A new study published in the journal Frontiers in Marine Science has uncovered some unexpected trends in the relationship between coral reefs and their environment, contrary to prevailing scientific expectations and understanding. Authors Eric Hochberg, a BIOS reef systems ecologist, and Michelle Gierach, a scientist at NASA’s Jet Propulsion Laboratory (JPL), used readily-available public data for coral cover (the amount of coral in a given reef area) to conduct a meta-analysis, or an analysis of data from different studies. In this analysis, they statistically related reef condition to a suite of biogeophysical forcing parameters (forcings), such as aragonite saturation state (a figure thought to impact the ability of corals to calcify), significant wave height, number of coral species, and various local threats, among others.

This summer, due to demand from student applicants, BIOS offered two sessions of its Coral Reef Ecology (CRE) course, one that ran from June 28 to July 16 with 13 students, and the other that ran from August 9 to August 27 with 17 students. The courses were co-taught by reef systems ecologist Eric Hochberg and marine benthic ecologist Yvonne Sawall, with teaching assistant (TA) Michael Wooster. Wooster was Hochberg’s National Science Foundation Research Experiences for Undergraduates intern in 2014 and has been a TA for three BIOS summer courses and three fall semester courses.

Many people are familiar with—or have at least heard of—the Mariana Trench. Located in the western Pacific Ocean, this crescent-shaped feature on Earth’s crust is the deepest part of the world’s ocean, reaching a maximum depth of 36,070 feet (10,994 meters) in an area known as “Challenger Deep.”

Over two days in late August, a team of nearly 30 scientists, engineers, technicians and project managers met at BIOS to plan their approach for the next phase of the three-year COral Reef Airborne Laboratory (CORAL) project.

Coral reefs present scientists with a unique challenge. How do you accurately measure ecosystem processes—such as photosynthesis and calcification—within a system that changes over the course of a day and between days (depending on water flow, tides, sunlight, and weather, among other factors) and that also contains a variety of reef types and habitats (such as rim reefs, in-shore reefs, and deep water reefs)?

Understanding our planet and how it functions, as well as the impacts that human activities have on it, requires frequent and extended forays into the field to yield valuable data and observations. The COral Reef Airborne Laboratory (CORAL) investigation is a prime example. The three-year mission, funded by the NASA Earth Venture Suborbital-2 program, is conducting airborne remote sensing campaigns, along with in-water field validation activities, across four coral reef regions in the western and central Pacific Ocean.

When scientists study coral reefs, they are often interested in figuring out key components of reef health; specifically, primary production—or photosynthesis—and calcification, the rate at which new reef growth occurs. For decades this has meant time and labor-intensive fieldwork, with scientists documenting global reef condition and linking what they see underwater with lab-based experiments and measurements.

NASA’s Earth Venture Suborbital-2 Program has awarded BIOS scientist Dr. Eric Hochberg a grant to initiate the COral Reef Airborne Laboratory (CORAL). The three-year project will use an instrument mounted within the belly of an airplane to survey reefs around the world.  By using airborne data to calculate the amount of coral present on a reef, and to assess the processes underpinning coral reef growth or decline, CORAL provides a new and unprecedented perspective on coral reef ecosystems.

BIOS scientist and CORAL principle investigator Eric Hochberg explains the CORAL mission in a National Aeronautics and Space Administration (NASA) news release. Read on to learn more:

Earlier this year, BIOS senior scientist and coral reef ecologist Eric Hochberg published a paper in the journal Coral Reefs that put numbers to a widely accepted concept in reef science: that materials in seawater (such as phytoplankton, organic matter, or suspended sediment) can affect how much light, as well as the wavelength of light, reaches the seafloor. This, in turn, impacts the ecology of organisms, including corals and algae, that live on the seafloor and rely on that light for photosynthesis.