In tropical lakes, the characteristics and dimension of the coastal wetlands can have a strong influence on the quality of the inshore waters. The interaction between littoral wetlands and the open water environment is complex and requires an understanding of the material and energy exchanges between these compartments. In the present analysis, we examine the impact of wetlands on the optical properties (underwater light environment) of two adjacent bays on the Ugandan side of Lake Victoria. We use both irradiance profiles within the water column as well as measurements of the dissolved and particulate fractions of the water column. By introducing a new term to identify that part of the solar spectrum most affected by wetland released dissolved organic matter, it is possible to determine the area of each bay that is influenced by the wetland. Depending on the period of analysis, wetland released chromophoric dissolved organic matter can play a dominating role in the attenuation of UV and visible radiation in the underwater environment. © 2007 Springer Science+Business Media B.V.

Bracchini, L., Loiselle, S.A., Tognazzi, A., Rossi, C., Focardi, S., Cozar, A., et al. (2007). The optical qualities of shallow wetland lined bays in Lake Victoria. WETLANDS ECOLOGY AND MANAGEMENT, 15(6), 509-519 [10.1007/s11273-007-9050-x].

The optical qualities of shallow wetland lined bays in Lake Victoria

Loiselle, S. A.;Rossi, Claudio;Focardi, Silvia;
2007-01-01

Abstract

In tropical lakes, the characteristics and dimension of the coastal wetlands can have a strong influence on the quality of the inshore waters. The interaction between littoral wetlands and the open water environment is complex and requires an understanding of the material and energy exchanges between these compartments. In the present analysis, we examine the impact of wetlands on the optical properties (underwater light environment) of two adjacent bays on the Ugandan side of Lake Victoria. We use both irradiance profiles within the water column as well as measurements of the dissolved and particulate fractions of the water column. By introducing a new term to identify that part of the solar spectrum most affected by wetland released dissolved organic matter, it is possible to determine the area of each bay that is influenced by the wetland. Depending on the period of analysis, wetland released chromophoric dissolved organic matter can play a dominating role in the attenuation of UV and visible radiation in the underwater environment. © 2007 Springer Science+Business Media B.V.
2007
Bracchini, L., Loiselle, S.A., Tognazzi, A., Rossi, C., Focardi, S., Cozar, A., et al. (2007). The optical qualities of shallow wetland lined bays in Lake Victoria. WETLANDS ECOLOGY AND MANAGEMENT, 15(6), 509-519 [10.1007/s11273-007-9050-x].
File in questo prodotto:
File Dimensione Formato  
169 Wet Ecol Manag 2007.pdf

non disponibili

Tipologia: Post-print
Licenza: NON PUBBLICO - Accesso privato/ristretto
Dimensione 614.2 kB
Formato Adobe PDF
614.2 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/3577
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo