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Highlights include enriched and related content of notable journal articles presented on Eos org AGU org AGU On Demand and in AGU journals

Strong biotic influences on regional patterns of climate regulation services

Editor's Highlights—   A number of biogeochemical fluxes – from carbon sequestration to water balance – are also ecosystem services. This paper links the two in an assessment of the factors that influence ecosystems services provided by temperate forests. Specifically, the authors perform a statistical.... more

What’s the Average Methane Isotope Signature in Arctic Wetlands?

Terri Cook, Freelance Writer

From Research Spotlights— Aircraft measurements confirm that methane emissions from northern European wetlands exhibit a uniform regional carbon isotopic signature, despite considerable ground-level heterogeneity.  Although methane (CH4) is a potent greenhouse gas, the relative contributions.... more

Why Is There So Much Carbon Dioxide in Rivers?

Sarah Witman, Freelance Writer

From Research Spotlights— Observations of carbon dioxide oversaturation in the freshwater of the world led scientists to study its underlying causes at more than 100 field locations across the nation. Studies have shown that many of the world’s freshwater rivers and streams are oversaturated.... more

High Arctic Emissions of a Strong Greenhouse Gas

Sarah Stanley, Freelance Writer

From Research Spotlights— Isotope data bring scientists one step closer to revealing the microbial processes behind nitrous oxide emission in the tundra.  Nitrous oxide, often called “laughing gas,” is perhaps most famous for its use as an anesthetic. However, it is also a powerful greenhouse.... more

Carbon balance in subglacial hydrochemical systems

Editors’ Highlight—This paper addresses a hotly-debated topic as to whether rock weathering below glaciers is a critical and long-term source of atmospheric CO2 consumption or whether some of the CO2 consumed may be from decomposing organic material. The authors compared a model of subglacial pH and.... more

What Proportion of River Nutrients Reach the Open Sea?

Terri Cook, Freelance Writer

From Research Spotlights—Results of the first geographically based estimates of river nutrient supply indicate that 75% of dissolved nitrogen and 80% of phosphorous reach the open ocean. Although it is widely recognized that the world’s rivers deliver substantial amounts of dissolved nitrogen.... more

Declining spatial efficiency of global cropland nitrogen allocation

Editors’ Highlight The efficiency of use of fertilizer nitrogen is critical for the increasing global food production while reducing nitrogen pollution.  This paper establishes historical records of cropland nitrogen budgets and shows how the regional and temporal trends affect the efficiency of nitrogen.... more

Tiny Creatures Form Massive, Bright Ring Around Antarctica

Sarah Stanley, Freelance Writer

From Research Spotlights— Dense algae populations in the Great Calcite Belt could cause carbon dioxide release from the ocean into the atmosphere. Every year during the austral summer, satellite imagery reveals a wide belt of unusually reflective seawater encircling Antarctica between about.... more