Linda Armbrecht

Linda Armbrecht
University of Tasmania · Institute for Marine and Antarctic Studies (IMAS)

PhD

About

60
Publications
9,175
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294
Citations
Introduction
Linda Armbrecht is a, ARC DECRA Fellow at the Institute for Marine and Antarctic Studies (IMAS), University of Tasmania, Australia. Her research revolves around improving our understanding of past phytoplankton and their relationships with the environment over geological timescales. Linda maintains a broad, interdisciplinary background in marine science, biological oceanography, micropaleontology and paleo-genomics. Her study regions include primarily Antarctica and the East Australian coast.
Additional affiliations
February 2018 - present
Ecole Normale Supérieure de Paris
Position
  • PostDoc Position
Description
  • Marine Genomics
June 2016 - August 2016
National Science Foundation USA
Position
  • Antarctic Biology Course Participant
Description
  • 2016 NSF Advanced Training Program in Antarctica for Early Career Scientists: Biological Adaptations to Environmental Change at Palmer Station, on the Antarctic Peninsula.
August 2015 - November 2015
Macquarie University
Position
  • Supervising BSc Student Research Project
Education
December 2010 - June 2014
Macquarie University
Field of study
  • Phytoplankton Ecology/Biological Oceanography
October 2008 - November 2010
Universität Bremen
Field of study
  • Marine Biology
October 2005 - September 2008
Universität Osnabrück
Field of study
  • Biology of Organisms

Publications

Publications (60)
Conference Paper
This presentation will inform about the latest optimisations in marine sedimentary ancient DNA (sedaDNA) research, and detail applications of this emerging paleo-monitoring tool to the Antarctic environment for the reconstruction of this polar marine ecosystem over thousands of years. sedaDNA research has become increasingly applied to reconstruct...
Article
Full-text available
The Southern Ocean paleoceanography provides key insights into how iron fertilization and oceanic productivity developed through Pleistocene ice-ages and their role in influencing the carbon cycle. We report a high-resolution record of dust deposition and ocean productivity for the Antarctic Zone, close to the main dust source, Patagonia. Our deep-...
Conference Paper
Recent advancements in marine sedimentary ancient DNA (sedaDNA) techniques now enable detection of rare eukaryote taxa in deep ocean sediments. To be determined, however, is how far back in time these taxa can be detected. Here, we present the first authenticated (through sedaDNA damage analysis) metagenomic marine eukaryote sedaDNA from the Scotia...
Conference Paper
The eastern Scotia Sea is known as Iceberg Alley, where large numbers of icebergs are brought to the Antarctic Circumpolar Current via the Weddell Sea Gyre. Icebergs transported through Iceberg Alley today can have traveled in the coastal current from anywhere around the Antarctica margin, but are sourced mostly from the Weddell Sea sector. The Wed...
Conference Paper
The Southern Ocean paleoceanography provides key insights into how iron fertilization and oceanic productivity developed through Pleistocene ice-ages and their role in influencing the carbon cycle. We report the first high-resolution record of dust deposition and ocean productivity for the Antarctic Zone, close to the main dust source, Patagonia. O...
Article
Full-text available
PaleoEcoGen is a new working group that was launched with the aim of bringing together scientists from around the world who use ancient environmental DNA (ancient eDNA) as a novel proxy to examine the response of past biological communities to environmental changes (pastglobalchanges.org/paleoecogen). We are particularly interested in exploiting th...
Conference Paper
Southern Ocean paleoceanography provides key insights into how iron fertilization and oceanic productivity developed through Pleistocene ice-ages and their role in influencing the carbon cycle. We report the first high-resolution record of dust deposition and ocean productivity for the Antarctic Zone, close to the main dust source, Patagonia. Our d...
Conference Paper
Melting of the Antarctic ice sheet (AIS) could lead to sea level rise in future warming scenarios. Recent observations indicate that AIS mass loss is mainly caused by oceanic forcing (e.g., ocean warming and intrusion of warm Circumpolar Deep Water (CDW) onto the continental shelf of Antarctica). Thus, it is crucial for understanding the ocean-ice-...
Chapter
Full-text available
International Ocean Discovery Program (IODP) Site U1536 (proposed Site SCO-13) is located 235 km northwest of the South Orkney Islands at 59°26.46′S, 41°3.66′W in 3220 m of water. Site U1536 is the first of two sites drilled in Dove Basin, which is located in the southern Scotia Sea. This site was targeted to recover a com- plete Neogene record of...
Chapter
Full-text available
International Ocean Discovery Program (IODP) Site U1535 (proposed Site SFSD-02A) is located on the northern flank of a large trough ~668 km east of the Strait of Magellan at 53°11.49′S, 58°38.60′W in 647 m of water. The site is situated at Common Depth Point 9220 on Seismic Reflection Profile SGFI93-107. Site U1535 is the second of a pair of sites....
Chapter
Full-text available
This section provides an overview of operations, depth conven- tions, core handling, curatorial procedures, and analyses performed on the R/V JOIDES Resolution during International Ocean Discov- ery Program (IODP) Expedition 382. This information applies only to shipboard work described in the Expedition reports section of the Expedition 382 Procee...
Book
Full-text available
International Ocean Discovery Program Expedition 382, Iceberg Alley and Subantarctic Ice and Ocean Dynamics, investigated the long-term climate history of Antarctica, seeking to understand how polar ice sheets responded to changes in insolation and atmospheric CO2 in the past and how ice sheet evolution influenced global sea level and vice versa. F...
Chapter
Full-text available
International Ocean Drilling Program (IODP) Site U1538 (pro- posed Site SCO-11) is located 365 km north-northeast of the South Orkney Islands at 57°26.52′S, 43°21.47′W in 3131 m of water. The site lies in Pirie Basin and is situated at Shotpoint 4900 on Seismic Reflection Profile SCAN2013-13, 9 km east of Crossing Line SCAN2013-11. Site U1538 is lo...
Chapter
Full-text available
International Ocean Discovery Program (IODP) Site U1534 (proposed Site SFSD-03A) is located at 53°11.38′S, 58°45.65′W in 605 m of water. The site is situated on the northern flank of an east– west trending trough on the continental shelf ~660 km east of the Strait of Magellan at Common Depth Point 10005 on Seismic Re- flection Profile SGFI93. Site...
Chapter
Full-text available
International Ocean Discovery Program Expedition 382, Ice- berg Alley and Subantarctic Ice and Ocean Dynamics, investigated the long-term climate history of Antarctica, seeking to understand how polar ice sheets responded to changes in insolation and atmo- spheric CO2 in the past and how ice sheet evolution influenced global sea level and vice vers...
Chapter
Full-text available
International Ocean Drilling Program (IODP) Site U1537 (pro- posed Site SCO-18) is located 265 km northwest of the South Or- kney Islands at 59°6.65′S, 40°54.37′W in 3713 m of water. The site lies in the northeast part of Dove Basin in a ~1 km thick contourite drift and is situated at Shotpoint 4900 on Multichannel Seismic (MCS) Reflection Profile...
Conference Paper
This presentation will inform about the latest optimisations in marine sedimentary ancient DNA (sedaDNA) research, and detail applications of this emerging paleo-monitoring tool to the Antarctic environment for the reconstruction of this polar marine ecosystem over thousands of years. sedaDNA research has become increasingly applied to reconstruct...
Preprint
Full-text available
Harmful algal blooms (HABs) have significantly impacted the seafood industry along the Tasmanian east coast over the past three decades, and are expected to change in frequency and magnitude due to climate change induced changing oceanographic conditions. To investigate the long-term history of regional HABs, a combination of palynological and sedi...
Article
Full-text available
Marine sedimentary ancient DNA (sedaDNA) is increasingly used to study past ocean ecosystems, however, studies have been severely limited by the very low amounts of DNA preserved in the subseafloor, and the lack of bioinformatic tools to authenticate sedaDNA in metagenomic data. We applied a hybridisation capture ‘baits’ technique to target marine...
Article
Full-text available
International Ocean Discovery Program (IODP) Expedition 382 in the Scotia Sea’s Iceberg Alley recovered among the most continuous and highest resolution stratigraphic records in the Southern Ocean near Antarctica spanning the last 3.3 Myr. Sites drilled in Dove Basin (U1536/U1537) have well‐resolved magnetostratigraphy and a strong imprint of orbit...
Article
Full-text available
Scotia Sea and the Drake Passage is key towards understanding the development of modern oceanic circulation patterns and their implications for ice sheet growth and decay. The sedimentary record of the southern Scotia Sea basins documents the regional tectonic, oceanographic and climatic evolution since the Eocene. However, a lack of accurate age e...
Preprint
Full-text available
Marine sedimentary ancient DNA ( sed aDNA) is increasingly used to study past ocean ecosystems, however, studies have been severely limited by the very low amounts of DNA preserved in the subseafloor, and the lack of bioinformatic tools to authenticate sed aDNA in metagenomic data. We applied a hybridisation capture ‘baits’ technique to target mari...
Conference Paper
The study of ancient DNA from sediments (sedaDNA) is a new tool to characterise past marine ecosystems from deep ocean sediments, and has great potential for paleoclimate research. Recent improvements in ship-board sediment coring procedures have allowed far greater levels of contamination control and, along with refinements in sedaDNA sample proce...
Article
Full-text available
Sedimentary ancient DNA (sedaDNA) offers a novel approach to investigating past marine ecosystems—from the smallest bacteria to phytoplankton and their predators— over geological timescales. Knowledge about such paleo-food webs can provide broad-scale biological context to paleoceanographic and environmental reconstructions. However, the field of m...
Article
Full-text available
Marine sedimentary ancient DNA (sedaDNA) provides a powerful means to reconstruct marine palaeo‐communities across the food web. However, currently there are few optimized sedaDNA extraction protocols available to maximize the yield of small DNA fragments typical of ancient DNA (aDNA) across a broad diversity of eukaryotes. We compared seven combin...
Conference Paper
Recent International Ocean Discovery Program (IODP) drilling in the Scotia Sea’s “Iceberg Alley” at Sites U1536 and U1537 recovered stratigraphic records from the late Pliocene to the Holocene and represent some of the most continuous and highest resolution records ever recovered near Antarctica. These records have excellent magnetostratigraphy and...
Article
The study of ancient DNA (aDNA) from sediments (sedaDNA) offers great potential for paleoclimate interpretation, and has recently been applied as a tool to characterise past marine life and environments from deep ocean sediments over geological timescales. Using sedaDNA, palaeo-communities have been detected, including prokaryotes and eukaryotes th...
Article
In some previous studies, the ratio between a di-unsaturated highly branched isoprenoid (HBI) lipid termed IPSO 25 and a structurally related tri-unsaturated counterpart (HBI III) (viz. IPSO 25 /HBI III) has been used as a proxy measure of variable sea ice cover in the Antarctic owing to their production by certain sea ice algae and open water diat...
Article
Full-text available
Design Type(s) data integration objective • database creation objective Measurement Type(s) chlorophyll a Technology Type(s) high performance liquid chromotography assay • fluorometry • spectrophotometry Factor Type(s) geographic location Sample Characteristic(s) phytoplankton • Adelaide • Australia • Bunbury • City of Coffs Harbour • Coorong Lagoo...
Article
The Earth is currently experiencing climatic changes that will result in similar environmental conditions to those experienced during the mid-Pliocene (5.3–3.6 million years ago [Ma]), such as similar atmospheric CO2 concentrations, elevated sea surface temperature, and higher sea-levels due to polar ice melt. Studying the temporal distribution of...
Article
Tintinnid ciliates are an important link in marine food webs as they feed on phytoplankton and bacteria while providing nutrients to higher trophic levels. Tintinnids are known to agglutinate mineral particles or dead biogenic material such as diatom frustules to their shell-like housing (lorica), however, reasons for this agglutination remain ques...
Article
Full-text available
There have been many individual phytoplankton datasets collected across Australia since the mid 1900s, but most are unavailable to the research community. We have searched archives, contacted researchers,and scanned the primary and grey literature to collate 3,621,847 records of marine phytoplankton species from Australian waters from 1844 to the p...
Article
Full-text available
Scientific Data 3:160043 doi: 10.1038/sdata.2016.43 (2016); Published 21 Jun 2016; Updated 6 Dec 2016 A series of errors in our database were brought to our attention by readers, and have been corrected in an updated version of this database, which is accessible via the AODN at the following link: https://portal.aodn.
Article
The marine diatom Leptocylindrus is a major component of phytoplankton blooms in coastal ecosystems and upwelling regions worldwide, however, little is known about this genus in the southern hemisphere. Whilst Leptocylindrus danicus has been reported from south-eastern (SE) Australia since the 1930s, there has been neither unequivocal species ident...
Article
Full-text available
There have been many individual phytoplankton datasets collected across Australia since the mid 1900s, but most are unavailable to the research community. We have searched archives, contacted researchers, and scanned the primary and grey literature to collate 3,621,847 records of marine phytoplankton species from Australian waters from 1844 to the...
Article
Full-text available
There have been many individual phytoplankton datasets collected across Australia since the mid 1900s, but most are unavailable to the research community. We have searched archives, contacted researchers, and scanned the primary and grey literature to collate 3,621,847 records of marine phytoplankton species from Australian waters from 1844 to the...
Article
Risk perception and communication are amongst the most critical topics of our time, if governance is to be successful in helping to circumnavigate the identified complex risks and "wicked" problems. But is there significant dissent within the scientific community about the pressing global environmental issues and energy challenges? Are the related...
Article
ACCEPTED 6/2/2015. The coastline of Australia spans tropical to temperate latitudes and encompasses a highly diverse phytoplankton community. Yet little is known about environmental driving forces of compositional and distributional patterns in natural phytoplankton communities of Australia. We investigate the relationships of phytoplankton (pico-...
Article
Full-text available
Strengths of numerical relationships between phytoplankton abundance estimates made by microscopy and CHEMTAX have often been tested using regression analysis. To specifically test agreement, where data points lie along a line of equality, the Bland and Altman technique is commonly used in the medical literature and applied here to phytoplankton an...

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Projects

Projects (3)
Project
Determining relationships between phytoplankton abundance/composition and oceanography of the Coffs Harbour region (30S), tropical transition zone, Eastern Australia.