Subfossil Chironomidae from Lake Tanganyika, East Africa. 2. Chironominae (Chironomini and Tanytarsini)     

Hilde Eggermont  Dirk Verschuren 《Journal of Paleolimnology》2003,29(4):423-457

Analysis of subfossil remains of larval Chironomidae in 38 surface-sediment samples from between 53 and 189 meter depth in Lake Tanganyika (East Africa) yielded 77 morphotypes, among which 7 Tanypodinae, 19 Orthocladiinae, and 51 Chironominae. Character-state differences between these morphotypes resemble differences at the species level in the better-known Holarctic fauna, hence we consider most of our Lake Tanganyika morphotypes equivalent to morphological species. Individual morphotypes were identified to species, genus, or tribe level depending on current alpha-taxonomic knowledge on the larvae of the group concerned, and the taxonomic resolution of preserved diagnostic features. This paper presents taxon diagnoses and an illustrated key to the Chironominae (Chironomini and Tanytarsini) in this collection. As the living chironomid fauna of Lake Tanganyika has never been comprehensively studied, we also briefly discuss faunistic aspects, and the ecology of the recovered species and genera in relation to benthic habitat diversity in Lake Tanganyika.  相似文献   

Reply to Sandgren and Smol: further discussion on chrysophyte cyst taxonomy     

Heikki Simola 《Journal of Paleolimnology》1993,9(1):63-68

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Neptune: A marine micropaleontology database     

Dave Lazarus 《Mathematical Geology》1994,26(7):817-832

Marine micropaleontology must in the future provide more precise chronologic and paleoenvironmental information, which in turn must be based on better, more consistent taxonomic and distributional data. Better tools for synthesis and standardization of this data are needed, as the ever expanding published literature is rapidly becoming unmanageable by purely manual compilation methods. The micropaleontology group at the ETH has developed a large relational database of marine microfossil data to partially meet this need. It currently contains biogeographic data on the distribution in Deep Sea Drilling Project (DSDP) and Ocean Drilling Program (ODP) holes of nearly 8,000 species of Cenozoic planktonic foraminifera, radiolaria, diatoms and calcareous nannofossils. The database also includes full stratigraphic occurrence (range chart) data for these fossil groups from more than 100 selected Neogene holes. A particular feature of the database is that all sample information and species names in the original reports are linked to newly created, updatable, comprehensive age models and synonymy lists which reflect modern chronology and taxonomic usage. Searches of the database automatically make use of this information in producing reports. Species ' occurrences, including first and last occurrence information, can be further analyzed using external spreadsheet and statistics packages; plotted by mapping programs; or displayed by a new program which creates composite age-range charts.  相似文献   

XI International Conference of Radiolarian Paleontologists (InterRad-XI)     

V. S. Vishnevskaya  E. O. Amon  M. S. Afanas’eva  D. A. Zas’ko  T. N. Palechek 《Stratigraphy and Geological Correlation》2007,15(3):333-339

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An identification guide to subfossil Tanypodinae larvae (Insecta: Diptera: Chrironomidae) based on cephalic setation   总被引：2，自引：0，他引：2  

Maria Rieradevall  Stephen J. Brooks 《Journal of Paleolimnology》2001,25(1):81-99

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Thesaurus and Domain Ontology of Geoinformatics     

Boriana Deliiska 《Transactions in GIS》2007,11(4):637-651

Geoinformatics is a comparatively new interdisciplinary science and as a part of space informatics uses methods and terminology of informatics and many natural sciences. An ontology of geoinformatics is discussed in the paper, especially concerning its structure, relationships with other ontologies, resources for development and utilization. The ontology of geoinformatics is a kind of domain ontology and has a layered structure consisting of syntactic and semantic layers. The corpus of this ontology is an existing multilingual dictionary of geographical information systems (GIS) enriched with terminology from other external sources. The building of the ontology is preceded by the development of a taxonomy and thesaurus of geoinformatics. The thesaurus database is converted into an OWL ontology by a Visual Basic application. The reusing of the ontology is proposed by its transformation in application ontologies for geoinformatics education.  相似文献   

A taxonomic study on the families Lepadellidae and Trichocercidae （Rotifera： Monogononta） of Turkey     

KAYA Murat ALTINDAG Ahmet 《中国海洋湖沼学报》2007,25(4):423-426

Thirteen rotifer species belonging to the families Lepadellidae and Trichocercidae were studied taxonomically from nine water bodies in Turkey. Lepadella biloba is a new entry to the Turkish rotifer fauna. All species were drawn under a light microscope using a camera lucida.  相似文献   

Integrative taxonomic description of Plakina kanaky,a new polychromatic sponge species from New Caledonia (Porifera: Homoscleromorpha)          下载免费PDF全文

César Ruiz  Julijana Ivanišević  Pierre Chevaldonné  Alexander V. Ereskovsky  Nicole Boury‐Esnault  Jean Vacelet  Olivier P. Thomas  Thierry Pérez 《Marine Ecology》2015,36(4):1129-1143

Four similar sponges of different colors, all unknown to science, were collected in submarine caves of New Caledonia. We aimed at determining whether the four chromotypes represented different species or phenotypic variations of a unique new species. We used an integrative taxonomic approach combining morphologic, molecular and metabolomic analyses. The main traits that define these specimens are a skeleton made of monolophose, trilophose and tetralophose calthrops only, high chemical diversity and a high abundance and diversity of prokaryotic symbionts. The symbiotic community includes two unique prokaryote morphotypes, which are described for the first time in Homoscleromorpha, and appeared to be vertically transmitted. Although several features slightly differ among chromotypes, the most parsimonious conclusion was to propose a single new species Plakina kanaky sp. nov. Our phylogenetic analysis indicated the paraphyly of the Plakina genus, with P. kanaky sp. nov. belonging to a clade that includes Plakina jani and Plakina trilopha. The present work demonstrates that integrative taxonomy should be used in order to revise the entire Plakinidae family and especially the non‐monophyletic genus Plakina.  相似文献   

海洋红藻岩生多管藻绒毛变种Polysiphonia scopulorum var. villum形态学研究          下载免费PDF全文

丁兰平  钟丽敏  谭华强  黄冰心 《热带海洋学报》2015,34(1):42-48

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Parasitic barnacles (Cirripedia: Rhizocephala) from New Zealand off‐shore waters     

J⊘rgen Lützen  Henrik Glenner  Anne‐Nina Lörz 《新西兰海洋与淡水研究杂志》2013,47(2):613-621

Nine genera and species of rhizocephalans were recorded from the off‐shore waters around New Zealand. Mitochondrial and nuclear gene sequences were used to examine base differences between the European and New Zealand species of Parthenopea. Serial sections to study the internal structures of the reproductive organs were made for the genera Thylacoplethus and Thompsonia. Two species, Parthenopea australis n. sp. and Thylacoplethus novaezealandiae n. sp. are new to science and described in detail. Parthenopea australis n. sp. is the first rhizocephalan species recorded from the vicinity of active cold seeps. Three rhizocephalans could not be identified as they were parasitised by hyperparasitic cryptoniscine isopods. The decapodhost species comprised the taxa Paguridae, Lithodidae, Galatheidae, Chirostylidae, and Callianassidae.  相似文献