Now showing items 1-10 of 39
Multidimensional analysis of diatom morphologic and morphometric phenotypic variation and relation to niche
(1995)
There have been few past studies of relationships between phenotypic variation and population niche. In this study phenotypic variation was separated in to morphometric and morphologic variation which was related to niche ...
Fishes of the Mio-Pliocene Western Snake River Plain and Vicinity.
(2018-07-31)
Hybridization and introgression permitted gene transfer from Catostomus to Lake Suckers in modern and MioPliocene lakes of Western United States. Lake Sucker genera, Chasmistes, Deltistes, and Xyrauchen, were sympatric ...
MORE ON THEORETICAL MORPHOSPACE AND ITS RELATION TO FRESHWATER GOMPHONEMOID-CYMBELLOID DIATOM (BACILLARIOPHYTA) LINEAGES
(2008)
All forms from hypothesized gomphonemoid-cymbelloid lineages were constructed using
three-dimensional (3D) parametric equations with the same boundary intervals for all
forms. To construct a theoretical morphospace, the ...
A new approach to problems in taxonomy and ecology
(Schweizerbart, 2006-06)
Diatom systematics and ecology, two of Frank Round's major research interests, contain much uncertainty. This derives from several sources. The taxonomic diversity of diatoms appears to be much greater than previously ...
A New Species Of The Miniaturized Frog Genus Paedophryne (Anura: Microhylidae) From Papua New Guinea
(2015-08-20)
ABSTRACT – I describe a new species of Paedophryne from low-elevation foothill
rainforest on Normanby Island off southeastern Papua New Guinea. This new species is
the largest member of the genus so far discovered, with ...
Biological taxonomic problem solving using fuzzy decision-making analytical tools
(2006)
Biological taxonomy is at the heart of species identifications. Such identifications are instrumental in biodiversity studies, ecological
assessment, and phylogenetic analysis, among other studies. Fuzzy measures and ...
Geometry and Topology of Diatom Shape and Surface Morphogenesis for Use in Applications of Nanotechnology
(2005)
Diatoms have attracted the interest of those involved in nanotechnology and the development of this discipline for research and practical application. These microorganisms exhibit self-assembly of silica on the micrometer ...
Asterionella Hassall (Heterokontophyta, Bacillariophyceae) Taxonomic history and quantitative methods as an aid to valve shape diffrentiation
(2001-12)
The taxonomic history of the diatom genus Asterionella is sketchy at best. At present, delimitation of the genus, and species within it, are unclear. This is presented in a compilation of the taxonomy of Asterionella. In ...
Taxonomic Status Of The Neotropical Caecilian Genera Brasilotyphlus Taylor, 1968, Microcaecilia Taylor, 1968 And Parvicaecilia Taylor, 1968 (Amphibia: Gymnophiona: Siphonopidae)
(2013-07-01)
ABSTRACT — We review the taxonomic history and assess the status of three genera of siphonopid caecilians from South America. Evidence from dentition and squamation suggest that Microcaecilia is paraphyletic with respect ...
Fishes of the Mio-Pliocene Western Snake River Plain and Vicinity.
(2017-05-25)
We studied Rhinicthys osculus and its close relatives to discover evolutionary processes that operated to produce this widespread, polytypic fish group in an intermountain landscape of hundreds of small, isolated drainages. ...