Article: Qualitative reasoning about population and community ecology.
AI Magazine;  January 1, 2003 ;     700+ words ......accepted hypothesis, changes in the fire frequency influence the composition of the cerrado...dominated by grass species when the fire frequency increases. When the frequency decreases...particularly on how changes in the fire frequency influence the behavior of the cerrado...

Article: Madagascar's burning issue: The peristent conflict over fire.(prescribed burning)
Environment;  April 1, 2002 ;     700+ words ......impact of burning is complex. A variety of factors--including fire frequency and timing, weather, vegetation characteristics, and land...fire. However, human arrival marked a dramatic increase in fire frequency, which caused grasslands to spread significantly. (5) While...

Article: dormancy
A Dictionary of Biology;      69 words ......associated with dormancy help the organism survive adverse environmental conditions. Annual plants survive the winter as dormant seeds while many perennial plants survive as dormant tubers, rhizomes, or bulbs. Hibernation and aestivation in animals help them...

Article: Pass it on.(Chaplain's Corner)(Brief article)
DAV Magazine;  March 1, 2007 ;     313 words ......special sense of hope and renewal that hits us as the spring grass begins to draw and an occasional flower attacks the air from dormant seeds left over from last year. What an amazing event that speaks to me of God's presence and the comforting thought that there...

Article: BRIEFLY.(General News)
The Register-Guard (Eugene, OR);  July 17, 2006 ;     433 words ......Wednesday at the F.M. Wilkins Shelter of Hendricks Park, 2200 Summit Ave. Harvesting plant material, techniques to encourage dormant seeds to germinate and propagation of ferns from spores will be among the topics discussed. The event is sponsored by the Friends...

Article: Shrub line advance in alpine tundra of the Kluane region: mechanisms of expansion and ecosystem impacts.(InfoNorth)(Technical report)
Arctic;  December 1, 2007 ;     700+ words ......WARMING CLIMATE, northern ecosystems will face significant ecological changes such as permafrost thaw, increased forest fire frequency, and shifting ecosystem boundaries, including the spread of tall shrubs into tundra. In northern mountain ranges such as...

Article: Germination
Plant Sciences;      542 words ......seeds exhibit the same intense metabolic activity as non-dormant seeds but do not complete germination. Germination does not occur...hormone gibberellic acid, when applied in low concentrations to dormant seeds, will promote the completion of germination. How abscisic...

Article: The Effects of Land Use Changes on Forest Fires in Major Islands of Indonesia.(Brief Article)(Book Review)
Borneo Research Bulletin;  January 1, 2004 ;     313 words ......clearing is a necessary predecessor for extensive fires to occur. The study is designed to test the idea that an increase in fire frequency occurs only after the site has experienced a forest degradation process. Testing the hypothesis requires mapping fire occurrences...

Article: Germination and Growth
Plant Sciences;      700+ words ......seeds can germinate, the coats must be made permeable, either by mechanical force or by chemical or microbial action. Some dormant seeds germinate when treated with gibberellin or another plant hormone, cytokinin; these hormones work against the effects of ABA...

Article: Desert
Biology;      700+ words ......periods. Annual plants, completing their life cycle in a single year, are abundant in many deserts. They may spend years as dormant seeds; only after sufficient rainfall do they germinate and grow, reproducing quickly before the soil redries. Some invertebrates...

Article: Denesoline (Chipewyan) knowledge of barren-ground caribou (Rangifer tarandus groenlandicus) movements.
Arctic;  June 1, 2005 ;     700+ words ......narratives show that Denesoline communities have a fundamental awareness of caribou migration cycles. Most elders thought fire frequency and intensity had increased over their lifetimes and that caribou numbers and distribution had been affected. The majority...

Article: Plant Development
Biology;      700+ words ......signal for the embryo to initiate the synthesis of storage compounds and to undergo desiccation . Abscisic acid is present in dormant seeds and is thought to play an important role in maintaining seed dormancy. Germination and Seedling Development Embryo development...

Article: Seed Germination and Dormancy
Biology;      700+ words ......seeds in their natural environment and to optimize the conditions under which the resultant seedling can become established. Dormant seeds that require light will not germinate unless they are close to the soil surface; hence germinated seeds will not expend their...

Article: Mai-Thu Perret: Galerie Barbara Weiss.(contemporary art exhibition)
Artforum International;  April 1, 2006 ;     587 words ......reactivates the past for the present. The Crystal Frontier is a potential scenario that sits between history and realization like dormant seeds. What if women had designed their own kitchens, from tea sets to appliances? How would women, as objects fabricated by the...