In 2003, haddock on Georges Bank experienced the largest baby boom ever documented for the stock, with an estimated 800 million new young fish entering the population. With typical annual averages of 50 to 100 million new fish in the last few decades, fisheries biologists have been puzzled by the huge increase and its ramifications for stock management. They have been looking for answers and may have found one — healthy adults.
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Ecosystems are constantly exchanging materials through the movement of air in the atmosphere, the flow of water in rivers and the migration of animals across the landscape. People have also established themselves as another major driver of connectivity among ecosystems. A new article looks at how human influences interact with natural processes to influence connectivity at the continental scale.
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The humble earthworm provides a new sensitive and detailed picture of what is going on in our contaminated soil ecosystems. New research shows that copper contamination has a detrimental effect by interfering with the energy metabolism of the exposed invertebrates and that different pollutants have unique molecular effects, with implications for both monitoring and remediation of toxins.
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A new study helps explain a cyclic increase and decrease of jellyfish populations, which transformed parts of the Bering Sea — one of the United States’ most productive fisheries — into veritable jellytoriums during the 1990s.
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A new method for assessing environmental contamination after oil spills is in danger of being applied in situations where it doesn’t work and might produce false conclusions.
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