Dokumente Fakultät für Agrarwissenschaften (inkl. GAUSS) nach Gutachter "Tscharntke, Teja Prof. Dr."
Anzeige 1-20 von 50
-
Local and landscape threats to bee and wasp populations in agricultural landscapes
(2023-12-01)The transformation and intensified use of the agricultural landscape in central Germany in the past decades has led to the fragmentation and loss of semi-natural habitats, threatening biodiversity including insects. Bees ... -
Biodiversity and ecosystem services in a tropical smallholder landscape in Madagascar
(2023-01-20)The overarching theme of this thesis is how biodiversity and ecosystem services respond to land-use change by smallholder farming in north-eastern Madagascar. The region is a global biodiversity hotspot and a major vanilla ... -
Farmland biodiversity and associated ecosystem services across tropical rural- urban landscapes
(2022-07-20)Driven by the unprecedented growth of human populations, cities all over the globe are expanding. Especially Asia and Africa are hotspots of current and future urbanization. As cities grow, they extend in area, sprawling ... -
Butterfly diversity and land manager decision-making in critically endangered South African renosterveld
(2022-07-11)Addressing global biodiversity loss requires understanding complex human-nature relations. This is imperative in global biodiversity hotspots, areas that contain exceptional endemism and have lost significant amounts of ... -
Performance of organic and conventional crop varieties and species mixtures under stress
(2022-02-24)The conservation of agrobiodiversity is considered a priority to ensure the sustainability and sovereignty of food production under changing climatic and socio-economic conditions. In this context, substantial value is ... -
Coffee Productivity and Water Use in Open vs Shaded Systems along an Altitudinal Gradient at Mt. Elgon, Uganda
(2021-02-05)Coffee is one of the most important agricultural products worldwide. It provides the livelihood of 25 million farmers in tropical countries and of approximately 125 million people along the production chain. Furthermore, ... -
Managing strawberry pollination with wild bees and honey bees: Facilitation or competition by mass-flowering resources?
(2020-12-03)Pollination can benefit the yield and quality of the majority of the world’s most important crops and has a great economic value. But today, pollinator abundance and species richness are in decline. One factor driving these ... -
Local and Landscape Effects on Arthropod Communities along an Arable-Urban Gradient
(2018-05-14)The increase and expansion of urbanisation and agriculture intensification has led to a decrease of natural habitats worldwide. Natural habitats offer resources such as food or nesting sites for different arthropod groups. ... -
Biodiversity and ecosystem processes in an experimental island system
(2018-02-16)The field of island research is one of the best researched topics in ecological and evolutionary research. As islands are spatially restricted and basic principles of island colonization are investigated, they display one ... -
Technical and environmental efficiency of smallholder palm oil and rubber production
(2017-08-10)As part of the CRC 990: “Ecological and Socioeconomic Functions of Tropical Lowland Rainforest Transformation Systems (Sumatra, Indonesia)” of the University of Göttingen, this thesis is devoted to the subject of the ... -
A Spatially Explicit Individual-Based Model of the Population Dynamics of the greenhouse whitefly (Trialeurodes vaporariorum), Encarsia formosa and tomato powdery mildew (Oidium neolycopersici) in Tomato Crops.
(2017-07-18)The greenhouse whitefly Trialeurodes vaporariorum – Westwood is one of the most important insect pests in crops. The spatial dynamics and population grow of the insects are affected by different biotic and abiotic factors ... -
Intensification of paddy cultivation in relation to changing agrobiodiversity patterns and social-ecological processes in South India
(2016-07-01)Around the globe, natural and agrarian landscapes are subject to agricultural intensification to meet the increasing and changing demands for resources of the growing population. This intensification takes place at two ... -
Bird Diversity, Functions and Services across Indonesian Land-use Systems
(2016-05-20)In tropical regions, rampant land-use conversion for agriculture threatens biodiversity hotspots. Forests are vanishing, and taxonomic diversity is severely affected by the transformation on a large scale. For mitigating ... -
Changing valuations of cultural ecosystem services along an urban-periurban gradient in Berlin
(2015-11-06)Urban green experiences high use-pressures through differing and conflicting demands. Eco-system services provided by urban green are manifold, with cultural ecosystem services (CES) representing socio-cultural benefits. ... -
Local management and landscape context effects on bee pollination, ant seed predation, and yield in Indonesian homegardens
(2015-03-03)Tropical countries contribute substantially to global agricultural production, but the majority of farmers are small-scale subsistence farmers. Their comparably low agricultural productivity is coupled with major yield ... -
Influence of grassland management on the abundance of the endophytic fungi Neotyphodium
(2014-11-26)The endophytic fungus Neotyphodium spec. Glenn, Bacon and Hanlin is common in many temperate grass species. This fungus is known to enhance the resistance of its host to adverse environmental conditions and to promote its ... -
Effects of management on biodiversity and productivity of grazed grassland
(2014-04-30)Grazing is seen as a promising tool to maintain and enhance biodiversity due to the creation of structurally diverse pastures. So far, grassland biodiversity has been studied in relation to various grazing management ... -
Birds, bats and arthropods in tropical agroforestry landscapes: Functional diversity, multitrophic interactions and crop yield
(2014-04-03)Ecosystem services such as the suppression of pest insects may increase productivity of agroforestry systems and thereby increase well-being of smallholders. Tropical birds and bats are effective predators of arthropods ... -
A regional view of an impending invasion: western corn rootworm development in Northern Germany
(2013-05-10)We examined the immature development of the invasive maize pest western corn rootworm (Diabrotica virgifera virgifera LeConte; WCR) under Northern German temperature regimes. This research was part of the Climate impact ... -
Bee pollination of strawberries on different spatial scales – from crop varieties and fields to landscapes
(2013-03-06)The global majority of our crops is dependent on pollination. Hence, pollination contributes to one third of global crop production and is an ecosystem service of high commercial and social importance. Bees are the most ...