|Influence de la température sur la production primaire en Méditerranée|
Brouardel, J.; Desrousseaux, J.-Y. (1979). Influence de la température sur la production primaire en Méditerranée. Mémoires de l'Institut océanographique, Monaco, 12. Institut Océanographique: Monaco. ISBN 2-7260-0007-X. 44 pp.
Part of: Mémoires de l'Institut océanographique, Monaco. Musée Océanographique: Monaco. ISSN 0304-5714, more
Limiting factors; Mathematical models; Phytoplankton; Primary production; Seasonal variations; Temperature effects; Mediterranean [Marine Regions]; Marine
|Authors|| || Top |
- Brouardel, J.
- Desrousseaux, J.-Y.
The first part of this study deals with preliminary experiments done in summer on some water samples collected off Monaco and which were submitted to temperatures ranging from 6 degree C to 40 degree C and to an artificial light of constant intensity. The second part records later experiments which were destined to verify whether the results obtained earlier could be considered general to other lightings and at other seasons. The authors concluded that from 6 degree C upwards, production increases rapidly with the rising temperature. The rate of growth is to the order of 20 p. 100 per degree, at the beginning, and then decreases to cancel itself out around 23 degree C, a temperature at which maximum production is reached. Beyond 23 degree C, production decreases progressively until it stops completely around 40 degree C. The second part of this study confirms the generality of these results, five years later, at the same season, but this time limited to a more restricted temperature interval (16 degree C - 26 degree C). It has shown, moreover, by experiments carried out at the same time in artificial light at two different intensities and in natural light, that the variation rate of production in terms of temperature was the same and, at a given period, the temperature of the maximum production was also the same. The position of this maximum varies according to the seasons, but within rather narrow limits; thus, in winter, it approaches 22 degree C; at the end of the summer, it is situated above 24 degree C.