Non-biogenic fixed nitrogen in Antarctic surface waters
نویسندگان
چکیده
منابع مشابه
Multidecadal warming of Antarctic waters.
Decadal trends in the properties of seawater adjacent to Antarctica are poorly known, and the mechanisms responsible for such changes are uncertain. Antarctic ice sheet mass loss is largely driven by ice shelf basal melt, which is influenced by ocean-ice interactions and has been correlated with Antarctic Continental Shelf Bottom Water (ASBW) temperature. We document the spatial distribution of...
متن کاملNonpoint Pollution of Surface Waters with Phosphorus and Nitrogen
Agriculture and urban activities are major sources of phosphorus and nitrogen to aquatic ecosystems. Atmospheric deposition further contributes as a source of N. These nonpoint inputs of nutrients are difficult to measure and regulate because they derive from activities dispersed over wide areas of land and are variable in time due to effects of weather. In aquatic ecosystems, these nutrients c...
متن کاملReducing Nitrogen Loads from Agricultural Lowland to Surface Waters
322 Unfertilized buff er strips (BS) are widely accepted to reduce nitrogen (N) loads from agricultural land to surface water. However, the relative reduction of N load or concentration (BS eff ectiveness, BSE), varies with management and local conditions, especially hydrogeology. We present novel experimental evidence on BSE for 5-m-wide grass BS on intensively drained and managed plain agricu...
متن کاملCase 2 Antarctic Coastal Waters: the Bio-optical Properties of Surface Meltwater
In the Antarctic region, melting of sea ice and continental glaciers can create a surface lens of meltwater in coastal waters. When ice melts, particles concentrated within the ice are released into the water and can cause turbidity. Under these conditions, the optical properties of the water column are no longer related primarily to the phytoplankton and associated breakdown products (i.e., Ca...
متن کاملAntarctic new particle formation from continental biogenic precursors
Over Antarctica, aerosol particles originate almost entirely from marine areas, with minor contribution from long-range transported dust or anthropogenic material. The Antarctic continent itself, unlike all other continental areas, has been thought to be practically free of aerosol sources. Here we present evidence of local aerosol production associated with melt-water ponds in continental Anta...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1978
ISSN: 0028-0836,1476-4687
DOI: 10.1038/276097b0