27 March 2015,
I’m now in the enigmatic central Amazonian city of Manaus (of World Cup fame) situated where the white waters of the Rio Solimões converge with the inky black Rio Negro to form the Amazon proper. This is my third visit as part of a project in collaboration with my colleague José Albertino Rafael at the Instituto Nacional de Pesquisas da Amazônia (INPA) and our PhD student Josenir Câmara. Our Project is describing the diversity of a particular group of flies in the Amazon using classical taxonomic approaches and relating it to Global evolutionary and biogeographic patterns using, for example, emerging molecular-genetic methodology. In order to do this we first have had to travel to remote areas of the Amazon, collecting flies to be brought back to the labs in Manaus and Cardiff - where the hard work really starts.
On previous visits we have surveyed remote areas on the Rio Negro close to Venezuela, way up the Solimões along the Colombian and Peruvian borders as well as downstream in Amapa State between the mouth of the great river and French Guiana. During this visit we intend to leave the Brazilian Amazon behind and explore fly diversity in some of the upper reaches of the Amazon Basin in Ecuador. We are all keyed up and excited by the imminent prospect of getting out into the forest again and trying to anticipate some of the discoveries we might make.
Of course, we cannot really know exactly what we are going to find but our past experiences suggest that much of what we discover will be completely new. That is one of the great delights of being an entomologist in the tropics as the diversity of insects is so vast and our knowledge so sparse that exciting discoveries are virtually inevitable. You would have to walk around the Amazon with your eyes and mind closed not to find something totally and often bewilderingly novel! But for the time being we must contain our excitement as we spend our time sorting the field equipment we will take with us, pouring over maps and satellite imagery and speculating about finds we might make. I can’t wait for our flight to Quito!
26 March 2015,
The days before Friday 20th March, had staff in the Department of Natural Sciences watching the weather forecast with great attention. Friday 20th March 2015 was a really special day as we had the opportunity in Cardiff, weather permitting, to see a partial eclipse of the Sun. This does not happen very often, the next one won’t be until 12th August 2026.
On the Thursday we had a great start to the celebration by hosting an evening of talks on eclipses at the Museum. These were given by Dr Chris North, Dr Rhodri Evans, Dr Mark Hannam, astronomers and physicists from Cardiff University; and we all felt much better informed as to what we knew about the sun, why an eclipse was occurring, and what eclipses tell us about gravity. Equally important was a talk by Jenni Millard, an undergraduate student but experienced astronomer, on how to view the sun safely. Having listened intently the audience were issued with free solar eclipse viewing glasses.
Friday morning and we were in luck, a perfect sunny morning and all that worry about the weather had paid off! By 8.00 a few people had already arrived outside the Museum, by 8.20 there were many more. At 8.22 we saw the first contact of the eclipse. For a short while the sun was almost obscured by the trees in the Gorsedd Gardens, but not for long. With colleagues from Cardiff University and the Institute of Physics we provided a range of methods to view the eclipse safely. These included a solar telescope that provided the greatest detail of the sun’s surface, pinhole viewers, ranging from boxes and tubes to simple card and paper, solar viewing boxes, colanders and eclipse glasses. Most visitors had noted the warnings about safe eye protection, only a few needed reminding that two pairs of sunglasses wouldn’t do the job!
Over the 126 minutes of the eclipse from first contact of the moon until we saw the entire sun once again, over 1000 people viewed the eclipse on the Museum steps with the viewing glasses provided. In total we estimate that over this period nearly 2000 people joined the event. At one point the queue disappeared round the corner of the Museum into Park Place almost to the University! However this was a great event with a fantastic atmosphere of participation and patient queuing.
For more astronomy linked events please see Amgueddfa Cymru – National Museum Wales What’s On pages, next one is on 18th April, and for education resources check out the Museum’s partnership Down2Earth Project web site
For more information on our Eclipse 2015 activities see our Storify Story.
24 March 2015,
Last year Staff from the Departments of Natural Sciences, and Learning, Participation and Interpretation took their I Spy…Nature themed pop-up museum out into the community. This year we have been delivering I Spy…Nature related workshops throughout March as part of the I Spy…Nature Exhibition outreach programme. Workshops at National Museum Cardiff allowed members of the public to carry out fieldwork within the museum, bringing the outside in! Visitors were able to explore the miniature world of British Slugs and Snails, go pond dipping, explore a rocky shore (utilising our brand new portable 3D Rocky shore) and go worm charming with our OPAL Community Science officer. During the middle part of March, staff ran a series of school workshops both at National Museum Cardiff and within a local primary school, where pupils could explore the seafloor, Fossils and Minerals before trying their hand at scientific illustration with a local artist. The aim of these sessions was to inspire children to explore their natural environment and also to give them a chance to experience the work that museum scientists do. For British Science and Engineering Week, staff held an I Spy…Nature Open day in the main Hall at National Museum Cardiff, with a plethora of specimens from our collections and even a giant lobster, fly and squirrel!
For more information on the I Spy…Nature activities see our Storify Story.
5 March 2015,
On 19th February, I joined science curator Kate Mortimer-Jones to study marine life on the shores around Berwick-upon-Tweed in Northumberland, not far from the border with Scotland. While Kate hunted for magalonid marine bristleworms, I looked at seaweeds. Much of England’s east coast is not particularly suitable for seaweeds; however, the rocky shores around Northumberland form plenty of ideal habitats.
It was early in the year, so I wasn’t expecting to see the seaweeds that die down for the winter (similar to annual and perennial flowering plants). I was also expecting a lower diversity here when compared with Welsh shores due to the colder climate. Species with south-western distributions that prefer a relatively warmer climate, such as Brown Tuning Fork Weed (Bifurcaria bifurcata), relatively common in Wales, do not grow as far north and east as Northumberland. With climate change, however, there is always the possibility that these southern species may expand their range further north. This is more likely for non-native species that are in the process of establishing in the UK, so I was on the look-out.
There are some seaweeds that only grow in the north of the UK, such as the Northern Tooth Weed (Odonthalia dentata) which is absent from Wales. I wanted to become familiar with these in the field rather than just seeing them as pressed specimens in our collections. It’s always exciting to find a species for the first time in the wild too.
Despite the time of year and the north-eastern location, the very sheltered shore was an excellent one for seaweeds and I documented a wide range of species. While it was important to collect specimens as a permanent back-up for records and for future research, I had to remind myself not to collect too many as they take a long time to process and I didn’t want to be up until the ‘wee hours’.
Preservation of the seaweeds involves several techniques depending on future use. To preserve the seaweed’s DNA for molecular analysis, the seaweed needs to be dried as quickly as possible in a bag with silica gel. Combining DNA characters with morphological ones (such as shape and colour) is sometimes the only way to be sure of an identification. To preserve 3D structure and some microscopic details well, a sample is placed in a tube with formaldehyde for fixation. Finally, the traditional and still most effective method for overall preservation is to press and dry the specimen, unfortunately this is the most time consuming process. You float each seaweed out onto paper, place nappy liners on top (a crucial part to stop the seaweed sticking to the paper above it), then place a piece of blotting paper underneath and on top and put it into a plant press. At least once a day, I swapped the wet blotting paper for dry and made sure the wet paper dried out quickly enough to be used in the next cycle. A lengthy procedure, but worth it for excellently preserved specimens that will be invaluable for future research.
I had access to a microscope with a camera attached and so was able to take close-up images of the seaweeds while they were fresh. These will be useful when looking at dried specimens back in the museum. Characters such as colour and 3D structure can be altered in the drying process, but will show up well in these photos. I also took lots of photos with a waterproof camera (it is too terrifying to take a non-waterproof camera onto the shore!) and I will share some more of these in my next blog.
2 March 2015,
Welcome to Umberto Fiordaliso, a postgraduate student from the University of Florence who will be working at the museum for 3 months with the Erasmus Programme, which helps students to study abroad. Umberto has previous experience working on Mediterranean molluscs and will be curating the marine molluscs collected by Monterosato, part of our extensive shell collection. He will be working closely with Anna Holmes and Harriet Wood in the Invertebrate Biodiversity section to produce a published handlist on this historical collection.
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