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Université de Neuchâtel

Biology of 'Borrelia burgdorferi'-infected and non-infected 'Ixodes ricinus' ticks in the context of climate change

Herrmann, Coralie ; Gern, Lise (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2013.

Ixodes ricinus is known to display little resistance to desiccation. This tick is particularly exposed to desiccating conditions while questing for a host on the vegetation. Therefore, survival under hot and dry conditions in field-collected I. ricinus nymphs and adults was studied by exposing ticks to desiccating conditions created in the laboratory using saturated salt solutions...

Université de Neuchâtel

Riverbank filtration within the context of river restoration and climate change

Diem, Samuel ; Hunkeler, Daniel (Dir.) ; Schirmer, Mario (Codir.)

Thèse de doctorat : Université de Neuchâtel, 2013.

Drinking water derived by riverbank filtration is generally of high quality and is an important source of drinking water in several European countries. In the future however, riverbank-filtration systems will face two major challenges – river restoration and climate change. The goal of this Ph.D. Thesis was to deepen the understanding of physical and biogeochemical processes that occur during...

Université de Neuchâtel

Migration and Climate Change: An Overview

Piguet, Etienne ; Pécoud, Antoine ; de Guchteneire, Paul

In: Refugee Survey Quarterly, 2011, vol. 33, no. 3, p. 1-23

Climate change has become a major concern for the international community. Among its consequences, its impact on migration is the object of increasing attention from both policy-makers and researchers. Yet, knowledge in this field remains limited and fragmented. This article therefore provides an overview of the climate change – migration nexus: on the basis of available empirical findings, it...

Université de Neuchâtel

A critical discussion on the impact of glacier shrinkage upon population mobility in the bolivian andes

Kaenzig, Raoul

(Working Papers MAPS ; 7)

This article examines the role of glacial retreat on people migration in the Bolivian Andes. In the Andean region, glacial retreat is one of the most noticeable effects of global warming. Significant acceleration in glacial melting has been observed since the 1980s and glacial runoff is vital to the region, supporting local ecosystems as well as providing water for drinking, irrigation and energy...

Université de Neuchâtel

Global warming issues are here : Ethnography of a Motionless Relocation in Kivalina, Alaska

Durrer, Patrick ; Fresia, Marion (Dir.) ; Plattet, Patrick (Codir.)

Mémoire de master : Université de Neuchâtel, 2011.

Kivalina is an old Iñupiaq summer camp located on the southern end of a barrier reef island in Northwest Alaska. The location was transformed into a colonial settlement during the early 1900s. The population and the size of the village have been growing ever since then. For the last two decades, Kivalina residents have been experiencing significant local environmental changes and hazards such as...

Université de Neuchâtel

Worldwide biogeography and systematics of Sapindaceae : a molecular and taxonomic survey combining large data sets and novel methodological approaches

Bürki, Sven ; Küpfer, Philippe (Dir.) ; Alvarez, Nadir (Codir.)

Thèse de doctorat : Université de Neuchâtel, 2009 ; Th. 2089.

The economically important soapberry family (Sapindaceae; Sapindales) comprises about 1900 species (distributed into ca. 140 genera; e.g., Litchi, Paullinia) mainly found in tropical regions, with only a few genera being restricted to temperate areas. For more than a century, the circumscription of the family (especially the potential inclusion of Aceraceae and Hippocastanaceae within the...

Université de Neuchâtel

Climate change, anthropogenic disturbance and the northward range expansion of Lactuca serriola (Asteraceae)

D'Andrea, Luigi ; Broennimann, Olivier ; Kozlowski, Gregor ; Guisan, Antoine ; Morin, Xavier ; Keller-Senften, Julia ; Felber, François

In: Journal of Biogeography, 2009, vol. 36, p. 1-15

Aim The distribution range of Lactuca serriola, a species native to the summer-dry mediterranean climate, has expanded northwards during the last 250 years. This paper assesses the influence of climate on the range expansion of this species and highlights the importance of anthropogenic disturbance to its spread. Location Central and Northern Europe. ...

Université de Neuchâtel

Recent invasion of the mountain birch Betula pubescens ssp. tortuosa above the treeline due to climate change: genetic and ecological study in northern Sweden

Truong, C. ; Palmé, A. E. ; Felber, François

In: Journal of Evolutionary Biology, 2006, vol. 20, no. 1, p. 369-380

Mountain birch, Betula pubescens ssp. tortuosa, forms the treeline in northern Sweden. A recent shift in the range of the species associated with an elevation of the treeline is commonly attributed to climate warming. Using microsatellite markers, we explored the genetic structure of populations along an altitudinal gradient close to the treeline. Low genetic differentiation was...

Université de Neuchâtel

Pollen dans l’air du Plateau suisse : paramètres climatiques et nouveaux risques pour les allergies

Clot, Bernard ; Küpfer, Philippe (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2007 ; Th.1964.

L'augmentation spectaculaire de la prévalence des allergies au pollen dans les dernières décennies a stimulé le développement de l’aérobiologie. Le but de ce travail consistait à mieux circonscrire les paramètres climatiques et météorologiques qui influencent la saison pollinique, dans une perspective prédictive, à évaluer l’influence du changement climatique sur la saison...