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Article ; Online: The relative influence of catchment, riparian corridor, and reach-scale anthropogenic pressures on fish and macroinvertebrate assemblages in French rivers

Marzin, A. / Verdonschot, P.F.M. / Pont, D.

2013 Volume 704, Issue 1

Abstract: This study compares the relative influences of physiography and anthropogenic pressures on river biota at catchment, riparian corridor, and reach scales. Environmental data, catchment and riparian corridor land use, anthropogenic modifications and ... ...

Abstract	This study compares the relative influences of physiography and anthropogenic pressures on river biota at catchment, riparian corridor, and reach scales. Environmental data, catchment and riparian corridor land use, anthropogenic modifications and biological data were compiled for 301 French sites sampled from 2005 to 2008. First, relationships between anthropogenic pressures and fish and macroinvertebrate assemblages were analysed using redundancy analysis. Second, the influences of physiography and the three scales of human pressures on biological assemblages were measured using variance partitioning. Distributions of fish and macroinvertebrate taxa along the pressure gradients agreed with bio-ecological knowledge. At the reach scale, assemblage variability among the 301 French sites was related to the presence of an impoundment and to poor water quality, while at larger scales it was linked to a gradient from forest to agricultural covers. In addition, a large proportion of the explained variability in assemblage composition was related to complex interactions among factors (~40%) and to physiographic variables (~30%). Furthermore, our results highlight that catchment land use better reflects local water quality impairments than hydromorphological degradations. Finally, this study supports the idea that human pressure effects on river communities are linked at several spatial scales and must be considered jointly.
Keywords	communities ; habitat ; land-use ; landscape influences ; multiple spatial scales ; running waters ; species traits ; stream biotic integrity ; usa ; water-quality
Language	English
Publishing country	nl
Document type	Article ; Online
ZDB-ID	214428-1
ISSN	1573-5117 ; 0018-8158
ISSN (online)	1573-5117
ISSN	0018-8158
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Uncertainty associated with river health assessment in a varying environment: The case of a predictive fish-based index in France

Marzin, A. / Delaigue, O. / Logez, M. / Belliard, J. / Pont, D.

Ecological indicators

2014 Volume 43, Issue -, Page(s) 195

Language	English
Document type	Article
ZDB-ID	2036774-0
ISSN	1470-160x
Database	Current Contents Nutrition, Environment, Agriculture

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Article: The relative influence of catchment, riparian corridor, and reach-scale anthropogenic pressures on fish and macroinvertebrate assemblages in French rivers

Marzin, Anahita / Verdonschot, Piet F. M / Pont, Didier

Hydrobiologia. 2013 Mar., v. 704, no. 1

2013

Abstract	This study compares the relative influences of physiography and anthropogenic pressures on river biota at catchment, riparian corridor, and reach scales. Environmental data, catchment and riparian corridor land use, anthropogenic modifications and biological data were compiled for 301 French sites sampled from 2005 to 2008. First, relationships between anthropogenic pressures and fish and macroinvertebrate assemblages were analysed using redundancy analysis. Second, the influences of physiography and the three scales of human pressures on biological assemblages were measured using variance partitioning. Distributions of fish and macroinvertebrate taxa along the pressure gradients agreed with bio-ecological knowledge. At the reach scale, assemblage variability among the 301 French sites was related to the presence of an impoundment and to poor water quality, while at larger scales it was linked to a gradient from forest to agricultural covers. In addition, a large proportion of the explained variability in assemblage composition was related to complex interactions among factors (~40%) and to physiographic variables (~30%). Furthermore, our results highlight that catchment land use better reflects local water quality impairments than hydromorphological degradations. Finally, this study supports the idea that human pressure effects on river communities are linked at several spatial scales and must be considered jointly.
Keywords	anthropogenic activities ; fish ; forests ; land use ; macroinvertebrates ; rivers ; water quality ; watersheds
Language	English
Dates of publication	2013-03
Size	p. 375-388.
Publishing place	Springer-Verlag
Document type	Article
ZDB-ID	214428-1
ISSN	1573-5117 ; 0018-8158
ISSN (online)	1573-5117
ISSN	0018-8158
DOI	10.1007/s10750-012-1254-2
Database	NAL-Catalogue (AGRICOLA)

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Article: Uncertainty associated with river health assessment in a varying environment: The case of a predictive fish-based index in France

Marzin, Anahita / Didier Pont / JÃ©rÃ´me Belliard / Maxime Logez / Olivier Delaigue

Ecological indicators. 2014 Aug., v. 43

2014

Abstract: Sensitive biological measures of river ecosystem quality are needed to assess, maintain or restore ecological conditions of water bodies. Since our understanding of these complex systems is imperfect, decision-making requires recognizing uncertainty. In ... ...

Abstract	Sensitive biological measures of river ecosystem quality are needed to assess, maintain or restore ecological conditions of water bodies. Since our understanding of these complex systems is imperfect, decision-making requires recognizing uncertainty. In this study, a new predictive multi-metric index based on fish functional traits was developed to assess French rivers. Information on fish assemblage structure, local environment and human-induced disturbances of 1654 French river sites was compiled. A Bayesian framework was used to predict theoretical metric values in absence of human pressure and to estimate the uncertainty associated with these predictions. The uncertainty associated with the index score gives the confidence associated with the evaluation of site ecological conditions.Among the 228 potential metrics tested, only 11 were retained for the index computation. The final index is independent from natural variability and sensitive to human-induced disturbances. In particular, it is affected by the accumulation of different degradations and specific degradations including hydrological perturbations. Predictive uncertainty is globally lower for IPR+ than for underlying metrics.This new methodology seems appropriate to develop bio-indication tools accounting for uncertainty related to reference condition definition and could be extended to other biological groups and areas. Our results support the use of multi-metric indexes to assess rivers and strengthen the idea that examination of uncertainty could contribute greatly to the improvement of the assessment power of bio-indicators.
Keywords	decision making ; ecosystems ; fish ; humans ; methodology ; prediction ; rivers ; surface water ; uncertainty ; France
Language	English
Dates of publication	2014-08
Size	p. 195-204.
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	2036774-0
ISSN	1470-160X
ISSN	1470-160X
DOI	10.1016/j.ecolind.2014.02.011
Database	NAL-Catalogue (AGRICOLA)

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Article: Ecological assessment of running waters: Do macrophytes, macroin vertebrates, diatoms and fish show similar responses to human pressures?

Marzin, A. / Archaimbault, V. / Belliard, J. / Chauvin, C. / Delmas, F. / Pont, D.

Ecological indicators

2012 Volume 23, Issue -, Page(s) 56

Language	English
Document type	Article
ZDB-ID	2036774-0
ISSN	1470-160x
Database	Current Contents Nutrition, Environment, Agriculture

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Article: Intralabyrinthine schwannomas: symptoms and managements.

Jia, Huan / Marzin, Alexandre / Dubreuil, Christian / Tringali, Stéphane

Auris, nasus, larynx

2008 Volume 35, Issue 1, Page(s) 131–136

Abstract: Objective: To describe the characteristic presentations, radiologic findings and managements of the intralabyrinthine schwannomas.: Method: Retrospective review of patient records, their managements, and review of the literature.: Result: Four ... ...

Abstract	Objective: To describe the characteristic presentations, radiologic findings and managements of the intralabyrinthine schwannomas. Method: Retrospective review of patient records, their managements, and review of the literature. Result: Four patients with a variety of otologic symptoms including hearing loss, vertigo, and tinnitus were found to have a schwannomas involving the labyrinth. In all cases, the inner ear lesions were preoperatively identified on magnetic resonance imaging, and the surgical removals were performed in all patients without serviceable hearing. The patients experienced improvement in their vertigo and tinnitus after surgery. Two patients were implanted the Bone-Anchored Hearing Aid (BAHA) to reconstruct the pseudo-stereophonic hearing. Conclusion: Intralabyrinthine schwannomas are the rare tumours in the otology. The tumour can be removed by surgical approach, but we do not propose surgical excision for the patients with serviceable hearing. BAHA can give patients a post-operative monaural pseudo-stereophonic hearing.
MeSH term(s)	Adult ; Diagnosis, Differential ; Ear, Inner/pathology ; Ear, Inner/surgery ; Female ; Hearing Aids ; Hearing Loss, Unilateral/etiology ; Hearing Loss, Unilateral/rehabilitation ; Humans ; Image Processing, Computer-Assisted ; Magnetic Resonance Imaging ; Male ; Meniere Disease/etiology ; Middle Aged ; Neuroma, Acoustic/diagnosis ; Neuroma, Acoustic/surgery ; Postoperative Complications/etiology ; Postoperative Complications/rehabilitation ; Tinnitus/etiology
Language	English
Publishing date	2008-03
Publishing country	Netherlands
Document type	Case Reports ; Journal Article
ZDB-ID	604552-2
ISSN	1879-1476 ; 0385-8146
ISSN (online)	1879-1476
ISSN	0385-8146
DOI	10.1016/j.anl.2007.07.010
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Ecological assessment of running waters: Do macrophytes, macroinvertebrates, diatoms and fish show similar responses to human pressures?

Marzin, Anahita / Archaimbault, Virginie / Belliard, Jérôme / Chauvin, Christian / Delmas, François / Pont, Didier

Ecological indicators. 2012 Dec., v. 23

2012

Abstract: This study aimed to compare the intensity and the sensitivity of the responses of four river biological quality elements (BQEs) – macrophytes, fish, diatoms and macroinvertebrates – to human pressures excluding natural variations in stream ecosystem ... ...

Abstract	This study aimed to compare the intensity and the sensitivity of the responses of four river biological quality elements (BQEs) – macrophytes, fish, diatoms and macroinvertebrates – to human pressures excluding natural variations in stream ecosystem functioning. Biological, water quality and hydro-morphological data were compiled for 290 French river sites. Out of the 93 metrics tested, 51 covering the four BQEs responded significantly to global degradation. The responses to specific pressures were consistent with the BQEs’ ecological and biological characteristics. For the four BQEs, metrics responded strongly to water quality degradations. Like fish, macroinvertebrate metrics were very sensitive to morphological degradations such as the presence of an impoundment, while diatom and macrophyte metrics did not show strong responses to these changes. Among the four BQEs’ metrics, fish metrics responded the strongest to hydrological perturbations. Although a high proportion of the metrics responded only to high levels of human-induced degradations, trait-based metrics seemed the most sensitive and responded to lower levels of pressure. Global and water quality degradations of the river appear to be better detected by BQE metrics than channel morphological and hydrological degradations. Our results highlight the different impacts of human-induced pressures on the four BQE metrics and the challenging task of assessing the effect of single pressures when most of sites are multi-impacted.
Keywords	Bacillariophyta ; ecosystems ; fish ; humans ; macroinvertebrates ; macrophytes ; rivers ; streams ; water ; water quality
Language	English
Dates of publication	2012-12
Size	p. 56-65.
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	2036774-0
ISSN	1470-160X
ISSN	1470-160X
DOI	10.1016/j.ecolind.2012.03.010
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Méningiomes de la face postérieure du rocher: aspects diagnostiques et therapeutiques.

Tringali, Stéphane / Marzin, Alexandre / Zaouche, Sandra / Céruse, Philippe / Dubreuil, Christian

Journal of otolaryngology - head & neck surgery = Le Journal d'oto-rhino-laryngologie et de chirurgie cervico-faciale

2008 Volume 37, Issue 1, Page(s) 98–104

Abstract: Objective: To compare the clinical and paraclinical picture and the postoperative results of meningiomas of the posterior petrous bone and to compare them with those of vestibular schwannomas (VSs) operated on by the same surgical team.: Material and ... ...

Title translation	Meningiomas of the posterior petrous bone: diagnostic and therapeutic aspects.
Abstract	Objective: To compare the clinical and paraclinical picture and the postoperative results of meningiomas of the posterior petrous bone and to compare them with those of vestibular schwannomas (VSs) operated on by the same surgical team. Material and method: A retrospective study of 27 patients (23 females) operated on for meningioma of the posterior petrous bone between 1994 and 2004. These were compared with 424 patients with VS operated on between October 1994 and January 2001. All patients had a full audiovestibular workup before and after surgery. Tumours were classified according to the Desgeorges classification for meningiomas and Koss for the VS. RESULTS-DISCUSSION: For smaller tumours, facial function is better for the VS, whereas other cranial nerves are more frequently affected in the meningiomas. For larger tumours, facial function results are better for meningiomas, but other cranial nerve complications are more frequent, with a 33.3% cranial nerve V complication rate and a mortality rate of 6.6%. Conclusion: Meningiomas of the posterior temporal bone may present clinically and radiologically like a VS, especially for intracanalar tumour and stage IV tumours. For smaller meningiomas, hearing preservation is similar to VS and could be proposed even for stage III meningiomas. On the other hand, trigeminal nerve, facial nerve, and other cranial nerve complications are more common after excision of stage I and II meningiomas.
MeSH term(s)	Adolescent ; Adult ; Aged ; Aged, 80 and over ; Child ; Cranial Nerve Injuries/etiology ; Female ; Humans ; Male ; Meningeal Neoplasms/diagnosis ; Meningeal Neoplasms/surgery ; Meningioma/diagnosis ; Meningioma/surgery ; Middle Aged ; Neuroma, Acoustic/diagnosis ; Neuroma, Acoustic/surgery ; Otorhinolaryngologic Surgical Procedures/adverse effects ; Petrous Bone ; Retrospective Studies
Language	French
Publishing date	2008-02
Publishing country	England
Document type	Comparative Study ; English Abstract ; Journal Article
ZDB-ID	2434004-2
ISSN	1916-0216 ; 1916-0208 ; 0381-6605
ISSN (online)	1916-0216
ISSN	1916-0208 ; 0381-6605
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Zs.A 1130: Show issues

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Article: Bone-anchored hearing aid in unilateral inner ear deafness: electrophysiological results in patients following vestibular schwannoma removal.

Tringali, Stephane / Marzin, Alexandre / Dubreuil, Christian / Ferber-Viart, Chantal

Acta oto-laryngologica

2008 Volume 128, Issue 11, Page(s) 1203–1210

Abstract: Conclusions: The results show that the healthy cochlea perceives one auditory stimulus from two auditory signals: the first through normal air conduction and the second provided by the bone-anchored hearing aid (BAHA). This artificial acoustic ... ...

Abstract	Conclusions: The results show that the healthy cochlea perceives one auditory stimulus from two auditory signals: the first through normal air conduction and the second provided by the bone-anchored hearing aid (BAHA). This artificial acoustic difference could partly explain 'pseudo' binaural hearing. Functional cerebral imaging using the same experimental procedure is now necessary. Objectives: The aim of this study was to evaluate electrophysiological phenomena induced by BAHA on brainstem and long-latency auditory evoked potentials (AEPs) to understand how patients recover a 'pseudo' binaural sensation with only one functional cochlea. Patients and methods: This prospective study included 10 patients operated via the translabyrinthine approach and who received implants on the deaf side. Electrophysiological recordings were performed at least 2 months after BAHA use. Brainstem and long-latency (N1, P2, N2, P300) AEPs were studied in free field according to four conditions: 1, without BAHA; 2, with BAHA; 3, with BAHA and normal ear occluded; 4, without BAHA and normal ear occluded. Results: For brainstem AEPs, we found significantly longer latencies of waves III and V in condition 3 compared with condition 1. For long-latency AEPs, comparison between conditions showed no significant differences.
MeSH term(s)	Aged ; Bone Conduction ; Evoked Potentials, Auditory ; Evoked Potentials, Auditory, Brain Stem ; Female ; Hearing Aids ; Hearing Loss, Unilateral/etiology ; Hearing Loss, Unilateral/physiopathology ; Hearing Loss, Unilateral/rehabilitation ; Humans ; Male ; Middle Aged ; Neuroma, Acoustic/surgery
Language	English
Publishing date	2008-11
Publishing country	England
Document type	Journal Article
ISSN	0001-6489
ISSN	0001-6489
DOI	10.1080/00016480801901642
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Book ; Online: Driver-pressure-impact and response-recovery chains in European rivers

Feld, C.K. / Dahm, V. / Lorenz, A. / Logez, M. / Marzin, A. / Verdonschot, P.F.M. / Michels, H.C.U. / Keizer-Vlek, H.E.

observed and predicted effects on BQEs

2011

Abstract: The report presented in the following is part of the outcome of WISER’s river Workpackage WP5.1 and as such part of the module on aquatic ecosystem management and restoration. The ultimate goal of WP5.1 is to provide guidance on best practice restoration ...

Abstract	The report presented in the following is part of the outcome of WISER’s river Workpackage WP5.1 and as such part of the module on aquatic ecosystem management and restoration. The ultimate goal of WP5.1 is to provide guidance on best practice restoration and management to the practitioners in River Basin Management. Therefore, a series of analyses was undertaken, each of which used a part of the WP5.1 database in order to track two major pathways of biological response: 1) the response of riverine biota to environmental pressures (degradation) and 2) the response of biota to the reduction of these impacts (restoration). This report attempts to provide empirical evidence on the environment-biota relationships for both pathways.
Keywords	aquatic ecology ; biota ; databases ; ecological restoration ; europe ; rivers ; watersheds ; aquatische ecologie ; databanken ; ecologisch herstel ; europa ; rivieren ; stroomgebieden
Subject code	550
Language	English
Publisher	European Commission
Publishing country	nl
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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