Bioacoustics, A Brisk Wind and Spanish Moss, Tillandsia usneoides

Tillandsia usneoides is also known as Spanish Moss and is found frequently here across Florida and the South.

I placed a stereo set of Piezo microphones inside the moss during a brisk (4 or 5 m/s) wind to record vibrations of the moss rustling in the wind.

The friction or rubbing noises may be from vibrations created by the Spanish moss rubbing against the tree branches in the wind.

Seemingly, the wind audio also creates a doppler effect that the piezo mic picks up.

Language of Nature & Humans Intertwined. Wind, Rain and Wind Chimes.

Here is a recording of the wind and rain in front of an approaching storm with the wind playing against a set of hanging wind chimes.  Sony PMC M10, Clippy 272 mics and windbubbles.

Florida Nature Haiku, Senryu, Perdido Key

Florida nature senryu for Tuesday, Perdido Key Beach and Life Paths,

Perdido Key, Kevin Songer

...
sometimes backward path
is our path forward, yet wind
and waves erase both
...

Florida Green Roofs and Wind Impacts on Green Roof Plants

Wind is an oft-neglected but so important design parameter of green roof layout.

Dry, desiccating winds can damage or kill green roof plants faster then drought or a host of other environmental factors.

Included here are two photos of the same black-eye pea plants.  One is on a wind protected green roof, the other is on a wind exposed green roof.  Note the wind burn on the wind exposed roof plants.

Both looked the same prior to the 48 hour wind storm just leaving.

MetroVerde  recorded between 10 and 20 Km/Hr winds on a continual basis for the 48 hours with almost non-existent water vapor or air humidity.

Florida Green Roof, Wind Protected Green Roof Plants

Florida Green Roof, Wind Exposed Green Roof Plants

Wind can burn or kill green roof plants quickly, taking an otherwise beautiful planting and turning into a brown mess within a matter of days.  Even with more than adequate irrigation water applied - simply because the vascular system of the plants cannot keep up with the demand for water in the leaves.

CAM plants and those plants with stomata remaining closed or closing under lack of water conditions must be used as perimeter wind break plants on green roofs with out parapets or other wind protection if the green roof is not otherwise sheltered.

Understand the different types of photosynthesis green roof plants have.  For a primer, check out the many articles we have posted before on CAM, C4 and C3 plants.

Other helpful sites are included here;

Great Irish Gardening blog article on wind damage in Ireland to garden plants.

North Carolina State University has another brief yet informative note on wind desiccation of plants.

Very interesting and informative Permaculture Wind Break Site.

Remember, your green roof site may receive plenty or precipitation or irrigation water, but if it is constantly exposed to desiccating winds the plants will experience the effects of wind damage.