Showing posts with label phosphorus. Show all posts
Showing posts with label phosphorus. Show all posts

Friday, 8 November 2013

From Nairn to San Diego... CEH lake restoration research hits the road

Details of CEH lake research were presented at an international conference last week by one of our former PhD students:

Dr Sebastian Meis presented results of his PhD study at the 33rd International Symposium of the North American Lake Management Society (NALMS: 30 October - 3 November 2013) in San Diego, USA. In his presentation, entitled "Seasonal responses of physicochemical and biological variables following disruption of internal phosphorus loading using lanthanum-modified bentonite clay (Phoslock®): insights from laboratory and whole lake experiments", he highlighted the major findings of the whole lake manipulation study conducted at Loch Flemington (Nairn, UK) by CEH.

The conference focused on measures for in-lake phosphorus control available to lake managers, with various presentations focusing on the use of alum, oxygenation / aeration and de-stratification as possible management tools. Conference attendees included scientists, lake managers, consultancies, as well as companies. Dr Meis was also invited to present at an additional special session on the use of geo-engineering approaches for phosphorus management in lakes, where he highlighted the need for greater accuracy when estimating product dose at the site specific scale.

Dr Bryan Spears, a co-author on the talk and Sebastian's supervisor during his PhD, writes:

"It's great to see the importance of Seb's work being recognised through his invitation to present at the special session. Geo-engineering is being increasingly used for the control of phosphorus and eutrophication in lakes. CEH's role as an independent research organisation in informing water managers on issues associated with this approach is critical. Seb's recent work has provided scientific evidence with which decisions on the wide-scale use of this approach can be based.

This work has produced guidance on estimating effective dose of products and the identification of potential unintended chemical and ecological consequences associated with product application. Seb's results are being used to inform industry and environmental regulators on the wider use of this approach."

Sebastian Meis (right) at the NALMS conference in San Diego.


Additional information


NALMS Conference

UK Lake Restoration

Loch Flemington case study

Bryan Spears CEH staff page & ResearchGate profile

Friday, 27 September 2013

British birds, pollinators and penguin poo - paperblog 7

In the latest edition of the CEH paperblog, we first highlight a recent PLoS ONE paper that involved researchers from Anglia Ruskin University and Dr Shelley Hinsley of CEH in a ten-year study of British birds, and how weather interacts with habitat to determine breeding success. The Cambridgeshire-focused study discovered that birds breeding in urban areas are better able to cope during unusually cold and wet weather, because they are less reliant on a single food source for feeding their chicks. The study compared 2012 - with its notable weather, including a cold and wet spring and lower than average temperatures - to the previous nine years.

Over the whole ten years of the study, birds living in the traditional woodland habitat had fared significantly better and produced larger and healthier broods than their city cousins. However, if extreme weather events become more commonplace due to the effects of climate change, then those birds living in urban environments may ultimately have the advantage. The PLoS ONE paper is open access.

Staying with PLoS ONE, and open access, a study led by Professor Hui Wang of CEH has used new technology to investigate viruses such as varroa destructor virus in honeybees and bumblebees. The results, from a small field trial, show how the use of Next Generation Sequencing (NGS) technology can help understand virus infections in key pollinating insects, with novel observations even from a small sample size. Such technology has potentially interesting applications in ecological and environmental science.

A new paper in the Journal of Applied Ecology also looks at pollinators and other invertebrates that provide important ecosystem services crucial to crop production. A team of researchers led by CEH mapped the distribution of species richness and functional diversity for ground beetles which are important in the delivery of natural pest control and for bees, important for pollination. Understanding national patterns can help to promote more effective crop management and contribute to longer-term food security.

Next, penguins are under the spotlight in a new paper in Atmospheric Environment. The emissions from remote seabird colonies often represent the main source of atmospheric nitrogen into surrounding ecosystems, and can provide useful case studies for scientists investigating nitrogen cycling and emission processes. However before this study no field-based estimates of ammonia emissions from penguin colonies had been published. Data was collected from seven locations around an Adelie penguin colony in the Antarctic and three different atmospheric dispersion models were used to derive the first field-based emission estimates of a penguin colony.  The researchers, including Sim Tang and Mark Sutton of CEH, estimate that 2% of the nitrogen excreted by the penguins is emitted as ammonia.

Finally, a featured article in the Journal of Environmental Quality led by Prof Andrew Sharpley (University of Arkansas) and involving Helen Jarvie, Bryan Spears and Linda May of CEH, used long-term monitoring data from a range of case studies (including CEH's Loch Leven and River Lambourn sites) to demonstrate the timelines and processes associated with recovery of water quality following phosphorus reduction measures. The team reported recovery times ranging from years to centuries across terrestrial and aquatic ecosystems. Read more in the open access paper and more background in a CEH news story.

Paulette Burns, Media Coordinator

Additional information


If you'd like a fuller picture of new papers from CEH, just follow the CEH Paper Alerts Twitter feed, which lists CEH peer-reviewed papers newly published online. Full details of Centre for Ecology & Hydrology science publications, including those published in peer-reviewed science journals, are eventually catalogued on the NERC Open Research Archive (NORA).

Those of you who follow the scientific literature will know some journal websites require registration and some are subscription-only. CEH, as part of NERC, is working with publishers and funders to make more of our output open access, and we have indicated above where this is the case.

We also publish lots of our other outputs including biological records atlases and project reports. More details can be found in the publications section of the CEH website.

Wednesday, 24 April 2013

Communicating CEH Lake Restoration research – we’re speaking the same language!

In the UK we take it for granted that our work will be presented in English. However, presenting our work in English does not always allow us to reach the widest possible audience. This was all too apparent to two PhD students based at CEH’s Edinburgh site who realised that they could increase the exposure of their work by attending conferences in their home countries (Germany and Poland) and presenting their work in their native languages. As the students highlight to us below, this has been an enlightening and rewarding process.

The workshop “Lake remediation – Experiences and new challenges (Seentherapie - Erfahrungen und neue Herausforderungen) organized by the IGB Leibniz-Institute of Freshwater Ecology and Inland Fisheries (Germany) in March 2013 offered the opportunity to exchange and discuss experiences in the expanding field of lake remediation measures between experts from consultancies, agencies and scientists. Sebastian Meis presented the findings of his PhD study on the use of a phosphorus (P) binding and P-capping agent for sediment P-release management in shallow lakes in the session “Eutrophication control measures” (“Technische Maßnahmen zur Verminderung der Eutrophierung”).
 

Delegates at the Lake remediation workshop organised by the IGB Leibniz-
Institute of Freshwater Ecology and Inland Fisheries in Germany in March 2013

Sebastian said, “This was a great opportunity to present my work in my native language, and to increase the exposure of CEH research more widely. The feedback on our work was very positive and I learned that similar projects are being conducted at a relatively large scale in Germany as part of the EU Water Framework Directive.”   

Whilst in Gdansk, Poland, Justyna Olszewska was giving an invited lecture on CEH’s research on lake restoration to the Gdansk Water Foundation, in Polish. The Foundation organises seminars focusing on the "hot" topics in the field, and given 2013 was officially nominated “Lake Year" by the Marshal Office of Pomerania Region, this seminar was devoted to the subject of lake restoration.

Justyna said, “Introducing CEH’s lake restoration research in Polish was a very interesting experience. It allowed me to compare the results of restoration work conducted in the UK with the Polish experiences in this area. It was great to discuss management issues with Polish scientists and local authorities and we now have a much better appreciation of the problems shared by both countries.

"Being a native speaker was definitely helpful, both during the presentation and discussions, but also during the social events. What was evident was that literal translation of scientific terminology is not always possible, or clear, and that follow-up discussions are important for ensuring that the scientific content is properly communicated. In addition, gaining general knowledge of the environmental problems in my home country has helped me put my work in Scotland into the wider context.“

Dr Bryan Spears of CEH, supervisor of both Sebastian and Justyna, said, “I thought it was really impressive that Justyna and Seb wanted to present at these meetings in their own language. From the feedback we have had from both meetings it has clearly helped fuel debate and increase interest in our work.”

Copies of both presentations can be viewed at the following links:

Related CEH links

CEH 's UK Lake Restoration research

Staff page of Dr Bryan Spears

Thanks to Sebastian Meis and Justyna Olszewska

Wednesday, 20 February 2013

Nitrogen narratives in Nairobi – confessions of a reluctant blogger


Professor Mark Sutton from CEH has been in Nairobi, Kenya, this week at the United Nations Environment Programme Governing Council. Here he reports back on experiencing life at the sharp end of the science-policy debate.

Here you find a reluctant blogger. I am currently writing this late at night, after a day full of meeting people of so many nations, many disciplines and many roles.

Half the day has been spent talking - trying to better understand what makes people tick, understanding why they hold their positions. Half the day has been spent talking to press colleagues, and lining up interviews with various newspapers, radio and TV channels - often by mobile phone. Not all of these interviews will come off, but a fraction will, and through them we can reach a much wider audience than our scientific papers and reports. The other half of the day has been spent reading and writing emails, trying to keep up with everything that is going past. (All of this would not have been possible without the great support from UNEP colleagues in DEPI, DCPI and DEWA divisions).

As you can see my maths does not add up –  but you hopefully get the right impression.

In fact impressions are everything here. As a scientist one can spend a long time designing experiments, collecting and interpreting data - refining the message for a scientific audience. But here I am, at the Governing Council of the United Nations Environment Programme (UNEP) in Nairobi. 1000 delegates have joined together to address environmental issues, to review the UNEP programme of work, and even make a few decisions about how to manage the planet's environment better.

So, what about making impressions. My point is that the delegates present here are nothing like a scientific audience. Peer review, statistics, lovely data series, and even new conceptual paradigms, don’t count for much around here. As several people here have commented, by far the strongest thing is "the narrative". Yes, it's great to have the scientific data and the evidence in the background [and really it is VERY important!]. But the thing that grabs their attention is a good story, where we simplify our science to its barest essence, turning complexity into something that everyone can understand.

This seems to be my job for the week. I am here to launch a report, "Our Nutrient World", commissioned by UNEP. It's about "the challenge to produce more food and energy with less pollution". We need nutrients, like nitrogen and phosphorus, to make crops grow and feed the world. The problem is that most of these nutrients leak out to the environment, weaving a web of air, water and soil pollution, contributing to climate change and threatening biodiversity. So let's manage nutrients better, let's think about a suitable goal, and let's get people talking.

In fact we have 10 key actions in our pack of options, from farming management techniques and sewage treatment to the ambition to recapture NOx (nitrogen oxides) into useful products.

But not many people want to talk about smart manure spreading. So I focus on what people do want to talk about. And that is food. In a way it's their call.

Throughout the week I’ve been highlighting the fact that 80% of the harvested nitrogen in the world ends up feeding livestock rather than people, that Europeans eat 70% more protein than needed for a healthy diet, and that, for many of us on the planet, we live in a world of "food luxury" rather than struggling to maintain a minimum "food security".

It’s a great discussion for dinner and just about anywhere you like. And before you know it, the horse-meat scandal has become linked up with nutrient management. People are thinking about their food choices. We have the demitarian option on the table, and the journalists and radio producers want to hear about it.

So it seems somewhat ironic when a lunchtime radio presenter says that: surely I am speaking to the wrong audience. Surely the team from "Our Nutrient World" should instead have been making recommendations to farmers...

And, of course we are.  But if we had only done that, then no one would have been listening. The food debate has given nitrogen an opening - and a chance to explain what we can do about this pan-dimensional problem.

It’s a challenge that crosses all global change issues. We need nitrogen, but we need to manage it better. And really: every citizen needs to know nitrogen. Because until they do, the politicians will not be empowered to make decisions, and start taking the local, national and intergovernmental conversation to the next stage.

Additional information

Prof. Mark Sutton is the lead author on Our Nutrient World - The challenge to produce more food and energy with less pollution. The report is a global overview of nutrient management and was published on 18 February 2013.

Mark was also lead researcher on the European Nitrogen Assessment published in April 2011.

UNEP 1st Universal Session of the Governing Council / Global Ministerial Forum, Nairobi, 18-22 Feb 2013