Estimation of Micro-zooplankton (MZ) Abundance and Biomass (B55)

Metadata:

• Identification_Information
• Data_Quality_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Stoecker, Diane

Publication_Date: Unpublished material

Title:

Estimation of Micro-zooplankton (MZ) Abundance and Biomass (B55)

Geospatial_Data_Presentation_Form: spreadsheet

Description:

Abstract:

This project addresses the BSIERP hypothesis that "Climate-induced changes in physical forcing will modify the availability and partitioning of food for all trophic levels through bottom-up processes". MZ are responsible for most of the grazing on phytoplankton in the sea and are an important link in the food chain between phytoplankton and zooplankton, which are food for zooplanktivorous fish which support top predators. The project contributes to the goals of BSIERP by providing summer data on standing stocks of MZ and their grazing activities. A key goal is to determine how the MZ link in Bering Sea food webs is influenced by climate-induced changes in physical forcing.

Purpose: Unspecified

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20080703

Ending_Date: 20080731

Currentness_Reference: ground condition

Status:

Progress: In work

Maintenance_and_Update_Frequency: Unspecified

Spatial_Domain:

Description_of_Geographic_Extent: Eastern Bering Sea

Bounding_Coordinates:

West_Bounding_Coordinate: -179.39

East_Bounding_Coordinate: -163.14

North_Bounding_Coordinate: 62.2

South_Bounding_Coordinate: 54.31

Keywords:

Theme:

Theme_Keyword_Thesaurus: IOOS Core Variables

Theme_Keyword: Version 1

Theme_Keyword: Zooplankton abundance

Theme_Keyword: Zooplankton species

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: project_number:B55

Theme_Keyword: data_url:<http://data.eol.ucar.edu/codiac/dss/id=245.B55-001>

Theme_Keyword: archive_url:<http://www.eol.ucar.edu/projects/bsierp>

Access_Constraints:

Access is restricted. Data policy: <http://www.eol.ucar.edu/projects/best/program_management_plan.pdf>

Use_Constraints:

Use is restricted. Data policy: <http://www.eol.ucar.edu/projects/best/program_management_plan.pdf>

Data_Quality_Information:

Logical_Consistency_Report: Unspecified

Completeness_Report: Unspecified

Lineage:

Methodology:

Methodology_Type: Field

Methodology_Description:

Water samples were obtained using 30 l Niskin bottles. Duplicate samples (250 ml) for MZ were preserved with 10% (final concentration) acid Lugol’s solution in amber glass bottles.

Methodology:

Methodology_Type: Lab

Methodology_Description:

MZ samples were returned to Horn Point Laboratory for enumeration of > 20 μm MZ (> ~15 μm when fixed with acid Lugol’s) using settling slides and a Nikon Eclipse TE 2000-U inverted microscope. In our data sheets an “0” indicates <40 cells/liter. A SPOT v 4.0 RT camera and SPOT diagnostic software were used to record images and to measure cells. In accordance with earlier MZ studies in the Bering Sea, ciliates smaller than 20 μm and mixotrophic dinoflagellates as well heterotrophic dinoflagellates were enumerated. Onboard, we examined “fresh” samples, either live or fixed with 1% glutaraldehyde with transmitted light and epifluorescence microscopy to look for the presence or absence of plastids. Our notes from the cruise facilitated in determination of which ciliates and dinoflagellates were photosynthetic (had chlorophyll fluorescence) and which were strictly heterotrophic (no chlorophyll fluorescence except associated with algae in food vacuoles). Separate data sheets are presented for ciliates, dinoflagellates and “other” microzooplankton

Process_Step:

Process_Description:

Skeleton metadata record created. New filename: B55_Stoecker_uZoop_Abundance.xml

Process_Date: 20091028

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: National Center for Atmospheric Research

Contact_Person: Earth Observing Laboratory

Contact_Address:

Address_Type: mailing and physical

Address: 3450 Mitchell Lane

City: Boulder

State_or_Province: CO

Postal_Code: 80301

Country: USA

Contact_Voice_Telephone: 303-497-8154

Contact_Electronic_Mail_Address: codiac@ucar.edu

Contact_Electronic_Mail_Address: stott@ucar.edu

Distribution_Liability:

No warranty expressed or implied is made regarding the accuracy or utility of the data, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that careful attention be paid to the contents of the metadata file associated with the data. The NCAR and NPRB shall not be held liable for improper or incorrect use of the data described and/or contained herein.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: XLS

File_Decompression_Technique: No compression applied

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: <http://beringsea.eol.ucar.edu>

Digital_Form:

Digital_Transfer_Information:

Format_Name: ASCII

File_Decompression_Technique: No compression applied

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: <http://beringsea.eol.ucar.edu>

Fees: None

Metadata_Reference_Information:

Metadata_Date: 20091028

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: National Center for Atmospheric Research

Contact_Person: Earth Observing Laboratory

Contact_Address:

Address_Type: mailing and physical

Address: 3450 Mitchell Lane

City: Boulder

State_or_Province: CO

Postal_Code: 80301

Country: USA

Contact_Voice_Telephone: 303-497-8154

Contact_Electronic_Mail_Address: codiac@ucar.edu

Contact_Electronic_Mail_Address: stott@ucar.edu

Metadata_Standard_Name:

FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001.1-1999