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British Wildlife is the leading natural history magazine in the UK, providing essential reading for both enthusiast and professional naturalists and wildlife conservationists. Published eight times a year, British Wildlife bridges the gap between popular writing and scientific literature through a combination of long-form articles, regular columns and reports, book reviews and letters.

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Conservation Land Management (CLM) is a quarterly magazine that is widely regarded as essential reading for all who are involved in land management for nature conservation, across the British Isles. CLM includes long-form articles, events listings, publication reviews, new product information and updates, reports of conferences and letters.

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Academic & Professional Books  Earth System Sciences  Geosphere  Geophysics & Geochemistry

Nitrogen Isotopes in Deep Time

By: Colin Mettam(Author), Aubrey L Zerkle(Author)
75 pages
Nitrogen Isotopes in Deep Time
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  • Nitrogen Isotopes in Deep Time ISBN: 9781108810708 Paperback Feb 2021 Not in stock: Usually dispatched within 6 days
Price: £14.99
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About this book

Nitrogen is an essential nutrient for life, and its sources and cycling have varied over earth history. Stable isotope ratios of nitrogen compounds (expressed as 15N, in ‰) are preserved in the sedimentary record and track these changes, providing important insights into associated biogeochemical feedbacks. Here we review the use of nitrogen stable isotope geochemistry in unravelling the evolution of the global N cycle in deep time. We highlight difficulties with preservation, unambiguous interpretations, and local versus global effects. We end with several case studies illustrating how depositional and stratigraphic context is crucial in reliably interpreting δ15N records in ancient marine sediments, both in ancient anoxic (Archean) and more recent well oxygenated (Phanerozoic) environments.


1. Introduction – Nitrogen in life
2. The δ15N proxy in a nutshell
3. Methods and limitations
4. Case studies
5. Future perspectives.

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By: Colin Mettam(Author), Aubrey L Zerkle(Author)
75 pages
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