In our previous article, we wrote about the belvedere built in the restored area allowing to beneficiate of a great view of the surroundings. We decided to take use this favored location to observe and identify birds flying above the quarry. Students correctly identified using identification keys: swans and ducks swimming quietly on the lake, black kites and great cormorants. We even found on the top of the belvedere several ducks and little ringed plover eggs (see pictures across).
We continued our workshop below the belvedere about aquatic vegetals. Numerous very common species for aquatic areas were found by students, such as: water mint, reed, and common water-crowfoot. Students learned general notions of vegetal biology: what does a plant need to grow? What is the photosynthesis? Then, we discussed about the adaptation mechanism occurring in specific vegetal of the aquatic areas: roots adaption, air-containing cells, air absorption strategies… We also talked about invasive species as the pampas grass which is covering some areas of the quarry.
On the edge of the lake, we used a net to catch aquatic animals. Students observed in tins covered by magnifying glasses copepods, dragonfly larvae, diving beetles and backswimmers. Concerning again invasive species, we found several Louisiana crawfishes. A good way to introduce students to ecological notions.