A5068069939- Geology and Paleoclimatology Research
- Paleontology and Stratigraphy of Fossils
- Isotope Analysis in Ecology
- Coral and Marine Ecosystems Studies
- Marine Biology and Ecology Research
- Marine and coastal ecosystems
- Ocean Acidification Effects and Responses
- Calcium Carbonate Crystallization and Inhibition
- Marine Bivalve and Aquaculture Studies
- Methane Hydrates and Related Phenomena
- Marine and fisheries research
- Marine and environmental studies
- Cephalopods and Marine Biology
- Geochemistry and Elemental Analysis
- Marine and coastal plant biology
- Groundwater and Isotope Geochemistry
- earthquake and tectonic studies
- Microbial Community Ecology and Physiology
- Geological and Geochemical Analysis
- Aquatic Ecosystems and Phytoplankton Dynamics
- Hydrocarbon exploration and reservoir analysis
- Radioactive contamination and transfer
- Marine animal studies overview
- Mercury impact and mitigation studies
- Pleistocene-Era Hominins and Archaeology
Hebrew University of Jerusalem
2016-2025
Jerusalem College of Technology
2018-2019
Interuniversity Institute for Marine Sciences in Eilat
1991-2016
Ben-Gurion University of the Negev
2008
Hebrew College
2006
Geological Survey of Israel
2000
Universidad de Zaragoza
1996
Woods Hole Oceanographic Institution
1978-1981
Research Article| January 03, 2003 The Source of Ions for Biomineralization in Foraminifera and Their Implications Paleoceanographic Proxies Jonathan Erez Institute Earth Sciences, Hebrew University Jerusalem, Jerusalem 91904, Israel Search other works by this author on: GSW Google Scholar Author Article Information Publisher: Mineralogical Society America First Online: 03 Mar 2017 © Of Reviews Mineralogy Geochemistry (2003) 54 (1): 115–149. https://doi.org/10.2113/0540115 history Cite View...
Calcification rates in stony corals are expected to decline significantly the near future due ocean acidification. In this study we provide a global estimate of calcification coral reefs as result increase sea surface temperature and partial pressure CO 2 . This estimate, unlike previously reported estimates, is based on an empirical rate law developed from field observations for gross community function aragonite degree saturation (Ω arag ), live cover. were calculated more than 9,000 reef...
The rise in atmospheric CO2 has caused significant decrease sea surface pH and carbonate ion (CO3-2) concentration. This a negative effect on calcification hermatypic corals other calcifying organisms. We report the results of three laboratory experiments designed specifically to separate effects different chemistry parameters (pH, CO3-2, [aq], total alkalinity [AT], inorganic carbon [CT]) calcification, photosynthesis, respiration coral Acropora eurystoma. system was varied change...
Foraminifera are unicellular organisms that inhabit the oceans in various ecosystems. The majority of foraminifera precipitate calcitic shells and among major CaCO 3 producers oceans. They comprise an important component global carbon cycle also provide valuable paleoceanographic information based on relative abundance stable isotopes trace elements (proxies) their shells. Understanding biomineralization processes is for predicting calcification response to ocean acidification reliable...
The Mg/Ca ratio in foraminiferal shells is widely used as a proxy for paleotemperatures. Nevertheless, it seems that the basic Mg content of foraminifera determined by biological factors, can be concluded from large inter species and intrashell variability frequent deviations inorganic behavior. This paper discusses three possible ways which control or modify their shell: (1) involvement organic matrix precipitation process may alter partition coefficient biogenic calcite, (2) controlled...
Seasonal variations in the carbon isotope composition of components pelagic food web Lake Kinneret were recorded and compared with those for bulk plankton from lake early 1970s. Individual planktonic as well isotopically lightest shortly after overturn January heaviest May, peak annual bloom dinoflagellate Peridinium gatunense. The range δ 13 C values observed over an cycle seasonal means varied considerably between taxa. Within primary producers, P. gatunense (range, −23.2 to −17.9‰) was...
In this study we investigated the relations between community calcification of an entire coral reef in northern Red Sea and annual changes temperature, aragonite saturation nutrient loading over a two year period. Summer (April–October) winter (November–March) average rates varied 60 ± 20 30 mmol·m −2 ·d −1 , respectively. general, increased with temperature state water apparent effect nutrients, which is agreement most laboratory studies situ measurements single growth rates. The measured...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 334:93-102 (2007) - doi:10.3354/meps334093 Photoacclimation of Stylophora pistillata light extremes: metabolism and calcification Tali Mass1,2,*, Shai Einbinder1,3,4, Eran Brokovich1,3, Nadav Shashar1,5, Razi Vago6, Jonathan Erez7, Zvy Dubinsky2 1The Interuniversity Institute for Sciences at Eilat, PO Box...
Other| April 01, 1990 Lunar and semi-lunar reproductive cycles in some spinose planktonic foraminifers Jelle Bijma; Bijma Universitaet Tuebingen, Institut und Museum fuer Geologie Palaeontologie, Tubingen, Federal Republic of Germany Search for other works by this author on: GSW Google Scholar Jonathan Erez; Erez Christoph Hemleben Author Article Information Publisher: Cushman Foundation Foraminiferal Research First Online: 03 Mar 2017 Online ISSN: 1943-264X Print 0096-1191 GeoRef, Copyright...
The chemical environment and the symbiotic photosynthesis of spinose foraminiferan, Globigerinoides sacculifer, from Gulf Aqaba, northern Red Sea, were studied with O 2 pH microelectrodes at a resolution 50–100 µ m. In dark, foraminiferan respiration lowered concentration shell surface to 50% air saturation, while was ambient value 8.23 8.15. light, increased 2.5 times saturation reached 8.62. These steep gradients established over diffusive boundary layer between spines, which partly...
The mechanisms behind the transfer of molecules from surrounding sea water to site coral calcification are not well understood, but critical for understanding how reefs formed. We conducted experiments with fluorescent dye calcein, which binds calcium and is incorporated into growing carbonate crystals, determine permeability properties cells tissues this molecule, it skeleton. also compared rates calcein incorporation measured by alkalinity anomaly technique. Finally, an...
Worldwide, coral reef ecosystems are experiencing increasing pressure from a variety of anthropogenic perturbations including ocean warming and acidification, increased sedimentation, eutrophication, overfishing, which could shift reefs to condition net calcium carbonate (CaCO3) dissolution erosion. Herein, we determine the calcification potential relative balance organic carbon metabolism (net community production; NCP) inorganic calcification; NCC) within 23 locations across globe. In...