Tag Archives: Study author
Study: Marine heat waves do not affect fish populations
The lead author of the study, Assistant Professor in the Department of Oceanography at the University of California, Alexa L Fredston said she was surprised by these results. She added: “We know that fish communities faced long-term ocean warming by moving towards the poles, which can change the biomass and composition of fish in a given location. So I expected similar result, i.e. more fish species in “Warmer waters and fewer fish in colder waters after these marine heatwaves.” The American, Canadian and European researchers who conducted the study analyzed more than 82,000 bottom trawl fish catches collected as part of scientific expeditions in the North Atlantic and Northeast Pacific Oceans. >>click to read<< 13:01
North Atlantic right whales recovery hurt by entanglements, scientists say
The ability of an endangered whale species to recover is jeopardized by increasing rates of entanglement in fishing gear and a resultant drop in birth rates, according to scientists who study the animal. The population of North Atlantic right whales has slowly crept up from about 300 in 1992 to about 500 in 2010. But a study that appeared this month in the journal Frontiers in Marine Science said the number of baby right whales born every year has declined by nearly 40 percent since 2010. Study author Scott Kraus, a scientist with the New England Aquarium in Boston who worked on the study, said the whales’ population suffers even when they survive entanglements in fishing gear. Entanglements have surpassed ship strikes as a leading danger to right whales in recent years. Forty-four percent of diagnosed right whale deaths were due to ship strikes and 35 percent were due to entanglements from 1970 to 2009, the study said. From 2010 to 2015, 15 percent of diagnosed deaths were due to ship strikes and 85 percent were due to entanglements, it said. Read the article here 09:10
