Search results for "Ekologi"

Ecology, fisheries and management of wild brown trout populations in boreal inland waters

2010

Eutrophication of aquatic ecosystems is an increasing problem, especially threatening small and shallow freshwater lakes. While the extreme inputs of nutrients (phosphorus and nitrogen) can nowadays be reduced and controlled rather efficiently, additional measures to reverse eutrophication may be needed. These often involve biomanipulation, typically mass removal of cyprinid fish. However, the success of biomanipulations has many times been limited or short lived. The reasons for this are not well known, perhaps because the more subtle impacts of biomanipulation on the ecosystem-wide processes of lakes have not been thoroughly studied. Natural abundance stable isotopes may provide a cost-ef…

Luontoarvojen ennustaminen ja huomiointi maankäytön suunnittelussa päiväperhosten (Hesperioidea, Papilionoidea) avulla

2011

Effects of interspecific relationships in forested landscapes on breeding success in Eurasian treecreeper

2005

Jatkuvat vanhoihin metsiin kohdistuvat metsänhakkuut kaventavat puukiipijöiden ja kekomuurahaisten elinmahdollisuuksia. Havaitsin tämän väitöstyössäni, jonka teemoina olivat puukiipijän ja kekomuurahaisten välinen ravintokilpailu puiden rungoilla ja petojen, lähinnä kärpän, lumikon ja käpytikan vaikutus puukiipijän pesintämenestykseen pesäpönttöpopulaatiossa. Tutkimus on toteutettu Keski-Suomen metsissä Konneveden, Hankasalmen ja Laukaan kunnan alueella vuosina 1990-2003. T his study is focused on the effects of predation to the breeding success of Eurasian treecreeper and resource competition between red wood ants, Formica rufa -group and treecreepers. One of the most important factors in …

Ecological and social impacts of photovoltaic solar power plants and optimization of their locations in northern Chile

2017

Large scale photovoltaic (PV) solar power plants are gaining popularity in Chile. Solar energy potential in northern Chile is one of the best worldwide and true deserts are considered ideal environments for solar power plant projects. Atacama Desert is one of the driest places on earth. Nevertheless, northern Chile is home for many endemic species with 40 different vegetation types. The thesis presents studies of ecological effects (I-II) and location optimization of PV solar power plants in northern Chile (III). For ecological impacts two types of PV solar power plant technologies were studied: fixed mount solar plant and solar- tracking mounts. Study units were placed below the mounts or …

A planetary well-being accounting system for organizations

2024

Transformative changes in the operations of humankind are needed to support the transition towards planetary well-being. We humans organize our everyday lives through organizations. We argue that to understand the role of organizations and to facilitate the transition towards planetary well-being, we need a value-transforming integration of financial and environmental accounting and reporting. We find such integration critical to ensuring that the senior executives of organizations pay attention, and to ensuring that environmental impacts begin to influence the management decisions of the organizations. In this chapter we discuss how and why environmental accounting can and should be integr…

Ontological differences and the pursuit of planetary well-being

2024

This chapter emphasizes the importance of ontological dialogue and methodological choices to the conceptual development and practical enactment of planetary well-being. Starting from the premise that cultural practices, including scientific concepts and methods, shape realities, the chapter suggests approaching nature and culture as entangled with each other. From this perspective, this chapter deals with divergent biocultural realities rather than a single, universal Nature viewed from multiple cultural perspectives. Biocultural realities differ in terms of how well they enable more-than-human communities to regenerate themselves. The chapter proposes anthropologist Anna Tsing’s conceptual…

Planetary well-being

2024

Tensions between the well-being of present humans, future humans, and nonhuman nature manifest in social protests and political and academic debates over the future of Earth. The increasing consumption of natural resources no longer increases, let alone equalizes, human well-being, but has led to the current ecological crisis and harms both human and nonhuman well-being. While the crisis has been acknowledged, the existing conceptual frameworks are in some respects ill-equipped to address the crisis in a way that would link the resolving of the crisis with the pivotal aim of promoting equal well-being. The shortcomings of the existing concepts in this respect relate to anthropocentric norma…

Planetary well-being : Ontology and ethics

2024

This chapter elaborates the ontological and ethical underpinnings and implications of the concept of planetary well-being. We illustrate how planetary well-being can contribute conceptually to transformative thinking and discussing well-being, and to organizing human societies in more life-considerate ways. The chapter focuses on two themes: First, the ontological grounding and implications of planetary well-being, and second, the central ethical underpinnings and ramifications of planetary well-being. We demonstrate how planetary well-being is positioned in the broader ontological and ethical-theoretical landscape, owing to its process-oriented perspective and morally inclusive (non-anthro…

Soil processes are constituents of planetary well-being

2024

Soils play multiple roles in vital ecosystem processes, even though they form only a thin layer between Earth’s atmosphere and lithosphere. Soils are reservoirs of carbon, most nutrients and fresh water while acting as a substrate for plants, a site for decomposition processes, and a sink for harmful substances. The decomposition of dead organic matter and the associated recycling of nutrients are a prerequisite for photosynthesis by green plants and, therefore, for all life forms on Earth. Without healthy soils, the integrity of the Earth system cannot be maintained in the future. Soils are highly diverse habitats, inhabited by both structurally and functionally diversified organisms. Howe…

Ecosystem health and planetary well-being

2024

Healthy ecosystems support the well-being of all organisms on Earth. Yet, the overexploitation of natural resources for human needs and profit has resulted in widespread ecosystem degradation, loss of biodiversity, and climate emergency, which pose fundamental threats to planetary well-being. Impoverished ecosystems may become dysfunctional and fail to provide for the needs of many organisms, including humans and wildlife. Changes in ecosystem functioning and wildlife distributions affect the prevalence and spread of pathogens, with consequences for the health and well-being of human and wildlife communities alike. Increasing contact between humans and domestic and wild animals enable patho…