New developments in recreational fishing technology--from the use of aerial drones and social media scouting reports to advances in hook design--are creating challenges for fisheries management and effective policy making, according to a new study co-authored by University of Massachusetts Amherst researcher Andy Danylchuk.
A lot happens and changes within a thin one-meter-thick transition layer between deep Red Sea water and an expansive underlying brine lake.
Using a unique historical baseline (1983-2019), scientists have discovered dramatic changes in the chemistry and composition of Sargassum, floating brown seaweed, transforming this vibrant living organism into a toxic "dead zone." Results suggest that increased nitrogen availability from natural and anthropogenic sources, including sewage, is supporting blooms of Sargassum and turning a critical nursery habitat into harmful algal blooms with catastrophic impacts on coastal ecosystems, economies, and human health. Globally, harmful algal blooms are related to increased nutrient pollution.
Clownfish are instantly recognizable by their white stripes, which appear as they mature from larvae into adults. But how these distinctive patterns form has long remained a mystery. Now, a new study has found that the speed at which these white bars form depends on the species of sea anemone in which the clownfish live. The scientists also discovered that thyroid hormones, which play a key role in metamorphosis, drive how quickly their stripes appear.
A group of researchers carried out eDNA sequencing on jelly fish in the Florida Keys using a newly developed Fieldable eDNA sequencing kit to identify species that may be endangered, invasive or dangerous.
All life forms are endowed with the ability to sense gravity. However, the mechanism is not well-understood in acoels, a group of marine flatworms that represent a primitive invertebrate (without backbone) lifeform. In a new study, zoologists from Okayama University suggest necessary conditions for this ability to develop in hatchlings of an acoel species native to Okayama sea coasts, opening doors to understanding evolution better and pathology treatment applications in humans.
A new study shows that the current rate of biodiversity decline in freshwater ecosystems outcompetes that at the end-Cretaceous extinction that killed the dinosaurs: damage now being done in decades to centuries may take millions of years to undo.
Louisiana oysters from the Gulf of Mexico may experience some of the lowest salinity in the world due to the influx of fresh water from the Mississippi River. In addition, increased rainfall and large-scale river diversions for coastal protection will bring more fresh water that does not bode well for the eastern oyster. New research published this week reveals new information on why some oysters may be more resilient to freshwater than others.
Juvenile salmon migrating to the sea in the Sacramento River face a gauntlet of hazards in an environment drastically modified by humans, especially with respect to historical patterns of stream flow. Now fisheries scientists have identified key thresholds in the relationship between stream flow and salmon survival that can serve as actionable targets for managing water resources in the Sacramento River.
An international, interdisciplinary team of researchers that includes engineers from The University of Austin has found a way to replicate a natural process that moves water between cells, with a goal of improving how we filter out salt and other elements and molecules to create clean water while consuming less energy.