Dataset: Phytoplankton abundance from net tows and environmental data
Deployment: Tobin_2015_2016

Environmental and phytoplankton net tow data from Juneau, AK.

Principal Investigator:

Dr Elizabeth D. Tobin (University of Alaska Fairbanks, UAF-Juneau)

BCO-DMO Data Manager:

Hannah Ake (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Mathew Biddle (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Enhancing Sustainability of Shellfish Harvest in Alaska: Addressing the Ecology of Alexandrium Blooms and their Sociocultural Impacts (SEAK-AHAB)

Current State:

Final no updates expected

Version:

Final

Version Date:

2016-09-30

Data URL:

https://www.bco-dmo.org/dataset-deployment/660434/data

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Description

Phytoplankton data and associated environmental conditions collected from net tows approximately weekly from four phytoplankton monitoring sites in Juneau, AK in 2015 and 2016.

Methods & Sampling

Dataset acquisition description

Phytoplankton Data:

Dock and beach-based phytoplankton net tow (Sea Gear, 8” diameter, 20um mesh) samples were collected at approximately weekly intervals at four phytoplankton sampling stations; Auke Bay, Amalga, Eagle Beach and Auke Rec in Juneau, AK. Surface net tow durations were 3 minutes.

Environmental Data:

Air temperature was recorded using the GPS mode on the NOAA weather android application. Surface seawater salinity was determined using a refractometer for salinity. Surface seawater temperature was recorded using a waterproof digital thermometer. Tide observations were verified using the GPS mode on the Tides Near Me android application.

Data Processing Description

Dataset Processing Description

Net tow samples were counted the same day as collection using a NEOSCI-ruled microscope slide with an 8×8 square grid to estimate relative abudance.

BCO-DMO Data Processing Notes:

-Reformatted column names to comply with BCO-DMO standards
-Removed spaces from data values and replaced with underscores
-Filled in blank cells with "nd"
-Replaced tide and weather codes with the appropriate definitions listed in the metadata
-2017-07-25: Updated with data from 2016.

More information about this dataset deployment

Funding

Award Number	Funding Source
ICER-1415195	NSF Divsion of Integrative and Collaborative Education and Research

Instruments

Plankton Net

Supplied Name: Sea Gear

Supplied Description:

Sea Gear 8" diameter 20um mesh

Instrument Type

Generic Name: Plankton Net

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/22/

Generic Description:

A Plankton Net is a generic term for a sampling net that is used to collect plankton. It is used only when detailed instrument documentation is not available.

Refractometer

Supplied Description:

Measured sea surface salinity

Instrument Type

Generic Name: Refractometer

Generic Description:

A refractometer is a laboratory or field device for the measurement of an index of refraction (refractometry). The index of refraction is calculated from Snell's law and can be calculated from the composition of the material using the Gladstone-Dale relation.

In optics the refractive index (or index of refraction) n of a substance (optical medium) is a dimensionless number that describes how light, or any other radiation, propagates through that medium.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
sampling_event	Sampling event ID	unitless	ev_code
date	Date sample was taken; YYYYmmdd	unitless	date
time_zone	Time zone where sample was taken	unitless	time_zone
time_local	Local time when sampling occurred; HH:MM	unitless	time_local
station	Station where sample was taken	unitless	station
lat	Latitude	decimal degrees	lat
lon	Longitude	decimal degrees	lon
investigator	Investigator responsible for collecting sample	unitless	investigator
site_type	Type of site where sampling occurred; Dock or Beach	unitless	site_descrip
air_temp	Air temperature	celsius	temp_air
surface_salinity	Surfance salinity	parts per thousand (PPT)	sal_ss
surface_temp	Sea surface temperature	celsius	SST
weather	Observed weather conditions	unitless	weather
tide	Observed tide conditions	unitless	tide
instrument	Instrument used to collect sample	unitless	instrument
depth	Depth of sample	meters	depth
dinoflagellates	Qualitative cell counts of relative abundance	count	abundance
diatoms	Qualitative cell counts of relative abundance	count	abundance
Alexandrium_sp	Qualitative cell counts of relative abundance	count	abundance
ISO_DateTime_Local	DateTime local; YYYY-mm-dd HH:MM	unitless	ISO_DateTime_Local
year	Four digit year sample was taken; YYYY	unitless	year

Database

Contribute Data

Dataset: Phytoplankton abundance from net tows and environmental data
Deployment: Tobin_2015_2016

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Phytoplankton abundance from net tows and environmental dataDeployment: Tobin_2015_2016

Dataset acquisition description

Dataset Processing Description

Dataset: Phytoplankton abundance from net tows and environmental data
Deployment: Tobin_2015_2016