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Lionfish Invasion

By Guest PostFebruary 9, 2013Environment, Natureadam marsh, biological dynamics, caribbean, cayman islands, coral reef habitats, coral reef systems, coral reefs, diversity, economic threat, ecosystem, environmental, exotic lionfish, florida waters, gainesville, government permission, indo-pacific, invasive species, lionfish invasion, little cayman, mark moline, mark warner, native habitats, neil van niekerk, new york, overfishing and pollution, reducing biodiversity, reef dwellers, reef environment, shrimp, smsp, tom frazer, university of florida, venomous barbs, young lionfish

Invasive species among marine science subjects in Cayman Islands study abroad program

With a spiky fringe of venomous barbs and bold brown-and-white stripes, the exotic lionfish invaded Florida waters several decades ago and expanded its range widely from the Caribbean to New York. Native to the Indo-Pacific, the invasive species has no natural predators in this part of the world and readily feasts on small fish and shrimp.

UD students have the opportunity to observe these intruders — up-close and underwater — in a new study abroad program offered in the Cayman Islands through the School of Marine Science and Policy (SMSP). (more…)

Surviving Without Ice

By Guest PostSeptember 15, 2012Environment, Natureamphipods, apherusa glacialis, arctic crustaceans, arctic ocean, disney movie, Environment, finding nemo, fram strait, geir johnsen, gulf stream, jorgen berge, life cycle, mark moline, melt, nemo hypothesis, north pole, ocean current, sea ice, shrimp

Arctic crustaceans use currents, deep-water migration to survive sea ice melts

With sea ice in the Arctic melting to record lows in summer months, marine animals living there face dramatic changes to their environment. Yet some crustaceans, previously thought to spend their entire lives on the underside of sea ice, were recently discovered to migrate deep underwater and follow ocean currents back to colder areas when ice disappears.

“Our findings provide a basic new understanding of the adaptations and biology of the ice-associated organisms within the Arctic Ocean,” said Mark Moline, director of the University of Delaware’s School of Marine Science and Policy in the College of Earth, Ocean, and Environment. “They also may ultimately change the perception of ice fauna as imminently threatened by the predicted disappearance of perennial sea ice.” (more…)

Scientists Explore Changing Arctic Ocean

By Guest PostAugust 25, 2012EnvironmentArctic, arctic ecosystem, arctic ocean, atmosphere, burning, calcification rate, calcium carbonate, canada basin, carbon dioxide, CO2, corals, crabs, cutter healy, Environment, florida keys, food chain, fossil fuel, gulf of mexico, jonathan wynn, kim yates, lisa robbins, marcia mcnutt, marine, north pole, ocean acidification, ocean acidity, oysters, plankton, resources, robert byrne, shell, shrimp, skeleton, study, terrestrial organism, us coast guard, virgin islands

Scientists are setting sail on August 25 to study ocean acidification in the Arctic and what this means for the future survival of marine and terrestrial organisms.

The Arctic Ocean is one of the most vulnerable places on the planet for acidification, yet it is the least-explored ocean. Acidification can disturb the balance of marine life in the world’s oceans, and consequently affect humans and animals that rely on those food resources.

Ocean acidification is particularly harmful to organisms such as corals, oysters, crabs, shrimp and plankton, as well as those up and down the food chain. Higher acidity decreases an organism’s calcification rate, meaning they lose their ability to build shells or skeletons. (more…)

Tag Archives: shrimp

Lionfish Invasion

Surviving Without Ice

Scientists Explore Changing Arctic Ocean