Population fragmentation compromises population viability, reduces a species ability to respond to climate change, and ultimately may reduce biodiversity. We studied the current state and potential causes of fragmentation in grizzly bears over approximately 1,000,000 km of western Canada, the northern United States (US), and southeast Alaska. We compiled much of our data from projects undertake...

Since the end of 20th century, use geographic information systems and digital elevation models has reduced time required for improved quality morphometric analysis relief within river basins. However, researchers are constantly faced with problem choosing most accurate suitable terrain model their task. Many global, regional, local available. In this study, we comparatively analyzed accuracy AS...

We report the discovery of numerous in situ Miocene and Pliocene airfall volcanic ashes that occur within the hyperarid Dry Valleys region of the Transantarctic Mountains in southern Victoria Land, Antarctica. Ashes that occur above 1000 m elevation rest at the ground surface, covered only by a thin ventifact pavement 1 to 2 cm thick. The ash deposits are loose and unconsolidated and show no si...

It was proven during the herbarium revision work that confirmed data of species Knautia dipsacifolia in Hungary only came from a few stream valleys volcanic (andesite) mountains Matricum (Visegrád Mts, Börzsöny Mátra Mts) characterised with cool microclimate. All other country were found to be false reporting. Not single individual has been species, which is currently threatened extinction and ...

Purpose. Analysis of the relief and geological structure Vyzhnytskyi Cheremoskyi national natural parks (NNP) as important components complexes, which, well biota, are objects nature conservation institutions. Methods. Field research, geological-tectonic general geomorphological analysis NNP’s relief, review regional descriptive materials maps. Results. NNP located in South-Eastern part Ukraini...

During an 11 days mission in February 2000 the Shuttle Radar Topography Mission (SRTM) collected data over 80% of the Earth's land surface, for all areas between 60 degrees N and 56 degrees S latitude. Since SRTM data became available, many studies utilized them for application in topography and morphometric landscape analysis. Exploiting SRTM data for recognition and extraction of topographic ...

The article discusses the ice formations of small rivers in upper reaches Irkut river basin. Morphometric and morphological characteristics icings were obtained, map-scheme was created analyzed, features icing processes their influence on relief identified using data field research for 2021-2022, analysis cartographic material satellite images. It has been established that longest gentlest are ...

This paper investigates weathering pits at three granite sites located on mountain tops, in a former river bed, and the coastline of an island, respectively, from north to south eastern China aims characterize pit formation above settings terms mineral elemental transport. In these settings, main elements, groups debris fragments rock surface directly adjacent were analyzed. The chemical index ...