Search results for "Tove"
showing 10 items of 168 documents
A Bayesian stable isotope mixing model for coping with multiple isotopes, multiple trophic steps and small sample sizes
2022
We introduce a Bayesian stable isotope mixing model for estimating the relative contributions of different dietary components to the tissues of consumers within food webs. The model is implemented with the probabilistic programming language Stan. The model incorporates isotopes of multiple elements (e.g. C, N, H) for two trophic levels, when the structure of the food web is known. In addition, the model allows inclusion of latent trophic levels (i.e. for which no empirical data are available) intermediate between sources and measured consumers. Running the model in simulations driven by a real dataset from Finnish lakes, we tested the sensitivity of the posterior distributions by altering c…
Littoral-pelagic zone food web interactions in fishless, highly humic Lake Mekkojärvi
2007
Harmaahylkeen (Halichoerus grypus) ravinto eri osissa pohjoista Itämerta
2013
Itämeren harmaahylkeiden (Halichoerus grypus) yksilömäärien kasvu viime vuosikymmeninä on aiheuttanut ristiriitoja ammattikalastajien ja hylkeiden välille. Hylkeiden on todettu muun muassa vahingoittavan pyydyksiä ja syövän kalastajille arvokasta saalista myös pyydyksistä, kuten lohta (Salmo salar), sekä karkottavan kalaparvia kalastusalueiden ulkopuolelle. Toisaalta harmaahylkeille uhkana on hukkuminen pyydyksiin sekä lisääntynyt häirintä kalastajien ja meriliikenteen toimesta. Näiden ristiriitojen myötä kiinnostus hylkeiden ravinnosta on lisääntynyt. Hylkeiden ravinnonkäyttöä on perinteisesti tutkittu ruoansulatuskanavan sisällöstä. Tämän menetelmän ongelmana on, että saalislajien sulamat…
Itsearviointia tietoverkon avulla : toimintatutkimus koulukulttuurin muuttamiseksi
2003
Exploring organizational dissent in a global setting
2018
The current research project focuses on a distinctive form of employee voice: organizational dissent. Dissent is the key to correcting organizational misconduct, facilitating group innovation and enhancing both employee satisfaction and organizational performance. Although organizational dissent has garnered substantial scholarly attention over the last two decades, most of these studies were developed in and for the domestic US environment; little is known about how dissent is conceptualized, expressed and received in a different cultural setting. This dissertation aims to complement previous research by investigating the relationship between organizational dissent and workplace freedom of…
Return of the Apex Predator : How Brown Trout (Salmo trutta) Re-Establishment Shapes an Ecosystem
2021
Re-establishment of a declined apex predator fish species in a lake ecosystem may have dramatic effects on other fish and plankton community already inhabiting the ecosystem. We studied mechanistically potential impacts of re-establishment of the brown trout (Salmo trutta) in the west-central European Lake Constance focusing on two commercially important fish species: whitefish and Eurasian perch. We compared simulation model outputs from two versions of an allometric trophic network model for Lake Constance, one with and one without the trout as the apex predator. The re-establishment of the declined brown trout reduced the perch population directly by predation and indirectly by increased…
Chasing writers’ ghosts through a modern city : Augmenting urban space with literary connections during the Tove Jansson walk in Helsinki
2019
The article employs the theme of a literary walk (Watson 2009), a practice of encountering places with literary associations on foot. Urban areas present especially suitable settings for such themed walks, as cities can have multiple literary connections, and literary places are located within a short distance from one another. In this paper, I focus on the sites associated with Tove Jansson (1914– 2001), a Finnish-Swedish artist and writer, internationally known for her books about the Moomins. The study utilises an autoethnographic approach and draws on observations at the sites with connections to Jansson in Helsinki, organised spatially into a walk around the city. I analyse how urban s…