Plant
Common duckweed
- Records in GBIF
- 1,193
- Fishing districts near where it occurs
- 1,400
- Most sightings
- August
About the species Common duckweed
About the species
A tiny floating plant that can cover the whole surface of standing water.
Where to find it by the water
Still waters, ponds and oxbows, especially those rich in nutrients.
What this means for anglers
A dense carpet indicates standing water rich in nutrients and blocks light penetration and aeration. Oxygen shortage can develop beneath it.
When it is observed
Records by month in the areas around the fishing districts (GBIF).
- 5Jan
- 0Feb
- 3Mar
- 5Apr
- 45May
- 188June
- 353July
- 391Aug
- 152Sep
- 38Oct
- 3Nov
- 1Dec
In November the species is observed less than in the main season. Most records are from August.
The records come from people's observations and also reflect when and where observers move around. They are not a measurement of numbers or a guarantee of an encounter.
Where it was recorded
Fishing districts around which a record of this species exists. Sorted by number of records.
- Čierňanka č. 2 177
- Polhoranka 141
- Rimava č. 1 84
- Rimava č. 2 84
- Blh č. 1 84
- VN Teplý Vrch 84
- Rašický potok 84
- Slaná č. 1 84
- Koňský potok 84
- Teška 84
- Turiec č.1 (Tornaľa) 84
- VN Kurinec 84
- VN Levkuška 84
- VN Číž 84
- VN Hubovo 84
- MR Stará Morava 78
- Morava č. 4 78
- Odpadový kanál 78
- Morava č. 5 78
- Morava č. 6 78
- Morava č. 7a 78
- Odpadový kanál č.2 "Čekr" 78
- OR Moravský Svätý Ján – dolné 78
- OR Moravský Svätý Ján – horné 78
- OR Sekule 78
- MR Panská Morava 78
- MR Raudazi 78
- MR Židova Morávka 78
- Štrkovisko Lúčky 78
- Štrkovisko Oširíd 78
- Feld 62
- Prukse 62
- Kanál Malina č. 1 62
- Morava č. 3 62
- Morava č. 1 62
- Morava č. 2 62
1,400 fishing districts in total, 36 shown. The number next to a fishing district is the number of records around it. Show on map
More species from the group plants
Photo credits
- Common duckweed: Photo: author not stated, CC BY-SA 3.0, Wikimedia Commons
- Common reed: Photo: W.carter, CC0, Wikimedia Commons
- Broadleaf cattail: Photo: Peter O'Connor aka anemoneprojectors from Stevenage, United Kingdom, CC BY-SA 2.0, Wikimedia Commons
- Yellow flag iris: Photo: Myrabella, CC BY-SA 3.0, Wikimedia Commons
- Black alder: Photo: AnRo0002, CC0, Wikimedia Commons
- Japanese knotweed: Photo: W.carter, CC0, Wikimedia Commons
- Himalayan balsam: Photo: H. Zell, CC BY-SA 3.0, Wikimedia Commons
The advice is general and does not replace the instructions of a doctor, rescuers, the site manager or the fishing regulations. Do not disturb protected species or dismantle their shelters.