Native plant restoration project flourishing on Maunakea

The Center for Maunakea Stewardship’s plant restoration process starts with collecting seeds from established native plants in the area. There is now māmane and other native plants well established including ʻāweoweo, pawale, puakala and heʻupueo, a native grass.

Greg Chun
Greg Chun

Nearly two years after plant restoration efforts to replace māmane trees and enhance the subalpine ecosystem began, native plants are now flourishing around the perimeter of the Maunakea Visitor Information Station.

The Center for Maunakea Stewardship (CMS, formerly known as the Office of Maunakea Management) has successfully planted māmane and other native plants including ʻāweoweo, pawale, puakala and heʻupueo, a native grass, to enhance the native ecosystem at the visitor’s center located at the 9,000 foot elevation of the mauna.

“Ongoing work to revive and expand the population of native plants on the mauna is just one of the many areas of stewardship the University of Hawaiʻi is committed to fulfilling,” says Greg Chun, executive director of the Center for Maunakea Stewardship. “From caring for natural and cultural resources, telescope decommissioning and public access management, CMS is privileged to have the opportunity to enhance UH’s stewardship of Maunakea.

At least two māmane trees have been planted for every tree that was removed for the visitor center parking lot improvement project.

New plantings on edge of parking lot. Visitor Center in background.
Native plants are now growing strong on the edge of the new parking lot at the Maunakea Visitor Information Station. Courtesy photo.
Jessica Kirkpatrick
Jessica Kirkpatrick

Jessica Kirkpatrick, a natural resource specialist at the center, leads efforts to protect flora and fauna on Maunakea.

The restorative work is contributing to larger efforts on the mauna to provide habitat and resources for the palila, an endangered Hawaiian honeycreeper, and other native birds and arthropods unique to the subalpine ecosystem. The palila bird depends on māmane trees for survival and reproductive success and are currently restricted to a tiny patch of māmane habitat (~25 square miles) on the upper slopes of Maunakea.

More than 400 keiki (young) māmane trees can be observed around the visitor center where construction occurred to improve the parking lot. The nitrogen-fixing tree with yellow pea-shaped flowers is endemic to the main Hawaiian Islands and although it once thrived in forests from mauka to makai, it is currently limited to sub-alpine environments on Maunakea and Maunaloa on Hawaiʻi Island. More than 50 percent of the trees have sprouted up on their own as a result of natural regeneration and invasive weed management.

Seedlings in paper.
Māmane seedlings

“We hypothesize that māmane are naturally regenerating in the restoration area because we keep these areas free of invasive weeds which gives these plants a chance of survival without competing for resources,” Kirkpatrick explains.

“We also work to prevent the establishment of new invasive species on the mountain such as ants,” she says. “All ants are introduced to Hawaiʻi and when they become established in our native ecosystems, they can have detrimental impacts to ecosystem function and contribute to species extinction. Maunakea is the only place in the state that does not have ants, and keeping it that way allows these endemic plants and arthropods that are host specific to these plants to thrive.”

The Center for Maunakea Stewardship’s plant restoration process starts with collecting seeds from established native plants in the area. Some seeds, like māmane, need to be scarified and soaked before they are planted. Once plants are large enough they are outplanted into the natural environment and watered until they become established. It is critical to use soil exclusively from Maunakea to prevent the spread of invasive species.

Invasive weeds, such as fireweed, telegraph weed, pin clover and mullein are removed on a daily basis to give the native plants a chance to survive. Due to the COVID-19 pandemic, volunteer opportunities to help with restoration efforts were canceled. There has been no decision at this time on when volunteer groups can return.

Since 2012, more than 1,100 volunteers have filled close to 2,000 garbage bags with invasive weeds pulled from the Halepōhaku area. One of the goals of the restoration area is to have community volunteers and school groups help with the entire restoration process to provide educational opportunities and a pilina (relationship) with the management of Maunakea.

For two consecutive years, from 2016–17, the Kona-Kohala Chamber of Commerce bestowed the Pualu Award to the UH for its environmental awareness and cultural stewardship on Maunakea. The awards recognize UH’s innovative efforts to manage lands on Maunakea.

-via University of Hawai‘i News