EAE1022 Lecture Notes - Lecture 25: Perseveration, Uniformitarianism, Microprobe

• School: Monash University
• Department: Science - Atmospheric Science
• Course: EAE1022
• Professor: Marion Anderson

Document Summary

Eae1022 lecture 25 - earth, atmosphere and environment. Species distributions as indicators of the geographical template at the time: morphological (functional) characteristics of species as indicators of conditions, chemical signatures in biological remains as indicators of atmospheric and geographical. Long term growth recording species (e. g. trees, corals) conditions. Calibration models (transfer functions: assumption: the factors that influence the abundance and distribution of contemporary organisms are similar to those that affected the species distribution in the past (uniformitarianism) Pollen production: relationship between pollen production and dispersal method, wind pollination is very unpredictable, so wind pollinators produce many times more pollen than do non - wind taxa. Insect pollination is much more efficient as it is more targeted - pollen production is significantly less. Interpretation: vegetation change, data tools, human impact. Issues: not all plants produce the same amount of pollen, over/under representation within pollen record, pollen preservation, differential perseveration depend on grain structure.