Claim · model-written summary
Cyperus papyrus density peaked in April and June and then decreased gradually through autumn and winter.
- Taxon
- Cyperus papyrus
_(7079191471).jpg?width=60)
Cyperus papyruse0 - Outcome
- densitye1
- Direction
- gradual decreasee1
- Qualifier
- in April and Junee1
Verbatim
e0“of Cyperus papyrus L in natural and managed stands”
e1“The peak of density of the plant was recorded in April and June with a gradual decrease during autumn and winter”
Title
Ecology and biomass production of Cyperus papyrus L. on the Nile bank at Damietta, Egypt
Mamdouh S. Serag 2003
Other claims from this paper (13)
- Observation Cyperus papyrus reached an average height up to 4 m in June and August in both stands.
- Observation Water pH at the natural papyrus stand had a mean of 7.5, ranging from 6.2 to 7.6.
- Observation Water pH at the managed papyrus stand had a mean of 7.3, ranging from 6.4 to 7.8.
- Observation Water conductivity at the natural papyrus stand had a mean of 398 µS/cm, ranging from 340 to 480 µS/cm.
- Observation Water conductivity at the managed papyrus stand had a mean of 475 µS/cm, ranging from 280 to 520 µS/cm.
- Observation The soil of papyrus is rich in nutrients, particularly total phosphorus and nitrogen.
- Observation Total-P in the natural stand soil had a mean of 5.7 mg/100 g dry soil, ranging from 1.3 to 8.5.
- Observation Total-P in the managed stand soil had a mean of 6.3 mg/100 g dry soil, ranging from 3.5 to 8.9.
- Observation Total-N in the soil had a mean of 7.6 mg/100 g dry soil for both stands.
- Observation Above-ground fresh biomass of papyrus reached a maximum of about 30 kg/m 2 in June.
- Observation Papyrus biomass gradually decreased, with minimum values in winter.
- Observation Below-ground biomass followed an opposite trend to above-ground culms in December in both stands.
- Observation Aerial culms of the sedge die and fall off during late autumn and winter.