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Title

[REPORT À 2025] Ecology, Physiology and Control of Toxin-Producing Benthic Cyanobacteria

Dates

5 & 6 September 2024

Organizer(s)

Dr. Diego Gonzalez, UNINE

Speakers

o Susie Wood, Cawthron Institute, New Zealand (toxic benthic cyanobacterial proliferations)

o Hilary Snook, USEPA New England Regional laboratory, USA (cyanobacterial surveillance programs in the USA)

o Jean-François Humbert, INRAE, France (benthic cyanobacterial proliferations in France)

o Catherine Quiblier, Museum national d'Histoire naturelle de Paris, France (benthic cyanobacterial proliferations in France)

o Elisabeth Janssen, EAWAG, Suisse (cyanotoxins)

 

Description

Invasive toxin-producing cyanobacteria pose a major threat to freshwater ecosystems. When environmental conditions become favorable or detrimental to their natural enemies, some cyanobacterial strains can multiply rapidly, forming so called "blooms". Cyanobacterial blooms can quickly degrade aquatic ecosystems, altering their trophic structure and functionality, and causing water column deoxygenation leading to fish mortality. They can also alter water quality and heavily impact the economic value of freshwater resources. Harmful blooms are not limited to one region or country, but are becoming fast a global issue with the number of reports increasing all over the world. Some cyanobacteria live suspended in the water column (planktonic cyanobacteria), while others form mats right under the surface (metaphytic cyanobacteria) or grow attached to algae, macrophytes or even other cyanobacteria (epiphytic cyanobacteria); finally, some of them colonize the rocky or sandy substrates of oceans, lakes, or rivers at variable depths (benthic cyanobacteria). While planktonic cyanobacteria have focused the attention of biologists and ecologists, research about primarily substrate-bound (benthic) species is lagging. By combining presentations by experts with a field activity in a study area in which blooms have been studied over three years, the goal of this activity is to provide the participants with the latest scientific knowledge in this issue, as well as discuss with them the role of combining field and experimental work to increase this knowledge.

Program

5 September 2024

9:00-9:10

Pilar Junier (University of Neuchâtel, Switzerland)

Introduction

9:10-9:30

Sami Zhioua, Margaux Corset

Sampling in the Areuse

 

9:30-10:10

Jean-François Humbert (INRAE, France)

Introduction to cyanobacterial blooms

 

10:10-10:30

Coffee break

10:30-12:00

Susie Wood (Cawthron Institute, New Zealand)

Benthic cyanobacterial blooms in New Zealand

Catherine Quiblier (Paris Cité / Museum National d'Histoire

Naturelle, France) and Jean-François Humbert (INRAE, France)

Benthic cyanobacterial blooms in Europe and New Zealand: characteristics and ecological drivers

 

12:00-13:15

Lunch break

13:15-16:00

Sami Zhioua, Margaux Corset

Scouting and sampling the Areuse for benthic mats

 

16:00-17:00

Sami Zhioua, Margaux Corset

Microscopy and toxicology on benthic samples

***

6 September 2024

9:00-9:30

Diego Gonzalez (University of Neuchâtel, Switzerland)

Genomics of Microcoleus anatoxicus

 

 

9:30-10:30

Elisabeth Jansen (EAWAG, Switzerland)

Detection and quantification of toxins produced by benthic cynobacteria

10:30-10:50

Coffee break

10:50-11:50

Hilary Snook (USEPA, USA)

New strategies in cyanobacterial monitoring

 

11:50-12:20

Margaux Corset (University of Neuchâtel, Switzerland)

Isolation and axenisation procedures for benthic cyanobacteria

 

12:20-13:30

Lunch break

13h30-14h15

Sami Zhioua, Margaux Corset

Detection of toxin-biosynthesis genes (results)

 

14h15-16h15

Pilar Junier, Hilary Snook

Discussion with students on the best mitigation strategies

Location

University of Neuchâtel, Room B104

Information
Expenses

Reimbursements for CUSO MPS Students:
Train ticket, 2°class, half-fare from your institution to the place of the activity 

Reimbursement of your travel tickets can be asked online through your MyCUSO.

Registration

Registration open

Deadline for registration: 23.08.24

Late cancellation or "no show" administration fee of 50.-

Places

15

Deadline for registration 23.08.2024
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