Benthic seawater temperature at 10m depth in Moorea, French Polynesia from 2005 to 2021
Project
Program
| Contributors | Affiliation | Role |
|---|---|---|
| Edmunds, Peter J. | California State University Northridge (CSUN) | Principal Investigator |
| Burgess, Scott | Florida State University (FSU) | Scientist |
| Maritorena, Stephane | University of California-Santa Barbara (UCSB-ERI) | Scientist |
| York, Amber D. | Woods Hole Oceanographic Institution (WHOI BCO-DMO) | BCO-DMO Data Manager |
Abstract
The ecological methods are described in detail in Edmunds et al. (2024, doi:10.1007/s00442-024-05517-y), and are briefly summarized below.
The study utilized the time series of the Moorea Coral Reef LTER, as they relate to coral community dynamics on the north shore fore reef. Annual measurements of coral cover, the density of coral settlers, and the density of small corals were used together with records of the environmental conditions to which they were exposed. Analyses focused on 2008–2021, which captured the final years of the last population outbreak of the crown of thorns (COTs) sea star, the coral population recovery that took place between 2010 and 2019, and coral mortality attributed to bleaching in 2019. Biological data came from two sites (LTER1 and LTER2) that are ~ 3 km apart, with environmental data from the same or similar sites (temperature), one of the two sites (flow at LTER1), or from 4.5 km resolution remote sensing data (Chlorophyll a).
Temperature was recorded with bottom-mounted sensors (Seabird SBE39, ± 0.002°C) at 10-m depth, with one sensor at each of LTER2 and 300 m west of LTER1 (named LTER0). Data were obtained from MCR data file knb-lter-mcr.1035.14 accessed 11 March 2022, from 10 m depth (doi: 10.6073/pasta/b8b3c1a927b7639459a244ff2ceef4e2). Sensors recorded at 0.0008 Hz, and values were averaged by day. This dataset only includes data from LTER0 and LTER2 and were used to characterize sites LTER1 and LTER2. In this file, “Site” column in this dataset refers to the site to which the data were applied in the statistical analysis (LTER1 or LTER2) and “the Data_Source” column shows which combination of sensors (at LTER0 or LTER2) was used to source the data.
Methodology excerpt from originating source data knb-lter-mcr.1035.14:
“A continuous time series of benthic water temperature is measured with bottom-mounted thermistors at six sites around the shores of Moorea, on the fringing reef, backreef, and forereef. The forereef temperature is recorded with SBE 39s at 10, 20, 30 and 40 m, starting between 2005 to 2007, except FOR00 starting in 2010. These are ongoing except the 40 m deployments were discontinued after August 2019. The backreef SBE 39s are mounted on plates at 1 m depth at LTER 1 and at 2 m depth at the other five sites. Onset HOBOs are deployed on the fringing reef at one shallow 1 m depth and one deeper depth varying by site as follows: 6 m at LTER 1, 4 m at LTER 2, 7 m at LTER 3, 6 m at LTER 4, 3 m at LTER 5 and 4 m at LTER 6. Those depths do not vary. The mounting plate is fixed to the reef. These depths are not measured by the thermistors and should be considered categorical. Temperature data are processed and resampled to a 20 minute time step. This material is based upon work supported by the U.S. National Science Foundation under Grant No. OCE 16-37396 (and earlier awards) as well as a generous gift from the Gordon and Betty Moore Foundation. Research was completed under permits issued by the French Polynesian Government (Délégation à la Recherche) and the Haut-commissariat de la République en Polynésie Francaise (DTRT) (Protocole d'Accueil 2005-2022). This work represents a contribution of the Moorea Coral Reef (MCR) LTER Site.”
* See "Related Datasets" section for access to related dataset pages which include dataset-specific methodology.
Originating temperature data "knb-lter-mcr.1035.14" (doi: 10.6073/pasta/b8b3c1a927b7639459a244ff2ceef4e2) was recorded at 0.0008 Hz then processed and resampled to a 20 minute time step. This dataset only includes data from LTER0 and LTER2 and were used to characterize sites LTER1 and LTER2.
* Sheet "Temp_Data" of file "Seawater_Temperature.xlsx" was imported into the BCO-DMO data system with values "nd" as missing data values.
** Missing data values are displayed differently based on the file format you download. They are blank in csv files, "NaN" in MatLab files, etc.
* Column names adjusted to conform to BCO-DMO naming conventions designed to support broad re-use by a variety of research tools and scripting languages. [Only numbers, letters, and underscores. Can not start with a number]
* Date column added from year month day columns
* Rows for years with Month 2 Day 29 in years that there were only 28 days in Feb were removed from this dataset. There was no temperature value for these rows (was missing data identifier).
* dataset references to results publication Edmunds et al 2023 changed to 2024 since that was the year assoicated with the DOI after final publication. Edmunds et al. (2024, doi:10.1007/s00442-024-05517-y)
| File |
|---|
918318_v1_seawater-temp.csv (Comma Separated Values (.csv), 460.91 KB) MD5:85a99c9bf4e146dae2833bcab6a10f62 Primary data file for dataset ID 918318, version 1 |
| File |
|---|
Site list filename: site_locations.csv (Comma Separated Values (.csv), 215 bytes) MD5:d13ffaef5e5725529594f401de6a97cc Site location list in Moorea (LTER0,LTER1,LTER2) for datasets related to Edmunds et al. (2024, doi:10.1007/s00442-024-05517-y) and Edmunds et al. (2020, doi:10.1093/icesjms/fsaa015).
Columns:
location, geolocation name
site, site identifier
lat_dd, site latitude, decimal degrees
lon_dd, site longitude, decimal degrees
lat_deg_decmin, site latitude, degrees decimal minutes
lon_deg_decmin, site longitude, degrees decimal minutes |
Relationship Description: Datasets in support of results publication Edmunds et al. (2023).
Relationship Description: Datasets in support of results publication Edmunds et al. (2023).
Relationship Description: Datasets in support of results publication Edmunds et al. (2023).
Relationship Description: Datasets in support of results publication Edmunds et al. (2023).
Relationship Description: Datasets in support of results publication Edmunds et al. (2023).
Relationship Description: Datasets in support of results publication Edmunds et al. (2023).
| Parameter | Description | Units |
| Site | Site these data are used to characterize, either LTER1 or LTER2 | unitless |
| Data_Source | Site from which data were obtained (LTER0 or LTER2) | unitless |
| ISO_Date | Date of measurement (ISO 8601 format) | unitless |
| Year | Year of measurement | unitless |
| Month | Month of measurement (1 = January, 2 = February, etc) | unitless |
| Day | Day of month | unitless |
| Temperature | Seawater temperature record | degrees Celsius (degC) |
| Dataset-specific Instrument Name | |
| Generic Instrument Name | Sea-Bird SBE 39 temperature recorder |
| Dataset-specific Description | Temperature was recorded with bottom-mounted sensors (Seabird SBE39, ± 0.002°C) at 10-m depth, with one sensor at each of LTER2 and 300 m west of LTER1. Sensors recorded at 0.0008 Hz, and values were averaged by day. |
| Generic Instrument Description | A high-accuracy temperature recorder (pressure optional) with internal battery and non-volatile memory for deployment at depths up to 10500 meters. It is intended for moorings or other long-term, fixed-site applications, as well as shorter-term deployments on nets, towed vehicles, or ROVs. Calibration coefficients stored in EEPROM allow the SBE 39 to transmit data in engineering units. Typical drift is less than 0.002C per year. The SBE 39 communicates directly with a computer via a standard RA-232 interface. For more information see http://www.bodc.ac.uk/data/documents/nodb/108627/ |
Moorea Coral Reef Long-Term Ecological Research site (MCR LTER)
From http://www.lternet.edu/sites/mcr/ and http://mcr.lternet.edu/:
The Moorea Coral Reef LTER site encompasses the coral reef complex that surrounds the island of Moorea, French Polynesia (17°30'S, 149°50'W). Moorea is a small, triangular volcanic island 20 km west of Tahiti in the Society Islands of French Polynesia. An offshore barrier reef forms a system of shallow (mean depth ~ 5-7 m), narrow (~0.8-1.5 km wide) lagoons around the 60 km perimeter of Moorea. All major coral reef types (e.g., fringing reef, lagoon patch reefs, back reef, barrier reef and fore reef) are present and accessible by small boat.
The MCR LTER was established in 2004 by the US National Science Foundation (NSF) and is a partnership between the University of California Santa Barbara and California State University, Northridge. MCR researchers include marine scientists from the UC Santa Barbara, CSU Northridge, UC Davis, UC Santa Cruz, UC San Diego, CSU San Marcos, Duke University and the University of Hawaii. Field operations are conducted from the UC Berkeley Richard B. Gump South Pacific Research Station on the island of Moorea, French Polynesia.
MCR LTER Data: The Moorea Coral Reef (MCR) LTER data are managed by and available directly from the MCR project data site URL shown above. The datasets listed below were collected at or near the MCR LTER sampling locations, and funded by NSF OCE as ancillary projects related to the MCR LTER core research themes.
This project is supported by continuing grants with slight name variations:
- LTER: Long-Term Dynamics of a Coral Reef Ecosystem
- LTER: MCR II - Long-Term Dynamics of a Coral Reef Ecosystem
- LTER: MCR IIB: Long-Term Dynamics of a Coral Reef Ecosystem
- LTER: MCR III: Long-Term Dynamics of a Coral Reef Ecosystem
- LTER: MCR IV: Long-Term Dynamics of a Coral Reef Ecosystem
Long Term Ecological Research network (LTER)
adapted from http://www.lternet.edu/
The National Science Foundation established the LTER program in 1980 to support research on long-term ecological phenomena in the United States. The Long Term Ecological Research (LTER) Network is a collaborative effort involving more than 1800 scientists and students investigating ecological processes over long temporal and broad spatial scales. The LTER Network promotes synthesis and comparative research across sites and ecosystems and among other related national and international research programs. The LTER research sites represent diverse ecosystems with emphasis on different research themes, and cross-site communication, network publications, and research-planning activities are coordinated through the LTER Network Office.
2017 LTER research site map obtained from https://lternet.edu/site/lter-network/
| Funding Source | Award |
|---|---|
| NSF Division of Ocean Sciences (NSF OCE) |
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