Applications of particle image velocimetry for seed release studies

Katherine M. Marchetto, Matthew B. Williams, Eelke Jongejans, Richard Auhl, Katriona Shea

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Nonrandom seed release is an important determinant of how far seeds disperse, but the mechanisms that promote wind-related seed release under varying atmospheric conditions are poorly understood. We explored the use of particle image velocimetry (PIV) to gain a better mechanistic understanding of seed release by visualizing the flow velocities and vorticity in a two-dimensional slice of air around inflorescences. Pilot data taken in a wind tunnel show gradients in air velocity at the top of Carduus nutans capitula that may contribute to lift generation. Additionally, von Kármán vortex streets (vortices of opposite spin that are shed from the wake of an object) were observed shedding from capitula, which cause lateral forces on capitula and increase turbulence downwind at other locations. Avenues for further research include using PIV to examine the mechanisms of seed release and dispersal in wind tunnels and in the field. We found PIV to be a promising method to further explore the mechanisms behind seed release in wind dispersed plants, and a technique rich with opportunities for collaborations between plant dispersal ecologists and fluid dynamics specialists.

Original languageEnglish (US)
Pages (from-to)2485-2492
Number of pages8
JournalEcology
Volume91
Issue number8
DOIs
StatePublished - Aug 1 2010

Fingerprint

seed
seeds
wind tunnels
wind tunnel
vortex
Carduus nutans
air
fluid dynamics
ecologists
vorticity
flow velocity
particle image velocimetry
fluid mechanics
inflorescences
turbulence
methodology

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics

Cite this

Marchetto, Katherine M. ; Williams, Matthew B. ; Jongejans, Eelke ; Auhl, Richard ; Shea, Katriona. / Applications of particle image velocimetry for seed release studies. In: Ecology. 2010 ; Vol. 91, No. 8. pp. 2485-2492.
@article{5db3da2bf8aa43a8b70ed8dc3e067b3b,
title = "Applications of particle image velocimetry for seed release studies",
abstract = "Nonrandom seed release is an important determinant of how far seeds disperse, but the mechanisms that promote wind-related seed release under varying atmospheric conditions are poorly understood. We explored the use of particle image velocimetry (PIV) to gain a better mechanistic understanding of seed release by visualizing the flow velocities and vorticity in a two-dimensional slice of air around inflorescences. Pilot data taken in a wind tunnel show gradients in air velocity at the top of Carduus nutans capitula that may contribute to lift generation. Additionally, von K{\'a}rm{\'a}n vortex streets (vortices of opposite spin that are shed from the wake of an object) were observed shedding from capitula, which cause lateral forces on capitula and increase turbulence downwind at other locations. Avenues for further research include using PIV to examine the mechanisms of seed release and dispersal in wind tunnels and in the field. We found PIV to be a promising method to further explore the mechanisms behind seed release in wind dispersed plants, and a technique rich with opportunities for collaborations between plant dispersal ecologists and fluid dynamics specialists.",
author = "Marchetto, {Katherine M.} and Williams, {Matthew B.} and Eelke Jongejans and Richard Auhl and Katriona Shea",
year = "2010",
month = "8",
day = "1",
doi = "10.1890/09-0853.1",
language = "English (US)",
volume = "91",
pages = "2485--2492",
journal = "Ecology",
issn = "0012-9658",
publisher = "Ecological Society of America",
number = "8",

}

Marchetto, KM, Williams, MB, Jongejans, E, Auhl, R & Shea, K 2010, 'Applications of particle image velocimetry for seed release studies', Ecology, vol. 91, no. 8, pp. 2485-2492. https://doi.org/10.1890/09-0853.1

Applications of particle image velocimetry for seed release studies. / Marchetto, Katherine M.; Williams, Matthew B.; Jongejans, Eelke; Auhl, Richard; Shea, Katriona.

In: Ecology, Vol. 91, No. 8, 01.08.2010, p. 2485-2492.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Applications of particle image velocimetry for seed release studies

AU - Marchetto, Katherine M.

AU - Williams, Matthew B.

AU - Jongejans, Eelke

AU - Auhl, Richard

AU - Shea, Katriona

PY - 2010/8/1

Y1 - 2010/8/1

N2 - Nonrandom seed release is an important determinant of how far seeds disperse, but the mechanisms that promote wind-related seed release under varying atmospheric conditions are poorly understood. We explored the use of particle image velocimetry (PIV) to gain a better mechanistic understanding of seed release by visualizing the flow velocities and vorticity in a two-dimensional slice of air around inflorescences. Pilot data taken in a wind tunnel show gradients in air velocity at the top of Carduus nutans capitula that may contribute to lift generation. Additionally, von Kármán vortex streets (vortices of opposite spin that are shed from the wake of an object) were observed shedding from capitula, which cause lateral forces on capitula and increase turbulence downwind at other locations. Avenues for further research include using PIV to examine the mechanisms of seed release and dispersal in wind tunnels and in the field. We found PIV to be a promising method to further explore the mechanisms behind seed release in wind dispersed plants, and a technique rich with opportunities for collaborations between plant dispersal ecologists and fluid dynamics specialists.

AB - Nonrandom seed release is an important determinant of how far seeds disperse, but the mechanisms that promote wind-related seed release under varying atmospheric conditions are poorly understood. We explored the use of particle image velocimetry (PIV) to gain a better mechanistic understanding of seed release by visualizing the flow velocities and vorticity in a two-dimensional slice of air around inflorescences. Pilot data taken in a wind tunnel show gradients in air velocity at the top of Carduus nutans capitula that may contribute to lift generation. Additionally, von Kármán vortex streets (vortices of opposite spin that are shed from the wake of an object) were observed shedding from capitula, which cause lateral forces on capitula and increase turbulence downwind at other locations. Avenues for further research include using PIV to examine the mechanisms of seed release and dispersal in wind tunnels and in the field. We found PIV to be a promising method to further explore the mechanisms behind seed release in wind dispersed plants, and a technique rich with opportunities for collaborations between plant dispersal ecologists and fluid dynamics specialists.

UR - http://www.scopus.com/inward/record.url?scp=77955463533&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77955463533&partnerID=8YFLogxK

U2 - 10.1890/09-0853.1

DO - 10.1890/09-0853.1

M3 - Article

C2 - 20836470

AN - SCOPUS:77955463533

VL - 91

SP - 2485

EP - 2492

JO - Ecology

JF - Ecology

SN - 0012-9658

IS - 8

ER -