Guest Blog

Lakes and ponds are important components of mountain ecosystems. Mountain lakes are mainly formed by volcanic craters, landslides and glaciers, which create beautiful alpine and subalpine landscapes and thus attract many tourists and hikers (cover photo). Such aquatic habitats also harbor rich and unique biodiversity including plants, animals, fungi and microbes. In addition to the ecological importance, the geomorphological, hydrological and biogeochemical significance of mountain lakes are also known, as they integrate the upstream watershed processes and influences the natural and human ecosystems located downstream in their embedded catchments. Therefore, lakes are now considered to provide high ecosystem service values in  mountainous landscapes. Field sampling in a subalpine mountain lake (Daigaku-numa Pond) located in the Daisetsu-Kogen swamp, Hokkaido, Japan. Lake water and plankton samples were collected from an inflatable boat using samplers. Ecologists have long recognized the strong coupling between terrestrial and aquatic food webs. For example, in small headwater streams...

[caption id="attachment_3487" align="alignright" width="300"] Mt. Hakusan (2,702 m), 45 km south-south-east of KanazawaI recently visited Japan as a guest of the Japan Society for the Promotion of Science, hosted by Kenichi Ueno (University of Tsukuba) who has posted some JALPS blogs. He has asked me to post some reflections on my visit. On first sight, the Japanese and European Alps have quite a few aspects in common. Both are relative hotspots of biodiversity, with many protected areas and biosphere reserves. In places, both tourism – including large ski areas – and hydroelectricity are well-developed. There is a long history of alpinism, often associated with scientific research. There are steep slopes, and significant infrastructure to minimise natural hazards. Forests occupy the greatest proportion of the landscape – and are expanding because of decreasing harvests and the abandonment of agricultural land. Challenges include, first, accessibility to remote valleys – but tunnels and high...

[caption id="attachment_2819" align="alignright" width="300"] Alpine meadow, Mount Kitadake 1980.The attractions of Japan’s Southern Alps include dense evergreen coniferous forests and alpine meadows full of blooming globeflowers (or Trollius japonicus). These areas have been likened to an earthly paradise. In recent years however, sika deer have moved into this alpine zone. With them grazing on the rare plant community there is a danger that these alpine meadows, a symbol of the rich mountain environment, will disappear.Meadows vanishA questionnaire survey conducted in 1984 found that there were virtually no sika deer breeding in the northern part of the Southern Alps. Then, in the 1990s the sika deer quietly began to use the evergreen coniferous forests of Veitch's silver fir and Maries fir in the subalpine zone, as well as the Erman's birch forests and herbaceous communities. By the early 2000s the sika deer had encroached further into the subalpine zone and settled there,...

[caption id="attachment_2725" align="alignright" width="300"] Fig. 1: Mount Asahi-dake (2,291 m), the highest peak in DNP, in the foreground, and the Ohachi-daira caldera in the center (Photo: TW)Daisetsuzan National Park (DNP), located in central Hokkaido, a northernmost island of Japan, is Japan’s largest national park (226,764 hectares). Residents in the city of Sapporo with 2 million populations can access the park area in 2.5 to 3 hours by car, and can enjoy hiking/trekking and hot springs in the park’s volcanic landscape (Fig. 1). In spite of its close location to such a large city and in site of the large number of visitors, DNP is home to densely populated brown bears.New challenges are now emerging and addressed in DNP. Among them are offering learning opportunities to visitors and involving local stakeholders in the park management. However, most information is available only in Japanese, as most research publications (>2,800 in total) are written...