Delaware Bay, Delaware Benthic Grabs 2007
Data Set (DS) | Office for Coastal Management (OCM)GUID: gov.noaa.nmfs.inport:47866 | Updated: May 30, 2023 | Published / External
Summary
Short Citation
Office for Coastal Management, 2024: Delaware Bay, Delaware Benthic Grabs 2007, https://www.fisheries.noaa.gov/inport/item/47866.
Full Citation Examples
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
Distribution Information
-
FTP download of data files.
None
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.
Controlled Theme Keywords
BENTHIC, COASTAL, environment, ESTUARY
Child Items
Type | Title |
---|---|
Entity | de_db07_benthos |
Contact Information
Point of Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov
Metadata Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov
Extents
-75.4567° W,
-75.247593° E,
39.351757° N,
38.890727° S
2004 - 2007
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
|
UNCONTROLLED | |
None | Environment Monitoring |
Spatial Keywords
Thesaurus | Keyword |
---|---|
Global Change Master Directory (GCMD) Location Keywords |
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > DELAWARE
|
UNCONTROLLED | |
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 |
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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
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
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
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
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
W° Bound: | -75.4567 | |
---|---|---|
E° Bound: | -75.247593 | |
N° Bound: | 39.351757 | |
S° Bound: | 38.890727 |
Extent Group 1 / Time Frame 1
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
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
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
Activity Date/Time: | 2017-03-30 |
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Description: |
Date that the source FGDC record was last modified. |
Activity Log 2
Activity Date/Time: | 2017-11-14 |
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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
Activity Date/Time: | 2018-04-11 |
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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 |
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Data Quality
Completeness Report: |
Only oyster reef and unconsolidated bottom areas were sampled. |
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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
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. |
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Process Date/Time: | 2008-01-01 00:00:00 |
Child Items
Rubric scores updated every 15m
Type | Title | |
---|---|---|
Entity | de_db07_benthos |
Catalog Details
Catalog Item ID: | 47866 |
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GUID: | gov.noaa.nmfs.inport: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: | 2023-05-30 18:09+0000 |
Metadata Record Published: | 2018-04-11 |
Owner Org: | OCM |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2018-04-11 |
Metadata Review Frequency: | 1 Year |
Metadata Next Review Date: | 2019-04-11 |