Dataset Available NCEI

Quantitative phytoplankton profiles for Pensacola Transect Station P1 collected during the R/V Bellows cruise of DeSoto Canyon, October 13, 2012

Authors: Nienow, James

Published On: Jan 20 2016 16:41 UTC

DOI: https://doi.org/10.7266/N79K4871

UDI: R1.x138.079:0079

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Project Information

Funded By:
Gulf of Mexico Research Initiative

Funding Cycle:
RFP-I

Research Group:
Deepsea to Coast Connectivity in the Eastern Gulf of Mexico (DEEP-C)

Point of Contact

James Nienow
Valdosta State University / Department of Biology
jnienow@valdosta.edu

Data Collection Period

2012-10-13

Theme keywords

Phytoplankton, diatoms, coccolithophores, depth profiles

ISO 19115-2 Metadata

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Abstract:

This dataset reports phytoplankton species abundance data for samples collected from the R/V Bellows during the October 13-15, 2012, cruise. Samples were taken at Pensacola Transect Station P1 (30.25o N, 87.25o W) in the Florida Panhandle Bight at the head of DeSoto Canyon. One-liter samples were collected from the surface and a depth 16 meters using Niskin bottles. Up to one liter of each sample was filtered onto a 0.45 micrometer nitrocellulose filter and air-dried. A portion of each filter was mounted on an aluminum stub, sputter-coated, and examined with a JEOL JSM-6480 LV scanning electron microscope. Diatoms, coccolithophores, and armored dinoflagellates were identified to the lowest possible taxonomic category. The number of cells of each taxon in a field of view at a magnification of 1000x was recorded, with up to 700 fields-of-view examined, depending on the density of phytoplankton in the sample. The dataset includes the depth, the volume filtered, the number of cells of each taxon counted, and the calculated abundance of each taxon in cells per liter. Micrographs taken during the analysis are included.

Suggested Citation:

Nienow, James. 2016. Quantitative phytoplankton profiles for Pensacola Transect Station P1 collected during the R/V Bellows cruise of DeSoto Canyon, October 13, 2012. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N79K4871

Purpose:

Develop phytoplankton profiles as baseline for future studies.

Data Parameters and Units:

Cell counts in cell/liter at specified depths

Methods:

One-liter samples were collected from the surface and a depth 17 meters using Niskin bottles. Up to one liter of each sample was filtered onto a 0.45 micrometer nitrocellulose filter and air-dried. A portion of each filter was mounted on an aluminum stub, sputter-coated, and examined with a JEOL JSM-6480 LV scanning electron microscope. Diatoms, coccolithophores, and armored dinoflagellates were identified to the lowest possible taxonomic category. The number of cells of each taxon in a field of view at a magnification of 1000x was recorded, with up to 700 fields-of-view examined, depending on the density of phytoplankton in the sample.

Instruments:

JEOL JSM-6480 LV scanning electron microscope