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Recent changes in production in oligotrophic Uinta Mountain lakes, Utah, identified using paleolimnology
oligotrophic Uinta Mountain lakes Utah
2014/11/28
We use multiple proxies from lake sediment records of six remote alpine lakes in the Uinta Mountains, Utah,
to investigate primary production and potential drivers of changes in trophic status over t...
Recent changes in production in oligotrophic Uinta Mountain lakes, Utah, identified using paleolimnology
production in oligotrophic Mountain lakes Utah identified paleolimnology
2014/10/16
We use multiple proxies from lake sediment records of six remote alpine lakes in the Uinta Mountains, Utah, to investigate primary production and potential drivers of changes in trophic status over th...
Unprecedented slow growth and mortality of the rare colonial cyanobacterium, Nostoc zetterstedtii, in oligotrophic lakes
Unprecedented slow growth rare colonial cyanobacterium
2014/4/4
Centimeter-large colonies of Nostoc zetterstedtii from a Swedish oligotrophic lake had the lowest growth and
mortality rates of any studied temperate macrophyte. Annual growth rates at two shallow si...
Large clean mesocosms and simulated dust deposition: a new methodology to investigate responses of marine oligotrophic ecosystems to atmospheric inputs
marine oligotrophic ecosystems atmospheric inputs Large clean mesocosms
2011/11/14
Intense Saharan dust deposition occurs over large oligotrophic areas in the Mediterranean Sea and in the Tropical Atlantic, and its impact on the biogeochemical functioning of such oligotrophic ecosys...
Physical factors influencing the distribution of a top predator in a subtropical oligotrophic estuary
Physical factors top predator a subtropical oligotrophic estuary
2014/4/18
We used longline fishing to determine the effects of distance from the ocean, season, and short-term variation in abiotic conditions on the abundance of juvenile bull sharks (Carcharhinus leucas) in a...
Unusually negative nitrogen isotopic compositions (δ15N) of mangroves and lichens in an oligotrophic,microbially-influenced ecosystem
negative nitrogen isotopic compositions mangroves lichens microbially-influenced ecosystem
2010/1/18
Extremes in δ15N values in mangrove tissues and lichens (range =+4 to −22‰) were measured from a mangrove forest ecosystem located on Twin Cays, offshore islands in Belize, Central America. The ...
Palaeolimnological assessment of environmental change over the last two centuries in oligotrophic Lake Nohipalu Valgjärv,southern Estonia
lake sediment diatoms 210Pb chronology reference conditions Lake Nohipalu Valgjä rv
2009/10/21
The main objectives of this study were to reconstruct the environmental conditions for a small oligotrophic lake during the last two centuries, to determine if the environment of the lake was anthropo...
Short-term changes in particulate fluxes measured by drifting sediment traps during end summer oligotrophic regime in the NW Mediterranean Sea
Short-term changes particulate fluxes drifting sediment traps oligotrophic regime
2010/1/20
Short-term changes in the flux of particulate matter were determined in the central north western Mediterranean Sea (near DYFAMED site) using drifting sediment traps at 200 m depth in the course of th...
Ammonium regeneration and nitrification rates in the oligotrophic Atlantic Ocean: Implications for new production estimates
Ammonium regeneration nitrification rates the oligotrophic Atlantic Ocean new production estimates
2014/4/21
N regeneration was measured on a transect of the North and South Atlantic, from the United Kingdom to the Falkland Islands, that included extreme oligotrophic conditions. NH4+ and NO{2 oxidation rates...
Relative influence of nitrogen and phosphorous availability on phytoplankton physiology and productivity in the oligotrophic sub-tropical North Atlantic Ocean
nitrogen and phosphorous availability phytoplankton physiology and productivity the oligotrophic sub-tropical North Atlantic Ocean
2014/4/21
Nutrient addition bioassay experiments were performed in the low-nutrient, low-chlorophyll oligotrophic subtropical North Atlantic Ocean to investigate the influence of nitrogen (N), phosphorus (P), a...
Relative influence of nitrogen and phosphorous availability on phytoplankton physiology and productivity in the oligotrophic sub-tropical North Atlantic Ocean
Relative influence of nitrogen and phosphorous availability on phytoplankton physiology and productivity in the oligotrophic sub-tropical North Atlantic Ocean
2014/4/18
Nutrient addition bioassay experiments were performed in the low-nutrient, low-chlorophyll oligotrophic subtropical North Atlantic Ocean to investigate the influence of nitrogen (N), phosphorus (P), a...
Ammonium regeneration and nitrification rates in the oligotrophic Atlantic Ocean: Implications for new production estimates
Ammonium regeneration nitrification rates oligotrophic Atlantic Ocean Implications for new production estimates
2014/4/18
N regeneration was measured on a transect of the North and South Atlantic, from the United Kingdom to the Falkland Islands, that included extreme oligotrophic conditions. NH4+ and NO{2 oxidation rates...
Isotopic heterogeneity and cycling of organic nitrogen in the oligotrophic ocean
Isotopic heterogeneity cycling of organic nitrogen oligotrophic ocean
2014/4/22
We measured the nitrogen (N) isotopic composition (δ15N) of a large set (n = 38) of high-molecular-weight (HMW) dissolved organic nitrogen (DON) samples isolated from the tropical and subtropical Nort...
Nitrogen fixation by unicellular diazotrophic cyanobacteria in the temperate oligotrophic North Pacific Ocean
Nitrogen fixation unicellular diazotrophic cyanobacteria temperate oligotrophic North Pacific Ocean
2014/4/22
N2 fixation has been understudied in marine environments outside of the subtropical and tropical oceans and where water temperatures are typically below 20-25°C. We identified nifH phylotypes and meas...
Characterization of methanogenic Archaea and stable isotope fractionation during methane production in the profundal sediment of an oligotrophic lake (Lake Stechlin, Germany)
methanogenic Archaea stable isotope fractionation during methane production profundal sediment an oligotrophic lake
2014/4/22
The methanogenic archaeal community, methane production, and carbon isotopic fractionation were studied in the profundal sediments of oligotrophic Lake Stechlin. Because the water column of oligotroph...