Short Citation:
Office for Coastal Management, 2021: Delaware Bay, Delaware Benthic Grabs 2007, https://www.fisheries.noaa.gov/inport/item/47866.

Item Identification

Title: Delaware Bay, Delaware Benthic Grabs 2007
Short Name: de_db07_benthos-meta
Status: Completed
Publication Date: 2012
Abstract:

The Coastal Program of Delaware's Division of Soil and Water conservation (DNREC), the University of Delaware, Partnership for the Delaware Estuary, and the New Jersey Department of Environmental Protection have partnered and are carrying out a bottom and sub-bottom imaging project to identify and map the benthic habitat and sub-bottom sediments of Delaware Bay and River. This project was initiated to better understand the distribution of bottom sediment types, habitat biodiversity, and most importantly, human's impact on the bay bottom and its living resources. The project integrates the use of three types of acoustical systems: Roxann Seabed classification system, chirp sub-bottom profiling, and multi-beam bathymetric mapping. Verification of the acoustic data with bottom and sub-bottom sediments is performed through the collection of bra banc core samples and underwater video images.

Original contact information:

Contact Name: Bartholomew Wilson

Contact Org: DNREC Delaware Coastal Programs

Phone: 302-739-9283

Purpose:

This layer contains all the locations where sediment grab samples were retrieved that contained the tube building polychaete Sabellaria vulgaris.

The bottom sediment data and maps that was collected through the sediment sampling were collected and constructed to aid in the identification of essential fish Habitat (EFH), identify locations of potential borrow sites for beach replenishment, identify important locations for marine protection areas, and aid in the assessment of sediment dynamic of Delaware River and Bay.

Notes:

10023

Supplemental Information:

The Delaware Bay benthic grabs were focused on identifying the presence of the tube-building annelid sabellaria vulgaris.

Keywords

Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Science Keywords Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Benthic
Global Change Master Directory (GCMD) Science Keywords Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Coastal
Global Change Master Directory (GCMD) Science Keywords Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Estuary
ISO 19115 Topic Category environment
None Environment Monitoring

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords Continent > North America > United States Of America > Delaware
None Delaware
None Delaware Bay
None USA

Physical Location

Organization: Office for Coastal Management
City: Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: None Planned
Distribution Liability:

NOAA manages much of the data to users of digital geographic data.NOAA is in no way condoning or endorsing the application of this data for any given purpose.It is the sole responsibility of the user to determine whether or not the data is suitable for the intended purpose.It is also the obligation of the user to apply the data in an appropriate and conscientious manner.NOAA provides no warranty,nor accepts any liability occurring from any incomplete,incorrect, or misleading data, or from any incorrect,incomplete, or misleading use of the data.Much of the data is based on and maintained with ARC/GIS software developed by the Environmental Systems Research Institute (ESRI).In addition, much of the information presented uses conventions and terms popularized by ARC/GIS and its user community. NOAA in no way represents the interests of ESRI,nor acts as agents for them.

Data Set Credit: Bartholomew Wilson P.G., DNREC Delaware Coastal Program Bartholomew.Wilson@state.de.us John Madsen Ph.D., University of Delaware Geosciences Department jmadsen@udel.edu

Support Roles

Data Steward

CC ID: 610235
Date Effective From: 2012
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Distributor

CC ID: 610237
Date Effective From: 2012
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Metadata Contact

CC ID: 610238
Date Effective From: 2012
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Point of Contact

CC ID: 610236
Date Effective From: 2012
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 610241
W° Bound: -75.4567
E° Bound: -75.247593
N° Bound: 39.351757
S° Bound: 38.890727

Extent Group 1 / Time Frame 1

CC ID: 610240
Time Frame Type: Range
Start: 2004
End: 2007

Spatial Information

Spatial Representation

Representations Used

Vector: Yes

Access Information

Security Class: Unclassified
Security Classification System:

None

Security Handling Description:

No specific security handling procedures needed.

Data Access Constraints:

None

Data Use Constraints:

Public Information. This data should be used for resource mapping and comparison purposes only. While every effort has been made to ensure that these data are accurate and reliable within limits of the state of the art, the State of Delaware and the Delaware Coastal program will not assume any liability for damages caused by any inaccuracies in these data, or failure in their use.

Distribution Information

Distribution 1

CC ID: 750271
Download URL: ftp://ftp.coast.noaa.gov/pub/benthic/Grab_Sample_Data/DE_DelawareBay_benthos.zip
Distributor:
File Name: Bulk Download
Description:

FTP download of data files.

URLs

URL 1

CC ID: 750273
URL: https://coast.noaa.gov/
Name: NOAA's Office for Coastal Management (OCM) website
URL Type:
Online Resource
Description:

Information on the NOAA Office for Coastal Management (OCM)

Activity Log

Activity Log 1

CC ID: 610252
Activity Date/Time: 2017-03-30
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 610251
Activity Date/Time: 2017-11-14
Description:

Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details.

Activity Log 3

CC ID: 750272
Activity Date/Time: 2018-04-11
Description:

Partial upload to move data access FTP links to Distribution Info and remove broken URLs.

Technical Environment

Description:

Microsoft Windows Server 2008 R2 Version 6.1 (Build 7600) ; ESRI ArcGIS 10.0.0.2414

Data Quality

Completeness Report:

Only oyster reef and unconsolidated bottom areas were sampled.

Conceptual Consistency:

Ground truth information was collected at the time of the original surveys. In some cases, several grabs were made in the same general area to confirm the presence of a specific habitat.

Lineage

Process Steps

Process Step 1

CC ID: 610229
Description:

In the entire survey area in the Delaware River and Bay, over 600 sediment grab samples were collected for the bottom sediment verification and calibration of the Roxann sediment box plot . Samples were collected using a Petit Ponar, which has a sample opening of 6 inches x 6 inches, with a total sampling area of 36 in2. The petite ponar is a spring loaded sampler which pivots on an axis and when it encounters the bottom the retrieval rope is pulled and the ponar swings shut. The ponar will retrieve 2 to 6 inches, in depth, of sediments (depending on sediment type, harder and coarse sediments will constrict the ponar's penetration into the bottom). The retrieved sediment samples are then placed in a sampling bin and qualitatively described, noting the dominant sediment types, color, and sediment grain properties (sorting, grain maturity, and grain shape). Interesting features such as organic content (depending on sediment color), shell content and type, and anthropogenic debris are also recorded. Any organisms present are documented and these grab samples are then analyzed for their percentage abundances of sand, silt, and clay to determine sediment type. The sediment types are then correlated with their associated Roxann roughness and hardness clusters. Thus, the Roxann clusters can be used to develop a classification scheme for the sea floor.The box plot scheme used to classify the Roxann data for the bay an river areas are the current Delaware Bay benthic mapping project box plot which was constructed and verified by 540 grab samples collected during the 2004 thru 2008 field seasons. Sediment grab samples are collected from each ~ 5 sq. nautical miles (nm) field area (after the surveying has been completed) to verify any localized or regional differences that might cause variations in the clustering of the sediment classification.The roxann acoustic data was collected in a gridded trackline configuration, with tracklines spacing of 100 meters parallel to the shoreline and 200 meters perpendicular to the shoreline.This project is an extension of the work currently being performed in Delaware waters by DNREC's Delaware Coastal Program's Delaware Bay Benthic Mapping Project.

Process Date/Time: 2008-01-01 00:00:00

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity (ENT) de_db07_benthos

Catalog Details

Catalog Item ID: 47866
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-14 12:57+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2019-07-02 15:17+0000
Metadata Record Published: 2018-04-11
Owner Org: OCM
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Next Review Date: 2019-04-12