Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Preliminary investigation on phytoplankton dynamics and primary production models in an oligotrophic lake from remote sensing measurements |
| Abstract | The aim of this study is to test a series of methods relying on hyperspectral measurements to characterize phytoplankton in clear lake waters. The phytoplankton temporal evolutions were analyzed exploiting remote sensed indices and metrics linked to the amount of light reaching the target (E), the chlorophyll-a concentration ([Chl-a] ) and the fluorescence emission proxy. The latter one evaluated by an adapted version of the Fluorescence Line Height algorithm (F). A peculiar trend was observed around the solar noon during the clear sky days. It is characterized by a drop of the F metric and the [Chl-a] index. In addition to remote sensed parameters, water samples were also collected and analyzed to characterize the water body and to evaluate the in-situ fluorescence (F) and absorbed light (F). The relations between the remote sensed quantities and the in-situ values were employed to develop and test several phytoplankton primary production (PP) models. Promising results were achieved replacing the F by the E or F in the equation evaluating a PP proxy (R > 0.65). This study represents a preliminary outcome supporting the PP monitoring in inland waters by means of remote sensing-based indices and fluorescence metrics. |
| Source | Sensors (Basel) 21 (15) |
| Keywords | FluorescenceHigh-frequency measurementsHyperspectral measurementsInland watersPhytoplankton primary productionRemote sensing |
| Journal | Sensors (Basel) |
| Editor | Molecular Diversity Preservation International (MDPI),, Basel, |
| Year | 2021 |
| Type | Articolo in rivista |
| DOI | 10.3390/s21155072 |
| Authors | Cesana Ilaria (1); Bresciani Mariano (2); Cogliati Sergio (1); Giardino Claudia (2); Gupana Remika (3); Manca Dario (4); Santabarbara Stefano (5); Pinardi Monica (2); Austoni Martina (6); Lami Andrea (4); Colombo Roberto (1) |
| Text | 456412 2021 10.3390/s21155072 Scopus 2 s2.0 85111122962 Fluorescence High frequency measurements Hyperspectral measurements Inland waters Phytoplankton primary production Remote sensing Preliminary investigation on phytoplankton dynamics and primary production models in an oligotrophic lake from remote sensing measurements Cesana Ilaria 1 ; Bresciani Mariano 2 ; Cogliati Sergio 1 ; Giardino Claudia 2 ; Gupana Remika 3 ; Manca Dario 4 ; Santabarbara Stefano 5 ; Pinardi Monica 2 ; Austoni Martina 6 ; Lami Andrea 4 ; Colombo Roberto 1 1 Universita degli Studi di Milano Bicocca; 2 Consiglio Nazionale delle Ricerche, CNR IREA; 3 University of Zurich; Eawag Swiss Federal Institute of Aquatic Science and Technology; 4 Consiglio Nazionale delle Ricerche CNR IRSA; 5 Consiglio Nazionale delle Ricerche CNR IBF; 6 EcoDyctya Srl The aim of this study is to test a series of methods relying on hyperspectral measurements to characterize phytoplankton in clear lake waters. The phytoplankton temporal evolutions were analyzed exploiting remote sensed indices and metrics linked to the amount of light reaching the target E , the chlorophyll a concentration Chl a and the fluorescence emission proxy. The latter one evaluated by an adapted version of the Fluorescence Line Height algorithm F . A peculiar trend was observed around the solar noon during the clear sky days. It is characterized by a drop of the F metric and the Chl a index. In addition to remote sensed parameters, water samples were also collected and analyzed to characterize the water body and to evaluate the in situ fluorescence F and absorbed light F . The relations between the remote sensed quantities and the in situ values were employed to develop and test several phytoplankton primary production PP models. Promising results were achieved replacing the F by the E or F in the equation evaluating a PP proxy R > 0.65 . This study represents a preliminary outcome supporting the PP monitoring in inland waters by means of remote sensing based indices and fluorescence metrics. 21 Published version http //www.scopus.com/record/display.url eid=2 s2.0 85111122962 origin=inward Preliminary investigation on phytoplankton dynamics and primary production models in an oligotrophic lake from remote sensing measurements Published version sensors_21_05072.pdf Articolo in rivista Molecular Diversity Preservation International MDPI , 1424 8220 Sensors Basel Sensors Basel Sensors Basel Sensors. Basel claudia.giardino GIARDINO CLAUDIA dario.manca MANCA DARIO stefano.santabarbara SANTABARBARA STEFANO andrea.lami LAMI ANDREA mariano.bresciani BRESCIANI MARIANO monica.pinardi PINARDI MONICA TA.P06.018.001 Telerilevamento ottico per il monitoraggio del territorio e dell ambiente |