An expanded ostracod-based conductivity transfer function for climate reconstruction in the Levant

Mischke, Steffen; Almogi‐Labin, Ahuva; Al-Saqarat, Bety S.; Rosenfeld, Arik; Elyashiv, Hadar; Boomer, Ian; Stein, Mordechai; Lev, Lilach; Ito, Emi

doi:10.1016/j.quascirev.2014.04.004

Cited by 34 publications

(20 citation statements)

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“…Sedimentary archives from coastal lakes have produced important records of environmental change including: how global cycles affect regional climate patters (Donnelly and Woodruff, 2007;Mann et al, 2009), how sea-level affects local environments (Teeter 1995;Peros et al 2007;Gabriel et al, 2009;Kovacs et al, 2013), and how climates have varied through time (Mischke et al, 2014). Limnological conditions are determined by the complex interplay between temperature, precipitation, evaporation, and paleohydrologic conditions, so an understanding of environmental changes and their causes requires a multiproxy approach in a historical context (Peros et al, 2007;Saros, 2009;Sayer et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…Their low-Mg calcite shells can be preserved as fossils and commonly range in size from 0.5-2 mm and long have been used as biological proxies of anthropogenic change and past environmental conditions (Frenzel and Boomer 2005;Padmanabha and Belagali, 2008;Michelson and Park, 2013). These organisms have already been used in transfer functions (see Viehberg and Mesquita-Joanes, 2012 for a review) in lake sediments to reconstruct conductivity (Mezquita et al, 2005;Mischke et al, 2007;Mischke et al, 2010a;Mischke et al, 2014;Mercau and Laprida, 2016), water depth (Mourguiart and Carbonel, 1994;Mourguiart et al, 1998;Alin and Cohen, 2003;Mischke et al, 2010b;Peng et al, 2013;Guo et al, 2016), and temperature (Mezquita et al, 2005;Viehberg, 2006).…”

Section: Introductionmentioning

confidence: 99%

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A quantitative inference model for conductivity using non-marine ostracode assemblages on San Salvador Island, Bahamas: Paleosalinity records from two lakes

Michelson

Boush

2017

Palaeogeography, Palaeoclimatology, Palaeoecology

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Quantitative records of past environments are needed to understand natural variability in ecosystems and their responses to climate change. Changes in ostracode assemblages through time can provide such records as ostracode species are sensitive to changes in their local environments. Before they can be used to indicate past environments, however, is it necessary to understand how distributions of assemblages change across environmental gradients. To that end, thirty-two lakes on San Salvador Island, Bahamas were sampled for both ostracodes and nineteen limnological variables. Multivariate fuzzy set ordination indicates that change in ostracode assemblages is significantly and independently correlated with three environmental variables: electrical conductivity (salinity), dissolved oxygen and alkalinity. A transfer function was created to reconstruct past conductivity since changing conductivity of lakes on San Salvador is influenced by changes in climate and sea-level. A 2-component weighted-averaging partial least squares model performed best as a transfer function for conductivity with an apparent r 2 of 0.76 and an r 2 of 0.69 between observed and predicted conductivity, as assessed by leave-one-out cross validation. The resulting transfer function was then applied to two mid-to late-Holocene sediment cores from which ostracode assemblages were sampled. The late Holocene conductivity records show that changes in conductivity of lakes on San Salvador are broadly synchronous with times of enhanced ENSO activity corresponding to elevated conductivity in response to lower Atlantic hurricane occurrence. These results demonstrate that changing ostracode assemblages through time provide a reliable means to reconstruct past salinity and demonstrates the strong effect of ENSO on Bahamian aridity. This study 92

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A quantitative inference model for conductivity using non-marine ostracode assemblages on San Salvador Island, Bahamas: Paleosalinity records from two lakes

Michelson

Boush

2017

Palaeogeography, Palaeoclimatology, Palaeoecology

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“…On the other hand, Martens (1990) noted the presence of species in the East African Lake Shala with 16-21 g/L salinity. Recently, Mischke et al (2014) indicated the overcoming of species to large specific conductivity fluctuation but suggesting low optimum and tolerance of the species in 3.164 µS/cm and 0.916 µS/cm of EC values. The minimum and maximum value of electrical conductivity 21-9600 (after 15 days 100 % mortality observe) μS/cm (the current study; Gandolfi et al 2001a) and salinity range 0-15 ‰ (the current study; Meisch 2000) for the species in literature strengthen the tolerating ability of species to salinity and EC fluctuations.…”

Section: Discussionmentioning

confidence: 99%

Fossil and Recent Distribution and Ecology of Ancient Asexual Ostracod Darwinula stevensoni (Ostracoda, Crustacea) in Turkey

Yavuzatmaca¹,

Külköylüoğlu²

2019

Journal of Limnology and Freshwater Fisheries Research

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In order to determine distribution, habitat and ecological preferences of Darwinula stevensoni, data gathered from 102 samples collected in Turkey between 2000 and 2017 was evaluated. A total of 1786 individuals of D. stevensoni were reported from eight different aquatic habitats in 14 provinces in six of seven geographical regions of Turkey. Although there are plenty of samples from Central Anatolia Region, recent form of the species was not encountered. Unlike recent, fossil forms of species were encountered in all geographic regions except Southeastern Anatolia. The oldest fossil record in Turkey was reported from the Miocene period (ca 23 mya). Species occurred in all climatic seasons in Turkey. D. stevensoni showed high optimum and tolerance levels to different ecological variables. Results showed a positive and negative significant correlations of the species with pH (P<0.05) and elevation (P<0.01), respectively. It seems that the ecological preferences of the species are much wider than previously known. Our results suggest that if D. stevensoni is used to estimate past and present environmental conditions, attention and care should be paid on its ecology and distribution.

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“…Total and relative benthic foraminiferal abundances were determined, and species diversity was expressed as raw diversity (species richness). The identification of ostracod taxa is based mainly on Athersuch et al (1989), Maddocks et al (2004) and Mischke et al (2014). The preservation state of foraminifera and ostracods was evaluated based on several criteria (e.g., breakage, reworking, population structure, sorting, articulation of ostracods shells) indicating taphonomic processes within the depositional environment (e.g., Frenzel and Boomer, 2005).…”

Section: Methodsmentioning

confidence: 99%

Eastern Mediterranean sea levels through the last interglacial from a coastal-marine sequence in northern Israel

Sivan

Sisma-Ventura

Greenbaum

et al. 2016

Quaternary Science Reviews

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An expanded ostracod-based conductivity transfer function for climate reconstruction in the Levant

Cited by 34 publications

References 38 publications

A quantitative inference model for conductivity using non-marine ostracode assemblages on San Salvador Island, Bahamas: Paleosalinity records from two lakes

A quantitative inference model for conductivity using non-marine ostracode assemblages on San Salvador Island, Bahamas: Paleosalinity records from two lakes

Fossil and Recent Distribution and Ecology of Ancient Asexual Ostracod Darwinula stevensoni (Ostracoda, Crustacea) in Turkey

Eastern Mediterranean sea levels through the last interglacial from a coastal-marine sequence in northern Israel

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