Reversal of the net dinitrogen gas flux in coastal marine sediments

Article Abstract:

A sediment core data from Narragansett Bay, U.S., demonstrate that heterotrophic marine sediments can switch from a net sink to a net source of nitrogen, suggesting that some estuaries will not remove nitrogen from the water column.

Marine sediments, Narragansett Bay

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Redfield ratios: the uniformity of elemental ratios in the oceans and the life they contain underpins our understanding of marine biogeochemistry

Article Abstract:

The concept of Redfield is fundamental in understanding the biogeochemistry of the oceans. The basic problem with Redfield is that it is an elegant empirical observation that has no simple reductionst explanation.

Biogeochemistry

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Lack of concern deepens the ocean's problems

Article Abstract:

The authors express their concern about the crisis in the world's oceans. They discuss the effect of human impacts such as pollution, coastal development and habitat alternation on marine ecosystems.

Pollution

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