Response of diatom communities to climate and human disturbance: A 4200-year record from Costa Rica
Madeleine Bitting,
Erik N Johanson,
Kurt A Haberyan
et al.
Abstract:This study integrates diatom analysis with existing records of pollen, charcoal, elemental composition, and stable light isotopes to expand upon the 4200-year history of human activity and climate change from Laguna Los Mangos in southern Pacific Costa Rica. We counted diatoms in peroxide-treated samples and analyzed community composition using cluster analysis, revealing four distinct assemblage zones with diatom variability most closely correlated with phosphorus, titanium, and organic content. The earliest … Show more
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