French Polar Institute Literature Database -- Query Results

	French Polar Institute Literature Database Home \| Show All \| Simple Search \| Advanced Search	Login Quick Search: Field: contains: ...
	371–380 of 8781 records found matching your query (RSS \| history):

Select All Deselect All

[21–30] << 31 32 33 34 35 36 37 38 39 40 >> [41–50]

List View

Citations

Details

	Records
	Author	Gilg Olivier, Kovacs Kit M, Aars Jon, Fort Jérôme, Gauthier Gilles, Grémillet David, Ims Rolf A, Meltofte Hans, Moreau Jérôme, Post Eric, Schmidt Niels Martin, Yannic Glenn, Bollache Loïc,
	Title	Climate change and the ecology and evolution of Arctic vertebrates			Type	Book Chapter
	Year	2012	Publication	Annals of the New York Academy of Sciences	Abbreviated Journal	Ann. N. Y. Acad. Sci.
	Volume	1249	Issue	1	Pages	166-190
	Keywords	impacts, phenological changes, plasticity, range shifts, adaptations, threat, trophic interactions, mismatches, sea ice, tundra, parasites, geese, shorebirds, rodents, lemmings, large herbivores, seabirds, marine mammals, polar bear,
	Abstract	Climate change is taking place more rapidly and severely in the Arctic than anywhere on the globe, exposing Arctic vertebrates to a host of impacts. Changes in the cryosphere dominate the physical changes that already affect these animals, but increasing air temperatures, changes in precipitation, and ocean acidification will also affect Arctic ecosystems in the future. Adaptation via natural selection is problematic in such a rapidly changing environment. Adjustment via phenotypic plasticity is therefore likely to dominate Arctic vertebrate responses in the short term, and many such adjustments have already been documented. Changes in phenology and range will occur for most species but will only partly mitigate climate change impacts, which are particularly difficult to forecast due to the many interactions within and between trophic levels. Even though Arctic species richness is increasing via immigration from the South, many Arctic vertebrates are expected to become increasingly threatened during this century.
	Programme	388,1036
	Campaign
	Address
	Corporate Author				Thesis	Bachelor's thesis
	Publisher	Blackwell Publishing Inc	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1749-6632	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	3962
Permanent link to this record



	Author	Grob M, Schmittbuhl J, Toussaint R, Rivera L, Santucci S, Måløy K J,
	Title	Quake Catalogs from an Optical Monitoring of an Interfacial Crack Propagation			Type	Journal Article
	Year	2009	Publication	Pure and Applied Geophysics	Abbreviated Journal
	Volume	166	Issue	5-7	Pages	777 -799
	Keywords	Earth and Environmental Science,
	Abstract	Using an experimental setup which allows to follow optically the propagation of an interfacial crack front in a heterogeneous medium, we show that the fracture front dynamics is governed by local and irregular avalanches with large velocity fluctuations. Events defined as high velocity bursts are ranked in catalogs with analogous characteristics to seismicity catalogs: time of occurence, epicenter location and energy parameter (moment). Despite differences in the fracturing mode (opening for the experiments and shear rupture for earthquakes), in the acquisition mode and in the range of time scales, the distributions of moment and epicenter jumps in the experimental catalogs obey the same scaling laws with exponents similar to the corresponding distributions for earthquakes. The record-breaking event analysis also shows very strong similarities between experimental and real seismicity catalogs. The results suggest that the dynamics of crack propagation is controlled by the elastic interactions between microstructures within the material.
	Programme	133
	Campaign
	Address
	Corporate Author				Thesis
	Publisher	Birkhäuser Basel	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0033-4553	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	2167
Permanent link to this record



	Author	Louzao Maite, Wiegand Thorsten, Bartumeus Frederic, Weimerskirch Henri,
	Title	Coupling instantaneous energy-budget models and behavioural mode analysis to estimate optimal foraging strategy: an example with wandering albatrosses.			Type	Journal Article
	Year	2014	Publication	Movement ecology	Abbreviated Journal
	Volume	2	Issue	1	Pages	8-8
	Keywords
	Abstract	BACKGROUND: How foragers move across the landscape to search for resources and obtain energy is a central issue in ecology. Direct energetic quantification of animal movements allows for testing optimal foraging theory predictions which assumes that animals forage so as to maximise net energy gain. Thanks to biologging advances, we coupled instantaneous energy-budget models and behavioural mode analysis to test optimal foraging theory predictions on wandering albatross Diomedea exulans during the brooding period. Specifically, the instantaneous energy-budget model considered the energetic balance (i.e., the difference between empirical energy gain data and modelled energy expenditure via heart rate values) along the trajectory of a given individual. Four stereotypic instantaneous behavioural modes were identified based on trajectory properties (e.g., speed and turning angle) by applying a new algorithm called Expectation Maximization Binary Clustering. Previous studies on this species have shown that foraging-in-flight is the optimal foraging strategy during the incubation period when albatrosses undertake long-distance movements but no specific foraging strategy has been determined for shorter foraging movements (e.g., brooding period).
	Programme	109
	Campaign
	Address
	Corporate Author				Thesis
	Publisher	BioMed Central Ltd	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	5071
Permanent link to this record



	Author	van Dongen Wouter F D, White Joël, Brandl Hanja B, Moodley Yoshan, Merkling Thomas, Leclaire Sarah, Blanchard Pierrick, Danchin Etienne, Hatch Scott A, Wagner Richard H,
	Title	Age-related differences in the cloacal microbiota of a wild bird species.			Type	Journal Article
	Year	2013	Publication	BMC ecology	Abbreviated Journal	1472-6785
	Volume	13	Issue	1	Pages	11-11
	Keywords	Age Factors, Animals, Animals, Wild, Animals, Wild: growth & development, Animals, Wild: microbiology, Bacteria, Bacteria: classification, Bacteria: genetics, Bacteria: isolation & purification, Charadriiformes, Charadriiformes: growth & development, Charadriiformes: microbiology, Cloaca, Cloaca: microbiology, Female, Male, Microbiota, Molecular Sequence Data, Phylogeny,
	Abstract	BACKGROUND: Gastrointestinal bacteria play a central role in the health of animals. The bacteria that individuals acquire as they age may therefore have profound consequences for their future fitness. However, changes in microbial community structure with host age remain poorly understood. We characterised the cloacal bacteria assemblages of chicks and adults in a natural population of black-legged kittiwakes (Rissa tridactyla), using molecular methods.
	Programme	1162
	Campaign
	Address
	Corporate Author				Thesis
	Publisher	BioMed Central	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1472-6785	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	5750
Permanent link to this record



	Author	Widmann Michel, Kato Akiko, Raymond Ben, Angelier Frédéric, Arthur Benjamin, Chastel Olivier, Pellé Marie, Raclot Thierry, Ropert-Coudert Yan,
	Title	Habitat use and sex-specific foraging behaviour of Adélie penguins throughout the breeding season in Adélie Land, East Antarctica.			Type	Journal Article
	Year	2015	Publication	Movement ecology	Abbreviated Journal
	Volume	3	Issue	1	Pages	30-30
	Keywords	Nature Conservation,
	Abstract	BACKGROUND: Marine predators are ecosystem sentinels because their foraging behaviour and reproductive success reflect the variability occurring in the lower trophic levels of the ecosystem. In an era of environmental change, monitoring top predators species can provide valuable insights into the zones of ecological importance that need to be protected. In this context, we monitored the Adélie penguin (Pygoscelis adeliae) as a bio-indicator near Dumont d'Urville, an area of the East Antarctic sector currently being considered for the establishment of a Marine Protected Area (MPA), using GPS-based tracking tags during the 2012/13 austral summer breeding season.
	Programme	1091
	Campaign
	Address
	Corporate Author				Thesis
	Publisher	BioMed Central	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	2051-3933	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	6155
Permanent link to this record



	Author	Maj Emilie,
	Title	The Horse of Sakha: Ethnic Symbol in Post-Communist Sakha Republic (Iakutiia)			Type	Journal Article
	Year	2009	Publication	Sibirica	Abbreviated Journal
	Volume	8	Issue	1	Pages	68 -74
	Keywords
	Abstract	This report is on contemporary processes related to horse breeding in Sakha (Iakutiia), northeastern Russia. I demonstrate the importance of the horse figure in the philosophy of the Sakha, a hunting and herding people of Siberia, as well as the parallelism between the diminishing utilitarian function of the horse and reinforcing symbolism in the post-communist context.
	Programme	1024
	Campaign
	Address
	Corporate Author				Thesis
	Publisher	Berghahn Journals	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	2013
Permanent link to this record



	Author	Ochyra Ryszard, Lebouvier Marc, Cykowska-Marzencka Beata,
	Title	Bryophytes of Île Amsterdam in the South Indian Ocean: 1. Liverworts			Type	Journal Article
	Year	2014	Publication	Cryptogamie, Bryologie	Abbreviated Journal	1290-0796
	Volume	35	Issue	4	Pages	335-371
	Keywords
	Abstract	The liverworts of Île Amsterdam are surveyed. On the basis of historical collections and specimens collected on the island in 2006 and 2007 some 29 species and one variety belonging to 18 families have been recorded. This means that in comparison with the last survey of the island's hepatics, in 2002, the number of taxa has been nearly doubled. Of these, eight taxa are recorded for the first time from the island, namely Kurzia capillaris (Sw.) Grolle subsp. Stephanii (Renauld ex Steph.) Pós, Adelanthus lindenbergianus (Lehm.) Mitt., Syzygiella colorata (Lehm.) K.Feldberg, Váňa, Hentschel et J.Heinrichs, S. sonderi (Gottsche) K.Feldberg, Váňa, Hentschel et J.Heinrichs, Cephaloziella varians (Gottsche) Steph., Anastrophyllum auritum (Lehm.) Steph., Andrewsianthus marionensis (S.W.Arnell) Grolle and Heterogemma patagonica (Herzog et Grolle) L.Söderstr. et Váňa, whilst Aneura subcanaliculata R.M.Schust. is excluded from the island's hepatic flora. Two taxa, Kurzia capillaris subsp. Stephanii and Gymnomitrion subintegrum (S.W.Arnell) Váňa, are illustrated, and maps of global distribution are presented for Plagiochila minutula (Hook.f. et Taylor) Gottsche, Lindenb. et Nees, Andrewsianthus marionensis, Heterogemma patagonica, Mnioloma fuscum and Gymnomitrion subintegrum. The liverwort flora is distinctly south-temperate to tropical and these two main distribution patterns consist of 12 and eight species, respectively. The subantarctic element is represented by only three species, two species are endemic or near-endemic and five bipolar. Two names, Riccardia insularis Schiffn. and R. novo-amstelodamensis Schiffn., are lectotypified.
	Programme	136
	Campaign
	Address
	Corporate Author				Thesis
	Publisher	Association des Amis des Cryptogames	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1290-0796	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	5751
Permanent link to this record



	Author	Strathdee A T, Bale J S,
	Title	Life On the Edge: Insect Ecology in Arctic Environments			Type	Journal Article
	Year	1998	Publication	Annu. Rev. Entomol.	Abbreviated Journal
	Volume	43	Issue	1	Pages	85-106
	Keywords
	Abstract	The restricted Arctic insect fauna is usually explained by a lack of recolonization since the last glacial period, inadequate supply of suitable resources, or insufficient adaptation to such a harsh environment. These hypotheses and others that attempt to explain the latitudinal gradient of species distributions and abundance are reviewed. Arctic habitats available to insects are strongly heterogeneous, requiring a similarly diverse array of adaptive responses, characteristic of those species that have colonized and survived in such a stressful climate. Important adaptations in morphology (size, wings), behavior (activity patterns, thermoregulation), life cycles, and ecophysiology (cold hardiness, anaerobiosis, desiccation resistance) are discussed. The current focus of global climate change research on polar regions is identifed, particularly the opportunity to study fundamental ecological processes and spatial dynamics in the relatively simple Arctic ecosystems.
	Programme	426
	Campaign
	Address
	Corporate Author				Thesis
	Publisher	Annual Reviews	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0066-4170	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	3989
Permanent link to this record



	Author	Deuss Arwen,
	Title	Heterogeneity and Anisotropy of Earth's Inner Core			Type	Journal Article
	Year	2014	Publication	Annual Review of Earth and Planetary Sciences	Abbreviated Journal	0084-6597
	Volume	42	Issue	1	Pages	103-126
	Keywords	body waves, dynamics, free oscillations, iron, mineralogy, seismology, solidification,
	Abstract	Seismic observations provide strong evidence that Earth's inner core is anisotropic, with larger velocity in the polar than in the equatorial direction. The top 60–80 km of the inner core is isotropic; evidence for an innermost inner core is less compelling. The anisotropy is most likely due to alignment of hcp (hexagonal close-packed) iron crystals, aligned either during solidification or by deformation afterward. The existence of hemispherical variations used to be controversial, but there is now strong evidence from both seismic body wave and normal mode observations, showing stronger anisotropy, less attenuation, and a lower isotropic velocity in the western hemisphere. Two mechanisms have been proposed to explain the hemispherical pattern: either (a) inner core translation, wherein one hemisphere is melting and the other is solidifying, or (b) thermochemical convection in the outer core, leading to different solidification conditions at the inner core boundary. Neither is (yet) able to explain all se...
	Programme	133
	Campaign
	Address
	Corporate Author				Thesis
	Publisher	Annual Reviews	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0084-6597	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	5915
Permanent link to this record



	Author	Colinet Hervé, Sinclair Brent J, Vernon Philippe, Renault David,
	Title	Insects in fluctuating thermal environments.			Type	Journal Article
	Year	2015	Publication	Annual review of entomology	Abbreviated Journal	Annu. Rev. Entomol.
	Volume	60	Issue		Pages	123-40
	Keywords	Jensen's inequality, climate change, life history traits, temperature variations, thermal tolerance,
	Abstract	All climate change scenarios predict an increase in both global temperature means and the magnitude of seasonal and diel temperature variation. The nonlinear relationship between temperature and biological processes means that fluctuating temperatures lead to physiological, life history, and ecological consequences for ectothermic insects that diverge from those predicted from constant temperatures. Fluctuating temperatures that remain within permissive temperature ranges generally improve performance. By contrast, those which extend to stressful temperatures may have either positive impacts, allowing repair of damage accrued during exposure to thermal extremes, or negative impacts from cumulative damage during successive exposures. We discuss the mechanisms underlying these differing effects. Fluctuating temperatures could be used to enhance or weaken insects in applied rearing programs, and any prediction of insect performance in the field-including models of climate change or population performance-must account for the effect of fluctuating temperatures.
	Programme	136
	Campaign
	Address
	Corporate Author				Thesis
	Publisher	Annual Reviews	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0066-4170	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	yes
	Call Number				Serial	6129
Permanent link to this record

Select All Deselect All

[21–30] << 31 32 33 34 35 36 37 38 39 40 >> [41–50]

Details

Show Record |