TCBES MS Thesis Defense via Zoom - Keith Burnett - Event Details

This event has concluded and is no longer current.

This event is being held online. Password: 407171

TCBES MS Thesis Defense via Zoom - Keith Burnett

Location: Online

TCBES Master's Thesis Defense via Zoom - Keith Burnett
Tuesday, April 14, 2020, 3:00 PM
Location: Online Only

Join Zoom Meeting: zoom.us/j/4775369452
Password: 407171

Title: Distribution, abundance, and acoustic characteristics of Kohala forest birds

Abstract: Kohala, the northernmost volcano out of the five that comprise Hawai’i Island, is home to the most spatially isolated population of Hawaiian forest birds on the island. The avian community on Kohala is one of the few native bird populations in the state that has not been monitored since the landmark Hawai’i Forest Bird Survey (HFBS) in 1979. Here, I examine changes in the distribution and abundance of forest birds on Kohala since 1979. I surveyed 143 stations across 13 transects in Pu’u ‘O ‘Umi Natural Area Reserve in Kohala from March through May 2017 and incorporated the 1979 HFBS data from 80 stations across 3 transects that occurred in our study site. I detected 2806 individuals of 15 different species across the 143 survey stations and observed changes in species densities ranging from -8.4% (C. sandwichensis) to +714% (D. coccinea). While equivalence testing showed meaningful increases in population densities for all but one species, changes in survey protocol standards may have limited our ability to make direct comparisons with the HFBS. I also document here the introduction and establishment of C. diphone in Kohala.

Populations that are isolated have a high potential to diverge acoustically. As forest birds use song primarily to defend territory and attract mates, major changes in the acoustic properties of song can reinforce reproductive isolation, leading to assortative mating and speciation. While some native species like the Hawai’i ‘amakihi have demonstrated an evolved tolerance to avian malaria and begun to repopulate low-elevation habitats and reconnect populations, it is unclear the level to which song divergence has already reinforced reproductive isolation. To address this question, I also examined how long-term isolation has affected the song diversity and acoustic traits of the Kohala population of the Hawai’i ‘amakihi compared to the geographically-nearest four populations. I recorded and analyzed 7,183 ‘amakihi songs across all five populations from 2013 to 2017, with a total of 57 unique song types. I found significant variability in song types among all five populations and relatively uniform variation within populations. Principal component analysis of temporal and frequency measurements revealed that the Kohala population is unique in its acoustic characteristics. Future behavioral assays can indicate whether this uniqueness has reinforced reproductive isolation in Kohala ‘amakihi over larger time scales.

For more information, contact: uhhtcbes@hawaii.edu 8089327573

Tags: keith burnett tcbes research forest birds pat hart patrick hart kohala Online Only

What's also happening?

Announcements

Student Activities Council (SAC) Open Positions - Apply Now!
SAC Applications are open. The Student Activities Council (SAC) provides programs, activities and services which serve the co-curricular cultural, social, recreational and educational interests of students of the University of Hawaiʻi at Hilo. ...
Student Activities Council (SAC) ID Validation Reminder
Aloha Vulcans, Hope you are all ready for this upcoming Fall semester. Best of luck to all students both returning and freshmen from all of SAC. ...
BOSP Positions Open!
If you enjoy writing, editing or leadership join BOSP! The Board of Student Publications has positions open in Hohonu, Kanilehua, Ke Kalahea and the Board! Applications are available on our website under Forms. ...
Menstrual Equity Survey
We want to hear from you! The Women's Center and UHHSA are collaborating on a menstrual equity initiative that could bring a free supply of period products on campus. Fill out out the menstrual equity survey using this link: ...
Diaper Bank Flyer
Do you want to donate diapers for our locals and keiki? Come by the new Hawai`i Diaper Bank drop off location with your diaper donation!
AANAPISI Scholarship
UH Hilo undergraduate students of Native Hawaiian, Pacific Islander, and Asian American backgrounds who are U.S. ...
APIA Scholarship
UH Hilo undergraduate students of Native Hawaiian, Pacific Islander, and Asian American backgrounds who are U.S. ...
2022-23 UH Common Scholarship Application Available Oct 1st
Starting October 1, 2021, students can complete the 2022-23 UH System Common Scholarship Application online at www.hawaii.edu/tuition/scholarships/how-to-apply/. ...
RISO Registration for 2021-2022 is now open
The 2021-2022 academic year UH Hilo Registered Independent Student Organization (RISO) registration period is now open. The final day to register is March 25, 2022, at 4:30 pm. ...
2022-23 FAFSA Available October 1st
Starting October 1, 2021, students can complete their 2022-23 Free Application for Federal Student Aid (FAFSA) online at Studentaid.gov/fafsa To receive priority consideration at UH Hilo, complete your FAFSA by February 1, 2022. ...
Cultivating Pilina: Empowering Connection to End DV
Aloha! Please join us every Friday for the month of October to engage in courageous conversations around Domestic Violence, as we work collectively to keep our communities safe. ...

Disclaimer: The University of Hawaii at Hilo is not responsible for the contents, links and/or materials presented in any web site listed above that is not of the “hilo.hawaii.edu” or “.uhh.hawaii.edu” domains. All comments, complaints and grievances should be filed with the author, host and/or owner of said site.