基本信息
views: 19
Career Trajectory
Bio
Despite being microscopic and made from single cells, diatoms are vital for life on earth. Together with other organisms such as sponges, diatoms - photosynthetic algae - make their ornate skeletons from glass-like silica called biogenic opal. Marine diatoms dominate the removal of dissolved silicon (Si) from seawater and contribute to nearly half of the carbon sinking from surface to deep waters, which is a key process responsible for variations in atmospheric carbon dioxide. Diatoms are also used in industry and are a focus of nanotechnology research into optical systems, semiconductors, and for use in medicine.
However, there is much that we still have to learn about how diatoms produce biogenic opal.
My first major aim is to understand how dissolved Si is taken up by diatoms (and sponges) by investigating how these organisms take up different forms or isotopes of Si. There are naturally three Si isotopes with atomic masses of 28, 39 and 30. During growth, diatoms and sponges are selective in the form of Si they take up, preferring the lighter isotope. But the exact processes that control this fractionation are, as yet, unknown.
My second aim is to use the chemistry of biogenic opal to investigate the changes in the marine cycling of silicon at important times of climate change, such as the end of the last ice age around 15 thousand years ago. I was one of the first to show that the Si isotope composition of sponges provides an archive of dissolved Si in the waters in which they grow. This provides us with a unique way of recording marine Si cycling back in time and in waters that can be kilometres deep – the realm of deep sea sponges. I can use these records together with Si isotopes of diatoms, which tells how much of the silicon that reaches the surface is used up by the siliceous algae. This means that, for the first time, we have a handle on the whole silicon cycle - both inputs and outputs - and so on the amount of carbon absorbed.
Research Interests
Papers共 148 篇Author StatisticsCo-AuthorSimilar Experts
By YearBy Citation主题筛选期刊级别筛选合作者筛选合作机构筛选
时间
引用量
主题
期刊级别
合作者
合作机构
Hong Chin Ng,Katharine R. Hendry,Rachael Ward, E. M. S. Woodward,Melanie J. Leng,Rebecca A. Pickering,Jeffrey W. Krause
GEOPHYSICAL RESEARCH LETTERSno. 12 (2024): n/a-n/a
Geraint A. Tarling,Sally E. Thorpe,Sian F. Henley, Amanda Burson,Cecilia M. Liszka,Clara Manno, Natasha S. Lucas, Freyja Ward,Katharine R. Hendry,E. Malcolm S. Woodward,Marianne Wootton,E. Povl Abrahamsen
Progress in Oceanographypp.103297, (2024)
Marine drugsno. 4 (2023): 214-214
Ben Fisher,Katharine Hendry,Gillian Damerell,Chelsey A. Baker, Millie Goddard-Dwyer, Siddhi Joshi, Alice Marzocchi,Anna Nousek-McGregor,Carol Robinson, Katie R. Sieradzan,Alessandro Tagliabue,Katrien Van Landeghem
Anna Belcher,Sian Henley,Katharine Hendry,Marianne Wootton, Lisa Friberg, Ursula Dallman, Tong Wang,Clara Manno
crossref(2023)
Johan C. Faust,Philippa Ascough,Robert G. Hilton,Mark A. Stevenson,Katharine R. Hendry, Christian Maerz
ENVIRONMENTAL RESEARCH LETTERSno. 1 (2023)
Hugh Venables,Michael P. Meredith,Katharine R. Hendry,Petra ten Hoopen,Helen Peat, Alice Chapman,Jennifer Beaumont, Rayner Piper, Andrew J. Miller,Paul Mann,Helen Rossetti, Ali Massey,
CONTINENTAL SHELF RESEARCH (2023): 105126-105126
Load More
Author Statistics
Co-Author
Co-Institution
D-Core
- 合作者
- 学生
- 导师
Data Disclaimer
The page data are from open Internet sources, cooperative publishers and automatic analysis results through AI technology. We do not make any commitments and guarantees for the validity, accuracy, correctness, reliability, completeness and timeliness of the page data. If you have any questions, please contact us by email: report@aminer.cn