| Records |
Author  |
Palma, W.; Bondon, P.; Tapia, J. |
| Title |
Assessing influence in Gaussian long-memory models |
Type |
|
| Year |
2008 |
Publication |
Computational Statistics & Data Analysis |
Abbreviated Journal |
Comput. Stat. Data Anal. |
| Volume |
52 |
Issue |
9 |
Pages |
4487-4501 |
| Keywords |
|
| Abstract |
A statistical methodology for detecting influential observations in long-memory models is proposed. The identification of these influential points is carried out by case-deletion techniques. In particular, a Kullback-Leibler divergence is considered to measure the effect of a subset of observations on predictors and smoothers. These techniques are illustrated with an analysis of the River Nile data where the proposed methods are compared to other well-known approaches such as the Cook and the Mahalanobis distances. (c) 2008 Elsevier B.V. All rights reserved. |
| Address |
[Bondon, Pascal] Univ Paris 11, CNRS, UMR 8506, F-91192 Gif Sur Yvette, France, Email: bondon@lss.supelec.fr |
| Corporate Author |
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Thesis |
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| Publisher |
Elsevier Science Bv |
Place of Publication |
|
Editor |
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| Language |
English |
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 |
|
Edition |
|
| ISSN |
0167-9473 |
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 |
WOS:000257014000023 |
Approved |
|
| Call Number |
UAI @ eduardo.moreno @ |
Serial |
40 |
| Permanent link to this record |
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| Author |
Tapia, J.E.; Gonzalez, B.; Goulitquer, S.; Potin, P.; Correa, J.A. |
| Title |
Microbiota Influences Morphology and Reproduction of the Brown Alga Ectocarpus sp |
Type |
|
| Year |
2016 |
Publication |
Frontiers In Microbiology |
Abbreviated Journal |
Front. Microbiol. |
| Volume |
7 |
Issue |
|
Pages |
14 pp |
| Keywords |
microbiota; bacteria-algae interaction; Ectocarpus; bacterial isolate; algal morphology; exometabolome |
| Abstract |
Associated microbiota play crucial roles in health and disease of higher organisms. For macroalgae, some associated bacteria exert beneficial effects on nutrition, morphogenesis and growth. However, current knowledge on macroalgae microbiota interactions is mostly based on studies on green and red seaweeds. In this study, we report that when cultured under axenic conditions, the filamentous brown algal model Ectocarpus sp. loses its branched morphology and grows with a small ball like appearance. Nine strains of periphytic bacteria isolated from Ectocarpus sp. unialgal cultures were identified by 16S rRNA sequencing, and assessed for their effect on morphology, reproduction and the metabolites secreted by axenic Ectocarpus sp. Six of these isolates restored morphology and reproduction features of axenic Ectocarpus sp. Bacteria-algae co-culture supernatants, but not the supernatant of the corresponding bacterium growing alone, also recovered morphology and reproduction of the alga. Furthermore, colonization of axenic Ectocarpus sp. with a single bacterial isolate impacted significantly the metabolites released by the alga. These results show that the branched typical morphology and the individuals produced by Ectocarpus sp. are strongly dependent on the presence of bacteria, while the bacterial effect on the algal exometabolome profile reflects the impact of bacteria on the whole physiology of this alga. |
| Address |
[Tapia, Javier E.; Correa, Juan A.] Univ Paris 06, CNRS, Biol & Ecol Algae, Stn Biol Roscoff, Roscoff, France, Email: jcorrea@bio.puc.cl |
| Corporate Author |
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Thesis |
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| Publisher |
Frontiers Media Sa |
Place of Publication |
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Editor |
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| Language |
English |
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 |
1664-302x |
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 |
WOS:000370760000001 |
Approved |
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| Call Number |
UAI @ eduardo.moreno @ |
Serial |
589 |
| Permanent link to this record |
