Phytoplankton Species Successions and their Hydrological Environment at a Coastal Station off Sydney

摘要: Phytoplankton species occurrence was studied during 1978-1981 at a coastal station off Sydney and succession patterns were sought using polythetic agglomerative classification analysis. Three major phytoplankton categories distinguished: (1) large group of (including most nanoplankton), which present throughout the year; (2) diatom species, bloomed following episodic nutrient enrichments in spring, early summer, autumn winter; (3) warm-water (e.g. Trichodesmium), associated with admixture tropical water masses. Gross features cycle these waters are related to erratic flow pattern East Australian Current. However, clear short-term (4-14 weeks) successions evident within spring summer blooms. These began small diatoms (Asterionella, Leptocylindrus, Skeletonema, Thalassiosira) followed first by (Detonula, Rhizosolenia, Stephanopyxis) then dinoflagellates (Ceratium, Protoperidinium). This sequence is identical that observed other parts world. A checklist (280 species) for included as an appendix.