8 spectrolysers to be deployed (Sept 2012) in upland mid-Wales

As part of a £3M NERC BESS project (2012-2015)

calledDiversity in Upland Rivers for Ecosystem Service SustainabilityDURESS

Isabelle Durance (Cardiff University) Overall PINick Chappell (Lancaster University) Lancaster PI & responsible for WP4: physicochemical controls on aquatic biodiversityTim Jones (Lancaster University) Field PDRADavid Norris (CEH-Bangor) Field staff

Llyn Brianne (5 streams)

LI3 (Nant y Craflwyn) LI6 (Nant Gwrâch – eastern) LI7 (Nant Gwrâch – southern)

LI8 (Trawsnant) G1 (Nant Melyn tributary)

Llyn Brianne (5 streams)

Plynlimon & Pontbren (3 streams)

Hafren (Plynlimon) Gwy (Plynlimon) Pontbren (nr Welshpool)

Installation 10th Sept 2012 onwards

Water quality stations

S::CAN spectro::lyserTM

ISCO3700 water sampler

Hach SC200 pH system

CS547A EC-Temp sensor

OBS-3+ & Hydrowiper turbidity sensor (6/8)

CR1000 logger

Captrad GRP cabinet

Water-level stations (DOC, POC, nitrate etc load)

Raingauges & automatic weather stations

S::CAN spectro::lysersTM

7x 35mm Optical Path LengthFor streams typically 1-10 mg/L DOC

1x 5mm Optical Path LengthFor Pontbren stream (Pen-y-cwm) typically 10-20 mg/L DOC

Nick Chappell, Sept 2012