regrowth / biofilm
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regrowth
In forestry and agriculture, the totality of young, regrowing plants, especially trees, in a particular area.
Der Förster prüft regelmäßig den Aufwuchs im neu bepflanzten Waldstück.
The forester regularly checks the regrowth in the newly planted section of forest.
biofilm
In biology, the layer of algae, bacteria, and microorganisms that forms on surfaces underwater, for example on stones, plants, or ship hulls.
Der Aufwuchs auf den Steinen im Aquarium muss regelmäßig entfernt werden.
The biofilm on the stones in the aquarium has to be removed regularly.
'Der Aufwuchs' comes from the verb 'aufwachsen' (to grow up/grow). So it describes what 'aufwächst' (grows) — either young plants growing out of the ground or organisms growing on a surface.
Der Aufwuchs von Algen am Schiffsrumpf verlangsamt die Fahrt.
The growth of algae on the ship's hull slows the journey.
This word belongs mainly to technical language. It is used especially in forestry, biology, and aquaristics.
Der Biologe untersucht den Aufwuchs auf den Korallen.
The biologist is examining the biofilm on the corals.
'Aufwuchs' is a collective term and is almost always used in the singular, even when talking about many individual plants or organisms.
Nach dem Waldbrand erholt sich der Aufwuchs nur langsam.
After the forest fire, the regrowth is recovering only slowly.
offspring / young talent
Nachwuchs refers to the young next generation of living things, such as young animals. Aufwuchs, by contrast, refers to the population of young plants in an area. Nachwuchs is therefore appropriate for young animals, while Aufwuchs is used for regrowing trees and other plants.
Im Wald schützt der Förster den Aufwuchs aus jungen Bäumen.
In the forest, the forester protects the young growth of trees.
Im Wald kümmert sich die Rehmutter um ihren Nachwuchs.
In the forest, the doe carefully looks after her offspring.
