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- W1998434080 abstract "The giant reed ( Arundo donax ) is well known as a species that can withstand high wind loads without mechanical damage. To examine wind impact, profiles of vertical wind speeds in the plant's natural habitat (southern France) were measured at the edge and within a stand in the main wind direction. Wind speed was recorded simultaneously at five heights. For 75 measurements of within‐canopy wind speed profiles, the attenuation coefficient was 4.4 ± 0.5, a value typical for plant stands with very dense canopies. Video recordings proved that A. donax becomes streamlined with increasing wind speed, reducing the projected surface area of leaves and stem. The total projected surface area is a function of wind speed and can be characterized by a second‐order polynomial regression curve. For small wind velocities up to 1 m/s, the calculated drag force is proportional to the square of the wind speed. However, when A. donax plants are subjected to higher wind speeds (1.5–10 m/s), the drag force becomes directly proportional to the wind speed. Streamlining is a potentially important adaptation for withstanding high wind loads, especially for individual plants and plants at the edge of stands, whereas in dense stands streamlining probably plays a minor role." @default.
- W1998434080 created "2016-06-24" @default.
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- W1998434080 date "2003-08-01" @default.
- W1998434080 modified "2023-10-18" @default.
- W1998434080 title "Field measurements of wind speed and reconfiguration in Arundo donax (Poaceae) with estimates of drag forces" @default.
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- W1998434080 doi "https://doi.org/10.3732/ajb.90.8.1253" @default.
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