Browsing Naturwissenschaften, Mathematik und Informatik by Referee "Tscharntke, Teja Prof. Dr."
Now showing items 1-20 of 69
-
Diversity and pest control services of birds and bats in Peruvian agroforestry landscapes of native cacao
(2024-07-31)Commodity production in the tropics represents a threat for nature conservation, but also an opportunity for developing socio-ecologically sustainable agricultural practices. Cacao production in agroforestry systems has ... -
Global macroecology of ant-plant mutualisms: The role of biotic interactions in shaping species diversity and composition patterns
(2023-12-11)Understanding the mechanisms underlying patterns of species distribution and diversity is a central goal in ecology and biogeography. Biotic interactions have been acknowledged as important factors affecting species diversity ... -
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 ... -
Diversity and composition of tree communities in the mosaic landscape of north-eastern Madagascar
(2022-01-14)In Madagascar, a large percentage of the rural human population faces multifaceted poverty and depends on agriculture and natural resources as main livelihood sources. Consequently, the country’s biodiverse natural ecosystems ... -
Plant community composition and biodiversity of irrigated rice ecosystems in Vietnam and the Philippines
(2021-11-26)Irrigated rice landscapes in tropical and subtropical Asia are complex agroecosystems that have evolved mostly from natural wetlands. Millennia of interaction between human communities and their surrounding ecosystems have ... -
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 ... -
Seasonality and dynamics of the semi-deciduous transition forests of the Araguaia floodplain, Brazil
(2017-06-30)Araguaia floodplain is the large floodplain area in the Neotropics located in the transition zone of Amazon forest and cerrado. The region is characterized by seasonal flooding and pronounced dry seasons. We recorded all ... -
Shade trees in cacao agroforestry systems: influence on roots and net primary production
(2016-09-19)Huge areas of natural forests are rapidly cleared worldwide to make way for agricultural cultivation systems. This has a substantial impact on the functioning of ecosystems, as well as on carbon cycling and hence effects ... -
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 ... -
Land-use impacts on biodiversity and ecosystem functioning of complex multitrophic communities
(2016-02-24)Global biodiversity is rapidly declining, resulting in far-reaching impacts on the functioning of ecosystems and human wellbeing. In recent decades, anthropogenic land use has been identified as a major driver of biodiversity ...