Weekly Roundup 20

Written by on April 19, 2013 in Marine Life

Other stories worth reading this weekend:

A “To Do” List for the Ocean” from Ocean Conservancy

Check out this blog post from the Ocean Conservancy that discusses the practicality of the National Ocean Policy. The write that the policy is basically a big ocean “to do” list with over 50 items designed to make better use of the ocean in terms of both conservation and the economy.

Age matters to Antarctic clams” from British Antarctic Survey

For Antarctic clams (Laternula elliptica), age is a key factor in their ability to adapt to climate change. These clams are long-lived and thrive in the cold, oxygen-right Antarctic waters. Researchers found that the younger clams (around three years old) tried to relocated when they sensed warmer temperatures, but the older (18 years) clams stayed put. This is because the older the clam, the more sedentary it becomes. But, it is also the older clams that reproduce so these findings suggest that Antarctic clams will experience a population decline.

An open letter to the managing director of Coca-Cola Amatil” from ABC

Check out this slightly controversial open letter to the managing director of Coca-Cola, Terry Davis, from the CEO of Greenpeace Australia, David Ritter. In addition to asking Mr. Davis why he called to cops on him, Mr. Ritter accuses Coca-Cola of hating seabirds.

Tiger shark found in the bahamas.

Tiger shark found in the bahamas. Photo credit: WIlly Volk via photopin cc.

Apex Predator” from PopSci

Check out this great article about shark tagging in South Florida with brand new, homemade tags. This new tag is better than current alternatives because it is much cheaper and can last for years, maybe decades, attached to a shark. It will also provide about a thousand times more data.

Ban calls for concerted global action to save world’s oceans from pollution, acidification” from UN News

Last week, Secretary-General Ban Ki-moon called on world leaders to take stronger action to protect with world’s oceans as pollution, overfishing, climate change and acidification threaten both life and the economy. “It is time to take stronger, more pragmatic and more concerted effort to protect our oceans,” he said.

DNA tests of Greenland cod change history” from World Fishing & Aquaculture

Genetic analysis of old fish samples reveals that the fish in Greenland’s ‘great cod boom’ in the 1960s did not come from Iceland like previously thought. The results show that the boom was a result of a big increase in a local Greenland stock. Hopefully these findings will make it easier to better manage current Greenland cod stocks.

Federal Court Rules in Favor of Oceana on Management of Northern Anchovy” from Oceana

A federal judge ruled in favor of international advocacy group Oceana, saying that the National Marine Fisheries Service (NMFS) illegally adopted new regulations governing the management of the northern subpopulation of northern anchovy. Specifically, they failed to incorporate advice of NMFS scientists when amending the management plans. While this was a big success, Oceana is still concerned about other forage species like Pacific sardine, mackerel and squid.

Harnessing the power of fish by-products” from World Fishing & Aquaculture

The fishing industry one of the world’s most wasteful food production methods when you compare how much gets discarded to how much was initially caught. In fact, 36-43 percent of the total body weight of pelagic fish is consumed, leaving about 60 percent as waste. But instead of simply discarding it, all of that waste could be used to make a huge profit.

Olympic Coast Sanctuary report is ‘first step’ in addressing effects of climate change” from NOAA

A new report on NOAA’s Olympic Coast National Marine Sanctuary reviews the potential effects of climate change on the habitats and life in the sanctuary and provides management recommendations. The report states that the biggest impacts will be from sea level rise, extreme weather events and the associated coastal erosion.

Cobia swimming in a cage.

Cobia swimming in a cage. Photo credit: NOAA.

Putting Larval Cobia To The Acid Test” from RSMAS

A new study from the Rosenstiel School of Marine and Atmospheric Science studied the effect of ocean acidification on fish. By studying the larvae of cobi (Rachycentron canadum), large tropical fish, they found that the fish were remarkably resistant to extreme acidification scenarios in terms of growth, development and activity. While the more extreme scenarios caused a delay in development, the modest scenarios appear to have caused a significant increase in otolith (fish ‘ear bones’) size.

SOEST and DAR researchers provide new understanding of white shark movement” from U Hawaiʻi at Mānoa

A new paper discusses the rare occurrence of white sharks in Hawaiian waters and suggests a new way to distinguish between white sharks and close relatives. This information is important for management purposes. It reveals that the few white sharks seen in Hawaiian waters are migrants from California and Mexico populations and, based on the size, there are no permanent residents.

Talking About Fish on the Oregon Coast” from PEW Environment

Commercial fishermen, conservationists and foodies all benefit from fresh, sustainable seafood. These groups all met last moth at the Wild Seafood Exchange to share ideas about fish and ways to strengthen the connection between fish and seafood retailers.

Olympic Coast National Marine Sanctuary.

Olympic Coast National Marine Sanctuary. Photo credit: NOAA.

Copyright © 2013 by Marine Science Today, a publication of Marine Science Today LLC.

About the Author

About the Author: Emily Tripp is the Publisher and Editor of MarineScienceToday.com. She holds marine science and biology degrees from the University of Miami's Rosenstiel School of Marine and Atmospheric Science and a Master of Advanced Studies degree in Marine Biodiversity and Conservation from Scripps Institution of Oceanography. When she's not writing about marine science, she's probably running around outside or playing with her dog. .


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