Accession Number : ADP002022

Title :   Limnological Study of the Coastal Lagoon 'Coyuca de Benitez, Guerrero' during an Annual Cycle (Summer 1981 - Spring 1982),

Corporate Author : UNIVERSIDAD NACIONAL AUTONOMA DE MEXICO MEXICO CITY LAB INTERDISCIPLINARIO

Personal Author(s) : Ruiz Azuara,P. ; Perez Zea,A. Ma. ; Segarra Alberu,Ma. del P.

Report Date : JUN 1982

Pagination or Media Count : 10

Abstract : A limnological study of the Coastal Lagoon Coyuca de Benitez, Guerrero was initiated in August 1981. Seasonal variations of water net primary productivity during an annual cycle (Summer 1981-Spring 1982) were our principal interest. The main goal was to explore the real capabilities of the remote sensing techniques that are available in our country for this kind of studies. The program was composed of three principal parts: water-truth sampling, later laboratory process (water samples and recorded films in situ ) and aerial images of Lagoon. Physical, chemical and biological parameters were seasonally measured for ten sample points previously selected. The main parameters were: air and water temperatures, pH, depth, Secchi disk transparency, superficial water velocity, water dissolved oxygen, water conductivity, hardness, total suspended solids, salinity, chlorophyll a and water net primary productivity. Zooplankton and fitoplankton samples are being studied. Normal and infrared color photographies were taken in situ. Aerial B/W infrared photographies and multispectral images of the Lagoon corresponding to summer and winter were were also available. Correlations among measured parameters are shown. The results obtained from the images are also discussed. The annual limnological study indicated that the Lagoon showed an oscillating dynamics with a dystrophic tendency. (Author)

Descriptors :   *Lagoons(Landforms), Mexico, Coastal regions, Aerial photography, Infrared photography

Distribution Statement : APPROVED FOR PUBLIC RELEASE