| Records |
| Author |
Manzo Emilie |
| Title |
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Type |
Master 1 |
Year  |
2023 |
Publication |
Rapport de stage de master 1 imabee, univ rennes |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
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| Keywords |
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| Abstract |
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| Programme |
136 |
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| Area |
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Expedition |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8754 |
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| Author |
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| Title |
Quantifying annual spatial consistency in chick-rearing seabirds to inform important site identification |
Type |
Journal |
| Year |
2023 |
Publication |
Biological Conservation |
Abbreviated Journal |
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| Volume |
281 |
Issue |
|
Pages |
109994 |
| Keywords |
Animal tracking Area-based conservation Biotelemetry Key biodiversity areas Marine spatial planning Protected areas Sampling effort Spatial consistency |
| Abstract |
Animal tracking has afforded insights into patterns of space use in numerous species and thereby informed area-based conservation planning. A crucial consideration when estimating spatial distributions from tracking data is whether the sample of tracked animals is representative of the wider population. However, it may also be important to track animals in multiple years to capture changes in distribution in response to varying environmental conditions. Using GPS-tracking data from 23 seabird species, we assessed the importance of multi-year sampling for identifying important sites for conservation during the chick-rearing period, when seabirds are most spatially constrained. We found a high degree of spatial overlap among distributions from different years in most species. Multi-year sampling often captured a significantly higher portion of reference distributions (based on all data for a population) than sampling in a single year. However, we estimated that data from a single year would on average miss only 5 % less of the full distribution of a population compared to equal-sized samples collected across three years (min: ?0.3 %, max: 17.7 %, n = 23). Our results suggest a key consideration for identifying important sites from tracking data is whether enough individuals were tracked to provide a representative estimate of the population distribution during the sampling period, rather than that tracking necessarily take place in multiple years. By providing an unprecedented multi-species perspective on annual spatial consistency, this work has relevance for the application of tracking data to informing the conservation of seabirds. |
| Programme |
109 |
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| ISSN |
0006-3207 |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8546 |
| Permanent link to this record |
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| Author |
Mathurin Dongmo Wamba, Jean-Paul Montagner, Barbara Romanowicz |
| Title |
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Type |
Journal |
| Year |
2023 |
Publication |
Science Advances |
Abbreviated Journal |
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| Volume |
9 |
Issue |
4 |
Pages |
eade3723 |
| Keywords |
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| Abstract |
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| Programme |
133 |
| Campaign |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8631 |
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| Author |
Matthias Vignon, Mingsha Zhou, Angus R. McIntosh, Cristian Correa, Peter A. H. Westley, Lisa Jacquin, Jacques Labonne, Andrew P. Hendry |
| Title |
Trait variation in a successful global invader: a large-scale analysis of morphological variance and integration in the brown trout |
Type |
Journal |
| Year |
2023 |
Publication |
Biological Invasions |
Abbreviated Journal |
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| Volume |
25 |
Issue |
5 |
Pages |
1659-1677 |
| Keywords |
Invasion Morphological integration Phenotypic variation Population size |
| Abstract |
In ecology and evolution, the small population paradigm posits that reduced genetic variation will result in limited phenotypic variation that, in turn, will affect population resilience and potential for adaptation. Over the last decade though, such a paradigm has been questioned, with evidence that mechanisms independent of genetic variation may be also important in shaping phenotypic variation. However, there are few large-scale empirical examples, especially from aquatic ecosystems. Using the large-scale natural experiment afforded by the global invasion of brown trout (Salmo trutta), we quantify standing phenotypic variation in morphology among different introduced ranges, relative to the native range. By using shape variation and morphological integration as indicators of phenotypic variation, we show that neither founding population size nor time since founding (i.e., effect of selection regime) are correlated to the amount of morphological variation, contrarily to common expectations. Beyond founding population size and time since founding, the amount of morphological variation is mostly controlled by factors at the population level rather than at the region level, and is not lower in invaded regions compared to the native range. These results suggest that the dynamics of phenotypic variation may be largely independent of population size and mostly determined by site-specific patterns of selection. |
| Programme |
1041 |
| Campaign |
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Edition |
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| ISSN |
1573-1464 |
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Medium |
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Expedition |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8649 |
| Permanent link to this record |
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| Author |
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| Title |
Investigating the Role of Shrub Height and Topography in Snow Accumulation on Low-Arctic Tundra using UAV-Borne Lidar |
Type |
Journal |
| Year |
2023 |
Publication |
Journal of Hydrometeorology |
Abbreviated Journal |
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| Volume |
24 |
Issue |
5 |
Pages |
853-871 |
| Keywords |
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| Abstract |
Abstract Expanding shrubs in the Arctic trap blowing snow, increasing snow height and accelerating permafrost warming. Topography also affects snow height as snow accumulates in hollows. The respective roles of topography and erect vegetation in snow accumulation were investigated using a UAV-borne lidar at two nearby contrasted sites in northern Quebec, Canada. The North site featured tall vegetation up to 2.5 m high, moderate snow height, and smooth topography. The South site featured lower vegetation, greater snow height, and rougher topography. There was little correlation between topography and vegetation height at both sites. Vegetation lower than snow height had very little effect on snow height. When vegetation protruded above the snow, snow height was well correlated with vegetation height. The topographic position index (TPI) was well correlated with snow height when it was not masked by the effect of protruding vegetation. The North site with taller vegetation therefore showed a good correlation between vegetation height and snow height, R2 = 0.37, versus R2 = 0.04 at the South site. Regarding topography, the reverse was observed between TPI and snow height, with R2 = 0.29 at the North site and R2 = 0.67 at the South site. The combination of vegetation height and TPI improved the prediction of snow height at the North site (R2 = 0.59) but not at the South site because vegetation height has little influence there. Vegetation was therefore the main factor determining snow height when it protruded above the snow. When it did not protrude, snow height was mostly determined by topography. Significance Statement Wind-induced snow drifting is a major snow redistribution process in the Arctic. Shrubs trap drifting snow, and drifting snow accumulates in hollows. Determining the respective roles of both these processes in snow accumulation is required to predict permafrost temperature and its emission of greenhouse gases, because thicker snow limits permafrost winter cooling. Using a UAV-borne lidar, we have determined snow height distribution over two contrasted sites in the Canadian low Arctic, with varied vegetation height and topography. When snow height exceeds vegetation height, topography is a good predictor of snow height, with negligible effect of buried vegetation. When vegetation protrudes above the snow, combining both topography and vegetation height is required for a good prediction of snow height. |
| Programme |
1042 |
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Edition |
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| ISSN |
1525-7541, 1525-755X |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8541 |
| Permanent link to this record |
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| Author |
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| Title |
A New Posthole Seismometer at Concordia Permanent Research Facility in the Heart of the Icy East Antarctic Plateau |
Type |
Journal |
| Year |
2023 |
Publication |
Seismological research letters |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
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| Keywords |
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| Abstract |
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| Programme |
133 |
| Campaign |
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Edition |
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| ISSN |
0895-0695 |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8663 |
| Permanent link to this record |
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| Author |
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| Title |
A Gull Species Recognizes MHC-II Diversity and Dissimilarity Using Odor Cues |
Type |
Book |
| Year |
2023 |
Publication |
Chemical signals in vertebrates |
Abbreviated Journal |
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| Volume |
15 |
Issue |
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Pages |
139-151 |
| Keywords |
Birds Black-legged kittiwake Intraspecific communication Major histocompatibility complex Olfaction Rissa tridactyla Sexual selection |
| Abstract |
The major histocompatibility complex (MHC) plays a crucial role in the resistance to parasites in vertebrates and is thus often suggested to be an important force driving social interactions, including mating preference. However, the phenotypic cues used by individuals to assess the MHC characteristics of conspecifics are generally unknown. Here, we used behavioral tests to investigate whether, in black-legged kittiwakes, females use odor cues to distinguish male MHC-II diversity and MHC-II dissimilarity. We found that females took less time to peck at an odor sample coming from a male with high or low MHC-II diversity compared to intermediate MHC-II diversity. However, this result is due to the single individual who has only one MHC-II allele. When excluding this individual, females took less time to peck at an odor sample coming from a male with high MHC-II diversity. In addition, when the odor sample came from a male with higher MHC-II dissimilarity, females took less time to peck at the sample, but once they pecked at it, they delayed the use of the sample. Altogether, our results add evidence for olfactory recognition of MHC characteristics in birds, but further studies are needed to determine whether kittiwakes use this ability to optimize fitness. |
| Programme |
1162 |
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ISBN |
978-3-031-35159-4 |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8723 |
| Permanent link to this record |
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| Author |
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| Title |
A keystone avian predator faces elevated energy expenditure in a warming Arctic |
Type |
Journal |
| Year |
2023 |
Publication |
Ecology |
Abbreviated Journal |
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| Volume |
104 |
Issue |
5 |
Pages |
e4034 |
| Keywords |
activity budgets climate change daily energy expenditure dovekie ecotoxicology mercury plasticity sea surface temperature |
| Abstract |
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| Programme |
388 |
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Edition |
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| ISSN |
1939-9170 |
ISBN |
1939-9170 |
Medium |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8617 |
| Permanent link to this record |
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| Author |
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| Title |
Keystone seabird may face thermoregulatory challenges in a warming Arctic |
Type |
Journal |
| Year |
2023 |
Publication |
Scientific Reports |
Abbreviated Journal |
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| Volume |
13 |
Issue |
1 |
Pages |
16733 |
| Keywords |
Climate-change ecology Ecophysiology |
| Abstract |
Climate change affects the Arctic more than any other region, resulting in evolving weather, vanishing sea ice and altered biochemical cycling, which may increase biotic exposure to chemical pollution. We tested thermoregulatory impacts of these changes on the most abundant Arctic seabird, the little auk (Alle alle). This small diving species uses sea ice-habitats for foraging on zooplankton and resting. We equipped eight little auks with 3D accelerometers to monitor behavior, and ingested temperature recorders to measure body temperature (Tb). We also recorded weather conditions, and collected blood to assess mercury (Hg) contamination. There were nonlinear relationships between time engaged in different behaviors and Tb. Tb increased on sea ice, following declines while foraging in polar waters, but changed little when birds were resting on water. Tb also increased when birds were flying, and decreased at the colony after being elevated during flight. Weather conditions, but not Hg contamination, also affected Tb. However, given our small sample size, further research regarding thermoregulatory effects of Hg is warranted. Results suggest that little auk Tb varies with behavior and weather conditions, and that loss of sea ice due to global warming may cause thermoregulatory and energic challenges during foraging trips at sea. |
| Programme |
388 |
| Campaign |
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Series Issue |
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Edition |
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| ISSN |
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ISBN |
2045-2322 |
Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8778 |
| Permanent link to this record |
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| Author |
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| Title |
Combined threats of climate change and contaminant exposure through the lens of bioenergetics |
Type |
Journal |
| Year |
2023 |
Publication |
Global Change Biology |
Abbreviated Journal |
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| Volume |
29 |
Issue |
18 |
Pages |
5139-5168 |
| Keywords |
bioenergetics chemical contaminants climate change energy balance interactive effects physiological acclimatization plasticity temperature |
| Abstract |
Organisms face energetic challenges of climate change in combination with suites of natural and anthropogenic stressors. In particular, chemical contaminant exposure has neurotoxic, endocrine-disrupting, and behavioral effects which may additively or interactively combine with challenges associated with climate change. We used a literature review across animal taxa and contaminant classes, but focused on Arctic endotherms and contaminants important in Arctic ecosystems, to demonstrate potential for interactive effects across five bioenergetic domains: (1) energy supply, (2) energy demand, (3) energy storage, (4) energy allocation tradeoffs, and (5) energy management strategies; and involving four climate change-sensitive environmental stressors: changes in resource availability, temperature, predation risk, and parasitism. Identified examples included relatively equal numbers of synergistic and antagonistic interactions. Synergies are often suggested to be particularly problematic, since they magnify biological effects. However, we emphasize that antagonistic effects on bioenergetic traits can be equally problematic, since they can reflect dampening of beneficial responses and result in negative synergistic effects on fitness. Our review also highlights that empirical demonstrations remain limited, especially in endotherms. Elucidating the nature of climate change-by-contaminant interactive effects on bioenergetic traits will build toward determining overall outcomes for energy balance and fitness. Progressing to determine critical species, life stages, and target areas in which transformative effects arise will aid in forecasting broad-scale bioenergetic outcomes under global change scenarios. |
| Programme |
388 |
| Campaign |
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| Address |
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Place of Publication |
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Series Issue |
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Edition |
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| ISSN |
1365-2486 |
ISBN |
1365-2486 |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8622 |
| Permanent link to this record |
