Primary Production

MCR LTER: Nitrogen source drives differential impacts of nutrients on coral bleaching prevalence, duration, and mortality

Data are from an 18-month field experiment on the fore reef of Moorea, testing how different forms of nitrogen (nitrate vs. urea) impact coral bleaching and mortality during two mild thermal stress events in the Austral summers of 2016 and 2017. These data are associated with a manuscript currently in review at Ecosystems. Tentative mansucript title and author list are: Nitrogen source drives differential impacts of nutrients on coral bleaching prevalence, duration, and mortality Deron E. Burkepile, Andrew A. Shantz, Thomas C. Adam, Katrina S. Munsterman, Kelly E. Speare, Mark C.

MCR LTER: Coral Reef Resilience: Turbinaria Alternate State Experiment

These data describe the density of Turbinaria ornata stipes from experimentally manipulated 1 m X 1 m plots on the forereef and naturally occurring 1 m X 1 m patches on the fringing reefs. In this pilot experiment Turbinaria were transplanted from the fringing reef to the forereef at 10 m depth to test whether it persists upon establishment. 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.

MCR LTER: Coral Reef Resilience: Short-term Accumulation of Algal Biomass on Unglazed Ceramic Tiles from July 2010-August 2011

Caged tiles were placed at various sites to measure short-term algal accumulation in the absence of grazing by fishes or large invertebrates. These data document biomass of algae that accumulated on unglazed ceramic tiles (2.5 cm X 2.5 cm) placed inside cages (mesh size = 2.5 cm x 2.5 cm) at various sites around the island of Moorea for a period of 3 to 4 weeks. Three separate experiments were conducted (one during July-August 2010 and two in July-August 2011).

MCR LTER: Coral Reef: Data in support of Wall and Edmunds 2013 Biological Bulletin, v225 no. 2, 92-101

These data were generated from a one-time experiment in support of a coral ecophysiology manuscript published in The Biological Bulletin. Wall and Edmunds (2013) The Biological Bulletin vol. 225 no. 2: 92-101 Juvenile colonies of massive Porites spp. were exposed to manipulated pH and bicarbonate ([HCO3 -]) in situ to test the hypothesis that ocean acidification (OA) does not affect respiration and calcification. Incubations lasted 28 h and exposed corals to ambient temperature and light with ecologically relevant water motion.

MCR LTER: Coral Reef: Porites growth, respiration, and photophysiology data in support of Edmunds 2012 Marine Biology, v159, 2149-2160

These data were generated from a one-time experiment in support of a coral ecophysiology manuscript; published in Marine Biology. Edmunds (2012) Marine Biology 159: 2149-2160 doi:10.1007/s00227-012-2001-y The hypothesis that was tested stated that high pCO2 (76.6 Pa and 87.2 Pa vs. 42.9 Pa) has no effect on the metabolism of juvenile massive Porites spp. after 11 days at 28 °C and 545 lmol quanta m-2 s-1. The response was assessed as aerobic dark respiration, skeletal weight (i.e., calcification), biomass, and chlorophyll fluorescence.
Viruses of a key coral symbiont exhibit temperature-driven productivity across a reefscape.

Year: 

2023

MCR LTER: Coral Reef: Growth and scaling of photosynthetic energy intake in Fungia concinna: Elahi & Edmunds 2007 JEMBE

For many marine invertebrates, the maximum size of an individual is influenced heavily by environmental factors and may be limited by energetic constraints. In this study, an energetic model developed originally for anemones was applied to the free-living scleractinian Fungia concinna (Verrill) from Moorea, French Polynesia to test the hypothesis that energetic constraints limit the size of this solitary coral.

MCR LTER: Coral Reef: Demersal Zooplankton Composition and Abundance

This data package contains demersal zooplankton abundance and taxonomic composition measured at 3 stations on the north shore of Moorea, French Polynesia: Forereef, Backreef and Fringing Reef from 2005 to 2010. Demersal zooplankton emerging from sand or rubble substrates on the reef during the night were captured in 8 inverted funnel traps placed on the substrate in the late afternoon and retrieved the following morning. Traps were made of 200 μm mesh netting with the opening to the cod end located 18 cm above the bottom.

MCR LTER: Coral Reef: Macroalgal CHN, ongoing since 2005

Samples of two common macroalgal species (Sargassum mangarevense, Turbinaria ornata) are collected yearly from fringing, backreef, and reef crest sites at each of the sites (LTER 1 through LTER 6) around Moorea. CHN analyses of dried, ground samples of each individual are made using standard methods. CHN data are used to track sustained variation in nutrient availability. Water column nutrients in coral reef systems usually are low to undetectable and their inputs tend to be episodic and ephemeral.

MCR LTER: Coral Reef: Estimates of component primary production and respiration, from 2006 to 2015

Estimates of primary production and respiration of three representative components of the Moorea coral reef ecosystem were made yearly in a laboratory flume from 2006 through 2015. The components are: algal turf communities, the macroalga Sargassum pacificum, and the common branching coral Pocillopora verrucosa. Metabolism estimates were made using changes in dissolved oxygen over time in a flume in unidirectional flow at saturating irradiances and dark. Rates were normalized to projected (planar) surface area (all components) and biomass (algal turfs, Sargassum).

MCR LTER: Coral Reef: Rates of benthic coral reef community metabolism from 2007 ongoing

Rates of community primary production and respiration can be calculated from the data presented here. For two sites on the north shore of Moorea, these measurements are sampled upstream and downstream: dissolved oxygen, water column velocity (speed and direction), in situ light (PAR) levels, incident solar radiation, temperature, wind speed, and transect length. Estimates are made yearly across approximately 160 m of the backreef community. This material uses data collected by the U.S.

MCR LTER: Coral Reef: Water Column: Zooplankton Composition and Abundance

This data package contains zooplankton abundance and taxonomic composition measured at 5 stations on the north shore of Moorea, French Polynesia: Forereef, Backreef, Fringing Reef, Cooks Bay, and Oceanic (5 km due north) from 2005 to 2010. Day time measurements over the reef were taken with a 30 cm, 200 μm mesh plankton net equipped with a slow speed General Oceanics Model 2030 flow meter. Nets were swum horizontally by a diver 1 m above the bottom at Forereef, Backreef and Fringing Reef sites.

MCR LTER: Coral Reef: Water Column: Particle sedimentation on the Forereef, Back Reef and Fringing Reef

This data package contains measurements of the sedimentation rate of particulate matter to the seafloor on the forereef, backreef and fringing reef of the north shore of Moorea, French Polynesia, during 2 to 4 seasons per year from August 2005 to January 2011. Measurements include estimates of the accumulation rate of particulate organic carbon (POC), particulate organic nitrogen (PON), and dry mass. Samples were collected with 2 different types of sediment traps.

MCR LTER: Coral Reef: Water Column: Nearshore Water Profiles, CTD, Primary Production, and Chemistry, from 2005 to 2018

This data package contains water chemistry measurements taken 2 to 4 times per year at 6 stations on the north shore of Moorea, French Polynesia: Forereef, Lagoon, Fringing Reef, Cooks Bay, Cooks Bay Stream Mouth, and Offshore (5 km due north). Measurements include standard CTD parameters, nutrients, chlorophyll, phaeopigments, particulate organic carbon and nitrogen, dissolved organic carbon, dissolved inorganic carbon, total alkalinity, water column primary production, and abundance of bacteria. Sampling began in August, 2005. All water samples were collected with Niskin Bottles.

MCR LTER: Coral Reef: Optical parameters and SST from SeaWiFS and MODIS, ongoing since 1997 and AVHRR-derived SST from 1985 to 2009

Monthly averages of the Sea Surface Temperature (SST), the Sub-surface chlorophyll-a concentration (Chl), the colored dissolved and detrital organic materials at 443 nm (acdm[443]) and the particulate backscattering coefficient at 443 nm (bbp[443]) around Moorea are obtained or derived from satellite data (SST from AVHRR and MODIS-Aqua; Chl, acdm[443] and bbp[443] from SeaWiFS and MODIS-AQUA).
A space-time mosaic of seawater carbonate chemistry conditions in the northshore Moorea coral reef system.

Year: 

2022
Bacterioplankton communities reveal horizontal and vertical influence of an Island Mass Effect.

Year: 

2022
Analysis of a mechanistic model of corals in association with multiple symbionts: within-host competition and recovery from bleaching.

Year: 

2022
Priority effects in coral-macroalgae interactions can drive alternate community paths in the absence of top-down control.

Year: 

2022
A view from both ends: shifts in herbivore assemblages impact top-down and bottom-up processes on coral reefs.

Year: 

2021
Fish predation on corals promotes the dispersal of coral symbionts.

Year: 

2021
Distinguishing the molecular diversity, nutrient content, and energetic potential of exometabolomes produced by macroalgae and reef-building corals.

Year: 

2022
Nitrate enrichment has lineage specific effects on Pocillopora acuta adults, but no transgenerational effects in planulae.

Year: 

2022
Evaluating the precariousness of coral recovery when coral and macroalgae are alternative basins of attraction.

Year: 

2022
How do fishers responses to macroalgal overgrowth influence the resilience of coral reefs?

Year: 

2022
Spatial co-variation in nutrient enrichment and fishing of herbivores in an oceanic coral reef ecosystem.

Year: 

2022
Thermal stress triggers productive viral infection of a key coral reef symbiont.

Year: 

2022
Extreme rainfall events pulse nutrients and sediments from terrestrial nearshore coastal communities: a case study from French Polynesia.

Year: 

2020
Extreme rainfall events pulse nutrients and sediments from terrestrial nearshore coastal communities: a case study from French Polynesia.
Complex interactions among stressors evolve over time to drive shifts from short turfs to macroalgae on tropical reefs.

Year: 

2020

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