The Biogeography and Physicochemical Characteristics of Aquatic Habitats of Freshwater Ostracods in Canada and the United States

Curry, B. Brandon; Delorme, L. D.; Smith, Alison J.; Palmer, Donald F.; Stiff, Barbara J.

doi:10.1016/b978-0-444-53636-5.00006-8

Cited by 12 publications

(12 citation statements)

References 26 publications

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“…Seventeen species belonging to eight genera were recovered from the north-and east-face exposures (Table 5). Candona candida, Limnocythere itasca, Cypridopsis vidua, and Ilyocypris bradyi, species commonly found in a wide range of habitats including lakes, ponds, and streams (Delorme 1989;Curry et al 2012), were the most abundant ostracodes recovered. Several species in the collective assemblages prefer water bodies with variable hydrology in terms of water depth and total dissolved solids, particularly Fabaeformiscandona rawsoni, Limnocythere sharpei, L. posterolimba, and to a lesser degree, L. itasca.…”

Section: Ostracodesmentioning

confidence: 99%

Geology and paleoecology of a Middle Wisconsin fossil occurrence in Zorra Township, southwestern Ontario, Canada

et al. 2015

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Nonglacial deposits of Middle Wisconsin age are being discovered with increased frequency across a broad region of southern Ontario, Canada, and provide strong evidence for a time of significant ice withdrawal from the lower Great Lakes region. With each new discovery, a refined understanding of regional climatic and paleoecological environments is emerging. In this paper, we present the results of a sedimentological and paleoecological study of a subtill organic deposit in Zorra Township, southwestern Ontario. The organic deposit, which lies beneath Nissouri Phase Catfish Creek Till (Late Wisconsin), has been dated by accelerator mass spectrometry at between 50.5 and 42.9 14 C ka BP. The organic remains are contained within slack water pond deposits infilling a channel incised into till either of Early Wisconsin or Illinoian age. The fossil assemblage appears to be strongly influenced by taphonomic processes, including degradation due to oxidation, bacterial and fungal decay, and glacial overriding. Reworking and (or) recycling and selective sorting as well as long-distance transport has also influenced the composition of the fossil assemblage preserved. Nonetheless, meaningful paleoecological information is still obtained from this record. Collectively, the pollen and plant macrofossils indicate a boreal-type pine-spruce forest with temperatures cooler than present. The absence of arctic tundra plants, as are found in many other deposits of similar age in the lower Great Lakes basin, is notable. A pond or wetland inhabited by shoreline herbs, shrubs, and trees was present at or proximal to the site. The freshwater mollusc and ostracode assemblages are consistent with a shallow water habitat with dense submerged vegetation. The terrestrial mollusc assemblage suggests a taiga or transitional taiga-tundra fauna. Together, these fossil groups provide one of the most comprehensive environmental reconstructions of Middle Wisconsin time (oxygen isotope stage 3 or OIS3) in southern Ontario and serve to build on the ever-increasing database of paleoecological information accumulating for this episode of the late Quaternary.Résumé : Des dépôts non glaciaires d'âge wisconsinien moyen sont découverts de plus en plus fréquemment dans une vaste région du sud de l'Ontario (Canada) et fournissent des indices probants d'une période de retrait important des glaces de la région du bassin inférieur des Grands Lacs. Chaque nouvelle découverte permet une compréhension plus pointue des milieux climatiques et paléoécologiques régionaux. Nous présentons les résultats d'une étude sédimentologique et paléoé-cologique d'un dépôt organique qui sous-tend un till dans le canton de Zorra, dans le sud-ouest de l'Ontario. La datation par spectrométrie de masse par accélérateur du dépôt organique, qui sous-tend le till de Catfish Creek de la phase de Nissouri (Wisconsinien tardif), a donné des âges entre 50,5 et 42,9 14 C ka BP. Les restes organiques sont contenus dans des dépôts d'étang d'eau stagnante qui remplissent un chenal creusé dans du t...

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Section: Ostracodesmentioning

confidence: 99%

Geology and paleoecology of a Middle Wisconsin fossil occurrence in Zorra Township, southwestern Ontario, Canada

et al. 2015

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“…Within each of those settings, physical and chemical parameters, such as water temperature, major dissolved ion (solute) composition, and concentration (salinity as total dissolved solids, TDS), can further limit species distributions (Forester et al, 2005b). Since different environments commonly have characteristic species assemblages, fossil ostracodes are indicators of past environmental conditions and hydrologic habitats (Smith & Horne, 2002;Curry et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Aquifer and surface-water ostracodes in Quaternary paleowetland deposits of southern Nevada, USA

et al. 2016

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A diverse assemblage of Late Quaternary continental ostracodes (Class Crustacea) belonging to at least 15 genera and 40 species (including 11 new species and one new genus, Plicocandona, described here) was found in sediments of former groundwater discharge deposits located in valleys of southern Nevada, U.S.A. The fossiliferous deposits are located in Las Vegas, Coyote Springs, Indian Springs, Sandy, and Pahrump Valleys. The ostracodes include species that were probably living in wetmeadow, seep, flowing-spring, stream, and wetland environments, and include aquifer species. Those environments indicate a higher level of effective moisture than occurs today during several episodes of the Late Pleistocene to Early Holocene, from *140 to *9 ka. The ostracode assemblages are significant to our understanding of regional paleohydrology and also contribute to the growing knowledge of aquifer taxa diversity and biogeography.

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“…Ecological and biogeographical studies of nonmarine ostracods from the Neotropical bioregion are rare, despite the wide application of ostracods in paleoclimate and paleoecological reconstructions. Databases such as the European (OMEGA, Horne et al 2011) and North America databases (NACODe: North America Combined Ostracode Database; originally named NANODe (North American Nonmarine Ostracode Database) (Forester et al 2005;Curry et al 2012) are compiling data on the presence/ absence of ostracod species and associated hydrological/geochemical and climate conditions, to develop calibration datasets for paleo-reconstructions. The effort to build comprehensive databases will not be complete until data from the Southern Hemisphere are incorporated, particularly from South America, where the number of recorded ostracod species is low compared to other continents, including Australia and Africa (Martens et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Distribution of ostracods in west-central Argentina related to host-water chemistry and climate: implications for paleolimnology

et al. 2017

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Ecological and biogeographical studies of Neotropical non-marine ostracods are rare, although such information is needed to develop reliable paleoecological and paleoclimatic reconstructions for the region. An extensive, yet little explored South American area of paleoclimatic interest, is the aridsemiarid ecotone (Arid Diagonal) that separates arid Patagonia from subtropical/tropical northern South America, and lies at the intersection of the Pacific and Atlantic atmospheric circulation systems. This study focused on the Laguna Llancanelo basin, Argentina, a Ramsar site located within the Arid Diagonal, and was designed to build a modern dataset using ostracods (diversity, spatial distribution, seasonality, habitat preferences) and water chemistry. Cluster and multivariate analysis of the data indicated that salinity is the most significant variable segregating two ostracod groups. Limnocythere aff. staplini is the only species that develops abundant populations in the saline ephemeral Laguna Llancanelo during almost all seasons, and is accompanied by scarce Cypridopsis vidua in summer. The latter species is abundant in freshwater lotic sites, where Ilyocypris ramirezi, Herpetocypris helenae, and Cyprididae indet. are also found in large numbers. Darwinula stevensoni, Penthesilenula incae, Heterocypris incongruens, Chlamydotheca arcuata, Chlamydotheca sp., Herpetocypris helenae, and Potamocypris smaragdina prefer freshwater lentic conditions (springs), with C. arcuata and Chlamydotheca sp. found only in the Carapacho warm spring, which has a year-round constant temperature of~20°C. Seasonal sampling was necessary because some taxa display a highly seasonal distribution. Species that were recorded Electronic supplementary material The online version of this article (

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The Biogeography and Physicochemical Characteristics of Aquatic Habitats of Freshwater Ostracods in Canada and the United States

Cited by 12 publications

References 26 publications

Geology and paleoecology of a Middle Wisconsin fossil occurrence in Zorra Township, southwestern Ontario, Canada

Geology and paleoecology of a Middle Wisconsin fossil occurrence in Zorra Township, southwestern Ontario, Canada

Aquifer and surface-water ostracodes in Quaternary paleowetland deposits of southern Nevada, USA

Distribution of ostracods in west-central Argentina related to host-water chemistry and climate: implications for paleolimnology

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