Current Research

 

Rapid ʻŌhiʻa Death (ROD)

SDAV is currently monitoring the spread of Ceratocystis fimbriata, also known as Rapid ʻŌhiʻa Death (ROD), a newly identified strain of fungus that is killing native ʻŌhiʻa trees (Metrosideros polymorpha). We are collecting repeat high-resolution videos/imagery from sUAS platforms to assess progression rates and spatial patterns of tree mortality associated with ROD. Future work with hyperspectral remote sensing may allow us to identify infected trees before symptoms become visible. For more information on ROD, please visit: http://www2.ctahr.hawaii.edu/forestry/disease/ohia_wilt.html
Spatial Data Analysis and Visualization Labs

University of Hawaiʻi at Hilo

Miconia

We are researching the effectiveness of using sUAS platforms in the fight against non-native weeds, including miconia (Miconia calvescens). Miconia is an invasive noxious weed found throughout the main Hawaiian Islands that shades out native plant species and quickly takes over a forest to create an invasive monotypic forest.

Maunakea Summit Erosion  

Maunakea is a dormant shield volcano that reaches 4,205 meters on the island of Hawaiʻi that is undergoing both natural and anthropogenic erosion. SDAV created a baseline high-resolution topographic dataset of the summit area and is using repeat terrestrial LiDAR and sUAS imagery to quantify and monitor erosion rates to better aid mangement practices.

Shoreline Change

Hawaiʻi Island’s coastal resources are vulnerable to the combined impacts of erosion, subsidence, and sea level rise. We are using remote sensing techniques to quantify historic and contemporary shoreline change rates at Kapoho (a subsiding lava field), Hāpuna (A white sandy beach), and Honoliʻi (a sea cliff). Results from this study will be used to support the County of Hawaiʻi’s efforts to produce a scientifically relevant shoreline setback policy. For more information, please visit: https://hilo.hawaii.edu/picsc/Project-4_hart.php
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Click on the picture to view ROD video!
Click on the picture to view Maunakea video!
Outplant Growth at Keaukaha Military Reservation   Native lowland wet forests in Hawaiʻi are disappearing due to aggressive invasive species dominating the forest. SDAV assisted Dr. Rebecca Ostertag (UH Hilo Biology) by developing bare earth digital elevation models and approximating surface roughness to characterize terrain as it relates to outplant growth in experimental plots. This information will be compared to the 'liko nā pilina' database to determine if ʻaʻā lava field roughness effects outplant growth.

2018 Volcanic Eruption Response

SDAV is partnering with Hawaii County Civil Defense, USGS and other agencies to monitor and track the ongoing eruption from Kilauea volcano that began on May 3, 2018. Using sUAS platforms with cameras that capture imagery in the visible and infrared wavelengths, SDAV has been monitoring lava flows day and night to provide accurate updates for emergency planners. We would like to thank the following organizations and people for their assistance in this endeavor:
Justin Adams, Harrison Andina, Jason Dzurisin, Laura Hart, Einat Lev, Matt Lucas, Michelle Mazzetti, Jon McBride, David Merrick, Robin Murphy, Tracey Niimi, Brennan O’Neil, Jason Ozboldt, Jonathan Price, Roberto Rodriguez, Victor Rasgado, Nathan Stephenson, Michelle Shuey, Nick Turner, Miki Warren, Mark Wasser

Biological Soil Crusts and Erosion  

Biological soil crusts, also known as biocrusts, are complex assemblages of photosynthetic microorganisms that inhabit the top layers of soil. These communities play important roles in ecosystem functioning and soil stability, especially in arid climates. We are developing a method to map biocrusts from high-resolution sUAS imagery in the Kawaihae watershed on Hawaii Island. This new tool will help us to identify areas of high erosion risk with more precision, and allow us to provide highly- detailed spatial data to conservation organizations working in this watershed.
Click on the picture to view ROD video!
Current Research

 

© Lorem Ipsum Dolor

Rapid ‘Ohi’a Death(ROD)

Rapid ʻŌhiʻa Death, a newly discovered disease, is quickly infecting and killing endemic ʻōhiʻa trees on the island of Hawai`i. SDAV is working to understand if short, repeat interval high spatial resolution (~5cm) mapping of ROD- affected areas provide any valuable insights into its’ spread or control. We have been gathering high resolution images and video over a 450 acre study site since February, 2016. For more information on ROD, please visit: http://www2.ctahr.hawaii.edu/forestry/disease/ohia_wilt.ht ml