Sökning: "community dynamics"

Visar resultat 36 - 40 av 290 avhandlingar innehållade orden community dynamics.

1. 36. Baltic Sea phytoplankton in a changing environment

   Författare :Mireia Bertos-Fortis; Catherine Legrand; Ilana Berman-Frank; Linnéuniversitetet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; phytoplankton ecology; cyanobacteria; dynamics; environmental factors; successional patterns; interactions; life strategies; non-ribosomal peptides; diversity; nodularin; N. spumigena; Akvatisk ekologi; Aquatic Ecology;

   Sammanfattning : Future climate scenarios in the Baltic Sea project increasing sea surface temperature, as well as increasing precipitation and river runoff resulting in decreased salinity. These changes can severely impact the dynamics and function of brackish water communities, specifically phytoplankton. LÄS MER

3. 37. Evolving ecological communities in changing environments

   Författare :Jacob Johansson; Evolutionär ekologi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; adaptive dynamics; competition; community evolution; ecological communities; environmental change; evolutionary branching;

   Sammanfattning : This thesis consists of theoretical studies of the evolutionary consequences of environmental change in ecological communities. Paper I and II are concerned with the origin of diversity, i.e. how a single lineage can split into two, under the influence of selection induced by competitive interactions (evolutionary branching). LÄS MER

4. 38. The Interactive Dynamics of Regulation : Exploring the Council of Europe's Monitoring of Ukraine

   Författare :Anders Nordström; Jan Hallenberg; Karl Magnus Johansson; Martin Marcussen; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Transnational regulation; Ukraine; Council of Europe; PACE; monitoring; transformation; responsive regulation; European governance; soft law; human rights; Europeanisation; democratisation; Political science; Statsvetenskap; Political Science; statsvetenskap;

   Sammanfattning : In a time when a host of new and untested democracies seek membership in international organisations founded on liberal norms, the question of how to include new members without jeopardizing community values has become of growing concern, particularly as the regulation of practices in sovereign states often relies on soft moral or political commitment rather than on hard legal obligation. The Council of Europe’s (CoE) monitoring of new members after entry represents a soft method of socialising newcomers. LÄS MER

5. 39. Stewardship in an urban world : Civic engagement and human–nature relations in the Anthropocene

   Författare :Johan Enqvist; Maria Tengö; Örjan Bodin; Bengt G. Karlsson; Richard C. Stedman; Morgan Grove; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; agency; Bengaluru; boundary object; care; civil society; community; environmental ethics; knowledge; natural resource management; New York City; problem of fit; rigidity trap; sense of place; social–ecological system; urbanization; water governance; Sustainability Science; vetenskap om hållbar utveckling;

   Sammanfattning : Never before have humans wielded a greater ability to alter and disrupt planetary processes. Our impact is becoming so noticeable that a new geological epoch has been proposed – the Anthropocene – in which Earth systems might no longer maintain the stable and predictable conditions of the past 12 millennia. LÄS MER

7. 40. Food Web Ecology -- individual life-histories and ecological processes shape complex communities

   Författare :Martin Hartvig; Evolutionär ekologi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; food web; community ecology; community assembly; size-structure; life-history omnivory; ontogeny; trophic interactions; trait based model; topology; emergent organisation; size-spectrum;

   Sammanfattning : This thesis sets out a food web framework for size-structured populations. The framework enables an ecological approach to food web modelling as the individual life-history from birth, through maturation, and ultimately death is explicitly resolved with the use of bioenergetics based on individual body size. LÄS MER