The present study was based on the analysis of spraints (n = 294) collected between December 2005 and November 2007. The importance of each type of prey was determined by absolute and relative frequency. Niche breadth was also estimated. The results were reported as mean (± SD) of relative frequencies. Fish were the main prey found in spraints (57.8 ± 7.0%). Fish from Callichthyidae family were...

Lontra provocax is an endemic species from Patagonia that has been categorized as "endangered" by the International Union for Conservation of Nature. In this study, noninvasive molecular methods were used to investigate the genetic diversity and haplotype distribution of L. provocax in Argentinean Patagonia. We analyzed 150 scat samples collected from 1995 to 2006 and obtained 13 sequences of c...

Salmon carcasses were recorded during October December along spawning streams in 3 study areas: 1 upper Shee Water, R. Tay system (2000 & 2001); 2. Upper Clunie Water, Aberdeenshire Dee system (2000 [part of area] and 2001) and 3. Kinlochewe River, R. Ewe system (2001 only). Estimates of numbers of salmon within each study area are based on fish observations, redd counts and counts at fish trap...

We investigated leaf, cone and fruit impressions preserved in a siltstone deposit between coal seams the late Paleocene Tongue River Member near Otter, southeast Montana, to assess floristic diversity composition. document presence of Taxodium based on seed scales as well foliage branches associated pollen cones, low-diversity angiosperm assemblage about 15 genera dominated by Platanaceae (Plat...

We present rst steps towards fully automated deduction that merely requires the user to submit proof problems and pick up results. Essentially, this necessitates the automation of the crucial step in the use of a deduction system, namely choosing and connguring an appropriate search-guiding heuristic. Furthermore, we motivate why learning capabilities are pivotal for satisfactory performance. T...

Roos, A. 2013. The Otter (Lutra lutra) in Sweden: Contaminants and Health. Acta Universitatis Upsaliensis. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 1051. 47 pp. Uppsala. ISBN 978-91-554-8688-4. In the 1950s the otter started to decline in numbers and distribution in Sweden and other parts of Europe. In 1972 a game law came into force, l...

Because sea otters (Enhydra lutris) exert a wide array of direct and indirect effects on coastal marine ecosystems throughout their geographic range, we investigated the potential influence of sea otters on the ecology of Bald Eagles (Haliaeetus leucocephalus) in the Aleutian Islands, Alaska, USA. We studied the diets, productivity, and density of breeding Bald Eagles on four islands during 199...