Ostracods from water bodies in hyperarid Israel and Jordan as habitat and water chemistry indicators

Mischke, Steffen; Ginat, Hanan; Al-Saqarat, Bety S.; Almogi‐Labin, Ahuva

doi:10.1016/j.ecolind.2011.07.017

Cited by 36 publications

(25 citation statements)

References 32 publications

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“…Since then many authors have analyzed the marginal ripplets on the inner lamella of the left valve but not always they seem to resemble the pattern illustrated by Janz (1994) (Anadón et al, 2012;Mischke and Zhang, 2010) or they respect it partially, giving rise to several subtypes within the same population (Mischke et al, 2014). In studies on the quaternary lacustrine and fluvio-lacustrine deposits, the marginal ripplets and the surface ornamentation have sometimes been successfully used to distinguish between different Ilyocypris species (Wrozyna et al, 2009;Lord et al, 2011;Mischke and Zhang, 2010;Mischke et al, 2012Mischke et al, , 2014. In some cases, however, the simultaneous use of the two diagnostic criteria led to controversial species attribution and eventually to a supra-specific identification (Gliozzi and Mazzini, 1998;Anadón et al, 2012;Van der Meeren et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

TheIlyocyprispuzzle: A multidisciplinary approach to the study of phenotypic variability

Mazzini

Gliozzi

Rossetti

et al. 2014

Internat. Rev. Hydrobiol.

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Ilyocypris Brady and Norman () is a widespread freshwater ostracod genus including about 30 living and 190 fossil species. The specific identification of the living Ilyocypris relies mainly on the appendages. An identification exclusively based on valves is rather complicated because of a high intraspecific variability of their characters in several species. This study aims to test the taxonomic significance of the valves characters through the examination of specimens unambiguously identified on the basis of their soft part morphology, in order to provide useful taxonomic criteria for the identification of Ilyocypris shells in fossil assemblages. Sixty‐five ilyocypridid specimens collected in mainland Italy and surrounding islands were analyzed. The patterns of valve surface ornamentation and of marginal ripplets were examined by electron microscopy. Moreover, the geometric morphometric analysis of the valve outlines was performed. Sixty‐two specimens could be easily accommodated in eight Ilyocypris species (I. bradyi, I. decipiens, I. getica, I. gibba, I. hartmanni, I. inermis, I. monstrifica, and I. salebrosa) according to the morphology of their appendages. Three additional specimens, with soft parts typical of Ilyocypris but clearly distinct valve morphology, were left in open nomenclature. Our results show that the outline analysis is often a valid tool to discriminate between different species. Conversely, valve ornamentation displays different degrees of intraspecific variability in some Ilyocypris species. The marginal ripplets are constant within each species population, but they do not always mirror the patterns reported by other authors; therefore, we do not consider them as reliable diagnostic character for specific determination. This study confirms that the identification of Ilyocypris species requires accurate description of appendages as well as external and internal carapace characteristics, and stresses the advantage of a combined neontological and paleontological investigation in solving taxonomic problems related to non‐marine ostracods.

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Section: Introductionmentioning

confidence: 99%

TheIlyocyprispuzzle: A multidisciplinary approach to the study of phenotypic variability

Mazzini

Gliozzi

Rossetti

et al. 2014

Internat. Rev. Hydrobiol.

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“…Sample P7/8.6 was very rich in ostracod valves, so only 412 valves were picked. Ostracods were identified mainly with reference to Fuhrmann (2013), Janz et al, 2001;Karanovic (2012), Meisch (2000), and publications of Mischke et al (2010Mischke et al ( , 2012, using a scanning electron microscope (SEM) Zeiss Supra 40 VP at the Freie Universität Berlin and a low power binocular microscope. Ostracods of the genus Ilyocypris were determined at the species level regarding the criteria mentioned by Mazzini et al (2014) with particular attention on the marginal ripples of the postero-ventral margin of the left valves, according to Janz (1994) and Mazzini et al (2014).…”

Section: Methodsmentioning

confidence: 99%

The spring of Nadaouiyeh Aïn Askar — Paleoecology of a Paleolithic oasis in arid central Syria

Kalbe

Jagher

Pümpin

2016

Palaeogeography, Palaeoclimatology, Palaeoecology

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“…Geographical distribution: Holarctic with introductions into the Southern Hemisphere (Meisch, 2000); Anthropocene sediments from Sudan (Schöning, 1996); Holocene from Jordan (Mischke et al, 2012) and Israel (Flako-Zaritsky et al, 2011;Mischke et al, 2014). 2012 Sarscypridopsis aculeata (Costa); Karanovic: 422, fig.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

“…Pachur and Hoelzmann, 1991;de Menocal et al, 2000;Mischke, 2001;Fleitmann and Matter, 2009;Broxton et al, 2011;Mischke et al, 2012). Some of these studies reported the distribution and development of Holocene palaeolakes in the Arabian Peninsula, where water availability is a challenge for the future (e.g.…”

Section: Introductionmentioning

confidence: 99%

A humid early Holocene in Yemen interpreted from palaeoecology and taxonomy of freshwater ostracods

Mohammed

Frenzel

Keyser

et al. 2018

J. Micropalaeontol.

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Abstract. Lake or marsh sediments in the Qa'a Jahran-Dhamār area indicate a period of higher moisture availability in the early Holocene of the highlands of Yemen. Forty-two marl-peat sediment samples from eight stratigraphic sections of that area have been collected and are examined for the first time for their ostracod associations. Eight species belonging to seven genera and four families are reported. Their ecological tolerances and preferences are used to investigate the climatic and environmental changes in the early to mid-Holocene. Our data are compared and correlated with previous archaeological results, particularly from the region of Qa'a Jahran (Dhamār) in the vicinity of the village of Beyt Nahmi. We conclude that the wettest period of the Holocene was from about 7900 to 7400 cal yr BP, when northwards incursion of the Indian Ocean Monsoon caused intensified monsoon precipitation over southern Arabia.

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Ostracods from water bodies in hyperarid Israel and Jordan as habitat and water chemistry indicators

Cited by 36 publications

References 32 publications

TheIlyocyprispuzzle: A multidisciplinary approach to the study of phenotypic variability

TheIlyocyprispuzzle: A multidisciplinary approach to the study of phenotypic variability

The spring of Nadaouiyeh Aïn Askar — Paleoecology of a Paleolithic oasis in arid central Syria

A humid early Holocene in Yemen interpreted from palaeoecology and taxonomy of freshwater ostracods

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