Sphagnum Moss Disperses Spores with Vortex Rings -- Whitaker and Edwards 329 (5990): 406 -- Science
Sphagnum spores, which have low terminal velocities, are carried by turbulent wind currents to establish colonies many kilometers away. However, spores that are easily kept aloft are also rapidly decelerated in still air; thus, dispersal range depends strongly on release height. Vascular plants grow tall to lift spores into sufficient wind currents for dispersal, but nonvascular plants such as Sphagnum cannot grow sufficiently high. High-speed videos show that exploding capsules of Sphagnum generate vortex rings to efficiently carry spores high enough to be dispersed by turbulent air currents. Spores launched ballistically at similar speeds through still air would travel a few millimeters and not easily reach turbulent air. Vortex rings are used by animals; here, we report vortex rings generated by plants.
News from IAB
The mission of the International Association of Bryologists (IAB), as a society, is to strengthen bryology by encouraging interactions among all persons interested in byophytes.
Search blog content by labels
(not) funny (2) anniversary greeting (1) Asexual fragmentation (1) awards (5) Books (13) Bryological Times (8) bryophyte flora (2) Bryophyte photo of the week (16) bryophytes and herbicides (9) BT (1) celebrations (1) Classification (19) Courses (4) Crum workshop (1) Evolutionary biology (1) Extreme bryophytes (22) Field trips (3) Forays (3) Grants (1) IAB blog (7) IAB BT (1) IAB meetings (9) Job offers (3) Journals (5) meetings (2) Metzgeria (1) mitochondrial markers (1) Monophyly (62) morphology (4) moss culture (70) Moss gardens (3) Moss Horticulture (2) Most important bryophyte (5) moulds (1) News (9) newsletters (1) nominees (1) Paraphyly (15) Phylocode (3) pictures (3) polls (2) Recent literature (2) seminars (2) Species concepts (11) The Bryological Times (1) Websites (18) what is bryology? (5) Workshops (10)