Forestry

Forestry

Sustainable, well-planned, near to nature forest management deals with the production of raw timber. The classical central disciplines are silviculture, forest growth and yield and forest planning supplemented by information on the timber market, storage and bio-energy. Loss events, such as windfall, bark beetle or game damage, present an ever re-occurring challenge to forest personnel. Successful management in avoiding and limiting risks and damage is part of an effective operational strategy.

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Jewel beetles - beneficiaries of dry summers

Jewel beetles, also known as metallic wood-boring beetles, profit in two ways from a dry summer: firstly because the warm summer accelerates their development, and secondly because the forest trees are weakened by the drought.

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The bark of Norway spruce and Silver fir – thinner than expected

Bark thickness is a measurement for assessing economic value of roundwood and for estimating wood and bark biomass. The currently applied bark deduction values in Germany are based on measurements in the 1970s. The objectives were to test their suitability for different bucking patterns and stem segments.

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Non-native tree species

For conversion forest stands because of climate change non-native species are also considered on top of the site appropriate native tree species. They present a good alternative, especially on sites where native species can hardly be utilized.

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Wildfire risk in times of climate change

Climate change is talked about a lot nowadays. Institutions are trying to find possibilities to comply with the 2°C-target to keep climate change in a tolerable dimension. This article is supposed to depict the correlation between climate change and increasing wildfire risk.

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Effective medication or a harmless household remedy?

With liming, comparisons with human medicine are unavoidable since lime works like a strong medication on the soils and forests. Medications often have risks and side effects. Patients are to be informed of this before their use.

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Do thinning measures help in dry periods?

For spruce climate change is heavy. Forest owners can help them just with silvicultural measures. Can a thinning measure exonerate the water balance of the trees?

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Bark beetles, beware: The three-toed woodpecker!

Three-toed woodpeckers predominantly prey on bark beetles and play a key role in controlling beetle populations in forests dominated by conifers. Their impact is greatest where they occur year-round and thus also breed there. For this, the average deadwood volume needs to be at least 33 m3 per hectare.

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Tree growth on the fast track

Continuous monitoring of growth on experimental forest plots since 1870 – this is a global rarity. Just as fascinating is what this observation has revealed: our trees have been growing faster over the last five decades than they did before.

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Forest protection with sessile oak

Sessile oak is a highly desired tree species. However, a few of the many residence found living on the tree are causing problems for it. It is particularly precarious for the tree when early and late defoliators appear together.

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Rotting spruce trees – what can be done to control red rot?

Buyers of timber are looking for white, firm spruce timber – and are prepared to pay a good price for it. Reddish discolourations on the other hand are not very popular: beware red rot! Here the problem is not the colour but the decomposition of the wood.

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Heading image: Ulrich Wasem