Acceptance and utilization of LTER data requires that:
(1) The Principal Investigator be sent a notice stating reasons for acquiring any data and a description of the publication intentions.
(2) 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.
(3) A copy of any resultant publications should be sent to:
Principal Investigator
Ecosystems Center
Marine Biological Laboratory
7 MBL St.
Woods Hole, MA 02543
| Dataset URLs: | METADATA: HTML, Rich Text, XML(EML compliant) DATA: Comma Delimited, Excel file with Metadata and data |
| Dataset ID: | MAR-VA-Porewater.01 |
| Dataset Title: | Porewater nutrient concentration data [SRP, NH4+, S-2, Cl-] from several sites along the Rowley and Parker Rivers, MA and Wells NEER, ME. |
| Investigator 1: | |
| First Name: | Jim |
| Last Name: | Morris |
| Address line 1: | Dept of Biological Sciences |
| Address line 2: | |
| Address line 3: | University of SC |
| City: | Columbia |
| State: | SC |
| Zip Code: | 29208 |
| Country: | USA |
| Associate Investigators: | Robert J. Daoust |
| Keywords: | Spartina alterniflora, Spartina patens, Typha, macrophyte, ammonium, chloride, sediment, marsh, phosphorus, sulfide, salinity, porewater |
| Abstract: | Porewater nutrient concentration data [SRP, NH4+, S-2, Cl-] from several sites along the Rowley and Parker Rivers, MA and Wells NEER, ME. |
| Contact: | Plum Island Ecosystems LTER Information Manager The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole, MA 02543 Phone (508) 289 7485 Email: pie_im@mbl.edu Online URL: http://ecosystems.mbl.edu/PIE/ |
| DATA FILE INFORMATION: | |
| Data File URL | http://ecosystems.mbl.edu/PIE/data/MAR/data/MAR-VA-Porewater.dat |
| Data File Name | MAR-VA-Porewater |
| Beginning Date | 11/1/1998 |
| End Date | 10/26/2000 |
| Number of Data Records | |
| Other Files to Reference | |
| Availability Status | Type 1 |
| Quality Control Information | |
| Maintenance Description | |
| Log of Changes: | |
| RESEARCH LOCATION: | Site 1 |
| Geographic Description | LTE-MP-LPA |
| Location Bounding Box | |
| West Bounding Coordinate | |
| East Bounding Coordinate | |
| North Bounding Coordinate | |
| South Bounding Coordinate | |
| OR if single point location | |
| Latitude | 42.73174171 |
| Longitude | -70.84247191 |
| Methods: | Porewater is sampled monthly from May through November and bi-monthly from December though April using diffusion samplers. Samples are retrieved from triplicate poles at depths of 10, 25, 50, 75, and 100 cm. Soluble reactive phosphorus, NH4, S2, and chloride concentrations are measured in each sample according to standard laboratory protocols (SRP and NH4 – Strickland and Parson (1972); S2 – Otte and Morris (1994)). NOTES AND COMMENTS: MAR-RO-MorrisTr discontinued on 7/1/99. LTE-MP-LPP began in May 99. LTE-MP-ORT began in May 00. TYC1 and TY11 are the same sampling pole. REFERENCE CITATIONS: Otte, M. L. and J. T. Morris (1994). Dimethylsulphoniopropionate (DMSP) in Spartina alterniflora Loisel. Aquatic Botany 48:239-259. Strickland, T. D. and T. R. Parsons. 1972. A Practical Handbook of Seawater Analysis. Fisheries Research Board of Canada, Ottawa, Ontario, Canada. Locations of Porewater Peepers. (Please note that stations were renamed to fit with the PIE-LTER station naming protocol. Previous names are listed in the table below for reference.) LTE-MP-LPA = Law’s Point low marsh (Spartina alterniflora dominated) plot-level marsh fertilization experimental site LTE-MP-LPP = Law’s Point high marsh (Spartina patens dominated) plot-level marsh fertilization experimental site LTE-MP-ORT = Upper Parker River Typha sp. dominated marsh plot-level marsh fertilization experimental site MAR-RO-LawTr = Law’s Point transect, 100 m from creekbank inland, Loc for this site corresponds to meters from creekbank MAR-RO-MorrisTr = Morris Island transect MAR-PR-PD = Freshwater marsh immediately behind the Parker River Dam MAR-WM-Little = Wells, ME NEER site along Little River CURRENT STATION NAME Previous Name LAT LON LTE-MP-LPA LPA 42.73174171 70.84247191 LTE-MP-LPP LPP 42.75673837 70.91771675 LTE-MP-ORT TY 42.73095384 70.84291486 MAR-RO-LawTr LP MAR-RO-MorrisTr MI MAR-PR-PD PD MAR-WM-Little WM |
| Variable Name | Variable Description | Units | Measurement Scale | Code Infomation | Number Type | DateTime Format | Missing Value Code | Missing Value Code Explanation |
| YR | Year of sample collection | datetime | yyyy | blank cell | ||||
| MTH | Month of sample collection | datetime | mm | blank cell | ||||
| DAY | Day of sample collection | datetime | dd | blank cell | ||||
| SIT | Site of sample collection | nominal | blank cell | |||||
| LOC | Sample location, in many cases this depends completely on sample site | nominal | CK = creek surface water sample | RT = water collected while draining from creekbank | PD = pond surface water sample | Numbers > 3 = a distance in meters along a transect with 0 m located at the creekbank | Numbers (1,2,3) = a position along an unsurveyed transect | C = samples collected at experimental sites from control unfertilized plots | F = samples collected at experimental sites from N+P fertilized plots | blank cell | ||||
| REP | Replicate number, in some case diffusion sampler are set alone (1 rep), in pairs (2 reps), or in triplicates (3 reps) | nominal | blank cell | |||||
| DPT | Sample depth (10, 25, 50, 75, 100) 0 = surface water sample | centimeter | ratio | real | blank cell | |||
| SRP | soluble reactive phosphorus concentration, uM-P | microMolesPerLiter | ratio | real | blank cell | |||
| NH4 | ammonium concentration, uM-N | microMolesPerLiter | ratio | real | blank cell | |||
| S2 | sulfide concentration, uM-S | microMolesPerLiter | ratio | real | blank cell | |||
| Cl | chloride concentration | gramsPerLiter | ratio | real | blank cell | |||
| SAL | salinity | percent | ratio | real | blank cell |