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Coral Bleaching May be Induced by Hypoxia

NCCOS-supported researchers found low oxygen (hypoxia) led to coral bleaching, mass coral mortality, and changes in the microbial community on a Caribbean coral reef. In 2017, hypoxia was detected on ...

NOAA Announces FY22 Multi-stressor Federal Funding...

A leather sea star (Dermasterias imbricata) clings to a rock at the Outer Pinnacles. Purple urchins and even a rock scallop can be seen in this colorful display of life ...

Building Partnerships to Track Hypoxia in Marine E...

Smart dissolved oxygen sensor deployed on spot prawn traps by WA Department of Fish and Wildlife (DFW) managers as part of the Puget Sound pre-season fishery survey. Credit WA DFW ...

Temperature and Oxygen Tolerances of Marine Specie...

NCCOS-supported researchers found that marine organism geographic distributions are best predicted by measuring temperature and dissolved oxygen together. Temperature and oxygen are closely linked in the physiology of marine animals ...

Fishing for Hypoxia

A recovered crab pot with a dissolved oxygen sensor. Photo Credit: Pat Kemmish, F/V Richard H. A newly published article in Sea Technology highlights the power of collaborative research between ...

Hypoxia in Tropical Marine Ecosystems, the Underst...

A recent review article by NCCOS-supported researchers assessing the state of knowledge of hypoxia (low oxygen) in tropical ecosystems finds little information in comparison to what is known about hypoxia ...

Impacts of Hypoxia on Marine Life Neglected, Thoug...

Map shows coastal sites where anthropogenic nutrients have exacerbated or caused oxygen declines to <2 mg/L (red dots), as well as ocean oxygen-minimum zones at 300 meters of depth (blue ...

NCCOS-supported Research Aids Site Selection for C...

NCCOS-supported researchers from the University of Florida and Smithsonian Marine Station paired water quality sensors with coral outplants to develop data-driven criteria for selection of restoration sites in the Florida ...

Predicting the Impacts of Climate Change on Seagra...

In a treatise, professor and seagrass ecologist/physiologist Dr. Richard Zimmerman reflects on the history of seagrass ecosystems research and contemplates the future of seagrasses under human disturbance and a changing ...

Research Enables Dungeness Crab Fishermen to Detec...

Oregon Dungeness crab fishermen retrieving a full crab pot with a dissolved oxygen sensor. Credit: Pat Kemmish, F/V Richard H. NCCOS-supported researchers deployed 40 low-cost oxygen sensors on crab pots ...

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Data & Publications

Encounter with mesoscale eddies enhances survival to settlement in larval coral reef fishes

Oceanographic features, such as eddies and fronts, enhance and concentrate productivity, generating high-quality patches that dispersive marine larvae may encounter in the plankton. Although broad-scale movement of larvae associated with these features can be captured in biophysical models, direct evidence ...

Evaluating confidence in the impact of regulatory nutrient reduction on Chesapeake Bay water quality

Excess nutrients derived from anthropogenic activity have resulted in the degradation of coastal water quality and an increase in low-oxygen and hypoxic events worldwide. In an effort to curb these impacts and restore water quality in the Chesapeake Bay, a ...

Fish assemblages associated with red grouper pits at Pulley Ridge, a mesophotic reef in the Gulf of Mexico

Red grouper (Epinephelus morio) modify their habitat by excavating sediment to expose rocky pits, providing structurally complex habitat for many fish species. Surveys conducted with remotely operated vehicles from 2012 through 2015 were used to characterize fish assemblages associated with ...

Fishes associated with mesophotic coral ecosystems in La Parguera, Puerto Rico

Fishes associated with mesophotic coral ecosystems (MCEs) of the La Parguera shelf-edge were surveyed between 2007 and 2011 using mixed-gas rebreather diving. Fishes were identified and counted within belt transects and roving surveys at 30, 40, 50, 60 and 70 ...

Fitness consequences of habitat variability, trophic position, and energy allocation across the depth distribution of a coral-reef fish

Environmental clines such as latitude and depth that limit species’ distributions may be associated with gradients in habitat suitability that can affect the fitness of an organism. With the global loss of shallow-water photosynthetic coral reefs, mesophotic coral ecosystems (~30–150 ...

Fluorescent proteins in dominant mesophotic reef-building corals

Reef-building corals inhabiting the mesophotic zone (30-150 m) not only survive but thrive in light-limiting environments. Similar to shallow corals, mesophotic corals also exhibit coral fluorescence. Because fluorescent proteins (FPs) absorb high-energy light and emit lower-energy light, FPs could play ...

Fungi associated with mesophotic macroalgae from the 'Au'au Channel, west Maui are differentiated by host and overlap terrestrial communities

Mesophotic coral ecosystems are an almost entirely unexplored and undocumented environment that likely contains vast reservoirs of undescribed biodiversity. Twenty-four macroalgae samples, representing four genera, were collected from a Hawaiian mesophotic reef at water depths between 65 and 86 m ...

Generalist dinoflagellate endosymbionts and host genotype diversity detected from mesophotic (67-100 m depths) coral Leptoseris

Mesophotic corals (light-dependent corals in the deepest half of the photic zone at depths of 30 - 150 m) provide a unique opportunity to study the limits of the interactions between corals and endosymbiotic dinoflagellates in the genus Symbiodinium. We ...

Genetic and biophysical modelling evidence of generational connectivity in the intensively exploited, Western North Atlantic red grouper (Epinephelus morio)

Understanding the connectivity of reef organisms is important to assist in the conservation of biological diversity and to facilitate sustainable fisheries in these ecosystems. Common methods to assess reef connectivity include both population genetics and biophysical modelling. Individually, these techniques ...

Genetic connectivity dynamics of the giant barrel sponge, Xestospongia muta, across the Florida reef tract and Gulf of Mexico

Resolving the genetic connectivity of coral reef taxa is necessary to understand the community dynamics of these increasingly threatened ecosystems. Herein, we assess the fine scale genetic connectivity of six populations of the Atlantic giant barrel sponge, Xestospongia muta (Schmidt, ...

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