Global ETD Search

11	Demography and dendrochronology of a disjunct population of eastern hemlock in Southwestern Ohio Johnson, Marie 28 August 2018 (has links) No description available. Biology Botany Climate Change Conservation Demography Ecology Forestry eastern hemlock hemlock disjunct demography dendrochronology tree rings climate isolated population HWA hemlock woolly adelgid Clifton Gorge John Bryan Cantwell Cliffs management plan conservation edge population Yellow Springs tree core
12	Sixty-seven species newly recorded for the flora of Angola: recent findings from vegetation surveys and herbarium collections Lautenschläger, Thea, Göhre, Anne, Ditsch, Barbara, Baumgärtel, Christin, Monizi, Mawunu, Mandombe, José Lau, Lehnert, Marcus, Jongkind, Carel C.H., Persoon, Hans J.G.M., Cheek, Martin, Monro, Alexandre, Goyder, David, Darbyshire, Iain, Paton, Alan, Lages, Fernanda, Wells, Tom, Jürgens, Norbert, Finckh, Manfred, Meller, Paulina 30 May 2024 (has links) Angola is a tropical country with many biogeographical units and, therefore, has a high floristic diversity. Although an increasing number of floristic studies has been carried out in Angola in recent years, the country is still considered to be underinvestigated as many species being collected were previously unknown there. Several scientific groups working in different parts of Angola contributed to this paper their data from biodiversity assessments. With this we can add 67 species newly recorded for Angola, including two new generic records and five alien species, to the almost 7,300 vascular plant taxa known so far for Angola. Most of the new records for Angola are also present in different neighbouring countries, but they are little known, and their IUCN threat status has not been assessed yet. However, ongoing fieldwork and exploration are needed to complete the floristic knowledge of the understudied country. info:eu-repo/classification/ddc/550 ddc:550 info:eu-repo/classification/ddc/910 ddc:910
13	Taxonomy of selected groups of the genus \kur{Caloplaca} / Taxonomy of selected groups of the genus \kur{Caloplaca} ŠOUN, Jaroslav January 2011 (has links) The thesis deals with phylogeny, taxonomy and nomenclature of selected groups of the lichen genus Caloplaca. Particularly, the C. cerina group was closely investigated using molecular methods (ITS sequences), morphology and chemistry, based on material from Europe, and to some extent also from North America and western Asia. This approach resulted in the description of three new species (C. sterilis, C. subalpina, C. thracopontica), and detected an unexpected richness of lineages. Nomenclature, taxonomy, morphology and ecology of C. aurantia and C. flavescens from the C. aurantia group were studied in detail, including selection of the neotype of the former species. Their distribution was reviewed for the territory of the Czech Republic. Poorly known taxon C. aurantiomurorum from Algeria was lectotypified and synonymized with C. aurantia. Apart from the two groups, C. phlogina and C. scythica, differing partly in thallus colour and distinctly in distribution, were examined using both molecular (ITS sequences) and phenotypic data and found to be conspecific.

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