Researchers “counted” Japanese jack mackerel (Trachurus japonicus) in Maizuru Bay, Japan, through quantitative measurements of environmental DNA concentration. Credit: Reiji Masuda, Kyoto University River water, lake water, and seawater contain DNA belonging to organisms such as animals and plants. Ecologists have begun to actively analyze such DNA molecules, called environmental DNA, to […]

The 75-station pattern is typical for summer and fall cruises by CalCOFI, which has collected data on marine life and ocean conditions off the California coast. The original 1950s sampling plan was similar but covered a larger area, from the northern tip of California to the southern tip of the […]

A boxfish swimming above dense mats of diatoms in the high CO2 site along the Shikine volcanic gradient. Credit: Nicolas Floc’h Rising carbon dioxide in the atmosphere and the consequent changes created through ocean acidification will cause severe ecosystem effects, impacting reef-forming habitats and the associated fish, according to new […]

Damselfishes on the Great Barrier Reef in Australia, including species used by the researchers in their study. Credit: Simon Gingins Double-Checking the Science on the Effects of Ocean Acidification Sometimes it helps to check the facts. You may be surprised by what you find. Over the last decade, several high-profile […]

IUCN Climate change and nutrient pollution are driving the oxygen from our oceans, and threatening many species of fish. That’s the conclusion of the biggest study of its kind, undertaken by conservation group IUCN. While nutrient run-off has been known for decades, researchers say that climate change is making the […]