Accession Number:

AD0485403

Title:

MATHEMATICAL MODEL OF ENVIRONMENTAL INFLUENCE OF PLANKTON MOVEMENT.

Descriptive Note:

Final rept. 1 Dec 62-31 May 66,

Corporate Author:

MIAMI UNIV FL MARINE LAB

Personal Author(s):

• Moore, Hilary B.

Report Date:

1966-06-01

Pagination or Media Count:

37.0

Abstract:

A mathematical model is presented representing the interaction of temperature, illumination, pressure and a seasonal cycle in determining the vertical distribution of a number of species of oceanic copepods. For each environmental factor there is an index of preferred conditions and an index of sensitivity to departure from these. The variations of these indices diurnally and through the population are discussed. An attempt is made to characterize the behaviour of species in relation to the depths which they occupy in the daytime and at night. The behaviour characteristics associated with diurnal migration are discussed and also the degree of variation of behaviour characteristics within the population of a species. An attempt is made to use the model to predict the relative abundance of a species in different geographic regions whose hydrographic conditions are known. Author

Descriptors:

• *PLANKTON
• POPULATION
• DIURNAL VARIATIONS
• OCEANS
• ENVIRONMENTS
• ILLUMINATION
• TEMPERATURE
• PRESSURE
• MARINE BIOLOGY
• AQUATIC ANIMALS
• MOTION
• SENSITIVITY
• BEHAVIOR
• GEOGRAPHY
• DISTRIBUTION
• ECOLOGY

Subject Categories:

• Biological Oceanography
• Numerical Mathematics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE