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Bleaching in Oahu's Hanauma Bay

Published 2017-05-30

Photo: Catlin Seaview Over 1 million people visit the Hanauma Bay Nature Preserve on Oahu, Hawaii every year to snorkel over the reef and see diverse assemblages of fish and invertebrates. Although state laws protect the fish and invertebrate populations of Hanauma Bay, coral cover on the reef is in decline. In addition to local impacts, including damage from human interaction, corals in Hanauma Bay are at risk of decline due to rising ocean temperatures. Since 1999, the Coral Reef Assessment and Monitoring Program (CRAMP) has been monitoring corals in Hanauma Bay. Most recently,... (more)

Big Island's Mesophotic Fish

Published 2017-05-03

Photo: NOAA PIFSC In the waters off Hawaii Island, Hawaii (Big Island) marine researchers have documented fish communities in under-explored mesophotic reefs. These reef communities provide essential habitat for fish and invertebrates and may play an important role in preserving biodiversity. The depth at which these reefs exist (beyond the photic zone) may offer a “refuge” from disturbance and stress as compared to shallower reef environments. However, this depth poses a challenge for marine researchers in collecting and observing the biological communities. Until the development of... (more)

A Whale's Eye View

Published 2017-04-20

Photo: World Wildlife Fund Scientists from the World Wildlife Fund attached cameras to humpback whales in the Antarctic to gather information on where, when, and how the whales feed. These cameras were attached to the whales with suction cups and were accompanied by digital tracking tags. After 48 hours, the cameras detach from the whales and float to the surface. From the videos they collected, scientists are also able to learn more about the whales' social behavior and techniques used to clear ice to breathe at the surface. The purpose of this research is to locate priority feeding areas... (more)

Do the tropics have an internal thermostat?

Published 2017-03-23

Photo: NCAR Science Daily March 6, 2017 New research findings show that as the world warmed millions of years ago, conditions in the tropics may have made it so hot some organisms couldn't survive. Longstanding theories dating to the 1980s suggest that as the rest of Earth warms, the tropical temperatures would be strictly limited, or regulated by an internal 'thermostat.' These theories are controversial, but the debate is of great importance because the tropics and subtropics comprise half of Earth's surface area, greater than half of Earth's biodiversity, as well as over half... (more)

New tool to measure active learning

Published 2017-03-07

Photo: SFSU Measuring student learning and quantitatively analyzing the effects of educational pedagogy is a complex and difficult task. In an effort to simplify measurements of the levels of active learning that occur in a classroom, researchers at San Francisco State University have developed a new tool called DART – decibel analysis for research in teaching. DART analyzes simple audio recordings of classroom sounds to measure the extent to which teachers incorporate active learning and innovative teaching strategies in their curriculum. Many teachers, including those in the sciences,... (more)

Robotic Plankton

Published 2017-01-24

Photo: Scripps Institute of Oceanography Researchers at the Scripps Institute of Oceanography (UC San Diego) have created an innovative new tool that blends robotic technology with oceanography to answer questions about one of the ocean’s most abundant life forms – plankton. Planktonic organisms serve many important functions in the ocean, including fueling ocean food webs and cycling essential nutrients. However, there are still much to be discovered about their movement, dispersal, and impacts on larger organisms and ecosystems. Studying the movement of individual plankton has... (more)

Modeling the Future of Reefs

Published 2017-01-10

Photo: van Hooidonk et al. 2016 The Paris Agreement, signed by 196 nations in 2016, signaled a turning point in the road to a low-carbon economy and reduced greenhouse gas emissions. Countries involved in this agreement aim to limit global temperature increases to no more than 1.5 degrees Celsius. This effort has important implications for the future of important but vulnerable ecosystems, including tropical coral reefs. In light of this international effort, scientists recently published a study using global climate models to generate projections of the future of coral reefs under the... (more)

Emerging technologies: Environmental DNA

Published 2016-12-13

Photo: Center for Ocean Solutions Environmental DNA (eDNA) is a new and rapidly improving genetic tool that scientists are using to monitor a wide range of habitats around the world. eDNA is the nuclear or mitochondrial DNA that organisms shed into their environment and can be used to analyze the presence and abundance of populations. Recently, studies have characterized brook trout populations (Baldigo et al. 2016), surveyed marine fishes (Kelly et al. 2014), and discovered novel lineages of deep-sea foraminifera (Pawlowksi et al. 2001) using eDNA techniques. Using eDNA technology allows... (more)

Mortality on the Great Barrier Reef

Published 2016-11-01

Photo: ARC Centre of Excellence in Coral Reef Studies After the most widespread and severe coral bleaching event on the Great Barrier Reef, scientists are continuing to watch the health of the reefs closely. In October 2016, 6 months after the high temperature event, scientists have returned to conduct surveys and measure coral survivorship and mortality. They have found that many of the corals that bleached have now died on the northern areas of the Great Barrier Reef and this mortality is compounded by predation from coral-eating invertebrates like snails. Scientists are concerned that... (more)

Follow-Up on Fukushima

Published 2016-10-18

Photo Credit: WHOI A new scientific study published in the October issue of Integrated Environmental Assessment and Management, Jordi Vives i Batlle describes the status of research and findings on the impacts of the Fukushima Daiichi Nuclear Power Plant accident that occurred five years ago in Japan. It is estimated that 80% of the radioactive discharge fallout was over the Pacific Ocean, striking concern for the long-term impacts on marine life. The impacts of radioactivity on marine organisms throughout the food chain are influenced by a few key factors: How long the organisms are... (more)