Now showing items 1-10 of 325
Linkages among runoff, dissolved organic carbon, and the stable oxygen isotope composition of seawater and other water mass indicators in the Arctic Ocean
(American Geophysical Union, 2005-12-07)
Concentrations of dissolved organic carbon (DOC) and δ18O values have been determined following sampling of runoff from a number of major arctic rivers, including the Ob, Yenisey, Lena, Kolyma, Mackenzie and Yukon in ...
(American Meteorological Society, 2010-04-15)
Corrigendum: Sokolov, A., and Coauthors, 2009: Probabilistic forecast for twenty-first-century climate based on uncertainties in emissions (without policy) and climate parameters. J. Climate, 22, 5175–5204.
Slowed biogeochemical cycling in sub-arctic birch forest linked to reduced mycorrhizal growth and community change after a defoliation event
Sub-arctic birch forests (Betula pubescens Ehrh. ssp. czerepanovii) periodically suffer large-scale defoliation events caused by the caterpillars of the geometrid moths Epirrita autumnata and Operophtera brumata. Despite ...
Effects of fertilizer on inorganic soil N in East Africa maize systems : vertical distributions and temporal dynamics
(John Wiley & Sons, 2016-09-02)
Fertilizer applications are poised to increase across sub-Saharan Africa (SSA), but the fate of added nitrogen (N) is largely unknown. We measured vertical distributions and temporal variations of soil inorganic N following ...
Toward a predictive understanding of Earth’s microbiomes to address 21st century challenges
(American Society for Microbiology, 2016-05-13)
Microorganisms have shaped our planet and its inhabitants for over 3.5 billion years. Humankind has had a profound influence on the biosphere, manifested as global climate and land use changes, and extensive urbanization ...
Changes in substrate availability drive carbon cycle response to chronic warming
As earth's climate continues to warm, it is important to understand how the capacity of terrestrial ecosystems to retain carbon (C) will be affected. We combined measurements of microbial activity with the concentration, ...
The savory swimmer swims north : a northern range extension of the blue crab Callinectes sapidus?
Worldwide, climate-change is shifting species distributions poleward. Here I present recent (2012-2014) observations of the blue crab, Callinectes sapidus, in the Gulf of Maine (GoM), north of its historical range of Cape ...
Continental-scale homogenization of residential lawn plant communities
Residential lawns are highly managed ecosystems that occur in urbanized landscapes across the United States. Because they are ubiquitous, lawns are good systems in which to study the potential homogenizing effects of urban ...
Farm management, not soil microbial diversity, controls nutrient loss from smallholder tropical agriculture
(Frontiers Media, 2015-03-04)
Tropical smallholder agriculture is undergoing rapid transformation in nutrient cycling pathways as international development efforts strongly promote greater use of mineral fertilizers to increase crop yields. These changes ...
Long-term forest soil warming alters microbial communities in temperate forest soils
(Frontiers Media, 2015-02-13)
Soil microbes are major drivers of soil carbon cycling, yet we lack an understanding of how climate warming will affect microbial communities. Three ongoing field studies at the Harvard Forest Long-term Ecological Research ...