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Author |
Thiebot Jb, Pinaud D, |
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Title |
Quantitative method to estimate species habitat use from light-based geolocation data
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Journal Article |
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Year |
2010 |
Publication |
Endangered Species Research |
Abbreviated Journal |
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Volume |
10 |
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Pages |
341 -353 |
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Keywords |
habitat use, kalman filter, large scale movements, light based geolocation, method, permitted without written consent, publisher, resale republication not, sea surface temperature, state space model, |
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Abstract |
The development of biologging techniques has been instrumental in studying the behaviour of wild animals and interpreting it with respect to the bio-physical features of their habi- tat. Light-based geolocation currently appears to be the only technique suitable for the study of far- ranging small species, particularly marine species, over long periods, but it provides locations with low precision. In this study, we sought to improve the exploitation of these data. Specifically, the goals were to (1) correct rather than reject estimates, especially during equinox periods, (2) perform repro- ducible time-saving routine analyses, and (3) determine the spatial likelihood of the estimations to adapt inferences on habitat use by the population. We therefore applied an existing data-processing method based on spatial template fitting, using Markov Chain Monte Carlo and state-space model- ling (Kalman filter) improved by a facultative sea surface temperature-matching procedure and a land mask. The main functions used for geolocation are grouped under the R package TripEstima- tion, freely available online. We focused on a typical example of animal movement that at present can only be ethically obtained from light-based geolocation. The method made it possible to estimate realistic positions during equinox periods and to routinely process the 12 available datasets. We thus obtained the most probable location for each sunrise/sunset as well as the posterior distribution around each estimated location, allowing an intuitive habitat use investigation at a scale of 100 km. This paper describes the method used and provides the complete and comprehensively annotated commands required for its use.
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109 |
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1613-4796 |
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yes |
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418 |
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Author |
Ropert-Coudert Y, Beaulieu M, Hanuise N, Kato A, |
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Title |
Diving into the world of biologging
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Type |
Journal Article |
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Year |
2009 |
Publication |
Endang Species Res |
Abbreviated Journal |
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Volume |
10 |
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Pages |
21 -27 |
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Abstract |
On the occasion of the publication of the proceedings of the Third International Biologging Science Symposium, we present a summary of the incidence of biologging in studies of animal behaviour. Studies investigating diving activity were used as a proxy to examine the use of a biologging technology. Specifically, studies referenced in the Penguiness Book, an internet-based diving database, were used to examine: (1) on which taxa of diving animals biologging is principally used; (2) which countries are the principal users and producers of biologging technology; and (3) the incidence of this approach in peer-reviewed publications. Each of these items is discussed in the light of the intrinsic limitations of biologging approaches. |
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137 |
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1613-4796 |
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yes |
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1847 |
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Author |
Laetitia Dadaglio, Julie Dinasquet, Ingrid Obernosterer, Fabien Joux |
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Title |
Differential responses of bacteria to diatom-derived dissolved organic matter in the Arctic Ocean |
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Journal |
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Year |
2018 |
Publication |
Aquatic microbial ecology |
Abbreviated Journal |
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Volume |
82 |
Issue |
1 |
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59-72 |
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Keywords |
16S rRNA sequencing Arctic Ocean Bacterial diversity Bacterial growth Biodegradation Diatom-derived organic matter Sea ice |
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Abstract |
The Arctic sea ice cover is undergoing an unprecedented decline due to climate change. This loss may result in the earlier start of ice algae blooms and more intense phytoplankton blooms, leading to higher concentrations of dissolved organic matter (DOM) derived from primary production. We investigated the response of early summer Arctic bacterial communities to the addition of Arctic diatom-derived DOM through biodegradation experiments in Baffin Bay. DOM produced by the planktonic diatom Chaetoceros neogracilis and the sea ice diatom Fragilariopsis cylindrus was added to seawater from 3 stations with different ice cover (2 ice zones and 1 open water zone) for 12 d. At the 3 stations, the addition of inorganic nutrients (PO4 and NO3) was not sufficient to stimulate bacterial growth compared to the controls, suggesting that bacteria were mainly limited by organic carbon. The addition of DOM from C. neogracilis stimulated bacterial abundance and production, with a more pronounced response in the ice zone compared to the open water zone. The enhanced bacterial metabolism was accompanied by changes in the bacterial community composition determined by 16S rRNA sequencing, driven by operational taxonomic units (OTUs) related to Pseudoalteromonas and Polaribacter that increased in relative abundance with DOM addition. Moreover, in the ice zone, DOM from C. neogracilis induced a priming effect on the bacterial utilization of ambient DOM. Our findings suggest that phytoplankton blooms, through the production of labile organic matter, will strongly affect bacterial heterotrophic activity, composition and dissolved organic carbon cycling in the Arctic Ocean. |
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1164 |
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ISSN |
0948-3055, 1616-1564 |
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yes |
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8120 |
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Author |
Jinwen Liu, Markus G. Weinbauer, Cornelia Maier, Minhan Dai, Jean-Pierre Gattuso |
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Title |
Effect of ocean acidification on microbial diversity and on microbe-driven biogeochemistry and ecosystem functioning |
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Journal |
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Year |
2010 |
Publication |
Aquatic Microbial Ecology |
Abbreviated Journal |
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Volume |
61 |
Issue |
3 |
Pages |
291-305 |
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Abstract |
The ocean absorbs about 25% of anthropogenic CO2 emissions, which alters its chemistry. Among the changes of the carbonate system are an increase in the partial pressure of CO2 (pCO2) and a decline of pH; hence, the whole process is often referred to as 'ocean acidification'. Many microbial processes can be affected either directly or indirectly via a cascade of effects through the response of non-microbial groups and/or through changes in seawater chemistry. We briefly review the current understanding of the impact of ocean acidification on microbial diversity and processes, and highlight the gaps that need to be addressed in future research. The focus is on Bacteria, Archaea, viruses and protistan grazers but also includes total primary production of phytoplankton as well as species composition of eukaryotic phytoplankton. Some species and communities exhibit increased primary production at elevated pCO2. In contrast to their heterocystous counterparts, nitrogen fixation by non-heterocystous cyanobacteria is stimulated by elevated pCO2. The experimental data on the response of prokaryotic production to ocean acidification are not consistent. Very few other microbial processes have been investigated at environmentally relevant pH levels. The potential for microbes to adapt to ocean acidification, at either the species level by genetic change or at the community level through the replacement of sensitive species or groups by non- or less sensitive ones, is completely unknown. Consequently, the impact of ocean acidification on keystone species and microbial diversity needs to be elucidated. Most experiments used a short-term perturbation approach by using cultured organisms; few were conducted in mesocosms and none in situ. There is likely a lot to be learned from observations in areas naturally enriched with CO2, such as vents, upwelling and near-shore areas. |
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1008 |
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0948-3055, 1616-1564 |
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yes |
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6410 |
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Title |
First pre-modern record of the gyrfalcon (Falco rusticolus) in north-east Greenland |
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Journal |
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Year |
2019 |
Publication |
Polar Research |
Abbreviated Journal |
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Volume |
38 |
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Keywords |
Arctic Arctic Circle Arctic ecology cave climate change geochronology |
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1036 |
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1751-8369 |
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yes |
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8363 |
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Author |
Katrine Husum, John A. Howe, Agnes Baltzer, Matthias Forwick, Maria Jensen, Patrycja Jernas, Sergei Korsun, Arto Miettinen, Rahul Mohan, Caterina Morigi, Per Inge Myhre, Maarten A. Prins, Kari Skirbekk, Beata Sternal, Michel Boos, Noortje Dijkstra, Simon Troelstra |
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Title |
The marine sedimentary environments of Kongsfjorden, Svalbard: an archive of polar environmental change |
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Journal |
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Year |
2019 |
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Polar Research |
Abbreviated Journal |
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Keywords |
climate deglaciation environment fjord geology sediments |
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1223 |
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1751-8369 |
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yes |
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7618 |
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Author |
L. Lescarmontier, B. Legresy, N. W. Young, R. Coleman, L. Testut, C. Mayet, P. Lacroix |
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Title |
Rifting processes and ice-flow modulation observed on Mertz Glacier, East Antarctica |
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Journal |
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Year |
2015 |
Publication |
Journal of Glaciology |
Abbreviated Journal |
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Volume |
61 |
Issue |
230 |
Pages |
1183-1193 |
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Keywords |
Antarctic glaciology calving crevasses glacier flow glacier mechanics |
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688 |
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0022-1430, 1727-5652 |
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0022-1430, 1727-5652 |
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7066 |
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Duncan A. Young, Laura E. Lindzey, Donald D. Blankenship, Jamin S. Greenbaum, Alvaro Garcia De Gorordo, Scott D. Kempf, Jason L. Roberts, Roland C. Warner, Tas Van Ommen, Martin J. Siegert, Emmanuel Le Meur |
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Title |
Land-ice elevation changes from photon-counting swath altimetry: first applications over the Antarctic ice sheet |
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2015 |
Publication |
Journal of Glaciology |
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61 |
Issue |
225 |
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17-28 |
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Keywords |
Antarctic glaciology aerogeophysical measurements glacier mapping glaciological instruments and methods ice-sheet mass balance |
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1053 |
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0022-1430, 1727-5652 |
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0022-1430, 1727-5652 |
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6794 |
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Author |
Triest J, Alemany O, |
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Title |
Drill fluid selection for the SUBGLACIOR probe: a review of silicone oil as a drill fluid
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Type |
Journal Article |
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Year |
2014 |
Publication |
Annals of Glaciology |
Abbreviated Journal |
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Volume |
55 |
Issue |
68 |
Pages |
311-321 |
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1119 |
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International Glaciological Society |
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02603055 |
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yes |
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5945 |
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Alemany O, Chappellaz J, Triest J, Calzas M, Cattani O, Chemin JF, Desbois Q, Desbois T, Duphil R, Falourd S, Grilli R, Guillerme C, Kerstel E, Laurent B, Lefebvre E, Marrocco N, Pascual O, Piard L, Possenti P, Romanini D, Thiebaut V, Yamani R, |
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Title |
The SUBGLACIOR drilling probe: concept and design
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Type |
Journal Article |
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Year |
2014 |
Publication |
Annals of Glaciology |
Abbreviated Journal |
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Volume |
55 |
Issue |
68 |
Pages |
233-242 |
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1119 |
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International Glaciological Society |
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0260-3055 |
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5931 |
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