Abstract
Sustained observations of microbial dynamics are rare, especially in southern hemisphere waters. The Australian Marine Microbial Biodiversity Initiative (AMMBI) provides methodologically standardized, continental scale, temporal phylogenetic amplicon sequencing data describing Bacteria, Archaea and microbial Eukarya assemblages. Sequence data is linked to extensive physical, biological and chemical oceanographic contextual information. Samples are collected monthly to seasonally from multiple depths at seven sites: Darwin Harbour (Northern Territory), Yongala (Queensland), North Stradbroke Island (Queensland), Port Hacking (New South Wales), Maria Island (Tasmania), Kangaroo Island (South Australia), Rottnest Island (Western Australia). These sites span ~30° of latitude and ~38° longitude, range from tropical to cold temperate zones, and are influenced by both local and globally significant oceanographic and climatic features. All sequence datasets are provided in both raw and processed fashion. Currently 952 samples are publically available for bacteria and archaea which include 88,951,761 bacterial (72,435 unique) and 70,463,079 archaeal (24,205 unique) 16 S rRNA v1-3 gene sequences, and 388 samples are available for eukaryotes which include 39,801,050 (78,463 unique) 18 S rRNA v4 gene sequences.
Highlights
Background & SummaryBacteria, Archaea and microbial eukaryotes dominate ocean ecosystems, composing 90% of marine biomass[1]
Integrated Marine Observing System (IMOS) was established in 2007, and operates a network of national reference stations (NRS) that consist of moored sensors and regular vessel-based sampling[2]
Samples are collected at seven IMOS NRS: Port Hacking, North Stradbroke Island (NSI), Maria Island (MAI) Rottnest Island (ROT), Yongala (YON), Darwin Harbour (DAR) and Kangaroo Island (KAI) (Fig. 1)
Summary
Archaea and microbial eukaryotes dominate ocean ecosystems, composing 90% of marine biomass[1]. Samples are collected at seven IMOS NRS: Port Hacking (site code: PHB), North Stradbroke Island (NSI), Maria Island (MAI) Rottnest Island (ROT), Yongala (YON), Darwin Harbour (DAR) and Kangaroo Island (KAI) (Fig. 1) These IMOS NRS locations span over 30° of latitude and have been designed to maximize representation of the important marine biomes that are present around the continent[2]. All sites are affected to various degrees by basin scale events including the El Niño Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD), which are known to alter local oceanography, such as by enhancing upwelling[3], and local biology, including fisheries[4] These inter-annual events have a large influence on Australia’s two southerly flowing boundary currents, the Leeuwin Current (LC) on the Indian Ocean bounding west coast, and the East Australia Current (EAC) on the Pacific Ocean bounding east coast[5]. Little is known concerning the movements, adaption or range expansion of marine microbes
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