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1. Marine Regions for the Bering Sea Integrated Ecosystem Research Program [BSIERP_MarineRegions]
ABSTRACT: A total of 16 marine regions on the Bering Sea shelf and slope were drawn based on a consensus across researchers of the joint Bering Ecosystem Study - Bering Sea Integrated Research Program. ...


2. Fire History Database of the Western United States [HJA-DF005]
To create a database of existing published and unpublished tree-ring reconstructions of fire regimes in forested areas, before circa 1900, west of 100 W longitude in the continental United States, ...


3. Historical Fire Data Summaries for the Central Western Cascades 1910-77 from Archival Sources [HJA-DF001]
This data set's purpose is to determine the location, cause, and date of historic fires in the central Western Cascades.


4. Long-term Stream Chemistry Patterns; Andrews Experimental Forest Watershed Proportional Samples [HJA-CF002]
Long-term records of streamflow chemistry reflect the sampling effort and laboratory analysis initiated in 1968. The study examines nutrient outputs via stream runoff in small watersheds. The original ...


5. Oregon Coastal Range Fire Regime Study [HJA-DF006]
The purpose of this study was to characterize the fire regime of the central Oregon Coast Range at multiple spatial scales and to compare the fire regime of the more recent (ca. 500 years) history ...


6. Accumulation of Nitrogen and Phosphorus in Aboveground Biomass following Fertilization in Two Alpine Tundra Communities [brdlter0032]
To determine whether there are differences in the relative capacity of communities to accumulate nutrients N and P standing crops were measured following fertilization in two alpine tundra communities. ...


7. Effects of Nitrogen and Phosphorus Fertilization on Alpine Plant Species Composition [brdlter0030]
Supplementary Information: The information for the abstract, investigator, Geographic Description: The study plots were located just south of the Niwot Ridge Saddle, in the City of Boulder Watershed. ...


8. Effects of Nitrogen and Phosphorus Fertilization on Alpine Plant Species Composition: Summary Data [lternwt0031]
Supplementary Information: The information for the abstract, investigator, Geographic Description: The study plots were located just south of the Niwot Ridge Saddle, in the City of Boulder Watershed.


9. Effects of nitrogen and phosphorus fertilization on alpine plant phenology: Post-1993 Data [lternwt0034]
The effects of nitrogen, phosphorus, and nitrogen+phosphorus fertilization on phenology of alpine plants was examined. This was a preliminary study to determine if the phenologies of dry meadow plants ...


10. Fluxes of Nitrogen Oxide and Methane from Nitrogen Amended Soils in the Colorado Alpine [lternwt0029]
In order to determine the effect of increased nitrogen availability on fluxes of N2O and CH4 from alpine soils, we measured fluxes of these gases from fertilized and unfertilized soils in two alpine ...


11. Nitrogen transformations in fertilized alpine dry and moist meadow soils [lternwt0033]
Net nitrogen mineralization, nitrification, and microbial nitrogen were measured in dry and moist meadow plots on Niwot Ridge from early June to mid-October 1992. Dry meadow plots in the City of Boulder ...


12. White Sturgeon Habitat in the Lower Columbia River [brdnbsc0001]
Estimates of spawning habitat for white sturgeons Acipenser transmontanus in the tailraces of the four dams on the lower 470 km of the Columbia River were obtained by using the Physical Habitat ...


13. Rotational temperature studies of the hydroxyl airglow layer above Davis, Antarctica. [Davis_OH_airglow]
These OH rotational temperature data are derived from spectra collected with a Czerny-Turner scanning grating spectrometer operating at Davis station (69S, 78E), Antarctica (see Greet et al., 1998; ...


14. Ammonia Oxidation Versus Heterotrophy in Crenarchaeota Populations from Marine Environments West of the Antarctic Peninsula [NSF-ANT08-38996]
Ammonia oxidation is the first step in the conversion of regenerated nitrogen to dinitrogen gas, a 3-step pathway mediated by 3 distinct guilds of bacteria and archaea. Ammonia oxidation and the overall ...


15. RAPID: Linking the Movement Patterns and Foraging Behavior of Humpback Whales to their Prey across Multiple Spatial Scales within the LTER Study Region [NSF-ANT12-50208]
Whales play a central role in the ecology and biogeochemistry of the Southern Ocean. However, little is known regarding their distribution and behavior, in part because of challenges associated with ...


16. Collaborative Research: East Antarctic outlet glacier contributions to the Ross Sea from chronology of detrital grains [NSF-ANT10-43619]
Intellectual Merit: The PIs proposed a provenance study of glacial deposits in the Ross Embayment that will provide a broad scale geochronologic survey of detrital minerals in till to help characterize ...


17. Collaborative Research: Modeling and synthesis study of a natural iron fertilization site in the Southern Drake Passage [NSF-ANT09-48338]
The ocean plays a critical role in sequestering CO2 by exporting fixed carbon to the deep ocean through the biological pump. There is a pressing need to understand the systematics of carbon export ...


18. PostDoctoral Research Fellowship [NSF-ANT10-19305]
Survival of Antarctic notothenioid fishes in the context of global climate change will depend upon the impact of rising oceanic temperatures on their embryonic development, yet little is known regarding ...


19. Southern Ocean Diatom Taphonomy and Paleoproductivity: A Laboratory Study of Silica Degradation and Export [NSF-ANT10-43690]
Intellectual Merit: Diatom abundance in sediment cores is typically used as a proxy for paleo primary productivity. This record is complicated by variable preservation, with most loss occurring in ...


20. Fate of Drilling Fluids during the South McMurdo Sound Project (SMS) of the Antarctic Geological Drilling Program (ANDRILL) [NSF-ANT10-43740]
The PI proposes to utilize computer models used by hydrogeologists to establish the fate and transport of contamination and determine the extent of drilling fluid contamination in the ANDRILL SMS ...


21. Thermochronologic and modelling test for a Mesozoic West Antarctic Plateau [NSF-ANT07-39781]
This project studies formation of the TransAntarctic Mountains (TAM) through numerical modeling based on cooling histories of apatite mineral grains. The TAM are the highest and longest rift-related ...


22. Collaborative Research: Hunting in Darkness: Behavioral and Energetic Strategies of Weddell Seals in Winter [NSF-ANT07-39390]
Intellectual merit: Weddell seals (Leptonychotes weddellii) locate and capture sparsely distributed and mobile prey under shore-fast ice throughout the year, including the austral winter when ambient ...


23. Collaborative Research: Multispecies, Multiscale Investigations of Longterm Changes in Penguin and Seabird Populations on the Antarctic Peninsula [NSF-ANT07-39515]
This five-year project seeks to characterize decadal scale changes in penguin and seabird populations on the Antarctic Peninsula, and to identify the factors driving these long-term changes. Two interconnected ...


24. Collaborative Research: Weddell seals as autonomous sensors of the winter oceanography of the Ross Sea [0838937]
Marine mammals of the Southern Ocean have evolved diverse life history patterns and foraging strategies to accommodate extreme fluctuations in the physical and biological environment. In light of ...


25. Collaborative Research; IPY: Ocean-Ice Interaction in the Amundsen Sea sector of West Antarctica [NSF-ANT07-32804]
The Office of Polar Programs, Antarctic Integrated and System Science Program has made this award to support an interdisciplinary study of the effects of the ocean on the stability of glacial ice ...


26. Mount Erebus Volcano Observatory: Operations, Science and Outreach (MEVO-OSO) [NSF-ANT11-42083]
Intellectual Merit: Mt. Erebus is one of only a handful of volcanoes worldwide that have lava lakes with readily observable and nearly continuous Strombolian explosive activity. Erebus is also unique ...


27. Collaborative Research: Weddell seals as autonomous sensors of the winter oceanography of the Ross Sea [NSF-ANT08-38892]
Marine mammals of the Southern Ocean have evolved diverse life history patterns and foraging strategies to accommodate extreme fluctuations in the physical and biological environment. In light of ...


28. Real-Time Characterization of Adelie Penguin Foraging Environment Using an Autonomous Underwater Vehicle [NSF-ANT10-19838]
The Antarctic Peninsula is among the most rapidly warming regions on earth. Increased heat from the Antarctic Circumpolar Current has elevated the temperature of the 300 m of shelf water below the ...


29. Microtubule Function, Protein Folding, and Embryogenesis in Antarctic Fishes: An Integrative Approach [NSF-ANT09-44517]
Since the advent of Antarctic continental glaciation, the opening of the Drake Passage between South America and the Antarctic Peninsula, and the onset of cooling of the Southern Ocean ~40-25 million ...


30. The Cellular Stress Response in Cold-adapted Organisms: Building Novel Mechanistic Links between Heat Stress, Cell Cycle Arrest and Apoptosis in Antarctic Fishes. [NSF-ANT09-44743]
The research will investigate a novel mechanism by which cold-adapted fishes of the Southern Ocean sense and respond to elevated temperatures. It is hypothesized that sub-lethal heat stress may induce ...


31. Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach - Marine and Quaternary Geosciences [NSF-ANT07-32625]
This award supports a research cruise to perform geologic studies in the area under and surrounding the former Larsen B ice shelf, on the Antarctic Peninsula. The ice shelf's disintegration in 2002 ...


32. Collaborative Research: Biogeochemistry of Cyanobactrial Mats and Hyporheic Zone Microbes in McMurdo Dry Valley Glacial Meltwater Streams [NSF-ANT07-39648]
The glacial streams of the McMurdo Dry Valleys have extensive cyanobacterial mats that are a probable source of fixed C and N to the Valleys. The research will examine the interplay between the microbial ...


33. Collaborative Research: Geochemistry and Microbiology of the Extreme Aquatic Environment in Lake Vida, East Antarctica [NSF-ANT07-39681]
Lake Vida is the largest lake of the McMurdo Dry Valleys, with an approximately 20 m ice cover overlaying a brine of unknown depth with at least 7 times seawater salinity and temperatures below -10 ...


34. Collaborative Research: Geochemistry and Microbiology of the Extreme Aquatic Environment in Lake Vida, East Antarctica [NSF-ANT07-39698]
Lake Vida is the largest lake of the McMurdo Dry Valleys, with an approximately 20 m ice cover overlaying a brine of unknown depth with at least 7 times seawater salinity and temperatures below -10 ...


35. Photoheterotrophic Microbes in the West Antarctic Peninsula Marine Ecosystem [NSF-ANT08-38830]
Light quality and availability are likely to change in polar ecosystems as ice coverage and thickness decrease. How microbes adjust to these and other changes will have huge impacts on the polar marine ...


36. A Broadband Seismic Experiment to Image the Lithosphere Beneath the Gamburtsev Mountains and Surrounding Areas, East Antarctica [NSF-ANT05-37371]
This award supports a seismological study of the Gamburtsev Subglacial Mountains (GSM), a Texas-sized mountain range buried beneath the ice sheets of East Antarctica. The project will perform a passive ...


37. Acoustic Assessment of Southern Ocean Salps and Their Ecosystem Impact [NSF-ANT09-44042]
The importance of gelatinous zooplankton in marine systems worldwide is increasing. In Southern Ocean, increasing salp densities could have a detrimental effect on higher predators, including penguins, ...


38. Application of Detrital Zircon Isotope Characteristics and Sandstone Analysis of Beacon Strata to the Tectonic Evolution of the Antarctic Sector of Gondwana [NSF-ANT09-44532]
Intellectual Merit: The goal of this project is to address relationships between foreland basins and their tectonic settings by combining detrital zircon isotope characteristics and sedimentological ...


39. Linkages among Mitochondrial Form, Function and Thermal Tolerance of Antarctic Notothenioid Fishes [NSF-ANT11-42720]
Antarctic notothenioid fishes have evolved in the Southern Ocean for 10-14 MY under an unusual set of circumstances. Their characteristics include the complete absence of the circulating oxygen-binding ...


40. Genomic Approaches to Resolving Phylogenies of Antarctic Notothenioid Fishes [NSF-ANT08-39007]
The teleost fish fauna in the waters surrounding Antarctica are completely dominated by a single clade of closely related species, the Notothenioidei. This clade offers an unprecedented opportunity ...


41. Linkages among Mitochondrial Form, Function and Thermal Tolerance of Antarctic Notothenioid Fishes [NSF-ANT07-41301]
Antarctic notothenioid fishes have evolved in the Southern Ocean for 10-14 MY under an unusual set of circumstances. Their characteristics include the complete absence of the circulating oxygen-binding ...


42. Modeling and Synthesis Study of a Natural Iron Fertilization Site in the Southern Drake Passage [NSF-ANT09-48357]
The ocean plays a critical role in sequestering CO2 by exporting fixed carbon to the deep ocean through the biological pump. There is a pressing need to understand the systematics of carbon export ...


43. The Role of Snow Patches on the Spatial Distribution of Soil Microbial Communities and Biogeochemical Cycling in the Antarctic Dry Valleys [NSF-ANT08-38850]
Two models have been proposed to describe controls over microbial biogeography. One model proposes that microbes are ubiquitously distributed across the global environment, and that environmental ...


44. Seasonal Evolution of Chemical and Biological Variability in the Ross Sea [NSF-ANT08-38948]
Abstract This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). The Ross Sea is a highly productive area within the Southern Ocean, but it experiences ...


45. The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula [NSF-ANT08-38773]
The near shore environments of the western Antarctic Peninsula (WAP) harbor extremely high densities of mesograzers (small invertebrate predators approximately 1-25 mm in length) such as benthic amphipods, ...


46. The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula [NSF-ANT08-38776]
The near shore environments of the western Antarctic Peninsula (WAP) harbor extremely high densities of mesograzers (small invertebrate predators approximately 1-25 mm in length) such as benthic amphipods, ...


47. LTER Georgia Coastal Ecosystems - May 2004 CTD, PAR, oxygen and chlorophyll profiles for the Georgia Coastal Ecosystems Intracoastal Waterway transect [newpg1_LTER_GCE_PHY_GCEM_0406b2]   PARENT DIF
Two hydrographic surveys were performed on May 28, 2004, along the Intracoastal Waterway between the Altamaha River south of Wolf Island and Sapelo Sound (Intracoastal Waterway Transect, GCE-IC). ...


48. Weddell seals as autonomous sensors of the winter oceanography of the Ross Sea [NSF-ANT08-38911]
Marine mammals of the Southern Ocean have evolved diverse life history patterns and foraging strategies to accommodate extreme fluctuations in the physical and biological environment. In light of ...


49. Alternative Nutritional Strategies in Antarctic Protists [NSF-ANT08-38955]
This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). Most organisms meet their carbon and energy needs using photosynthesis (phototrophy) or ingestion/assimilation ...


50. Caribou-Poker Creeks Research Watershed: Hourly Precipitation data, 1988 to Present [BNZ_LTER_Caribou-Poker_Precip]
Precipitation is measured at many sites within CPCRW using TE525 tipping buckets. These sensors are able to detect .254mm of precipitation and record hourly totals of rainfall or throughfall. It should ...


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