As the Galápagos hot spot is approached from the west along the Galápagos Spreading Center there are systematic increases in crustal thickness and in the K/Ti, Nb/Zr, ³He/⁴He, H₂O, and Na₂O content of lavas recovered from the spreading axis. These increases correlate with progressive transitions from rift valley to axial...
Nitrogen incorporation from red alder (Alnus rubra Bong.) into an Oregon upland mesic forest soil was studied by tracing the fate of 15N added as 15N-labeled alder leaf litter. The recovery of 15N in vegetation, litter, light- and heavy-fractions of the soil, the chloroform-labile (microbial biomass) pool, and the whole...
The degree to which carbon concentration (CC) of woody detritus varies by tree taxa, stage of decay, tissue
type (i.e., bark versus wood), and vertical orientation was examined in samples of 60 tree species
from the Northern Hemisphere. The mean CC of 257 study samples was 49.3% with a range...
The International Food Policy Research Institute (IFPRI) and the International Center for Living Aquatic Resources Management (ICLARM), in collaboration with the Food and Agricultural Organization of the United Nations (FAO), are presently attempting to model supply and demand for highly aggregated fish categories within the context of IFPRI's IMPACT global...
A new dataset synthesizes in situ and remote sensing observations from research ships deployed to the southeastern tropical Pacific stratocumulus region for 7 years in boreal fall. Surface meteorology, turbulent and radiative fluxes, aerosols, cloud properties, and rawinsonde profiles were measured on nine ship transects along 20°S from 75° to...
DYNAMO and TOGA-COARE observations and reanalysis-based surface flux products are
used to test theories of atmosphere-ocean interaction that explain the Madden-Julian
Oscillation (MJO). Negative intraseasonal outgoing longwave radiation, indicating deep
convective clouds, is in phase with increased surface wind stress, decreased solar heating,
and increased surface turbulent heat flux—mostly evaporation—from...
DYNAMO and TOGA-COARE observations and reanalysis-based surface flux products are
used to test theories of atmosphere-ocean interaction that explain the Madden-Julian
Oscillation (MJO). Negative intraseasonal outgoing longwave radiation, indicating deep
convective clouds, is in phase with increased surface wind stress, decreased solar heating,
and increased surface turbulent heat flux—mostly evaporation—from...
Full Text:
. de Szoeke1, James B. Edson2, June R. Marion1, ChristopherW. Fairall3, and 3
Ludovic Bariteau3 4
The International Food Policy Research Institute (IFPRI), the World Fish Center (ICLARM), and the Food and Agriculture Organization (FAO), are collaborating to incorporate fish into IMPACT, a global model of food supply and demand that estimates market-clearing prices for 28 commodities in 36 regions. Results of the projections to 2020...
The structure of global supply and demand for fish has changed dramatically over the past few decades. Traditional marine fisheries increased and reached its peak in the 1990s, while aquaculture has expanded rapidly since the 1970s, making it one of the fastest growing sectors in all of agriculture. Fish has...