Mass Distribution of Mercury among Ecosystem Components in the Florida Everglades

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1 Mass Dstrbuto of Mercury amog Ecosystem Compoets the Florda Everglades Guaglag Lu, G. Melode Naja 2, Yog Ca, Peter Kalla 3, Da Schedt 3, Evely Gaser, Georgo Tachev, Davd Roelat : Florda Iteratoal Uversty 2 : Everglades Foudato 3 : US EPA Rego 4

2 Hg cotamato the Everglades Hg 2

3 Mercury Cyclg the Florda Everglades 3

4 Questo How much Hg s preset each ecosystem compoet the Everglades? 4

5 Objectve To establsh mass vetory for ad MeHg the four maagemet uts of the Everglades. WCA WCA 2 WCA 3 ENP 5

6 Method Mass vetory Iput Output Deposto Evaso Iflow Water Floc Mass Storage Perphyto Macrophyte Outflow Sol Fsh 6

7 7 Mass Storage (at samplg: Nov 2005) 3 0 ) ( A d C M SW SW SW π π 6 0 ) ( A BD d C M SD SD SD SD π π 6 0 ) ( A BD d C M FC FC FC FC π π A BM C M PE PE PE ) ( π π A BM W C M FS FS FS FS ) ( π π Water: Sol: Floc: Perphyto: Fsh: mass cocetrato Water volume cluso probablty A BM C M PE PE PE ) ( π π Macrophyte:

8 Iput (durg 2005 wet seaso: May-Nov) Deposto: deposto Wet deposto Dry deposto M M + BD WD M DD Iflows: Mea Coc Total water flows M IF IF C * V IF 8

9 Output (durg 2005 wet seaso: May-Nov) Evaso: M EV 2( g / m2 / h) *0( h / d )*80( d ) * A Maagemet ut Iflow Structures Outflow Structures Outflows: WCA WCA 2 WCA 3 ENP G30, G30, G300, G25, S362, S0, G94, S39, G30 ACME, ACME2 S0, S7, G335 S34, S38, S S, S8, S9, S40, S50, S90 S2, S3, S42, S333, S343, S344, G69 S2, S8, S74, S332, S333-S334 C, Taylor Rver Slough, Shark Rver Slough, Trout Mea Coc M OF OF C * Total water outflows V OF Creek, Taylor Creek, 9

10 Databases EPA Everglades R-EMAP (2005) MDN USGS ACME SFWMD DBHRDRO Others 0

11 26.6 LNWR 2005 R-EMAP 26.4 Lattude, decmal degrees ENP WCA 3 WCA 2 Ecosystem-wde samplg Probablty samplg desg Closed crcle: May, 09 Ope crcle: November, Logtude, decmal degrees

12 Results Deposto.4 Evaso 2.06 Iflow 0.27 (A) Water:.30 Floc: 9 Perphyto: 0.07 Sol (top 0 cm layer):784 Macrophyte: 9.94 Fsh: Outflow 0.88 Deposto 0.9 Evaso.96 WCA Iflow (B) Water:.56 Floc: 5 Perphyto: 0.64 Sol (top 0 cm layer): 05 Macrophyte: 5.98 Fsh: Outflow WCA 2 mass (kg) vetory 2

13 Iflow 3.0 (C) Deposto 47 Water: 4.2 Evaso 8.5 Floc: 577 Perphyto: 2.2 Sol (top 0 cm layer): 4302 Macrophyte: 46 Fsh: 0.89 Outflow 2.5 Deposto 67 Evaso 2 WCA 3 Iflow 2.7 (D) Water: 2.6 Floc: 47 Perphyto: 4 Macrophyte: 35 Outflow 0.34 mass (kg) vetory Sol (top 0 cm layer): 738 Fsh: 0.96 ENP 3

14 mass (kg) vetory Compartmet I (kg) Out (kg) Total accumulated (kg) Legacy Hg (kg) Legacy Hg / area (g/m2) WCA WCA WCA ENP Legacy Hg s huge Sol ad floc are ma sks trasport s lmted Iputs > outputs 4

15 Iflow (A) Water: 0.9 Floc: 4.53 Perphyto: Macrophyte: 0.70 Outflow Sol (top 0 cm layer):9.84 Fsh: WCA Iflow 0.26 (B) Water: 0.22 Floc: 2.33 Perphyto: 0.06 Macrophyte: 0.42 Outflow 0.09 MeHg mass (kg) vetory WCA 2 Sol (top 0 cm layer): 3.75 Fsh:

16 Iflow 0.36 (C) Water: 0.43 Floc: 9.65 Perphyto: 0.5 Macrophyte: 3.22 Outflow 0.9 Sol (top 0 cm layer): 8.6 Fsh: 0.89 WCA 3 Iflow 0.20 (D) Water: 0.30 Floc: 3.9 Perphyto: 4.32 Sol (top 0 cm layer): 40.4 Macrophyte: 2.48 Fsh: 0.96 Outflow ENP MeHg mass (kg) vetory 6

17 MeHg mass (kg) vetory Compartmet I (kg) Out (kg) Accumulated (kg) Legacy (kg) Legacy MeHg / area (g/m2) WCA WCA WCA ENP Large legacy MeHg Sol, floc, ad macrophyte are ma sks Trasport across maagemet ut may be lmted, except for WCA 2 7

18 Ucertaty - WCA WCA 2 WCA 3 ENP Water Mass storage (kg) Ucertaty (%) Sol Mass storage (kg) Ucertaty (%) Floc Mass storage (kg) Ucertaty (%) Perphyto Mass storage (kg) Ucertaty (%) Mosqutofsh Mass storage (kg) Ucertaty (%)

19 Ucertaty - MeHg WCA WCA 2 WCA 3 ENP Water Mass storage (kg) Ucertaty (%) Sol Mass storage (kg) Ucertaty (%) Floc Mass storage (kg) Ucertaty (%) Perphyto Mass storage (kg) Ucertaty (%)

20 Summary Everglades s a sk for Hg, wth Hg legacy WCA, WCA2, WCA3 ad ENP beg 749 kg, 250 kg, 3920 kg ad 9340 kg, respectvely. Dfferet patters mass storage betwee ad MeHg : Sol >> floc MeHg: Sol > floc > macrophyte Trasport of Hg across regos plays a lmted role Hg cyclg, except for WCA 2 20

21 Ackowledgemets EPA Offce of Research ad Developmet US EPA Rego 4 Army Corps of Egeers Natoal Park Servces Florda Departmet of Evrometal Protecto Everglades Foudato Departmet of Eergy Mercury Laboratory (SERCMLAB) at FIU Battelle Mare Scece Laboratory 2

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