Diel Activity of Brown Bears in Plitvice Lakes National Park, Yugoslavia

1986 ◽  
Vol 6 ◽  
pp. 177 ◽  
Author(s):  
Hans U. Roth ◽  
Djuro Huber
1987 ◽  
Vol 7 ◽  
pp. 221 ◽  
Author(s):  
Lidija Cicnjak ◽  
Djuro Huber ◽  
Hans U. Roth ◽  
Robert L. Ruff ◽  
Zvonimir Vinovrski

2019 ◽  
Vol 20 ◽  
pp. e00772 ◽  
Author(s):  
Ayana Ota ◽  
Etsuro Takagi ◽  
Masatoshi Yasuda ◽  
Mazlan Hashim ◽  
Tetsuro Hosaka ◽  
...  

2019 ◽  
Vol 133 (2) ◽  
pp. 151 ◽  
Author(s):  
Mathew S. Sorum ◽  
Kyle Joly ◽  
Matthew D. Cameron

Salmon (Oncorhynchus spp.) is a key dietary item for temperate coastal Brown Bears (Ursus arctos) across much of their circumpolar range. Brown Bears living in Arctic, interior, and montane environments without large annual runs of salmon tend to be smaller bodied and occur at much lower densities than coastal populations. We conducted ground and aerial surveys to assess whether Brown Bears fished for salmon above the Arctic Circle, in and around Gates of the Arctic National Park and Preserve. Here, we document the use of salmon by interior Brown Bears in the Arctic mountains of the central Brooks Range of Alaska. We believe our findings could be important for understanding the breadth of the species’ diet across major biomes, as well as visitor safety in the park and Brown Bear conservation in the region.


2013 ◽  
Vol 19 (1) ◽  
pp. 91-96 ◽  
Author(s):  
Ivana Maguire ◽  
Ivanka Špoljarić ◽  
Goran Klobučar
Keyword(s):  

2007 ◽  
Vol 48 (3) ◽  
pp. 247-255 ◽  
Author(s):  
Henry S. Chafetz ◽  
Dusan Srdoc ◽  
Nada Horvatincic

ABSTRACT Travertine forms spectacular waterfalls, barriers, and subaqueous finegrained lake-fill accumulations throughout the Plitvice National Park, Croatia, northwestern Yugoslavia. Barrier deposits form dams, behind which, the lakes of the Plitvice complex are situated. Three generations of low-magnesian calcite spar comprise the waterfall and barrier forming travertines. The initial precipitates generally are composed of cloudy, very finely to medium crystalline equant to bladed spar. A later generation is composed of clear, isopachous layers of medium to coarsely crystalline bladed crystals. Additionally, centimeter-thick laminated speleothem-like crusts, composed of clear, bladed to columnar spar, are the common precipitates around micritic accumulations within the older travertine. In comparison, the lake-fill deposits are primarily composed of moderately (recent lake-fill deposits) to well-developed (relict lake-fill deposits) 3-8 ^m calcite rhombohedrons. Petrographie analyses clearly show that cyanobacteria, fungi, and/or other microbial organisms bore into the spar and micritize it. This sparmicritization is pervasive throughout the waterfall and barrier deposits. Bladed spar crystals range from those which are pristine to those whose original bladed morphology can only be interpreted by comparison with laterally adjacent crystals. Individual samples display multiple generations of spar which have undergone various degrees of sparmicritization. Sparmicritization results in a thoroughly micritized accumulation in which evidence of the original spar composition has been completely obliterated.


Oryx ◽  
1981 ◽  
Vol 16 (2) ◽  
pp. 153-156 ◽  
Author(s):  
Franco Zunino

The brown bears in and around Italy's Abruzzo National Park live quite comfortably with the fairly dense human population surrounding the park. The people like the bears, even though they eat sheep, and are not afraid of them. But these same people also favour economic development, notably tourism, and tourists have now increased to the point where the disturbance they create is a serious threat to the bears. In particular tourist pressure in high summer has driven the bears to scatter into areas where they have little protection.


2016 ◽  
Vol 45 (1) ◽  
Author(s):  
Ranko Biondić ◽  
Hrvoje Meaški ◽  
Božidar Biondić
Keyword(s):  

2020 ◽  
Vol 49 (1) ◽  
Author(s):  
Anita Ptiček Siročić ◽  
Stanislav Kurajica ◽  
Dragana Dogančić ◽  
Nikolina Fišter

The Plitvice Lakes National Park is in the northwestern part of the Dinaric Karst in central Croatia. An important role of the soil in the karst is to purify the waters before they reach the phreatic zone. The soil is also a zone of accumulation, transformation, retardation and dilution of a potential pollutant. Knowing soil mineralogical composition is an important factor in understanding fate and transport of contaminants throughout lakes system. Samples of soil, peat and stream sediment were collected in the Prošće lake catchment and partly in the assumed zone of influence, X-ray diffraction (XRD) and Fourier Transform Infrared spectroscopy (FTIR) analysis of samples was performed to determine dominant mineral species in samples. XRD analysis showed predominance of lowquartz, which was found in all samples, most often as dominant phase. Dolomite was found in half of the samples, almost always as a significant phase while calcite was dominant phase in one of the samples. In most of the samples, members of the feldspars and chlorites groups, as well as muscovite, were present as minor phases. The absorption bands in the range of 2800-3000 cm-1 due to the organic matter are visible in spectra of all samples. These minerals can enter lakes system by surface waters, primarily streams and overland flow during snow thawing and rain, and also in cases of shore erosion. Terrigenic input in lakes is small but cannot be neglected due to the longlasting preservation efforts of the Prošće Lake recharge area, and the Plitvice Lakes National Park in general, terrigenous intake still does not pose a threat to water quality and tufa production. Considering the analyzed samples and characteristics of detected soil constituents, soils and sediments in the Prošće Lake catchment have the ability to retain and purify water on its way to the lakes. On the other hand, in case of the possible contamination in the recharge area of the lakes system, the pollutants can enter the system adsorbed on the soil particles. Learning more about the soils surrounding lakes gives valuable insight into their possible influence on lakes water chemistry and adds one piece of the puzzle into understanding this kind of a natural phenomenon.


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