uid=PIE,o=lter,dc=ecoinformatics,dc=org all public read LTE-MP-NIN-porewater.07 Plum Island Ecosystems LTER Program Jim Morris

Dept of Biological Sciences University of SC Columbia SC 29208 USA

Plum Island Ecosystems LTER Program Karen Sundberg

Baruch Marine Field Laboratory University of SC PO Box 1630 Georgetown SC 29442 USA

Plum Island Ecosystems LTER Program

The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole MA 02543 USA

(508) 289 7485 pie_im@mbl.edu http://ecosystems.mbl.edu/PIE/ Warren Hankinson additional investigator 2005 Nutrient concentrations from permanent porewater samplers in a Spartina alterniflora-dominated salt marsh in North Inlet, Georgetown, SC. There are six sites. Two sites are low marsh; four are high marsh. One site in the high marsh is fertilized with nitrogen and phosphorus. One site in the high marsh is located in a dieback. Sampling at the dieback site occurred from 2006-2010. LTER PIE Plum Island Ecosystems South Carolina North Inlet nutrients estuary salt marsh Spartina alterniflora porewater ammonium phosphate sulfide chloride iron Southeast United States Acceptance and utilization of PIE-LTER data requires that: The Principal Investigator be sent a notice stating reasons for acquiring any data and a description of the publication intentions. The Principal Investigator of the data set be sent a copy of the report or manuscript prior to submission and be adequately cited in any resultant publications A copy of any resultant publications should be sent to: Principal Investigator Ecosystems Center Marine Biological Laboratory Woods Hole, MA 02543 http://ecosystems.mbl.edu/PIE/data/LTE/LTE-MP-NIN-porewater.html North Inlet, Georgetown, SC -79.2 -79.19 33.35 33.32 1993-12-01 2011-12-31 Organisms Studied Genus Spartina Species alterniflora Collections occur every month. Database is updated once annually, usually in the winter. Study and data collection are ongoing as of Jan 2012. Version 01:July 11, 2006 Level 3+ EML using Jim Laundre's Excel program Version 02: January 10, 2007 data and metadata update Version 03: March 13, 2008 Data and metadata update Version 04: February 20, 2009 Data and metadata update Version 05: January 13, 2010 Data and metadata update Version 06: October 26, 2011 Data and metadata update Version 07: January 12, 2012, 2011 data and metadata update, using MarcrosExportEML_HTML (working)pie_excel2007.xlsm 1/12/12 11:51AM for QA/QC to EML 2.1.0 Data Manager

The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole MA 02543 USA

(508) 289 7485 pie_im@mbl.edu http://ecosystems.mbl.edu/PIE/ Plum Island Ecosystems LTER

The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole MA 02543 USA

(508) 289 7485 pie_im@mbl.edu http://ecosystems.mbl.edu/PIE/ Sampling Description: Triplicate porewater diffusion samplers are permanently installed on the marsh platform in fertilized (26.7 mol N/m2/y and 12.3 mol P/m2/y) or control plots in a Spartina alterniflora-dominated salt marsh in North Inlet, SC. Each sampler collects porewater from depths of 10, 25, 50, 75, and 100 cm. Samples are retrieved monthly. Porewater samples are either filtered (0.45 uM) or preserved with ZnAc (for sulfides) immediately upon return from the field. Lab Methods: Filtered porewater samples are analyzed for PO4, NH4, chloride and Fe (+2) concentrations according to standard laboratory protocols (Strickland and Parson 1972; Gibbs 1979). Unfiltered, preserved porewater samples are analyzed for sulfide (Cline 1969). Anne Giblin

The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole MA 02543 USA

(508) 289 7488 agiblin@mbl.edu Lead PI Hap Garritt

The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole MA 02543 USA

(508) 289 7485 pie_im@mbl.edu Information Manager The Plum Island Ecosystems (PIE) LTER is an integrated research, education and outreach program whose goal is to develop a predictive understanding of the long-term response of watershed and estuarine ecosystems at the land-sea interface to changes in climate, land use and sea level. The principal study site is the Plum Island Sound estuary, its coupled Parker, Rowley and Ipswich River watersheds and the adjacent coastal ocean, the Gulf of Maine. The PIE LTER focuses on how several aspects of global change influence organic matter and inorganic nutrient biogeochemistry and estuarine foodwebs. The inputs of organic matter and nutrients from land, ocean and marshes interact with the external drivers (climate, land use, river discharge, sea level) to dictate the extent and degree of nutrient and organic matter processing and determine the spatial patterns of estuarine productivity and trophic structure. This material is based upon work supported by the National Science Foundation under Grants OCE-9726921, OCE-0423565. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. The Plum Island Ecosystems (PIE) LTER site, is located in northeastern Massachusetts, 42.72 N, 70.85 W. The PIE LTER lies at the interface of a thinly soiled, formerly glaciated New England land mass and the highly productive Gulf of Maine. Three watersheds comprise the estuarine drainage basin: Parker (155 km2), Rowley (26 km2) and Ipswich (404 km2). The Ipswich River watershed is highly urbanized with Boston "bedroom" communities encroaching in the headwater region while the Parker is less urbanized and retains a higher proportion of forest. -71.2198 -70.7568 42.8276 42.4965 0 100 meter LTE-MP-NIN-porewater.csv Nutrient concentrations from porewater samples at Spartina alterniflora-dominated salt marsh plots in North Inlet, Georgetown, SC. LTE-MP-NIN-porewater.csv 1 \r\n column , http://ecosystems.mbl.edu/PIE/data/LTE/data/LTE-MP-NIN-porewater.csv SITE SITE name of sampling station GI Goat Island OL Oyster Landing DB Sixty Bass Dieback LOCATION LOCATION location of sampling station HM High Marsh LM Low Marsh YEAR YEAR year yyyy MONTH MONTH month mm TRT TRT treatment NP Fertilized C Control REP REP replicate replicate DEPTH DEPTH depth depth PO4 PO4 phosphate concentration (uM-P) micromolePerLiter real . .=not measured NH4 NH4 ammonium concentration (uM-N) micromolePerLiter real . .=not measured S2 S2 sulfide concentration (uM-S) micromolePerLiter real . .=not measured Cl Cl chloride concentration (gCl/l) gramPerLiter real . .=not measured Fe2 Fe2 iron (+2) concentration (uM-Fe+2) micromolePerLiter real . .=not measured COMMENTS COMMENTS Information pertaining to individual data points Information pertaining to individual data points µM = µmoles per liter of solution grams per liter