Access the full text.
Sign up today, get DeepDyve free for 14 days.
K. May, R. Clifford (1967)
The Impaction of Aerosol Particles on Cylinders, Spheres, Ribbons and DiscsAnnals of Occupational Hygiene, 10
S. Jackson, M. Lyford (2008)
Pollen dispersal models in Quaternary plant ecology: Assumptions, parameters, and prescriptionsThe Botanical Review, 65
F. Burrows (1973)
CALCULATION OF THE PRIMARY TRAJECTORIES OF PLUMED SEEDS IN STEADY WINDS WITH VARIABLE CONVECTIONNew Phytologist, 72
J. Scurlock, G. Asner, S. Gower (2001)
Worldwide Historical Estimates of Leaf Area Index, 1932-2000
M. Kalacska, G. Sánchez-Azofeifa, J. Calvo-Alvarado, B. Rivard, M. Quesada (2005)
Effects of Season and Successional Stage on Leaf Area Index and Spectral Vegetation Indices in Three Mesoamerican Tropical Dry Forests 1Biotropica, 37
D. Greene, E. Johnson (1993)
Seed mass and dispersal capacity in wind-dispersed diasporesOikos, 67
(1966)
Deposition from moving aerosols
M. Aguiar, O. Sala (1997)
SEED DISTRIBUTION CONSTRAINS THE DYNAMICS OF THE PATAGONIAN STEPPEEcology, 78
A. Watkinson, J. Harper (1978)
The Demography of a Sand Dune Annual: Vulpia Fasciculata: I. The Natural Regulation of PopulationsJournal of Ecology, 66
D. Aylor, T. Flesch (2001)
Estimating Spore Release Rates Using a Lagrangian Stochastic Simulation ModelJournal of Applied Meteorology, 40
D. Greene, E. Johnson (1990)
The aerodynamics of plumed seedsFunctional Ecology, 4
Eduardo Fuentes, Ricardo Otaiza, M. Alliende, A. Hoffmann, A. Poiani (1984)
Shrub clumps of the Chilean matorral vegetation: structure and possible maintenance mechanismsOecologia, 62
D. Greene, C. Canham, K. Coates, Philip LePage (2004)
An evaluation of alternative dispersal functions for treesJournal of Ecology, 92
R. Norberg (1973)
AUTOROTATION, SELF‐STABILITY, AND STRUCTURE OF SINGLE‐WINGED FRUITS AND SEEDS (SAMARAS) WITH COMPARATIVE REMARKS ON ANIMAL FLIGHTBiological Reviews, 48
J. Bullock, I. Moy (2004)
Plants as seed traps: inter-specific interference with dispersalActa Oecologica-international Journal of Ecology, 25
D. Thiede, C. Augspurger (1996)
Intraspecific variation in seed dispersion of Lepidium campestre (Brassicaceae)American Journal of Botany, 83
David Greene, Mauricio Quesada, C. Calogeropoulos (2008)
Dispersal of seeds by the tropical sea breeze.Ecology, 89 1
S. Russell, E. Schupp (1998)
Effects of Microhabitat Patchiness on Patterns of Seed Dispersal and Seed Predation of Cercocarpus ledifolius (Rosaceae)Oikos, 81
D. Greene (1990)
The Aerodynamics and dispersal of plumed and winged seeds
D. Aylor, H. Mccartney, A. Bainbrioge (1981)
Deposition of Particles Liberated in Gusts of WindJournal of Applied Meteorology, 20
R. Guries, E. Nordheim (1984)
Notes: Flight Characteristics and Dispersal Potential of Maple SamarasForest Science, 30
Philip LePage, C. Canham, K. Coates, Paula Bartemucci (2000)
Seed abundance versus substrate limitation of seedling recruitment in northern temperate forests of British ColumbiaCanadian Journal of Forest Research, 30
T. Nuttle, J. Haefner (2005)
Seed Dispersal in Heterogeneous Environments: Bridging the Gap between Mechanistic Dispersal and Forest Dynamics ModelsThe American Naturalist, 165
C. Augspurger (1986)
MORPHOLOGY AND DISPERSAL POTENTIAL OF WIND‐DISPERSED DIASPORES OF NEOTROPICAL TREESAmerican Journal of Botany, 73
A. Watkinson (1978)
The Demography of a Sand Dune Annual: Vulpia Fasciculata: III. The Dispersal of SeedsJournal of Ecology, 66
Craig Sheldon, F. Burrows (1973)
The dispersal effectiveness of the achene-pappus units of selected Compositae in steady winds with convectionNew Phytologist, 72
Ran Nathan, G. Katul (2005)
Foliage shedding in deciduous forests lifts up long-distance seed dispersal by wind.Proceedings of the National Academy of Sciences of the United States of America, 102 23
N. Breda (2003)
Ground-based measurements of leaf area index: a review of methods, instruments and current controversies.Journal of experimental botany, 54 392
P. McEvoy, C. Cox (1987)
Wind Dispersal Distances in Dimorphic Achenes of Ragwort, Senecio Jacobaea.Ecology, 68 6
D. Greene, E. Johnson (1995)
Wind Dispersal of Seeds from a Forest Into a ClearingEcology, 77
An, Athan, Imon, L. A., Evin (2001)
Mechanistic models for tree seed dispersal by wind in dense forests and open landscapes
M. Soons, J. Bullock (2008)
Non‐random seed abscission, long‐distance wind dispersal and plant migration ratesJournal of Ecology, 96
E. Jongejans, A. Telenius (2004)
Field experiments on seed dispersal by wind in ten umbelliferous species (Apiaceae)Plant Ecology, 152
David Greene (2005)
THE ROLE OF ABSCISSION IN LONG-DISTANCE SEED DISPERSAL BY THE WINDEcology, 86
Summary 1 The role of collisions with vegetation elements in seed dispersal by wind has been examined only anecdotally. In particular, the idea that the effect of collisions in dispersal may depend on the aerodynamic class of the diaspore has not been broached. 2 We adapted a collision model for small particles to predict the probability of a winged or plumed seed colliding with a vegetation element as a function of the Stokes number (a dimensionless parameter which quantifies inertial tendency and includes diaspore terminal velocity, wind speed and diameter of the target element). 3 We performed experimental releases of seeds upwind of tree boles in two deciduous forest types (temperate and dry tropical) for 10 mid‐latitude and tropical species to test the collision model. The model was a reasonable expression of collision efficiency. At higher Stokes numbers, collisions were far more likely for seeds than for water droplets or other small particles. 4 Experimental releases were used in both forests to determine the effect of collisions with boles on distance travelled for several species. Seeds of the three species with asymmetric wings had significantly reduced dispersal following collisions; the single species with plumed seeds did not. 5 In a leafless tropical forest, we experimentally determined the frequency distribution of collisions per metre of travel for seeds released from a canopy. Approximately one collision occurred for every 2 m of flight through the volume occupied by branches and lianas. Distance achieved by asymmetric samaras was relatively unaffected by collisions with small vegetation elements, because the samaras quickly readopted stable autorotation. Conversely, bilaterally symmetric samaras had their dispersal greatly reduced. 6 Synthesis. The effect of collisions on dispersal depends on aerodynamic type. Collisions with small vegetation elements in forests should be more common for samaras than for plumed seeds, because plumed seeds generally have lower terminal velocities. Among winged seeds, collisions with branches will not seriously reduce dispersal except for bilaterally symmetric diaspores, because they are unable to rapidly regain stable autorotation. Reduction in dispersal due to collisions with boles will be unimportant because bole collisions, unlike branch collisions, are rare.
Journal of Ecology – Wiley
Published: Jul 1, 2008
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.