Semináře

Semináře Hydrobiologického ústavu BC AV ČR, v.v.i. a pobočky České limnologické společnosti v Českých Budějovicích


8.10. Phosphorus in the Římov catchment tributaries

Susanne Schmidt (IHB)

Despite measures to restrict nutrient input into the Římov reservoir (e.g. the installation and reinforcement of sewage treatment plants), particularly phosphorus input continues to be high enough for the reservoir to risk continuing eutrophication. Since the point sources are largely minimized, the question arose where in the catchment the phosphorus input could still be coming from. In a 15 year-long data set of 10 tributaries in the catchment, we searched for spatial and temporal patterns of nutrient concentrations to answer this question. The three forest sub catchments showed relatively high phosphorus concentrations and loads, with high variations. Since usually, forest landuse is assumed to contribute the least to phosphorus exports, we prioritized on these three forest sites in order to understand the basic processes better. Here, I will focus on two questions: 1) does declining or variable forest health correlate with nutrient export? 2) is there a stream flow fraction that is predominantly responsible for transporting nutrients, i.e. is nutrient transport rather triggered by stormwater superficial instantaneous runoff, or rather by the steady, groundwater-derived baseflow, and which role does temperature play? For the first question I am using data on forest health from Infrared pictures which I verified with aerial picture evaluations. To answer the second question, I am using the Sacramento model and multiple linear regression.

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15.10.

Karsten Rinke (UFZ Magdeburg)

 

 

Naposledy aktualizováno 5.10.2020 09:50

 

 


 

Pokud není uvedeno jinak, semináře se konají vždy ve čtvrtek od 13:00 hodin v přednáškovém sále Hydrobiologického ústavu BC AV ČR v.v.i., Na sádkách 7, České Budějovice ("velká zasedačka" v přízemí, 008). Přednášecím jazykem je angličtina. Anotace k přednáškám najdete na anglické verzi stránek HBÚ.
Kontakt: Jiří Kaňa, jiri.kana@hbu.cas.cz

 

 

KONTAKT

Biologické centrum AV ČR, v.v.i.
Hydrobiologický ústav
Na Sádkách 702/7
370 05 České Budějovice

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