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Key to the Cladoniaceae of the Guianas
K- (atranorin absent, homosekikaic acid often present); surface largely bare; brown to greenish- grey; forming broad, confluent, often flattish colonies Cladonia signata 9b K+ yellow (atranorin present; homosekikaic acid absent); surface thinly felty; ashy grey; forming regular, rounded ...
www.mnh.si.edu

Ozone: Good Up High, Bad Nearby
Increased UV-b radiation can be instrumental in forming more ground-level or "bad" ozone. What is Being Done About the Depletion of Good ... , a hat with a wide brim, and protective clothing with a tight weave. Use a broad spectrum sunscreen with a sun protection factor (SPF) of at least 15 and 30 is ...
www.policyalmanac.org

Permaculture Principle: 8
The ability of the designer to create systems that are closely integrated depends on a broad view of the range of jigsaw-like lock-and-key relationships that characterise ecological and ... can be seen as a top-down view of a circle of people or elements forming an integrated system. The apparently empty hole represents the abstract whole system that both arises ...
www.holmgren.com.au

Neotropical Grasslands: Habitat, Plants and Animals
In terms of land use and production potential, savannas separate into two broad categories: poorly drained and well-drained. Poorly Drained Savannas – Extensive tracts of savannas ... Shield also has extensive regions of savannas with isolated fingerlike extensions to the Atlantic coast forming an arc between Guyana and the mouth of the Amazon. Central America and the ...
conservegrassland.org

Cooperative Feeding Behavior of Crocodilians 1
Vast River, where they go to spawn. The Alegator post themselves forming a line across whe[re] we see them opening their voracious ... hyere's a little run [a channel] goes out erbout thirty yards broad. An' right hyere at the en' is a little round lake. These ... numbers of them arrayed side-by-side in rows across a broad channel as described in most reports of cooperative feeding. As a consequence ...
www.flmnh.ufl.edu

NMPIF Forests 1
(Reeves 1998) feeds on ground and up to16 ft (5m) often found ... minimum Black-throated Gray Warbler (Guzy and Lowther 1997) Associated Species: Great Horned Owl, Broad-tailed Hummingbird, Ash-throated Flycatcher, Plumbeous Vireo, Pinyon Jay, Violet-green Swallow, Mountain Chickadee, ...
hawksaloft.org

Permacullture: Zone 4 - Spring Creek
The forest is a mixture of native and naturalised vegetation with a predominace of willows forming a riparian canopy along the creek and its tributary gullies. The area has been largely ... of Ballarat) This submission to an inquiry into pest plants in Victoria, deals with both broad issue of public policy and sensible approaches to willow management along streams. The submission is ...
holmgren.com.au

Hoofmark - Grass Reinforcement, Stormwater Containment and Filtration Systems.
The Hoofmark (UK) Ltd Neoweb cellular confinement system offers a broad range of surface protection treatments ...
hoofmark.co.uk

Evolution, Mass Extinctions, and Mass Speciations
DNA sequences into longer groups. The most important characteristic of the DNA segment forming the gene is its position within the structural unit, which defines its function. Mutation ... produced by competition in terms of natural selection, but by genetic mutation on a broad scale brought on by ionizing radiation, and other factors (electrostatic fields, magnetic reversals, pulsed ...
livingcosmos.com