Paleoecological Analysis of Cheilostome Bryozoa from Venezuela - British Guiana Shelf Sediments, 14 September 1963 to 19 September 1963 (NCEI Accession 7100130)

The abundance of cheilostome Bryozoa in many Cenozoic sublittoral marine facies, their sedentary existence, minute size and sensitivity to environmental conditions qualify them as a potentially important tool for paleoecological interpretation. Bryozoa have seldom been used in paleoecological studies, however, because only meager information is available on the relationship between modern Bryozoa and their environmental requirements and tolerance. Nevertheless, the usefulness of employing Bryozoa as a basis for paleoecological interpretation recently has been demonstrated in studies by Cheetham (1963) and Lagaaij and Gautier (1965).

Distribution patterns of benthonic organsims along continental shelves are due in part to ecological factors and in part of subsequent, postmortem transportation and mixing of the skeletal remains and sediments. The aim of the present study is to examine the environmental and sedminetary conditions taht may govern the composition and distribution of thanatocoenose bryozoan associations in Venezuela-British Guiana Shelf sediments.

Faunule composition varies quantitatively and qualitatively from station to station; thus the definition of both associations and biofacies has posed a problem common to many paleoecological investigations. An attempt was made in this study to define numerically associations and biofacies on the basis of Bryozoa content by clustering techniques involving R-mode and Q-mode analysis.

Paleoecologic interpretation based on thanatocoenose assemblages depends not only on principles of ecology, but also on local sedimentation and geologic history. The study of Bryozoa from sediments along the modern Venezuela-British Guiana shelf has been complemented by data on sediments and the marine environment, and by information on the recent geological history of the Venezuela-British Guiana shelf based on sediment studies by Nota (1953) and Koldewign (1958), and foraminiferal studies by Drooger and Kaaschieter (1958).
  • Cite as: Rucker, James Bivin; US Navy > Naval Oceanographic Office (2017). Paleoecological Analysis of Cheilostome Bryozoa from Venezuela - British Guiana Shelf Sediments, 14 September 1963 to 19 September 1963 (NCEI Accession 7100130). NOAA National Centers for Environmental Information. Unpublished Dataset. [access date]
gov.noaa.nodc:7100130
Other Access
  • Descriptive Information (offlineAccess)
    Navigate directly to the URL for a descriptive web page.
  • HTTPS (offlineAccess)
    Navigate directly to the URL for a descriptive web page.
Distribution Formats
  • Originator data format
Ordering Instructions Data in this archival information package are not currently available for public download from NCEI. Please contact NCEI Information Services directly for access to these data.
Distributor DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact Information Services
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
301-713-3277
NCEI.Info@noaa.gov
Time Period 1963-09-13 to 1963-09-19
Spatial Bounding Box Coordinates
N: 10.8
S: 7.1
E: -57.3
W: -60.9
Spatial Coverage Map
General Documentation
  • Dataset Description
    Navigate directly to the URL for a descriptive web page with download links.
Publication Dates
  • publication: 2017-12-08
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Data Update Frequency As needed
Purpose Basic research
Use Limitations
  • Data in this archival information package are not currently available for public download from NCEI. Please contact NCEI Information Services directly for access to these data.
  • accessLevel: Public
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Dataset Citation
  • Cite as: Rucker, James Bivin; US Navy > Naval Oceanographic Office (2017). Paleoecological Analysis of Cheilostome Bryozoa from Venezuela - British Guiana Shelf Sediments, 14 September 1963 to 19 September 1963 (NCEI Accession 7100130). NOAA National Centers for Environmental Information. Unpublished Dataset. [access date]
Cited Authors
Contributors
Resource Providers
Publishers
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Global Change Master Directory (GCMD) Science and Services Keywords
  • EARTH SCIENCE > OCEANS > MARINE SEDIMENTS
  • EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE
  • EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE
  • EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS
Platform keywords NODC PLATFORM NAMES THESAURUS
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords
  • SALINOMETERS
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords
  • OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN
  • OCEAN > ATLANTIC OCEAN > SOUTH ATLANTIC OCEAN
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Rucker, James Bivin; US Navy > Naval Oceanographic Office (2017). Paleoecological Analysis of Cheilostome Bryozoa from Venezuela - British Guiana Shelf Sediments, 14 September 1963 to 19 September 1963 (NCEI Accession 7100130). NOAA National Centers for Environmental Information. Unpublished Dataset. [access date]
Access Constraints
  • NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Fees
  • Digital data may be downloaded from NCEI at no charge in most cases. For custom orders of digital data or to obtain a copy of analog materials, please contact NCEI Information Services for information about current fees.
Acquisition Information (collection)
Instrument
  • bottle
  • bucket
  • corer
  • salinometer
Platform
  • USNS PREVAIL
Last Modified: 2017-12-08T19:31:54
For questions about the information on this page, please email: NODC.DataOfficer@noaa.gov