Data/hora: 22/06/2024 20:57:56

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 22/07/1998
Data da última atualização: | 28/03/2017
Autoria: | LLOYD, D. S.; KOENINGS, J. P.; LaPERRIERE, J. D.
Título: | Effects of turbidity in fresh water of Alaska.
Ano de publicação: | 1987
Fonte/Imprenta: | North America Journal of Fisheries Management, v.7, p.18-33, 1987.
Idioma: | Inglês
Conteúdo: | Turbidity results from the scattering of light in water by organic and inorganic particles; however, high turbidities usually are caused by suspended inorganic particles, particularly sediment. For several Alaska lakes, we found that the depth to which 1% of subsurface light penetrated had a strong inverse correlation with sediment-induced turbidity. We also developed a model that describes the decrease in primary production in shallow interior Alaskan streams caused by sediment-induced turbidity. Euphotic volume in lakes correlated strongly with production of juvenile sockeye salmon (Oncorhynchus nerka). We also observed reduced abundance of zooplankton, macroinvertebrates and Arctic grayling (Thymallus articus) in naturally and artificially turbid aquatic systems. Turbidity measurements correlated less consistently with measures of suspended sediment concentration (total nonfilterable residue), but provided an adequate estimator for use as a water quality standard to protect aquatic habitats.
Palavras-Chave: | Aquatic community; Comunidade aquatica; Turbidez.
Thesagro: | Água; Sedimento.
Thesaurus Nal: | freshwater; sediments; turbidity.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (35845-1) - ADC - SP - PP - SP15597 -  - 15597 - DIS