Category: Pinus albicaulis

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Five-Needle Pines Community Science Project

As a board member of the Whitebark Pine Ecosystem Foundation, I decided to help cook up this project because all is not well with the five-needle pines of western North America.

Five-needle pines along the Pacific Crest Trail include the sugar pine, limber pine, foxtail pine, whitebark pine, and western white pine. Crucial to the mountain ecosystems where they occur, these trees face an uncertain future, and scientists are trying to learn more.

You can help and are invited

Whitebark Pine Ecosystem Foundation has partnered with the California Native Plant Society and the Pacific Crest Trail Association to raise awareness about the plight of five-needle pines and conduct this community science project. The goal is to get thru-, section-hikers, and everyone who visits to the trail to map and inventory five-needle pines along the Pacific Crest Trail.

By participating, you will help increase awareness of the changes affecting our world while improving connections to nature. Working together to document what’s happening is a positive step toward recovery.

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Klamath Mountain Whitebark Pine

In the Klamath Mountains, as in the remainder of its range in North America, whitebark pine (Pinus albicaulis) is a true summit tree that survive in only the highest subalpine conditions. Regionally, they define the extreme limits of the timber line (7,000’- 9,000’) on localized mountain tops, or sky islands, where they consummate an aesthetic splendor that rivals the finest subalpine scenery of the West. Scraggly branches splay about in the windward direction—where often just as many are dead as alive. Trees are scrupulously scattered across the landscape and thus sculpted specifically by the meager conditions offered. Centuries of slow growth are in strict compliance with the rigorous demands of sun, soil, water, and wind. On select summits a deep-time aptitude for life is exhibited through a multitude of charismatic individual forms.

Klamath Mountain Whitebark Pine
Whitebark pine groves across the eastern Klamath Mountains — the only place they grow in the range.
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Klamath National Forest Whitebark Pine

Mapping and monitoring Pinus albicaulis

For the better part of July I was contracted by the Forest Service Region 5, in a partnership with the CNPS Vegetation Program, to follow up with our 2013 work mapping and monitoring whitebark pine in the north state. I visited numerous sites where I predicted Pinus albicaulis might occur to conduct surveys and improve our state-wide range map for the species. Overall, the health of the species in northern California is in slow decline due to a variety of factors including mountain pine beetle, white pine blister rust, global climate change, and recent high intensity fires. In an earlier post, I shared some highlights from the Modoc National Forest, this post shares  images and highlights from Klamath National Forest whitebark pine work.

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Warner Mountains — whitebark pines and beyond

Warner Mountains
Conifers of the Warner Mountains. Maps from Conifers of the Pacific Slope.

The Warner Mountains are a north-south trending fault block range in the northeastern corner of California, extending northward into Oregon. The length of the range is approximately 90 miles, with the northern California portion bounded by Goose Lake on the west and Surprise Valley on the east. In California, elevations range between 5,000-9,897 feet (on Eagle Peak). In the High Grade district, which is the extreme northern limits of the Warners in California, the range has a fairly even crest of 7500 feet, reaching an elevation of 8290 feet on Mount Bidwell. This is the area where I spent four days mapping and monitoring whitebark pine (Pinus albicaulis) for the US Forest Service.

The geology of the region is complex and compelled me to understand it better. Bedrock consists of sedimentary rocks of the Oligocene overlain by rhyolitic to basaltic volcanic rocks of the Miocene. The basal andesite is overlain by rhyolite and glassy rhyolite, which are in turn overlain by basalt flows. There are valuable minerals and gems found in this area that have justified a long-standing history of mining. Gold was the first and major extracted mineral soon followed by opals, petrified wood, and even obsidian. The range is a complex assemblage of interesting rocks for sure which help sculpt the regional ecology.

The northern Warner Mountains have a long history of mining.

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