wildlife Archives - TreeTopics

Brad Withrow-Robinson, OSU Forestry & Natural Resources Extension agent, Benton, Linn and Polk Counties

Earlier in this series (click here), we talked about some of the reasons people are interested in growing a diverse forest, some of the key components of diversity, and also some of the many ways to enhance your woods’ diversity. The idea was to show that a landowner often has a very wide range of future options, but often needs to make choices and take actions to achieve their goals. I know this may have seemed academic to some readers, so we will share some examples of how this looks in practice.

A meadow creates open areas where sun loving plants such as oak thrive and also forest edges that are attractive to certain wildlife.

A good example of managing for diversity to meet some specific wildlife and timber objectives is Cedar Spring tree farm near Airlie, owned by Dave Hibbs, Sarah Karr and their family.

Sarah is an avid birder, determined that any property they own provide benefits for wildlife as well as for her family. Dave is a retired OSU forestry professor interested in producing future high quality timber along with other benefits from their woods. So, Dave and Sarah are typical of many families, with co-owners having some different objectives and priorities. But they have a willingness and ability to manage for multiple objectives that can be met by growing a diverse forest. So let’s take a look at some of the ways they do this.

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By Amy Grotta and Brad Withrow-Robinson, OSU Forestry & Natural Resources Extension

Through a creative and carefully planned harvest, this mature forest has undergone a structural diversity makeover.

Continuing our series, we’ll now look at steps that woodland owners can take to enhance structural diversity in their forests. Recall that “structural diversity” refers to the amount of three-dimensional variation in the forest. In other words, a structurally diverse forest has trees of different sizes arranged in uneven patterns across the site.

Why do we care about structural diversity? Structural diversity is important to creating an “older” or “natural” forest look that many people want on their property.

Structural diversity is also a very important part of wildlife habitat. Continue reading →

By Amy Grotta and Brad Withrow-Robinson, OSU Forestry & Natural Resources Extension

Our previous installment of this series introduced the key elements of forest diversity. Species diversity (a.k.a. compositional or biological diversity) is one of those elements. So how do you achieve it, especially if what you are starting out with is a plantation forest with only a few species? The transition to an older forest with many plant species will not happen quickly. However, at every stage in a forest’s life cycle, there are opportunities and choices one can make to move the needle to a more species-rich forest.

The rest of this article and the accompanying infographic takes us through these choices, stage by stage. Continue reading →

Brad Withrow-Robinson and Amy Grotta, OSU Forestry & Natural Resources Extension.

Many landowners are interested in growing a diverse forest as discussed in the previous post. Their reasons may include having an attractive woodland retreat, providing habitat for wildlife or having a more resilient forest. Whatever the reason, knowing what different parts of forest diversity look like is a key step towards getting it.

There are several key parts to diversity: those things that grow and live in a forest, how those things are arranged and when those things happen. Each is shaped or influenced by the physical environment (like soils or elevation) and natural processes (like competition, storms or fire). Many kinds of diversity can also be enriched by us.

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Brad Withrow-Robinson and Amy Grotta, OSU Forestry & Natural Resources Extension.

We often hear from landowners that that they want a diverse, natural-looking forest. Their reasons vary. Some folks are aware of the many ecological benefits that diversity brings to a woodland property, while others may have been inspired by the beauty of an old growth forest.

Old growth forest at HJ Andrews Experimental Forest, Blue River OR

Of course, it takes centuries for an old growth forest to develop and many of our readers have young stands planted within the last decade or two that may look more like this:

Young D-fir plantation in foothills of the Coast Range

So how do you move from one situation to another?

Happily, a landowner has many ways to influence and encourage diversity in their woodlands. Even if you have just bought some recently cut-over land, it does not have to remain a simple timber plantation if you do not want it to be. You can grow a diverse forest. And it can be done within decades rather than centuries. No, it will not be old growth, but it may help reach many of the diversity-related objectives landowners commonly mention, including an attractive forest setting, better habitat for a variety of animals and a resilient forest.

A network of paths leads from any starting point in a woodland’s development. Each crossing is an event or decision that leads in a different direction and towards a different woodland condition.

In this series, we will be exploring the pathways to a diverse forest in western Oregon. These ideas also apply to an oak woodland, a riparian forest as well as an upland conifer-dominated forest. In our next post we look at what makes a forest diverse and why it matters. In later posts we will consider turns you can take throughout the life of the forest to restore, enhance and maintain woodland diversity to match your particular objectives.

Another view of pathways, incorporating competitive zones leading to certain outcomes.

By Amy Grotta, OSU Forestry & Natural Resources Extension – Columbia, Washington & Yamhill Counties

For the fourth installment in our series on native shrubs that are beneficial to wildlife, I’ve chosen one that appropriate to the season, provides some nice fall color to our forests. Now I’ve met more than a few woodland owners who are not fans of vine maple; it’s not a favorite of those who prefer a tidy or parklike forest. Working or wandering in mature forests you’ve probably tripped over it or crawled under it and possibly cursed it under your breath. Nevertheless, vine maple is another of those “brush” species that benefits wildlife in numerous ways. With some tolerance for its rambling ways you can find a place for this species to provide that service on your woodland in concert with your other land management goals. If you are interested in enhancing wildlife habitat on your property, read on for our species profile.

Species name: Vine maple (Acer circinatum)
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Brad Withrow-Robinson, Forestry & Natural Resources Extension Agent, Benton, Linn and Polk Counties.

Continuing on the general theme of young stand management and especially the need for thinning, I’d like to look at strategies for thinning a young stand. Let’s start with some things to keep in mind about Young Stand Thinning or YST (also called precommercial thinning or PCT):

The idea of young stand thinning (YST) is to avoid harmful overcrowding later by removing excess trees early on.
The impact of thinning out a tree is very local. The overall stocking level (trees per acre) can be misleading. It is the spacing among immediate neighbors that counts.
The greatest benefit of YST is increased growing space rather than selection among trees. Creating more growing space to benefit as many leave trees as possible is the primary goal. Culling is secondary.
YST is key to achieving longer rotations and many non-timber objectives many family forest landowners desire.

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By Amy Grotta, OSU Forestry & Natural Resources Extension – Columbia, Washington & Yamhill Counties

If one of your land management goals is to provide wildlife habitat, you’ll want to consider keeping a mix of native shrub species on your property. Shrubs provide a host of services to wildlife, including shelter or cover, nesting space, and food from their twigs, leaves, flowers, and fruit. With thought given to species selection and location, retaining existing shrubs or planting them can benefit wildlife without compromising timber growth or forest operations. This is the third article in our Shrubs for Wildlife series (see others here and here). Each article highlights one species that benefits wildlife in northwest Oregon forests.

Species Name: Oceanspray (Holodiscus discolor)

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By Brandy Saffell and Amy Grotta, OSU Forestry & Natural Resources Extension

Snowberry leaves and fruit in the fall. Photo: Pat Breen, OSU

If one of your land management goals is to provide wildlife habitat, you’ll want to consider keeping a mix of native shrub species on your property. Shrubs provide a host of services to wildlife, including shelter or cover, nesting space, and food from their twigs, leaves, flowers, and fruit. With thought given to species selection and location, retaining existing shrubs or planting them can benefit wildlife without compromising timber growth or forest operations. This is the second article in our Shrubs for Wildlife series (first is here). Each article will highlight one species that benefits wildlife in northwest Oregon forests.

Species Name: Common snowberry – Symphoricarpos albus Continue reading →

By Brandy Saffell and Amy Grotta, OSU Forestry & Natural Resources Extension

If one of your land management goals is to provide wildlife habitat, you’ll want to consider keeping a mix of native shrub species on your property. Shrubs provide a host of services to wildlife, including shelter or cover, nesting space, and food from their twigs, leaves, flowers, and fruit. With thought given to species selection and location, retaining existing shrubs or planting them can benefit wildlife without compromising timber growth or forest operations. This is the first article in a series intended to help you recognize some of the “brush” species that may exist on your property, and understand how they may fit with your management goals. Each article will highlight one species that benefits wildlife in northwest Oregon forests.

Species Name: Cascara (or cascara buckthorn, chittam) – Rhamnus purshiana Continue reading →

TreeTopics

Serving small woodland owners and managers in the Willamette Valley and northwest Oregon

Tag Archives: wildlife

This Forest’s Diversity is for the Birds

Growing a Diverse Forest: Steps to a Structural Diversity “Forest Makeover”

Opportunities to enhance species diversity in small woodlands

Recipes for Growing a Diverse Forest

Growing a Diverse Forest: Choosing your path

Shrubs for wildlife – Vine maple

Young Stand Thinning Strategies

Shrubs for Wildlife – Oceanspray

Shrubs for wildlife: Snowberry

Shrubs for wildlife: Cascara

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