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4 Posts tagged with the entomology tag
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A team of Museum scientists and volunteers visited Slapton Ley Nature Reserve between 21-25 July to sample invertebrates from a variety of habitats. Rachel Clark writes about their final day in the field.


25 July 2014

 

Today was the last day of sampling and we all loved it! Unfortunately Sara had to leave today, so we took the final photograph of us all together before we set off for sampling.

 

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All of us looking a little more tanned than when we arrived. Front row (left to right): Jan, Ryan, Fez, Georgie and Sara. Back row (left to right): Rachel, Thomas, George, Miranda and Beau.

 

Every evening this week we've been preparing the specimens we collected back at the field centre, and it's fiddly work!

 

The new age of deoxyribonucleic acid (DNA)

 

Some of the specimens collected during our fieldwork are destined for the Museum’s new Molecular Collections Facility (MRF), where they will be stored in liquid nitrogen at −150 °C to form a collection that can be used by scientists worldwide who want to study the DNA and other cellular contents of the species in question.

 

Over three evenings, after our lovely cooked meal served by Shaun from the FSC, two groups of four carefully collected tissue samples from freshly killed specimens.

 

The sample tissue (often the legs) were put into special small plastic vials then placed into liquid nitrogen vapour in a dry shipper, which freezes and preserves them.

 

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Left: the small vials which contain tissue samples. Right: a dry shipper with nitrogen vapour inside.

 

In total we spent 49.5 person-hours over three days preparing the samples from 220 specimens, each sample taking on average 14 minutes to process. We tried to ensure that we only collected a maximum of two of each species - all being larger invertebrates (flies, grasshoppers, wasps, spiders etc).

 

Our last site!

 

While some enjoyed sweeping, pootering and collecting butterflies, two of us (Miranda and I) went in search for a new site on the lake to put down yellow pan traps. We ended up on the edge of Slapton village - a four-mile round trip!

 

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The large, miles-long Slapton Ley!

 

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The beautiful walkway created by the FSC, which runs through the swamp fen in the south grounds of the Nature Reserve.

 

We did get some amazing views and got to sample right in the middle of Slapton’s Swamp Fen, which is something we would not have achieved! The photograph above shows just how big the Ley is: miles!

 

Our last Supper


In the evening we headed off to our last dinner together before we packed up to head home. This was held in the main FSC centre in Slapton.

We would like to say a massive thank you for the staff that looked after our stomachs during our time in Slapton, and particularly Shaun who was there every day serving us breakfast and dinner!

 

Thank you for reading - I hope you have enjoyed our blogging!

Rachel

 

Goodbye beautiful Slapton!

 

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The sun setting over Devon, from the field across from our base, Start Bay Centre.

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A team of Museum scientists and volunteers visited Slapton Ley Nature Reserve between 21-25 July to sample invertebrates from a variety of habitats. Rachel Clark writes about their second day in the field, including the range of traps they use to collect insects.


For the last two nights we have been putting out Ryan’s light trap. The trap runs all night and collects invertebrates such as moths, flies, beetles and wasps, which are especially attracted to the bright light - with a high ultraviolet component it is much more powerful than a household light bulb.

 

You can pooter specimens from around the trap while it is on, but you can also leave the insects in the trap overnight and take a look in the morning.

 

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Ryan and Thomas looking at what is flying around the light trap.

 

During our moth-trapping we collected a range of species, including Poplar and elephant hawk-moths, rosy footman, buff-tip, common footman, drinker moth and magpie moth... to name a few.

 

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Left to right; buff-tip, rosy footman and poplar hawk-moth which were found in the light trap.

 

We also used a method known as sweeping, which as the name suggests is sweeping a net in a figure-of-eight through vegetation. The net catches the invertebrates and they can then be pootered out of the net bag.

 

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Left: Jan teaching us how to use a sweep net. Right: Jan demonstrating how to pooter/aspirate effectively.

 

Jan provided an excellent demonstration for all of us on our first day of sampling; we are all now brilliant at sweeping in a figure-of-eight!

 

Later on some of us went to great lengths to collect some samples, including taking a paddle in the lake, which contains leeches!

 

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Left: some adventurous collectors searching the reeds for specimens. Right: a mass of leeches found under a rock (as well as on our skin).

 

With that I will leave you with a beautiful scenic picture from the Ley!

Thank you for reading.

Rachel

 

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Taken at the lake as the day draws in.

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A team of Museum scientists and volunteers visited Slapton Ley Nature Reserve between 21-25 July to sample invertebrates from a variety of habitats. Volunteer Rachel Clark reports back on their first day in the field.

 

Our first day of fieldwork mainly focused on a range of microhabitats in Slapton Woods, which is a short 10 minute walk from our base camp (Start Bay Centre).

 

Slapton Woods is ancient woodland located on the edge of Slapton Ley Nature Reserve, inland from the lake and the sea. The woodland has been around so long that is it is mentioned in the Domesday Book. Before the Field Studies Council (FSC) started to maintain the woodland (which they do only for public safety), it was largely unmanaged.

 

img1.jpgAnd so our first day of collecting started, deep in the amazing ancient woodland of Slapton Woods.

 

Now personally at this moment I felt like I was walking in the footsteps of great biologists such as Alfred Russel Wallace, Charles Darwin, and Henry Walter Bates... there are so many! I was so excited I could have danced through the woods. Raring to go with my backpack, pooter (that’s a suction device) and net, I caught up with everyone and we began to sample.

 

Working with creepy crawlies of the soil


Now this is an area which I know a lot more about, the sampling of invertebrates in the leaf litter and soil. Before we had a chance to get our bearings in the woods, Miranda, Georgie, Beau and myself got to work on some rotting logs.

 

img2.jpgBeau searching under some rotting logs for some good specimens for us to collect.

 

We were looking for groups like isopods (woodlice) and myriapods (centipedes and millipedes). This is done by opening up the rotting wood to expose the species which have burrowed into the wood.

 

It's all about the unknown - Malaise traps and yellow pan traps


So today, after a good few years sorting Malaise trap specimens in the Museum’s Soil Biodiversity lab, I finally got to see how Malaise traps work, which for me was really useful, as it means I can understand how the specimens were collected. 

 

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Thomas putting the final peg in the Malaise trap, a device that captures winged insects.

 

Malaise traps collect species of insects which fly such as Diptera (flies) and Hymenoptera (bees and wasps). They work by allowing the insects to fly under a tented area. They hit the netting that runs down the middle of the trap and then fall to the floor or hang on the netting. All winged insects after falling to the floor want to fly or climb upwards The Malaise trap directs them up towards the highest point where there is a funnel leading into to a pot containing ethanol – which quickly kills them.

 

We will be keeping our Malaise traps up until Thursday evening, when we will take them down and hopefully have an amazing bounty which will take very many hours to sort to order (Diptera, Hymenoptera etc).

 

What we did after we finished sampling for the day

 

After all the excitement and seriousness of sampling in the heat all day, we all have to find a way to relax and unwind… my personal favourite for celebrating a first successful day of sampling is to jump into the sea… fully clothed!

 

img4.jpgGoing, going, gone! Running in to the clear beautiful sea at Slapton Beach… yes, fully clothed!

 

img5.jpgGeorgie enjoying the entertainment and me having a relaxing moment floating in the warm sea.

 

Moth traps and sweep net collecting in the next blog piece, so stay tuned.

 

Thanks for reading!

Rachel

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A team of Museum scientists and volunteers are in Slapton Ley Nature Reserve this week to sample invertebrates from a variety of habitats. Volunteer Rachel Clark reports back on their first day and plans for the week ahead.

 

Day one - the road to Slapton


An early start was made by all ten of us today to arrive at the Museum nice and early. Before 10am it's still a place buzzing with activity as scientists work and front-of-house and retail staff prepare for some of the 4 million people who come through our doors into the Museum.

 

Soon enough we were leaving London behind and heading off for the sunny coasts of Devon and our field site.

 

All about Slapton Ley Nature Reserve


Slapton Ley Nature Reserve is in Devon, near Dartmouth in the South West of England. The reserve is an area of biodiversity importance as it is a designated SSSI (Site of Special Scientific Interest) with a rich coastal heritage. The lake in the nature reserve is separated from the sea by a thin band of land, with a lovely beach too!

 

With this in mind and the recent headlines during the winter, sampling places like Slapton Ley Nature Reserve is more important than ever as sooner rather than later the environment will be claimed by the sea.

 

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A view of the Slapton Ley Nature Reserve to the right showing the size of the lake and the surrounding woodland and cliffs (some of which we will survey this week), and the gorgeous blue sea to the left.


Slapton Ley Nature Reserve has been studied well by scientists in certain areas such as bats and birds, but the invertebrates in the area are under-recorded. Jan Beccaloni found this out earlier in the year and believed it was time to do something about it!

 

Why and what we're sampling

 

We are sampling for collections enhancement and to provide species records to the Fields Studies Council (FSC). The habitats we will be sampling are a range of natural and semi-natural habitats, including woodland, cliffs, grassland, open water and banks.

 

The invertebrates we are collecting include:

  • Arachnids (spiders and their relatives)
  • Hymenoptera (ants, bees and wasps)
  • Lepidoptera (butterflies and moths)
  • Diptera (flies)
  • Orthoptera (grasshoppers and crickets)
  • Isopoda (woodlice)
  • Myriapods (millipedes and centipedes)

 

Now the serious explaining is over, time for the fun of the adventure! 

 

The long journey


First I must say a big thank you to Jan Beccaloni for driving us down to Slapton, Thomas our Hymenoptera specialist for driving down the bags and equipment in his amazing 40-year-old Land Rover, and last but not least Georgie for directing us.  

 

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Georgie navigating while enjoying a ride in a classic Land Rover.

 

I personally tried to use the time to catch up on some podcasts on my iPhone which are over a year old, including one on Alfred Russel Wallace and the Birds of Paradise... I fell asleep twice! It was a 8 hour drive, though we all had a brilliant laugh in the mini bus throughout the day and got to know each other.

 

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The bright and breezy (at a petrol station!). Left to right: Beau, Fevziye (Fez), Sara, Thomas, Ryan, Jan, Georgie, George, Miranda and Rachel).

 

We passed one famous landmark, Stonehenge, very slowly which gave everyone a chance to take photos and we also passed some impressive fields with what looked to be hundreds of bales waiting to be taken into storage. We finally arrived in Slapton at our base camp of Start Bay FSC Centre at 19:00 (ish) hours with a lovely meal waiting for us ready prepared by the amazing staff at Slapton.

 

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A busy Stonehenge on a sunny summers day, it wasn’t only busy there... it was busy on the road running past!

 

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The mass of hay bales we encountered on our travels.

 

Some of us (myself included) were so eager to start collecting we set up a moth trap before heading off to bed. Well, that was the plan, some of us stayed up until gone past midnight looking at our catch. We plan to set it up tomorrow night and will write about it in a following post.

 

Hope you have enjoyed the excitement of our long journey! Bigger and better things to come!

 

Thank you for reading

Rachel