Patterns of temporal variation in lake titicaca peru bolivia a high altitude tropical lake i. background physical and chemical processes and primary production
Richerson, P.J.; Neale, P.J.; Wurtsbaugh, W.; Alfaro, R.; Vincent, W.
Hydrobiologia 138: 205-220
ISSN/ISBN: 0018-8158 Accession: 006075895
A statistical analysis is presented of patterns of variation in some physical, chemical, and biological variables for a 6 year series of data from the tropical, high altitude Lake Titicaca (Peru-Bolivia). ANOVA techniques and autocorrelation analyses were used to partition the variance in Titicaca, and in some comparison tropical and temperate series, into components with repeatable annual cycles and components attributable to other kinds of patterns. In Titicaca, insolation and stratification are highly seasonal in pattern of variation, although the amount of variance relative to means is small compared to temperte lakes. However, the seasonal pattern of physical variation is only weakly imposed on chemical and biological processes, to judge from analyses of silicate, oxygen, and primary production series. Comparable temperate series of primary production and chlorophyll .alpha. are much more seasonal.