Time filter

Source Type

South Brisbane, Australia

Hadley K.R.,Queens University | Douglas M.S.V.,University of Alberta | McGhee R.,Curator Emeritus | Blais J.M.,University of Ottawa | Smol J.P.,Queens University
Journal of Paleolimnology

Until recently, major anthropogenic impacts on freshwater ecosystems were believed to be rare in North America prior to the period of European colonization. However, recent paleolimnological and archaeological data collected from the Canadian Arctic suggest that the whaling activities of Thule Inuit, who lived in small, nomadic communities, altered freshwater ecosystems centuries earlier. Using a comparative paleolimnological approach from two ponds situated adjacent to a former Thule winter settlement on south-eastern Bathurst Island (Nunavut, Arctic Canada), we record marked ecological changes in pond ecology due to eutrophication from the Thule's activities. The geography of our study site provided an interesting and rare opportunity for a comparative paleolimnological study of long-term Thule impacts on polar limnology, because our two study ponds (only ~50 m apart) were nearly identical in size and in geological and climatic settings, but differed markedly in the magnitude of Thule influence. Here, we recorded striking changes in diatom species assemblages, spectrally-inferred primary production, and nutrient geochemistry, indicating eutrophication in a small pond draining 18 Thule whale houses. Input of marine-derived nutrients from sea mammal carcasses used by the Thule for both sustenance and the construction of winter settlements, as well as other anthropogenic activities, coincided with a notable increase in the eutrophic diatom taxon Stephanodiscus minutulus, whereas no comparable changes were recorded in the nearby control pond for the duration of the sedimentary record. Although the diatom changes recorded in the affected site persisted after the period of Thule occupation, the most recent sediments and water chemistry suggest that the pond has largely recovered to near pre-impact conditions. © 2009 Springer Science+Business Media B.V. Source

A small pontoniine shrimp, Periclimenaeus pulitzerfinali, from Shelly Beach, Mombasa, Kenya, is described as new and illustrated. An appendix presents a complete list of Periclimenaeus species recorded from East Africa (Kenya, Zanzibar, Tanganika). Source

Lanza B.,Museo Zoologico La Specola Sezione Del Museo Of Storia Naturale Delluniversita | Broadley D.G.,Curator Emeritus
Acta Herpetologica

The status of the material of the genus Gonionotophis from north-eastern Africa (north of Latitude 12'S and east of Longitude 28'E) is reconsidered. The northernmost specimens of G. nyassae (Günther, 1888) fall within the known range of variation for that species. The available specimens of the G. capensis (A. Smith, 1847) complex from this region indicate that the number of postoculars varies from none to three, so that the 'diagnostic' lack of postoculars in M. fiechteri Scortecci, 1929 is invalid. The Somali specimens should be assigned to the north-eastern form G. chanleri (Stejneger, 1893), of which Simocephalus unicolor Boulenger, 1910 is a synonym. Data for G. chanleri is summarised from throughout its extensive range, and compared with data for adjacent populations of G. capensis and G. savorgnani (Mocquard, 1877). © Firenze University Press. Source

Two new species of pontoniine shrimp from the reefs around Cartier Island, Western Australia, are described and illustrated. Periclimenaeus ancylodactylus is identifiable from the minor second pereiopod dactyl and P. forcipulatus by the dactyl of the third pereiopod, both with unique features. Two species of this genus are already known from nearby Ashmore Reef and five more from the rest of Western Australia. © Koninklijke Brill NV, Leiden. Source

Birch W.D.,Curator Emeritus | Darragh T.A.,Curator Emeritus
Proceedings of the Royal Society of Victoria

George Henry Frederick Ulrich (1830-1900) was educated at the Clausthal Mining School in Germany and arrived in Victoria in 1853. After a short period on the goldfields, he was employed on the Mining Commission and then on the Geological Survey of Victoria until its closure in 1868. In 1870 he was appointed Curator and lecturer at the newly established Industrial and Technological Museum of Victoria. In 1878 he was appointed inaugural Director of the Otago School of Mines, New Zealand, a position he held until his death in 1900. His legacy includes detailed original maps of central Victorian goldfields, the foundation of the state's geological collections, and among the first accounts of Victorian geology published in German periodicals, until now little known. As the only scientist of his times in Victoria with the qualifications and expertise to accurately identify and properly describe minerals, he provided the first comprehensive accounts of Victorian mineralogy, including the identification of the first new mineral in Australia, which he named maldonite. His contribution to mineralogy is recognised by the species ulrichite. Ulrich was universally respected for his scientific achievements and highly regarded for his personal qualities. Source

Discover hidden collaborations