Showing posts with label Suffolk. Show all posts
Showing posts with label Suffolk. Show all posts

Sunday, 19 October 2025

Elm

July 2025. A hot field with wildflower mix is sweltering in South Suffolk sunshine. The clay-rich topsoil has cracked over the past few weeks of drought. Foraging bees lend a desultory drone. Nearby, an ancient woodland is inviting us out of the heat, but we will need to struggle through fallen twigs, branches, grass tussocks and nettles and beneath its leafy skirts to enter there.

Inside, the vista expands into an ample space of hard trunks and lofty limbs; zones of light and shade; those myriad green flakes we call leaves clustering in aerial mosaic overhead.


The elm tree is very large and correspondingly old - evidently it is a remarkable survivor.  The lofty elms of my childhood have gone; only their clonal regrowth reminds us where they were before the bark beetle finds them and they die off after about 20 years. Their desiccated skeletons rattle in East Anglian hedgerows for a decade or so before rotting away. Meanwhile another generation of suckers is reaching for the sky. This elm is different:  it has inbuilt disease resistance which makes it a desirable variety - potentially a variety with a destiny. 

We are here for look for elm seeds. Emerging into a clearing packed with waist-high bracken and nettles, we can examine the branches of this venerable old tree to find clusters of petalloid seeds on twig tips. There aren't any to speak of - the tree has taken shock at the drought and dumped its children.  They lie like papery, brown farthings underfoot among the leaf litter. I have to pick up and bag handfuls of debris to get enough of them. 


The elm seeds contain an invisible message packed in their DNA.  Once they begin unpacking it, we hope they will grow into disease-resistant Ulmus laevis. With a bit of tree nursery help, we hope to spread them elsewhere in Britain. I will never see them grow great in my lifetime but perhaps a little fiddling labour now sorting through a bag of papery seeds is a gift to an uncertain future which others will enjoy, just as I enjoyed the towering elms of my Suffolk childhood. 

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Text and images © Tim Holt-Wilson, 2025



Thursday, 19 May 2022

No-Mow-May

May returns and “the voice of the turtledove is heard in our land”. Sadly, the voice of the lawnmower is more likely to be heard today, as the grasses, dandelions and daisies surge ahead, and normalising lawn management fires up again. A lawn is a meadow passed under the yoke of culture. For some people even a striped lawn is too wild, and they replace it with plastic green turf. All this ‘normalising’ comes at a cost to the diversity of living things which thrive in grassland. 

Grasses were invented by nature about 120 million years ago, though it is unlikely that dinosaurs ever rolled on a prairie. It would take 70 million years or more before grasses were prolific enough to carpet the ground, so the pleasure of rolling on a greensward belonged to browsing and grazing mammals of the early Tertiary epoch. Later, whole ecosystems such as savannah, steppe and pampas evolved as a joint project of mammals and grasses. Grazers such as aurochs are likely to have maintained forest clearings and floodplain grasslands in prehistoric Britain (Yalden 1999, p.72). Wrested from woodland and valley scrubland for the purpose of livestock farming, hay meadows and grazing pastures are a Neolithic creation (Rackham 1987, p.330). Sheep, cattle and horses need them, and we need these animals.  

The familiar British meadow has become a rarity, particularly in the lowlands where 90% of it has been lost in the past century (Lake et al, 2020, p152). Ploughed up in favour of arable or replaced by monocultural grass leys, too many old meadows and pastures have been deleted from the landscape and, along with them, the vibrant populations of herbs, insects, birds, mammals, fungi, et cetera,  which had thrived on them for many hundreds of years.

One place in Suffolk with long-established grassland was Brome Park. The Hall was built in Tudor times, about 1550, and an engraving dated 1707 shows the house surrounded by extensive parkland and trees. The Park survived until about 1963 after which it was converted to arable land. The only areas not ploughed up were the grounds of the Hall, its tree-lined avenue and a scrap of land attached to a cottage known as The Bungalow, which is where I have lived since 1992.

Brome Hall, illustrated by Jan Kip, 1707.
The site of the Bungalow is just out of the picture, beyond a pond and dovecote (far left).


At first I mowed the lawns assiduously, to keep on top of the vegetation in a drive for order. I was worried what the neighbours might think if I didn’t. Later, led by a mixture of laziness and botanical curiosity, I began to make a first cut much later in the season. I began leaving some areas of grass longer than others – frankly, I hadn’t the heart to mince up the flowers that began showing themselves. As years went by, the lawn began to lose its carpet-like quality and became more like a meadow, with a tussocky grass structure interleaved with a variety of other plants. Some patches were left longer than others, following a three-tier regime. I became aware of the diverse flora within my care. I noticed discrete populations in different parts of the lawn: stands of cocksfoot grass and common sorrel on brown soils contrasting with timothy grass, ground ivy and mosses on sandier soils.


Germander speedwell (Veronica chamaedrys), ground ivy (Glecoma hederacea) and creeping buttercup (Ranunculus repens) in a sward of springy turf moss (Rhytidiadelphus squarrosus), May 2022.


Lady's smock (Cardamine pratensis) starring the lawn, with a large anthill (right), May 2022.




Twayblade orchid (Listera ovata), May 2022.

In 1999, I began making a list of as many species of plants and insects as I was able to recognise. I counted seven species of grass and two kinds of speedwell. I was amazed to find a twayblade orchid in one place and a spotted orchid in another; my lawnmower had never given them a chance to grow before. I found an incipient anthill beneath a plant pot, with yellow meadow ants scurrying about. I replaced the pot, and later discovered they had earthed up around it. This gave me the idea of encouraging anthills, of which I now have four – the largest is 30 cm high x 70 cm across. The lawn is now a texturally rich habitat: it may look a bit ragged and untidy in places but it now supports a much richer flora and fauna. In August I notice small moths flying up from the grasses round my feet. Frogs shelter beneath cool, matted tussocks, and voles forge a complicated network of tunnelled pathways. The spotted flycatcher swoops from a vantage point to snatch flying insects.  The green woodpecker bangs away at the ant hills. Rabbits scuff holes and leave scatterings of bare earth which are host for fresh seeds. Plumes of gnats dance overhead, sometimes following my head disconcertingly as I move about. 

Ant activity amid leaves of creeping cinquefoil (Potentilla reptans) and tufted vetch (Vicia cracca), May 2021.  


Having this meadow on my doorstep has transformed my engagement with and understanding of wildlife, particularly plants and insects. It has prompted photography, microscopy and the gathering of a small reference library. 

What I have done here is allow the inherent richness in this small corner of Suffolk to express itself. The diversity - the seven species of grasses, for example – is a legacy of the past, and argues for habitat continuity here. I didn’t plant them. I argue that my lawn is the final, biodiverse remnant of the old Brome Park which goes back to Tudor times, at least. The sward reminds me of old churchyards; it may never have been ploughed. None of the other land round here – not even the grounds of the Hall – is anything like so rich. I admit of having made additions to the garden over the past 30 years, for example alexanders, hyacinth, marjoram, lungwort, mahonia, box, magnolia, and – on the lawn – a clump of greater knapweed. I argued that none of these have modified the baseline plant population, which I think is an ancient one. I fear that when I leave here this little world will be endangered by someone who does not appreciate just what a special place it is.

Common sorrel (Rumex acetosa) and fading leaves of lesser celandine (Ficaria verna), May 2022.


My advice to gardeners is to stop mowing in May and see what comes up on your lawn. See what plant and animal diversity you already have – get to know and identify it, discover it close up; take macro photographs. If you find a monoculture then by all means diversify it, with native species chosen to typify a Suffolk meadow in your corner of the county. Someone in the future will thank you. Vary your mowing regime – I use a hand scythe in July to cut the longest grasses in the centre of the lawn while carving out swathes of different lengths in other parts with a petrol lawnmower. Sit back and note what happens. Give yourself a decadal timescale. Prepare to be surprised and delighted by what you find. Remember: it’s not all about ‘you’: the world is a fabric of other lives, from slugs to hedgehogs, frogs to daisies, and your lawn is part of the tapestry which makes theirs possible. Make space for nature, and remember that there is nowhere on Earth that we can take wildlife for granted any more. You have a scrap of our planet in your care.

A small hay meadow in the making - first growth of grasses Alopecurus pratensis, Arrenatherium elatius, Dactylis glomerata, Lolium perenne, Poa trivialis, Poa pratensis and others, May 2022



REFERENCES

Lake, S. et al 2020. Britain’s Habitats. Princeton University Press.

Rackham, O. 1987. The History of the Countryside. J.M. Dent & Sons Ltd.

Yalden, D. 1999. The History of British Mammals. T & AD Poyser Ltd.



Monday, 4 May 2020

Clinging On

As the human world reels under the malign influence of Coronavirus, my thoughts turn to Cretaceous barnacles. 

This sudden interest in extinct cirripedia is prompted by a paper published a month ago by Professor Andy Gale: New thoracican cirripedes (Crustacea) from the Cretaceous of Europe and North Africa.[1] It announces the discovery of new extinct genera and species of barnacle. There are two sorts: the acorn/wart-type (sessile) barnacles familiar from rocky shores and the stalk-type (pedunculate) 'goose barnacles' sometimes found attached to drift wood. 


I have never really thought about these crustacea before. They are easily overlooked - that is until you gash your hands or feet on them at the seaside, or eat them in a Portuguese restaurant. What crystallises my interest in them now is that one of the Zeugmatolepadid family now bears my name: Subsecolepas holtwilsoni. It is a lepadid barnacle - one of the stalked type. My thanks go to Andy for the honour. I think i
ts taxonomic status is:
Phylum - Arthropoda
Clade - Mandibulata
Clade - Pancrustacea
Subphylum - Crustacea
Class - Maxillopoda
Infraclass - Cirripedia
Superorder - Thoracica
Order - Pedunculata
Suborder - Scalpelliformes
Clade - Thoracicalcarea
Family - Zeugmatolepadidae
Subfamily - Martillepadinae
Genus - Subsecolepas
Species - holtwilsoni 
Andy Gale is one of a very small band of palaeontological researchers active in the field of fossil cirripedes. Their most illustrious forebear is Charles Darwin. Thomas Withers was active from 1910 to the 1960s, and catalogued the fossils specimens at the Natural History Museum, London. " There can be no doubt the Wither's 'Catalogues' are to fossil lepadomorph and verrucomorph barnacles what Darwin's 'Monographs' are to Recent barnacles."[2] Andy has been one of the most prolific cirripede researchers in recent decades, focusing on the Cretaceous Chalk and publishing many papers. He says that S.holtwilsoni is common in chalk of the Upper Campanian stage in the UK, and that 400 fossil specimens have been found at various old pits in the Norwich area. He named it after me for helping him dig in these pits and for having been involved in their conservation, including Keswick, Catton, Cringleford and Whitlingham.

Collecting samples at Keswick, 2015


I have not visited any chalk pits lately. Britain today is in emergency 'lock-down', and I feel sorry for city-dwellers cooped up in flats and terraced houses. At least I have an extensive wildlife garden to ramble in, and I also enjoy exploring the meaning of our geological heritage.

Crustaceans of the Campanian seas are a great imaginative diversion - a dépaysement, as the French say. Geology and palaeontology call us out of our own time and down into the profound depths of planetary and biological evolution. I try to imagine the lifeworld of the extinct species that now bears my name.  


Here are photos of the type specimens of S.holtwilsoni, variously sourced from chalk pits at Keswick and Cringleford, and all are now archived in the Natural History Museum. They show elements of the set of hard, calcareous plates which enclose the head of the barnacle. 



Type specimens of Subsecolepas holtwilsoni. Image courtesy Andy Gale [1]



Stalked barnacles from JG Wood: 'The Illustrated Natural History'; Routledge, London, 1863

Darwin's drawing of a Middle Jurassic stalked barnacle Pollicipes concinnus,
as found attached to the shell of an ammonite.[3]


Contemporary stalked barnacles attach themselves to floating objects, particularly driftwood, turtles and ships. According to Andy Gale, S.holtwilsoni and other Zeugmatolepadids probably had a similar lifestyle, attaching to the shells of free-swimming ammonites and seabed-dwelling inoceramid bivalves as well as floating wood.[1, p.245] There must have been a steady rain of their plates falling into the carbonate-rich mud of the sea floor, perhaps 100 to 500 metres down.[4] 

The Campanian stage spans from 83.6 to 72.2 million years ago.[5], and chalk of this age is well-represented in Norfolk and Suffolk. I have visited many quarries of this period in the Gipping valley and Norwich areas. At Keswick and Cringleford I helped clear the chalk exposures so that Andy Gale could record the geological succession and take samples. The samples are treated with glauber's salt and freezing in a repeat process until the miniscule fossil fragments - echinoid spines, bits of coral, fish scale, shell, etc - are freed from their chalky matrix and can be examined under a microscope.  


Fossil residues from the Chalk (40x magnification)
  
The contrast between the physical reality of an old chalk pit, with its crumbly, scrub-infested chaos, and the clarified world of knowledge compiled by over 150 years of scientific research into the Chalk is remarkable. We now know much about the Earth's geography during the Campanian, for example that Europe was an archipelago of islands.[6] We know much about biodiversity and details of climate and chemistry.[7; 8]  
 
The world as it was in the late Cretaceous. Image courtesy Andy Gale [1]

All this is wonderful, radical stuff to explore during COVID-19 lock-down. Like astronomy, geology has the power to frame human life against an almost infinite scale of time and space. Like pedunculate cirripedes, we cling for a few seasons to our floating attachment points and then - like them - our debris will inevitably find its way to the metaphorical sea floor. Perhaps only our names, inscriptions and genetic coding will survive us, for a century or two at most. The history of taxonomic revision makes clear that not even species names backed up with diligent taxonomic description may be proof against time. 






REFERENCES

[1] - Gale, A.S. New thoracican cirripedes (Crustacea) from the Cretaceous of Europe and North Africa. Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen Band 295 Heft 3 (2020), pp.243-282. [Link accessed May 2020]
[2] - Southward, AJ. Barnacle Biology. CRC Press, 1987; chapters 2.1 and 2.2.
[3] - Darwin, CR. A monograph on the fossil Lepadidæ, or pedunculated cirripedes of Great Britain. Palæontographical Society, London, 1851 Plate 3, Fig.1. Downloadable here. [Link accessed May 2020]
[4] - Rawson, PF. Cretaceous: Sea Levels peak as the North Atlantic Opens, in: Brenchley, PJ & Rawson, PF (eds). The Geology of England and Wales. The Geological Society, 2006; 2nd Edition. 
[5] - Lee, JR, et al (eds). British Regional Geology. East Anglia. British Geological Survey, Fifth Edition, 2015.
[6] - Csiki-Sava, Z et al. Island life in the Cretaceous - faunal composition, biogeography, evolution, and extinction of land-living vertebrates on the Late Cretaceous European archipelago. Zookeys, no.469, January 2015, pp.1-161. [Link accessed May 2020]
[7] - Jarvis, I, et al. Late Cretaceous (Campanian) carbon isotope events, sea-level change and correlation of the Tethyan and Boreal realms. Palaeogeography, Palaeoclimatology, Palaeoecology, no.188, 2002, pp.215-248.
[8] - Skelton, PF et al (eds). The Cretaceous World. The Open University / Cambridge University Press, 2003.

THANKS TO
  • Andy Gale, for naming the extinct beastie.
  • Gilbert Addison, for suggesting the title of this article.

Saturday, 4 April 2020

A Blackthorn Spring

Cold winds easterly have been blowing across East Anglia for the past week, though temperatures are set to rise this weekend.  Blackthorn blossoms are flourishing in this 'blackthorn spring': their froth of cold, white flowers starting out of the rattling, winter blackness of branch and twig.



Prunus spinosa, is respected by country dwellers for its fruit (sloe gin), its hard, durable wood and particularly for its long, piercing thorns like stiletti. They are able to pass straight through clothing, gloves and even boot soles and car tyres - things I know from experience.

I now have a terrible story to relate. It was told me by my friend C. and began about a month ago when her boyfriend D. was working in a Suffolk wood. Blackthorns make bristling thickets that require careful handling. Even though he was wearing goggles, a chance branch whipped his forehead and embedded a spine in his brow down to the bone. Naturally he pulled it out, but that evening redness and swelling set in, followed later by deep inflammation. Over the following days his condition worsened as his head swelled up and he became very unwell, with symptoms similar to sepsis (blood poisoning). Luckily neighbours noticed his silent home and telephoned C. She drove over immediately and what she found appalled her; a man in delirium, shivering with fever, with a necrotic lesion on his forehead. He was taken to hospital by ambulance and given intensive care. Over the next few days the hallucinations faded - at one time he said he thought his bed was surrounded by tall trees - and his temperature subsided. It was evident that he would need a skin graft to repair the damage, but this would have to be delayed because the hospital had started dealing with a flood of Coronavirus casualties. That is the situation now: D. is waiting and convalescing, wearing a head bandage and lucky to be alive.



What is it about blackthorn that makes it wound so grievously?

A look through my bookshelf did not turn up much useful information.
"A scratch from the thorns would cause blood poisoning. This was thought to be because Christ's crown of thorns was made from it".(1)
"Long associated with dark forces".(2) 
"Other tannin-rich barks were also used [for making inks] particularly those of blackthorn ...".(3)
A trawl through the WWW was more promising.
"On Tuesday evening I was scratched on the hand by a blackthorn, not deeply, but enough to draw blood. Fortunately, I know about blackthorn poisoning: it can be very unpleasant. A piece of blackthorn burying itself under the skin might cause severe infection, blood poisoning, swelling and pain. If left too long before treatment, amputation might be the result. Blackthorns are covered in unpleasant bacteria. If you have a piece buried in your flesh, the best course of action is to get yourself off to the hospital if you have a rapidly escalating and unpleasant reaction; don’t leave it until the area around the wound turns black. My light scratch was reacting badly to the blackthorn toxins within 5 minutes. I sprayed the area liberally with surgical spirits on my return home, which quickly reduced the angry redness and swelling. I woke in night with the swelling raging ... ".(4) 
A comment was appended to this blog post: "Our friend has just died from black thorn poisoning. Thought it was flu …".(5)
"Years ago I ignored a blackthorn wound. Within a week I had a red line running from the inside of my wrist to my elbow warning of the onset of sepsis".(6) 
"Blackthorn injury can give rise to a wide variety of manifestations ranging from mechanical dermatitis, cellulitis, abscess, foreign body granuloma, peritendinitis, tendinitis, pericapsulitis, synovitis to acute septic arthritis. Human synovial tissue is very prone to react to organic substances like blackthorns. Removal of the blackthorn fragments causes prompt resolution of the inflammation".(7)

It is clear that blackthorn wounds can be dangerous, particularly if remnants of thorn are left in the wound. I think D.'s injury was down to more than just a bad-luck thorn-prick.
"Why do [blackthorns] cause so much trouble? Clinical research undertaken at Oakham suggests that the painful tissue reaction to blackthorn injury is not caused by infection. In fact, contrary to popular belief among the equine veterinary community, the joint is sterile after a thorn penetration. The substances that make blackthorns black are alkaloids, and this thorn contains more alkaloids than other plants. Our research indicates it is this that causes the severe tissue reactions".(8)
The website 'Botanical Online' in its 'Blackthorn Toxicity' page states that the toxic principles of blackthorn are: prussic acid (seeds, bark, leaves); hydrogen cyanide (seeds); tannins. Anecdotal evidence from online discussion forums suggests that the blackthorn is particularly poisonous during the growing season.



So, I suggest that what makes a blackthorn wound so grievous is that the bark and thorns at this time of the year are exuding small quantities of plant toxins known as cyanogenic glycosides, notably hydrocyanic acid (HCN, aka prussic acid), "one of the most toxic of all plant compounds. ... The occurrence of cyanogenic glycosides is widespread. Amygdalin and prunasin are very common among plants of the Rosaceae, particularly the Prunus genus".(9) Oakham Veterinary Hospital is probably wrong about alkaloid poisoning: the blackness is caused by tannins, and the toxicity is caused by HCN. The presence of other pathogens such as bacteria from bird muck may play a secondary role, although I imagine most humans and other animals have a measure of immunity against them.

HCN has been tested as a chemical weapon to be absorbed through the skin. According to a Wikipedia, a concentration of 2000 ppm will kill a human in about one minute. "The toxicity is caused by the cyanide ion, which halts cellular respiration by acting as a non-competitive inhibitor for an enzyme in mitochondria called cytochrome c oxidase".  Basically, it kills cells. No wonder D. suffered toxic shock and now has a necrotic lesion on his head.

According to the University of Maryland, "All 400-plus Prunus species are toxic to livestock. ... The most commonly recognized species are the stone fruits: cherries, peaches, plums, almonds, apricots, and nectarines. All parts of the plant are toxic except the mature fruits. ... Hydrogen cyanide acts as a poison by preventing red blood cells from releasing oxygen".(10)

I think I now understand how D. came to be so badly affected by a single puncture wound. Fragments of thorn are likely to have released HCN which led to localised cell death, followed by toxic shock from sepsis and a dermal necrosis. His immune system struggled to cope with the chemical arsenal of Prunus spinosa, and also probably the effects of some bacteria and algal detritus.

I think it would be worth somebody researching more about HCN in blackthorn For instance, I'd like to know whether it is the live or dead thorns that do the most damage. The results would be worth publicising for farmers, gardeners and any other outdoors people likely to encounter this baleful, though attractive and interesting, bush. 




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SOURCES

(1) - R. Vickery (ed.). 'Unlucky Plants - a folklore survey'. Folklore Society, 1985.
(2) - Tess Darwin. 'The Scots Herbal'. Mercat Press, 1996.
(3)  - Richard Mabey. 'Plants with a Purpose'. Collins, 1977.
(4)  - Michael Griffiths. 'Blackthorn Poisoning. A warning'. The Wilden Marsh Blog, 3-12-2015.
(5) - Ibid, comment from 'Debra', April 17, 2018.
(6) - John Shelley. 'Nature. A Thorny Issue'. The Mayo News, 1 April, 2014.
(7) - H Sharma & AD Meredith: 'Blackthorn injury: a report of three interesting cases'. Emergency Medical Journal, vol.21, no.3, April 2004.
(8) - Oakham Veterinary Hospital, online: 'Blackthorn injury in hunters / sport horses'.
(9) - Andrew Pengelly. 'The Constituents of Medicinal Plants'. Allen & Unwin, 2009; pp.44-45.
(10) - Sara BhaduriHauck. 'Toxic Plant Profile: Prunus Species'. University of Maryland Extension, 3-8-2015.

All online sources accessed April 2020.

Text and pictures © TD Holt-Wilson, April 4th 2020.

Sunday, 4 February 2018

A Red Crag whale

A fossil whale vertebra can be a beautiful thing. I was delighted when a friend gave me one he'd found on Landguard beach, near Felixstowe, south-east Suffolk.




The front (anterior) side of the specimen still has its flat articular surface, but the back (posterior) side has been worn away by the sea. There are two projections on either side. These are the eroded bases of the bony projections supporting the neural arch.

Thoracic vertebrae of Greenland right whale, showing
centrum and bones of the neural arch.
Image courtesy Eschricht & Reinhardt (1866)
Given its findspot, a Red Crag origin for the specimen is likely. It must have been washed out of the Red Crag strata which outcrop in the Felixstowe area. The town is founded on these reddish-yellow, sandy, fossiliferous sediments of Pliocene age about 2.5 million years old. They also outcrop to the north at Bawdsey and to the south at Walton-on-the-Naze, Essex.

My first exposure to whale fossils was when I was working on the geological collections at Ipswich Museum in 2004/05. There were racks and boxes full of Crag specimens like this, but very few of them had any firm identification. Spencer (1970) recounts everything known about the Crag cetaceans in Ipswich Museum.


I contacted the Natural History Museum in London to see whether I could find out more. Dr Travis Park, a fossil cetacean specialist, gave helpful replies to my questions.
It is a partial thoracic vertebra from either a small baleen whale or a big toothed whale... it's likely [to be] either an anterior or mid-thoracic. ... 
In terms of size, it’s probably closer to something in the 5-10 metre range. That’s a very rough estimate given the degree of wear of the specimen. So it could be a small sperm whale or one of the beaked whales which easily get that size and even bigger. If it’s a baleen whale then a minke whale would be a good proxy although there was quite possibly other small baleen whale lineages around at that time too. 
It's unfortunate that the specimen is so worn as to make it impossible to narrow down to Order level (mysticete or odontocete), let alone Family. Still, it's an attractive thing to have on my shelf, and it prompts me to find out more about the cetaceans of our beautiful 'Blue Planet' as they were in the Pliocene.




References
  • Eschricht, DF & Reinhardt, J. 'On the Greenland Right Whale Balaena Mysticetus. In: Flower, WH (ed). Recent Memoirs of the Cetacea. Ray Society, London, 1866.
  • Spencer, HEP (1970). A Contribution to the Geological History of Suffolk. Part 5. The Early Pleistocene. The Crag Epochs and their Mammals. Transactions of the Suffolk Naturalists’ Society, vol.15, pt. 4.
For further information about the geology of the Suffolk coast see my booklet 'Tides of Change' (2015).

Wednesday, 31 January 2018

Land gulls


Two 80-acre fields at Cookley, near Halesworth, with winter wheat
(shades of yellowish green, blueish green)
on clayland, undulating, empty - just the crop, the soil, the flint.

Setting for a cold wind.

January the last.



Beyond me in space: white gulls.

Gulls in flight, over the field's face, roving. A few standing, breasting the sun.

White owls over a green sea.







A skylark sings, aloft. 

The gulls think downward. Raised on ocean-space and sprats, they turn to terrestrial matters: beetles and worms. 

All beneath a milky, blue and infinite sky.



They flutter to and fro: staring, stopping, turning to drop and rise - a mere second or two. Focused then refocusing. Steady meditation. Body thinking. Time.

How many are there – forty or fifty? 

But who watches gulls - those dustbins of the bird world!?



One could map their delicate trajectories: a script of white on green. Their nodes and lines, objectified. 

Instead, each bird enters my vision, enters my thoughts. 

In this moment each one enters my heart.



Their wavering flights criss-cross my sight in a ceaseless, white-winged ballet. 

They catch the sun, like dew on wheat and roof-lines in distant villages. 

Land gulls.





Sunday, 30 April 2017

The Wisdom of Solomon

It is Spring, and flowers appear on the earth, the time of the singing of birds is come, and the voice of the turtle dove is heard in our land.[1]

Sadly I expect turtle doves will be in short supply this year, despite the best efforts of bird conservation organisations, Chris Packham et al to explain the catastrophic decline of this species - along with the cuckoo and other precious summer visitors. According to Project Turtle Dove, its numbers have plummeted by 91% since 1995.[2] Cuckoos have declined by 65% since the 1980s.[3]

Instead, the voice of the lawn-mower is heard in our land, as some people strive to achieve uniform, level, striped surfaces. I suppose such lawns are the outdoor equivalent of a plain fitted carpet. The result is just lawn. It is not even 'lawn with flowers', or 'lawn with flowers and bees', or 'lawn with flowers, bees, ants and moles'. Lawn means lawn. It is monoculture.

Here is an example of a lawnista's approach to gardening.[4]






I'm delighted to have some of these species on my lawn. What is a weed?

About 15 years ago, the Bungalow garden was visited by a local TV reporter. Somehow she had discovered a web page I'd made explaining that I have notable biodiversity here, including
Testacella haliotidea, a rare carnivorous, subterranean slug living in the vegetable patch. As we wandered round the garden trying to find the slug I wittered on about the wildlife, for instance the seven species of grass and sedge I have identified on the lawn, and its notable anthills. She then asked why I did not destroy the ants. They are "bad for lawns", she said. I was dumbfounded. I did not know what to say. I didn't say how much I love watching green woodpeckers probing around in the anthills or that all the piled up earth must indicate the existence of a phenomenal network of subterranean tunnels. I fell silent, struggling with my disgust at her question.




I feel a similar disgust when I see uniform lawns. A biodiverse lawn is more useful to birds, mammals, insects and plants; it has more ecological value. From a biosemiotic point of view, a biodiverse lawn is more meaningful than a monocultural one because it intrinsically contains more encoded 'difference', and hence more meaning. In my eyes that makes it more beautiful. Where a card-carrying lawnista might see disorder I see beauty and a wealth of meaning - and my heart rejoices. This wealth is not just there for me to perceive but for many other organisms to thrive in, as they search for home habitat and food. This is a shared world.

I suspect the lawn here is the last remaining fragment of the ancient parkland surrounding Brome Hall. The rest was been ploughed up many decades ago.

Uniform lawns are instances of the tide of biocidal monoculture flooding through the world. Rainforests are being replaced by plantations.[5] Faced with this creeping impoverishment of biological meaning, I invite all lawn owners to cherish their biodiversity in practical ways. For instance, wait a few weeks before first cutting, and see what species are already present. (It was only after doing this that I discovered I had two orchid species.) Don't use fertilisers or herbicides. Use a rotary mower with a grass box. Leave areas uncut until later in the summer and cut other areas in rotation. Don't kill all moles. 

Perhaps we should also go out and buy a kelim or Isfahan rug for the house - one featuring a Tree of Life or floral design !


Lesser Celandine
Spotted Orchid

As a joke currently doing the rounds has it, God and St Francis would surely approve of both designs.




FOOTNOTES

[1] - The Song of Solomon 2.12.
[2] - Project Turtle Dove - http://www.operationturtledove.org/ [accessed April 2017]
[3] - 'Cuckoo decline' - https://www.bto.org/volunteer-surveys/bbs/research-conservation/cuckoo [accessed April 2017]
[4] - Lawn Weeds website - http://www.lawnweeds.co.uk [accessed April 2017]
[5] - 'The Impact of Industrial Agriculture in Rainforests' - http://rainforests.mongabay.com/0811.htm  [accessed April 2017]



Sunday, 5 June 2016

Pholcus

Spider life continues at the Bungalow, and so does my ongoing campaign to keep it under control. I first realised I had problem in August 2013, returning from a French holiday and shocked to find the house had become a havishambling cat's cradle of  webbery. I'm talking about Pholcus phalangioides - the daddy-longlegs spider, spindly and twizzling when touched - not the trad house spiders Tegenaria atrica - large, brown, leggy gallopers. When the cat's away, the pholcids will play. Webs were everywhere, and a shocked awareness that my fortnight's absence had provided them with a wonderful opportunity to make jamboree. The work began: removal with plastic cup & postcard or - at my most ruthless - vacuum suction.




Today, June 4th 2016, I have removed three more specimens: a hen with egg sac from the bathroom, a small male from the spare room and a large male from the lobby (see photo). They were not there yesterday. I have learned pholcid habits. They lurk about unseen among the furniture - "in undisturbed, low light locations", as one website puts it [1] - until something (pheromones?) prompts them to rise: they climb up the wall then begin optimistically to spin next to the ceiling. That is when they become visible and removal become practical. The vacant space is likely to become filled again within a week, as natural territorial recruitment proceeds. Small spiders are so diaphanous that they are almost invisible in the shadows. It is best for me to wait until they rise - then cup them. It has become a form of domestic sport. All of them are taken out into the garden and released. Presumably the new environment is a bit of a shock to their system, as pholcids are a family preferring warmer climes, only holding on in Britain thanks to hospitable caves and anthropogenic living spaces. "Pholcus inhabits houses where the average temperature throughout the year exceeds 50ºF (10ºC)." [2]

Yesterday I removed another hen with eggs and two small males. The day before that, one specimen; the previous day, three. The removal process has been proceeding smoothly, even through the winter when one might expect them to be a bit less active. The temperate atmosphere in the Bungalow seems to suit them in all seasons. Last year I reckoned I had been removing anything from between one and as many as six spiders per day. Given a rough average of three per day, that made a sporting total of 365 x 3, an estimated 1095 individuals. Removals have proceeded at the same rate this year. Going back to 2013, I am looking at a running total of over 3,000.

Although pholcids have their place in the ecology of the Bungalow (for one thing, they are efficient predators of house spiders, which I don't like), my sporting campaign will continue. Even if I move house I dare say one or two of them will follow me somehow, and begin again their attempt to spin wispy chaos in my domestic world.


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References

1 - Animal Diversity Web
2 - British Arachnological Society

Saturday, 21 June 2014

Jackdaws at Midsummer

June 21st, 2014

It was a fine day last Thursday. Wisps of cirrus and dispersing vapour trails drew a light veil over the blue sky. The business of jackdaws in the trees behind my house reached a climax that afternoon.

Blue-skies flocking


I call this land behind the Bungalow the Wilderness: a domain of brambles, nettles, elders and elm suckers, which may once have been a field. Muntjac and rabbits skulk there, and the blackcap sends out jets of pure lyric beauty in summer. Its eastward boundary is a long, thin rectangular pond of mediaeval date shrouded by tall oak and ash trees. The pond brims up in winter, but soon shrinks away leaving a blackened pit of detrital mud. For some reason the local jackdaws have made this belt of trees their focus for the last fortnight.

Ask Konrad Lorenz what jackdaws have to say. His years of study at Altenberg  identified a range of calls such as kia, kiaw, zick and yip, also rattles and churrs. Kia means 'let's fly abroad' and kiaw means 'let's fly home' [1]. Karrr means 'threat'; the main flight call is a cheerful, 'metallic and squeaky' chyak.
For the past two weeks a chorus of kia and chyak has been ringing from the belt of trees and swirling round the neighbourhood. When it started I assumed that a nest of jackdaws had fledged from a hole in one of the trees, perhaps the largest oak, with much joyous 'let's fly abroad' communication. They were then joined by other local families, perhaps from the grounds of Ivy House three hundred yards away, where several mature oaks contain nest holes.


Lately, all the families have joined together in a rabble of playful exploration. They fly around the estate in loose, shifting flocks, calling to each to each continually, circulating among leafy ash summits and stag-horned oaks. Some drop to the sheep field and forage for insects in the close-cropped turf. Others scramble about among the branches hoping to be fed. They seem to be living a swirl of impulses, like children crying out "let's do [such & such]", then waiting to see how the collective will picks up the idea and runs with it. 

 From Wood's 'Natural History. Birds' (London, 1864)
'Fly with me' call-notes, says Lorenz, are "purely indicative of the mood of the bird in question and are in no way a conscious command. These completely unintentional expressions of individual feeling are as of highly infectious a nature as yawning in human beings. It is this mutual mood-infection which ensures that all the jackdaws finally act concertedly" [3]. So the swirl of activity among the jackdaws here seems to be flickering of moods and social conjugations, testing out ideas and linkages, coming to decisions then abandoning them - in fact, classic teenager activity. I think my jackdaws are learning and testing out their life skills. I have watched a begging fledgling being instructed by a parent how to get food from sheep droppings.

On Thursday afternoon the mood was extremely expansive: the jackdaws wanted to be up and flying high. Loose flocks were forming and reforming aloft, riding the thermals - splitting and diving, rising and swapping, overlapping. I took my binoculars and watched them, enchanted. The sky was alive with kia and chyak, pealing from lofty distances. Black specks approaching from the south resolved into four individuals drawn from further afield, the parish of Eye. They passed overhead, ignoring the largest cluster of their fellows, before breaking down and entering a group. This commotion was attracting attention, and a few rooks had come to investigate as well as me.

There are 72 jackdaws in this photo. Many more are out of view to the left.

Lorenz spent years fostering and studying a jackdaw colony at Altenberg. Here in the parish of Brome and Oakley, I suspect several families have lately been raised in this attractive, wooded corner of Suffolk. For some reason they have now made the land round the Bungalow their flocking place; in previous years the wooded belt has only yielded carrion crows. This year it has hosted jackdaws. I am worried that my neighbours will classify them as a nuisance, and try to drive them away by shooting a few. I can't see the point, as they are very companionable birds, 'of infinite wit and humour, and one that has an extraordinary attachment for man and his habitations' [4]. Studies have shown that each mates for life [5].

High on the stag-headed oak in the Bungalow garden today, a few jackdaws are busy socialising. One catches sight of me looking up from far below and gives a karrr alarm call; they take flight. Ten seconds later the bare branches of the tree are occupied by more individuals. I am part of their perceptual universe, as they are of mine. I doubtless signify 'non-jackdaw' and 'predator' to them, but for me they signify 'companion' and 'friend'. They are part of my community, and the fact that they have chosen the Bungalow area as 'significant place' pleases me. I like to think that they see it as a secure place for bringing up young, a 'magical environment' as Jacob Von Uexküll might have put it [6], though I am afraid a few gunshots from my neighbour could change all that.






References

[1] - Lorenz, K (1952): King Solomon's Ring. New light on animal ways; Methuen & Co, Ltd, London; p.169.

[2] - Western Jackdaw; Wikipedia - http://en.wikipedia.org/wiki/Western_jackdaw#Breeding [accessed June 2014]
[3] - Lorenz, ibid; p.170.
[4] - Wood, JG (1864): The Illustrated Natural History. Birds; Routledge, Warne & Routledge, London; p.398.
[5] - Western Jackdaw; ibid.
[6] - Uexküll, Jacob Von (2010): A Foray into the Worlds of Humans and Animals; University of Minnesota Press; p.119 ff.