Ostracod evidence for the Neolithic environment of Rio Sizandro, Portugal

Lord, Alan; Cabral, Maria Cristina; Dambeck, Rainer; Kunst, Michael

doi:10.1007/s12549-011-0055-3

Cited by 30 publications

(18 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Numerous studies have been focused on palaeoenvironmental reconstructions based on a multivariate analysis (stratigraphic units, mineralogical data, macro-and microfaunal assemblages, isotopic trends) of cores collected in freshwater environments, including the ostracod analysis (De Deccker and Forester 1988;Lord et al 2011). Autoecological stratigraphic analysis of ostracod assemblages is especially interesting in lakes where the persistence of local populations is often threatened by disturbance and changes in both water availability and quality.…”

Section: Palaeoenvironmental Trendsmentioning

confidence: 99%

Freshwater ostracods as environmental tracers

Muñoz

Abad

Bodergat

et al. 2013

Int. J. Environ. Sci. Technol.

148

View full text Add to dashboard Cite

This paper revises the response of freshwater ostracods to different environmental conditions and anthropogenic impacts, with a worldwide overview of the potential use of these microcrustaceans as bioindicators and several examples of applications in different scenarios. The development of either a single species or an ostracod assemblage is influenced by physical-chemical properties of waters (salinity, temperature, pH, dissolved oxygen), hydraulic conditions, bottom grain sizes or sedimentation rates. In addition to population and community changes, morphological and geochemical changes can also be detected in the ostracod carapace, which serves as a tracer of the water quality. All these features permit to delimit the spatial effects of urban sewages, mining effluents, agricultural wastes, watershed deforestation or road building. These data are the basis for the palaeoenvironmental reconstruction of cores, with an interesting application to archaeology. In addition, favourable results of recently developed bioassays, coupled with an important variability of local assemblages under changing conditions in both waters and sediments, suggest that these microcrustaceans may included between the most promising sentinels groups in freshwater areas. These microcrustaceans show high sensitivity to pesticides, herbicides, heavy metal pollution and oil inputs.

show abstract

Section: Palaeoenvironmental Trendsmentioning

confidence: 99%

Freshwater ostracods as environmental tracers

Muñoz

Abad

Bodergat

et al. 2013

Int. J. Environ. Sci. Technol.

148

View full text Add to dashboard Cite

show abstract

“…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.

View full text Add to dashboard Cite

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.

show abstract

“…The ecophenotypical plasticity of Cyprideis (Wouters, 2002) and in particular of the living euryhaline species Cyprideis torosa, has been studied in detail with regards to the soft parts, surface ornamentation, sieve pore shape and size (Rosenfeld and Vesper, 1977;Van Harten, 1996, 2000Wouters, 2002;Keyser and Aladin, 2004). In particular, the occurrence of noded and un-noded forms of C. torosa or some other ostracod groups such as Limnocythere have often been used as a proxy of palaeoenvironmental changes (Aladin, 1993;Mourguiart and Carbonel, 1994;Kalbe et al, this issue;Rossi et al, this issue;Lord et al, 2011). When Cyprideis is found in inland waterbodies, its occurrence poses questions about the salinity of the water and could be interpreted as a signal of increased salinity linked to evaporation, or as the witness of the occurrence of saline springs which affect locally the freshwater body (Hula Valley, Israel, in Kalbe et al, this issue).…”

Section: Ostracods As Key Proxies To Reconstruct Ancient Wetland Palamentioning

confidence: 99%

“…Along the Mediterranean coasts many coastal harbours have been studied with a geoarcheological approach that includes the use of ostracod analyses, as in Alexandria in Egypt , Marseille in France (Morhange et al, 2003), Luna and Portus in Italy (Bini et al, 2012;Mazzini et al, 2011;Goiran et al, 2010), ancient Tyre in Lebanon (Marriner et al, 2008), Kition in Cyprus and Ephesus in Turkey (Stock et al, 2013). In continental settings, ostracods have recently been used to reconstruct the salinity and aquatic environments in the Neolithic Rio Sizandro, Portugal (Lord et al, 2011), to shed light on the complex fluvial, sea-level and archaeological history of the Thames River at Swanscombe, England , to investigate the palaeoenvironment and palaeoclimate at Boxgrove, England (Holmes et al, 2010), and to study the long-term evolution of the Paleolithic sites in a desert oasis in Syria (Le Tensorer et al, 2007).…”

Section: Introductionmentioning

confidence: 99%