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1. Assessment of the importance of biological nitrogen fixation in the terrestrial ecosytem: Nitrogen fixation rates of Nostoc cyanobacterial mats in the Garwood Valley and at Cape Royds [K053_1986_1987_NZ_1]
Microbes with the nitrogenase enzyme on mosses and soils, particularly the cyanobacteria Nostoc, were examined to investigate the extent and magnitude of the nitrogen fixation process. Sample cores ...


2. The fate of primary production in Antarctic sea ice: the role of metazoan grazers. [ASAC_1328]
Crustaceans are an important component of the Antarctic marine ecosystem. Large numbers live in or close to the sea-ice cover, using it as a refuge from predation and a source of food. However, the ...


3. The role of the Southern Ocean in the carbon cycle [ASAC_133]
Metadata record for data from ASAC Project 133 See the link below for public details on this project. Surface carbon dioxide (CO2) observations are integral to understanding the role of the Southern ...


4. Samples collected for HPLC pigments, microscopy and flow cytometry for the SAZ-SENSE project [ASAC_2720_filtration]   PARENT DIF
Metadata record for data from ASAC Project 2720 See the link below for public details on this project. The overall objective is to characterize Southern Ocean marine ecosystems, their influence on ...


5. Cold adaptation and functionality of the Antarctic Coastal Benthic Zones [ASAC_1165]
Antarctic sediments and sea-ice are important regulators in global biogeochemical and atmospheric cycles. These ecosystems contain a diverse range of bacteria whose biogeochemical roles remains largely ...


6. Latitudinal Gradient Project - Australian contributions [LGP]
This record relates to the Australian component of the Latitudinal Gradient Project. The LGP is largely a New Zealand, US and Italian venture, but a small contribution has been made by Australian ...


7. A Study of the Nitrogen-fixing Microbiota of Macquarie Island Plant Communities [ASAC_194]
The nitrogen fixing biota of Macquarie Island are dominated by cyanobacteria growing epiphytically or symbiotically with plants or lichens. Highest rates of acetylene reduction (N-fixation) were found ...


8. Exopolysaccharides from Antarctic bacteria [ASAC_2348]
Exopolysaccharide (EPS) is complex sugar made by many microbes in the Antarctic marine environment. This project seeks to understand the ecological role of microbial EPS in the Southern Ocean, where ...


9. Geochemical and biological linkages in glacier ecosystems [ASAC_2750]
Metadata record for data from ASAC Project 2750 See the link below for public details on this project. Glaciers are not frozen rivers, but another aquatic ecosystem in the cryosphere. Most life on ...


10. Physical and biogeochemical dynamics of the subantarctic zone [ASAC_2720]   CHILD DIFs
This metadata record is a 'Parent' metadata record for ASAC project 2720. See the link for the related 'Child' metadata records. The overall objective is to characterise Southern Ocean marine ecosystems, ...


11. Stable isotope analysis of invertebrate epifauna collected around Casey station, East Antarctica, for the TRENZ program. [ASAC_2948_TRENZ_Stable_Isotopes]   PARENT DIF
A variety of epifaunal invertebrates were collected from hard substrates and soft sediment habitats at various sites in the Windmill Islands near Casey station in East Antarctica. Collected fauna ...


12. Albatross Bay Nutrient Data 1992 [CSIRO_albatross_nutrient]
One year of sampling was undertaken in 1992 at four sites in Albatross Bay, Gulf of Carpentaria, measuring nitrate and nitrite, phosphate and silicate levels in the water column. This ...


13. Effects of Prescribed Fire on Sediment and Nutrient Loads in Southeastern U.S. Forests [USDA_effectsofprescribedfire]
We used the nutrient cycling model NuCM (Nutrient Cycling Model) as our platform for predicting stream and soil nutrient response after forest management with prescribed fire. Study sites were located ...


14. Riparian Litter Inputs to Streams in the Central Oregon Coast Range - Data [USGS_FRESC-0298_RiparianLitterInputs]
ABSTRACT: This data set consists of twenty five spreadsheets that cover twelve months of "sorting" data on litter collected in Oregon Coast Range riparian forests, total carbon and nitrogen concentrations ...


15. Linking Land, Air, and Water Management in the Southern Everglades and Coastal Zone to Water Quality and Ecosystem Restoration [USGS_SOFIA_LinkingLandAirManagement]   CHILD DIFs
The approaches used will be extensions of previous efforts by the lead investigators, whereby we will enhance our abilities to address land management and ecosystem restoration questions. Major changes ...


16. Bermuda Atlantic Time-Series Study (BATS) Zooplankton Census (OBIS) [OBIS.BATS]   PARENT DIF
Abundance and taxonomic analysis of major zooplankton and micronekton groups collected monthly, in both the day and night, from 1994 to 2000 in the Sargasso Sea (31 deg 40 min N, 64 deg 10 min W). ...


17. Leaf CNP and isotopes 13C 15N and 18O from ITEX Cross Site Comparison [leaf_cnp_and_isotopes_13c__15n_and_18o_from_itex_cross_site_comparison]
Study sites: Toolik Lake Field Station Alaska, USA 68.63 N, 149.57 W; Atqasuk, Alaska USA 70.45 N, 157.40 W; Barrow, Alaska, USA 71.30 N, 156.67 W; Latnjajaure, Sweden 68.35 N, 18.50 E; Falls Creek, ...


18. Soil Nitrogen Availability_Ion Exchange Membranes [soil_nitrogen_availability_ion_exchange_membranes]
Estimates of soil nitrogen availability between June 28 and August 9, 2011 in three contrasting white spruce habitats near the Arctic treeline: riverside terrace, forest and treeline.


19. White Spruce Needle Gas Exchange, Nitrogen Concentration, 13C and 15N [white_spruce_needle_gas_exchange_nitrogen_concentration_13c_and_15n]
Weekly measurements of light-saturated net photosynthesis, dark respiration, nitrogen concentration, 13C and 15N of two-year-old white spruce needles in three contrasting habitats during the 2010 ...


20. DISCOVERY-FLEXICON: FLEXIbility and CONstraints in life histories [GB-NERC-BAS-PDC-00516]
FLEXICON is investigating the life-cycles of some of the world''s most durable and abundant organisms that are vital to the Earth''s systems. Marine organism in the Southern Ocean must endure one ...


21. Chesapeake Bay Program [epa_cbprogram]   CHILD DIFs
EPAs Chesapeake Bay Program Office coordinates the goals of the Chesapeake Bay Program (CBP) with the other offices located in EPA's regional office in Philadelphia, Pennsylvania. The CBP is a unique ...


22. Bermuda Atlantic Time-Series Study (BATS) Zooplankton Census [vims_BATS]   CHILD DIFs
This study of plankton diversity at the Bermuda Atlantic Time-series Study (BATS) site is part of an initiative to create an online atlas of marine diversity, the Ocean Biogeographic ...


23. Major-Ion, Nutrient, and Trace-Element Concentrations in the Steamboat Creek Basin [WIR_98_4105]
In September 1996, a water-quality study was done by the U.S. Geological Survey, in coordination with the U.S. Forest Service, in headwater streams of Steamboat Creek, a tributary to the North Umpqua ...


24. Modeling Water Quality in the Tualatin River, Oregon, 1991-1997 [WRIR_01_4062]
The calibration of a model of flow, temperature, and water quality in the Tualatin River, Oregon, originally calibrated for the summers of 1991 through 1993, was extended to the summers of 1991 through ...


25. Upper Klamath Lake Basin Nutrient-Loading Study-Assessment of Historic of Flows in the Williamson and Sprague Rivers [WRIR_98_4198]
The Williamson River Basin, located in south-central Oregon, has a drainage area of approximately 3,000 square miles. The Sprague River, which flows into the Williamson River Basin, has a drainage ...


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