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Articles avec #materiels et methodes


13 Octobre 2017,

Publié par Bioécologie

Jay Piggott (and Scott Tiegs):

"Dear Colleagues,

As an AQUACOSM facility operator, I am seeking your support and participation in a distributed experiment across the AQUACOSM mesocosm network to include a cotton-strip decay assay as a standardised measure of ecosystem function in planned/future experiments (papers attached). This proposed study (aka. AQUACOSM-CELLDEX) compliments the past efforts of the CELLDEX (CELLulose Decomposution EXperiment) project led by project partner Scott Tiegs (Oakland University, USA) that engaged >132 crowd-sourced researchers to characterise cellulose decomposition using cotton-strips in >500 streams across 40 countries (info attached). The assay is simple to use, requiring less than 5 minutes to introduce into and remove from each mesocosm.

The objective of AQUACOSM-CELLDEX is to use a standardized assay to quantify stressor impacts on different types of aquatic ecosystems – across multiple locations, latitudes and biomes (pond, stream and marine). In particular, we are interested in partnering on experiments manipulating environmental stressors including nutrients, temperature, pH and other climate stressors (e.g. browning)."

More information here

AQUACOSM: EU network of mesocosms facilities for research on marine and freshwater ecosystems open for global collaboration.

11 Octobre 2017,

Publié par Bioécologie

Experimentation in mesocosms is arguably the single most powerful approach to obtain a mechanistic quantitative understanding of ecosystem-level impacts of stressors in complex systems, especially when embedded in long-term observations, theoretical models and experiments conducted at other scales.

AQUACOSM builds on an established European network of mesocosm research infrastructures (RI), the FP7 Infra project MESOAQUA (2009-2012), where 167 users successfully conducted 74 projects. AQUACOSM greatly enhances that network on pelagic marine systems in at least 3 ways: first by expanding it to 10 freshwater (rivers and lakes), 2 brackish and 2 benthic marine facilities, and by involving 2 SMEs and reaching out to more, thereby granting effective transnational access to world-leading mesocosm facilities to >340 users on >11500 days; second, by integrating scattered know-how between freshwater and marine RI; and third, by uniting aquatic mesocosm science in an open network beyond the core consortium, with industry involved in an ambitious innovation process, to promote ground-breaking developments in mesocosm technology, instrumentation and data processing.

A new dimension of experimental ecosystem science will be reached by coordinated mesocosm experiments along transects from the Mediterranean to the Arctic and beyond salinity boundaries. These efforts will culminate in a joint research activity (JRA) to assess aquatic ecosystem responses across multiple environmental gradients to a selected climate-related key stressor with repercussions for ecosystem services.

Overall, AQUACOSM will fill a global void by forging an integrated freshwater and marine research infrastructure network. Long-term sustainability is sought through assessing governance models based on science priorities and economic innovation opportunities. Linkages to and synergies with ESFRI RI and other large initiatives are ensured by AQUACOSM partners and Advisory Board members in those programs.


RESAMA : Réseau d'Étude Sanitaire des Animaux Modèles Aquatiques

9 Octobre 2017,

Publié par Bioécologie

Au sein de la communauté scientifique nationale et internationale, de plus en plus d'équipes de recherche choisissent comme animal modèle une espèce aquatique. L'espèce phare de ces dernières années est le poisson-zèbre (Danio rerio) qui est devenu un modèle important dans de nombreux domaines de recherche.

Les contraintes zootechniques, financières, réglementaires et éthiques liées à l'utilisation des modèles aquatiques sont plus abordables pour les jeunes équipes de recherche.

Le nombre de structures utilisant les animaux modèles aquatiques tend à augmenter, la dimension de ces structures évolue, et les échanges d'animaux entre laboratoires se multiplient. Par ailleurs, ces élevages aquatiques imposent une maitrise zootechnique spécifique ainsi que du personnel formé.

Cependant, d'importances lacunes concernant les aspects sanitaires de ces élevages aquatiques persistent. Les connaissances sont morcelées, cloisonnées et ne permettent pas une vision claire des méthodes de gestion sanitaire des animaleries aquatiques. Les outils de diagnostics adaptés à ces espèces modèles sont trop peu développés et les méthodes de décontamination des œufs doivent également être améliorées afin de sécuriser les échanges d'animaux.

Fort de ce constat, l'UMS AMAGEN, en collaboration avec le Dr. Norin Chai, vétérinaire de la Ménagerie du Muséum National d'Histoire Naturelle de Paris et le CRB Xénope de l'Université de Rennes, a souhaité développer le réseau RESAMA (Réseau d'Étude Sanitaire des Animaux Modèles Aquatiques) afin de permettre à la communauté scientifique de s'informer sur le statut sanitaire des animaux modèles aquatiques.

Cliquez ici pour en savoir plus

RESAMA :  Réseau d'Étude Sanitaire des Animaux Modèles Aquatiques


8 Octobre 2017,

Publié par Bioécologie

TreeDivNet is a global network of tree diversity experiments, which provides a unique platform for research on the relation between tree species diversity and ecosystem functioning in major forest types around the world. Read the first TreeDivNet paper for a comprehensive description of the network, some first research results and future perspectives: Contributions of a global network of tree diversity experiments to sustainable forest plantations (pdf).



4 Octobre 2017,

Publié par Bioécologie

The FunDivEurope Knowledge Transfer Platform supports communication and knowledge exchange among stakeholders, scientists, policy makers and the public regarding the understanding about the functional significance of biodiversity for the provision of forest ecosystem services in major European forest types. The aim is to understand and quantify how tree species diversity can be used to foster the provision of ecosystem services such as timber production, carbon sequestration and freshwater provisioning.

Read more!


Adverse Outcome Pathways, Molecular Screening and Toxicogenomics

13 Septembre 2017,

Publié par Bioécologie

The OECD launched a new programme on the development of Adverse Outcome Pathways (AOP) in 2012. An AOP is an analytical construct that describes a sequential chain of causally linked events at different levels of biological organisation that lead to an adverse health or ecotoxicological effect (see figure below). AOPs are the central element of a toxicological knowledge framework being built to support chemical risk assessment based on mechanistic reasoning.

Adverse Outcome Pathways, Molecular Screening and Toxicogenomics

The Causal Analysis/Diagnosis Decision Information System: CADDIS

29 Août 2017,

Publié par Bioécologie

The Causal Analysis/Diagnosis Decision Information System, or CADDIS, is a website developed to help scientists and engineers in the Regions, States, and Tribes conduct causal assessments in aquatic systems. It is organized into five volumes.

The Causal Analysis/Diagnosis Decision Information System: CADDIS

MOSAIC: MOdeling and StAtistical tools for ecotoxICology

20 Juillet 2017,

Publié par Bioécologie

MOSAIC is a web interface dedicated to the mathematical and statistical modelling of bioassay data. Bioassays are conducted in ecotoxicology to measure acute or chronic effects of potentially toxic substances on reproduction, growth and/or survival of living organisms.

MOSAIC is a turnkey decision-making tool for ecotoxicologists and regulators. Without wasting time on extensive mathematical and statistical technicalities, users are given advanced and innovative methods for a valuable quantitative environmental risk assessment.

MOSAIC is developed within the Biometry and Evolutionary Biology Laboratory (UMR CNRS 5558) of University Lyon 1.

MOSAIC: MOdeling and StAtistical tools for ecotoxICology

WAMWiki: the wild animal models wiki

5 Juillet 2017,

Publié par Bioécologie

WAMwiki is an on-line resource containing information and resources for anyone interested in learning more about and applying quantitative genetic methods - but especially for those interested in using quantitative genetics in natural populations.

Recent discussions at the Wild Animal Model BienniAl Meeting (WAMBAM 3) and work on a guide to the animal model for ecologists encouraged us to set up this wiki to allow the community of researchers working on wild populations to share their experience and tips for data analysis. We chose to develop a wiki as we would like the site to act as an easy and flexible way to share knowledge.

WAMWiki: the wild animal models wiki