Browsing Naturwissenschaften, Mathematik und Informatik by Referee "Veldkamp, Edzo Prof. Dr."
Now showing items 1-20 of 24
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Responses of net primary production and plant-available soil nutrients to elevated nutrient input in a tropical forest on highly weathered soil
(2022-06-07)Globally, tropical forests are highly productive ecosystems and play a critical role in sequestering anthropogenic carbon dioxide (CO2) from the atmosphere, accounting for up to half of the terrestrial biosphere’s carbon ... -
Soil greenhouse gas (N2O, CO2 and CH4) fluxes from cropland agroforestry and monoculture systems
(2022-04-28)Conventional agriculture is the dominant contributor to negative environmental impacts such as the growth in global greenhouse gas (GHG) emissions, and the challenges are likely to increase with the increasing global food ... -
Trace gas fluxes from soils and tree stems of rainforests and cacao agroforests in the Congo Basin, Cameroon
(2020-06-11)Tropical rainforests play a crucial role in biogeochemical cycles and global climate dynamics. Yet, research efforts to quantify the main sources and sinks of trace greenhouse gases lags behind that of other biomes. The ... -
The environmental impact of selective logging in southern Cameroon: soil disturbance, nutrient budget and greenhouse gas fluxes
(2020-02-26)Tropical forests play an important role in climate change mitigation through carbon sequestration in the vegetation and soils, which can be released to the atmosphere through deforestation and forest degradation. One of ... -
Gross N2O fluxes across soil-atmosphere interface and stem N2O emissions from temperate forests
(2017-05-22)Although nitrous oxide (N2O) is a minor constituent of the atmosphere, it is still of great concern. This is because N2O can significantly affect the physics and chemistry of the atmosphere and thus influence the climate ... -
Consequences of rainforest conversion to smallholder rubber and oil palm plantations on soil trace gas fluxes from highly weathered soils in Sumatra, Indonesia
(2017-01-30)In Sumatra, Indonesia, the establishment of oil palm and rubber plantations is widespread. However, it occurs at the expense of forest area. Since global demand for palm oil and rubber is increasing, forest conversion is ... -
Conversion of lowland forests to rubber and oil palm plantations changes nutrient leaching and nutrient retention efficiency in highly weathered soils of Sumatra, Indonesia
(2016-03-23)Over the last two decades, Sumatra, Indonesia has experienced rapid expansion of rubber and oil palm plantations through conversion of rainforests. This is evident from the 36% decrease in forest area in this region from ... -
Impacts of land-use conversion in Sumatra, Indonesia on soil nitrogen cycling, soil nutrient stocks and ecosystem dynamics
(2015-11-11)Over the last two decades, deforestation rates in Sumatra, Indonesia have rapidly increased resulting in the conversion of large tracts of lowland forest into monoculture plantations of oil palm (Elaeis guineensis) and ... -
Nutrient response efficiency, tree-microbe competition for nutrients and tree neighborhood dynamics in a mixed-species temperate deciduous forest in central Germany
(2015-10-23)In most Central European countries, less than one percent of the remaining broadleaved forest is undisturbed and temperate forests face challenges such as species invasion, climate change and increased nitrogen deposition. ... -
Impacts of land use and biophysical properties on soil carbon stocks in southern Yunnan, China
(2015-01-23)For the montane regions of mainland Southeast Asia (Southwest China, Laos, Cambodia, Myanmar, northeast Thailand, and northwest Vietnam) few data is available on soil organic carbon (SOC) stocks in relation to land use, ... -
Soil greenhouse gas fluxes under elevated nutrient input along an elevation gradient of tropical montane forests in southern Ecuador
(2014-10-29)Tropical forest soils play an important role in Earth’s climate, by exchanging large amounts of greenhouse gases (GHGs) with the atmosphere. This important function might however be altered by human activities, which ... -
Vegetation, climate and environmental dynamics of the Black Sea/Northern Anatolian region during the last 134 ka obtained from palynological analysis
(2013-08-08)As a part of the multidisciplinary project “Dynamics of Mid-latitude/Mediterranean climate in Northern Anatolia/Black Sea region during the last 150 kyr”, this research presents new pollen and organic-walled dinoflagellate ... -
Origin and regulation of soil N<sub>2</sub>O and NO<sub>x</sub> fluxes from coniferous and deciduous temperate forests exposed to chronic high N depositions
(2012-02-01)Nitrogen (N) cycling in Europe and in many other parts of the world has been massively accelerated as a result of agricultural and industrial activities in the last decades. As a consequence, ... -
Trace Gas Fluxes from Tropical Montane Forests of Southern Ecuador
(2011-11-30)Methane (CH4), nitrous oxide (N2O) and carbon dioxide (CO2) are major greenhouse gases but their fluxes in tropical montane forests are hardly known. The distribution of known sources of ... -
Trace gas fluxes and belowground carbon allocation in tropical montane forest soils of Southern Ecuador
(2011-10-12)Tropical forest soils are important sources of the greenhouse gases carbon dioxide (CO2) and nitrous oxide (N2O), and of nitric oxide (NO), a precursor of ozone production. They are also ... -
Drought effects on soil carbon dioxide efflux in two ecosystems in Central Sulawesi, Indonesia
(2010-09-23)Drought response on soil CO2 efflux and production dynamics were examined in two tropical ecosystems in central Sulawesi, Indonesia. Large-scale throughfall displacement roofs were built ... -
CACAO AGROFORESTRY UNDER AMBIENT AND REDUCED THROUGHFALL: TREE WATER USE CHARACTERISTICS AND STAND WATER BUDGETING
(2010-07-13)The world s tropical regions have faced dramatic losses in forest cover during recent decades. Although high rates of rainforest conversion continue today, reforestation is becoming more ... -
Nutrient stocks, acidity, processes of N transformation and net uptake of methane in soils of a temperate deciduous forest with different abundance of beech (Fagus sylvatica L.)
(2009-12-15)Tree species can influence soil properties, processes and related soil functions. Whilst differences between conifers and deciduous tree species in affecting soils properties and functions ... -
Internal Nitrogen Cycling in Tropical Forest Soils
(2009-01-28)Growing human population and activities such as the continued increase in fossil fuel consumption, fertilizer use, and biomass burning have considerably increased the amount of atmospheric ... -
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 ...