Question

Read the following transcript excerpt from an academic oral presentation delivered at a conservation biology symposium:

"Good morning, colleagues. Today, I present our findings on passive acoustic bio-monitoring in the Chocó Andino Biosphere Reserve in northwestern Ecuador. Over an eighteen-month study, our team deployed forty-eight autonomous recording units across three distinct forest strata: primary forest interior, fragmented secondary regrowth, and agroforestry corridors.

The acoustic sensors operated on a programmed schedule of five minutes of continuous audio recording every half hour, capturing soundscapes across an ultrasonic bandwidth between 1 kilohertz and 48 kilohertz. Through automated convolutional neural network processing, we cataloged over one hundred and twenty distinct avian species and twenty-two anuran species. Crucially, our spectral analysis revealed that primary forest plots maintained an Acoustic Complexity Index of 0.82 during the dawn chorus, whereas secondary growth corridors achieved an index of only 0.54. Furthermore, nocturnal ultrasonic recordings demonstrated that insectivorous bat activity peaked at a frequency band of 38 kilohertz, with vocalization rates dropping by sixty-five percent in edge habitats located within one hundred meters of agricultural clearings. These empirical acoustic metrics directly confirm that structural canopy connectivity is vital for sustaining faunal communication channels."

Based on the specific supporting details and numerical data stated in the presentation, match each research parameter on the left with its corresponding factual finding on the right.