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Speleology in Kazakhstan

Shakalov on 04 Jul, 2018
Hello everyone!   I pleased to invite you to the official site of Central Asian Karstic-Speleological commission ("Kaspeko")   There, we regularly publish reports about our expeditions, articles and reports on speleotopics, lecture course for instructors, photos etc. ...

New publications on hypogene speleogenesis

Klimchouk on 26 Mar, 2012
Dear Colleagues, This is to draw your attention to several recent publications added to KarstBase, relevant to hypogenic karst/speleogenesis: Corrosion of limestone tablets in sulfidic ground-water: measurements and speleogenetic implications Galdenzi,

The deepest terrestrial animal

Klimchouk on 23 Feb, 2012
A recent publication of Spanish researchers describes the biology of Krubera Cave, including the deepest terrestrial animal ever found: Jordana, Rafael; Baquero, Enrique; Reboleira, Sofía and Sendra, Alberto. ...

Caves - landscapes without light

akop on 05 Feb, 2012
Exhibition dedicated to caves is taking place in the Vienna Natural History Museum   The exhibition at the Natural History Museum presents the surprising variety of caves and cave formations such as stalactites and various crystals. ...

Did you know?

That ore karst is formation of interstices, caverns caves and other karst forms produced by solution in water from thermal springs and ore-bearing solutions [20]. synonyms: (french.) karst minier; (german.) zwischenraume, kavernen, hohlen im karst, gebildet durch thermalwasser oder erzhaltige losungen; (greek.) thermometallikon karst; (italian.) carsismo per dissoluzione idrotermale; (russian.) rudny karst; (spanish.) karst termomineral; (turkish.) cevher karsti; (yugoslavian.) rudni krs (kras).?

Checkout all 2699 terms in the KarstBase Glossary of Karst and Cave Terms

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KarstBase a bibliography database in karst and cave science.

Featured articles from Cave & Karst Science Journals
Chemistry and Karst, White, William B.
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Featured articles from other Geoscience Journals
Karst environment, Culver D.C.
Mushroom Speleothems: Stromatolites That Formed in the Absence of Phototrophs, Bontognali, Tomaso R.R.; D’Angeli Ilenia M.; Tisato, Nicola; Vasconcelos, Crisogono; Bernasconi, Stefano M.; Gonzales, Esteban R. G.; De Waele, Jo
Calculating flux to predict future cave radon concentrations, Rowberry, Matt; Marti, Xavi; Frontera, Carlos; Van De Wiel, Marco; Briestensky, Milos
Microbial mediation of complex subterranean mineral structures, Tirato, Nicola; Torriano, Stefano F.F;, Monteux, Sylvain; Sauro, Francesco; De Waele, Jo; Lavagna, Maria Luisa; D’Angeli, Ilenia Maria; Chailloux, Daniel; Renda, Michel; Eglinton, Timothy I.; Bontognali, Tomaso Renzo Rezio
Evidence of a plate-wide tectonic pressure pulse provided by extensometric monitoring in the Balkan Mountains (Bulgaria), Briestensky, Milos; Rowberry, Matt; Stemberk, Josef; Stefanov, Petar; Vozar, Jozef; Sebela, Stanka; Petro, Lubomir; Bella, Pavel; Gaal, Ludovit; Ormukov, Cholponbek;
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Your search for systematics (Keyword) returned 19 results for the whole karstbase:
Showing 1 to 15 of 19
The Eastern Monolistrinae (Crustacea, Isopoda): I. Systematics., 1964, Sket Boris
The author gives a diagnosis for all eastern Monoslistrinae known today, grouping them in the genus Monolistra and dealing with their geographical distribution. He also gives incomplete descriptions of some forms and also describes the new subgenus Monolistrella for M. velkovrhi Sket, the new species M. (Typhlosphaeroma) matjasici and M. (Microlistra) pretneri and the new subspecies M. (Monolistra) caeca intermedia, M. (Typhlosphaeroma) racovitzai pseudoberica and M. (Typhlosphaeroma) racovitzai conopyge.

Contribution to the systematics of African Stenasellinae (Asellote Crustaceans)., 1966, Magniez Guy
From 1897 to 1962, many species have been described as belonging to the genus Stenasellus Dollfus. Among all these the forms from Central Africa and one of Western Africa are not conform to the generic description of Racovitza 1924 obliging us to institute two new genera, Metastenasellus and Parastenasellus. The archaeic Asellota belong to the genus Stenasellus Dollfus, Johannella Monod, Metastenasellus nov.gen. and Parastenasellus nov. gen. are thus grouped in a sub family of Stenasellinae and the relationship between the different groups has still to be explained.

On a new species of Earthworm from a Mexican cave., 1968, Gates Gordon
Eodrilus mexicanus of the megadrile oligochaete family Acanthodrilidae is described along with some data as to development, regeneration and abnormality. Relationships with its American congeners, often inadequately characterized, are discussed and the present state of Eodrilus systematics is criticised. E. mexicanus seems likely to be of unusual interest as the second species of earthworm to have ovaries in segment xii.

Ecology, systematics and distribution of two sympatric in North-Germany living Bathynella species (Crustacea, Syncarida)., 1968, Husmann Siegfried
The sympatric occurrence of two bathynellids previously considered races of Bathynella natans; natans and stammeri; is evaluated as a natural ecological-genetic experiment. Since no hybrids appear in mixed populations, these forms are proven to be full species: Bathynella natans Vejdovsky and Bathynella stammeri (Jakobi). Besides the form of the mandibles, which until now was the only taxonomically useful diagnostic character in the genus Bathynella, 7 additional, suitably applicable morphological characters have been found (Table 3). The Bathynella biotope investigated is assigned to the "eustygopsammal" subterranean life province (Husmann 1966), which is associated with the "Parastenocaris-Bathynella" biocoenosis (Husmann 1962). This particular biocoenosis is evidently resistant to organic pollution of ground water. The sympatric existence of Bathynella natans and B.stammeri can be explained by consideration of the geo-limnological developmental history of the interstitial zone of the North German low plain. Sands and gravels were widely deposited in the North German Basin by northward-retreating glaciers, creating microcavernous living space and passages for the interstitial fauna. This microfauna could find passages in layers of sand under and along the northward-flowing streams. Primitive Ice-Age streams (,,Urstromtler" of Keilhack) formed east-to-west cross-connections between the south-north distributional corridors. The great geographical expansion of the tributary river courses which reached the north German plain before, during, and after the Ice Age suggests that ground water habitats were temporarily separated and later rejoined by orogenic movements of the earth's surface. Such an orogenically caused, geomorphological isolation lasting for a sufficiently long geological period could have led to the result that species, originating in isolation from the same phylogenetic stock, subsequently were brought together again in the same biotope. This is particularly true for bathynellids, which as archaic types (Lebensformtypen) of the ancient, extreme "mesopsammal" biotope (Remane) are quite likely to have become sympatric in such a manner.

On a new species of Earthworm from a Mexican cave., 1968, Gates Gordon
Eodrilus mexicanus of the megadrile oligochaete family Acanthodrilidae is described along with some data as to development, regeneration and abnormality. Relationships with its American congeners, often inadequately characterized, are discussed and the present state of Eodrilus systematics is criticised. E. mexicanus seems likely to be of unusual interest as the second species of earthworm to have ovaries in segment xii.

Ecology, systematics and distribution of two sympatric in North-Germany living Bathynella species (Crustacea, Syncarida)., 1968, Husmann Siegfried
The sympatric occurrence of two bathynellids previously considered races of Bathynella natans; natans and stammeri; is evaluated as a natural ecological-genetic experiment. Since no hybrids appear in mixed populations, these forms are proven to be full species: Bathynella natans Vejdovsky and Bathynella stammeri (Jakobi). Besides the form of the mandibles, which until now was the only taxonomically useful diagnostic character in the genus Bathynella, 7 additional, suitably applicable morphological characters have been found (Table 3). The Bathynella biotope investigated is assigned to the "eustygopsammal" subterranean life province (Husmann 1966), which is associated with the "Parastenocaris-Bathynella" biocoenosis (Husmann 1962). This particular biocoenosis is evidently resistant to organic pollution of ground water. The sympatric existence of Bathynella natans and B.stammeri can be explained by consideration of the geo-limnological developmental history of the interstitial zone of the North German low plain. Sands and gravels were widely deposited in the North German Basin by northward-retreating glaciers, creating microcavernous living space and passages for the interstitial fauna. This microfauna could find passages in layers of sand under and along the northward-flowing streams. Primitive Ice-Age streams (,,Urstromtler" of Keilhack) formed east-to-west cross-connections between the south-north distributional corridors. The great geographical expansion of the tributary river courses which reached the north German plain before, during, and after the Ice Age suggests that ground water habitats were temporarily separated and later rejoined by orogenic movements of the earth's surface. Such an orogenically caused, geomorphological isolation lasting for a sufficiently long geological period could have led to the result that species, originating in isolation from the same phylogenetic stock, subsequently were brought together again in the same biotope. This is particularly true for bathynellids, which as archaic types (Lebensformtypen) of the ancient, extreme "mesopsammal" biotope (Remane) are quite likely to have become sympatric in such a manner.

A new species of the subterranean Amphipod genus Allocrangonyx (Gammaridae), with a redescription of the genus and the remarks on its zoogeography., 1971, Holsinger John R.
The systematics of the North American, subterranean amphipod genus Allocrangonyx are revised and two species are recognized; A. pellucidus (Mackin) and A. hubrichti, new species. Allocrangonyx is critically compared with the European genus Niphargus and several endemic North American genera of the Crangonyx group. Because of its unique morphological position, Allocrangonyx is removed from the Crangonyx group and placed in the newly designated AlIocrangonyx group. Some factors believed to have influenced speciation within the genus are discussed in some detail.

A new species of the subterranean Amphipod genus Allocrangonyx (Gammaridae), with a redescription of the genus and the remarks on its zoogeography., 1971, Holsinger John R.
The systematics of the North American, subterranean amphipod genus Allocrangonyx are revised and two species are recognized; A. pellucidus (Mackin) and A. hubrichti, new species. Allocrangonyx is critically compared with the European genus Niphargus and several endemic North American genera of the Crangonyx group. Because of its unique morphological position, Allocrangonyx is removed from the Crangonyx group and placed in the newly designated AlIocrangonyx group. Some factors believed to have influenced speciation within the genus are discussed in some detail.

The second International Colloquium on the Genera Niphargus and Gammarus, Lyon, 1973. Review on the Niphargus working group., 1973, Ginet Rene
Following the First Colloquium held at Verona in 1969, it was planned to hold at Lyon in July, 1973, the Second International Colloquium dealing with the genus Niphargus and also with the genus Gammarus. As subject matter in discussions dealing with the first of these genera, the meeting was devoted mainly the balancing the various viewpoints (based on the European approach) and initiating a collective study of the systematics of these hypogean Amphipoda. The systematics are currently quite confused. Several modifications of the propositions of the Colloquium at Verona (published in 1972) were discussed. A third Colloquium, with the same objectives, is planned after an interval of three years.

The second International Colloquium on the Genera Niphargus and Gammarus, Lyon, 1973. Review on the Niphargus working group., 1973, Ginet Rene
Following the First Colloquium held at Verona in 1969, it was planned to hold at Lyon in July, 1973, the Second International Colloquium dealing with the genus Niphargus and also with the genus Gammarus. As subject matter in discussions dealing with the first of these genera, the meeting was devoted mainly the balancing the various viewpoints (based on the European approach) and initiating a collective study of the systematics of these hypogean Amphipoda. The systematics are currently quite confused. Several modifications of the propositions of the Colloquium at Verona (published in 1972) were discussed. A third Colloquium, with the same objectives, is planned after an interval of three years.

Critical evaluation of recent work on the systematics of subterranean Crustacea (with description of two new genera of Parabathynellidae, Bathynellacea)., 1976, Schminke Horst Kurt
This paper reviews critically some recent work on the systematics of subterranean Crustacea, in particular Jakobi's work on the Parastenocarididae (Copepoda), Serban's work on the Bathynellidae (Bathynellacea, Syncarida) and Schminke's revision of the Parabathynellidae (Bathynellacea, Syncarida). Is is pointed out that three different approaches have been adopted in each of the three cases and advantages and shortcomings of each of them are analysed. Finally descriptions are given of two new genera of Parabathynellidae, Afrobathynella gen. n. and Nunubathynella gen. n., from a locality near Port Elisabeth (South Africa).

On the Bathynella from Romania: B. (B.) boteai Serban, B. (B.) vaducrisensis n. sp., B. (B.) plesai Serban et B. (B.) motrensis Serban (Bathynellacea, Bathynellidae). Part II., 1976, Serban Eugne
In the second part of the note a discussion is given dealing with the importance of different characters in the systematics of the genus Bathynella Vejdovsky and with species individualisation in the sub-genus Bathynella (Bathynella) Vejdovsky. We emphasize the differentiation of some elements of the VIIIth male pereiopodes, these appendages never having the same morphology in different species. Taking into account the structure of the apical end of the pennian anterior plates, we suggest to group separately boteai with vaducrisensis and plesai with ruffoi. The main conclusions of the recent studies on the European Bathynella are also given.

New records for Salentinella Ruffo (Crustacea Amphipoda) from phreatic waters of Italy and Greece., 1985, Pesce Giuseppe L.
New localities for the subterranean amphipod Salentinella Ruffo from central-eastern Mediterranean are reported. New collecting localities are listed for Italy, continental Greece and islands of Cephalonie and Zante. Furthermore, some remarks are made about the systematics, the variability and the ecology of the genus. Moreover, the Author refers to the main characteristics of a Salentinella sp. from central Italy, showing intermediate features between S. angelieri and S. franciscoloi. A map of the distribution of the genus Salentinella in Italy and in the Balkan-Dalmatian Peninsula is enclosed.

238U-234U-230Th-232Th systematics and the precise measurement of time over the past 500,000 years, 1987, Edwards R. L. , Chen J. H. , Wasserburg G. J.

238U---234U---230Th---232Th systematics and the precise measurement of time over the past 500,000 years, 1987, Lawrence Edwards R. , Chen J. H. , Wasserburg G. J. ,
We have developed techniques to measure the 230Th abundance in corals by isotope dilution mass spectrometry. This, coupled with our previous development of mass spectrometric techniques for 234U and 232Th measurement, has allowed us to reduce significantly the analytical errors in 238U---234U---230Th dating and greatly reduce the sample size. We show that 6 x 108 atoms of 230Th can be measured to 30[per mille sign] (2[sigma]) and 2 x 1010 atoms of 230Th to 2[per mille sign]. The time over which useful age data on corals can be obtained ranges from a few years to ~ 500 ky. The uncertainty in age, based on analytical errors, is 5 y (2[sigma]) for a 180 year old coral (3 g), 44 y at 8294 years and 1.1 ky at 123.1 ky (250 mg of coral). We also report 232Th concentrations in corals (0.083-1.57 pmol/g) that are more than two orders of magnitude lower than previous values. Ages with high analytical precision were determined for several corals that grew during high sea level stands ~ 120 ky ago. These ages lie specifically within or slightly postdate the Milankovitch insolation high at 128 ky and support the idea that the dominant cause of Pleistocene climate change is Milankovitch forcing

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