Browsing Naturwissenschaften, Mathematik und Informatik by Referee "Vidal, Stefan Prof. Dr."
Now showing items 21-40 of 73
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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 ... -
Chemical interactions between Verticillium longisporum and oilseed rape Brassica napus
(2014-05-20)Verticillium longisporum is a devastating vascular pathogen which infects plants from Brassicacae including oilseed rape Brassica napus, the pathogen infects the plant through the root and enters the vascular system to ... -
Factors regulating the population dynamics and damage potential of pollen beetle (Meligethes aeneus F.) on crops of oilseed rape
(2014-05-15)The pollen beetle Meligethes aeneus (Fabricius) (Col.: Nitidulidae) is one of the most important pests of oilseed brassicas in Europe. Due to extensive use of pyrethroids and the limited supply of registered insecticide ... -
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 ... -
Scale- and trait dependent responses of bird communties to lowland rainforest restoration and frugivore-bird-seed interaction networks in Sumatra, Indonesia
(2014-02-10)Recovery of tropical secondary forest will require human assistance. The first important part in forest restoration is understanding the existing biodiversity and ecosystem service within the secondary forest and use this ... -
Development of an „Attract & Kill“ strategy for the control of western corn rootworm larvae
(2013-07-31)The western corn rootworm (WCR - Diabrotica virgifera virgifera Coleoptera: Chrysomelidae) is an important maize pest worldwide and the most damaging part of the beetle’s life cycle is the below ground feeding of the larvae ... -
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 ... -
Local and landscape management effects on syrphid fly guilds: flower strips, farming practice and hedges
(2013-02-26)During the last decades, agriculture has transformed into highly effective and economically optimized production systems with extended cultivation areas and increased usage of fertilizers and pesticides. This development ... -
Plant-herbivore-predator communities and grassland management intensity - Implications for biodiversity conservation practices on local and landscape scales
(2013-01-23)The rapid growth of the human population and the concomitant demands for fuel, food and agricultural products put increasing pressures on ecosystems around the world. This has become a major driver of global environmental ... -
Ant community structure and biological control in Indonesian cacao agroforestry: long-term changes, land-use management and precipitation gradients
(2012-12-06)Land-use and climate change are the most important driver of biodiversity loss in terrestrial ecosystems. In agricultural habitats, intensification of agricultural management through the conversion to monocultures and ... -
Pollinator biodiversity, functional complementarity and dynamic plant-pollinator interaction networks
(2012-11-06)Worldwide declines in biodiversity have prompted concerns about the functioning of ecosystems that may rely on it. This is also true for the pollination of plants, which is essential for the reproduction and thus long-term ... -
Odour signals relevant to beetles in deadwood habitats - odorants, olfaction and behaviour.
(2012-09-26)The overall objective of this work was to evaluate and determine volatile chemical cues (infochemicals) that determine insect-wood interactions. The deadwood habitat comprises species that reproduce and spend obligatory ... -
Diversity and distribution patterns of foliar fungal endophytes in Theobroma cacao in Central Sulawesi and interactions between endophytes and host plant
(2012-04-24)Tropical plants are colonized by a highly diverse community of fungal endophytes. Factors contributing to fungal endophyte diversity pattern and underlying mechanisms are, however, largely unknown. Interactions between ... -
Agricultural intensification, biological pest control and spatio-temporal changes in food web structure
(2011-11-22)Agricultural intensification (AI) is a major driver of losses in agrobiodiversity and associated ecosystem functions such as biological control, thereby indirectly affecting agricultural ... -
Long-term development of different grassland insect communities in Central Europe since the 1950s
(2011-09-13)Central European landscape considerably changed during the second half of the 20th century. These changes are probably mainly caused by modern agriculture. Today, Central Europe consists ... -
Breeding for a reduced glucosinolate content in the green mass of rapeseed to improve its suitability for biogas production
(2011-08-03)Brassica napus L., a plant that belongs to the Brassicaceae family is one of the main oil crops. Inside its seeds glucosinolates appear to be the main secondary glycoside, sugar containing ... -
Lethal and sublethal effects of insecticides on mortality, migration and host searching behaviour of tersilochine parasitoids on winter oilseed rape
(2011-06-30)Oilseed rape crops are attacked by various economically important insect pests that require frequent treatments of broad spectrum insecticides. The extensive usage of insecticides might ... -
Interaction of maize root associated fungi and the western corn rootworm
(2011-04-27)Diabrotica virgifera virgifera, the western corn rootworm (WCR), is an invasive root feeding maize pest in Europe, which was accidentally introduced from the USA. The presented thesis is ... -
Effect of Brassica genotype on the infestation by cabbage stem weevil Ceutorhynchus pallidactylus (Mrsh.) (Col.: Curculionidae) and the parasitism of stem weevil larvae
(2010-12-21)The search for plant resistance to insect pests in oilseed rape (Brassica napus L. var. oleifera Metzg.) is still in an early stage of development. In this study, a wide spectrum of ... -
The role of sown wildflower strips for biological control in agroecosystems
(2010-07-02)As agriculture represents the main land user, agro-ecosystems are major drivers of landscape structure, biodiversity and associated ecosystem services. The extension of monocultures and ...