Climate Change Alters The Rules Of Sperm Competition In The Sea

2016-08-22T15:33:07+00:00 August 22, 2016|

Increasing ocean acidification, brought about by humanmade carbon emissions, reduces sperm performance in a species of sea urchin, say scientists. The impact of climate change on global seawater conditions could change the rules of sperm competition for many important marine species, the pioneering new study has shown.

The Deep Ocean: Plunging To New Depths To Discover The Largest Migration On Earth

2016-08-22T13:53:29+00:00 August 22, 2016|

The largest migration on Earth is very rarely seen by human eyes, yet it happens every day. Billions of marine creatures ascend from as far as 2km below the surface of the water to the upper reaches of the ocean at night, only to then float back down once the sun rises. This huge movement of organisms – ranging from tiny cockatoo squids to microscopic crustaceans, shifting for food or favourable temperatures – was little known to science until relatively recently.

Tropical Sea Urchins Caught Between A Rock And A Hot Place

2016-08-16T14:07:18+00:00 August 17, 2016|

The balmy waters of the Caribbean could turn into a deadly heat trap for countless tiny creatures. Authors of a new study conducted at the Smithsonian Tropical Research Institute (STRI) in Panama discovered that microscopic sea urchin eggs and larvae may suffer stunting or death when the water temperature spikes just a couple of degrees above normal, adding to the impact of climate change in already warm tropical oceans.

Oyster Archaeology: Ancient Trash Holds Clues To Sustainable Harvesting

2016-08-16T12:29:14+00:00 August 16, 2016|

To see how much the population has changed over the years, Breitburg and other biologists and archaeologists undertook the largest survey to date of any shellfishery, chronicling the Chesapeake Bay's oyster population from almost 800,000 years ago to the present day. The researchers were surprised to find thousands of years during which oyster populations stayed stable – the era of Native Americans.

Global Warming’s Next Surprise: Saltier Beaches

2016-08-12T09:59:02+00:00 August 12, 2016|

Batches of sand from a beach on the Delaware Bay are yielding insights into the powerful impact of temperature rise and evaporation along the shore that are in turn challenging long-held assumptions about what causes beach salinity to fluctuate in coastal zones that support a rich network of sea creatures and plants.

Looking Back Into The Future: Are Corals Able To Resist A Declining pH?

2016-08-08T16:21:42+00:00 August 10, 2016|

Tropical Porites corals adjust their internal pH to enable themselves to form calcium carbonate and grow under elevated carbon dioxide concentrations -- even for a longer period of time. In order to understand the ability of pH regulation in more detail, researchers have used the boron isotope method to examine samples of corals that have existed at natural carbon dioxide vents in Papua New Guinea for decades.

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