Aineistot 71-80 / 113
Structural complexity and social cohesion in gregarious animals: from conflict to cooperation
(Turun yliopistoAnnales Universitatis Turkuensis A II 327, 2016-10-28)
A social lifestyle is abundant in nature. The social interactions between animals form the basis for complex, highly dynamic structures and may determine group-level processes such as group cohesion. Social behavior is ...
Evolutionary Ecology of Mountain Birch in Subarctic Stress Gradients: Interplay of Biotic and Abiotic Factors in Plant-Plant Interactions and Evolutionary Processes
(Turun yliopistoAnnales Universitatis Turkuensis A II 233, 2009-02-28)
In nature, variation for example in herbivory, wind exposure, moisture and pollution impact often creates variation in physiological stress and plant productivity. This variation is seldom clear-cut, but rather results in ...
Bacterial community structure and petroleum hydrocarbon degradation in the Baltic Sea
(Turun yliopistoAnnales Universitatis Turkuensis A II 303, 2015-05-15)
The Baltic Sea is unique by its biological, geochemical and physical features. The number of species of larger organisms is small and the species composition is distinctive. On the contrary microbial communities are diverse. ...
Abiotic and biotic effects on secondary sexual traits at the population and individual levels in a passerine bird
(Turun yliopistoAnnales Universitatis Turkuensis A II 322, 2016-10-07)
Sexual selection is a major evolutionary force that may lead to changes in morphology, behaviour, mating systems, life history evolution and even speciation and extinction. In this thesis, I studied how abiotic and biotic ...
Avian Evolutionary Genomics: Studies of Ficedula Flycatchers
(Turun yliopistoAnnales Universitatis Turkuensis AII 218, 2007-12-08)
In this thesis, different genetic tools are used to investigate both natural variation and speciation in the Ficedula flycatcher system: pied (<i>Ficedula hypoleuca</i>) and collared (<i>F. albicollis</i>) flycatchers. The ...
Maternal effects in birds - the ecological and evolutionary significance of yolk androgens and other egg components
(Turun yliopistoAnnales Universitatis Turkuensis A II 254, 2010-09-24)
Taxonomy and Species Richness of Amazonian Pimplinae and Rhyssinae (hymenoptera: ichneumonidae)
(Turun yliopistoAnnales Universitatis Turkuensis A II 299, 2015-02-20)
The Amazonian region, the biggest rain forest of our planet, is known for its extraordinary biodiversity. Most of this diversity is still unexplored and new species of different taxa are regularly found there. In this ...
Guest ants and ant guests in red wood ant nests
(Turun yliopisto, 2017-12-09)
Red wood ants (Formica rufa group) impact forest ecosystems in a multitude of ways and can thus be considered as ecosystem engineers. Although they are highly efficacious predators of many arthropods, their nests host a ...
Molluscan radiations and landscape evolution in Miocene Amazonia
(Turun yliopistoAnnales Universitatis Turkuensis A II 232, 2009-02-21)
This PhD study aims to exploit the rich archive provided by the Miocene mollusc fauna of the Pebas Formation and other inland Miocene Amazonian formations to reconstruct landscape evolution and biotic development in lowland ...
Spatial behaviour, habitat use and breeding performance of a long-lived raptor in the context of wind energy
(Turun yliopisto, 2018-03-16)
Natural ecosystems and associated biota suffer from a wide range of human activities, including habitat destruction, land-use changes and climate warming. Easily subject to disturbance and often requiring large hunting ...