Main Title |
Response of Estuarine Diatom Assemblages to Ultraviolet-B Radiation (290-320 nm). |
Author |
Brooker, D. L. ;
Worrest, R. C. ;
|
CORP Author |
Oregon State Univ., Corvallis.;Corvallis Environmental Research Lab., OR. |
Year Published |
1985 |
Report Number |
EPA-R-810288; EPA/600/D-85/016; |
Stock Number |
PB85-157402 |
Additional Subjects |
Diatoms ;
Solar Ultraviolet radiation ;
Yaquina Estuary ;
Exposure ;
Light(Visible radiation) ;
Greenhouses ;
Substrates ;
Chlorophylls ;
Biomass ;
Primary biological productivity ;
Growth ;
Radioactive isotopes ;
Morphology ;
Responses ;
Food chains ;
Ultraviolet B radiation ;
Species diversity
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB85-157402 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
18p |
Abstract |
Artificial substrates colonized by diatoms from Yaquina Estuary, Oregon, were exposed to solar visible radiation and three levels of ultraviolet radiation (UV-B, 290-320 nm). Flow-through microcosms were constructed inside a glasshouse to serve as chambers for the artificial substrates. The artificial substrates were sampled during three spring/summer experiments. Chlorophyll a concentration, biomass (ash-free dry weight), primary productivity (radiocarbon uptake), and community composition were the parameters measured biweekly for each four-week experimental period. The results indicated that daily exposure to enhanced levels of UV-B radiation was associated with a decrease in species diversity of benthic diatom assemblages during all experiments after four weeks of growth. |
PUB Date Free Form |
Jan 85 |
Category Codes |
8A; 20F; 47D |
NTIS Prices |
PC A02/MF A01 |
Primary Description |
600/02 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
510721952 |
Origin |
NTIS |
Type |
CAT |