acoustic monitoring detection part - i advanced lec 06 wildlife techniques university of rio grande...
TRANSCRIPT
Acoustic Monitoring Detection Part - I
ADVANCED LEC
06WILDLIFE TECHNIQUES
University of Rio Grande Donald P. Althoff, Ph.D.
Why Acoustic Monitoring?
• Some species are _______________—and therefore difficult to detect when active
• Some species reside in _________________—and therefore difficult to detect
• 24/7 (or 12/7…6/7) is not feasible with just “human” observation—therefore _________________________ to “detect” with high degree of precision and accuracy offers a reasonable alternative
• _________________!!!!!
What Improvements in Last 5-10 Years Relative to Acoustic Monitoring Equipment?
• Equipment becoming more ______________ (aka weather-resistant)
• Higher capacity _____________ (think memory cards...from 516K a decade ago to 16-32 gigs+ now)
• Advances in programmability for ______________ monitoring over a 24-hour cycle, 7-day week, etc.
• Advances in ________________…for data processing and species ID
What Species to Acoustic Monitor/Study?
• Bats--most obvious
• Birds
• Mammals
• Frogs/Toads
What Are Some Major Challenges Remaining?
• _______________ Species ID (think bats)
• Matching calls with __________________________ (think bats, birds, and mammals)…what do the vocalizations mean?
• _________ of field units
• __________________ required to process/verify massive data files generated
Basics: How Individual Can We Get?
• Bats
• Birds
• Mammals
• Anurans
As of today…..____ individual animal ID
As of today….._________ individual males based on song quality
As of today…..____ individual animal ID
As of today…..____ individual animal ID
Birds: Individual Variation Adelaide’s Warblers(Puerto Rico)
See handout
Stuff to chase….
• https://www.aba.org/birding/v41n3p18w1.html individual variation in a bird’s song…something we can investigate with acoustic recordings: slowdown, visualize, analyze
• Etc.
Not all Acoustic Monitoring is Ultrasonic (see “range” next slide)
• _______ - yes
• Most others (frogs, flying squirrels, birds, etc.) are in ranges we (or most humans) can detect without aid of “special” equipment. These are usually stored as “______” files that do not require special software to listen to.
• Regardless of file type, __________ does require special software
Sound Basics
INFRA SOUND Human ULTRA SOUND
Over 20 kHz2 - 20 kHz
Key Points : “Some” SUMMARY COMMENTS
• We are just scratching the surface on use of acoustic monitoring in WILDLIFE studies and/or monitoring
• Has ________________ if we can a) figure out what we are recording and/or listening tob) for species ID (think bats mostly), recognize limitations of auto ID software (we’ll explore this more)c) have trained (or willing to learn) biologists/technicians to use analysis softwared) can continue to see cost reductions in equipment cost
(we’ll explore this more)• Major advantage: _________________