Mary Kelly Quinn

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    21-Jul-2015

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  • The importance and vulnerability of our small

    stream network

    Mary Kelly-Quinn, UCD. Email: mary.kelly-quinn@ucd.ie

  • Almost 77% of the river network in Ireland comprises first and second order streams

    Represented by just over 10% of sites in the EPA

    monitoring programme

    See: McGarrigle, M. (2014) Assessment of small water bodies in Ireland. Biology and Environment: Proceedings of the Royal Irish Academy 114B, 119-128. Special Issue on Small Water Bodies.

  • Why consider small streams? Small stream capture considerable volume of water Influence water quality in downstream reaches Spawning and nursery area for salmonids

  • Important in terms of catchment biodiversity. Up to 29% of aquatic macroinvertebrate species are unique to headwaters function of stream heterogeneity

    Support species common to further downstream

    Number of taxa unique (blue)to each distance and common to various distances (Rivers Bilboa, Mulkear & Tar)

    For more detail see: Callanan, M., Baars, J-R. & Kelly-Quinn, M. (2014) Macroinvertebrates of Irish headwater streams: contribution of catchment biodiversity. Biology and Environment: Proceedings of the Royal Irish Academy 114B, 143-162. Special Issue on Small Water Bodies

  • Some headwater areas are species-rich & may in the future be extremely important sink populations.

    From: Feeley, H.B. & Kelly-Quinn, M. (2012) An evaluation of local and regional diversity of benthic macroinvertebrate communities in two small regions of Ireland and their potential refugia for certain taxonomic groups. Biology and Environment: Proceedings of the Royal Irish Academy 112B, 1, 43-54.

  • Stressors on small streams Particularly vulnerable to pollution Narrow channel high land-water interface Low dilution capacity

    Point & diffuse pollution Chronic & acute Multiple pressures

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    April 10May 10June 10 July 10 Oct 10 Feb 11 May 11 July 12

    MRP

    (mg/

    l)

    Sampling period

    G1

    G2

    G3

    G4

    G5

    G6

    Gortinlieve Catchment, Donegal Data from: Pathways Project 0.0

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    April 10 May 10 June 10 July 10 Oct 10 Feb 11 May 11 July 12

    Nitr

    ate

    (mg/

    l N)

    Sampling period

    G1

    G2

    G3

    G4

    G5

    G6

  • Lowland streams

    Spring Summer Autumn Winter Spring

    GoodModeratePoor Glen Burn Stream Pathways Project

    Nutrient & Sediment Inputs

  • River Ow, Wicklow From: Hydrofor Report (J. Clarke)

    Upland streams

    Sites in west of Ireland Hydrofor Project See: Feeley, H.B., Bruen, M., Blacklocke, S. Baars & Kelly-Quinn, M. (2013) Science of the Total Environment 443, 173-183.

  • Richness

    Abundance

    Cha

    nge

    in w

    ater

    leve

    l(cm

    ) 24th Oct. 2011

    See: Feeley, H.B., Davis, Stephen, Bruen, M. Blacklocke, M. & Kelly-Quinn, M. (2012) Journal of Limnology, 71, 2, 309-318.

  • Editors: M. Kelly-Quinn & J-R Baars Thanks to EPA for sponsorship

    Available online December 10th

    Increase awareness Boots on the ground Target research to address

    knowledge gaps

    Extent of Small Streams Risk Score monitoring in support of Characterisation and development of the WFD monitoring programme during 20052006.

    Action needed

    Slide Number 1Slide Number 2Why consider small streams?Slide Number 4Slide Number 5Stressors on small streamsLowland streamsUpland streamsSlide Number 9Action needed

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