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Author  |
Aubin T. & Jouventin P. |
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Title |
Cocktail-party effect in King penguin colonies. |
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Journal Article |
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Year |
1998 |
Publication |
Proceedings of the royal society b-biological sciences |
Abbreviated Journal |
Proc. Biol. Sci. |
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Volume |
265 |
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Pages |
1665-1673 |
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109 |
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ISSN |
0962-8452 |
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Approved |
yes |
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Serial |
865 |
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Author |
Aubin T. & Jouventin P. |
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Title |
Localisation of an acoustic signal in a noisy environment: the display call of the king penguin Aptenodytes patagonicus. |
Type |
Journal Article |
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Year |
2002 |
Publication |
Journal of experimental biology |
Abbreviated Journal |
J. Exp. Biol. |
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Volume |
205 |
Issue |
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Pages |
3793-3798 |
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354 |
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ISSN |
0022-0949 |
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Approved |
yes |
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Serial |
2386 |
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Author |
Aubin T., Jouventin P. & Hildebrand C. |
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Title |
Penguins use the two-voice system to recognize each other. |
Type |
Journal Article |
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Year |
2000 |
Publication |
Proceedings of the royal society b-biological sciences |
Abbreviated Journal |
Proc. Biol. Sci. |
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Volume |
267 |
Issue |
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Pages |
1081-1087 |
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Programme |
109 |
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0962-8452 |
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Approved |
yes |
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Serial |
1215 |
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Author |
Aubin, T., Mathevon, N., Staszewski, V. & Boulinier, T. |
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Title |
Acoustic communication in the Kittiwake Rissa tridactyla: potential cues for sexual and individual signatures in long calls. |
Type |
Journal Article |
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Year |
2007 |
Publication |
Polar biology |
Abbreviated Journal |
Polar Biol. |
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Volume |
30 |
Issue |
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Pages |
1027-1033 |
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333 |
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Edition |
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ISSN |
0722-4060 |
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Approved |
yes |
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Call Number |
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Serial |
4638 |
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Author |
AUBOURG, C. & GEOFFROY, L. |
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Title |
Magnetic fabric and inferred flow direction of dikes, cone-sheets and sill swarms |
Type |
Journal Article |
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Year |
2003 |
Publication |
Journal of volcanology and geothermal research |
Abbreviated Journal |
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Volume |
2553 |
Issue |
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Pages |
1-2 |
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Programme |
290 |
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Edition |
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ISSN |
0377-0273 |
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Approved |
yes |
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Call Number |
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Serial |
4155 |
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Author |
Aubry L. |
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Title |
Modélisation haute-résolution de la dynamique haute-fréquence aux iles Kerguelen |
Type |
Master 2 |
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Year |
2018 |
Publication |
Stage m2 |
Abbreviated Journal |
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Programme |
688 |
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Approved |
yes |
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Call Number |
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Serial |
7620 |
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Author |
Aubry M. |
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Title |
Les Populations de Poa annua dans les îles subantarctiques françaises, crozet et Kerguelen:variation morphologique et diversité génétique. |
Type |
Report |
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Year |
1997 |
Publication |
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Abbreviated Journal |
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Abstract |
Mémoire D.E.A. 'Biol. Pop. Génét. et Eco-étho., Université de Rennes |
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Programme |
136 |
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Approved |
yes |
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Call Number |
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Serial |
1878 |
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Author |
Aubry Philippe, Pontier Dominique, Aubineau Jacky, Berger Francis, Léonard Yves, Mauvy Bernard, Marchandeau Stéphane, |
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Title |
Monitoring population size of mammals using a spotlight-count-based abundance index: How to relate the number of counts to the precision?
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Type |
Journal Article |
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Year |
2012 |
Publication |
Ecological Indicators |
Abbreviated Journal |
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Volume |
18 |
Issue |
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Pages |
599-607 |
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Keywords |
Abundance index, Spotlight counts, Observation error, Availability, Detectability, Sampling in time, Design-model-based inference, HansenHurwitzBershad model, Trend-stationary time series model, |
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Abstract |
Abundance indices are widely used to study changes in population size in wildlife management. However, a truly appropriate measure of precision is often lacking in such studies. Statistically, the two crucial issues regarding the use of an abundance index are sampling and observability, which lead one to consider two kinds of errors, namely sampling and observation errors. The purpose of this methodological paper is to relate the number of counts to the precision of an abundance index by introducing the HansenHurwitzBershad model which takes into account both sampling and observation errors. We illustrate this statistical approach in the case of a European rabbit (Oryctolagus cuniculus) abundance index based on spotlight counts, for two fixed spatial sampling units located in different ecological contexts. We show (i) that the usual sampling variance estimator is a downward-biased estimator of the total variance of the abundance index, (ii) that the bias of the usual variance estimator does not decrease when increasing the sampling size, (iii) that correlated observation errors may have a dramatic impact on the total variance, especially when the sampling size increases. The acknowledgement that the (pure) sampling variance underestimates the total variance because of observation errors is a statistical result that is neither widely known nor appreciated by most wildlife ecologists. The magnitude of this underestimation may be important and, therefore, observation errors cannot be always considered as a priori negligible in assessing the precision of a count-based abundance index. |
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Programme |
279 |
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Edition |
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ISSN |
1470-160X |
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Approved |
yes |
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Call Number |
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Serial |
3963 |
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Author |
Aude Chambodut and Michel Menvielle |
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Title |
LONGITUDINAL SECTORIAL INDICES COMPARED WITH PLANETARY K INDEX |
Type |
Conference - International - Poster |
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Year |
2013 |
Publication |
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Abbreviated Journal |
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Abstract |
IAGA 2013, aout 2013, Merida, Mexique.
The planetary three-hour range Kp index was introduced by J. Bartels in 1949. Kp is the average of standardized K-index from 13 observatories between 44° and 60° northern or southern geomagnetic latitude: 11 of them are located in North America and Europe and 2 in Australia and New Zealand. Such a distribution of the Kp observatories results in a UT dependent statistical bias in the estimate of planetary geomagnetic activity, since the geomagnetic activity intensity varies with Local Time. In this paper, we took advantage of the recent developments on sectorial indices to better characterize the description of planetary geomagnetic activity provided by Kp. |
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Programme |
139 |
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yes |
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Call Number |
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Serial |
4339 |
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Author |
Aude Chambodut and Michel Menvielle |
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Title |
LONGITUDINAL SECTORIAL INDICES COMPARED WITH PLANETARY K INDEX |
Type |
Conference - International - Poster |
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Year |
2013 |
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Abbreviated Journal |
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Abstract |
IAGA 2013, aout 2013, Merida, Mexique.
The planetary three-hour range Kp index was introduced by J. Bartels in 1949. Kp is the average of standardized K-index from 13 observatories between 44° and 60° northern or southern geomagnetic latitude: 11 of them are located in North America and Europe and 2 in Australia and New Zealand. Such a distribution of the Kp observatories results in a UT dependent statistical bias in the estimate of planetary geomagnetic activity, since the geomagnetic activity intensity varies with Local Time. In this paper, we took advantage of the recent developments on sectorial indices to better characterize the description of planetary geomagnetic activity provided by Kp. |
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Programme |
905 |
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yes |
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Serial |
4440 |
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