David Grimardias

David Grimardias
University of Applied Sciences and Arts Western Switzerland · inTNE - Institut Terre-Nature-Environnement

PhD

About

17
Publications
3,358
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
101
Citations
Citations since 2016
8 Research Items
78 Citations
201620172018201920202021202205101520
201620172018201920202021202205101520
201620172018201920202021202205101520
201620172018201920202021202205101520
Additional affiliations
May 2013 - present
University of Applied Sciences and Arts Western Switzerland
Position
  • Research Associate
December 2009 - September 2012
University of Applied Sciences and Arts Western Switzerland
Position
  • Research Assistant
November 2005 - November 2009
French National Institute for Agriculture, Food, and Environment (INRAE)
Position
  • PhD Student

Publications

Publications (17)
Article
For species at risk, rehabilitation of riverbank habitats may be a promising way to sustain abundance of early-life stages, provided that fish—habitat relationships are significant and the scale at which they are described is relevant to both fish ecology and management purposes. Here, habitat use of the threatened European grayling (Thymallus thym...
Technical Report
Full-text available
Le déclin des populations d'ombre commun (Thymallus thymallus L.) européennes est un phénomène général qui s'observe sur toute l'aire occidentale de distribution de l'espèce, notamment en Suisse où elle est considérée comme menacée. De nombreuses actions de repeuplement ont été mises en oeuvre afin de soutenir ces populations, mais souvent sans rés...
Article
Full-text available
The restoration of migration pathways for fish is crucial for the maintenance of populations in a worldwide context of increasing river fragmentation due to the development of dams. Studies aiming at quantifying fish passage at dams through fishway efficiency estimates concern few species, mostly diadromous. Data are lacking regarding most potamodr...
Article
With a growing demand for hydroelectric energy, the number of reservoirs is dramatically increasing worldwide. These new water bodies also present an opportunity for the development of fishing activities. However, these reservoirs are commonly impounded on uncut forests, resulting in many immersed trees. These trees hinder fish assessments by disru...
Article
Full-text available
Trophic interactions are central in understanding ecosystem processes and the management of natural ecosystems but are frequently complex to estimate. To address this issue, body size has been shown to be a useful trait to reconstruct species interactions, particularly in aquatic ecosystems. An allometric niche model (aNM) considering body size as...
Article
Sediment trapping within reservoirs is a worldwide phenomenon which impairs the ecological functioning of upstream and downstream ecosystems. It also reduces reservoir water storage volume, which lessens the services dams provide such as hydropower production or flood control and questions their sustainability. Hydraulic flushing is a widely used o...
Technical Report
Full-text available
Final report of the Interreg Project 'ESPACE Arve & Rhône' (2013-2015), which aimed to investigate movements and effects of barriers for four fish species at a large basin scale. Individual movement patterns, home ranges, mobile and resident fractions of populations, and effects of barriers (mainly hydroelectric dams) were assessed over 2 years by...
Technical Report
Full-text available
Les captures d’ombre commun par la pêche sont en déclin depuis les années 90 sur de nombreux cours d’eau helvétiques, dont l’Orbe en Vallée de Joux. L’espèce est aujourd’hui considérée comme menacée, et classée en priorité élevée en Suisse. Des échantillonnages réalisés en 2010 et 2011 sur 5 stations ont mis en évidence des densités (de 0 à 4.69 in...
Article
The effect of the presence of stone blocks in the spawning habitat on the reproductive success of mature male parr of Atlantic salmon Salmo salar of various sizes and ages was tested in an artificial channel. Shelters allowed smaller individuals to contribute to egg fertilization as much as large parr, suggesting that the size-based dominance obser...
Article
Grimardias D, Merchermek N, Manicki A, Garnier J, Gaudin P, Jarry M, Beall E. Reproductive success of Atlantic salmon (Salmo salar) mature male parr in a small river, the Nivelle: influence of shelters. Ecology of Freshwater Fish 2010: 19: 510–519. © 2010 John Wiley & Sons A/SAbstract –  The breeding activity of a small population of Atlantic salmo...

Network

Cited By

Projects

Projects (2)
Archived project
This project aimed to study for the first time the European catfish (Silurus glanis) colonization in large French peri-ALpine lakes (Lakes Bourget and Geneva). Firstly, its trophic ecology was investigated through stomach contents, stable isotopes and metabarcoding analyses in order to identify its main prey species and their potential vulnerability to this new invader. Secondly, the catfish impacts were studied using food web inferences, and population dynamic models.
Project
We assess ecological impacts of fine sediment flushings from a large hydroelectric reservoir on the Rhône River to help defining more sustainable management strategies. We use a combination of echosounding and radiotelemetry approaches to evaluate changes in fish biomass, individual survival, and behaviour before, during, and after sediment flushings.