About 20 members were met by Jonathan Thompson and Matt Somerville and ushered into the classroom, where Jon gave us a brief overview of the nature reserve.

After buying the 30 acres of newly-planted deciduous plantation, Jon has been working hard to increase the diversity of habitats with small-scale re-wilding. Jonathan explained that, at Underhill, this means mimicking the effects of the large native animals currently missing from the local environment, such as wild boar, beaver and wild cattle. For example, ring barking trees to create dead-wood habitats and opening the woodland, to let light penetrate the forest floor.

We then split into two groups; one led by Matt and the other by Jonathan, before a half-time change over. Matt started by showing us the inner workings of a natural beehive, teaching us about Propolis, which is like a bee glue, with amazing qualities, which bees use to fill holes with and prevent pests taking over. Matt makes something like a hundred natural hives each year, in two styles: Rocket and Log types. We walked onto the reserve to look at several of the log hives, one of which was humming with bees. Wild honeybees have recently been classified as endangered, and it was terrific to have a deep dive into their life and ecology by a real expert.

Jonathan took his group to see newly dug ponds and scrapes which had just started re-filling with water after the summer’s drought. Holding water year-round, whatever the rainfall is, the lake has a large population of amphibians and lots of other wildlife, Jonathan has even seen otters. Near the lake is an example of ‘conservation hedge-laying’, a really thick, wide and tall hedge, where each stem has been cut half-way through at the base and pushed over to forty-five degrees. One of Jonathan’s students has surveyed the invertebrate community in this one hedge and has written a paper on it. Also, a book has been written about it, by a local author!
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Finally, Jonathan took us down to a small stream where the students of the John Muir award scheme made dams, to simulate the activities of beavers. These dams hold up the water, creating pools, which clean the sediment and enable a new community of wildlife to exist.

​Peter Shallcross

​© Fera

This field trip is not suitable for those who are allergic to bees.

We are fortunate to have the opportunity to meet Matt Somerville and fit one more field trip into our calendar. Matt's passion is making beehives, supplying them all over the country to establish colonies of wild bees. This event will cover the ecology of wild bees and their importance as pollinators. Jonathan Thompson has several of Matt's hives on his nature reserve, which is worth visiting in its own right. View the fascinating short film about Matt's way of making the hives here.

Please contact us to book a place and tell us whether you'll meet us at the Nadder Centre, Weavelands Road, Tisbury for car share or meet at the Underhill Nature Reserve. Details below.

Visit to Underhill Nature Reserve. Organised by Peter Shallcross.  
Meet at the Nadder Centre car park for 3:30 pm departure or at Underhill Nature Reserve, East Knoyle, SP3 6BP at 4 o'clock.   What3words //bearable.whispers.echo

Anticipated end time: Concluding at 6:30 to 7.00 pm with return to Nadder Centre by 7:00-7.30 pm. 

Distance, Difficulty and Footwear: There will be less than ½ mile of walking, some of it uphill. The walking could be very uneven and wet. Walking shoes/boots are advised.

Our apology that Focus September magazine has the wrong date. We are going on Sat 27th September! 

This year’s long warm and dry summer has been mostly favourable for dragonflies and damselflies, which together are known as Odonata. In contrast to butterflies, many odonata species have long flight periods. The emergence of adults from their aquatic larval stages is not synchronised so, in the right weather conditions, some species can be seen at any time between March and September. As long as the nights do not get too cold, and there are no long periods of wet weather (when they cannot hunt), the larger dragonflies can keep flying well into the autumn. Warm, dry days and evenings will give them plenty of time to feed and mate. As the males often fight over breeding territories, and dragonflies may be attacked as potential food by the hobby falcon, by late summer they can look so badly damaged and worn out that you wonder how they keep flying. Unlike several species of butterfly, dragonflies and damselflies do not hibernate as adults. Eventually they will become too damaged, or a sharp frost will bring their lives to an end. By then they should have mated, and the females laid their eggs in a suitable water body. The resulting carnivorous larvae will then spend months developing underwater, before emerging as flying adults in the following summer. Unfortunately, extended dry spells such as we have had this year can dry up their breeding habitat and the larvae lost, so the “good” summer is not necessarily all good news for odonata.

At 57 species, the list of odonata recorded in the UK is about the same size as that for our butterflies. A number of these, with very exacting habitat requirements, became extinct last century. However, the list is undergoing a period of unprecedented change as, in recent years, a number of species have been discovered for the first time. Some of these have gone on to become breeding species. This is largely a result of climate change, which is allowing a number of insects to expand their range northwards through Europe and across the channel. Notably, this summer has seen increased numbers of the strikingly marked Jersey Tiger Moth being seen in southern England. Once only plentiful in the Channel Islands, since 1990 this day flying moth has spread north and east from its mainland strongholds in south Devon, and several have been seen in and around Tisbury. It has become sufficiently numerous to be added to the list of target species for the national Big Butterfly Count.

And now, news comes that a species of butterfly from Southern Europe has been spotted in the UK for the first time. The Southern Small White, which even on close inspection doesn’t look that much different to a Small White, a Green Veined White or, er, a small Large White, just makes life more difficult for the butterfly recorder. It’s easy to see why most of us lump them all together as “cabbage whites”.

​Andrew Graham

I really struggle during heatwaves. At home, I do all I can to keep the house cool and to make sure there is some shade into which we can retreat at the hottest time of the day. But, how is wildlife, which has evolved over long time periods to be adapted to our normal climate, impacted by the increasingly frequent hot and dry spells? Well, in numerous direct and indirect ways.

We will see in our gardens how fruit and veg may mature too quickly and drop fruit prematurely. In the field, this can mean that crops of berries, nuts, and fruits that birds and animals normally rely on in autumn, may be gone by the time they need them. Although we can water our wilting garden plants and seedlings, in the wild they may perish, and a new generation will be lost. If the plants provide food for the larvae of insects like butterflies and moths become desiccated and die, the larvae won’t be able to grow sufficiently to progress to their overwintering stage, diminishing the numbers that emerge next year.

Anyone trying to dig into their flowerbeds will know how rock-hard the soil can get. Well, imagine if you rely on muddy soil with which to build a nest, or on digging into that soil to get food – as badgers, hedgehogs and many birds do. Life becomes very difficult for them. And things are just as bad for the creatures in that hardened soil, making it an inhospitable place. The worms and invertebrates that moles feed on are harder to find, so they must dig deeper to find moist soil and food.

While every creature needs to drink water in some way, amphibians such as frogs and toads rely on being able to keep moist, but as cool damp areas become increasingly rare, they risk death from dehydration. During heatwaves, water temperatures in ponds and rivers rise, resulting in reduced dissolved-oxygen levels, which in turn can kill fish. At the same time, the warmth encourages algal blooms, which can smother other wildlife and become toxic. If ponds dry out completely before tadpoles have competed their transition to froglets or toadlets, they will die.

Added to all these problems is the increasing risk of wildfires, or, even worse, deliberately started fires. This is a particular problem on our southern heathlands, many of which are close to built up areas, which seems to increase their vulnerability.

Obviously, it is not all bad news. Some species undoubtedly benefit from the heat and drought. But cumulatively, repeated heatwaves will favour the more resilient species, which can adapt in the short term or can move to more favourable locations and are able to recolonise later. Sedentary species, or those whose population take many generations to rebuild, may become locally extinct, eventually leading to a reduced flora and fauna of robust, adaptable species. Unfortunately, many of these are what we currently think of as pests. In future, our flora and fauna may be less diverse, less interesting, and significantly different to what we are comfortable with.

Andrew Graham

The community meadow just behind the Nadder Centre is full of flowers this summer. After several years of careful ragwort removal, followed by taking an annual hay cut, the grass has become less dominant allowing other flowering plants to flourish. As well as the striking clumps of white ox-eye daisy, during a walk through the meadow you should be able to find knapweed, wild carrot, buttercups, clovers, and several members of the dandelion family, including goat’s beard and daintier ones such as cat’s-ears, hawkbits and hawkweeds. These can be tricky to identify accurately but the variety is what is so attractive.

Contributing to the decline in the vigour of the grasses is the yellow rattle, a plant that is a semi-parasite of grasses, feeding off the nutrients in their roots, suppressing their growth. Unsurprisingly, the flowers are yellow, but the other part of the name is derived from the papery brown calyx which creates a small bladder in which the seed ripens. When several on one stem are ripe, they will rattle in the wind and multiple plants can set up a dry rustling in the breeze. This species has spread rapidly across the meadow and is now prolific in places.

While taking the hay cut aims to reduce the fertility of the meadow, acting against this is the spread of the clumps of sainfoin. Like other members of the pea family, this plant, with bright magenta flowers, fixes nitrogen in its roots, which penetrate deep and bring up nutrients from the subsoil.

Although far less numerous, another unusual plant found scattered throughout the field is the common broomrape. Broomrapes are a group of striking, poker-shaped, parasitic plants that lack chlorophyll, so they are never green. There are nine native species in Britain, each generally associated with distinct species or groups of plants. Looking superficially like a faded, dried out orchid, their flower stems can remain in place through the winter, after shedding their dust like seed. If this seed lands close to a suitable host, it germinates in response to chemicals in the soil produced by that plant. It then grows towards and attaches to the host, from which it takes sufficient sustenance to produce a new flower. In the case of the common broomrape, these flowers can be quite variable but are generally between a brownish red and a creamy yellow in colour. It is most often associated with members of the pea family or wild carrot. While the latter is present in the field, it is most likely associated with the prolific red clover or sainfoin, both of which are flourishing there.

The flora of the meadow is visibly very dynamic as varied species increase or decline. However, the diversity of flowering species appears to be increasing all the time, to the benefit of the numerous insects, including the common grassland butterflies. Look out for Meadow Browns, Ringlets and Marbled Whites, all of which can be seen there in scores on a good day.

​Andrew Graham

Matthew Phillips has passed on a recommendation for "Jump" which is a musical performance composed and performed by Karen Wimhurst at Sandy Hills Art Centre on Thursday 26th June at 6pm.

"A wonderful and unusual evening at Sandy Hill Arts Thursday 26th June celebrating UK's Insect Week. The evening begins with a fascinating illustrated talk by eminent entomologist Peter Smithers, presenting his new work 'Small Game Hunter'. The second half is musical and visual magic - an interweaving of clarinets, insect and amphibian sounds alongside a film by Glaswegian based artist Sonia Killman, drawing on macrophotography of these wonderful creatures."
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We are so fortunate to live in this beautiful part of the world but also, we are incredibly lucky that so many people with expertise and interest in our natural environment live here too and are willing to share their knowledge with us too. On Thursday November 28th Dr Jolyon Medlock, Head of Medical Entomology, Porton Down, UK Health Security Agency talked to us about Ticks, mosquitoes and diseases.

An uneasy but fascinating listen for many of us, Jolyon took us on a tour of the world of ticks and then of mosquitoes and the diseases that they carry and transmit to us and other creatures.

Ticks are arachnids and metamorphose. They lurk on plant stems as nymphs where they “quest” for a suitable host to feed from their blood. They latch onto their host – they do not run or jump or fly. They have two key requirements: a moist microclimate or high humidity for survival away from a host and available hosts for blood-feeding.

They are found in habitats with suitable microclimates and hosts e.g. woodlands, heathland, grassland, parks and gardens. They are most active between March and July. The significant diseases they carry are Lyme borrelliosis, tick-borne encephalitis, babesiosis, anaplasmosis, rickettsial disease (spotted fever), relapsing
fever and Crimean-Congo haemorrhagic fever.

Jolyon’s message is – be aware, check yourself and your children’s and pets’ skin after being outdoors. Seek medical advice if you get a fever, rash or feel unwell after a tick bite.

Mosquitoes are insects. There are 36 species in the UK. Some species cause nuisance biting. Most are associated with wetlands. Some are only in tree holes.

Some species are very common in urban areas. They can fly approximately two hundred metres and so they are being transported in cars, trains, lorries and planes to reach further away from their origins.

Jolyon and his team are surveying for ticks and mosquitoes to enable governments to prepare for future contingency plans as climate change warms our world giving better environments for ticks and mosquitoes to survive and thrive and as we travel further and faster taking these unpleasant companions with us.

Mosquitoes are a food supply for many birds, fish and other creatures but ticks have no purpose but to make a pleasant day out turn into a potential medical emergency. You have been warned!

​Emma Procter

This month we are fortunate to have a second talk and look forward to hearing from Dr Jolyon Medlock who will be telling us all about 'Ticks, Mosquitoes and their diseases' at 7.30pm in the Victoria Hall.

Jolyon has 25 years extensive field experience of infectious disease ecology in UK, Europe, Africa and the Caribbean. He first worked in Africa on malaria control and lymphatic filariasis and since 2002 has been at Porton Down working for UK government health agencies.

Jolyon leads the Medical Entomology group advising UK government on vector-borne disease risk and managing the UK-wide vector surveillance systems for diseases such as Lyme borreliosis, rickettsiosis, West Nile virus, Zika, chikungunya and dengue. With over 100 peer reviewed papers and book chapters, Jolyon's research includes focus on the impacts of environmental and climatic change and habitat management for the changing status of vector-borne disease.

Everyone is welcome. The talk is free for members and £2 for visitors over 21. Doors and the bar will open at 7pm.

​The Society meeting this November will be one of the rare occasions when I actually know something of the topic we shall hear about. A little over a year ago I paid a visit to a stretch of riverbank in the Wylye Valley to hear all about work being done by local farmers. They were  running a programme of soil sampling and trials, with the aim of reducing levels of nitrate, phosphate and sediment run-off reaching the river and groundwater. 
 
The man I heard speak a year ago, Robin Leech, is coming to talk to us on the topic of Wylye Valley Farmer Cluster: monitoring rivers, at 7:30pm on Thursday 14th November (in the Victoria Hall on Tisbury High Street).
 
​Robin is a passionate naturalist, skilled in bird and invertebrate identification, who is making ecology into a career. He is employed by a local farmer and landowner and acts as co-ordinator for the group of farmers involved in this project work.

We shall hear how the project is going, one year on from my visit. And we shall also hear, I am sure, about the Landscape Recovery Project initiated this year for the wider Wylye Valley, involving both the Wessex Rivers Trust and Wiltshire Wildlife Trust, that aims to restore the river to a more natural state and reconnect it to the floodplain.

All of which should have huge benefits for biodiversity, alongside improving water quality and sequestering carbon.

Dick Budden

We are pleased to announce that Jolyon Medlock will now be giving his talk "Ticks, mosquitoes and their diseases" on Thursday 28th November at 7:30pm. This has been re-scheduled from Sept. Please note that the Tisbury Natural History Society will now be having two talks during November and we'll send a reminder out nearer the date.