Author: Eric MarechalPublisher: Frontiers Media SA
ISBN: 2889748502
Category : Science
Languages : en
Pages : 133
Book Description
Author: Katherine TowlerIslands in the Snow
Author: Mark HorrellPublisher: Mountain Footsteps Press
ISBN: 1912748010
Category : Sports & Recreation
Languages : en
Pages : 165
Book Description
Two days east of Lukla was a pleasant yak pasture surrounded by high peaks. When Col. Jim Roberts set out to look for it in 1953, he ended up making the first ascent of Mera Peak and sowing the seeds of Himalayan tourism. Mera Peak has become a popular goal for trekkers and novice mountaineers, but few people climb to its true summit, and fewer still travel beyond it to find the secret yak pasture that sparked Roberts’ journey. The yak pasture was the Hongu Valley, a hidden sanctuary of grassland, lakes and glaciers linking Mera Peak with the Everest region and Island Peak to the north. Fifty years after Roberts, Mark Horrell embarked on a trek through Nepal’s Khumbu region to follow in his footsteps, climb the two trekking peaks at either end of the valley, and resolve a long-standing mystery about Mera Peak’s height. Join Mark on a captivating journey through this enchanting region of high mountains and remote valleys.
Biological Soil Crusts: Spatio-temporal Development and Ecological Functions of Soil Surface Microbial Communities across Different Scales
Author: Shubin LanPublisher: Frontiers Media SA
ISBN: 2832553028
Category : Science
Languages : en
Pages : 339
Book Description
Biological soil crusts (biocrusts) are widely distributed throughout the world, and cover approximately 12% of the terrestrial surface. Biocrusts are composed of cyanobacteria, algae, lichens, mosses, and a great diversity of other microorganisms, which bind soil particles together to form a layer of biological-soil matrix on the soil surface typically of several millimetres thickness. They are important sites of regional and global microbial diversity and perform multiple ecological functions (multifunctionality). During the evolution of terrestrial life on earth, biocrusts are regarded as the main colonising photosynthetic organisms before the advent of vascular vegetation. They not only represent the early stages of terrestrial ecosystems, but also facilitate the ecosystem’s development and succession. Therefore, biocrusts are recognised as ecological engineers in the natural development of ecosystems and for the restoration of degraded terrestrial ecosystems. The development of biocrusts is highly heterogeneous, which is reflected on both temporal and spatial scales, and this heterogeneity is still clearly visible even in a small scale. However, up to now, only limited knowledge is acquired on biocrust temporal and spatial organisation. In particular there still is a large knowledge gap regarding the various biocrust communities under different developmental states and their related physiological metabolisms and ecological functions. Therefore, in-depth studies of these issues will undoubtedly further promote our understanding of the heterogeneous development of biocrusts, as well as their ecological multifunctionality in terrestrial ecosystems. The relevant contributions are expected to provide a scientific basis for the management of biocrusts and technology development (e.g. cyanobacteria-induced biocrust technology) for ecological restoration and the promotion of soil health.
Author: Peter P. Blanchard
Author: Christine Boothroyd![Island in the snow [video]. PDF](https://books.google.com/books/content/images/frontcover/j0zutAEACAAJ?fife=w150-h200)
Author: 
Author: 
Author: 
Author: 