Investigating the influence of temperature and seawater δ18O on Donax obesulus (Reeve, 1854) shell δ18O

Warner, Jacob Pate; DeLong, Kristine L.; Chicoine, David; Thirumalai, Kaustubh; Andrus, C. Fred T.

doi:10.1016/j.chemgeo.2021.120638

Cited by 3 publications

(4 citation statements)

References 78 publications

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“…Zonal and meridional advection play an important role in generating seawater δ 18 O anomalies during both El Niño events, and subsurface (vertical) advection/diffusion is also critical. This is consistent with work in the eastern Pacific suggesting the importance of advective transport for seawater δ 18 O (Warner et al., 2022); the role of advection is likely significant in many areas across the basin.…”

Section: Discussionsupporting

confidence: 91%

Contrasting Central Equatorial Pacific Oxygen Isotopic Signatures of the 2014/2015 and 2015/2016 El Niño Events

Stevenson,

Cobb,

Merrifield

et al. 2023

Geophysical Research Letters

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Paleoclimate reconstructions of El Niño/Southern Oscillation (ENSO) behavior often rely on oxygen isotopic records from tropical corals (δ18O). However, few reef‐based observations of physical conditions during El Niño events exist, limiting our ability to interpret coral δ18O. Here we present physical and geochemical measurements from Palmyra Atoll (5.9°N, 162.1°W) from 2014–2017, along with a data assimilation product using the isotope‐enabled Regional Ocean Modeling System (isoROMS). Coral δ18O signals are comparably strong in 2014–2015 and 2015–2016; notably, over 50% of the signal is driven by seawater δ18O, not temperature. If a constant seawater δ18O:salinity relationship were present, this would imply a comparable salinity anomaly during both events. However, salinity changes are much larger during 2014–2015, indicating a highly nonstationary relationship. isoROMS then shows that advection strongly influences δ18O during both the 2014–2015 and 2015–2016 El Niño, driving differences in the salinity/seawater δ18O relationship. This demonstrates the need for considering ocean dynamics when interpreting coral δ18O.

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Section: Discussionsupporting

confidence: 91%

Contrasting Central Equatorial Pacific Oxygen Isotopic Signatures of the 2014/2015 and 2015/2016 El Niño Events

Stevenson,

Cobb,

Merrifield

et al. 2023

Geophysical Research Letters

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“…Potential target intervals include the Eocene-Oligocene transition, the Oligocene-Miocene transition, the Middle Miocene Climatic Optimum, and the mid-Piacenzian Warm Period (Westerhold et al, 2020). This first palaeoclimatological study on Angulus highlights the opportunities for using this genus as a climate archive and confirms earlier findings that tellinid bivalves are good subjects for palaeoclimatic research (Jones et al, 2005;Warner et al, 2022). Avenues of research are not limited to stable isotope analysis but may extend to minor and trace elemental analyses by, for example, extended µXRF analyses and laser-ablation ICP-MS profiles (de Winter et al, 2017b(de Winter et al, , 2020.…”

Section: Angulus Benedeni Benedeni As a Climate Archivesupporting

confidence: 76%

“…The tellinid bivalve genus Angulus has not previously been studied for the purpose of climate reconstruction, but it holds the potential to be a valuable climate archive. Seasonality studies have previously been carried out successfully on other tellinids, such as Donax variabilis (Jones et al, 2005) and Donax obesulus (Warner et al, 2022). Here, we study a representative subspecies of this genus, Angulus benedeni benedeni (Nyst and Westendorp, 1839), in order to assess its suitability as a climate archive.…”

Section: Introductionmentioning

confidence: 99%

The fossil bivalveAngulus benedeni benedeni: a potential seasonally resolved stable-isotope-based climate archive to investigate Pliocene temperatures in the southern North Sea basin

Wichern¹,

Winter²,

Johnson³

et al. 2023

Biogeosciences

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Abstract. Bivalves record seasonal environmental changes in their shells, making them excellent climate archives. However, not every bivalve can be used for this end. The shells have to grow fast enough so that micrometre- to millimetre-sampling can resolve sub-annual changes. Here, we investigate whether the bivalve Angulus benedeni benedeni is suitable as a climate archive. For this, we use ca. 3-million-year-old specimens from the Piacenzian collected from a temporary outcrop in the Port of Antwerp area (Belgium). The subspecies is common in Pliocene North Sea basin deposits, but its lineage dates back to the late Oligocene and has therefore great potential as a high-resolution archive. A detailed assessment of the preservation of the shell material by micro-X-ray fluorescence, X-ray diffraction, and electron backscatter diffraction reveals that it is pristine and not affected by diagenetic processes. Oxygen isotope analysis and microscopy indicate that the species had a longevity of up to a decade or more and, importantly, that it grew fast and large enough so that seasonally resolved records across multiple years were obtainable from it. Clumped isotope analysis revealed a mean annual temperature of 13.5 ± 3.8 ∘C. The subspecies likely experienced slower growth during winter and thus may not have recorded temperatures year-round. This reconstructed mean annual temperature is 3.5 ∘C warmer than the pre-industrial North Sea and in line with proxy and modelling data for this stratigraphic interval, further solidifying A. benedeni benedeni's use as a climate recorder. Our exploratory study thus reveals that Angulus benedeni benedeni fossils are indeed excellent climate archives, holding the potential to provide insight into the seasonality of several major climate events of the past ∼ 25 million years in northwestern Europe.

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“…Notably, D. obesulus has demonstrated resiliency to ocean temperature increases and salinity reductions associated with strong El Niño events that can decimate other shellfish taxa for months or even years (Arntz et al, 1987; Berrú Paz and Alzamora, 2014; Carstensen et al, 2010). D. obesulus also tolerates latitudinally-dependent ranges in SST during La Niña (Warner et al, 2022).…”

Section: Results: Marine Mollusks Consumed In the Chincha Pisco And T...mentioning

confidence: 99%

Marine shellfish exploitation as a means of reducing vulnerability to resource uncertainty in southern coastal Peru (200 BCE–150 CE)

2022

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The effects of El Niño Southern Oscillation (ENSO) are notoriously hazardous for human populations of the hyperarid Peruvian coast. Yet, ENSO climate fluctuations are fundamental to the ecology of desert plant and animal resources that have been incorporated into human subsistence economies for millennia. We examine marine shellfish exploitation among early complex societies in southern coastal Peru at the end of the first millenium BCE to better understand the subsistence vulnerability of communities in arid environments with variable resource availability and productivity. We analyze new shellfish data from Jahuay, a shoreline fishing settlement in the Topará Quebrada occupied amidst new regional social hierarchies and intensifying inner-valley agriculture. We compare mollusk taxonomic diversity and taxa rank order with published assemblages from four near-contemporaneous sites to assess local and regional trends in resource exploitation. At Jahuay, a unique focus on foraging plentiful Donax obesulus clams resistant to ENSO effects may reflect a local buffering strategy to ensure a resource supply through interannual and decadal climate oscillations. Our comparative results suggest regional reliance on intertidal resource patches, especially rocky habitats, for consumable shellfish. The relative convenience of gathering sessile intertidal taxa that form dense settlements may partly explain their regional popularity. The potential to dry and exchange mollusk meat as a protein source likely enhanced diet diversification while supporting economic and social relationships between communities. Overall, our findings imply that mollusks and intertidal foraging landscapes were important within a broad-spectrum subsistence strategy suited to maintaining and coordinating food availability in a dynamic environment.

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Investigating the influence of temperature and seawater δ18O on Donax obesulus (Reeve, 1854) shell δ18O

Cited by 3 publications

References 78 publications

Contrasting Central Equatorial Pacific Oxygen Isotopic Signatures of the 2014/2015 and 2015/2016 El Niño Events

Contrasting Central Equatorial Pacific Oxygen Isotopic Signatures of the 2014/2015 and 2015/2016 El Niño Events

The fossil bivalveAngulus benedeni benedeni: a potential seasonally resolved stable-isotope-based climate archive to investigate Pliocene temperatures in the southern North Sea basin

Marine shellfish exploitation as a means of reducing vulnerability to resource uncertainty in southern coastal Peru (200 BCE–150 CE)

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