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-RO-Transects.02 | |||||||||||||||
| Dataset Title: | Marsh vegetation and sediment characteristics at three sites along five transects in the Rowley River Estuary Marsh during 1998 | |||||||||||||||
| Investigator 1: | ||||||||||||||||
| First Name: | Charles | |||||||||||||||
| Last Name: | Hopkinson | |||||||||||||||
| Address line 1: | Ecosystems Center | |||||||||||||||
| Address line 2: | MBL | |||||||||||||||
| Address line 3: | 7 MBL St | |||||||||||||||
| City: | Woods Hole | |||||||||||||||
| State: | MA | |||||||||||||||
| Zip Code: | 02543 | |||||||||||||||
| Country: | USA | |||||||||||||||
| Associate Investigators: | Catherine Schmitt, Nat Weston | |||||||||||||||
| Keywords: | PIE LTER, primary production, organic matter, inorganic nutrients, marsh, vegetation, biomass, density, organic, ammonium, vegetation, bulk, porosity, sediment | |||||||||||||||
| Abstract: | Marsh vegetation and sediment characteristics at three sites along five transects | |||||||||||||||
| 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/ |
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| DATA FILE INFORMATION: | ||||||||||||||||
| Data File URL | http://ecosystems.mbl.edu/PIE/data/MAR/data/MAR-RO-TRANSECTS.dat | |||||||||||||||
| Data File Name | MAR-RO-TRANSECTS | |||||||||||||||
| Beginning Date | 1/1/1998 | |||||||||||||||
| End Date | 12/31/1998 | |||||||||||||||
| Number of Data Records | 15 | |||||||||||||||
| Other Files to Reference | MAR-RO-Sedimentation.xls | |||||||||||||||
| Availability Status | Type 1 | |||||||||||||||
| Quality Control Information | ||||||||||||||||
| Maintenance Description | ||||||||||||||||
| Log of Changes: | Version 01, initial Excel metadata template | |||||||||||||||
| Version 02, 21Jan2010 keyword update | ||||||||||||||||
| RESEARCH LOCATION: | Site 1 | Site 2 | Site 3 | Site 4 | Site 5 | Site 6 | Site 7 | Site 8 | Site 9 | Site 10 | Site 11 | Site 12 | Site 13 | Site 14 | Site 15 | |
| Geographic Description | MAR-RO-1.1 | MAR-RO-1.2 | MAR-RO-1.3 | MAR-RO-2.1 | MAR-RO-2.2 | MAR-RO-2.3 | MAR-RO-3.1 | MAR-RO-3.2 | MAR-RO-3.3 | MAR-RO-4.1 | MAR-RO-4.2 | MAR-RO-4.3 | MAR-RO-5.1 | MAR-RO-5.2 | MAR-RO-5.3 | |
| Location Bounding Box | ||||||||||||||||
| West Bounding Coordinate | ||||||||||||||||
| East Bounding Coordinate | ||||||||||||||||
| North Bounding Coordinate | ||||||||||||||||
| South Bounding Coordinate | ||||||||||||||||
| OR if single point location | ||||||||||||||||
| Latitude | 42.73124641 | 42.73044391 | 42.73010427 | 42.72927524 | 42.72937808 | 42.72944309 | 42.7315672 | 42.73114989 | 42.73073701 | 42.72164579 | 42.72102267 | 42.72012316 | 42.72735083 | 42.72786435 | 42.72826021 | |
| Longitude | -70.82633015 | -70.82674205 | -70.82689935 | -70.83476712 | -70.83554343 | -70.83600791 | -70.84149728 | -70.84213437 | -70.84278369 | -70.84739211 | -70.84752722 | -70.84773538 | -70.85227181 | -70.85242278 | -70.8525282 | |
| Elevation | ||||||||||||||||
| TAXONOMIC COVERAGE: | |
| Taxonomic Protocols | |
| Organisms studied | |
| Methods: | Relative elevation of the sites were determined by near-simultaneous water depth measurement at slack high tide. Vegetation biomass and density were measured at each station by clipping all vegetation within duplicate quadrats (0.25 m2 for alterniflora, 0.1 m2 for patens), and counting and weighing the stems. Maximum vegetation height was measured in the field. Marsh sediment cores were obtained for sediment characteristics. Sediment NH4 was determined by a KCl extraction (see ANALYTICAL METHODS). Sediment bulk density was determined by dry weight of a known volume of sediment. Sediment organic matter was measured by weight loss on combustion of sediment to 500 °C. |
| Variable Name | Variable Description | Units | Measurement Scale | Code Information | Number Type | DateTime Format | Missing Value Code | Missing Value Code Explanation |
| STATION | sampling station (transect.site) | nominal | blank cell | |||||
| STATE X | x coordinates (meters) in MA state plane NAD 83 | meter | interval | real | blank cell | |||
| STATE Y | y coordinates (meters) in MA state plane NAD 83 | meter | interval | real | blank cell | |||
| LAT | Latitude in NAD 83 geographic coordinates (decimal degrees) | degree | interval | real | blank cell | |||
| LON | Longitude in NAD 83 geographic coordinates (decimal degrees) | degree | interval | real | blank cell | |||
| DIST | distance from tidal creek along transect (m) | meter | interval | real | blank cell | |||
| ELEV | relative elevation of marsh surface (cm) | centimeter | ratio | real | blank cell | |||
| VEG | dominant vegetation type | nominal | alterniflora = Spartina alterniflora | short alterniflora = Spartina alterniflora short-form | patens = Spartina patens | blank cell | ||||
| DEN | vegetation density (m-2) | squareMeter | ratio | real | blank cell | |||
| DEN SE | standard error of the density measurements | squareMeter | ratio | real | blank cell | |||
| BIO | vegetation biomass (g m-2) | gramsPerSquareMeter | ratio | real | blank cell | |||
| BIO SE | standard error of the biomass measurements | gramsPerSquareMeter | ratio | real | blank cell | |||
| HT | maximum height of vegetation (cm) | centimeter | ratio | real | blank cell | |||
| HT SE | standard error of height measurements | centimeter | ratio | real | blank cell | |||
| NH4 | sediment porewater + exchangeable ammonium to 50 cm (µmols N cm-3) | microMolesPerCubicCentimeter | ratio | real | blank cell | |||
| POR | sediment porosity to 50 cm (g cm-3) | gramsPerCubicCentimeter | ratio | real | blank cell | |||
| BD | sediment bulk density (g dry weight cm-3) | gramsPerCubicCentimeter | ratio | real | blank cell | |||
| % OM | percent organic content of the sediment to 50 cm | percent | ratio | real | blank cell |