Dead Wood Is Good Wood

A large diameter fallen tree along Upper Goldstream Trail in Goldstream Provincial Park. Over hundreds of
years the fallen Western red cedar will provide nutrients for the large Douglas fir behind it.

In the Pacific rainforest dead standing and fallen trees may make up more biomass than the living giants towering above the soil. If it weren't for these dead trees, and the decomposers that break them down, the forest would cease to exist.


According to renowned forester Chris Maser, ‘decaying wood serves as a savings account of soil organic materials and nutrients in forest ecosystems’. This is one reason landowners should not try to "clean up" forested areas. They need to be messy in order to function properly.


Sometimes messy old growth forests are deemed "decadent" to justify cutting them down. But you can't improve on the natural cycles of life and death.

Fallen large trees enhance fish habitat by providing shade and structure.
These downed trees are over the upper Goldstream River.

Dead wood is also a boon to forest wildlife.

In the words of forest scientist Charles Elton, "dying and dead wood provides one of the two or three greatest resources for animal species in a natural forest...if fallen timber and slightly decayed trees are removed the whole system is gravely impoverished of perhaps more than one fifth of its wildlife component".

The healthiest forest is an untouched forest, in all its messy, "decadent" glory.

Front Yard Flotsam

This large cedar that washed out of the Sooke River stayed hung up on a sandbar before salvagers came,
cut off the root end, and hauled the log away.

After having one of the driest fall seasons on record on south Vancouver Island, we recently experienced a record-breaking rainfall in a 24 hour period. When winter rainfalls coincide with seasonal high tides, the flotsam factor in my front yard increases dramatically.

It is exciting to see huge logs and whole trees float by during these winter freshets. Some of the debris is dislodged from area beaches by extra high tides, but much of the tree debris is sourced up the Sooke River which enters the harbour along Billing Spit's western shore.

Most of the tree debris gets washed out to sea, or gets hung up on a new beach somewhere. Some middle sized logs get hung up on sandbars in the harbour and stay until the next high tide or heavy rainfall.

Some of the larger logs stay around for years, perhaps decades. When these get stranded on a sandbar in the harbour they are heavily used by wildlife. Eagles perch and eat their prey on the large debris. River otters also love to play on the tree debris in the harbour.

This large Douglas fir log has been on the beach for a decade or more. Only the most extreme
tides and weather will move it off the beach.

Really big logs that get hung up on the sandbars will bring out the salvagers, or beachcombers as they are also called. Using giant chain saws, they remove the root ends of large trees, and use small boats to float the lucrative wood to where they can transfer it to land for milling.

Super-Sized Douglas-fir Snags Important Bird Habitat

One giant, old growth large diameter snag

Up the Sooke River in a not-so-secret location, lies one of the largest Douglas-fir snags I have seen, and is a tree I like to visit from time to time. A snag is a dead, standing tree, and the one above is a prime example of a large diameter, old growth snag.

This centuries old tree probably snapped in a windstorm - what is left could stay standing for another century or more. In that time it will provide habitat for a whole ecosystem of interacting organisms and food webs. Although the tree itself may be dead, the structure itself is rich with life.

Birds in the coastal forest depend on these Douglas-fir snags. Up to 34 different hole-nesting species of birds use Douglas-fir snags for roosting or nesting. Woodpeckers are especially dependent on snags as they use them for roosting, nesting, and for feeding. They eat the insects living in the dead wood.

A study conducted in the 1970s in the coastal Douglas-fir forest found that snags provide crucial habitat for hole-nesting birds:

"On the average, hole-nesting birds used Douglas-fir snags over 60 cm in dbh (diameter at breast height - 1.3 meters/4 ft above the ground) and over 15 m tall for foraging and nesting; these snags usually had broken tops, few or no branches, decayed sapwood and heartwood, and less than 100% bark cover. Snags of this size and type occurred primarily in forests over 110 years of age; consequently, use of snags by hole-nesting birds was concentrated in older forests (>110 years old).

Density and species diversity of hole-nesting birds increased with forest age. Density of hole-nesting birds was positively correlated with mean dbh of snags. Intensive management of Douglas-fir forests does not allow for the production or retention of large snags. A reduction in the number of large snags could reduce populations of hole-nesting birds."

No snags, no hole-nesting birds.

Upper Goldstream Trail Old Growth Trees

There are 17 provincial parks within 50 km of British Columbia's capital city, and shady, mossy Goldstream Park is one of them. It occupies the Goldstream River valley 16 km north-west from Victoria. Yet, once immersed in the forest, you are transported back to a time when monumental trees were common. Goldstream is one of the most accessible spots to get up close and personal with Vancouver Island's famous big trees.






Goldstream Park is one of the Capital Region District's most popular parks. Thousands of visitors a year come to see the fall salmon run, and the eagles that gather in the hundreds to prey on their spawned out carcasses.

Others come for the 700 year old trees, and a taste of the grandeur of an ancient forest.





Upper Goldstream Trail is in the campground side of the park, and passes through some of the biggest and oldest trees. This easy 30 minute hike parallels the Goldstream River, and is surrounded by a high density of old growth trees. Huge conifers such as Douglas-fir, Western red-cedar, and Hemlock dot the small valley. Broad-leafed trees such as Big leaf maple, Arbutus, and Black cottonwood are also represented in the park.





It was very hot the day I walked through the park approaching the Upper Goldstream trail head. The trail winds its way up the river valley alongside Goldstream River, which is criss-crossed by huge fallen trees. Large ferns cover the forest floor, and lichens drip from ancient branches. Sunlight penetrates the dark of the forest in brilliant shafts, nurturing the saplings that will eventually replace the old trees.






The temperature dropped several degrees after I entered the forest. All around the forest looked shaggy, drippy and green. Moss and lichen hung everywhere.



Some of these massive trees are 600 - 700 years old. It is an amazing feeling to be surrounded by these sky scraping monuments. The vertical scale is all out of whack.




What is it about these ancient entities that draws us to them? Somehow their stillness, strength, and defiance of temporal boundaries works its magic on us. We are humbled at the base of their wide, wrinkly trunks. We love them, admire them, and are astounded by them.



Increasingly we are able to recognize their irreplaceable importance, too. That someone in the past thought that this forest was worth protecting is a boon to all of us now. The old growth forests we save today will be appreciated and enjoyed by future generations.



Large diameter woody debris lay all around, and enormous standing snags provide feeding stations and bird condos 20 stories tall. In this forest all ages of trees are represented, from seedlings to seniors. It is here that we find the greatest diversity of life - it just does not compare with second growth tree plantations that are all one age of trees, and are sprayed with herbicide to make the fiber farms more 'productive' and profitable.


The Douglas-fir and Western red-cedar are the largest trees along the trail. Along with Hemlock, the hiker will find enough old trees to keep you looking up and astounded.







No proper Vancouver Island old growth trail would be complete without the 'walk through the fallen log' feature, and the Upper Goldstream trail does not disappoint.







Eventually the trail leads to Goldstream River Falls. Cool, fresh water rushes and tumbles down the steep valley. Florescent green moss covers everything, and ferns luxuriate in the wet, humid micro-climate. It is this clean, cold water that keeps the salmon run going after thousands of years.







Upper Goldstream Trail is the most accessible old growth forest closest to Victoria. While in this forest you get the illusion that you are in an ecologically intact area - an area where nature and the forest rule. Alas, though, Goldstream Park is surrounded by development and encroachment continues unabated. This valley is unfortunately much smaller than it initially feels.





Although I didn't see anyone the day I hiked, this trail is heavily used. The forest floor has been trampled by visitors that know not the importance of staying on the designated path. However, it remains an impressive remnant of old forest and gives the visitor a good idea of what it must have been like on the south island before 98% of the Coastal Douglas-fir zone was razed in massive clear cuts.

Need a retreat from the city? Goldstream Provincial Park is a good place to get away from it all, just minutes from downtown. If you squint a bit, and pretend there aren't houses just up over there, you can get lost for a while in this lush, green place.

Getting There

Goldstream Provincial Park is located about 16km from Victoria. To get to the Upper Goldstream Trail head follow Highway 1 (Trans Canada Hwy.) north. Take the Westshore Parkway turnoff to Amy Road, then Sooke Lake Road to Golden Gate Road, which descends into the campground section of the park. There is only pay parking in the park so I park at the top across the street from the pub and walk in.

The entrance to the day use area is further along Highway 1, then turn right at Finlayson Arm Road. There are nice Western red-cedar here, as well as huge Black cottonwoods along the Goldstream River. Note: The access to the park's day use area is along busy Highway 1. Exercise extreme caution when entering and leaving this busy area.

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Powerful Winds Cause Damage On Vancouver Island

The biggest storm of 2010 blew through the south island April 2nd leaving havoc in its wake. Damage was extensive in Mill Bay with large waves stranding boats, docks, and logs high up on the beach. Lighter damage was widespread and 90 000 people were without power for up to 24 hours or more. See video here.



Winds in the upper reaches of the Beaufort Scale really howl out here where the sea squalls slam right into the rocks and trees. Weather watchers were saying that the April 2nd storm caused the worst damage the south island has seen since the storm of December 2006.



Wind is natures arborist and the recent 90km/hr winds gave the south coast trees and forests a trimming. Many trees were toppled, including some in urban areas that fell on buildings, power lines and roadways.



Many other trees were trimmed by the gusts, and as usual after every big storm, roads running beside forested areas were completely covered with smaller debris.



The December 2006 storm was much more powerful with winds topping 150km/hr in places. Thousands of trees were blown down including many across roads, highways and trails. Extensive recovery work had to be done in order to open local beaches and the Juan de Fuca and West Coast trails.





Hundreds of thousands of homes along the Pacific coast were without power. Those in remote places were off-grid for up to a week or more. A building on the waterfront in Sooke took the full brunt of the west winds coming off the harbour and part of the roof was lifted off and deposited in the parking lot. Vinyl siding was strewn around the neighbourhood and hung from trees.


Across the south island and on the mainland trees crashed into homes and crushed cars. As much as I love big trees, there are hazards associated with big trees in urban areas. Trees in the coastal forest are not deeply rooted - they tend to have root pancakes rather than root balls since most have no tap root. A once in 50 year storm therefore can have a huge impact on trees and forests.





Trees that are toppled, roots and all are called blow down. Blow down areas can be like mini clear cuts with all the trees left behind in a jumbled mass. Trees that break off up the trunk are called wind snap. In urban areas such trees are removed. In Sooke after the 2006 storm, the public came out en masse and fired up the big chain saws to tackle the decades old trees blocking roads and driveways.






Out in the forest, though, the trimming and falling of trees by the wind is a re-occurring, natural event that passes with no fanfare. This ecosystem is ever-changing, and downed trees and standing wind snapped trunks simply add to the richness and diversity in a constantly cycling self-sustaining system.

Impressive Douglas Fir Snag

This is actually a huge, short snag that is broken off just up from the top of the photo. The massive bole lies down the slope to the right, and is now large diameter woody debris enriching the forest floor structure. This ancient Douglas fir probably experienced a catastrophic event during a winter storm. Perhaps it was diseased which would make it more susceptible to wind.

This impressive snag is in a very narrow strip of old forest that has been cleared on either side, which made it vulnerable to wind. Other large trees in this area are likely to blow down, too. The fire scars on the foot thick cork-like bark above my head are pretty impressive. The burns record at least one forest fire.

In the recent past the Sooke area was carpeted in trees this large and larger.

When A Tree Falls In The Forest...It Becomes Large Diameter Woody Debris

When I taught grade six science my favorite unit to teach was Trees and Forests which was all about the importance of forest eco-systems. While discussing old growth forests I had to teach my students about major characteristics of these ancient places, such as Large Diameter Woody Debris. Even though this term never failed to elicit giggles and snickers from students, they soon came to see how it holds great importance for the forest environment.

I often scour the forested hills surrounding my home for large diameter woody debris. LDWD is a tell-tale sign of an older, undisturbed forest. These large trees can be standing dead trees (snags), or fallen dead trees, or healthy trees downed by windthrow. They provide irreplaceable habitat for a host of forest life. On one recent trip I followed the Galloping Goose trail into the Sooke Hills Wilderness.

Just before Sooke the western section of the Galloping Goose trail turns north and heads into the Sooke River watershed . The trail traverses a 1918-built CNR rail line that once saw wood-powered Shay locomotives hauling massive trees out of the pristine forest. Now it provides access for people recreating, including those seeking out big tree wilderness.



The trail's western terminus, about 12km from where it leaves the coastal plain below, is 14 hectare Kapoor Park Reserve. This undeveloped park contains the remains of Leechtown, a 20th century gold rush and lumber town. Anything that remains has been reclaimed by the ceaseless growth of the forest, not to mention the invasive Scotch Broom. The Galloping Goose trail ends here, but the old line pushed north through the forested hills to Cowichan Lake.


Along this section of the trail there is a high frequency of scattered Douglas fir veterans that soar over 45 m/150 ft and are hundreds of years old. The tops of these trees emerge from the smaller forest around them, and announce their presence. Douglas fir typically live about 750 years with documented cases of well over one thousand years old.


The old tree's trunks stand out from the background of toothpicks of 2nd or 3rd-growth trees. Often the trunks show evidence of fire across the deeply furrowed, fire-resistant bark. Before fire suppression started, wildfires occurred on a regular basis. Such fires kept down smaller trees and underbrush, leaving an open forest dominated by 122 m/400 ft ancients.


Every winter storms slam into this region, and their power and fury is recorded in old tree's twisted limbs and broken tops. Occasionally storms topple trees and the big ones come down with a crash... if there is someone in the forest to hear it, that is. Sometimes they are uprooted (windthrow or blowdown), and sometimes trees snap off up the trunk (windsnap).

Imagine standing next to one of these 10 story tall trees while it is oscillating back and forth during a gale-force wind. Soon you hear wood snapping and cracking, then during a strong gust, the dangerously leaning tree keeps on going until it crashes to the ground at your feet. You hear it. You feel it, too. This tree, perhaps 400 years old, has just become large diameter woody debris, a very important part of this ecosystem.



Standing veteran trees are ecosystems unto themselves over the hundreds of years they live and provide habitat for a variety of plants and animals. From the mosses and lichens growing on their bark to the marbled murrelet in its branches or the heartwood decaying fungus slowly hollowing out the inside of the trunk, such a tree harbours a complex self-sustaining system. When such trees die and/or fall to earth the micro-hoards of decomposing creatures begin the relentless process of recycling these giant columns of biomass back into the system.


Many species of birds, mammals, amphibians, and reptiles use LDWD for a variety of purposes. Birds such as the Pileated woodpecker (the largest type of woodpecker, used as a model for Woody Woodpecker), visit downed Douglas firs to hunt for carpenter ants or excavate cavities to live in. Unlike headbangers, Pileated woodpeckers have a cushion built into their brain to reduce the damage from all that beak slamming into solid wood. Ancient snags are hollowed out as nesting sites, and after primary cavity nesters move out owls, other birds and small mammals move in. The shedding wrinkly bark also gives shelter to bats.


Black bears, martens, fishers and bobcats all use suitable downed LDWD for denning sites. Sharp-tailed snakes, endangered in B.C., are residents of the vanishing coastal Douglas fir forest and live in and around downed trees. A salamander can live its whole moist life in a single log; everything it needs is there.

Over decades, as the log melts into the forest floor, new trees take advantage of the rich nutrients it provides. One day one of these small trees may fill the hole left by its fallen ancestor. The same ancestor that nursed the young tree to its youth.

The whistle of the logging locomotives is not heard any longer in these parts, but veteran trees continue to fall. From the old rail bed I can see where recent clear cut logging has taken out some of the remaining 1% of original low elevation Douglas fir forest on Vancouver Island.

Such clear cuts raze the forest right down to the ground. Extra woody debris (and there is often a lot of it) is burnt in large piles, or is salvaged by outfits further down the chain, much like the vultures that pick on the remains of dead animals. But as vultures prefer the carcasses of herbivores, the same with post-clear cut salvage outfits. They prefer the high value cedar more than anything else.

Large diameter woody debris may be funny, but it is of supreme importance to the things that live in and around it, including humans. You can educate your family and friends AND provide humour at the same time - just mention LDWD.