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Jon D. Witman

Affiliation: Brown University

Address: []

Orcid: 0000-0002-7983-6665

Project: Effects of Predator Diversity on the Strength of Trophic Cascades in an Oceanic Benthic Ecosystem (5 datasets)

Dataset	Latest Version Date	Current State
Subtidal temperature data (12-15 m depth) in the central Galapagos Islands, Ecuador from 2011-2013 (GMR Trophic Cascades project) Roles: Principal Investigator, Contact	2014-06-11	Preliminary and in progress
Residence times of consumers in subtidal areas on Isla Baltra, Gal?pagos during 2012 (GMR Trophic Cascades project) Roles: Principal Investigator, Contact	2016-01-05	Final no updates expected
Sea water temperatures corresponding to the experimental trials for 2 species of sea urchin found in the subtidal areas of Isla Baltra, Galapagos during June-July 2012 (GMR Trophic Cascades project) Roles: Principal Investigator, Contact	2016-01-15	Final no updates expected
Experimental results describing urchin survivorship in tethering experiments on rocky subtidal sites in the Galapagos Islands during 2007-2008 (GMR Trophic Cascades project) Roles: Principal Investigator, Contact	2016-01-15	Preliminary and in progress
Percent algal substrate grazed by sea urchins in trophic cascade experiments in Gal?pagos Islands during 2012 (GMR Trophic Cascades project) Roles: Principal Investigator, Contact	2016-01-19	Final no updates expected

Project: RAPID: Understanding Thresholds and regime shifts in marine ecosystems: effects of the 2014-2015 El Nino in the Galapagos rocky subtidal (3 datasets)

Dataset	Latest Version Date	Current State
Measurement site locations from RAPDGALPGS project in the Eastern Tropical Pacific, Galapagos Islands, Ecuador in 2015 and the SPONGERAPDGALPGS project in 2016 and 2017 Roles: Principal Investigator, Contact	2017-03-03	Final no updates expected
Subtidal temperature values from RAPDGALPGS project in the Eastern Tropical Pacific, Galapagos Islands, Ecuador in 2015 and 2016 (RAPDGALPGS project) Roles: Principal Investigator, Contact	2017-02-10	Preliminary and in progress
Barnacle percent cover in rocky subtidal habitats of the Galapagos Islands observed in 2015 and 2016 (RAPDGALPGS project) Roles: Principal Investigator, Contact	2017-02-16	Preliminary and in progress

Project: RAPID: Testing the ability of the 2015-2017 El Nino Southern Oscillation (ENSO) to drive a community-level regime shift in the Galapagos marine ecosystem (4 datasets)

Dataset	Latest Version Date	Current State
Measurement site locations from RAPDGALPGS project in the Eastern Tropical Pacific, Galapagos Islands, Ecuador in 2015 and the SPONGERAPDGALPGS project in 2016 and 2017 Roles: Principal Investigator, Contact	2017-03-03	Final no updates expected
Subtidal temperatures at 2 depth strata (6 and 12-15 m depth) from 12 sites in the central Galápagos Islands, Ecuador from February 2016 to February 2017 (SPONGERAPDGALPGS project) Roles: Principal Investigator, Contact	2017-12-21	Preliminary and in progress
Barnacle (Megabalanus peninsularis) cover in the central Galápagos Islands, Ecuador from Jan 2016 to Jan 2017 Roles: Principal Investigator, Contact	2018-03-29	Preliminary and in progress
Sea urchin (Eucidaris) quadrat counts at twelve sites in the Galápagos Islands in 2016-2017 Role: Principal Investigator	2022-04-11	Final no updates expected

Project: RAPID: Illuminating the effects of a COVID-19 elimination of diver disturbance on reef fish behavior, distribution and ecosystem functioning in the Galapagos Marine Reserve (3 datasets)

Dataset	Latest Version Date	Current State
Sound pressure levels from hydrophone recordings at six sites in the Galapagos Islands from September 2020 through August 2022 to examine soundscapes during the Anthropause and beyond Roles: Principal Investigator, Contact	2023-09-13	Preliminary and in progress
Fish Flight Initiation Distance Data During the COVID 19 Lockdown from 2020-2021 (Galapagos diver disturbance project) Role: Principal Investigator	2023-10-17	Preliminary and in progress
Body size measurements of megafauna species at 6 sites after the 2020 COVID lockdown in the Galapagos Islands from 2020-2021 (Galapagos diver disturbance project) Role: Principal Investigator	2023-10-23	Preliminary and in progress