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Dietary concerns
Local communities are not the only ones eating fish, of course, or even most of it. Much of the world is increasingly getting its fish from enormous ships roaming the world’s oceans, harvesting as they go. Another paper in
Science this week, which compares the fates of seabirds in the Northern and Southern hemispheres, suggests intensive commercial fishing may be making life on a warming planet much harder for birds.
By analysing 122 datasets reporting the average number of fledglings emerging from the carefully monitored nests of 66 seabird species between 1966 and 2018, an international team of scientists discovered striking differences between the hemispheres. The average number of young per nest successfully raised by birds whose diets consist at least partly of fish decreased significantly more in the Northern Hemisphere, which may ultimately result in decreasing population numbers.
E-Mail
Australian researchers recently reported a sharp decline in the abundance of coral along the Great Barrier Reef. Scientists are seeing similar declines in coral colonies throughout the world, including reefs off of Hawaii, the Florida Keys and in the Indo-Pacific region.
The widespread decline is fueled in part by climate-driven heat waves that are warming the world s oceans and leading to what s known as coral bleaching, the breakdown of the mutually beneficial relationship between corals and resident algae.
But other factors are contributing to the decline of coral reefs, as well, including pollution and overfishing.
According to a new study, Local conditions magnify coral loss after marine heatwaves, published in the journal