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2017 ; 7
(17
): 6884-6893
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Herbivores alter plant-wind interactions by acting as a point mass on leaves and
by removing leaf tissue
#MMPMID28904768
Kothari AR
; Burnett NP
Ecol Evol
2017[Sep]; 7
(17
): 6884-6893
PMID28904768
show ga
In nature, plants regularly interact with herbivores and with wind. Herbivores
can wound and alter the structure of plants, whereas wind can exert aerodynamic
forces that cause the plants to flutter or sway. While herbivory has many
negative consequences for plants, fluttering in wind can be beneficial for plants
by facilitating gas exchange and loss of excess heat. Little is known about how
herbivores affect plant motion in wind. We tested how the mass of an herbivore
resting on a broad leaf of the tulip tree Liriodendron tulipifera, and the damage
caused by herbivores, affected the motion of the leaf in wind. For this, we
placed mimics of herbivores on the leaves, varying each herbivore's mass or
position, and used high-speed video to measure how the herbivore mimics affected
leaf movement and reconfiguration at two wind speeds inside a laboratory wind
tunnel. In a similar setup, we tested how naturally occurring herbivore damage on
the leaves affected leaf movement and reconfiguration. We found that the mass of
an herbivore resting on a leaf can change that leaf's orientation relative to the
wind and interfere with the ability of the leaf to reconfigure into a smaller,
more streamlined shape. A large herbivore load slowed the leaf's fluttering
frequency, while naturally occurring damage from herbivores increased the leaf's
fluttering frequency. We conclude that herbivores can alter the physical
interactions between wind and plants by two methods: (1) acting as a point mass
on the plant while it is feeding and (2) removing tissue from the plant. Altering
a plant's interaction with wind can have physical and physiological consequences
for the plant. Thus, future studies of plants in nature should consider the
effect of herbivory on plant-wind interactions, and vice versa.