Dataset: Aleutian Islands Benthic Production: O2

Name: Oxygen measurements from kelp forests and urchin barrens on the Aleutian Islands, Alaska from R/V Oceanus cruises OC1606A and OC1707A during 2016-2017
Published: 2019-02-12
Keywords: oceans

Cite This Dataset

Spatial Extent: N:53.38962 E:-179.30663 S:51.41008 W:177.60144

Temporal Extent: 2016-06-17 - 2017-07-22

Project:

Collaborative Research: Changes in ecosystem production and benthic biodiversity following the widespread loss of an ecosystem engineer (Kelp Forest Ecosystem Engineer Loss)

Principal Investigator:

Matthew Edwards (San Diego State University, SDSU)

Co-Principal Investigator:

Brenda Konar (University of Alaska Fairbanks, UAF)

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2019-02-12

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Oxygen measurements from kelp forests and urchin barrens on the Aleutian Islands, Alaska from R/V Oceanus cruises OC1606A and OC1707A during 2016-2017

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Description

Estimates of benthic primary production and respiration in kelp forests and urchin barrens in the Aleutian Archipelago, Alaska (Attu, Nizki, Kiska, Atka, Adak, Chuginadak, Tanaga, Amchitka, Yunaska, Unmak, and Unalaska).

Methods & Sampling

We deployed 3-5 benthic chambers in each of three habitats (kelp forests, urchin barrens, and transition zones) at each of 10 islands in the Aleutian Archipelago. Each chamber was equipped with a data logger for dissolved oxygen (PME Minidot) and light (Odyssey PAR) and were left on the benthos for 36 hours.

Data were collected each minute while deployed. Data are given for each chamber in each habitat at each island.

Refer to list below for the habitat type each sensor was place in on each island.

Attu:
Kelp forest: S1, S2, S3, S10.
Urchin Barren: S4, S5, S6.
Transition: S7, S8, S9, S11.

Nizki:
Kelp forest: S1, S2, S3, S11.
Urchin Barren: S4, S5, S6, S13.
Transition: S7, S8, S9, S10.

Kiska:
Kelp forest: S1, S2, S3, S11.
Urchin Barren: S4, S5, S6, S13.
Transition: S7, S8, S9, S10.

Amchitka:
Kelp forest: S1, S2, S3, S11.
Urchin Barren: S4, S5, S6.
Transition: S7, S8, S9, S10.

Tanaga:
Kelp forest: S5, S6, S7, S8.
Urchin Barren: S9, S10, S11, S12.
Transition: S1, S2, S3, S4.

Adak:
Kelp forest: S9, S10, S11, S12.
Urchin Barren: S1, S2, S3, S4.
Transition: S5, S6, S7, S8.

Atka:
Kelp forest: S1, S2, S3, S11.
Urchin Barren: S7, S8, S9, S13.
Transition: S4, S5, S6, S10.

Yunaska:
Kelp forest: S1, S2, S3.
Urchin Barren: S4, S5, S6, S11.
Transition: S7, S9, S10.

Chuginadak:
Kelp forest: S9, S10, S11, S12.
Urchin Barren: S1, S2, S3, S4, S13, S14.
Transition: S5, S6, S7, S8.

Umnak:
Kelp forest: S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S13, S15.

Unalaska:
Kelp forest: S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S13, S14, S15.

Data Processing Description

We used MS Excel and R-Studio to summarize and QA the data.

BCO-DMO Processing:
- modified parameter names (replaced spaces with underscores);
- re-formatted date to yyyy-mm-dd;
- re-formatted time to HH:MM;
- filled empty cells with nd;
- inserted latitude and longitude for each site.

Data Files

File
O2.csv (Comma Separated Values (.csv), 3.52 MB) MD5:d3b2bbc0b93fc8180753cac6c1300107 Primary data file for dataset ID 755658

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1435194

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
OC1707A		2017-07-18	R/V Oceanus	Matthew Edwards (Chief Scientist)	data info
OC1606A		2016-06-17	R/V Oceanus	Genoa Sullaway (Chief Scientist)	data info

Instruments

Oxygen Sensor

Supplied Name: PME Minidot Oxygen loggers

Supplied Description:

Instrument Type

Generic Name: Oxygen Sensor

Acronym: Dissolved Oxygen Sensor

Generic Description:

An electronic device that measures the proportion of oxygen (O2) in the gas or liquid being analyzed

Photosynthetically Available Radiation Sensor

Supplied Name: Odyssey PAR Logger

Supplied Description:

Instrument Type

Generic Name: Photosynthetically Available Radiation Sensor

Acronym: PAR sensor

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/122/

Generic Description:

A PAR sensor measures photosynthetically available (or active) radiation. The sensor measures photon flux density (photons per second per square meter) within the visible wavelength range (typically 400 to 700 nanometers). PAR gives an indication of the total energy available to plants for photosynthesis. This instrument name is used when specific type, make and model are not known.

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
Site	Island name	unitless	site
lat	Latitude of measurement; positive values = North	decimal degrees	lat
lon	Longitude of measurement; positive values = East	decimal degrees	lon
Date	Date of measurement; format: yyyy-mm-dd	unitless	date
Alaska_Standard_Time	Time of deployment (Alaskan standard time); 24-hr clock; format: HH:MM	unitless	time
S1	Oxygen measurement (DO); refer to metadata for habitat type at each deployment	milligrams per liter (mg/L)	O2
S2	Oxygen measurement (DO); refer to metadata for habitat type at each deployment	milligrams per liter (mg/L)	O2
S3	Oxygen measurement (DO); refer to metadata for habitat type at each deployment	milligrams per liter (mg/L)	O2
S4	Oxygen measurement (DO); refer to metadata for habitat type at each deployment	milligrams per liter (mg/L)	O2
S5	Oxygen measurement (DO); refer to metadata for habitat type at each deployment	milligrams per liter (mg/L)	O2
S6	Oxygen measurement (DO); refer to metadata for habitat type at each deployment	milligrams per liter (mg/L)	O2
S7	Oxygen measurement (DO); refer to metadata for habitat type at each deployment	milligrams per liter (mg/L)	O2
S8	Oxygen measurement (DO); refer to metadata for habitat type at each deployment	milligrams per liter (mg/L)	O2
S9	Oxygen measurement (DO); refer to metadata for habitat type at each deployment	milligrams per liter (mg/L)	O2
S10	Oxygen measurement (DO); refer to metadata for habitat type at each deployment	milligrams per liter (mg/L)	O2
S11	Oxygen measurement (DO); refer to metadata for habitat type at each deployment	milligrams per liter (mg/L)	O2
S12	Oxygen measurement (DO); refer to metadata for habitat type at each deployment	milligrams per liter (mg/L)	O2
S13	Oxygen measurement (DO); refer to metadata for habitat type at each deployment	milligrams per liter (mg/L)	O2
S14	Oxygen measurement (DO); refer to metadata for habitat type at each deployment	milligrams per liter (mg/L)	O2
S15	Oxygen measurement (DO); refer to metadata for habitat type at each deployment	milligrams per liter (mg/L)	O2
Time_24_hr	Chuginadak only; format: HH:MM	unitless	time
Alaska_Standard_Time_S1_S3	The sensors' internal clocks for the S1, S2, and S3 sensors. Recorded at Umnak only; format: HH:MM.	unitless	time
Alaska_Standard_Time_S4_S15	The sensors' internal clocks for the S4-S15 sensors. Recorded at Umnak only; format: HH:MM.	unitless	time

Database

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Dataset: Aleutian Islands Benthic Production: O2