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Plumbing the Global Carbon Cycle: Integrating Inland Waters into the Terrestrial Carbon Budget
A BSTRACTBecause freshwater covers such a small fraction of the Earth’s surface area, inland freshwater ecosystems (particularly lakes, rivers, and reservoirs) have rarely been considered as…
The global abundance and size distribution of lakes, ponds, and impoundments
One of the major impediments to the integration of lentic ecosystems into global environmental analyses has been fragmentary data on the extent and size distribution of lakes, ponds, and…
Archaeal nitrification in the ocean
- C. Wuchter, B. Abbas, J. S. Sinninghe Damsté
- Environmental ScienceProceedings of the National Academy of Sciences
- 15 August 2006
Analysis of Atlantic waters of the upper 1,000 m, where most of the ammonium regeneration and oxidation takes place, showed that crenarchaeotal amoA copy numbers are also 1–3 orders of magnitude higher than those of bacterial amoB, suggesting a major role for Archaea in oceanic nitrification.
Mangrove production and carbon sinks: A revision of global budget estimates
Mangrove forests are highly productive but globally threatened coastal ecosystems, whose role in the carbon budget of the coastal zone has long been debated. Here we provide a comprehensive synthesis…
Linking diagenetic alteration of amino acids and bulk organic matter reactivity
Examination of amino acids in particulate samples from a variety of marine environments (fresh phytoplankton to deep‐sea sediments) revealed systematic compositional changes upon progressive…
Amino acids and hexosamines as indicators of organic matter degradation state in North Sea sediments
Sediment cores from six stations in the eastern North Sea were analyzed for protein amino acids, the nonprotein amino acids β‐alanine and γ‐ aminobutyric acid and the hexosamines galactosamine and…
Coastal hypoxia and sediment biogeochemistry
The intensity, duration and frequency of coastal hypoxia (oxygen concentration <63µM) are increasing due to human alteration of coastal ecosystems and changes in oceanographic conditions due to…
Production and consumption of biological particles in temperate tidal estuaries
The proposition that estuaries are heterotrophic systems, and become more so when nutrient inputs are higher, is confirmed, and a general equation relating respiration to production is proposed as log R = 0.081 + 1.02 log P (R and P in gC m(-2) yr(-1)).
Seagrass sediments as a global carbon sink: Isotopic constraints
Seagrass meadows are highly productive habitats found along many of the world's coastline, providing important services that support the overall functioning of the coastal zone. The organic carbon…
The fate of intertidal microphytobenthos carbon: An in situ 13C‐labeling study
- J. Middelburg, C. Barranguet, H. Boschker, P. Herman, T. Moens, C. Heip
- Environmental Science
- 1 September 2000
A central role for microphytobenthos in moderating carbon flow in coastal sediments is indicated, and C-13 assimilation increased until day 3, and carbon isotope analysis of polar lipid derived fatty acids specific for bacteria showed rapid, significant transfer from benthic algae to bacteria.