Zobrazeno 1 - 10 of 16 pro vyhledávání: '"Warren L. Kovach"'
1
Aquatic macrophyte classification, distribution, and traits in British lakes
Autor: Warren L. Kovach, C. A. Duigan, Margaret Palmer
Publikováno v: SIL Proceedings, 1922-2010. 30:477-481
(2008). Aquatic macrophyte classification, distribution, and traits in British lakes. SIL Proceedings, 1922-2010: Vol. 30, No. 3, pp. 477-481.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0d6dd0e276254b07f93c6677020b02ea
https://doi.org/10.1080/03680770.2008.11902169
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2
Vegetation communities of British lakes: a revised classification scheme for conservation
Autor: C. A. Duigan, Margaret Palmer, Warren L. Kovach
Publikováno v: Aquatic Conservation: Marine and Freshwater Ecosystems. 17:147-173
1. A revised classification scheme is described for standing waters in Britain, based on the TWINSPAN analysis of a dataset of aquatic plant records from 3447 lakes in England, Wales and Scotland, which is held by the Joint Nature Conservation Commit
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3e7f6d0342afc52460617b60f09443a9
https://doi.org/10.1002/aqc.780
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3
Relationships between littoral microcrustacea and aquatic macrophyte communities on the Isle of Skye (Scotland), with implications for the conservation of standing waters
Autor: C. A. Duigan, Warren L. Kovach
Publikováno v: Aquatic Conservation: Marine and Freshwater Ecosystems. 4:307-331
Littoral microcrustacean (Ctenopoda, Anomopoda, Onchyopoda) samples, aquatic macrophyte data and chemical measurements were collected from 51 freshwater lochs in the Isle of Skye, Scotland, during the summer of 1989. Canonical correspondence analysis
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::47e3888dfc70379964d0c783904518f9
https://doi.org/10.1002/aqc.3270040404
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4
Diversity changes in lycopsid and aquatic fern megaspores through geologic time
Autor: Warren L. Kovach, David J. Batten
Publikováno v: Paleobiology. 19:28-42
Quantitative data on lycopsid and aquatic fern megaspore taxa recovered from Carboniferous, Mesozoic, and Tertiary strata have been compiled in order to analyze the changes in diversity of the two groups of fossil plants that produced them. Numbers o
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::20abd93abd437ca6aa9fc519b174ab20
https://doi.org/10.1017/s009483730001229x
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6
A Study of the Distribution and Ecology of Littoral Freshwater Chydorid (Crustacea, Cladocera) Communities in Ireland Using Multivariate Analyses
Autor: Warren L. Kovach, C. A. Duigan
Publikováno v: Journal of Biogeography. 18:267
The distribution and ecology of the littoral fresh- water Chydoridae in Irish waterbodies were investigated. A total of 316 samples was taken at 287 substrate classified sampling sites throughout the Republic of Ireland, and rep- resentatives of thir
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1c33d232bb032a668d7efe2313dbe796
https://doi.org/10.2307/2845397
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7
Dispersed cuticles from the Eocene of North America
Autor: David L. Dilcher, Warren L. Kovach
Publikováno v: Botanical Journal of the Linnean Society. 88:63-104
KOVACH, W. L. & DILCHER, D. L., 1984. Dispersed cuticles from the Eocene of North America. Macerations of organic-rich clay from the Claiborne Formation (Middle Eocene) of Tennessee have yielded a wide variety of well-preserved dispersed cuticles. De
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d43b5b0a95723f67c3b4000dbfc4350f
https://doi.org/10.1111/j.1095-8339.1984.tb01565.x
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8
Morphology, ultrastructure, and paleoecology ofPaxillitriletes vittatussp. nov. From the mid‐cretaceous (Cenomanian) of Kansas
Autor: Warren L. Kovach, David L. Dilcher
Publikováno v: Palynology. 9:85-94
Large numbers of a new species of megaspore, Paxillitriletes vittatus, have been recovered through bulk maceration of a sample from the Dakota Formation (Cenomanian) of Kansas. Transmission electron microscopy has revealed a spore wall ultrastructure
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::32337732b936ac1dc67cf6ef357ac073
https://doi.org/10.1080/01916122.1985.9989289
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9
Worldwide stratigraphic occurrences of Mesozoic and tertiary megaspores
Autor: Warren L. Kovach, David J. Batten
Publikováno v: Palynology. 13:247-277
This paper presents data on the stratigraphic ranges of all known Mesozoic and Tertiary megaspores from around the world and demonstrates the potential of these palynomorphs for dating and correlating sedimentary sequences. Forms referable to more
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5d901b4c98e035c47cd793fb09a481d3
https://doi.org/10.1080/01916122.1989.9989362
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10
EARLY ANGIOSPERM REPRODUCTION: CALODA DELEVORYANA GEN. ET SP. NOV., A NEW FRUCTIFICATION FROM THE DAKOTA FORMATION (CENOMANIAN) OF KANSAS
Autor: Warren L. Kovach, David L. Dilcher
Publikováno v: American Journal of Botany. 73:1230-1237
A new angiosperm fructification, Caloda delevoryana, is described from the Cenomanian age Dakota Formation of central Kansas. It consists of a long, narrow, main axis with numerous secondary axes arranged helically around the main axis. These seconda
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2d28aa92c07db26956351252ca984b5e
https://doi.org/10.1002/j.1537-2197.1986.tb08570.x
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