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Showing 1 to 20 of 446 for “"systematics"”.
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The systematics of Hypodontium
Hypodontium is a moss genus currently comprising two species, H. dregei and H. pomiforme, endemic to Southern Africa, occurring in Zimbabwe and the eastern and southern parts of the Flora of Southern Africa areas. lt was originally assigned to the family Calymperaceae but was recently moved to …
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Systematics of Malesian Acalypha (Euphorbiaceae)
A comprehensive survey of the pollen morphology and ultrastructure of Acalypha, molecular phylogenetic analyses, and a systematic revision of Malesian Acalypha was undertaken. Using light microscopy, scanning and transmission electron microscopy, the palynological study shows that Acalypha pollen …
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The Systematics of The Enicocephalidae
Made available in DSpace on 2014-12-14T07:04:00Z (GMT). No. of bitstreams: 1 7804055.pdf: 2793033 bytes, checksum: f33ff7a7b152bf2af5eef070525945a0 (MD5) Previous issue date: 1977
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Molecular systematics of Plasmodiophora brassicae
The molecular systematics of Plasmodiophora brassicae Woronin, the causal agent of clubroot in crucifers were investigated using the small subunit ribosomal RNA gene sequence. Plasmodiophoromycetes, a group of obligate parasites of various higher plants, algae and Oomycetes have been classified in …
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Systematics of the macrourid fishes
The systematics of rattail fishes (Teleostei: Gadiformes, Macrouridae) is reexamined focussing on the $\textit{Coryphaenoides}$ group of genera, including $\textit{Albatrossia, Lionurus, Chalinura and Nematonurus}$. The data matrix consists of 69 osteological characters based on personal …
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Systematics of Ficinia clade (Cyperaceae)
Cyperaceae is a cosmopolitan graminoid family comprising about 110 genera and over 5500 species, represented in Southern Africa by 30 genera and over 500 species. The family is an integral part of wetland and grassland vegetations, a number of species have various local uses, and several species …
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Systematics of psilocaulon N.E.BR. (Aizoaceae)
… living and pickled material the morphology and systematics of Psilocaulon N. E. Brown sensu Ihlenfeldt & Bittrich is investigated. Thirteen species (including one insufficiently known species) are recognized: P. articulatum, P. bicorne, P. coriarium, P. dimorphum, P. dinteri, P. foliosum, P. …
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Oxygen isotope systematics of nitrification
During nitrification there is an exchange of oxygen atoms between water and nitrite, causing the [delta]¹⁸O of nitrate produced by nitrification to be closer to the [delta]¹⁸O of water than expected. A series of lab and field experiments were set up in order to quantify the exchange, and then …
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Support for taxonomic data in systematics
The Systematics community works to increase our understanding of biological diversity through identifying and classifying organisms and using phylogenies to understand the relationships between those organisms. It has made great progress in the building of phylogenies and in the development of …
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Systematics and Ecology of Truffles (Tuber)
… goal of my dissertation is to address the systematics, ecology, and biogeography of Tuber within a phylogenetic framework. Multiple loci were sequenced from Tuber ascoma collected worldwide including ectomycorrhizae, though an emphasis was placed on sampling taxon within North American. …
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Systematics, Phylogeography and Ecology of Elaphomycetaceae
<p>This dissertation is an investigation of the systematics, phylogeography, and ecology of a globally distributed fungal family, the Elaphomycetaceae. In Chapter 1, we assess the literature on fungal phylogeography, reviewing large-scale phylogenetics studies and performing a meta-data analysis of …
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Crustacean phylogenetic systematics and opsin evolution
<p>Composed of a chromophore bound to an integral membrane protein (opsin), visual pigments are phenotypically characterized by the wavelength of maximal absorption (λmax). The underlying molecular mechanism controlling λmax is the interaction between the opsin amino acid sequence and the …
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Systematics of the stickcatfishes (Farlowella, Loricariidae)
The catfish genus Farlowella (Loricariidae) is a group of 25 species that morphologically and behaviorally mimics sticks and are widely distributed throughout the Amazon, Orinoco, Paraguay, and smaller Atlantic drainages in northern South America, including in the Maracaibo basin of Venezuela. Six …
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The molecular systematics of Xenarthra and Perissodactyla.
The molecular systematics of Xenarthra and Perissodactyla.
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Comparative Systematics of Subterranean Amphipod Crustaceans (Hadzioidea)
… research for this dissertation investigates the systematics of genera within the amphipod families Hadziidae Karaman, 1943 and Melitidae Bousfield, 1973. In the family Hadziidae, <em>Bahadzia patilarga</em> is described from an anchialine cave on the southern coast of Cuba, <em>B. caymanensis …
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Molecular systematics of the cashew family (Anacardiaceae)
Anacardiaceae Lindl., the cashew family, is an economically important, primarily pantropically distributed family of 82 genera and over 700 species. This family is well known for its cultivated edible fruits and seeds (mangos, pistachios, and cashews), dermatitis causing taxa (e.g., Comocladia, …
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Systematics Within the Therevinae (Insecta: Diptera: Therevidae)
The 50 species currently in valid combination with Psilocephala Zetterstedt are reviewed and their generic placement hypothesized. Four new genera; Argolepida gen. nov., Manestella gen. nov., Nigranitida gen. nov., and Notiothereva gen. nov. are described. The monophyly of the higher Therevinae is …
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Systematics and Ecology of the Subgenus Pedomys
Made available in DSpace on 2014-12-14T16:11:10Z (GMT). No. of bitstreams: 1 7624175.pdf: 6428891 bytes, checksum: 23086ef8208f0fd05c3b08180d859283 (MD5) Previous issue date: 1976
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Biochemical Systematics of the Moxostomatini (Cypriniformes, Catostomidae)
Made available in DSpace on 2014-12-14T16:11:16Z (GMT). No. of bitstreams: 1 7820909.pdf: 5174931 bytes, checksum: 6851797f76fadbcb051c3eb7924767bf (MD5) Previous issue date: 1978
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