The Arctic is warming at rates more than twice the global average, and much larger changes are projected for high northern latitudes by the end of this century. In our project we study freshwater microbiology to identify sentinel microbiome properties of northern freshwater environments that can be used to improve surveillance of Arctic ecosystem health in the face of these increasing climate perturbations. The project is funded by funded by a UK-Canadian partnership bursary and in collaboration with researchers from Laval University and Centre for Northern Studies (CEN) – and is part of Sentinel North.
Of particular importance are cyanobacteria, also known as blue-green algae, as they are keystone primary producers, contributors of bioavailable nitrogen, drivers of food webs and carbon cycling in Arctic freshwater ecosystems. However, little is known about their biodiversity in the Canadian Arctic. I therefore, visited Canada this August to carry out field work and collect samples from freshwater environments such as lakes, ponds and streams to carry out DNA sequencing analysis of the freshwater microbiology.
Jan Beccaloni, Curator of Arachnida was with host David Urry to show you some spidery specimens. From their ‘scary movement’ and the impacts of climate change on the species being found in Britain through to the dancing of the peacock spiders, Jan was on hand to answer questions about the world of web slingers during the latest #NHM_Live.
Having discovered spiders are amazing, not terrifying, next week we’ll be bringing out the (really) big fish with Emma Bernard, Curator of Fossil Fish, so join us on Facebook or Twitter at 12.30 BST on Thu 10 Aug for our next episode of #NHM_Live.
If you are enjoying #NHM_Live, please leave us a review on iTunes because it really helps others to find the podcast.
P.S. Follow @NHM_Arachnida on Twitter for more about spiders and other arachnids.
Seaweed scientist Professor Juliet Brodie tells us about the fantastic photos submitted through the Big Seaweed Search so far.
I’m fascinated by seaweeds and my research includes finding out about their diversity, and the impact of climate change and ocean acidification on their distribution. As part of this, I worked with my colleagues across the Museum to set up the Big Seaweed Search and I’m so pleased to see that lots of you have taken part and have sent your photos in for my research. I’ve just been exploring the first few months of data entered and I’m very excited by what I have seen so far.
In particular, the photographs people have uploaded are excellent as they enable me to tell very quickly whether a seaweed has been identified correctly or not – this is essential for me to be able to use the observations in my research.
Guest blog by Liz Duffel, Georeferencing Digitiser
Most specimens within the Museum collection have locality information, showing where the specimen was found, on the accompanying label(s). When we are digitising our specimens, we can use that locality information for georeferencing – the process used to give the locality of a specimen geographical coordinates, so that it can be plotted on a map.
This is important because it allows for mapping and modelling, which underpins research on anything from species distributions and relationships, to environmental changes or targeting conservation practices.
Earlier this month one of our long term visitors Prof John Murray published a paper with Elisabeth Alve outlining the distribution of Foraminifera in NW European Fjords. The main purpose was to provide a baseline for assessing man’s impact on the environment.
Read on to hear how Prof Murray used our microfossil library and collections to support their observations and investigate other factors that could control the distribution of these important environmental indicators.
Elphidium williamsoni Haynes, 1973 is a foraminiferal species that has been used extensively in relative sea level and climate change studies, as it is characteristic of intertidal zones. Identifying this and other species of Elphidium has proven difficult because key morphological characteristics show a wide range of variation causing widespread confusion in determinations.
A study led by University of St Andrews PhD student Angela Roberts and recently published in the Journal PloSOne, has gone a long way to clearly define this important foraminiferal species. The study is based on measurements from Museum type specimens as well as genetic studies on contemporary material collected from the same location as the type specimens.
The Orchid Observers project is closing at the end of July (so if you can help us out with the last few classifications then you have just a few days left!). We’d like to say a huge thank you to all of the volunteers who photographed orchids, identified photos online or transcribed and classified our museum specimens. Your time, expertise and enthusiasm is really valued, so thanks for being part of the Orchid Observers team.
The project had two main research questions:
Firstly, the climate science research: Are orchid flowering times being affected by climate change?
Secondly, the social science research: How do volunteers interact and share ideas and knowledge with one another, within a project that combines both outdoor and online activities?
The second question was of particular interest to our funders, the Arts and Humanities Research Council. We are asking all Orchid Observers volunteers to answer a short survey to help us address the second question, so keep an eye out for that coming soon. Here I’ll update you on the science research outcomes and how we are analysing the data you’ve collected.