with <em>Pseudotsuga </em>and <em>Alnus</em>, suggesting that an …
-
Ectomycorrhizal associations in tropical montane forest: insights into their influence on nutrient cycling and functional responses to soil fertility
In Panamanian montane forest, the ectomycorrhizal tree Oreomunnea mexicana forms monodominant stands where it accounts for up to 70% of individuals. Monodominance is unexpected in tropical forest because the accumulation of host-specific pathogens is thought to limit the local abundance of …
-
Analysis of the "nurse-tree effect" of exotic shelter trees on the growth of the indigenous Podocarpus falcatus in an Ethiopian montane forest
Ethiopian forests disappear with a rate of 1.1% per year due to the high demand of firewood and timber. To protect the remaining parts of the forests, exotic tree plantations were established 60 years ago. But there are considerable concerns regarding exotic plantations: they have the reputation to …
-
Changing Human Impact On The Montane Forests Of The Eastern Andean Flank, Ecuador
The montane cloud forests of South America are some of the most biodiverse habitats in the world, whilst also being especially vulnerable to climate change and human disturbance. Today much of this landscape has been transformed into a mosaic of secondary forest and agricultural fields. This thesis …
-
Diversity of geometrid moths in a montane rainforest in Ecuador
… family of geometrid moths was investigated in a montane forest at the border of the Podocarpus National Park in southern Ecuador along an altitudinal gradient ranging from 1,040 m to 2,677 m above sea level. This study is part of a larger interdisciplinary project on diversity and functioning of …
-
Past Environmental Change On The Eastern Andean Flank, Ecuador
… the world’s most biodiverse ecosystems. Andean montane forests are threatened due to anthropogenic pressures and both current and projected climate change. This thesis examines the palaeoecological history of two stratigraphic sequences (Mera Tigre West [MTW] and Mera Tigre East [MTE]) obtained …
-
ECOLOGY OF GROUND-DWELLING CARABID BEETLES (COLEOPTERA: CARABIDAE) IN THE PERUVIAN ANDES
… of insect diversity and richness in Andean montane forest habitats. The main goal of the present research was to investigate the ecology of carabid beetles at different altitudes in southeastern Peru (Coleoptera: Carabidae). Changes in species richness, species assemblages, and wing and body …
-
Impact of climate change on extinction risk of montane tree species.
… and reviewing the current conservation status on montane forest in the Tropical Andes. Starting with a global analysis, the potential impacts of climate change on montane ecoregions is investigated, by identifying those that are more vulnerable to the expected changes in temperature and …
-
Effects of soil nutrient availability on the development of tropical monodominance and subordinate species composition in montane forests
Although tropical forests are well known for harbouring some of the highest levels of plant diversity in the world, natural areas occur where a single tree species dominates the forest stand. The presence of these monodominant forests therefore represents an unusual and intriguing phenomenon. …
-
Soil respiration, microbial respiration and mineralisation in soils of montane rainforests of Southern Ecuador: influence of altitude
… of land use and climate change in tropical forests on the global carbon budget are of principal interest in the recent research, as these forests amount to about 48 % of the world’s forested area. Interest has been focused on lowland tropical forests mainly, but tropical montane forests …
-
Causes and consequences of the postfire increase in deer mouse (Peromyscus maniculatus) abundance
… in mice for conifer recruitment in burned forest. I documented a shift in small mammal communities away from more specialized species such as red-backed voles (Myodes gapperi) and shrews (Sorex spp.) and towards greater abundance of generalist deer mice after a wildfire in montane forest. I …
-
Causes and consequences of the postfire increase in deer mouse (Peromyscus maniculatus) abundance
… in mice for conifer recruitment in burned forest. I documented a shift in small mammal communities away from more specialized species such as red-backed voles (Myodes gapperi) and shrews (Sorex spp.) and towards greater abundance of generalist deer mice after a wildfire in montane forest. I …
-
Biogeochemical Consequences of Hydrologic Conditions in a Tropical Montane Rain Forest in Ecuador
Tropical montane forests regulate the hydrological cycles of high-elevation areas being an important service for the local population. The objectives of my work were (1) to determine the major hydrological flow paths, (2) to quantify concentrations of dissolved organic C and organic and inorganic …
-
Phylogenetic Analyses of Andean and Amazonian Tree Communities in Ecuador
<p>The forests of Ecuador are known for their high levels of diversity and endemism, classifying the country as a biodiversity hotspot. Both the western Amazon and Andean montane forests are richly populated with tropical tree species that have been little studied in a community phylogenetic …
-
SPATIAL VARIABILITY IN SPECIES COMPOSITION IN NEOTROPICAL MONTANE TREE COMMUNITIES
… different elevational transects in tropical montane cloud forest (TMCF) between 1500 and 3600 m and (2) across a ∼ 40 km landscape transect near tree line above 3200 m in southeastern Peru. Stand variables were correlated with explanatory variables such as geographic distance, …
-
Population Genetic and Hybridization Studies of Three Bornean Bird Species: Mountain Black-eye (Chlorocharis emiliae), White-rumped Shama (Copsychus malabaricus), and Oriental Magpie-robin (Copsychus saularis)
… peaks, and even during glacial periods when montane forest descended in elevation its populations apparently remained isolated from one another. C. malabaricus is a forest interior species that was divided into two populations in the early Pleistocene. Its populations have only recently come …
Page 1 of 2