Eared grebe diet on Great Salt Lake, Utah, and competition with the commercial harvest of brine shrimp cysts

2013 ◽  
Vol 77 (7) ◽  
pp. 1380-1385 ◽  
Author(s):  
Anthony J. Roberts ◽  
Michael R. Conover
Keyword(s):  
Brine Shrimp ◽  
Salt Lake ◽  
Great Salt Lake ◽  
Eared Grebe ◽  
Commercial Harvest ◽  
Brine Shrimp Cysts

Multi-Substrate Radiocarbon Data Constrain Detrital and Reservoir Effects in Holocene Sediments of the Great Salt Lake, Utah

Radiocarbon ◽  
2019 ◽  
Vol 61 (4) ◽  
pp. 905-926 ◽  
Author(s):  
Gabriel J Bowen ◽  
Kristine E Nielson ◽  
Timothy I Eglinton
Keyword(s):  
Salt Lake ◽  
Great Salt Lake ◽  
Organic Substrates ◽  
Paleoenvironmental Reconstruction ◽  
Terrestrial Organic Matter ◽  
Proxy Records ◽  
Holocene Sediments ◽  
Radiocarbon Data ◽  
Brine Shrimp Cysts ◽  
Reservoir Age

ABSTRACTThe radiocarbon (14C) content of simultaneously deposited substrates in lacustrine archives may differ due to reservoir and detrital effects, complicating the development of age models and interpretation of proxy records. Multi-substrate 14C studies quantifying these effects remain rare, however, particularly for large, terminal lake systems, which are excellent recorders of regional hydroclimate change. We report 14C ages of carbonates, brine shrimp cysts, algal mat biomass, total organic carbon (TOC), terrestrial macrofossils, and n-alkane biomarkers from Holocene sediments of the Great Salt Lake (GSL), Utah. 14C ages for co-deposited aquatic organic substrates are generally consistent, with small offsets that may reflect variable terrestrial organic matter inputs to the system. Carbonates and long-chain n-alkanes derived from vascular plants, however, are ∼1000–4000 14C years older than other substrates, reflecting deposition of pre-aged detrital materials. All lacustrine substrates are 14C-depleted compared to terrestrial macrofossils, suggesting that the reservoir age of the GSL was > 1200 years throughout most of the Holocene, far greater than the modern reservoir age of the lake (∼300 years). These results suggest good potential for multi-substrate paleoenvironmental reconstruction from Holocene GSL sediments but point to limitations including reservoir-induced uncertainty in 14C chronologies and attenuation and time-shifting of some proxy signals due to detrital effects.

Mixture of parthenogenetic and zygogenetic brine shrimp Artemia (Branchiopoda: Anostraca) in commercial cyst lots from Great Salt Lake, UT, USA

2003 ◽  
Vol 296 (2) ◽  
pp. 243-251 ◽  
Author(s):  
Rafael Campos-Ramos ◽  
Alejandro M Maeda-Martı́nez ◽  
Hortencia Obregón-Barboza ◽  
Gopal Murugan ◽  
Danitzia A Guerrero-Tortolero ◽  
...  
Keyword(s):  
Brine Shrimp ◽  
Salt Lake ◽  
Great Salt Lake

The Brine Shrimp of Great Salt Lake

1937 ◽  
Vol 71 (737) ◽  
pp. 612-616 ◽  
Author(s):  
Gladys M. Relyea
Keyword(s):  
Brine Shrimp ◽  
Salt Lake ◽  
Great Salt Lake

Early Holocene Great Salt Lake, USA

2015 ◽  
Vol 84 (1) ◽  
pp. 57-68 ◽  
Author(s):  
Charles G. Oviatt ◽  
David B. Madsen ◽  
David M. Miller ◽  
Robert S. Thompson ◽  
John P. McGeehin
Keyword(s):  
Great Basin ◽  
Salt Lake ◽  
Great Salt Lake ◽  
Lake Basin ◽  
Basin Floor ◽  
Lake Floor ◽  
Sulfate Salts ◽  
Brine Shrimp Cysts ◽  
Surficial Deposits ◽  
Apparent Conflict

Shorelines and surficial deposits (including buried forest-floor mats and organic-rich wetland sediments) show that Great Salt Lake did not rise higher than modern lake levels during the earliest Holocene (11.5–10.2 cal ka BP; 10–9 14C ka BP). During that period, finely laminated, organic-rich muds (sapropel) containing brine-shrimp cysts and pellets and interbedded sodium-sulfate salts were deposited on the lake floor. Sapropel deposition was probably caused by stratification of the water column — a freshwater cap possibly was formed by groundwater, which had been stored in upland aquifers during the immediately preceding late-Pleistocene deep-lake cycle (Lake Bonneville), and was actively discharging on the basin floor. A climate characterized by low precipitation and runoff, combined with local areas of groundwater discharge in piedmont settings, could explain the apparent conflict between evidence for a shallow lake (a dry climate) and previously published interpretations for a moist climate in the Great Salt Lake basin of the eastern Great Basin.

scholarly journals Potential for Waterborne and Invertebrate Transmission of West Nile Virus in the Great Salt Lake, Utah

2017 ◽  
Vol 83 (14) ◽  
Author(s):  
Melissa Lund ◽  
Valerie Shearn-Bochsler ◽  
Robert J. Dusek ◽  
Jan Shivers ◽  
Erik Hofmeister
Keyword(s):  
West Nile Virus ◽  
Brine Shrimp ◽  
Salt Lake ◽  
Great Salt Lake ◽  
Salt Content ◽  
Haliaeetus Leucocephalus ◽  
West Nile ◽  
Bald Eagles ◽  
Content Type ◽  
Mortality Event

ABSTRACT In November and December of 2013, a large mortality event involving 15,000 to 20,000 eared grebes (Podiceps nigricollis) occurred at the Great Salt Lake (GSL), UT. The onset of the outbreak in grebes was followed by a mortality event in >86 bald eagles (Haliaeetus leucocephalus). During the die-off, West Nile virus (WNV) was detected by reverse transcription-PCR (RT-PCR) or viral culture in the carcasses of grebes and eagles submitted to the National Wildlife Health Center. However, no activity of mosquitoes, the primary vectors of WNV, was detected by the State of Utah's WNV monitoring program. The transmission of WNV has rarely been reported during the winter in North America in the absence of known mosquito activity; however, the size of this die-off, the habitat in which it occurred, and the species involved are unique. We experimentally investigated whether WNV could survive in water with a high salt content, as found at the GSL, and whether brine shrimp, the primary food of migrating eared grebes on the GSL, could have played a role in the transmission of WNV to feeding birds. We found that WNV can survive up to 72 h at 4°C in water containing 30 to 150 ppt NaCl, and brine shrimp incubated with WNV in 30 ppt NaCl may adsorb WNV to their cuticle and, through feeding, infect epithelial cells of their gut. Both mechanisms may have potentiated the WNV die-off in migrating eared grebes on the GSL. IMPORTANCE Following a major West Nile virus die-off of eared grebes and bald eagles at the Great Salt Lake (GSL), UT, in November to December 2013, this study assessed the survival of West Nile virus (WNV) in water as saline as that of the GSL and whether brine shrimp, the major food for migrating grebes, could have played a role as a vector for the virus. While mosquitoes are the major vector of WNV, under certain circumstances, transmission may occur through contaminated water and invertebrates as food.

scholarly journals The Brine Shrimp of the Great Salt Lake

1893 ◽  
Vol 35 (893supp) ◽  
pp. 14274-14275
Author(s):  
J. E. Talmage
Keyword(s):  
Brine Shrimp ◽  
Salt Lake ◽  
Great Salt Lake
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