HALEAKALA VOLUNTEERS — The next Laulima o Haleakala drop-in work day is 9 a.m.-noon Dec. 17. Projects include nonnative species removal, weeding of planters, and trash pick-up. Meet at 9 a.m. at summit maintenance yard; bring long pants, closed-toe shoes, rain gear, sunscreen, hat, layered clothing, water and lunch. Contact Haleakala Volunteer Program office at (808) 572-4487 or HALE_VIP_Coordinator@nps.gov.

SOUTH POINT CLEANUP — Join the Hawai'i Wildlife Fund and NOAA in a marine debris cleanup Dec. 17 at South Point on the Big Island. Meet at 8 a.m. at Waiohinu Park for shuttles; bring hats, sturdy footwear, sunscreen and lunch; transportation, water, refreshments, toilets and gloves provided. Reserve a seat by calling (808) 756-1808.

KANE'OHE WETLAND PROJECT — Volunteers are needed Saturday to help the Sierra Club clear a wetland of mangrove to create habitat for endangered water birds at Marine Corps Base Hawai'i. Because the base is a secured facility, volunteers must provide name and Social Security number in advance and bring a signed waiver. Call Annette Kaohelauli'i at 235-5431.

FREE CHRISTMAS TREES — The annual Christmas Tree-Cutting Service Trip to remove pine trees and seedlings from Pu'u Nianiau at Haleakala will be Saturday. Children welcome; meet at 9 a.m. at the Pu'u Nianiau turnout below the park entrance. Bring gloves, warm clothing, sun and rain protection, and hand saws (no chain saws). Call (808) 572-9724.

CRATER OVERNIGHTER — The Friends of Haleakala National Park will conduct a two-night service trip this weekend at Kapalaoa, Saturday through Monday, to remove invasive plantago. Call (808) 876-1673.

ALA WAI CLEANUP — Join the Sierra Club in using scoopers and nets to collect debris from the Ala Wai Small Boat Harbor on Dec. 17. Meet at 8 a.m. at the harbor master's office. Bring sturdy shoes, hat, thick rubber gloves, sunscreen, water. Call Deborah Blair at 955-4168 or Sharon Moran at 277-2549.

WEED & POT CLUB — Maui Nui Botanical Garden's Weed & Pot Club meets 8:30 to 10:30 a.m. Wednesdays at 150 Kanaloa Ave. in Kahului to weed, rake, trim or transplant nursery plants, and perform other work. Tools, gloves and drinking water provided; bring sunscreen, wear shoes.

KANAHA WILDLIFE REFUGE — Weekly volunteer workdays at Maui's Kanaha Pond Wildlife Refuge, 7:30 a.m. Thursdays. Call (808) 572-6338.

MORNING TRAIL SWEEPERS — Lyon Arboretum in Manoa seeks early morning walkers to hike the arboretum trails, clearing fallen palm fronds and other debris from paths. Call volunteer coordinator Donna Schult at 988-0464. The arboretum also has volunteer work party days on the first, third and fourth Saturdays of each month.

Send listings to: For the Environment, P.O. Box 156, Wailuku, HI 96793; cwilson@honoluluadver tiser.com; or fax (808) 242-1520.