The huge flotation era
...should we be proud of. During the time when both roads and railways were basically absent, it was possible to transport enormous quantities of timber out to the industries on the coast by the help of the strength of our lively waterways.
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Therefore, we have a lot to thank forestry for when it comes to today's welfare and economic growth. But we also need to understand the other side of the effects - the long-term wounds the floating era caused our nature.
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Closed side furrow
BEFORE FLOATATION ERA
Boulders were all over and fallen trees was a common sight in the waters. These were good hiding places for fish and other aquatic species, but also provided a very variedwater courses in both depth and breadth. Floodplains are
the flat areas next to watercourses as flooded
above the norm that and which help to break
water speed at high flows. The vegetation on
the swimming plane has one cleansing effect on
the water that flows past. Side furrows that
branches off from the main watercourse
constitute a protected environment in which to grow up
for aquatic species. The trees that
growing atside furrowsgives well with
shade and also nourishment in form
of leaves and plant parts that become
for insect food.
Dead wood (fallen trees)
The mushroom plane
Stone wall
AFTER FLOATING ERA
Side furrows were cut off from the watercourse by simply plugging it with rocks. Med helpby hand, horses, winches and track tractors succeededbasically push away all blocks and stones to the edges of the water course because if stones were in the water the timber could get stuck. The boulders that were pushed out of the water course formed longitudinal hills, so-calledrocklol. They form a boundary between the water and its surroundings and lead to that land no longer being able to absorb water at high flows. Brick wallsbuilt of boulders whose angular shape that was cracked forth ur slabs or blocks using wedges.
Brick wall
Side furrow
To facilitate the timber's progress on the water, the waterways were straightened like canals and cleared of blocks and stones. Large boulders were blown away with dynamite andpondswere built in the smaller watercourses to be able to release water when needed. Gravel and sand were washed away as the lack of boulders and curves in the watercourse resulted in high water velocity.
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It therefore became difficult for many aquatic species to live, move and reproduce in an environment that flows far too fast. Many animal species in and around water have become threatened and need our help to have their habitats restored.
Flotation ponds
Dams were built in smaller watercourses to be able to provide extra "water boost" to the larger watercourses when needed. The dams were often placed at a lake outlet or seal so that masses of water could be stored.
Brick walls
Can be valuable from a cultural-historical perspective. An antiquarian works in ecostreams who inspects all routes to be restored. This is so as not to damage valuable environments that tell our history during the restoration.
Stone ramparts
Rock walls can be hard to see to the untrained eye. Since a large part of the clearing took place about 70 years ago, there may be full-grown forest on the embankments!