What type of species is a Boreo-arctic Montane species found in the most northerly of the abstract five major circles of latitude as shown on maps of the Earth?
Arctic Circle The Arctic Circle is the most northerly of the abstract five major circles of latitude as shown on maps of the Earth. It marks the northernmost point at which the noon sun is just visible on the northern winter solstice and the southernmost point at which the midnight sun is just visible on the northern summer solstice. The region north of this circle is known as the Arctic, and the zone just to the south is called the Northern Temperate Zone. North of the Arctic Circle, the sun is above the horizon for twenty-four continuous hours at least once per year (and therefore visible at midnight) and below the horizon for twenty-four continuous hours at least once per year (and therefore not visible at noon); this is also true within the equivalent polar circle in the Southern Hemisphere, the Antarctic Circle.
Sakhalin Island taiga The Sakhalin Island taiga ecoregion (WWF ID:PA0607) covers most of Sakhalin Island, the largest island in Russia, and which lies in the Pacific Ocean separated only by Sea of Okhotsk and the Sea of Japan. The region is one of taiga (coniferous and mixed broad leaf forest landscape, with mixed larch forests at the lower elevations and shrubs at higher elevations.) The vegetation is heavily influenced by a maritime climate that is relatively warmer than the colder continental taiga in Siberia to the west. A long, thin island (1,000  km by 200  km), Sakhalin is connected to the mainland by ice bridges in the winter, so it shares certain flora and fauna species. It is in the Palearctic ecozone, and mostly in the Boreal forests/taiga ecoregion with a Humid continental climate, cool summer climate. It covers 403504 km2 .