منابع مشابه
Canopy, snow, and lichens on woodland caribou range in southeastern Manitoba
I examined the relationships among snow cover (api), l ichen abundance, and canopy composition on the range o f the Aikens Lake population o f woodland caribou (Rangifer tarandus caribou) i n southeastern Mani toba. Percent cover o f forage lichens (Cladina spp.) was positively correlated w i t h max imum total thickness and w i t h max imum vertical hardness o f api. M i x e d communities o f ...
متن کاملPopulation size and fire intensity determine post-fire abundance in grassland lichens
Questions: What is the variability in abundance of lichens on grassland soil between and within fields after prescribed fire? Is post-fire lichen abundance an effect of pre-fire population size? Location: Cedar Creek Natural History Area, Minnesota, USA. Methods: Lichen abundance, estimated as ground cover and dominated by Cladonia spp., was mapped in plots in two fields before prescribed burni...
متن کاملThe role of wildland fire in caribou ecology
Objective 2: Improve, maintain or enhance habitat diversity by managing naturally ignited wildfire. a. Complete vegetation mapping of the Buckland Valley Wildlife Habitat Area (WHA), that was initiated during Fiscal Year (FY) 82, by end of FY84. Rationale: At this time, the land cover on that portion of the WHA west of the Tagagawik River has been mapped from 1:60,000 scale color IR photos and ...
متن کاملDecrease of lichens in Arctic ecosystems: the role of wildfire, caribou, reindeer, competition and climate in north-western Alaskapor_113
We review and present a synthesis of the existing research dealing with changing Arctic tundra ecosystems, in relation to caribou and reindeer winter ranges. Whereas pan-Arctic studies have documented the effects on tundra vegetation from simulated climate change, we draw upon recent long-term regional studies in Alaska that have documented the actual, on-the-ground effects. Our review reveals ...
متن کاملLichens
What are lichens? The term lichen refers to a symbiotic association between a filamentous fungus, the ‘mycobiont’, and at least one photosynthetic organism, the ‘photobiont’, consisting of a micro alga, a cyanobacterium, or both (Figure 1). Although the symbiotic nature of lichens was first revealed in 1867, the development of a lichen thallus is often so integrated (Figure 1D) that they have b...
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ژورنال
عنوان ژورنال: Journal of Range Management
سال: 1982
ISSN: 0022-409X
DOI: 10.2307/3898326