My own experience of David Hockney was an extraordinary set of bright images of trees and woodland at an exhibition in Saltaire in West Yorkshire. His death marks the passing of one of Britain's greatest artists. Many will remember him for his Californian swimming pools, his portraits and his restless experimentation with new technology. Yet some of his most original and affecting work came from a much simpler source: trees. In the last two decades of his life, Hockney became fascinated by the woods and forests of northern England. Again and again he returned to the same stretches of woodland in the Yorkshire Wolds, painting them through winter, spring, summer and autumn. Like a naturalist studying a favourite species, he observed every change in colour, structure and light. The centre of this obsession was a small area of woodland near the village of Warter in East Yorkshire. Here he found the subject that would occupy him for years. The trees themselves were not particularly famous or ancient. They were ordinary beeches, ashes, sycamores and hawthorns growing beside country roads and in modest woods. Yet Hockney saw something extraordinary in them. Their branches formed intricate patterns; their colours shifted with every season; their appearance changed from hour to hour as the light moved across them. His masterpiece Bigger Trees Near Warter was the culmination of this fascination. Stretching more than fifty feet across, it transformed a relatively unremarkable patch of Yorkshire woodland into one of the most ambitious landscape paintings produced in Britain for generations. The work depicts trees in winter, stripped of their leaves. Without foliage to distract the eye, the viewer is drawn into a maze of branches and trunks. Hockney turns the woodland into something almost architectural, a vast structure built from living wood. What distinguished Hockney's woodland paintings was his refusal to treat trees as background scenery. In much traditional landscape art, trees frame a view or provide decoration. For Hockney they were the main event. He painted individual trunks, tangled roots, branches reaching skywards and the spaces between them. He once remarked that trees are among the most complex things we ever look at, yet most people hardly notice them. His favourite location became the lanes around Warter, Garrowby and the nearby woods of the Yorkshire Wolds. These landscapes appear repeatedly in works such as The Tunnel, October-November, Woldgate Woods and May Blossom on the Roman Road. The same roads and woodland rides recur year after year, allowing viewers to witness the changing seasons almost as if they were watching a film. In later life Hockney found a new woodland inspiration in Normandy. There he rented a farmhouse surrounded by trees and produced hundreds of paintings and iPad drawings recording the arrival of spring. Blossom erupted across orchards and woodland edges. Fresh leaves appeared almost overnight. His celebrated series A Year in Normandy captures the seasonal cycle of a landscape seen with extraordinary attentiveness and joy. Hockney's paintings remind us that forests are not static places. They are constantly changing communities of light, colour and growth. He showed that a roadside copse in Yorkshire could be as worthy of artistic attention as the Alps or the Grand Canyon. More than perhaps any modern artist, he taught us to look carefully at trees. That may prove his most enduring legacy. Long after the swimming pools fade from memory, the woods of Yorkshire and Normandy will remain alive in his paintings: places where he discovered wonder in every branch and every leaf. The death of David Hockney marks the passing of one of Britain's greatest artists. Many will remember him for his Californian swimming pools, his portraits and his restless experimentation with new technology. Yet some of his most original and affecting work came from a much simpler source: trees. In the last two decades of his life, Hockney became fascinated by the woods and forests of northern England. Again and again he returned to the same stretches of woodland in the Yorkshire Wolds, painting them through winter, spring, summer and autumn. Like a naturalist studying a favourite species, he observed every change in colour, structure and light. The centre of this obsession was a small area of woodland near the village of Warter in East Yorkshire. Here he found the subject that would occupy him for years. The trees themselves were not particularly famous or ancient. They were ordinary beeches, ashes, sycamores and hawthorns growing beside country roads and in modest woods. Yet Hockney saw something extraordinary in them. Their branches formed intricate patterns; their colours shifted with every season; their appearance changed from hour to hour as the light moved across them. His masterpiece Bigger Trees Near Warter was the culmination of this fascination. Stretching more than fifty feet across, it transformed a relatively unremarkable patch of Yorkshire woodland into one of the most ambitious landscape paintings produced in Britain for generations. The work depicts trees in winter, stripped of their leaves. Without foliage to distract the eye, the viewer is drawn into a maze of branches and trunks. Hockney turns the woodland into something almost architectural, a vast structure built from living wood. What distinguished Hockney's woodland paintings was his refusal to treat trees as background scenery. In much traditional landscape art, trees frame a view or provide decoration. For Hockney they were the main event. He painted individual trunks, tangled roots, branches reaching skywards and the spaces between them. He once remarked that trees are among the most complex things we ever look at, yet most people hardly notice them. His favourite location became the lanes around Warter, Garrowby and the nearby woods of the Yorkshire Wolds. These landscapes appear repeatedly in works such as The Tunnel, October-November, Woldgate Woods and May Blossom on the Roman Road. The same roads and woodland rides recur year after year, allowing viewers to witness the changing seasons almost as if they were watching a film.   In later life Hockney found a new woodland inspiration in Normandy. There he rented a farmhouse surrounded by trees and produced hundreds of paintings and iPad drawings recording the arrival of spring. Blossom erupted across orchards and woodland edges. Fresh leaves appeared almost overnight. His celebrated series A Year in Normandy captures the seasonal cycle of a landscape seen with extraordinary attentiveness and joy. Hockney's paintings remind us that forests are not static places. They are constantly changing communities of light, colour and growth. He showed that a roadside copse in Yorkshire could be as worthy of artistic attention as the Alps or the Grand Canyon. More than perhaps any modern artist, he taught us to look carefully at trees. That may prove his most enduring legacy. Long after the swimming pools fade from memory, the woods of Yorkshire and Normandy will remain alive in his paintings: places where he discovered wonder in every branch and every leaf.

Last year was not a good year for bumblebees.   Despite the warmth and sunny days of late Spring and Summer, they did not fare well.  Overall, numbers dropped by about a fifth.  We know this thanks to the efforts of the Bumblebee Conservation Trust.  The trust runs a nationwide bee walk scheme each year.  This involves hundreds of trained volunteers, walking across a thousand plus fixed routes, counting the bumblebees that they see.  This enables the Trust to calculate the number of bumblebees observed for each kilometre walked. This gives a measure of the health of bumblebee populations. Last year’s walks indicated ‘historic lows’ for 15 of our native species of bumblebee.  Red tailed bumblebees were particularly affected. After a relatively mild winter, many queen bumblebees emerged early from hibernation.  They then met with the rain and cold of early Spring. Though a bumblebee can cope to some degree with cold - by shivering to generate heat, the rain left them unable to forage in search of pollen and nectar.  Queen bumblebees have to establish a colony singlehandedly.  They may lay eggs, but if they remain within the nest to keep the larvae warm then they starve.  If they leave to find food then the larvae die in the cold.   So the weather is critical to the establishment and success of a colony.  The first brood of eggs need to be warmed by the queen, but she needs to be able to leave to feed herself and collect food for the growing larvae.  Last year, the establishment of colonies and rearing of the first generation of worker bumblebees was limited.  Indeed, it was estimated that the worker population in June fell by perhaps 50% for some species. [caption id="attachment_43455" align="aligncenter" width="675"] Coming into land[/caption] Sadly, the disappointing numbers for 2024 is part of a long term decline in bumblebee numbers, with some species become extinct (either locally or nationally).  This decline is associated with  Changing climate.  With global warming, we are experiencing warmer, wetter winters and hotter, drier summers, coupled with extreme weather events.  Bumblebee nests can be flooded by heavy rain. Habitat fragmentation.  Many woods and wild flower meadows have been lost over the decades, so that bumblebees (and other animals) find it difficult to move around in the disconnected landscape. Biological corridors have been lost.  Local populations can become inbred, which leads to a loss of genetic variation.  Flower-rich meadows which offered pollen and nectar are now a rarity.  Even brownfield sites can offer food for bumblebees - from the ‘weeds’ growing in them. The expansion of agriculture, towns and motorways. The countryside has been gradually devoured by the expansion of agriculture, towns and transport routes. These have contributed to the loss of natural ecosystems, like the meadows mentioned above, and also hedgerows. Modern agriculture also makes considerable use of many pesticides and herbicides.  The neonicotinoids [neonics] were used extensively as seed dressings for crops, such as oil seed rape and maize.  Even when exposed to very low concentrations of these chemicals, bees and bumblebees suffered. More recently it has been demonstrated that sulfoxaflor, another pesticide affects bumblebees.  It can reduce the number of workers and queens produced by a colony by 50%. [caption id="attachment_43460" align="aligncenter" width="675"] buff tailed bumblebee[/caption] As ever, local bumblebee populations can be helped by ensuring that gardens have a wide diversity of nectar-rich flowers, plus “No mow May” also has a positive impact.  

One of the simple pleasures of camping in our woodland is cooking outdoors. It doesn't have to be complicated or expensive either. We use an EcoZoom stove, which is incredibly easy to light and cook on - all it needs is a handful of small branches gathered from the forest floor for fuel. When camping, I'm always on the lookout for one-pot recipes. They're easy to prepare, minimise washing up, and allow you to spend more time relaxing and enjoying your surroundings. To make things even simpler, I mix all the herbs and spices together at home before we leave, then just pack the remaining ingredients to prepare on site. For this meal, all we needed was a chopping board, a sharp knife, a wooden spoon, and a few bowls and plates. As the evening drew in and the campfire crackled nearby, we tucked into this smoky sausage & black bean chilli. Rich, warming and packed with flavour, it was the perfect woodland supper – made even better with a couple of cold beers and good company around the fire. If you're looking for an easy, satisfying meal for your next woodland camping trip, give this recipe a try. Ingredients 2 tbsp vegetable oil 8 sausages of your choice – we used chicken chipolatas  1 large onion (we used red), finely chopped, 2 peppers, sliced 3 garlic cloves crushed, 1 tbsp smoked paprika, 1 tsp ground coriander, 1 tsp ground cumin, 1 heaped tbsp chipotle paste (optional)herbs, spices, woodland fuel 400g chopped tomatoes, 2 tbsp ketchup 400g can black beans drained handful of coriander leaves picked, grated cheddar, natural yogurt or soured cream, and tortilla chips, to serve Steps Heat half of the oil in a large pan over a medium heat. Add the sausages and cook for 12–15 minutes, turning regularly until browned all over and cooked through. Transfer to a plate and set aside. Add the remaining oil to the pan, then stir in the onion and peppers. Cook over a low heat for around 10 minutes, stirring frequently, until the vegetables have softened. Add the garlic, spices and chipotle paste (if using), and cook for a further minute until fragrant. Pour in the tomatoes, one tin of water, the ketchup and a little seasoning. Bring to a gentle simmer, then cook for 20 minutes, partially covered with a lid or loosely covered with foil. Stir occasionally and add a splash of water if the sauce becomes too thick. Slice the cooked sausages into thick rounds and return them to the pan along with the beans. Cook for a few more minutes until everything is heated through. Serve in bowls, topped with fresh coriander, grated cheese and a spoonful of yogurt or soured cream, if desired. Enjoy with tortilla chips for dipping, sour cream, avocado or grated cheese. The ingredients.

We can communicate in many ways, other animals may  message each by vocalising or gesturing.  Some release air-borne chemicals (pheromones) to attract a mate.  Plants also communicate by chemical signals that they release into the environment. The most obvious example is the release of scents to attract pollinators.   These floral scents are usually oils, made from volatile organic compounds (VOCs).  VOCs are carbon based compounds, such as the terpenes. They usually have a strong and pleasant odour.  They form partt of the scent of many plants, for example, honeysuckle, roses, jasmine, lilac, and mock orange.  Different plants produce different scents.  These different chemical signatures help pollinators identify particular species, and locate the nectar on offer. The VOCs produced by ripe fruit help attract animals that assist in seed dispersal. [caption id="attachment_43370" align="aligncenter" width="675"] Buff tailed bumblebee visiting a foxglove[/caption] VOCs are also produced by leaves when plants are under attack.  These may deter the attacking organism directly, e.g. caterpillars, or they may attract an organism that predates upon the herbivore. When pollen beetles feed on oil seed rape, the plants release VOCs which attract the attention of insects (a type of wasp). The wasps lay their eggs in the larvae of the pollen beetles. The pollen beetle larvae are then ‘eaten alive’, by the developing wasp larvae.  Sometimes, VOCs are produced by stressed or attacked plants,  these VOCs ‘warn’ nearby plants of the same species. These plants can then activate their defences before they are attacked. This helps ensure the survival of some of the population. Recently, it has been suggested that mycorrhizal systems act as a physical and chemical ‘means of communication’ between the trees in a woodland, in what has been termed the ‘wood wide web’. The term was coined by Dr. Suzanne Simard, a forest ecologist at the University of British Columbia to describe the complex relationships between fungi and plants in woodland ecosystems.  Interestingly, VOCs can influence air quality and atmospheric processes.  In a woodland,  the scent of pine or other conifers may permeate the air.  Pines release volatile compounds, such as alpha-pinene.  Recent research has established that these volatile compounds / vapours are not only responsible for the characteristic scent, but also contribute to the formation of aerosols in the atmosphere* both in and around such woodlands and forests.  In the presence of sunlight, VOCs can interact with the gas nitric oxide to form ground level ozone, which contributes to smog formation. Forests can be a significant source of VOC emissions. The production of VOCs is affected by environmental  conditions.  VOCs release generally goes up with an increase in temperature, as the plants metabolism increase.  An increase in temperature also helps in the evaporation / volatilisation of plant oils and scents. Water availability and light intensity also affect VOC release.  * An aerosol is a ‘mixture’ of very small particles (solid or liquid) in air; other examples of aerosols include mist, cigarette smoke, or car exhaust fumes Addendum : Heavier and far rarer VOCs are the sesquiterpenes, larger molecules that trees in the Amazon release when exposed to drought.  These reactive molecules help form tiny particles that seed clouds and scatter sunlight. These emissions could change the weather and climate over the whole region.  For full details see : https://www.earth.com/news/amazon-trees-emitted-never-before-seen-chemicals-during-drought/  

Butterflies form part of the woodland fauna.  Different species occur in different niches. Glade butterflies, like the speckled wood.  These butterflies like open, sunny clearings in the woods.  The speckled wood may be recognised by its brown and cream spotted wings.  It may be seen in partially shaded woodland with dappled sunlight. The  males may rest in a ‘pool of sunlight’, but will rise quickly if disturbed. Both male and female feed on honeydew, and do not feed on flowers, except when aphid numbers / activity is low.    Honeydew is the sticky, sugar-rich fluid that is ‘produced’ by aphids (greenfly and blackly) and some other insects.  As these insects feed on plant sap,  their mouthparts penetrate into the sugar-conducting tissue - the phloem.   This passes into the gut of the animal and any undigested material is exuded as a sticky drop.  [caption id="attachment_43415" align="aligncenter" width="675"] A speckled wood at rest[/caption] Canopy dwellers, like the purple emperor spend most of their time high up in the trees.  They make use of the leaves for feeding of the caterpillars, or indeed breeding.  The adult butterflies feed on tree sap or aphid honeydew. Dwellers of the woodland edges.  The comma favours woodland edges and open woodland, where it breeds and hibernates.  It may be seen in the vicinity of nettles and willows.  Its distinctive scalloped wings and their colouring help conceal hibernating adults amongst the dead leaves of autumn. [caption id="attachment_43408" align="aligncenter" width="675"] The Comma[/caption] By occupying different places and feeding on different things, the various species avoid direct competition with one another.  Sadly, woodland butterflies have been in decline in recent times, as have many native butterfly species across the UK.  This decline has been attributed to a number of factors : Lack or loss of traditional woodland management, such as coppicing and grazing, which allow for the creation of open, light filled spaces. Habitat fragmentation.  Many butterflies travel over relatively short distances.  If woodlands become divided or lost through urban sprawl, motorway creation etc., then populations become isolated and genetic variation (and hence, diversity) is lost.  Localised extinction may result. Climate Change. Extreme weather events (like heatwaves in May), changing patterns of rainfall are thought to disrupt the natural chronology of butterfly life cycles. Pesticides and pollution.  Woodland areas may be exposed to the application of pesticides and fertilisers added to adjacent farmland.  Even sub lethal doses of pesticides can affect butterfly life cycles.  The deposition of nitrogen rich pollutants can encourage the overgrowth of botanical thugs (like nettles), so food sources for caterpillars are lost. For more information on butterflies and their life cycles, see this blog https://www.woodlands.co.uk/blog/flora-and-fauna/woodland-butterflies/and visit https://butterfly-conservation.org/butterflies 

Recent research at the Okinawa Institute of Science suggests that the fungi evolved many millions of years ago, indeed perhaps before plants colonised land.  The common ancestor of present day fungi may have arisen 1.4 billion years ago, which is long before anything resembling a land plant appeared.  Next to come were the red algae (probably).  Soft bodied animals appeared in the Ediacaran period, some 635 to 542 million years ago. The first simple land plants appeared approximately 500 million years ago, evolving from green algae in the Cambrian period. The dating of the appearance of the fungi is dependent on the study of few fossil forms of fungi; and DNA studies to create a molecular clock.  The clock is created by a study of mutations, and what have been termed ‘horizontal gene transfers’.  If, as suggested, fungi predate plants by eons, then they had millions of years to evolve and diversify.  They probably formed associations with primitive algae and / or bacteria. It was these organisms that were the first colonists of land, along the damp shorelines of ancient seas.  Fungi are ‘chemical engineers’, they can weather rock, freeing elements like phosphorus and other nutrients.  They likely built the first thin ‘soils’, turning bare rock into something could support the tentative roots of the earliest plants.  Essentially, the land was prepared for colonisation by the early fungi. Even today, fungi can colonise hostile places.  They are often the first organisms to arrive to wildfire burn areas, in the debris of volcanic eruptions, and in pyroclastic flows.  The eruption of Mount St.Helens spewed mud and ash over vast areas, leaving behind a ‘martian’ landscape of grey rubble and ash.  But within 10 days, fungi were beginning to bioengineer the area.  Fine filamentous hyphen threads were beginning of attach to the smaller pebbles / material thrown out of the volcano.  Such fungi have been called ‘phoenicoid fungi” - a reference to the Phoenix rising from the ashes.  They are the first responders.  In California, members of some Native American tribes historically collected burn morels for food after a fire burn.  There is also the possibility of fungi being used eventually to clean up polluted environments and in phytoremediation of abandoned mines, landfill sites etc.  They might also tackle PFAs - these are group of over 10,000 man-made chemicals often called  "forever chemicals".  because they don't easily break down in the environment or the human body.  

For many years, people who lived near peatlands would cut sods of peat, allow them to dry and use them for fuel.  This, and other human activities such as Draining for agriculture, Deforestation Burning for ‘sporting’ purposes Testing of ordinance Tin streaming (in the case of Dartmoor) have left areas of peatland in a parlous state.  Often there are deep gullies and ditches, so water runs off and the peat dries out, no new material is formed  It is estimated that some 80% of peatlands in the UK are in a damaged or degraded state. They now represent a carbon source rather than a store. When healthy, peatlands can store twice as much carbon as forests, playing a part in reducing global emissions of carbon dioxide and helping to reduce / control flooding, and supporting biodiversity. Sadly, peat forms very slowly, forming (roughly) at a rate one millimetre per year. Peat is formed by the decomposition of plant material under water logged conditions. So at its deepest point, the peat on Dartmoor in nine metres in depth and therefore represent thousands of years of history and can be an archaeological treasure trove. [caption id="attachment_43175" align="aligncenter" width="675"] Scottish moorland[/caption] The UK’s Climate Change Committee has a target that 50% of upland peatlands and 25% of lowland peatlands should be restored to a natural condition by 2050.  If nothing is done, and the climate becomes warmer and drier, then the peatlands of the south west of England could be a thing of the past. Efforts are being made on areas such as Dartmoor to restore the landscape.  The gullies and ditches are being blocked, so that rainwater is retained and the water table is raised so that the wetness of the area is restored.  BY ‘reprofilling’ the landscape, pools will again form and sphagnum moss and other plants will grow and the process of peat formation will begin again.   In recent years, a project  [The South West Peatland Partnership] funded by Natural England South West Water & The National Trust has restored some 1700 hectares of damaged peat bog in the South West.  Whilst this is a long term project, some promising results have been observed such as an increases in the number and species of dragonflies.  They represent food for the next trophic (feeding) level, so that perhaps in time the number of wading birds and mammals on the moor may increase. Other areas of peatland, such as the blanket bogs of Caithness and Sutherlands and the Peak District need to be monitored as they too are at risk. Details of current work can be found here.

There are some 270 species of bee to be found in the UK.  Most of these bees are solitary bees. Solitary bees do not form colonies like the honey bee, with a queen and workers. Twenty four are types of bumblebee,  although two of these bumblebees may be extinct in the UK.  Included in the bumblebee category are the carder bees. Their name relates to their ability to ‘knit’ together plant materials / fibres to form a nest*.  The six species of carder bees in the UK are listed below : The common carder bee The brown banded carder bee The moss carder bee The red shanked carder bee The ruderal carder bee The shrill carder bee The common carder bee (Bombus pascuorum) is quite widespread and is found in gardens, the edges of woodland, and farmland throughout the country.  It is a social insect, forming colonies with worker bees.  Their yearly cycle is not dissimilar to that of bumblebees.  In spring, queen carder bees emerge from hibernation and establish new colonies. These develop throughout the spring and summer, adding workers.  By late summer, new queens and males are formed, and in autumn the old queen and workers die.  The new queens overwinter and emerge in the following spring. [caption id="attachment_43305" align="aligncenter" width="675"] Common carder bee[/caption] Carder bees tend to build their nests on or near the soil surface, using moss, dried grass or similar plant material.  The shrill carder bee favours flower-rich grassland areas to build its nest.  As so many of these diverse grasslands have disappeared over the last century, it explains the rarity of this particular bee.   Carder worker bees are a ginger / warm brown colour. Carder bees are noted for their ‘long tongues’, i.e. their mouthparts have a long proboscis [feeding tube].  This allows them to reach the nectar inside flowers with a long, tubular shape (such as foxgloves, honeysuckle and clover).  It also means that they are not in direct competition with ‘shorter tongued’ bees, who can only access open flowers.    Whilst visiting flowers, they act as pollinators of both wild flowers and farmland crops. As pollinators, they help promote the transfer of pollen from plant to plant, promoting outbreeding which in turn helps maintain variation with a species. The bees actively forage from spring into autumn and can thrive in our extensively modified landscape, so they are key pollinators in both rural and urban areas. * Originally, the term a carder referred to person who combs out and cleans fibres of wool / cotton before spinning.