Zooplankton abundance and biomass

Metadata:

• Identification_Information
• Data_Quality_Information
• Metadata_Reference_Information
• Distribution_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Coyle, K.

Publication_Date: Unknown

Title: Zooplankton abundance and biomass

Geospatial_Data_Presentation_Form: digital

Description:

Abstract:

Zooplankton abundance and biomass were measured during spring and late summer on the inner shelf of the southeastern Bering Sea in years of climate extremes. Samples were taken during late spring and late summer of three years: 1997, a year of moderate spring ice cover and unusually warm, calm summer conditions; 1998, a year of warm, but stormy summer conditions with very little spring ice cover; and 1999, a year of extensive spring ice cover, cold spring conditions and storms during spring and summer. Mean water column temperature was significantly lower during June 1999 than June 1998 and 1997. Copepod abundance and biomass during June were correlated with mean water column temperature and mean temperature below the thermocline. Mean calanoid abundance during June 1999 was 8–52% of the mean abundance during 1998 and 1997. Significantly lower abundances during June 1999 were observed for Calanus marshallae, Acartia spp., Pseudocalanus spp. and calanoid nauplii. Significant interannual differences in mean water column temperature and calanoid abundance during late summer (late July–early September) were not detected. The Hirst–Lampitt equations were used to estimate the mean daily copepod production during the warm and cold years.
The mean production estimate during warm conditions was 13 mg C m^-2 d^-11, with a range of 3–37 mg C m^-2 d^-1, similar to previous estimates. Production estimates during the cold spring, 1999, were 3–4% of the production during warm periods. Assuming a 35% gross growth efficiency, calanoids could consume an average of 37 mg C m^-2 d^-1 during warm periods, but only about 2.6 mg C m^-2 d^-1 during a cold spring. Comparison of the above estimates to concurrent measures of primary production indicate that during warm, calm seasons, calanoids could remove most or all of the available water column primary production, thus indicating that calanoids may have been food limited. During cool conditions, the calanoids could remove only about 3% of the estimated daily primary production. Lower postbloom primary production rates and higher calanoid grazing rates may result in substantially lower annual carbon flux to benthic communities on the inner shelf during warm calm years relative to cold years with extensive spring ice cover.

Purpose:

A restrospective dataset for the Bering Sea Ecosystem Study (BEST) and Bering Sea Integrated Ecosystem Research Project (BSIERP).

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19970604

Ending_Date: 20040819

Currentness_Reference: publication date

Status:

Progress: In work

Maintenance_and_Update_Frequency: As needed

Keywords:

Theme:

Theme_Keyword_Thesaurus: IOOS Core Variables

Theme_Keyword: Version 1

Theme_Keyword: Biology

Theme_Keyword: Temperature

Theme_Keyword: Salinity

Theme_Keyword: Zooplankton species

Theme_Keyword: Zooplankton abundance

Theme:

Theme_Keyword_Thesaurus: Alaska Marine Information System

Theme_Keyword: project_number:unknown

Theme_Keyword: data_url:<http://data.eol.ucar.edu/codiac/dss/id=102.282>

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

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>

Cross_Reference:

Citation_Information:

Originator: Coyle

Originator: Pinchuk

Publication_Date: Unknown

Title:

Climate-related differences in zooplankton density and growth on the inner shelf of the southeastern Bering Sea

Geospatial_Data_Presentation_Form: document

Online_Linkage:

<http://www.sfos.uaf.edu/people/research/pinchuk/Coyle_Pinchuk_2002a.pdf>

Data_Quality_Information:

Logical_Consistency_Report: Unspecified

Completeness_Report: Unspecified

Lineage:

Process_Step:

Process_Description:

Initial metadata data record created by AOOS data management. Link metadata record to a project record in the Alaska Marine Information System.

Process_Date: 20091020

Process_Step:

Process_Description: Link metadata record with AOOS data archive.

Process_Date: 20091030

Process_Step:

Process_Description:

Added BSIERP data portal URL. Added reference to paper for this dataset.

Process_Date: 20091030

Metadata_Reference_Information:

Metadata_Date: 20091019

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

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.