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Oxygen isotope fractionation and algal symbiosis in benthic foraminifera from the Gulf of Elat, Israel

Journal Article:

Abstract

In order to investigate possible isotopic fractionations due to algal symbiosis the oxygen and carbon isotope compositions of shell carbonate from symbiont-free and symbiont-bearing benthic foraminifera have been compared to that of molluscs living at the same locality. The material was collected over a depth profile in the Gulf of Elat (Aqaba), Israel, covering the interval from 4 to 125 metres. After correcting for variations of temperature with depth, characteristic /sup 18/O-depletions were observed in the foraminiferal shell carbonate when compared to the molluscs. These depletions are interpreted as 1) a constant vital effect seen in all the foraminifera studied and 2) an additional, light-dependent vital effect observed in the symbiont-bearing forms only, caused by incorporation of photosynthetic oxygen formed by the symbiotic algae. This additional vital effect emphasizes the difficulties in applying foraminifera to oxygen isotope palaeotemperature analyses. No well-defined differences in carbon isotope compositions are observed between symbiont-bearing and symbiont-free foraminifera.
Authors:
Buchardt, B; Hansen, H J [1] 
  1. Copenhagen Univ. (Denmark)
Publication Date:
Jan 01, 1977
Product Type:
Journal Article
Reference Number:
AIX-10-440959; EDB-79-096690
Resource Relation:
Journal Name: Bull. Geol. Soc. Den.; (Denmark); Journal Volume: 26
Subject:
58 GEOSCIENCES; 54 ENVIRONMENTAL SCIENCES; CALCIUM CARBONATES; CARBON 13; OXYGEN 18; ISOTOPE RATIO; FORAMINIFERA; MOLLUSCS; RED SEA; ALGAE; BENTHOS; EXPERIMENTAL DATA; PALEONTOLOGY; SEAWATER; SHELLS; SYMBIOSIS; TABLES; TEMPERATURE MEASUREMENT; ALKALINE EARTH METAL COMPOUNDS; ANIMALS; AQUATIC ORGANISMS; CALCIUM COMPOUNDS; CARBON COMPOUNDS; CARBON ISOTOPES; CARBONATES; DATA; DATA FORMS; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; HYDROGEN COMPOUNDS; INFORMATION; INVERTEBRATES; ISOTOPES; LIGHT NUCLEI; MICROORGANISMS; NUCLEI; NUMERICAL DATA; OXYGEN COMPOUNDS; OXYGEN ISOTOPES; PLANTS; PROTOZOA; SEAS; STABLE ISOTOPES; SURFACE WATERS; WATER; 580400* - Geochemistry- (-1989); 520100 - Environment, Aquatic- Basic Studies- (-1989)
OSTI ID:
6218141
Country of Origin:
Denmark
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: MDGFA
Submitting Site:
INIS
Size:
Pages: 185-194
Announcement Date:

Journal Article:

Citation Formats

Buchardt, B, and Hansen, H J. Oxygen isotope fractionation and algal symbiosis in benthic foraminifera from the Gulf of Elat, Israel. Denmark: N. p., 1977. Web.
Buchardt, B, & Hansen, H J. Oxygen isotope fractionation and algal symbiosis in benthic foraminifera from the Gulf of Elat, Israel. Denmark.
Buchardt, B, and Hansen, H J. 1977. "Oxygen isotope fractionation and algal symbiosis in benthic foraminifera from the Gulf of Elat, Israel." Denmark.
@misc{etde_6218141,
title = {Oxygen isotope fractionation and algal symbiosis in benthic foraminifera from the Gulf of Elat, Israel}
author = {Buchardt, B, and Hansen, H J}
abstractNote = {In order to investigate possible isotopic fractionations due to algal symbiosis the oxygen and carbon isotope compositions of shell carbonate from symbiont-free and symbiont-bearing benthic foraminifera have been compared to that of molluscs living at the same locality. The material was collected over a depth profile in the Gulf of Elat (Aqaba), Israel, covering the interval from 4 to 125 metres. After correcting for variations of temperature with depth, characteristic /sup 18/O-depletions were observed in the foraminiferal shell carbonate when compared to the molluscs. These depletions are interpreted as 1) a constant vital effect seen in all the foraminifera studied and 2) an additional, light-dependent vital effect observed in the symbiont-bearing forms only, caused by incorporation of photosynthetic oxygen formed by the symbiotic algae. This additional vital effect emphasizes the difficulties in applying foraminifera to oxygen isotope palaeotemperature analyses. No well-defined differences in carbon isotope compositions are observed between symbiont-bearing and symbiont-free foraminifera.}
journal = {Bull. Geol. Soc. Den.; (Denmark)}
volume = {26}
journal type = {AC}
place = {Denmark}
year = {1977}
month = {Jan}
}