HOME >> BIOLOGY >> NEWS
Biological legacies a key of ecological rebirth after Mount St. Helens eruption

Jerry Franklin was one of the first ecosystem scientists to visit Mount St. Helens after the eruption 20 years ago this May 18. Appearing particularly stark to the University of Washington researcher was the 125,000-acre blast zone, which looked like a moonscape, uniformly gray and, from initial appearances, sterile.

Investigations would, however, reveal that even in desolate-looking areas there were often what Franklin began to call "biological legacies" -- whole plants protected by snow, seeds, spores, root balls from which new plants could sprout, even downed trees as well as debris that offered footholds for other plants to take hold.

The importance of these remnants, the varied ways survivors and invading plants have both competed and depended on each other and the role happenstance can play revealed that classical studies of plant establishment were often too simple for what happens after major disturbances. Work at Mount St. Helens came at an important turning point in thinking about vegetation both for scientists interested in natural processes and for those interested in new ways of managing landscapes disturbed by human activities such as logging.

On and around the mountain, layers of snow and soil helped preserve plants and animals. At the higher elevations the relic sites were the size of a living room or smaller, according to UW botanist Roger del Moral, whose teams have worked at sites above 3,500 feet on the north side and above 4,500 feet on the south side of St. Helens.

One school of thought said the plants in those biological hotspots would colonize outward causing a re-greening of the area. Another said the red alderberry, slide alder, goatsbeard and other relic plants, many of which prefer shady conditions, would wither because the trees were flattened or obliterated in the blast.

But what del Moral and his fellow researchers found was that the patches tended to die back mainly at the edges. The exposed soil became a
'"/>

Contact: Sandra Hines
shines@u.washington.edu
206-543-2580
University of Washington
1-May-2000


Page: 1 2 3 4

Related biology news :

1. Biological oceanographers examine regime shifts in complex marine ecosystems
2. Biological computer diagnoses cancer and produces drug in a test tube
3. Biological cause of one form of blindness identified by SLU researchers
4. Biological trick reveals key step in melatonins regulation
5. Journal of Gerontology: Biological Sciences to offer forum
6. Biological clock more influenced by temperature than light
7. Systematics at a Crossroads: Biological and Philosophical Arguments
8. Biological and chemical agents in terrorism examined at AAN Annual Meeting
9. Biological Challenges to Humanity: Emerging and Re-emerging Pathogens
10. Biological evidence can persuade people to change unhealthy habits
11. Biological warfare: an emerging threat in the 21st century

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/9/2016)... Fla. , March 9, 2016  Crossmatch ... authentication and enrollment solutions, today announced the addition ... ® Altus multi-factor authentication platform. New ... InfoSec managers to step-up security where it,s needed ... Washington, DC . --> ...
(Date:3/3/2016)... 3, 2016  2016FLEX, organized by FlexTech, a ... advancements in flexible, hybrid and printed electronics. More ... - have gathered for short courses, technical session, ... electronics. The Flex Conference celebrates its 15 th ... R&D organizations, and universities contributing to the adoption ...
(Date:3/2/2016)... 2016 http://www.researchandmarkets.com/research/cmt3hk/global_biometrics ) ... "Global Biometrics as a Service Market 2016-2020" ... --> http://www.researchandmarkets.com/research/cmt3hk/global_biometrics ) has announced the ... a Service Market 2016-2020" report to ... and Markets ( http://www.researchandmarkets.com/research/cmt3hk/global_biometrics ) has announced ...
Breaking Biology News(10 mins):
(Date:5/3/2016)... , ... May 03, 2016 , ... ... fertility clinics and IVF laboratories. A contingency of reproductive endocrinologists, including Dr. ... and women experiencing infertility and to help them build families. , Ovation Fertility ...
(Date:5/2/2016)... PHILADELPHIA, PA (PRWEB) , ... May 02, 2016 ... ... is proud to report on the pre-launch success of their revolutionary, veterinarian-designed product ... allowing cats to stalk, trap, and play with their food the way nature ...
(Date:4/29/2016)... 2016 According to a ... "Separation Systems for Commercial Biotechnology Market - Global ... 2015 - 2023", the separation systems for commercial ... in 2014 and is projected to expand at ... to reach US$ 19,227.8 Mn in 2023. ...
(Date:4/29/2016)... Elekta is pleased to announce ... industry-leading treatment planning software, is available for clinical release. ... version 5.11 provides significant performance speed enhancements over ... to four times faster than in previous versions of ... standard Monte Carlo algorithm, users ...
Breaking Biology Technology:
Cached News: