Dataset: Squidpop 2021 2022

Name: Squidpop predation data collected at various temperatures from multiple sites in San Cristobal, Galapagos from 2021-2022 (Galapagos 2021 project)
Published: 2023-07-03
Keywords: predation, temperature, reef fish, oceans

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Spatial Extent: N:-0.702778 E:-89.247778 S:-0.929 W:-89.518588

Temporal Extent: 2021-08-01 - 2022-11-08

Project:

Temperature Regulation of Top-Down Control in a Pacific Upwelling System (Galapagos 2021)

Principal Investigator:

John Bruno (University of North Carolina at Chapel Hill, UNC-Chapel Hill)

Student:

Esteban Agudo-Adriani (University of North Carolina at Chapel Hill, UNC-Chapel Hill)

Contact:

John Bruno (University of North Carolina at Chapel Hill, UNC-Chapel Hill-IMS)

BCO-DMO Data Manager:

Sawyer Newman (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2023-07-03

Restricted:

Validated:

Current State:

Preliminary and in progress

Squidpop predation data collected at various temperatures from multiple sites in San Cristobal, Galapagos from 2021-2022 (Galapagos 2021 project)

Abstract:

These data set contain results from trials used to measured predation rates by fish across time and sites showing a temperature gradient in San Cristobal, Galapagos. We used the squidpop protocol, an assay based in setting 25 stakes with squid bait for one hour in the reefs. Afterward we count how many bait were eaten to have a measure of predation rate. We did this on 15 sites. In 6 of this sites we conducted the assay every two months for 15 months. Measuring the relationship between temperature and predation on reefs will allow us to understand better the role of temperature on moderating predation on marine communities.

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Methods & Sampling

Samples were collected using the squidpop protocol (Duffy et al., 2015). In each trial we set 20-25 stakes with squid attached to one end and the other end buried into the sand. We left the stakes for one hour. Afterward, we count how many bait were eaten to have an estimation of predation rates.

Data Processing Description

BCO-DMO Processing Notes:

"Cod" values in dataset corrected to "Cold" within the Season column

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-2128592
NSF Division of Ocean Sciences	OCE-2128592

Deployments

None available yet

Instruments

None available yet

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
Year	Year of squidpop sampling trial Format: %Y	unitless	year
Month	Month of squidpop sampling trial	unitless	month
Locality	Locality of squidpop sampling trial	unitless	site
SamplingTrial	Sampling trial identifier; identifiers are comprised of the year, month, and locality of the sample	unitless	Site_ID
Season	Season based on temperature sampling trial occured; documented seasons include, "Cold" and "Warm"	unitless	season
Habitat	Habitat category where sample trial was documented; habitats include, "CoralReef," "Beach," "Mangrove," "RockyReef"	unitless	site_descrip
Depth	Depth of squidpop deployment	meters	depth
Temperature	Water temerature at sampling trial locality	Celcius	temp
Time	Time of sampling trial Format: %H:%M	unitless	time
Squidpop	Squidpop stake number	unitless	sample
Eaten	Whether the bait was eaten "1" or not eaten "0"; Blank values in the dataset indicate if the stake was removed or not found	unitless	sample_descrip
Code	Squidpop stake identifier, where the codes are comprised of year, month, locality and stake	unitless	sample
Note	Field notes	unitless	comment

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Dataset: Squidpop 2021 2022