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What can lake buoys tell us about a once in 250 year rainfall event – case study from Lough Feeagh Elvira de Eyto, Mary Dillane, Liz Ryder, Karin Sparber,

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Presentation on theme: "What can lake buoys tell us about a once in 250 year rainfall event – case study from Lough Feeagh Elvira de Eyto, Mary Dillane, Liz Ryder, Karin Sparber,"— Presentation transcript:

1 What can lake buoys tell us about a once in 250 year rainfall event – case study from Lough Feeagh Elvira de Eyto, Mary Dillane, Liz Ryder, Karin Sparber, Eleanor Jennings and Russell Poole Gleon Wisconsin October 2009

2 Rainfall on 2 nd July 2009

3 LodgeGaulaunBuckaghRough 2MillraceRough 3BlackMaumerattaNamaroon 2 nd July Total 64.846.860.856.452.942 30.8 40 2 hours 52.435.250.447.641.834.43224.633.2 250 year return time for 2 hourly rainfall of > 44.7 mm

4 Black river Rough river (daily maximum water levels)

5 Rough River 3-7-2009

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8 Feeagh Harbour

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11 Nephelometer for 2004 – 2009 for context

12 Chlorophyll a µg l -1 flood

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17 But what about the microbial loop?? Not sure yet

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19 Longevity of sediment readings – how long to get back to baseline? Effects on the microbial loop Effects on stratification/thermocline (at the moment looks like nothing really changed Effects on metabolism Effect on Lough Furnace Write it up maybe after a full annual cycle Any ideas about what we might look for / additional analysis Thanks to Gleon and the Gordon and Betty Moore Foundation


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