The use of oxygen isotope variation in shells of estuarine mollusks as a quantitative record of seasonal and annual Colorado river discharge 1 1Associate editor: K. K. Falkner

Dettman, David L.; Flessa, Karl W.; Roopnarine, Peter D.; Schöne, Bernd R.; Goodwin, David H.

doi:10.1016/j.gca.2003.09.008

Cited by 116 publications

(62 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…18 O ar values can be used as a proxy for past water compositions during summer by showing that aragonite in modern shells is precipitated in isotopic equilibrium with the ambient water (Dettman et al 1999;Dettman et al 2004;Goewert et al 2007 Materials and methods…”

Section: Introductionmentioning

confidence: 99%

Can shells of freshwater mussels (Unionidae) be used to estimate low summer discharge of rivers and associated droughts?

Versteegh

Vonhof²,

Troelstra³

et al. 2010

Int J Earth Sci (Geol Rundsch)

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Can shells of freshwater mussels (Unionidae) be used to estimate low summer discharge of rivers and associated droughts?

Versteegh

Vonhof²,

Troelstra³

et al. 2010

Int J Earth Sci (Geol Rundsch)

View full text Add to dashboard Cite

show abstract

“…These limitations are overcome, however, by obtaining sub-annual paleoclimate records from bivalve mollusks (e.g., Jones and Allmon 1995;Khim et al 2003;Dettman et al 2004;Ivany et al 2004;Carré et al 2005;Thébault et al 2007). Bivalve mollusk shells grow by incremental accretion of CaCO 3 along the ventral margin, which produces annual growth patterns, including distinct daily growth patterns in the youngest shell portion (e.g., Pannella and MacClintock 1968;Jones 1981Jones , 1983.…”

Section: Introductionmentioning

confidence: 99%

Seasonality in the North Sea during the Allerød and Late Medieval Climate Optimum using bivalve sclerochronology

Schöne

Fiebig

2008

Int J Earth Sci (Geol Rundsch)

Self Cite

View full text Add to dashboard Cite

Seasonal temperature patterns may have changed through time in response to current global warming. However, the temporal resolution of available proxy records is not sufficient to quantify paleotemperature seasonality prior to anthropogenic forcing of the climate. In the present study, we reconstructed seasonal and inter-annual temperature patterns of the North Sea during the last 140 years, the Allerød Interglacial and the Late Medieval Climate Optimum using sclerochronological and d 18 O aragonite data from bivalve shells, Arctica islandica. On average, the climate during 1278-1353 AD was ca. 1.1°C colder and seasonality was ca. 60% less than today. During the Allerød, long-term temperatures remained about 3.2°C below present values, and absolute summer and winter anomalies were ca. -4 and -2.7°C, respectively. However, seasonality was statistically indistinguishable from today. Long-term average temperatures compare well with existing data for the Late Medieval and Allerød, but detailed information on seasonality during the studied time intervals has never been presented before. Our data also demonstrated that annual instrumental and d 18 O aragonite -derived temperatures did not always match. This difference is explained by (1) NAOdriven salinity changes, which influence the temperature estimation from d 18 O aragonite and (2) food-driven changes in growth rates; portions of the shell that formed more rapidly are overrepresented in carbonate samples. Our study indicated that individual bivalve shells can open discrete, nearcentury long, ultra-high-resolution windows into the climate past. Such information can be vital for testing and verifying numerical climate models.

show abstract

“…The use of isotopic data from their shells is gaining significant attention as a valuable tool to generate a much-needed retrospective time series of hydrographic data (Khim et al, 2001(Khim et al, , 2003Müller-Lupp et al, 2003Dettman et al, 2004;Simstich et al, 2005). These organisms accrete calcium carbonate at the ventral margin of their shells throughout the growing period, and this accretion is accentuated in the spring and summer.…”

mentioning

confidence: 99%

Hydrographic Changes in Nares Strait (Canadian Arctic Archipelago) in Recent Decades Based on δ18O Profiles of Bivalve Shells

Torres¹,

Zima²,

Falkner³

et al. 2011

ARCTIC

Self Cite

View full text Add to dashboard Cite

ABSTRACT. Nares Strait is one of three main passages of the Canadian Archipelago that channel relatively fresh seawater from the Arctic Ocean through Baffin Bay to the Labrador Sea. Oxygen isotopic profiles along the growth axis of bivalve shells, collected live over the 5 -30 m depth range from the Greenland and Ellesmere Island sides of the strait, were used to reconstruct changes in the hydrography of the region over the past century. The variability in oxygen isotope ratios is mainly attributed to variations in salinity and suggests that the northern end of Nares Strait has been experiencing an increase in freshwater runoff since the mid 1980s. The recent changes are most pronounced at the northern end of the strait and diminish toward the south, a pattern consistent with proximity to the apparently freshening Arctic Ocean source in the north and mixing with Baffin Bay waters as the water progresses southward. This increasing freshwater signal may reflect changes in circulation and ice formation that favor an increased flow of relatively fresh waters from the Arctic Ocean into Nares Strait.

show abstract

The use of oxygen isotope variation in shells of estuarine mollusks as a quantitative record of seasonal and annual Colorado river discharge 1 1Associate editor: K. K. Falkner

Cited by 116 publications

References 29 publications

Can shells of freshwater mussels (Unionidae) be used to estimate low summer discharge of rivers and associated droughts?

Can shells of freshwater mussels (Unionidae) be used to estimate low summer discharge of rivers and associated droughts?

Seasonality in the North Sea during the Allerød and Late Medieval Climate Optimum using bivalve sclerochronology

Hydrographic Changes in Nares Strait (Canadian Arctic Archipelago) in Recent Decades Based on δ18O Profiles of Bivalve Shells

Contact Info

Product

Resources

About