A shrub bending model to calculate the albedo of shrub-tundra
نویسندگان
چکیده
منابع مشابه
Reindeer grazing increases summer albedo by reducing shrub abundance in Arctic tundra
Previous studies have shown that climate warming is causing shrub cover to increase at high latitudes. Increased shrub cover generally lowers surface albedo, which results in higher energy absorption and further warming. In parts of Fennoscandia, herbivory is known to control vegetation height and abundance, and thus preventing this positive feedback. Here, we combine field measurements of albe...
متن کاملShrub canopies influence soil temperatures but not nutrient dynamics: An experimental test of tundra snow–shrub interactions
Shrubs are the largest plant life form in tundra ecosystems; therefore, any changes in the abundance of shrubs will feedback to influence biodiversity, ecosystem function, and climate. The snow-shrub hypothesis asserts that shrub canopies trap snow and insulate soils in winter, increasing the rates of nutrient cycling to create a positive feedback to shrub expansion. However, previous work has ...
متن کاملBird Communities of the Arctic Shrub Tundra of Yamal: Habitat Specialists and Generalists
BACKGROUND The ratio of habitat generalists to specialists in birds has been suggested as a good indicator of ecosystem changes due to e.g. climate change and other anthropogenic perturbations. Most studies focusing on this functional component of biodiversity originate, however, from temperate regions. The Eurasian Arctic tundra is currently experiencing an unprecedented combination of climate...
متن کاملMoss Mediates the Influence of Shrub Species on Soil Properties and Processes in Alpine Tundra
In tundra ecosystems, bryophytes influence soil processes directly and indirectly through interactions with overstory shrub species. We experimentally manipulated moss cover and measured seasonal soil properties and processes under two species of deciduous shrubs with contrasting canopy structures, Salix planifolia pulchra and Betula glandulosa-nana complex. Soil properties (seasonal temperatur...
متن کاملFrequent Fires in Ancient Shrub Tundra: Implications of Paleorecords for Arctic Environmental Change
Understanding feedbacks between terrestrial and atmospheric systems is vital for predicting the consequences of global change, particularly in the rapidly changing Arctic. Fire is a key process in this context, but the consequences of altered fire regimes in tundra ecosystems are rarely considered, largely because tundra fires occur infrequently on the modern landscape. We present paleoecologic...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Hydrological Processes
سال: 2012
ISSN: 0885-6087
DOI: 10.1002/hyp.9582