A subjective global checklist of the extant non-marine Ostracoda (Crustacea)

We present an updated, subjective list of the extant, non-marine ostracod genera and species of the world, with their distributions in the major zoogeographical regions, as well as a list of the genera in their present hierarchical taxonomic positions. The list includes all taxa described and taxonomic alterations made up to I July 2018. Taxonomic changes include 17 new combinations, 5 new names, I emended specific name and 11 new synonymies (1 tribe, 4 genera, 6 species). Taking into account the recognized synonymies, there are presently 2330 subjective species of non-marine ostracods in 270 genera. The most diverse family in non-marine habitats is the Cyprididae, comprising 43.2% of all species, followed by the Candonidae (29.0%), Entocytheridae (9.1%) and the Limnocytheridae (7.0%). An additional 13 families comprise the remaining 11.8% of described species. The Palaearctic zoogeographical region has the greatest number of described species (799), followed by the Afrotropical region with 453 species and the Nearctic region with 439 species. The Australasian and Neotropical regions each have 328 and 333 recorded species, respectively, while the Oriental region has 271. The vast majority of non-marine ostracods (89.8%) are endemic to one zoogeographical region, while only six species are found in six or more regions. We also present an additional list with 'uncertain species', which have neither been redescribed nor re-assessed since 1912, and which are excluded from the main list; a list of taxonomic changes presented in the present paper; a table with the number of species and % per family; and a table with numbers of new species described in the 20-year period between 1998 and 2017 per zoogeographical region. Two figures visualize the total number of species and endemic species per zoogeographical region, and the numbers of new species descriptions per decade for all families and the three largest families since 1770, respectively

A subjective global checklist of the extant non-marine Ostracoda (Crustacea)

We present an updated, subjective list of the extant, non-marine ostracod genera and species of the world, with their distributions in the major zoogeographical regions, as well as a list of the genera in their present hierarchical taxonomic positions. The list includes all taxa described and taxonomic alterations made up to I July 2018. Taxonomic changes include 17 new combinations, 5 new names, I emended specific name and 11 new synonymies (1 tribe, 4 genera, 6 species). Taking into account the recognized synonymies, there are presently 2330 subjective species of non-marine ostracods in 270 genera. The most diverse family in non-marine habitats is the Cyprididae, comprising 43.2% of all species, followed by the Candonidae (29.0%), Entocytheridae (9.1%) and the Limnocytheridae (7.0%). An additional 13 families comprise the remaining 11.8% of described species. The Palaearctic zoogeographical region has the greatest number of described species (799), followed by the Afrotropical region with 453 species and the Nearctic region with 439 species. The Australasian and Neotropical regions each have 328 and 333 recorded species, respectively, while the Oriental region has 271. The vast majority of non-marine ostracods (89.8%) are endemic to one zoogeographical region, while only six species are found in six or more regions. We also present an additional list with 'uncertain species', which have neither been redescribed nor re-assessed since 1912, and which are excluded from the main list; a list of taxonomic changes presented in the present paper; a table with the number of species and % per family; and a table with numbers of new species described in the 20-year period between 1998 and 2017 per zoogeographical region. Two figures visualize the total number of species and endemic species per zoogeographical region, and the numbers of new species descriptions per decade for all families and the three largest families since 1770, respectively

Contribution to the knowledge on the distribution of Recent free-living freshwater ostracods (Podocopida, Ostracoda, Crustacea) in Slovenia

An updated checklist of Recent free-living freshwater ostracods (Podocopida, Ostracoda, Crustacea) from Slovenia together with new records is presented. The new checklist is based on both the records extracted from the literature and the sampling in the field carried out during the last decade. The present checklist comprises 61 species. However, the eastern part of Slovenia and the surface waters are underrepresented. It is expected that the number of species will increase in the future

Principal component analysis on thermal infrared time-series of two pre-alpine catchments in Lower Austria, Ybbs and Traisen

Diskretisierte hydrologische Modelle liefern wichtige Beiträge für das Verständnis menschlicher Einflüsse auf die Wasserressourcen durch die Analyse von räumlich verteiltem Verhalten hydrologischer Variablen. Jedoch ist die Parametrisierung von räumlich verteilten physikalischen und hydrologischen Eigenschaften eine der größten Herausforderung in der Entwickelung von solchen Modellen. Eine mögliche Lösung wird in der Identifikation der heterogenen Verteilung der wasserbezogenen physikalischen Prozesse gesehen, in dem Varianzen der thermischen Eigenschaften von ober- und unterirdischen Merkmalen im Wassereinzugsgebiet dargestellt werden. Im Anschluss an den von Müller et al. (2014) entwickelten Ansatz, wird eine Zeitreihe von TIR-Fernerkundungsdaten mittels Hauptkomponentenanalyse für die Einzugsgebiete der Ybbs und Traisen untersucht. Es wird gezeigt, dass die raumzeitliche Verteilung der thermischen Eigenschaften mit Bezug auf den Wasser- und Energiehaushalt mittels Hauptkomponenten-analyse extrahiert werden kann. Die ersten drei Hauptkomponenten erklären einen kumulativen Anteil von 89% bzw. 86% der Gesamtvarianz der thermischen Eigenschaften in den 12 bzw. 11 Landsat 5 TM TIR-Bildern. Die verbleibende Differenz wurde vorübergehenden Effekten, wie Hintergrundrauschen oder atmosphärischen Störungen zugeschrieben. Den Zusammenhang zwischen den hervorgebrachten Mustern thermischer Variabilität und den dominierenden Landschaftselementen wird aufgezeigt. Zudem wurde die Empfindlichkeit der Methode gegenüber der Qualität des Datensatzes getestet. Die Hauptkomponentenanalyse stellte sich bei der Ableitung der Muster, welche die Verteilung direkter interner thermischer Eigenschaften darstellen, als hilfreich heraus. Hauptkomponentenanalyse von TIR-Bilder stellt eine gründliche Methode dar, welche durch die Ableitung von physikalisch aussagekräftigen Mustern, die Glaubwürdigkeit hydrologischer Parameter erhöht.Distributed hydrological models provide important contributions in understanding human impacts on water resources by analysing spatially variable hydrological behaviour. However parameterization of spatially distributed properties related to physical/hydrological behaviour exhibits some major difficulties in the models. A potential solution is the identification of heterogeneity of water related physical processes by displaying variances of thermal properties of surface and subsurface characteristics. Following the approach developed by Müller et al. (2014), Principal Component Analysis (PCA) has been applied to a time-series of Thermal Infrared (TIR) remote sensing data of the Ybbs and Traisen catchment. The spatiotemporal distributions of thermal properties with regard to the water/energy balance could be extracted within principal components. The first three principal components explain a cumulative proportion of 89% resp. 86% of the total variance inherent in the time-series of 12 resp. 11 Landsat 5 TM TIR-images. The remaining variance was attributed to transient effects, such as background noise or atmospheric disturbances. The relation between patterns of thermal variability in the first components and the most dominant landscape elements, exhibiting controls on thermal properties, is drawn. It was further assessed how sensitive the principal components are to the quality of the dataset. Spatial and temporal dimensions as well as shadowing effects affecting mountainous environment are discussed. PCA on TIR time-series was found useful in the deduction of patterns representing the variability of thermal properties at catchment scale. PCA represents a rigorous method in the deduction of physical meaningful hydrological patterns in the establishment of credible parameters.Claude MeischZsfassung in dt. SpracheWien, Univ. für Bodenkultur, Masterarb., 2015(VLID)108342

On freshwater Ostracoda (Crustacea) collected on the Canary Islands

Les auteurs ont examiné une collection de 38 échantillons d’Ostracodes d’eau douce récoltés par le Prof. J. H. Stock sur les Iles Canaries de 1985 à 1987. Seules quelques espèces ont été trouvées. Cypridopsis lanzarotensis fut décrite par Mallwitz (1984) de l’île de Lanzarote (îles Canaries); c’est la première fois qu’elle est signalée depuis sa découverte. Dans le présent travail, l’espèce est transférée dans le genre Sarscypridopsis McKenzie 1977. Les espèces suivantes sont signalées pour la première fois des Iles Canaries: Plesiocypridopsis newtoni (Brady & Robertson, 1870); Cypretta seurati Gauthier, 1929 ainsi que les deux espèces cosmopolites Cypridopsis vidua (O. F. Müller, 1776) et Heterocypris incongruens (Ramdohr, 1808). La taxonomie, l’écologie et la distribution géographique des trois premières espèces sont brièvement discutées

Contribution to the knowledge on the distribution of Recent free-living freshwater ostracods (Podocopida, Ostracoda, Crustacea) in Slovenia

Avtorja predstavljata najnovejši seznam recentnih vrst prostoživečih dvoklopnikov (Podocopida, Ostracoda, Crustacea) iz celinskih voda Slovenije ter nove najdbe za Slovenijo. Novi seznam temelji na podatkih, povzetih iz obstoječih publikacij, ter podatkih, pridobljenih med terenskim vzorčenjem v zadnjih 10 letih, ter vsebuje 61 vrst. Pričakovati je, da je število vrst veliko večje, saj primanjkuje podatkov iz vzhodne Slovenije in iz površinskih vod, ki so manj intenzivno vzorčevane kot podzemne vode.An updated checklist of Recent free-living freshwater ostracods (Podocopida, Ostracoda, Crustacea) from Slovenia together with new records is presented. The new checklist is based on both the records extracted from the literature and the sampling in the field carried out during the last decade. The present checklist comprises 61 species. However, the eastern part of Slovenia and the surface waters are underrepresented. It is expected that the number of species will increase in the future

A review of the genus Cavernocypris Hartmann (Ostracoda, Cypridopsinae): Systematics, ecology and biogeography

The genus Cavernocypris Hartmann, 1964 is revised. Cavernocypris lindbergi Hartmann, 1964 is shown to be synonymous with Cavernocypris subterranea (Wolf), which is the type-species of the genus. Cypridopsis shadini Akatova, 1950 and Cypridopsis coreana McKenzie, 1972 are transferred into the genus Cavernocypris (these are two new combinations). Cavernocypris shadini nov. comb. is shown to be synonymous with Cavernocypris subterranea. A new species Cavernocypris wardi n. sp. from Colorado, USA, is described. The descriptions of C. subterranea and C. coreana are completed. The genus Cavernocypris at present includes three species: Cavernocypris subterranea (Wolf, 1920), Cavernocypris coreana (McKenzie, 1972) nov. comb. and C. wardi n.sp. The phylogenetic relationships between the three species are discussed. C. coreana seems to be the most primitive

Neglecandona altoides (Petkovski, 1961) nov. comb. and the genus Neglecandona Krstic, 2006 (Crustacea, Ostracoda, Candonidae)

International audienc

Towards periodic and time-referenced flood risk assessment using airborne remote sensing

Flood risk management is founded on the regular assessment of damage potential. A significant parameter for assessing damage potential is the number of at-risk objects. However, data sets on exposure are often incomplete and/or lack time-references. Airborne remote sensing data, such as orthophotos, offers a regularly-updated, time-referenced depiction of land use. As such, remote sensing data compensates for incomplete data sources (such as digital cadastral maps). Orthophotos can even be used to analyze the temporal dynamics of flood damage potential, providing that time-referenced information is available for multiple time points. This paper describes a method for integrating orthophotos into flood risk analyses. In Austria, orthophotos are updated every three years, allowing their integration into cyclical flood risk assessments. The results of a case study presented in this paper demonstrate that orthophotos are most useful where other data sources, such as digital cadastral maps, are incomplete. In such situations, orthophotos lead to a significant increase in estimated damage potential. Orthophoto analysis allows damage potentials to be re-assessed at regular intervals, another major advantage over digital cadastral maps. Orthophoto analysis thus supports the evaluation of flood risk management options