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

ExStream System Ireland

Details coming soon

No opening for TA in 2019

No opening for TA in 2018

Name
ExStream System Ireland
Legal name of organisation
Trinity College Dublin
Country
Ireland
Continent
Europe
Organisation address

College Green
Dublin
2

Primary contact information (PI)

Assoc. Prof. Mary Kelly-Quinn

ExStream network coordinator Asst. Prof. Jeremy J. Piggott

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Years of Mesocosm Experiments
2016 present
Description of Facility

The ExStream System comprises 128 circular stream mesocosms offering strict control of experimental variables, excellent statistical power and a high degree of realism, such as permitting natural immigration and emigration of stream organisms (invertebrates, algae and microbes) and achieving the same ambient temperature, light conditions and water chemistry as the adjoining river/stream. The mesocosms are arranged in eight blocks of 16 units each, and each of these blocks is continuously supplied by stream water gravity-fed from one of eight header tanks via 16 individual supply pipes.

The facility is mobile, currently housed in University College Dublin.

The Experimental Stream mesocosm network (ExStream) comprises replicate installations in New Zealand, China, Japan, Germany and Ireland and is coordinated by Asst. Prof. Jeremy J. Piggott at Trinity College Dublin (jeremy.piggott@tcd.ie).  

Controlled Parameters

Flow, can manipulate nutrient, sediment and other stressors

Research Topics

Impact of multiple stressors & climate change on aquatic communities and ecosystem processes

Facility location(s)
Primary interests

Stream biodiversity and ecosystem function

Specialist areas

Multiple stressors and climate change

Source of Information
Photos of experiments/installations

Photo credit: Matthew Rose-Nel
Photo credit: Matthew Rose-Nel
Figure credit: Jeremy (Jay) Piggott

TA

Infrastructure (short name)
ExStream System Ireland
Installation (short name)
Location

Wicklow Mountains, Co. Wicklow, Ireland

Coordinates / (routes, areas if non-static)
Water / environmental conditions
Depths / bottom / surface
Description

Description of the infrastructure: The ExStream System Ireland comprises 128 circular stream mesocosms offering strict control of experimental variables, excellent statistical power and a high degree of realism, such as permitting natural immigration and emigration of stream organisms (invertebrates, algae and microbes) and achieving the same ambient temperature, light conditions and water chemistry as the adjoining river/stream. The mesocosms are arranged in eight blocks of 16 units each, and each of these blocks is continuously supplied by stream water gravity-fed from one of eight header tanks via 16 individual supply pipes. The ExStream System Ireland can manipulate water temperature, nutrient concentrations, current velocity, flow, light/shade and substratum among other variables. It is particularly well- suited to full-factorial or gradient response experiments of one or more experimental factors. The system has been used successfully in several major experiments, including manipulations of nutrients, sediment and water temperature simulating climate-change and land-use scenarios.

The ExStream System Ireland (b) Mesocosm with emergence hood (c) with emergence hood removed (d) Drift capture nets (e) Schematic of the experimental set-up (f) Individual mesocosm.
Instruments / sensors / equipment
Modality of access

Modality of access under AQUACOSM-plus: At least 300 person-days in total will be allocated to external users supported by an AQUACOSM TA activity anticipated in M22-33. A minimum of 5 visiting scientists over 60 days per year are welcome to join ongoing experiments. ExStream experiments usually comprise a 1-month colonisation period, followed by a 1-month manipulative period requiring intensive hands-on effort and long days at the facility.

Unit of access

Persondays

What is available and when
What service and support facilities are available

Services currently offered by the infrastructure: Users have access to offices and laboratories in the Trinity Centre for the Environment including analytical equipment to process a wide variety of ecological and environmental materials. On-campus accommodation is available with Camper and/or BnB options close to the mesocosm facility. The ExStream System Ireland is the Irish installation in the ExStream Global mesocosm network comprising replicate installations in New Zealand, China, Japan, Germany and Ireland and can thereofore provide exceptional knowledge, expertise and international collaborative connections in stream mesocosm research.

Support offered under AQUACOSM-plus: Users will have access to offices and the laboratories and equipment described above. Users will be supported by a dedicated facility manager throughout their stay to facilitate coordination with other scheduled experiments and transport to/from the facility to the University campus.

Accommodation

None

Special rules