Category Archives: ARAMACC Science

ARAMACC at ISC2016 Portland

ARAMACC at Portland 2

Here’s ARAMACC opposite the hotel where the 4th International Sclerochronology Conference (ISC2016) was held earlier this month.  We can all be proud of the significant contribution that ARAMACC made;  about 25% of all talks and posters were by ARAMACC ESRs or their supervisors or people formally associated with ARAMACC.  The contingent from outside the US was overwhelmingly dominated by ARAMACC people.

Some of us were giving our first talks at a major international conference, and having done a practice session beforehand, they all went pretty well.  Question time was by no means easy, but we dealt with them well, and if there was a prize for feistiness it would go to Maria with a spirited defence of modelling that I certainly won’t forget in a hurry.  In the realm of real prizes, congratulations to Tamara who got an award for her poster.  You’ll find lots of pictures from the conference on the Sclerochronology Facebook page.

Thanks especially to Al Wanamaker who organised the conference in spite of living and working 2000 kilometres away in Iowa. I know it was a tough assignment, and while the venue was excellent and we were all comfortable there, it was undoubtedly very expensive.

Looking to the future, the next sclero conference in 2019 will be organised by one of our own – Melita Peharda from Split has taken up the baton.  All of us who have been there know it’s a beautiful venue and I hope over the next three years we can all play a part in making ISC2019 a great success!

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Melita Peharda announces ISC2019

 

 

 

Split workshop: Numerical modelling

Odd Helge Fabian Li Juan copy

Fabian, Juan and Li with Odd Helge Otterå

Numerical modelling of climate and the oceans is a complex field, and making linkages between outputs from multiple disparate models and the data we have been working up during ARAMACC is by no means straightforward.  Where the models are similar to our data, what does that mean?  How can we use those similarities to test the models or to validate our data?  I hope we moved a little bit in the right direction during the modelling part of the workshop.  Difficult ideas were very well explained by our team of distinguished experts in the field:

Ivica Vilibic ́on dense water formation and overturning in the Adriatic; Paul Halloran with a very clear and well illustrated overview of numerical modelling followed by an introduction to the intricacies of biogeochemical modelling;  Odd Helge Ottera on how to deal with decadal variability in global ocean models can be used to address decadal variability; and the workshop ended with Eduardo Zorita covering global climate models, focusing on the climate of the last millennium.

We did also find time to take a look at our data, and found some very close and interesting connections between shell growth and some of the models.

 

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Stella, Carin and Paul Halloran

Stef Eduardo Melita

Eduardo chatting with Melita and Stef (and I think that’s Maria next to Stef, but please tell me if I’m wrong!)

 

ARAMACC Summer School #2 at Split, Croatia 9-13 May

In a little more than a month, we’ll be joining Melita and Ariadna in Croatia for the second ARAMACC Summer School, held at the Institute of Oceanography and Fisheries in Split.  As you’ll see from the pictures below, the Institute has found a prime situation for itself right at the end of the promontory with stunning views across the bay to the offshore islands.  Right, that’s the end of the travelogue – now skip past the pictures for what we’ll be doing.

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As before, there will be two parts to this summer school, a sclero-specific part and a workshop on general skills associated with research.

The sclero-specific part this time focuses on “Sclerochronology and Numerical Modelling”; we’ll be discussing how to use sclerochronological time series as a tool for constraining and validating numerical climate models.  Trainers will be two experienced climate modellers from within ARAMACC, Eduardo Zorita from the Institute of Coastal Research and Odd Helge Otterå from the Bjerknes Centre for Climate Research in Bergen.  We will also welcome as guest trainers Paul Halloran from University of Exeter (Paul is the supervisor of Sarah Holmes who you met at NIOZ) and Ivica Vilibić, a physical oceanography expert who is based at IOF.

Our general workshop is about “Dissemination, Communication and Public Outreach”.  This aspect is increasingly important with the plethora of communication tools now available, and communication of science has moved a long way from the old model, with publication of results in blogs and open access journals making publication a much more fluid and interactive process than it used to be.

We’ll discuss the wide range of media that are now available for communication of science, presentation of science at outreach events, presentations to general non-specialist audiences and the importance of ensuring public access to data as soon as possible after publication.  Trainers from within ARAMACC will include our host Melita Peharda, James Scourse with his famous presentation on the various Ming controversies, Michael Carroll from Akvaplan-niva, and myself (yes, really!!) on the use of social media and, I hope, Eduardo again talking about the blog he is involved with, Die Klimazwiebal.  Our guest trainer will be Ana Bedalov who organizes the annual Researchers’ Nights in Split (see 20 seconds into the clip).  In addition, Carin will be joining us from Bergen to help with all parts of the workshop.

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Outline of programme

Below is the outline schedule for the various parts of the Summer School and the main people involved in each part.  Dissemination in green, modelling in orange, presentations in blue.  Carin, Melita and myself will also be around for the week to assist as required

 

Monday 9/5 morning         

Writing a press release, led by James

Monday 9/5  afternoon

Talk by Paul Halloran on epistemological questions about modelling

Presentations of their own records by Amy, Fabian, Tamara, Stella and Juan

 

Tuesday 10/5

Ivica Vilibić on regional ocean models

Model-proxy comparisons using students’ data
 

 

Wednesday 11/5 morning 

Odd Helge on global ocean models and decadal variability

Eduardo on global climate models and climate iof the past millennium

Wednesday 11/5 afternoon

Interactive exercises using the press release

Talk by Ana Bedalov 

 

Thursday 12/5 morning      

Science communication horror stories (James on Ming and Michael on the Bermuda Triangle)

More interactive exercises

 

Thursday 12/5 afternoon

More interactive exercises

Social media (led by Paul B, Michael and Eduardo)

 

Friday 13/5 all day    

Student Presentations (led by Melita)

Each student will give two short presentations:

(i) focusing on the administration side, presenting your strategy for completing your PhD

(ii) focusing on the science, presenting a first version of your talk for Portland for discussion and a short overview of any other findings.

 

Looking forward to another exciting week!

Paul

Cockle picking on the tidal flats

Wednesday 28th October.  Day 3: Rob Witbaard and Chris Richardson led the group in some practical fieldwork investigating variability of shellfish distribution.  We took advantage of some decent weather to step out of the classroom to a nearby tidal flat where we collected cockles along three 300 metre transects then took them back to the lab to measure them and assess the length frequency distribution along the transects.

Cockle Group 2

Ready for action!

 

Chris and quadrat

Chris shows Irene and Ariadna how to randomly position a quadrat then hold it in position in the mud

 

Sieving cockles

Sarah and Juliane sieve some chunks of mud …

 

Cockles out of the ooze

… and slowly the cockles emerge out of the primeval slime

 

A luverly bag of cockles

“I’ve got a luverly bag of cockles”
Tamara (with fork), Rob (with quadrat), Stella (with scarf and wellies) and Chris (proudly displaying his cockles) after a good days work

 

 

 

 

 

 

 

 

Cockle density plot

We even got some results. Density increased strongly towards low water, but there was a sudden cutoff at the edge of the intertidal zone, perhaps because the sediment became more sandy.

 

 

 

 

 

 

 

 

Cooked cockles

But in the end you just have to cook your fieldwork ….

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cockles on table

… and eat it !

 

 

 

 

 

 

Welcome to the Texel workshop

Posted by Paul

De Slufter, incoming saltwater through the dunes.

De Slufter, incoming saltwater through the dunes. Photo by Hans J.S.C. Jongstra

The next ARAMACC training event isn’t just a workshop.  It isn’t even a double workshop.  This time we are offering us a TRIPLE workshop featuring “Ecology of long-lived bivalves”, “Attracting funding” and “Introduction to R”.  With Rob Witbaard leading, this will take place at the world-famous Netherlands Institute of Sea Research (NIOZ) on the breezy and bracing North Sea resort island of Texel.  With this workshop happening in the last week of October, it could well be exceptionally breezy!

The workshop takes us from the welcome dinner on Sunday 25th through to Friday 30th October – or the following Monday for those who are braving the optional “R” workshop: the full schedule is here.

The workshops will feature some exciting and distinguished guests:

40f31b1eea426b60618702ea81201331Dr Bryan Black from University of Texas at Austin, dendrochronologist, sclerochronologist and proven expert in the integration of ecological variables to build multicentennial climate reconstructions.  Bryan will be introducing us to the use of multivariate analysis in ecology and leading an exercise in the application of multivariate methods to existing datasets.

 

 

DavidReynolds

Dr David Reynolds from the School of Earth and Ocean Sciences at Cardiff, who is currently aiming to publish the first 1,000-year annually resolved marine temperature record and who has just obtained funding from NERC for a pan-Atlantic sclerochronology project (CLAM – Climate of the LAst Millennium).  David will be contributing to the grant capture workshop.

 

img_2647-lavaleyeDr Marc Lavaleye, a specialist in the ecology of cold water coral reefs, will give the keynote talk at the start of the workshop on Monday.

 

 

 

 

In addition some of the ARAMACC regulars will be offering their expertise, with Julian introducing us to taxonomy and bivalve identification (useful as I suspect some of us can only identify about two species), while Chris, Paul and Rob will describe their experiences obtaining – or more often failiong to obtain – grant funding.  We’ll also – I hope (weather permitting) – get out of the classroom, when Rob takes us to sample Cerastoderma on the tidal flat.

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NIOZ and the Texel ferry port

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A change in the weather and a change of scenery

Glycymeris PB

Glycymeris glycymeris from Faroes Bank. Picture: Paul Butler

Morning of 13th November:  Continuing our shells collection cruise, our next site, a little further south on the Faroes Bank, came up with another surprise: hundreds of live collected specimens of Glycymeris glycymeris.  We know this species (which can live up to 200 years) from St Kilda, the west coats of Scotland and points south, but we weren’t expecting to find it this far west in the north Atlantic and as far as I know it has not been found elsewhere in the Faroes.

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Heavy weather between the Faroes and Viking Bank. Picture: Paul Butler

Shortly afterwards, the weather began to turn, and in the light of predicted bad weather around the Faroes, we decided to head across to our other main area of interest, where we were planning to collect shells for Tamara.  This was Viking Bank in the northern North Sea/Norwegian Sea.  Tamara and Rob planned a full 80 potential stations in three separate areas.  Winds reached force 8 on the journey across to Viking Bank, and we were thankful for the relative stability of GO Sars.  At a session of presentations in the ship’s seminar room, we got a bit of detail about the very promising progress with the ARAMACC projects.

However, when we resumed dredging earlier this morning, the first tow on Viking Bank turned up nothing except a few chunks of mud.

Evening of 14th November:  We’ve worked on two main sites on Viking Bank with variable success.  Modern Arctica islandica here are small compared with specimens from earlier in the Holocene.  This may reflect sea level rise in the area: early Holocene specimens, living when large parts of the North Sea were still dry land, would have been living in coastal environments, with more nutrients, and were therefore able to grow faster than is possible nowadays.  These older shells have the kind of size and thickness that we see nowadays in Arctica from around the UK coast.

While some trawls turned up the older shells in large numbers, more recent specimens, and especially the live animals that Tamara was most interested in seemed to be more elusive.  A small adjustment to the connection between the winch and the dredge may have had the effect of allowing the dredge to dig deeper into the sediment, and the final trawl of the afternoon shift produced about 30 live clams.