C The TIDE Project www.mbl.edu/tide Whole-ecosystem manipulations - PDF document

Ecosystem Services C

The TIDE Project www.mbl.edu/tide Whole-ecosystem manipulations in Plum Island Estuary, MA Target conc. NO 3 - : (70 uM; 1 mg/L) 15x reference creeks May – September, Since 2004 Reference Creek System – 8 Years after experiment began

Peat Fractures P <0.01 Green = Enriched Deegan et al. 2012 Nature

Fertilized Creek System – 7 Years after experiment began P = 0.07 E n r i c h e d Deegan et al. 2012 Nature

Spartina alterniflora Enriched Reference Top 20 cm P = 0.08 Deegan et al. 2012 Nature P = 0.02 Reference Enriched Deegan et al. 2012 Nature

Toupee Fewer Roots Source: Pennings 2012 Nature Whole marsh nutrient retention >Year 10 of Enrichment Year 2 of Enrichment Drake et al. 2009 - Ecology HYPOTHESES Reference Reference Low marsh intact Low marsh intact >90% retention >90% retention 3000 mol NO 3 - Fertilized Fertilized Low marsh intact Low marsh LOSS 55% retention < 55% retention 23,000 mol NO 3 -

(Fert/ref) Nelson and Deegan, in review

Thank you Collaborators Linda Deegan, Ph.D. John Fleeger, Ph.D. Scott Warren, Ph.D. Bruce Peterson, Ph.D. Sergio Fagherrazi, Ph.D. 15 others http://www.mbl.edu/tide/ For more information including publications and complete personnel list