Biosciences Seminar Speaker - 07 November 2013

Biosciences Seminar Series - Michaelmas 2013
07 November 2013 - 1pm - Zoology Museum (Wallace 129)

(please note change of date due to strike action on October 31st)

The more the merrier? 

When, where and why does biodiversity matter for ecosystems.

Dr. John Griffin 

(University of Swansea, UK)

Downloaded from: http://www.vliz.be/wiki/Predicted_biodiversity_changes_in_the_Mediterranean_Sea

This week we go local! I mean, our seminar speaker this week will be Dr. John Griffin, lecturer at our Biosciences Department. John's research, though, is 'well-travelled' as his study sites range from rock pools on Welsh coasts, to seagrass system in the southern US, to high-altitude sites in Tibet.

Underlying this diversity of study sites is one common question - how does biodiversity change due to human influences and how does this affect the structure and services provided by ecosystems to humans? Whilst this is an important and urgent question under current global change, it has however proven difficult to drive generally applicable conclusions. John might, however, have found a solution:


Abstract:
Variety is the spice of life, right? Unfortunately, human activities are reducing this variety by driving local and even global species extinction. I am interested in how such changes to the diversity of organisms will influence how ecosystems function, and ultimately the quality and quantity of services provided to humans. 

Diversity in ecological communities can be considered in two simple dimensions – horizontal (the diversity of species sharing resources within a trophic level) and vertical (the number of trophic levels within a system). Using field and laboratory experiments based on a range of different ecosystems – from rocky shores to Tibetan alpine meadows – I investigate the importance of both these dimensions of diversity. 

I’ve found that effects of diversity on ecosystem function are (not surprisingly – this is ecology after all) highly context-dependent, varying both within and among studies. The cool thing is though, this context-dependency can be explained by considering how the traits of species interact with their environment. So, it may just be possible to predict the impacts of biodiversity changes within specific ecosystems and contexts. 

Everyone will be welcome, as usual!

Biosciences Seminar Speaker - 14 October 2013

Biosciences Seminar Series - Michaelmas 2013
14 October 2013 - 1pm - Zoology Museum (Wallace 129)

NOTE CHANGE OF DAY!

Chasing the High-fliers: 

Recent Insights from Radar Studies of Insect Migration

Dr. Jason Chapman

(Rothamsted Research, UK)

Downloaded from: http://www.pems.adfa.edu.au/~s9104004/trews/ww_re_qa.htm

How would you go about detecting and tracking little insects, such as moths, flying high up in the air at 100m height or more? Or millions of birds or bats? It turns out it is not as hopeless as it sounds, as all these organisms can be detected by radars!  Actually, the aerosphere supports an enourmous abundance of life forms and the field of aeroecology now crucially relies on the use of dedicated radar systems, such as entomological radars. 

Our next seminar speaker, Dr Jason Chapman, from the Insect Migration & Spatial Ecology group at Rothamsted Research (UK), is a well-known world expert in this field. He will present us a fascinating talk about how he and his group have used radar technologies to understand what determines the flight and migration behaviour of little moths.

Abstract:

Billions of insects migrate between winter and summer ranges to take advantage of seasonally-available breeding resources. To cover the distances required (100s km), many insects rely on wind assistance, and routinely ascend 100s m above the ground to migrate in fast-moving airstreams. Given that wind speeds are typically three to five times faster that the insects’ airspeeds, it was not clear what influence high-flying migrants could exert on their migration direction or whether substantial ‘return’ migrations to lower-latitude winter-breeding areas were possible. 

Photo provided by Jason Chapman

To answer these questions, I have studied the flight behavior and migration patterns of the Silver Y Autographa gamma and other moths with specialized entomological radars. 

Photo provided by Jason Chapman

Radar observations demonstrate that an ability to select favorably-directed airstreams (i.e. northwards in spring and southwards in autumn) is widespread among high-flying migrant Lepidoptera, and thus migrants gain considerable wind assistance for their seasonal migrations. Furthermore, moths preferentially fly at the altitude of the fastest winds, and partially compensate for wind drift away from their seasonally-preferred migration directions. 

Trajectory simulations show that these flight behaviors result in significant increases in mean nightly migration distance, and a high degree of success in reaching the next breeding region, while population monitoring indicates that high-latitude summer-breeding results in a fourfold population increase. Comparison of moth migration parameters with those of nocturnal passerine migrants demonstrates that the moths’ highly efficient strategies result in them achieving the same travel speeds and directions as birds capable of flying three times faster. 

The migration strategies employed by the study species explain how small, short-lived and relatively slow-flying organisms are able to cover great distances in seasonally-beneficial directions, and demonstrate that migration is highly adaptive.

Relevant Publications:

Chapman JW et al (2012). Seasonal migration to high latitudes results in major reproductive benefits in an insect. PNAS 109: 14924-14929.

Chilson PB, Bridge E, Frick WF, Chapman JW and Kelly JF (2012). Radar aeroecology: exploring the movements of aerial fauna through radio-wave remote sensing. Biology Letters 8: 698-701.

Alerstam T & Chapman JW et al (2011). Convergent patterns of long-distance nocturnal migration in noctuid moths and passerine birds. Proceedings of the Royal Society B 278: 3074-3080.

Chapman JW, Drake VA and Reynolds DR (2011a). Recent insights from radar studies of insect flight. Annual Review of Entomology 56: 337-356.

Chapman JW, Nesbit RL, Burgin LE, Reynolds DR, Smith AD, Middleton DR and Hill JK (2010). Flight orientation behaviors promote optimal migration trajectories in high-flying insects. Science 327: 682-685.

Everyone is welcome to attend - please do come along and again note the change of day for this week: Monday!

Science Club - 1st event

Science Club!

Science Club Meetings - Autumn 2013
Venue: Zoology Museum

Time: 1pm on Thursdays

Downloaded from: virtuallaboratory.colorado.edu (bit.ly/1fZaPNa)

No, we are not getting the BBC involved nor will we invite over Dara O Briain (sorry!). But consider, we scientists come about in all possible 'shapes and forms' (e.g. here), yet one of the things we generally all like to do is discussing about new ideas, debate the pros and cons of different theories or methods, exchange tips on where to find specific species, etc. Our aim here is then to provide a series of biweekly informal meetings that complements our departmental seminar series.

The Science Club events will be open to all graduate students and permanent researchers. There will be no prescribed format - everyone can propose to hold a journal club about a new exciting paper (or maybe tear apart an egregious clunker-paper that the illustrious high-impact journal 'put-the-name-here' has somehow just managed to publish as novel groundbreaking research ...) or present a short presentation (~20 min) about work-in-progress with the intent to generate discussions and feedback.

For example, have you just finished preparing the experimental design you will start in the next month, or have you devised the sampling design for your upcoming fieldwork in 2 months time? That's exactly the time to get some feedback from your collegues and friends! And yes, that's also for you, MSc students :-) 

Same goes for upcoming conference presentations, or a manuscript you are trying to publish but continue to get bounced off due to increasingly obscure reviewer feedback, or ... any other suggestions are welcome! Just drop me a line at l.borger (at) swansea.ac.uk.


And, we are off for a great start, thanks to Matt from the University of Sydney (Australia):

Matt (Matthew Hansen) is currently visiting our department for a month and will do some cool experiments in the CSAR facility. This coming Thursday, at 1pm, Matt will tell you about that and some other cool work he is currently doing. The title and abstracts are:

Social Foraging and Movement in Fish Shoals

Abstract

While the co-ordination of foraging movements in eusocial species are well studied, the mechanisms behind social foraging in non kin related groups lag behind. Recent technological advancements in video analysis and tracking software allow us to revisit questions raised in social foraging theory over a decade ago and test them empirically. 

My work explores social foraging and movement of small shoals of fish, and my current experiment aims to quantify how the nutritional environment affects individual and group behaviour. 

Note the date in your diaries and join the discussion! Thursday 10th October, Zoology Museum @ 1pm.

For the full list of Science Club events, see here.



[in case you wonder what the 'luca' acronym stands for in the first pic: 'Last Universal Common Ancestor']

Biosciences Seminar Speaker - 03 October 2013

Biosciences Seminar Series - Michaelmas 2013
03 October 2013 - 1pm - Zoology Museum (Wallace 129)

The Collective Behaviour of Fish Shoals

Dr. James Herbert Read (aka Teddy) 

(University of Upsala, Sweden)

Downloaded from: http://phys.org/news/2013-02-mosh-pits-panic-situations.html

OK, I know, these aren't fish shoals in this picture. However, have you ever experienced being in a human crowd, being pushed and carried away by the motion of the group? Maybe you have even experienced being in a mosh pit at rock concerts? The interesting thing is that these kinds of so-called collective behaviours share many characteristics with movements of large herds of animals, flocks of birds, or fish shoals.

Understanding how these collective behaviours emerge from individual interactions and movement rules has become a very active area of research in biology. Interestingly, many principles and methods from physics, e.g. used to study the behaviour of particles in gases, can be applied in this context (e.g. see here or here) and it is often surprising how apparently complex swarm behaviours can be produced by very simple basic principles. Even amazing anti-predator behaviours such as torus formation produced by mackerel and other fish:

Downloaded from: http://www.wired.com/wiredscience/2013/03/powers-of-swarms/all/
Photo: Christopher Swann/Science Photo Library

Which brings us straight to our seminar speaker of this week - Teddy -- sometimes known also as Dr. Herbert Read from the University of Upsala in Sweden. Teddy's research focuses on animal interactions and how these drive group level behaviours. To do so he uses fish shoals as model system to test specific predictions and obtain a mechanistic understanding. For example like this one:

Dowloaded from: https://webspace.utexas.edu/dm3947/www/Class/MNS307_11F_Blogs/Blogs12.html

Well, maybe not exactly like this one. Best thing to do - come this Thursday over lunch and find out yourself! It promises to be a very intersting talk, as you can deduce from the abstract:

Abstract:

My research investigates how animal groups can display complex and coordinated behaviours, despite each individual in the group having limited information about its neighbours and surroundings.  In particular, I focus on determining how simple, individual level rules give rise to the collective dynamics we often observe in animal groups.  

In this talk, I will show you how using highly quantitative methods to analyse the behaviour of individual fish in shoals, we can gain insights into how groups achieve coordinated movement, accurate decision making, and transfer information about threats. I will also demonstrate how individuals express their personality in groups, and show you how this research could inform and improve safety measures in human crowds. 

I will finally discuss how seemingly cooperative behaviours are in fact driven by selfish individual level rules, explaining how these behaviours evolved in groups of unrelated individuals. 

Everyone is welcome and I hope to see many of you. James will also be around in the Department on Thusrday and Friday - if you would like to have a chat with him just let me know (l.borger (at) swansea.ac.uk). 

There will be also an opportunity to meet up with our speaker over a beer - JCs at 5pm! And if you would like to join us also for a dinner in hte Mumbles area, get directly in contact with Andy King ( a.j.king (at) swansea.ac.uk).

Biosciences seminars - autumn 2013

The Trouble Will Begin at One O'Clock ...

Biosciences Seminar Series - Autumn 2013
Venue: Zoology Museum

Time: 1pm

Downloaded from: http://www.sierracollege.edu/ejournals/jsnhb/v1n3/twain.html

More than troubled we are actually quite excited - it's that time of the year again when a continuous stream of illustrious speakers will travel all their way up to Swansea to tell us about their research. And engaging they will have to be, otherwise the listeners will quickly become distracted by the museum specimen at display in the room ...

 During this autumn term we'll have six speakers from the UK and overseas - starting on October 3rd with Teddy (aka Herbert Read) from Upsala, followed by Jason Chapman from Rothamsted, our own John Griffin from Swansea, Jeanne Mortimer from the Seychelles, Alex Thornton from Exeter and finally Andy Purvis from London. Also the topics will be broad, ranging from insect migration to animal cognition and collective behaviour to biodiversity and ecosystem services.

For an updated calendar of the talks see this page here on our blog. Talks will be held generally every second Thursday at 1pm, but there will be a few time changes, hence we suggest you follow our blog (via email updates, RSS feeds, Google+, ...).

Also, several of the invited speakers will remain in Swansea for the whole day and hence there will be ample possibilities to socialize with the speakers - over a nice drink at the Pub on the Pond overlooking the boating lake:

Downloaded from: www.geograph.org.uk

... and during dinner later in the evening, most likely overlooking Swansea Bay at this place here. How to find out the exact plans for each date? Easy - just follow our blog! Every week before the talks we will post an outline of the talk, including the details of the social programme.

Ah, and if you are a graduate student in our department (Biosciences), you will get another opportunity - you will be in charge of hosting the invited speaker over lunch (no, don't worry, you won't have to pay for the speaker's meal...) and back in time to the seminar room. Let's see how many talks we will start on time ;-)

Who can attend? Everyone - Biosciences, College of Sciences and other Swansea department. Not from Uni Swansea? Get in touch with me (l.borger at swansea.ac.uk).

Hope to see many of you!

Biosciences seminars - spring 2014 schedule

Speakers for the Biosciences seminar series spring 2014

Venue: Zoology Museum

Time: 1pm

10 April
Speaker: Dr. Andrea Manica (Cambridge University, UK)
Title: The long march of the human genes


08 May
Speaker: Dr. Owen Jones (University of Southern Denmark, DK)
Title: Exploring the landscape of ageing and lifespan in the tree of life


22 May
Speaker: Dr. Edward Codling (University of Essex, UK)
Title: Disease detection in dairy cows through the analysis of individual and social movement behaviour


05 June
Speaker: Dr Andrew L Jackson (Trinity College Dublin, IE)
Title: Evolution of Information Processing

19 June
Speaker: Prof. Simon Leather (Harper Adams University, UK)
Title: Fertilizers, insect pests and natural enemies

Biosciences seminars - winter 2014 schedule

Speakers for the Biosciences seminar series winter 2014

Venue: Zoology Museum

Time: 1pm

30 January
Speaker: Prof. Kam Tang (Swansea University, UK)
Title: Myth and Mystery of Mid-water Methane


13 February
Speaker: Dr. Gabriele Cozzi (University of Zurich, UK)
Title: Carnivore spatial ecology: interspecific interactions & population demography


27 February
Speaker:  Dr. Thomas Ezard (University of Southampton, UK)
Title: The fitness costs of adaptation by genetic assimilation, phenotypic plasticity and maternal effects


13 March
Speaker: Dr. Christoph Scherber (University of Goettingen, D)
Title: Plant diversity, global change, and multitrophic interactions


20 March
Speaker: Prof. Adrian Thomas (University of Oxford, UK)
Title: Evolutionary Biomechanics: adaptations for flight performance in birds


27 March
Speaker: Dr Eric Morgan (University of Bristol, UK)
Title: Spatial parasite transmission in wild ungulates and carnivores