|
Records |
Links |
|
Author |
|
![find record details (via OpenURL) openurl](img/xref.gif)
|
|
Title |
Multicolony tracking reveals the winter distribution of a pelagic seabird on an ocean basin scale
|
Type |
Journal Article |
|
Year |
2012 |
Publication |
Diversity and Distributions |
Abbreviated Journal |
1366-9516 |
|
|
Volume |
18 |
Issue ![sorted by Issue field, descending order (down)](img/sort_desc.gif) |
6 |
Pages |
530-542 |
|
|
Keywords |
Black-legged kittiwake, geolocation, migration, non-breeding ecology, North Atlantic, Rissa tridactyla, |
|
|
Abstract |
Aim An understanding of the non-breeding distribution and ecology of migratory species is necessary for successful conservation. Many seabirds spend the non-breeding season far from land, and information on their distribution during this time is very limited. The black-legged kittiwake, Rissa tridactyla, is a widespread and numerous seabird in the North Atlantic and Pacific, but breeding populations throughout the Atlantic range have declined recently. To help understand the reasons for the declines, we tracked adults from colonies throughout the Atlantic range over the non-breeding season using light-based geolocation. Location North Atlantic. Methods Geolocation data loggers were deployed on breeding kittiwakes from 19 colonies in 2008 and 2009 and retrieved in 2009 and 2010. Data from 236 loggers were processed and plotted using GIS. Size and composition of wintering populations were estimated using information on breeding population size. Results Most tracked birds spent the winter in the West Atlantic, between Newfoundland and the Mid-Atlantic Ridge, including in offshore, deep-water areas. Some birds (mainly local breeders) wintered in the North Sea and west of the British Isles. There was a large overlap in winter distributions of birds from different colonies, and colonies closer to each other showed larger overlap. We estimated that 80% of the 4.5 million adult kittiwakes in the Atlantic wintered west of the Mid-Atlantic Ridge, with only birds from Ireland and western Britain staying mainly on the European side. Main conclusions The high degree of mixing in winter of kittiwakes breeding in various parts of the Atlantic range implies that the overall population could be sensitive to potentially deteriorating environmental conditions in the West Atlantic, e.g. owing to lack of food or pollution. Our approach to estimating the size and composition of wintering populations should contribute to improved management of birds faced with such challenges.
|
|
|
Programme |
330 |
|
|
Campaign |
|
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
Blackwell Publishing Ltd |
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
1472-4642 |
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
|
Approved |
yes |
|
|
Call Number |
|
Serial |
2700 |
|
Permanent link to this record |
|
|
|
|
Author |
|
![goto web page (via DOI) doi](img/doi.gif)
|
|
Title |
Vultures of the Seas: Hyperacidic Stomachs in Wandering Albatrosses as an Adaptation to Dispersed Food Resources, including Fishery Wastes
|
Type |
Journal Article |
|
Year |
2012 |
Publication |
PLoS ONE |
Abbreviated Journal |
|
|
|
Volume |
7 |
Issue ![sorted by Issue field, descending order (down)](img/sort_desc.gif) |
6 |
Pages |
e37834- |
|
|
Keywords |
|
|
|
Abstract |
|
|
|
Programme |
109 |
|
|
Campaign |
|
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
Bachelor's thesis |
|
|
Publisher |
Public Library of Science |
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
1932-6203 |
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
|
Approved |
yes |
|
|
Call Number |
|
Serial |
3882 |
|
Permanent link to this record |
|
|
|
|
Author |
|
![find record details (via OpenURL) openurl](img/xref.gif)
|
|
Title |
Seabird Modulations of Isotopic Nitrogen on Islands
|
Type |
Journal Article |
|
Year |
2012 |
Publication |
PLoS ONE |
Abbreviated Journal |
|
|
|
Volume |
7 |
Issue ![sorted by Issue field, descending order (down)](img/sort_desc.gif) |
6 |
Pages |
e39125- |
|
|
Keywords |
|
|
|
Abstract |
The transport of nutrients by migratory animals across ecosystem boundaries can significantly enrich recipient food webs, thereby shaping the ecosystems structure and function. To illustrate the potential role of islands in enabling the transfer of matter across ecosystem boundaries to be gauged, we investigated the influence of seabirds on nitrogen input on islands. Basing our study on four widely differing islands in terms of their biogeography and ecological characteristics, sampled at different spatial and temporal intervals, we analyzed the nitrogen isotopic values of the main terrestrial ecosystem compartments (vascular plants, arthropods, lizards and rodents) and their relationship to seabird values. For each island, the isotopic values of the ecosystem were driven by those of seabirds, which ultimately corresponded to changes in their marine prey. First, terrestrial compartments sampled within seabird colonies were the most enriched in 15N compared with those collected at various distances outside colonies. Second, isotopic values of the whole terrestrial ecosystems changed over time, reflecting the values of seabirds and their prey, showing a fast turnover throughout the ecosystems. Our results demonstrate that seabird-derived nutrients not only spread across the terrestrial ecosystems and trophic webs, but also modulate their isotopic values locally and temporally on these islands. The wealth of experimental possibilities in insular ecosystems justifies greater use of these model systems to further our understanding of the modalities of trans-boundary nutrient transfers.
|
|
|
Programme |
136 |
|
|
Campaign |
|
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
Public Library of Science |
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
1932-6203 |
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
|
Approved |
yes |
|
|
Call Number |
|
Serial |
4020 |
|
Permanent link to this record |
|
|
|
|
Author |
Greenslade Penelope, Vernon P, Smith D, |
![find record details (via OpenURL) openurl](img/xref.gif)
|
|
Title |
Ecology of Heard Island Diptera
|
Type |
Journal Article |
|
Year |
2012 |
Publication |
POLAR BIOLOGY |
Abbreviated Journal |
|
|
|
Volume |
35 |
Issue ![sorted by Issue field, descending order (down)](img/sort_desc.gif) |
6 |
Pages |
841-850- |
|
|
Keywords |
Anatalanta aptera, Calycopteryx moseleyi, Amalopteryx maritima, Fluctuating asymmetry, Climate change, Invasive species, |
|
|
Abstract |
|
|
|
Programme |
136 |
|
|
Campaign |
|
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
Springer-Verlag |
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
0722-4060 |
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
|
Approved |
yes |
|
|
Call Number |
|
Serial |
4107 |
|
Permanent link to this record |
|
|
|
|
Author |
|
![goto web page (via DOI) doi](img/doi.gif)
|
|
Title |
Coping with social stress: heart rate responses to agonistic interactions in king penguins
|
Type |
Journal Article |
|
Year |
2012 |
Publication |
Behavioral Ecology |
Abbreviated Journal |
|
|
|
Volume |
23 |
Issue ![sorted by Issue field, descending order (down)](img/sort_desc.gif) |
6 |
Pages |
1178 -1185 |
|
|
Keywords |
|
|
|
Abstract |
In colonial breeders, agonistic interactions between conspecifics are frequent and may have significant physiological implications. Physiological responses (e.g., increased heart rate) to such social stressors may be determined by the potential costs of agonistic interactions, such as personal injury or risk of breeding failure, and by the motivation of the individuals concerned. The latter may vary according to individuals reproductive status or willingness to engage in agonistic interactions. In this study, we investigated heart rate responses to aggressive interactions in a breeding colony of king penguins Aptenodytes patagonicus. From heart rate (HR) and behavior recorded in 20 adults at various stages of the breeding season, we investigated how king penguins reacted to aggressive neighbors. A total of 589 agonistic interactions, 223 in which birds were actors and 366 in which birds remained bystanders (i.e., witnesses that were not involved in interactions), were characterized. We found that HR increased during agonistic interactions, both in actors and bystanders. The intensity (threat displays or physical attacks), duration, and rate of aggressive events (number of threats/blows per unit time) of an interaction significantly influenced the HR response in actors. For bystanders, however, only the duration of interactions seemed to matter. Our results also suggest a role for individual motivation, as initiators of agonistic interactions displayed higher HR increases than responders, and as increases were not constant throughout the reproductive season. We conclude that individual risk assessment and motivation modulate physiological responses to social stressors in group-living animals.
|
|
|
Programme |
119 |
|
|
Campaign |
|
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
Bachelor's thesis |
|
|
Publisher |
|
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
1045-2249 |
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
|
Approved |
yes |
|
|
Call Number |
|
Serial |
4174 |
|
Permanent link to this record |
|
|
|
|
Author |
|
![find record details (via OpenURL) openurl](img/xref.gif)
|
|
Title |
Myzus ascalonicus, an Aphid Recently Introduced to Sub-Antarctic Islands, Prefers Native to Exotic Host-Plants
|
Type |
Journal Article |
|
Year |
2012 |
Publication |
ENVIRONMENTAL ENTOMOLOGY |
Abbreviated Journal |
|
|
|
Volume |
41 |
Issue ![sorted by Issue field, descending order (down)](img/sort_desc.gif) |
6 |
Pages |
1398-1404 |
|
|
Keywords |
|
|
|
Abstract |
|
|
|
Programme |
136 |
|
|
Campaign |
|
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
Bachelor's thesis |
|
|
Publisher |
|
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
0046-225X |
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
|
Approved |
yes |
|
|
Call Number |
|
Serial |
4264 |
|
Permanent link to this record |
|
|
|
|
Author |
Mesa Mario La, Catalano Barbara, Koubbi Philippe, Jones Christopher D, |
![goto web page (via DOI) doi](img/doi.gif)
|
|
Title |
Early ontogeny of the mackerel icefish, Champsocephalus gunnari, in the southern Scotia Arc
|
Type |
Journal Article |
|
Year |
2013 |
Publication |
POLAR BIOLOGY |
Abbreviated Journal |
0722-4060 |
|
|
Volume |
36 |
Issue ![sorted by Issue field, descending order (down)](img/sort_desc.gif) |
6 |
Pages |
797-805 |
|
|
Keywords |
Age and growth, Bransfield strait, Channichthyid, Ecology, Microbiology, Oceanography, Plant Sciences, Southern Ocean, Yolk-sac larvae, Zoology, |
|
|
Abstract |
Paper linked to the AMLR programme |
|
|
Programme |
1142 |
|
|
Campaign |
|
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
Bachelor's thesis |
|
|
Publisher |
|
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
0722-4060 |
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
|
Approved |
yes |
|
|
Call Number |
|
Serial |
4318 |
|
Permanent link to this record |
|
|
|
|
Author |
|
![find record details (via OpenURL) openurl](img/xref.gif)
|
|
Title |
Distribution of Barley yellow dwarf virus-PAV in the Sub-Antarctic Kerguelen Islands and Characterization of Two New Luteovirus Species
|
Type |
Journal Article |
|
Year |
2013 |
Publication |
PLOS ONE |
Abbreviated Journal |
|
|
|
Volume |
8 |
Issue ![sorted by Issue field, descending order (down)](img/sort_desc.gif) |
6 |
Pages |
|
|
|
Keywords |
|
|
|
Abstract |
A systematic search for viral infection was performed in the isolated Kerguelen Islands, using a range of polyvalent genus-specific PCR assays. Barley yellow dwarf virus (BYDV) was detected in both introduced and native grasses such as Poa cookii. The geographical distribution of BYDV and its prevalence in P. cookii were analyzed using samples collected from various sites of the archipelago. We estimate the average prevalence of BYDV to be 24.9% in P. cookii, with significant variability between sites. BYDV genetic diversity was assessed using sequence information from two genomic regions: the P3 open reading frame (ORF) (encoding the coat protein) and the hypervariable P6 ORF region. The phylogenetic analysis in the P3 region showed that BYDV sequences segregate into three major lineages, the most frequent of which (Ker-I cluster) showed close homology with BYDV-PAV-I isolates and had very low intra-lineage diversity (0.6%). A similarly low diversity was also recorded in the hypervariable P6 region, suggesting that Ker-I isolates derive from the recent introduction of BYDV-PAV-I. Divergence time estimation suggests that BYDV-PAV-I was likely introduced in the Kerguelen environment at the same time frame as its aphid vector, Rhopalosiphum padi, whose distribution shows good overlap with that of BYDV-Ker-I. The two other lineages show more than 22% amino acid divergence in the P3 region with other known species in the BYDV species complex, indicating that they represent distinct BYDV species. Using species-specific amplification primers, the distribution of these novel species was analyzed. The high prevalence of BYDV on native Poaceae and the presence of the vector R. padi, raises the question of its impact on the vulnerable plant communities of this remote ecosystem. |
|
|
Programme |
136 |
|
|
Campaign |
|
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
|
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
1932-6203 |
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
|
Approved |
yes |
|
|
Call Number |
|
Serial |
4388 |
|
Permanent link to this record |
|
|
|
|
Author |
|
![find record details (via OpenURL) openurl](img/xref.gif)
|
|
Title |
On the iron isotope heterogeneity of lithospheric mantle xenoliths: implications for mantle metasomatism, the origin of basalts and the iron isotope composition of the Earth
|
Type |
Journal Article |
|
Year |
2013 |
Publication |
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY |
Abbreviated Journal |
|
|
|
Volume |
165 |
Issue ![sorted by Issue field, descending order (down)](img/sort_desc.gif) |
6 |
Pages |
1243-1258 |
|
|
Keywords |
Geology, Iron isotopes, Mantle peridotites, Melt extraction, Metasomatism, Mineralogy, Mineral Resources, |
|
|
Abstract |
|
|
|
Programme |
1077 |
|
|
Campaign |
|
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
Bachelor's thesis |
|
|
Publisher |
|
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
0010-7999 |
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
|
Approved |
yes |
|
|
Call Number |
|
Serial |
4445 |
|
Permanent link to this record |
|
|
|
|
Author |
|
![find record details (via OpenURL) openurl](img/xref.gif)
|
|
Title |
Life history traits and functional immune parameters in the wild trout of the Kerguelen Islands |
Type |
Journal Article |
|
Year |
2013 |
Publication |
FISH & SHELLFISH IMMUNOLOGY |
Abbreviated Journal |
Fish Shellfish Immunol. |
|
|
Volume |
34 |
Issue ![sorted by Issue field, descending order (down)](img/sort_desc.gif) |
6 |
Pages |
1650 |
|
|
Keywords |
|
|
|
Abstract |
Common trouts (Salmo trutta L.) over 3 years old, were sampled in hydrosystems of Kerguelen Islands in 2010. Biometric and biogeographical data of caught fish were collected in the field. Ages and migratory status of individuals were determined by scale reading and validated by otolithometry and otolith microchemistry (LA-ICPMS). Prey types ingested by trout were determined by analysis of stomach contents. Molecules organochlorine pesticides (OCPs) and PCBs accumulated in the liver and muscle tissues of fish were analyzed by GC-ECD. The immunomarkers were measured directly in the field by appropriate protocols in flow cytometry.
Five groups of trouts associated with distinct ecological niches, were defined by the nature of ingested preys. Groups 1 and 3 fed from only benthic invertebrates, group 2 from terrestrial origin preys (insects or arthropods drained by runoff waters), group 4 from pelagic invertebrates (insect larvae) and the group 5 fed exclusively from marine organisms.
High significant variations in oxidative burst of blood and pronephros leukocytes were observed between groups. It was particularly true for trouts whose diet consisted in benthic or terrestrial preys which had the highest levels in leukocyte oxidative burst. In addition, a negative influence of hepatic contamination by DDT, HCB and PCB was observed on oxidative burst of pronephrotic leukocytes. The basal level of apoptosis in pronephrotic leukocytes was strongly correlated with muscle bioaccumulation of OCPs, PCBs and PBDEs. Levels of induced apoptosis were particularly high in the blood or in the pronephros of trouts predating preferentially pelagic organisms. This factor was positively correlated with the levels of hepatic OCP, such as DDT. Chronic contamination of trout was also associated with low blood phagocytic activity in migratory trout feeding exclusively marine organisms.
In the natural environment, the ecological niche occupied by the fish influence their chemical contamination and plays a major role in the expression levels of immune cell functionality. |
|
|
Programme |
409 |
|
|
Campaign |
|
|
|
Address |
|
|
|
Corporate Author |
|
Thesis |
|
|
|
Publisher |
|
Place of Publication |
|
Editor |
|
|
|
Language |
|
Summary Language |
|
Original Title |
|
|
|
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
|
Series Volume |
|
Series Issue |
|
Edition |
|
|
|
ISSN |
1050-4648 |
ISBN |
|
Medium |
|
|
|
Area |
|
Expedition |
|
Conference |
|
|
|
Notes |
|
Approved |
yes |
|
|
Call Number |
|
Serial |
4462 |
|
Permanent link to this record |