Bootheel Region The Lakes of Misouri Volunteer Program布希尔区密苏里志愿者的项目的湖泊

1、follow up from the last nutrient criteria meetingdan obrecht umc limnologybootheel regionthe region is also referred to as the mississippi alluvial plains region. five missouri counties are entirely within the region with another six counties being partially in the region. elevation in the region ra

2、nges between 240 to 335 feet above sea level, with the exception of isolated ridges that rise above the alluvial plain. how many classified lakes/reservoirs? dunklin 0 new madrid 0 mississippi 5 pemiscot 2 stoddard 9based on 2005 listmu datasecchi(meters)tp(g/l)tn(g/l)chl(g/l)iss(mg/l)delaney0.29332

3、2050189.63.50big oak0.474253012.40.53both lakes sampled in 2001 and 2002delaney lake mississippi co.110 acresbig oak mississippi co.22 acresother mississippi alluvial plains waterbodiesdexter city lakestoddard county11 acrescombs lakepemiscot co.not classified150 acreshalls lake crowleys ridge casto

4、ddard county50 acresnot classifiedhow do we deal with lakes and reservoirs in the mississippi alluvial plains?sample size?020406080100120mean tp (ug/l)05101520number of samplesspring-fallp=0.10p=0.15p=0.20p=0.25p=0.30020406080100120mean tp (ug/l)1234567number of samplesp=0.10p=0.15p=0.20p=0.25summer

5、how many samples to take?parametertotal nitrogentotal phosphoruschlorophyllprecision15%25%15%25%15%25%summer3131104spring-fall4272186large reservoir - spatial variabilitytable rock lake2005 average tp5725347631144819bull shoals lake little north fork arm261362005 average tp7long branch lake272402592

6、005 average tpstockton lake2004 average tp2953302010050100150miles from main lake channel0srp (ug/l)james river armkings river arm5101520253040302010lake bottomsurfacehigh conductivitylow conductivitymiles from main lakedepth (meters)james river arm - march 1, 2000james river arm - march 1, 20015101520253035252015105james river arm - august 3, 2000depth (meters)mil