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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
271

Zooplankton distribution in the Arctic Ocean with notes on life cycles

Harding, Gareth C. H. January 1966 (has links)
No description available.
272

Ecology of the Arctic charr (Salvelinus alpinus) in northern Labrador with reference to their parasite faunas

Bouillon, Daniel Richard. January 1985 (has links)
No description available.
273

A culture in transition : a case study of Eastern Arctic students' creative work

Shapiro, Jane A. (Jane Ann), 1953- January 1989 (has links)
No description available.
274

Enhancing Sámi Participation in EU Arctic Policymaking : Lessons from the Arctic Council

Aldegren, Josefin January 2024 (has links)
This study investigates how to enhance Sámi participation in EU Arctic policymaking processes by adopting and adapting participatory practices from the Arctic Council. Through a qualitative content analysis of policy documents and elite interviews, the study identifies that the EU can learn from the Arctic Council by recognizing the Sámi as internal actors, developing their collaborative platforms, and integrating Indigenous Knowledge into policymaking processes. This thesis develops a conceptual framework, integrating the concepts of procedural and intergovernmental self-determination, epistemic belonging, and organizational interdependency to define meaningful Indigenous participation and influence, which guides the analysis. Using this framework, the study contrasts the Arctic Council’s successful practices, where Indigenous Peoples Organizations are treated as equals, with the EU’s tendency to view the Sámi as an external Indigenous group outside of EU borders. The study identifies opportunities for the EU to translate participatory mechanisms that reflect the Sámi’s unique position and integrate their knowledge, as well as barriers such as treaty and resource constraints. By translating Artic Council practices into soft-law, the EU can create an inclusive atmosphere, contributing to meaningful Sámi participation.
275

UTE PÅ TUNN IS? : En kvalitativ studie om klimatdiskurser och disaster diplomacy / On Thin Ice? : A Qualitative Study of Climate Discourses and Disaster Diplomacy

Hyltén, Amalia January 2024 (has links)
The aim of this study has been to analyse the Norwegian climate discourse and itsimplications on disaster diplomacy between the member states of the Arctic Council. For the purpose of this study, disaster diplomacy refers to the occurrence ofcooperation to address the disaster that is climate change. The Arctic was chosen asthe subject due to it being one of the regions most affected by climate change, whichcreates threats to Arctic societies and ecosystems. The concept of disaster diplomacy and John S. Dryzek’s classifications of climatediscourses form the theoretical framework of this study. The analysis was conductedusing a qualitative textual analysis and found that the Norwegian climate discourse ispredominantly environmentalist, seeking proactive measures to mitigate climaterelatedconsequences. Thus, the Norwegian climate discourse can be assumed to createfavourable conditions for disaster diplomacy. However, certain climate-related issuesrisk causing challenges for disaster diplomacy amongst the member states of the ArcticCouncil.
276

The influence of the Mackenzie River Plume on marine larval fish assemblages in the Canadian Beaufort Sea shelf

Wong, Sally 15 September 2011 (has links)
In the Beaufort Sea, freshwater input from the Mackenzie River creates a relatively warm and turbid plume across the coastal shelf region. To determine the effects of the Mackenzie River plume on marine larval fish abundance, distribution and assemblages; this study sampled larval fish by using 500 μm bongo nets and obtaining oceanographic measurements across the plume gradient during July and August of 2007. Three larval fish assemblages were identified within three water masses: the intense plume assemblage was dominated by Pacific herring (Clupea pallasii pallasii), the diffuse plume assemblage was dominated by the sub-family Lumpeninae and the oceanic assemblage was dominated by Arctic cod (Boreogadus saida). Also, results revealed that there were no significant differences in the total larval fish abundances within these water masses. In conclusion, this study suggests that the Mackenzie River plume might be identified as an Ecologically and Biologically Significant Area (EBSA), based on the uniqueness criteria under Canada’s coastal conservation strategy.
277

The influence of the Mackenzie River Plume on marine larval fish assemblages in the Canadian Beaufort Sea shelf

Wong, Sally 15 September 2011 (has links)
In the Beaufort Sea, freshwater input from the Mackenzie River creates a relatively warm and turbid plume across the coastal shelf region. To determine the effects of the Mackenzie River plume on marine larval fish abundance, distribution and assemblages; this study sampled larval fish by using 500 μm bongo nets and obtaining oceanographic measurements across the plume gradient during July and August of 2007. Three larval fish assemblages were identified within three water masses: the intense plume assemblage was dominated by Pacific herring (Clupea pallasii pallasii), the diffuse plume assemblage was dominated by the sub-family Lumpeninae and the oceanic assemblage was dominated by Arctic cod (Boreogadus saida). Also, results revealed that there were no significant differences in the total larval fish abundances within these water masses. In conclusion, this study suggests that the Mackenzie River plume might be identified as an Ecologically and Biologically Significant Area (EBSA), based on the uniqueness criteria under Canada’s coastal conservation strategy.
278

Acoustic remote sensing of Arctic sea ice from long term soundscape measurements / Monitoring de la glace de mer en Arctique à partir de mesure à long terme du paysage acoustique sous-marin

Kinda, Gnouregma Bazile 29 November 2013 (has links)
La fonte rapide des glaces de l'Arctique dans le contexte actuel du réchauffement climatique est un sujet scientifique majeur de ces 30 dernières années. L'Arctique joue un rôle fondamental dans l'équilibre du climat et requiert une attention particulière. Les régions arctiques sont alors surveillées par des observations satellitaires et des mesures in-situ. L'impact climatique de la fonte totale de la glace arctique est encore spéculatif. Des recherches sont donc nécessaires pour le suivi à long terme de l'Océan Arctique, en particulier la dynamique spatio-temporelle de la couverture de glace et ses conséquences sur les écosystèmes. Notre travail s'inscrit dans ce contexte, et est porté sur le paysage sonore des régions polaires avant leur possible industrialisation qui accompagnera la fonte de la glace. Ainsi, nous avons d'abord examiné les conséquences de la disparition du couvert de glace sur les paysages sonores de ces régions. Nous avons alors étudié les variations saisonnières du bruit de fond et ses pilotes environnementaux. De ce fait, nous avons développé un algorithme d'estimation du bruit ambiant afin de pouvoir constituer des séries temporelles à partir des données acoustiques longue durée. Deuxièmement, nous avons étudié les transitoires générés par le comportement mécanique de la banquise en Arctique. Cette étude vise d'une part à comprendre le mécanisme de production de ces transitoires sous la glace, et d'autre part à évaluer leur potentiel comme moyen d'observation de la dynamique de la glace de mer. / The Arctic sea ice melting, in the global warming context, has become a major scientific topic during the last 30 years. The Arctic Ocean plays a fundamental role in the global climate balance and requires a particular attention. The Arctic Regions are then monitored by satellite observations and in-situ measurements. The climatic impact of the total melting of the Arctic sea ice is not yet understood and researches are still needed for long term monitoring of Arctic Ocean, particularly the dynamics of the ice cover and its consequences on the ecosystems. Our work focused on the natural soundscapes of these Polar Regions prior to their possible industrialization. So, we first examined the impact of climate warming alone on polar soundscapes by studying the seasonal variability of ambient noise and its environmental drivers. We then developed an ambient noise estimation algorithm for automatic extraction of this noise component from long term measurements. In second, we examined the acoustic transients generated by the mechanical behavior of the ice cover at its maximum extent. This aims to better understanding of the physical processes involved in under-ice noise production and their potential use for sea ice monitoring.
279

Spojené státy, Čína a vznikající rovnováha sil v Arktidě / The United States, China, and the Emerging Balance of Power in the Arctic

Lavengood, Zachary Colin January 2019 (has links)
The increasing pace of climate change in the last two decades has brought the Arctic, a former geopolitical afterthought, into growing prominence on the global stage. Receding ice and melting tundra have made a cornucopia of rare earth metals and hydrocarbons ripe for extraction as well as opened new shipping lanes which have the potential to revolutionize how goods are moved around the planet. In this emerging environment is a budding balance of power which involves the most powerful actors in the world-system, two of which, the United States of America and the People's Republic of China, are the focus of this thesis. Their respective arctic policies shape the balance of power for not only themselves, but for all other actors in the theater. The United States' laissez faire attitude towards the Arctic has caused it to fall behind the progress of other powers in the region which could make it difficult to assert its influence in the theater in the future. China however has chosen to follow an ambitious arctic policy despite its geographical distance from the region, and has given the arctic a prominent position in its greater Belt and Road project, much to the suspicion of traditional arctic powers. Analyzed through a realist lens, the balance of power in the Arctic appears to be stable for the...
280

Aspects of the biology of polar pycnogonids

Richards, Peter Robin January 1976 (has links)
The internal morphology of fixed specimens of Antarctic pycnogonids WDS examined. Theories postulated during the course of these histological studies were then tested and modified by observations on live material and specimens fixed specially for histochemistry on visits both to the Arctic and d Antarctic. Live material was also transported back to Britain from these regions and cultured in refrigerated marine aquaria. The digestive system was studied in considerable detail. It is suggested that digestion is intracellular with gut cells changing their morphology during their lifetime. Embryo cells develop into Absorptive cells which at some stage take up a glandular appearance but not a glandular function. There are therefore two gut cell types, 'Embryo' and 'Absorptive/glandular'; this is in disagreement with some previous authors who separate the latter. The rele of the gut cell in the light of present day lysosome theory is discussed and a re-interpretation of work by previous authors suggested. It is found that the digestive process is slow and the prey tastes of the species studied, catholic. Furthermore, it is found that some species can survive for long periods without appearing to feed. Suggestions are made as to the significance and mechanisms of these phenomena. Mass transport in the body cavities is considered flnd compared with that of Hydra, an animal with which previous authors have made comparisons; - their philosophy is questioned. Blood flow, heartbeat and intestine movements are also considered and suggestions for future studies made. The role of blood itself is studied a possible clotting system described. Preliminary experiments on blood electrophoresis and chromatography indicate that such techniques may be useful in clarifying some complexities of pycnogonid classification and might provide a means by which future workers in the field might better link nutritional state, mass transport, digestion and external environment conditions.

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