Sökning: "conservation"

Visar resultat 1 - 5 av 888 avhandlingar innehållade ordet conservation.

1. 1. Population genetic analyses in the orchid genus Gymnadenia : a conservation genetic perspective

   Författare :Susanne Gustafsson; Pia Mutikainen; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Genetic engineering; Orchidaceae; Gymnadenia; conservation; microsatellites; genetic structure; mating pattern; Genteknik; Genetic engineering including functional genomics; Genteknik inkl. funktionsgenomik; naturvårdsbiologi; Conservation Biology;

   Sammanfattning : Small populations are facing a particular risk of extinction due to a lack of appropriate genetic diversity and associated negative effects, factors dealt with in the discipline of conservation genetics. Many orchid species exhibit characteristics that make them a perfect study object in the scope of conservation genetics. LÄS MER

3. 2. Symmetries and conservation laws

   Författare :Raisa Khamitova; Börje Nilsson; Claes Jougréus; Maria Luz Gandarias; Växjö universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; conservation law; Noether s theorem; Lie group analysis; Lie-Bäcklund transformations; basis of conservation laws; formal Lagrangian; self-adjoint equation; quasi-selfadjoint; equation; nonlocal conservation law; Mathematical physics; Matematisk fysik;

   Sammanfattning : Conservation laws play an important role in science. The aim of this thesis is to provide an overview and develop new methods for constructing conservation laws using Lie group theory. The derivation of conservation laws for invariant variational problems is based on Noether’s theorem. LÄS MER

4. 3. Pastoralists, Mobility and Conservation : Shifting rules of access and control of grazing resources in Kenya's northern drylands

   Författare :Annemiek Pas Schrijver; Lowe Börjeson; Elizabeth E. Watson; Mats Widgren; Caroline Upton; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; pastoralism; livestock mobility; conservation; community conservancy; Northern Rangelands Trust; political ecology; access; institutions; governmentality; territoriality; Samburu; Laikipia; Isiolo; Kenya; Geography with Emphasis on Human Geography; geografi med kulturgeografisk inriktning;

   Sammanfattning : Pastoral mobility is seen as the most effective strategy to make use of constantly shifting resources. In northern Kenya, mobile pastoralism as a highly-valued strategy to manage grazing areas and exploit resource variability is becoming more complex. LÄS MER

5. 4. Behavioural aspects of conservation breeding : Red junglefowl (Gallus gallus) as a case study

   Författare :Jennie Håkansson; Per Jensen; Elsbeth McPhee; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Behaviour; Conservation; Red junglefowl; Gallus gallus; Captivity; Ethology and behavioural ecology; Etologi och beteendeekologi;

   Sammanfattning : Ett stort antal utrotningshotade djurarter ingår idag i bevarandeprogram världen över. Små populationer hålls då i skyddade miljöer, exempelvis i djurparker, och i många fall är målet att återintroducera djur till naturen. LÄS MER

7. 5. Reconfiguring Conservation and Ontological Politics : An Ethnography of Campesinos and Scientists in the Andean Páramos

   Författare :Cesar Camilo Castillo Estupiñan; Steve Woolgar; Jonas Anshelm; Brit Ross Winthereik; Linköpings universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Conservation; Ontology; Ontological politics; Ethnography; Páramos; Campesinos; Scientific practices; Boundary-making; Space; Differences; Intervention;

   Sammanfattning : This thesis offers an empirical analysis that critically assesses and expands the concept of “ontological politics” as a tool for understanding environmental conservation practice. It takes the case of páramos conservation in Colombia, a high mountain ecosystem located above 2600 mts altitude. LÄS MER