Unpublished conference/Abstract (Scientific congresses and symposiums)
Cyanobacteria - the constructors of travertines?
Kleinteich, Julia; Stelmach Pessi, Igor; Velazquez, David et al.
20152015 Aquatic Sciences Meeting 'Aquatic Sciences: global and regional perspectives - North meets South'
 

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Keywords :
cyanobacteria; travertines
Abstract :
[en] Cyanobacteria are participating in carbonate build-up and travertine formation in the Belgian river Hoyoux and its tributaries. In this study, we sampled calcareous material from travertines and oncoliths from four sampling sites on the Hoyoux river and Triffoy brook. In addition, the water chemistry was determined. The structure of the material was analyzed by Scanning Electron Microscopy and Raman microscopy (?°. The dominant cyanobacterial species was isolated and identified on the basis of microscopic observation and amplification of the 16S-ITS fragment as Phormidium sp., likely functioning as the ‘architect’ of the travertine system. In order to describe the full diversity of the travertine system and to discriminate between the active fraction and inactive or dead organic matter, DNA as well as RNA was extracted from the travertine material, amplified using cyanobacteria specific primers and sequenced by 454 pyrosequencing. To detect seasonal changes in the biological activity, summer and winter time points were compared. This study reveals the ecology of an overlooked environment in Belgian river systems and tries to explain the build-up of travertines.
Research center :
CIP - Centre d'Ingénierie des Protéines - ULiège
FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège
Disciplines :
Microbiology
Aquatic sciences & oceanology
Environmental sciences & ecology
Author, co-author :
Kleinteich, Julia
Stelmach Pessi, Igor ;  Université de Liège - ULiège > Centre d'ingénierie des protéines
Velazquez, David
Javaux, Emmanuelle  ;  Université de Liège - ULiège > Département de géologie > Paléobiogéologie - Paléobotanique - Paléopalynologie (PPP)
Storme, Jean-Yves ;  Université de Liège - ULiège > Département de géologie > Paléobiogéologie - Paléobotanique - Paléopalynologie (PPP)
Darchambeau, François ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique
Borges, Alberto  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie chimique
Compère, Philippe ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Département de Biologie, Ecologie et Evolution
Golubic, Stjepko
Wilmotte, Annick  ;  Université de Liège - ULiège > Département des sciences de la vie > Physiologie et génétique bactériennes
Language :
English
Title :
Cyanobacteria - the constructors of travertines?
Publication date :
February 2015
Number of pages :
1
Event name :
2015 Aquatic Sciences Meeting 'Aquatic Sciences: global and regional perspectives - North meets South'
Event organizer :
Association for the Sciences of Limnology and Oceanography (ASLO)
Event place :
Grenada, Spain
Event date :
22-27 February 2015
Audience :
International
Name of the research project :
Mission FNRS: Caractérisation des processus de fossilisation dans les roches calcaires et évolution des cyanobactéries impliquées dans la biominéralisation
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
UE - Union Européenne [BE]
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
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since 02 April 2015

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