| Records |
| Author |
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| Title |
Food source diversity, trophic plasticity, and omnivory enhance the stability of a shallow benthic food web from a high-Arctic fjord exposed to freshwater inputs |
Type |
Journal |
| Year |
2021 |
Publication |
Limnology and Oceanography |
Abbreviated Journal |
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| Volume |
66 |
Issue |
S1 |
Pages |
S259-S272 |
| Keywords |
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Abstract  |
Under climate change, many Arctic coastal ecosystems receive increasing amounts of freshwater, with ecological consequences that remain poorly understood. In this study, we investigated how freshwater inputs may affect the small-scale structure of benthic food webs in a low-production high-Arctic fjord (Young Sound, NE Greenland). We seasonally sampled benthic invertebrates from two stations receiving contrasting freshwater inputs: an inner station exposed to turbid and nutrient-depleted freshwater flows and an outer station exposed to lower terrestrial influences. Benthic food web structure was described using a stable isotope approach (?13C and ?15N), Bayesian models, and community-wide metrics. The results revealed the spatially and temporally homogeneous structure of the benthic food web, characterized by high trophic diversity (i.e., a wide community isotopic niche). Such temporal stability and spatial homogeneity mirrors the high degree of trophic plasticity and omnivory of benthic consumers that allows the maintenance of several carbon pathways through the food web despite different food availability. Furthermore, potential large inputs of shelf organic matter together with local benthic primary production (i.e., macroalgae and presumably microphytobenthos) may considerably increase the stability of the benthic food web by providing alternative food sources to locally runoff-impacted pelagic primary production. Future studies should assess beyond which threshold limit a larger increase in freshwater inputs might cancel out these stability factors and lead to marked changes in Arctic benthic ecosystems. |
| Programme |
1158 |
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| Address |
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| Series Editor |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
1939-5590 |
ISBN |
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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 |
6791 |
| Permanent link to this record |
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| Author |
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| Title |
Year-round distribution of Northeast Atlantic seabird populations: applications for population management and marine spatial planning |
Type |
Journal |
| Year |
2021 |
Publication |
Marine Ecology Progress Series |
Abbreviated Journal |
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| Volume |
676 |
Issue |
|
Pages |
255-276 |
| Keywords |
Alle alle Fratercula arctica Fulmarus glacialis Marine spatial planning Rissa tridactyla SEATRACK Uria aalge Uria lomvia |
| Abstract |
Tracking data of marine predators are increasingly used in marine spatial management. We developed a spatial data set with estimates of the monthly distribution of 6 pelagic seabird species breeding in the Northeast Atlantic. The data set was based on year-round global location sensor (GLS) tracking data of 2356 adult seabirds from 2006-2019 from a network of seabird colonies, data describing the physical environment and data on seabird population sizes. Tracking and environmental data were combined in monthly species distribution models (SDMs). Cross-validations were used to assess the transferability of models between years and breeding locations. The analyses showed that birds from colonies close to each other (<500 km apart) used the same nonbreeding habitats, while birds from distant colonies (>1000 km) used colony-specific and, in many cases, non-overlapping habitats. Based on these results, the SDM from the nearest model colony was used to predict the distribution of all seabird colonies lying within a species-specific cut-off distance (400-500 km). Uncertainties in the predictions were estimated by cluster bootstrap sampling. The resulting data set consisted of 4692 map layers, each layer predicting the densities of birds from a given species, colony and month across the North Atlantic. This data set represents the annual distribution of 23.5 million adult pelagic seabirds, or 87% of the Northeast Atlantic breeding population of the study species. We show how the data set can be used in population and spatial management applications, including the detection of population-specific nonbreeding habitats and identifying populations influenced by marine protected areas. |
| Programme |
330 |
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Edition |
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| ISSN |
0171-8630, 1616-1599 |
ISBN |
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Medium |
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Expedition |
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Conference |
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Approved |
yes |
| Call Number |
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Serial |
8425 |
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| Author |
F. Thibon, L. Weppe, N. Vigier, C. Churlaud, T. Lacoue-Labarthe, M. Metian, Y. Cherel, P. Bustamante |
| Title |
Large-scale survey of lithium concentrations in marine organisms |
Type |
Journal |
| Year |
2021 |
Publication |
Science of The Total Environment |
Abbreviated Journal |
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| Volume |
751 |
Issue |
|
Pages |
141453 |
| Keywords |
Bio-reduction Bioaccumulation Biogeography Ecotoxicology Multiple correspondence analyses Trophic webs |
| Abstract |
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| Programme |
109 |
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Series Issue |
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Edition |
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| ISSN |
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ISBN |
0048-9697 |
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 |
7944 |
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| Author |
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| Title |
Precise Transit and Radial-velocity Characterization of a Resonant Pair: The Warm Jupiter TOI-216c and Eccentric Warm Neptune TOI-216b |
Type |
Journal |
| Year |
2021 |
Publication |
The Astronomical Journal |
Abbreviated Journal |
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| Volume |
161 |
Issue |
4 |
Pages |
161 |
| Keywords |
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| Abstract |
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| Programme |
1066 |
| Campaign |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
1538-3881 |
ISBN |
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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 |
8194 |
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| Author |
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| Title |
Theoretical and Experimental Analysis for Cleaning Ice Cores from EstisolTM 140 Drill Liquid |
Type |
Journal |
| Year |
2021 |
Publication |
Applied Sciences |
Abbreviated Journal |
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| Volume |
11 |
Issue |
9 |
Pages |
3830 |
| Keywords |
Beyond EPICA drilling Estisol ice cores |
| Abstract |
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| Programme |
1202 |
| Campaign |
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Medium |
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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 |
8247 |
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| Author |
A. Barbero, J. Savarino, R. Grilli, C. Blouzon, G. Picard, M. M. Frey, Y. Huang, N. Caillon |
| Title |
New Estimation of the NOx Snow-Source on the Antarctic Plateau |
Type |
Journal |
| Year |
2021 |
Publication |
Journal of Geophysical Research: Atmospheres |
Abbreviated Journal |
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| Volume |
126 |
Issue |
20 |
Pages |
e2021JD035062 |
| Keywords |
Antarctic Plateau flux chamber nitrate photolysis snowpack emissions |
| Abstract |
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| Programme |
1177 |
| Campaign |
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| Address |
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| Corporate Author |
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Thesis |
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Place of Publication |
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Editor |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
2169-8996 |
ISBN |
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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 |
8393 |
| Permanent link to this record |
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| Author |
Anzhou Cao, Zheng Guo, Xiaoyu Qi, Peiliang Li, Hailun He |
| Title |
Seasonal and nodal variations of predominant tidal constituents in the global ocean |
Type |
Journal |
| Year |
2021 |
Publication |
Continental Shelf Research |
Abbreviated Journal |
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| Volume |
217 |
Issue |
|
Pages |
104372 |
| Keywords |
Fitting Modified two-step harmonic analysis Nodal modulation Seasonal variation Tide gauge Tides |
| Abstract |
Tides are one of the basic types of ocean water motions. Previous studies have reported that the M2 constituent exhibits seasonal variations (annual cycles) in some regions. However, based on the newly proposed method of modified two-step harmonic analysis (HA) and its application at 240 global tide gauges, we find that the M2 constituent as well as the S2 and K1 do not have significant seasonal variations at these tide gauges. The seasonal variations of the M2 constituent reported in previous studies are caused by its satellites, the H1 and H2 constituents, which are not resolved in these studies due to the short time window (one month or three months) used in HA. Because the frequency of the H1 (H2) constituent is equal to that of the M2 minus (plus) the frequency of annual cycles, the superposition of the M2, H1 and H2 constituents with constant amplitudes is equivalent to the M2 constituent with seasonally varying amplitudes. Compared with the new method, some adaptations to traditional HA aiming to capture variations in amplitudes and phase lags of constituents have some limitations, because they either neglect some satellites of the major constitutes or introduce spurious fluctuations resulting from an unreasonably large number of independent points. The nodal modulations of predominant constituents are also explored in this study. On the global scale, the nodal modulations of the M2, K1 and O1 constituents agree with the theoretical predictions, except a cold spot region with reduced nodal modulation in the Gulf of Maine and a hot spot region with enhanced nodal modulation in the South China Sea for the M2. Nodal modulation is also found for the S2 constituent (in theory, the S2 has no nodal modulation), which is 0.8% averaged at 164 tide gauges where the S2 is not too weak. |
| Programme |
688 |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
0278-4343 |
ISBN |
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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 |
8032 |
| Permanent link to this record |
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| Author |
Paul Tixier, Nicolas Gasco, Jared R. Towers, Christophe Guinet |
| Title |
Killer whales of the Crozet Archipelago and adjacent waters: photo-identification catalogue, population status and distribution in 2020 |
Type |
Report |
| Year |
2021 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
1-167 |
| Keywords |
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| Abstract |
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| Programme |
109 |
| Campaign |
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ISBN |
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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 |
8380 |
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| Author |
R. Olmi, M. Bittelli, G. Picard, L. Arnaud, A. Mialon, S. Priori |
| Title |
Investigating the influence of the grain size and distribution on the macroscopic dielectric properties of Antarctic firn |
Type |
Journal |
| Year |
2021 |
Publication |
Cold Regions Science and Technology |
Abbreviated Journal |
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| Volume |
185 |
Issue |
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Pages |
103254 |
| Keywords |
Antarctica Close?off Dielectric measurements Dielectric model Firn Full wave EM simulations Ice cores |
| Abstract |
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| Programme |
1110 |
| Campaign |
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| Address |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0165-232X |
ISBN |
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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 |
7995 |
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| Author |
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| Title |
An estimation of the quantitative impacts of copepod grazing on an under sea-ice spring phytoplankton bloom in western Baffin Bay, Canadian Arctic |
Type |
Journal |
| Year |
2021 |
Publication |
Elementa: Science of the Anthropocene |
Abbreviated Journal |
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| Volume |
9 |
Issue |
1 |
Pages |
00092 |
| Keywords |
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| Abstract |
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| Programme |
1164 |
| Campaign |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
2325-1026 |
ISBN |
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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 |
8255 |
| Permanent link to this record |
