Formation of Zn- and Fe-sulfides near hydrothermal vents at the Eastern Lau Spreading Center: implications for sulfide bioavailability to chemoautotrophs

Download
2008-05-19
Hsu-Kim, Heileen
Mullaugh, Katherine M.
Tsang, Jeffrey J.
Yücel, Mustafa
Luther, George W.
Background: The speciation of dissolved sulfide in the water immediately surrounding deep-ocean hydrothermal vents is critical to chemoautotrophic organisms that are the primary producers of these ecosystems. The objective of this research was to identify the role of Zn and Fe for controlling the speciation of sulfide in the hydrothermal vent fields at the Eastern Lau Spreading Center (ELSC) in the southern Pacific Ocean. Compared to other well-studied hydrothermal systems in the Pacific, the ELSC is notable for unique ridge characteristics and gradients over short distances along the north-south ridge axis.
GEOCHEMICAL TRANSACTIONS

Suggestions

Changes of Eutrofication Indicator Parameters (TP, DIN, Chl-a and TRIX) in the Cilician Basin (Northeast Mediterranean)
TUĞRUL, SÜLEYMAN; Uysal, Zahit; Erdogan, Emine; Yucel, Nebil (2011-01-01)
Eutrophication processes and changes in coastal ecosystem are determined by the coastal/open sea interactions and rates of nutrient pollution. The Cilician Basin shelf waters are affected not only by intense industrial activities and increased population, but also by complex atmosphere-sea-land interactions. There is a recognizable difference between water qualities of Mersin bay coastal and the Cilician open waters depleted in nutrients. Eutrophic conditions have developed in the eastern bay shallow waters...
Ecosystem and primary production interactions in three contrasting sites in thenorthern levantine basın
Yılmaz, Elif; Salihoğlu, Barış; Uysal, Zahit; Yumruktepe, Veli; Tezcan, Devrim; Örek, Hasan; Tuğrul, Süleyman (null; 2016-09-16)
To determine the effects of different nutrient dynamics in the Levatine Basin a 1-D multi component lower trophic ecosystem model is used and the carrying capacity and regulatory mechanisms of the nutrients on upper trophic levels at three contrasting marine sites in the Northeastern Mediterranean is assessed. Offshore waters of Mersin Bay, coastal sites of Erdemli and Rhodes Gyre is chosen as they represent distinctive characteristics in terms of nutrients dynamics. Model results suggest distinct mechanism...
Effects of water temperature on summer periphyton biomass in shallow lakes: a pan-European mesocosm experiment
Mahdy, Aldoushy; Hilt, Sabine; Filiz, Nur; Beklioğlu, Meryem; Hejzlar, Josef; Ozkundakci, Deniz; Papastergiadou, Eva; Scharfenberger, Ulrike; Sorf, Michal; Stefanidis, Kostas; Tuvikene, Lea; Zingel, Priit; Sondergaard, Martin; Jeppesen, Erik; Adrian, Rita (2015-07-01)
Periphyton communities play an important role in shallow lakes and are controlled by direct forces such as temperature, light, nutrients, and invertebrate grazing, but also indirectly by planktivorous fish predation. We performed a pan-European lake mesocosm experiment on periphyton colonization covering five countries along a north/south geographical/temperature gradient (Estonia, Germany, Czech Republic, Turkey, and Greece). Periphyton biomass on artificial polypropylene strips exposed at 50 cm water dept...
VARIABILITY IN PHYTOPLANKTON PIGMENT COMPOSITION IN MERSIN BAY
YÜCEL, NEBİL; Uysal, Zahit; TUĞRUL, SÜLEYMAN (2017-01-01)
Phytoplankton pigment composition and associated biochemical (chlorophyll a, nitrate+nitrite, ammonia, phosphate, silicate) and physical (temperature, salinity) parameters were studied seasonally in the river-fed eutrophic coastal and oligotrophic offshore waters of the Mersin Bay located on NE Mediterranean. Total chlorophyll a concentrations varied seasonally between 0.023-7.73 µg/L in the river fed coastal zone (salinity: 36.54-39.68), exhibiting less seasonality in the offshore station (0.01-0.91 µg/L)....
Ionic composition of rainwater on the Black Sea Coast of Turkey
Tuncer, Pınar; Tuncel, Süleyman Gürdal; Department of Environmental Engineering (2019)
Composition of rainwater is a measure of pollutant deposition to marine and terrestrial ecosystem. Soluble fraction of wet deposited pollutants are even more important because they are bioavailable to fish in the sea and plants on the land. In addition to their harmful effects on plant and animal life, inorganic ions, trace elements and organic compounds in rainwater can also be used as tracers of long-range transport to receptor. In this study, chemical composition of rainwater samples collected at Amasra ...
Citation Formats
H. Hsu-Kim, K. M. Mullaugh, J. J. Tsang, M. Yücel, and G. W. Luther, “Formation of Zn- and Fe-sulfides near hydrothermal vents at the Eastern Lau Spreading Center: implications for sulfide bioavailability to chemoautotrophs,” GEOCHEMICAL TRANSACTIONS, pp. 0–0, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30957.