Matches in SemOpenAlex for { <https://semopenalex.org/work/W2038278154> ?p ?o ?g. }
- W2038278154 abstract "Abstract. Synchronized transitions in the polymorph mineralogy of the major reef-building and sediment-producing calcareous marine organisms and abiotic CaCO3 precipitates (ooids, marine cements) throughout Phanerozoic time is believed to have been caused by tectonically-induced variations in seawater molar Mg/Ca (>2=aragonite seas; <2=calcite seas). Here, I review a series of experiments in which extant calcifying taxa were reared in experimental seawater formulated over the range of mMg/Ca ratios (1.0 to 5.2) that occurred throughout their geologic history. Aragonite-secreting bryopsidalean algae and scleractinian corals and calcite-secreting coccolithophores exhibited higher rates of calcification and growth in the experimental seawaters that favored their skeletal mineral. These results support the assertion that seawater Mg/Ca played an important role in determining which hypercalcifying marine organisms were the major reef-builders and sediment-producers throughout Earth history. The observation that primary production increased along with calcification in mineralogically-favorable seawater is consistent with the hypothesis that calcification promotes photosynthesis within autotrophs through the liberation of CO2. The Mg/Ca ratio of calcite secreted by the coccolithophores, coralline algae and reef-dwelling animals (crustacea, urchins, calcareous tube worms) declined with reductions in seawater Mg/Ca. Calcifying microbial biofilms varied their mineral polymorph with seawater Mg/Ca (mMg/Ca<2=low Mg calc; mMg/Ca>2=arag+high Mg calc), suggesting a nearly abiotic mode of calcification. These results indicate that biomineralogical control can be partially overridden by ambient seawater Mg/Ca and suggests that modern high Mg calcite organisms probably secreted low Mg calcite in calcite seas of the past. Notably, Mg fractionation in autotrophic organisms was more strongly influenced by changes in seawater Mg/Ca, a probable consequence of them inducing a less controlled mode of calcification simply through the removal of CO2 via photosynthesis. This body of work also has implications for thermal-chemical reconstructions of seawater that are based upon skeletal Mg/Ca. And by identifying how marine calcifiers respond to changes in seawater Mg/Ca and absolute Ca2+ concentration, this work should enhance our interpretation of the parallel studies investigating the effects of CO2-induced ocean acidification on marine calcification." @default.
- W2038278154 created "2016-06-24" @default.
- W2038278154 creator A5055894630 @default.
- W2038278154 date "2009-07-23" @default.
- W2038278154 modified "2023-09-24" @default.
- W2038278154 title "Review: the effects of secular variation in seawater Mg/Ca on marine biocalcification" @default.
- W2038278154 cites W1085146136 @default.
- W2038278154 cites W11045460 @default.
- W2038278154 cites W1195057081 @default.
- W2038278154 cites W140492636 @default.
- W2038278154 cites W14173036 @default.
- W2038278154 cites W1485262891 @default.
- W2038278154 cites W1494431475 @default.
- W2038278154 cites W149779869 @default.
- W2038278154 cites W1507304153 @default.
- W2038278154 cites W1510626250 @default.
- W2038278154 cites W1513268864 @default.
- W2038278154 cites W1516607070 @default.
- W2038278154 cites W151873009 @default.
- W2038278154 cites W1525011490 @default.
- W2038278154 cites W1534357174 @default.
- W2038278154 cites W1561053734 @default.
- W2038278154 cites W1577973389 @default.
- W2038278154 cites W1594426298 @default.
- W2038278154 cites W162670588 @default.
- W2038278154 cites W179336772 @default.
- W2038278154 cites W1854780601 @default.
- W2038278154 cites W18744774 @default.
- W2038278154 cites W1964037838 @default.
- W2038278154 cites W1965245650 @default.
- W2038278154 cites W1965475671 @default.
- W2038278154 cites W1965499764 @default.
- W2038278154 cites W1965724422 @default.
- W2038278154 cites W1965889963 @default.
- W2038278154 cites W1965907277 @default.
- W2038278154 cites W1969740829 @default.
- W2038278154 cites W1972070875 @default.
- W2038278154 cites W1972182541 @default.
- W2038278154 cites W1972487992 @default.
- W2038278154 cites W1973082754 @default.
- W2038278154 cites W1973540194 @default.
- W2038278154 cites W1973909156 @default.
- W2038278154 cites W1974648701 @default.
- W2038278154 cites W1974794268 @default.
- W2038278154 cites W1976591828 @default.
- W2038278154 cites W1976877851 @default.
- W2038278154 cites W1977918184 @default.
- W2038278154 cites W1979207920 @default.
- W2038278154 cites W1980645312 @default.
- W2038278154 cites W1980666470 @default.
- W2038278154 cites W1981399480 @default.
- W2038278154 cites W1981401870 @default.
- W2038278154 cites W1981616960 @default.
- W2038278154 cites W1981948997 @default.
- W2038278154 cites W1982053818 @default.
- W2038278154 cites W1982076420 @default.
- W2038278154 cites W1983001789 @default.
- W2038278154 cites W1985468947 @default.
- W2038278154 cites W1985827459 @default.
- W2038278154 cites W1987036576 @default.
- W2038278154 cites W1987710295 @default.
- W2038278154 cites W1989108413 @default.
- W2038278154 cites W1990250430 @default.
- W2038278154 cites W1991055100 @default.
- W2038278154 cites W1991109883 @default.
- W2038278154 cites W1991608704 @default.
- W2038278154 cites W1992129373 @default.
- W2038278154 cites W1992624022 @default.
- W2038278154 cites W1992834931 @default.
- W2038278154 cites W1995007149 @default.
- W2038278154 cites W1995130682 @default.
- W2038278154 cites W1995189845 @default.
- W2038278154 cites W1995383150 @default.
- W2038278154 cites W1995882771 @default.
- W2038278154 cites W1996167059 @default.
- W2038278154 cites W1997304140 @default.
- W2038278154 cites W1999570930 @default.
- W2038278154 cites W1999809323 @default.
- W2038278154 cites W2000644100 @default.
- W2038278154 cites W2004943867 @default.
- W2038278154 cites W2005194733 @default.
- W2038278154 cites W2005683120 @default.
- W2038278154 cites W2006751098 @default.
- W2038278154 cites W2008080886 @default.
- W2038278154 cites W2011556233 @default.
- W2038278154 cites W2016651339 @default.
- W2038278154 cites W2017999347 @default.
- W2038278154 cites W2018324638 @default.
- W2038278154 cites W2022078237 @default.
- W2038278154 cites W2022264799 @default.
- W2038278154 cites W2022633352 @default.
- W2038278154 cites W2023606819 @default.
- W2038278154 cites W2024822135 @default.
- W2038278154 cites W2025558367 @default.
- W2038278154 cites W2026178576 @default.
- W2038278154 cites W2026373114 @default.
- W2038278154 cites W2027292894 @default.
- W2038278154 cites W2027844136 @default.
- W2038278154 cites W2028279895 @default.
- W2038278154 cites W2028782179 @default.