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So far Udo has created 297 blog entries.

December 2022



Planaria is an animal rarely visible in biological pools, even if there were many there. But it is a species widely used in scientific biology laboratories. This species can be cut into pieces, and each piece can regenerate into a complete organism! What sounds brutal has greatly helped scientists to better understand the biology [...]


November 2022

Restoring forests


Forests are the lungs of the world, and indigenous forests, with the site's original species composition, are the best for helping mitigate effects of global warming. In addition, they are home to a huge biodiversity of plants and animals. There are also nature-based solutions for restoring forests, for which we are specialists. We have [...]

Restoring forests2022-10-27T17:08:18+01:00

October 2022

Bacteria in biological pools


The hygienic purity of water is essential for the success of biological pools. In some biological swimming pools for tourist use, it is confirmed monthly by regular analyses. Bio Piscinas, Lda. recommends that all tourist units with biological pool carry out this self-control of their own volition, despite the absence of a legal obligation [...]

Bacteria in biological pools2022-10-04T15:27:22+01:00

Bird observation


Biological pools are true bird observatories. Pete Downs' photo proves that a biological pool attracts the most varied species of birds. This little egret visits the photographer's biological pool, attracted by the croaking frogs and took the time to inspect the banks. Birds come to biological pools to quench their thirst and kingfishers look [...]

Bird observation2022-10-04T15:21:00+01:00

September 2022

Freshwater shrimp


Few know that there are freshwater shrimp in Portugal. Inhabits rivers and streams. There are records in the center of the country, in the limestone areas  north of Lisbon and it is relatively common in the streams of the Algarve. Atyaephyra desmarestii, as scientists call it, is naturally distributed in the western Mediterranean. The [...]

Freshwater shrimp2022-08-30T15:49:46+01:00

August 2022

Night creatures


Frogs, newts, dragonflies, swallows drinking water... the natural life next to the biological pool is widely known. But it's not the whole range, because when the sun disappears, the team changes. The night creatures come. The beginning of the change can be noticed through a detail. There are no longer dragonflies in flight, with [...]

Night creatures2022-07-31T09:56:06+01:00

July 2022



At the biological pool, on a plant or rock near the water, it is not uncommon to find something similar as shown in the photo. It is an exuvia or molt of an aquatic insect. It's not a dead animal, it's just the larval skin of a dragonfly. These larvae, when they finish their [...]




The EU-funded PONDERFUL project is investigating how ponds (natural and artificial) can be used as nature-based solution for climate change. The project is evaluating the interaction and feedback between biodiversity, ecosystem services and climate. One knows that low nutrient ponds like natural swimming pools are harvesting CO2 due to their high amount of water [...]


Holiday with swimming pond


The calendar summer has already arrived, summer with higher temperatures that encourage for swimming will also come, sooner or later. Time to think about holiday! Those who go to the coast are dreaming of refreshing dips in the ocean waves. Those who go to the interior looking for more naturalized bathing, know beaches on [...]

Holiday with swimming pond2022-06-30T10:57:03+01:00

June 2022



The "classic" biological pool is reminiscent of a natural lake. Here, the plant area and the bathing area form a single water table. There are many other variants. One of them we can call biopool, since it is much more resembling a conventional swimming pool. In this configuration, the bathing area can be much [...]

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