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	<title>Twiglog &#187; Landscape Forensics</title>
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	<description>A glance leaves an imprint on anything it's dwelt on</description>
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		<title>Providence</title>
		<link>http://struangray.com/twiglog/2009/05/22/providence/</link>
		<comments>http://struangray.com/twiglog/2009/05/22/providence/#comments</comments>
		<pubDate>Fri, 22 May 2009 19:35:54 +0000</pubDate>
		<dc:creator>struan</dc:creator>
				<category><![CDATA[Landscape Forensics]]></category>

		<guid isPermaLink="false">http://struangray.com/twiglog/?p=245</guid>
		<description><![CDATA[ 

Bernhard Edmaier  Reef, Conception Island, Bahamas


When I am asked what super-power I would wish for (a question that comes up surprisingly often) I always chose the ability to fly.  X-ray vision, super-strength or infinite flexibility have a certain novelty charm, but flying would satisfy a deep pleasure that has been with me since childhood.  I love [...]]]></description>
			<content:encoded><![CDATA[<p style="text-align: center;"> </p>
<p style="text-align: center;"><img class="aligncenter size-full wp-image-278" title="bernhard_edmaier_reef" src="http://struangray.com/twiglog/wp-content/uploads/2009/05/bernhard_edmaier_reef.jpg" alt="bernhard_edmaier_reef" width="500" height="500" /><a href="http://www.geophot.com/" target="_blank"></a></p>
<p style="text-align: center;"><a href="http://www.geophot.com/" target="_blank">Bernhard Edmaier</a><em>  </em><em>Reef, Conception Island, Bahamas</em></p>
<p style="text-align: center;"><em><br />
</em></p>
<p>When I am asked what super-power I would wish for (a question that comes up surprisingly often) I always chose the ability to fly.  X-ray vision, super-strength or infinite flexibility have a certain novelty charm, but flying would satisfy a deep pleasure that has been with me since childhood.  I love literally looking down.</p>
<p>There are aesthetic and intellectual pleasures to be had from a high viewpoint, as well as the sheer physical thrill of defying a natural law as fundamental as gravity.  The world is reduced to pure patterns, and those patterns can be read, puzzled over, wondered at, and understood.  Structures and relationships which are only vaguely grasped on the ground become self-evident once you see them from above, and the puzzling exceptions let you play at being an NSA imagery analyst as you figure them out.</p>
<p> </p>
<p style="text-align: center; "><img class="size-full wp-image-270 aligncenter" title="met_nadar_wife_balloon" src="http://struangray.com/twiglog/wp-content/uploads/2009/05/met_nadar_wife_balloon.jpg" alt="met_nadar_wife_balloon" width="500" height="575" /></p>
<p style="text-align: center; ">Nadar  <em>Nadar and his wife in a balloon</em></p>
<p style="text-align: center; ">From the <a href="http://www.metmuseum.org/works_of_art/collection_database/photographs/nadar_with_his_wife_ernestine_in_a_balloon_nadar/objectview_enlarge.aspx?page=1164&amp;sort=0&amp;sortdir=asc&amp;keyword=&amp;fp=1&amp;dd1=19&amp;dd2=0&amp;vw=1&amp;collID=19&amp;OID=190039654&amp;vT=1" target="_blank">Metropolitan Museum</a></p>
<p style="text-align: center; "> </p>
<p>Aerial photographs have been popular and newsworthy at least since Nadar and his wife crashed their balloon. <a href="http://www.earthfromabove.com/" target="_blank">Yann Arthus-Bertrand</a> has created a commercial juggernaut out of his easy on the eye views, and there is a regular flood of &#8220;XXXX From The Air&#8221; books covering every location and price point.  I love them all, unreservedly, but in addition to the purely commercial photographers there are those who use the &#8216;wow&#8217; factor of aerial photography to draw the viewer into a more subtle world.</p>
<p>Arthus-Bertrand, for example, seems incapable of shaking off an invisible little camera club judge, and habitually places a dollop of human interest exactly where the rule-of-thirds would dictate.  It gets tiresome after a while, and I prefer photographers like <a href="http://www.geophot.com/" target="_blank">Bernhard Edmaier</a> or my favourite Swedish nature photographer <a href="http://www.hansstrand.com" target="_blank">Hans Strand</a> who stick with the gorgeous palette and sublime mood of mainstream commercial aerials, but have the nerve to create truly abstract images.</p>
<p> </p>
<p><img class="aligncenter size-full wp-image-263" title="emmet_gowin_wateringhole" src="http://struangray.com/twiglog/wp-content/uploads/2009/05/emmet_gowin_wateringhole.jpg" alt="emmet_gowin_wateringhole" width="500" height="513" /></p>
<p style="text-align: center; ">Emmet Gowin  <em>Dry Watering Hole, Magdalena, New Mexico 1998</em></p>
<p style="text-align: center; ">From <em><a href="http://photoeye.com/bookstore/mShowDetailsbycatAmazon.cfm?Catalog=YU043&amp;i=0300093616" target="_blank">Changing the Earth</a></em></p>
<p style="text-align: center; "><em><br />
</em></p>
<p>And then there are the self-aware Art photographers.  Often, their work suffers from a somewhat negative categorisation as issue driven, a labelling process helped by today&#8217;s universal need to back up a project with a predetermined concept, but for me at least the attraction is as much aesthetic as idealistic.  Photographers like <a href="http://photoeye.com/bookstore/mShowDetailsbycatAmazon.cfm?Catalog=YU043&amp;i=0300093616" target="_blank">Emmet Gowin</a> and <a href="http://www.davidmaisel.com/" target="_blank">David Maisel</a> have indeed found ways to be critically interested in land use without the self-indulgence of a strident hatchet job, but they also use composition and form in less than obvious ways, and Maisel&#8217;s sense of colour, strong yet nuanced, never fails to impress.</p>
<p> </p>
<p><img class="aligncenter size-full wp-image-279" title="david_maisel_mine" src="http://struangray.com/twiglog/wp-content/uploads/2009/05/david_maisel_mine.jpg" alt="david_maisel_mine" width="500" height="500" /></p>
<p style="text-align: center; "><a href="http://www.davidmaisel.com/" target="_blank">David Maisel</a>  Mining Project 5 (Butte Montana)</p>
<p style="text-align: center; ">From <em><a href="http://www.davidmaisel.com/works/picture.asp?cat=min&amp;tl=the%20mining%20project">The Mining Project</a></em></p>
<p style="text-align: center; "><em><br />
</em></p>
<p>As photography though, even the art aerials are stuck in the early 1860s: everything in focus, everything comprehensible (if a little abstract), and all the emphasis on the thing photographed, not on the process of photography, or the mental state of the photographer, or any of the other favoured tropes of the contemporary schools.  In many ways it is a relief to enjoy such uncomplicated depiction, but it would also be interesting to see counter examples.  My own memories of the insides of small planes and helicopters are heavily coloured by noise and vibration and it would be instructive to incorporate the photographic environment into the resulting photographs.  Aerial photographs remind me in many ways of those wildlife films where the world&#8217;s most honed predator stares straight into the camera while the script doggedly pretends to observe without influencing.  I suspect most people feel helicopter time is just too expensive to waste on blurry pictures, but that, in a sense, is my point.</p>
<p>In any case, barring a lottery win or an encounter with a radioactive insect my work is unlikely to pose a challenge to any of these photographers for the foreseeable future.  However, I can play at least some of their games with the help of online mapping websites.  <a href="http://maps.google.com/" target="_blank">Google</a> is the biggest, but until recently their datasets placed no less than three of my favourite places under heavy cloud cover, so local variants like <a href="http://www.hitta.se/LargeMap.aspx" target="_blank">hitta.se</a> or the UK&#8217;s <a href="http://www.multimap.com" target="_blank">Multimap </a>have also received heavy use.</p>
<p>It began when I spotted a jewel of a star fort while somewhere over The Netherlands on a flight to the UK.  Pre-internet I would have enjoyed the view, perhaps asked a few of my Dutch colleagues if they knew what I had been looking at, and left it at that.  However, I can now re-trace my route in Google Maps, <a href="http://maps.google.com/maps?t=k&amp;q=53.016667,7.183333&amp;ie=UTF8&amp;ll=53.006766,7.191625&amp;spn=0.004668,0.010042&amp;z=17" target="_blank">find the fort</a>, look at ground-based photos, and having deduced its name from the <a href="http://images.google.com/images?hl=en&amp;sa=1&amp;q=bourtange&amp;btnG=Search+Images&amp;aq=f&amp;oq=" target="_blank">photo captions</a>, check out its <a href="http://en.wikipedia.org/wiki/Bourtange" target="_blank">Wikipedia entry</a> and look for articles in <a href="http://www.jstor.org/action/doBasicSearch?Query=bourtange&amp;x=0&amp;y=0&amp;wc=on" target="_blank">learned journals</a> about its history and use.  Oh brave new world.  The only inefficiency in the process is finding the proper names of things once you have their coordinates.</p>
<p>Things can get out of hand.  When reading <a href="http://www.amazon.co.uk/Landscape-Memory-Simon-Schama/dp/0006863485/" target="_blank">Simon Schama</a> on <a href="http://en.wikipedia.org/wiki/Arminius" target="_blank">Hermann the German</a> and his slaughter of three Roman legions I ended up bingeing on a two-day trawl through <a href="http://en.wikipedia.org/wiki/Battle_of_the_Teutoburg_Forest" target="_blank">Teutoburger Wald </a>ephemera.  Still, with the help of wiki-hindsight the facts on the ground are easily tallied with grim historical reality, and the <a href="http://maps.google.com/maps?t=k&amp;q=52.410556,8.129444&amp;ie=UTF8&amp;ll=52.446489,8.155804&amp;spn=0.083388,0.138016&amp;z=13" target="_blank">fatal bog</a> that hemmed in the doomed Roman column is still clearly visible as a rosette of post-drainage field boundaries.</p>
<p> </p>
<p><a href="http://struangray.com/twiglog/wp-content/uploads/2009/05/siberia_glacier_tundra.jpg"><img class="aligncenter size-full wp-image-266" title="siberia_glacier_tundra_sm" src="http://struangray.com/twiglog/wp-content/uploads/2009/05/siberia_glacier_tundra_sm.jpg" alt="siberia_glacier_tundra_sm" width="500" height="309" /></a></p>
<p style="text-align: center; "><em>Oxbows, kettle holes and pingos</em></p>
<p style="text-align: center; "><em><span style="font-style: normal; ">Click the image, or go to <a href="http://maps.google.com/?ie=UTF8&amp;ll=71.343013,145.335388&amp;spn=0.355409,1.477661&amp;t=h&amp;z=10" target="_blank">Google Maps</a></span></em></p>
<p> </p>
<p>It is no accident that many of the most fascinating aerial views involve hydrology.  Perhaps more than any other common landscape feature, water takes on an engaging combination of beauty and comprehensibility when seen from the air.  Whether it is the <a href="http://maps.google.com/maps?f=q&amp;source=s_q&amp;hl=en&amp;ie=UTF8&amp;ll=54.353955,9.176674&amp;spn=0.162865,0.365639&amp;t=k&amp;z=12" target="_blank">disappearing waterways</a> of Schleswig Holstein, the overwhelmingly superfluous abundance of <a href="http://maps.google.com/?ie=UTF8&amp;ll=58.797382,81.653137&amp;spn=0.342922,1.196823&amp;t=k&amp;z=11" target="_blank">oxbow curlicues</a> on the Ob river, or <a href="http://maps.google.com/?ie=UTF8&amp;ll=37.179535,81.382685&amp;spn=0.038364,0.092182&amp;t=h&amp;z=14" target="_blank">doomed Himalayan meltwater</a> flowing north into the Taklamakan Desert, water always puts on an impressive show for the intrepid googlenaut.  The <a href="http://earthasart.gsfc.nasa.gov/lena.html" target="_blank">Lena delta</a> has been quite literally a poster child for this phenomenon since early Landsat days, but a casual browse along the Siberian or Alaskan coasts reveals a lifetime&#8217;s supply of braided streams, kettle holes and pingos.  Selection suddenly seems superfluous.</p>
<p>And therin lies the problem: if everything is beautiful and fascinating, nothing is.  If there is no benefit to selection, there is no reason to abstract individual views, no reason to indulge in the activity of making photographs rather than simply browsing Google Earth.  Personally, I revolt at the idea of a hierarchy of landscape forms, especially the travel industry&#8217;s aristocracy of Most Awesome Destinations, but there must be some metric that makes the photographic or selective act worthwhile.</p>
<p> </p>
<p><a href="http://struangray.com/twiglog/wp-content/uploads/2009/05/utah_braque.jpg"><img class="aligncenter size-full wp-image-276" title="utah_braque_sm" src="http://struangray.com/twiglog/wp-content/uploads/2009/05/utah_braque_sm.jpg" alt="utah_braque_sm" width="500" height="602" /></a></p>
<p style="text-align: center; "><em>Braque in Utah</em></p>
<p style="text-align: center; ">Click the image, or go to <a href="http://maps.google.com/maps?f=q&amp;source=s_q&amp;hl=en&amp;geocode=&amp;q=&amp;ie=UTF8&amp;ll=40.496472,-112.734146&amp;spn=0.025814,0.063472&amp;t=k&amp;z=15" target="_blank">Google Maps</a></p>
<p> </p>
<p>The answer lies in individuality.  First the individuality of process: some people are simply better at winnowing interesting facts from large datasets, or are more motivated to do so.  Whatever the hype about collaborative cultures on the web, authoritative and popular editors and curators persist, and will continue to do so as long as the general public is averse to research using primary sources.  Second, there is an individuality of taste: it is simple enough to find views that look like the usual <a href="http://maps.google.com/?ie=UTF8&amp;t=h&amp;ll=-5.518942,-67.538452&amp;spn=0.44425,0.560989&amp;z=11" target="_blank">populist</a> <a href="http://maps.google.com/?ie=UTF8&amp;ll=-15.015427,129.035368&amp;spn=0.046756,0.099049&amp;t=h&amp;z=14" target="_blank">nature</a> <a href="http://maps.google.com/?ie=UTF8&amp;ll=21.555923,12.908936&amp;spn=0.613074,1.274414&amp;t=h&amp;z=11" target="_blank">aerials</a>, or even to <a href="http://maps.google.com/maps?f=q&amp;source=s_q&amp;hl=en&amp;geocode=&amp;q=&amp;g=40.749955,-113.402638&amp;ie=UTF8&amp;t=k&amp;ll=40.750557,-113.362631&amp;spn=0.004657,0.007135&amp;z=17" target="_blank">re-visit</a> the sites of established art projects, but if your tastes run to less recognised schools of photography and art, you are unlikely to find the work done for you. </p>
<p>Fortunately, such issues are largely inconsequential, in the same way that looking at pictures of supermodels or high performance sports cars is inconsequential.  It&#8217;s just window shopping, and if Ferrari don&#8217;t make a model in my preferred shade of turquoise, there&#8217;s no harm done.   Armchair geographising only becomes pernicious if you allow it to mould your thought: for example, if you sit around moping that your local brook isn&#8217;t as wonderful as the mighty Yukon, or if you neglect your own beach because it doesn&#8217;t have a thousand mile coral reef just offshore.</p>
<p> </p>
<p><a href="http://struangray.com/twiglog/wp-content/uploads/2009/05/venezuela_scumbles.jpg"><img class="aligncenter size-full wp-image-274" title="venezuela_scumbles_sm" src="http://struangray.com/twiglog/wp-content/uploads/2009/05/venezuela_scumbles_sm.jpg" alt="venezuela_scumbles_sm" width="500" height="340" /></a></p>
<p style="text-align: center; "><em>Scumbles, river and farm</em></p>
<p style="text-align: center; ">Click the image, or go to <a href="http://maps.google.com/?ie=UTF8&amp;ll=6.799711,-67.876453&amp;spn=0.082159,0.149603&amp;t=h&amp;z=14" target="_blank">Google Maps</a></p>
<p> </p>
<p><a href="http://struangray.com/twiglog/wp-content/uploads/2009/05/grampian_drainage.jpg"><img class="aligncenter size-full wp-image-271" title="grampian_drainage_sm" src="http://struangray.com/twiglog/wp-content/uploads/2009/05/grampian_drainage_sm.jpg" alt="grampian_drainage_sm" width="500" height="349" /></a></p>
<p style="text-align: center; "><em>Drainage and peat burns</em></p>
<p style="text-align: center; ">Click the image, or go to <a href="http://maps.google.com/?ie=UTF8&amp;t=k&amp;ll=57.439545,-3.51644&amp;spn=0.022265,0.073214&amp;z=15" target="_blank">Google Maps</a></p>
<p> </p>
<p>However, there is at least one consequential problem of aerial photography, and that is complacency.  It is too easy to believe that you have understood a landscape seen from above when all you have really done is fit it into a tidy set of predetermined categories.  When you walk over a landscape it has the chance to confront you with a reality different from your expectations, but pictures from space have only limited power to oppose interpretation in terms of what you already know, or, worse, confirmation of what you set out to find.</p>
<p>Trees illustrate the problem perfectly.  Looking at them only from above makes it very hard to see their general form, especially if they are in leaf.  Mountains have a similar problem, but height mapping and a three-dimensional perspective can resolve some of the ambiguity of a bird&#8217;s-eye view.  With a tree a straight-down single viewpoint simply does not record enough information.  The hedged fields of the Breton <em>bocage</em> are a perfect example.  From above, in early summer, the trees look much like any others: a googlenaut has no clue that they are in fact the weird and wonderful <em>ragosses</em>, a pollard form driven to extremes by local custom and tax laws.</p>
<p> </p>
<p><img class="aligncenter size-full wp-image-267" title="ragosses_2006" src="http://struangray.com/twiglog/wp-content/uploads/2009/05/ragosses_2006.jpg" alt="ragosses_2006" width="500" height="368" /></p>
<p style="text-align: center; ">Bocage near Rennes in Brittany, France &#8211; <a href="http://maps.google.com/?ie=UTF8&amp;ll=48.49321,-1.649301&amp;spn=0.002759,0.006539&amp;t=k&amp;z=18" target="_blank">Google Maps</a></p>
<p> </p>
<p><img class="aligncenter size-full wp-image-264" title="alain_amet_ragosses" src="http://struangray.com/twiglog/wp-content/uploads/2009/05/alain_amet_ragosses.jpg" alt="alain_amet_ragosses" width="500" height="363" /></p>
<p style="text-align: center; ">Les Ragosses seen from the side</p>
<p style="text-align: center; ">Picture by Alain Amet from <a href="http://www.maisonbotanique.com/dyn/1acte_2_bardel.pdf" target="_blank">Philippe Bardel&#8217;s paper</a> at the <a href="http://www.maisonbotanique.com/colloque-europeen.php" target="_blank">First European Colloquium on Pollards</a></p>
<p> </p>
<p>To be fair, until recently Google Maps had a more <a href="http://struangray.com/twiglog/wp-content/uploads/2009/05/ragosses_apr19_2003.jpg" target="_blank">traditional analyst&#8217;s view</a>, taken in spring before the leaves emerge, and with low, slanting sunlight so that shadows reveal much about the terrain and the trees which is hidden in the summer view.  Google Earth does have the older data, but you have to explicitly go looking for it.   The tendency of Google&#8217;s primary data set to tend towards a summer holiday view of the landscape is an amusing analogue of the commercial landscape photograph, but highly frustrating for those who cannot afford their own plane or satellite.</p>
<p>Cartographers talk about establishing &#8216;ground truth&#8217;: visiting sites to correlate the deductions of remote sensing with fieldwork.  The phrase should not be confused with the now slightly shop-worn military expression &#8216;the truth on the ground&#8217;, which has become a tool to browbeat civilians asking impertinent questions.  The mapper&#8217;s term is an intellectually respectable reminder that landscapes hold truths on many length scales, that restricting yourself to a single viewpoint is necessarily limiting, and that it pays to be humbly empirical when faced with the World&#8217;s extraordinary diversity of landforms.</p>
<p> </p>
<p><a href="http://struangray.com/twiglog/wp-content/uploads/2009/05/henan_hubai_villages.jpg"><img class="aligncenter size-full wp-image-272" title="henan_hubai_villages_sm" src="http://struangray.com/twiglog/wp-content/uploads/2009/05/henan_hubai_villages_sm.jpg" alt="henan_hubai_villages_sm" width="500" height="336" /></a></p>
<p style="text-align: center; "><em>Tobey in Henan and Hubai</em></p>
<p style="text-align: center; ">Click the image, or go to <a href="http://maps.google.com/?ie=UTF8&amp;ll=33.56457,115.521927&amp;spn=0.274635,0.637207&amp;t=k&amp;z=12" target="_blank">Google Maps</a></p>
<p> </p>
<p>I am sure the professional image analysts are more expert than this autodidact Google gawper, but unless the NSA start offering classes in image interpretation for Everyman the fastest way to learn is to spend time comparing available imagery with how it feels to walk across the same landscape.  The superficially similar stripes of <a href="http://maps.google.com/?ie=UTF8&amp;t=k&amp;ll=57.496278,-3.580964&amp;spn=0.004197,0.009227&amp;z=17" target="_blank">drainage ditches</a>, <a href="http://maps.google.com/maps?f=q&amp;source=s_q&amp;hl=en&amp;ie=UTF8&amp;ll=51.976574,-1.902544&amp;t=k&amp;z=17" target="_blank">medieval plough marks</a>, <a href="http://maps.google.com/maps?f=q&amp;source=s_q&amp;hl=en&amp;ie=UTF8&amp;ll=51.089615,-1.21768&amp;t=h&amp;z=17" target="_blank">water meadows</a>, and <a href="http://maps.google.com/maps?f=q&amp;source=s_q&amp;hl=en&amp;ie=UTF8&amp;t=k&amp;ll=58.063228,-5.301434&amp;z=18" target="_blank">post-clearances runrig</a> tell very different stories to the botanist, the historian and the social scientist &#8211; and to the informed photographer.  A photographic response to such places is welcome of course to take a naive view, but my own preference is for photographers who pay attention to the messages written into the landscape.</p>
<p>Stillman Wagstaff, in a handy guide to <a href="http://www.williamcronon.net/researching/landscapes.htm" target="_blank">reading the landscape </a>written by William Cronon&#8217;s students, reinforces this point, that you should &#8216;toggle the scale at which you frame your attention&#8217;.  It&#8217;s a lovely phrase for an important process, one which I try to keep in mind while working as a photographer immersed in the here and now.  Toggling between timescales can be equally rewarding, and is as important, but that is perhaps a subject for another post.</p>
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		<item>
		<title>Underwood</title>
		<link>http://struangray.com/twiglog/2009/04/30/underwood/</link>
		<comments>http://struangray.com/twiglog/2009/04/30/underwood/#comments</comments>
		<pubDate>Thu, 30 Apr 2009 21:07:57 +0000</pubDate>
		<dc:creator>struan</dc:creator>
				<category><![CDATA[Landscape Forensics]]></category>
		<category><![CDATA[Phenology]]></category>

		<guid isPermaLink="false">http://struangray.com/twiglog/?p=214</guid>
		<description><![CDATA[
Warm weather around Easter put an abrupt stop to the woodcutting season here, and I have been noting this year&#8217;s effects on the town and the surrounding countryside.  Two much-loved smaller trees are gone, but there are also comforting signs that the neglect of some of my favourite places is of a benign sort, and [...]]]></description>
			<content:encoded><![CDATA[<p><img class="alignright size-full wp-image-224" title="hokusai-mountain-woodcutter_sm" src="http://struangray.com/twiglog/wp-content/uploads/2009/04/hokusai-mountain-woodcutter_sm.jpg" alt="hokusai-mountain-woodcutter_sm" width="270" height="642" /></p>
<p>Warm weather around Easter put an abrupt stop to the woodcutting season here, and I have been noting this year&#8217;s effects on the town and the surrounding countryside.  Two much-loved smaller trees are gone, but there are also comforting signs that the neglect of some of my favourite places is of a benign sort, and not the mark of abandonment or &#8211; worse &#8211; imminent redevelopment.  It has been fascinating to see decisions being made which will have aesthetic consequences well past my children&#8217;s lifetimes.  </p>
<p>Lund is finally getting round to taking down some of the standing dead trees within the town boundaries, prompted by a large poplar which nearly crushed a baby and toddler as it fell over.  After much wailing and anguish in the local paper money has been found for some long-needed preventative medicine, albeit at the cost of adding rotten willows and poplars to the already extensive inventory of diseased elms needing attention. </p>
<p>The gardeners in the large nineteenth century graveyard which abuts our house on two sides came and took out their last few remaining elms, but gratuitously saw fit to also chop down a harmless but lovely thirty-four year old hornbeam.  We are hoping they will lack the resources or the determination to come and grind out the stump, giving the tree a chance to send up shoots and live on.  There is hope: a similar-sized maple cut down outside my office last year managed to put on five feet of new growth in as many months before the groundsmen got round to grubbing it out for good.</p>
<p>Nobody really knows why trees in the temperate zones evolved the ability to recover from trauma by starting new growth from dormant buds hidden under the bark, but the same mechanism that is thought to have saved early trees from the depredations of megafauna, disease, and windthrow now serves to frustrate the tidy gardener, just as it frustrated clearance-minded settlers from the Stone Age to colonial times.  Before American landscape painters discovered the barren West, their tame foregrounds were almost always populated by a field of stumps.  The difficulty of eradicating ironbark eucalypts in Australia meant their remains were employed as markers in the landscape long after agrarian use had been established.  The phrase &#8216;back of the Black Stump&#8217; is still used to indicate land beyond the outer rim of civilisation.</p>
<p>Sometimes a tree&#8217;s resilience is used to advantage: without it, garden favourites like knotted limes, formal topiary, and espaliered fruit trees would not exist.  Mostly though, woodcutting is seen as a necessary evil, a winter chore to keep gardens and parks looking as planned, or a way of dealing with trees which have become inconveniently large, unstable, or old.</p>
<p>This attitude is a consequence of a deeper-held misconception: that deciduous hardwoods cannot be a continuously productive asset.  In the contemporary urban imagination to &#8216;use&#8217;, say, an oak, means to let it grow to the desired size, and then to cut it down entirely, planting a new tree &#8211; or a housing estate &#8211; where it stood, and leaving no trace of the original tree.  Woodcutting indicates an emotional, end-of-times event, associated with the destruction of something known since childhood; an irreversible step along a path that leads away from the diversity and complexity of free nature to the monotony of ordered domestication.</p>
<p>Quite apart from the fact that no tree in Western Europe has been free of human influence for at least two thousand years &#8211; there is no &#8216;free&#8217; nature here &#8211; this way of looking at trees ignores the existence of a once extensive industry based upon regular cycles of cutting and re-growth for the production of small-scale timber, firewood and leaf fodder.  Like working dogs, these working trees look different to their domesticated pet cousins such as pruned garden trees, or trees subjected to a crown reduction late in life, and their physical structure and ecology, and the knock-on effects on the surrounding landscape, are all characteristic.</p>
<p> </p>
<p><img class="aligncenter size-full wp-image-217" title="epstein_epping" src="http://struangray.com/twiglog/wp-content/uploads/2009/04/epstein_epping.jpg" alt="epstein_epping" width="500" height="386" /></p>
<p style="text-align: center; ">Jacob Epstein <em>Glade in Epping Forest c. 1945</em></p>
<p> </p>
<p>There are two main shapes to regularly-cut trees.  The first is the coppice, where the tree is cut down to the ground, and the new shoots form a ring that grows outward with each cutting.  The second is the pollard, where the tree is cut back to a level above the teeth of grazing animals so as to protect the new shoots.  Cutting can be as often as every two or three years to produce sticks for weaving or other craft use, or up to fifteen or twenty years for small-scale timber and long-burning firewood.  There is also &#8217;shredding&#8217;, a catchall word describing any cutting back of side branches that stops short of outright pollarding.</p>
<p>All these forms of cutting keep the tree in a juvenile state.  For pollards, this can prolong its life to two or three times the span of uncut, &#8217;standard&#8217; trees, and a coppiced tree can live essentially forever.  Allowing the limbs to grow too thick makes it harder or impossible for the tree to recover from the cutting, and the top-heavy tree becomes susceptible to rot and wind, so ancient pollards and coppices are indicators of long periods of continuous human care.  The decline of traditional underwood management since the Second World War has meant that many woodlands which have been in dynamic equilibrium since the Middle Ages or earlier are now full of &#8216;overstood&#8217; coppice, or &#8216;candelabra&#8217; pollards with top-heavy, thick-boughed crowns.  Re-starting the cutting cycle risks simply killing the tree, which leaves owners with an interesting dilemma: renovating the aspect of the woodland which is truly ancient risks losing it altogether.</p>
<p> </p>
<p><img class="aligncenter size-full wp-image-218" title="split_beech" src="http://struangray.com/twiglog/wp-content/uploads/2009/04/split_beech.jpg" alt="split_beech" width="500" height="397" /></p>
<p style="text-align: center; ">Stephen Thompson <em>After the Storm</em> </p>
<p style="text-align: center; ">From the <a href="http://www.bl.uk/onlinegallery/onlineex/earlyphotos/a/006zzz0001758b6u00009000.html" target="_blank">British Library</a></p>
<p> </p>
<p>Individual ancient pollards are celebrated for their size, odd shapes and sheer age.  The life-prolonging effects of pollarding means that the oldest trees with the largest girths are often pollards, or ex pollards grown out.  A celebrity worship has built up around individual trees &#8211; the Thomas Pakenham &#8220;<a href="http://www.amazon.co.uk/s/ref=nb_ss_b?url=search-alias%3Dstripbooks&amp;field-keywords=remarkable+trees+thomas+pakenham&amp;x=0&amp;y=0" target="_blank">Remarkable Trees</a>&#8221; franchise is one notable aspect &#8211; but that harvesting from entire stands of pollards was once relatively common is poorly appreciated, even in places like Epping Forest which penetrates deep into metropolitan London, and where large stands of pollard hornbeams and beeches are still to be found.</p>
<p>Coppices have if anything fared even worse.  &#8217;Copse&#8217; has come to mean any small wood, and attempts to re-start the coppice cycle in ancient woods are seen as pure vandalism.  North of Lund, where the underlying moraine turns from lime to acid is a band running across the country once known as &#8216;risbygden&#8217; &#8211; the withy lands.  Here, sandwiched between the rich southern farmland and the true evergreen woods further north, was a region that provided the wood-poor farmers further south with the underwood products &#8211; particularly fencing and dead hedging &#8211; they did not grow for themselves.  Vast areas of sixteenth and seventeenth century maps are covered with &#8217;surskog&#8217;, word for a type of wood whose meaning and etymology is unknown, which is almost certainly coppice, although nobody knows for sure.  Even more remarkably, it is not even known which species of tree were grown in these woods.</p>
<p> </p>
<p><img class="aligncenter size-full wp-image-219" title="felled_hornbeam" src="http://struangray.com/twiglog/wp-content/uploads/2009/04/felled_hornbeam.jpg" alt="felled_hornbeam" width="500" height="500" /></p>
<p style="text-align: center; ">Felled Hornbeam</p>
<p> </p>
<p>The odd man out is willow.  Historically, pollard willows and coppiced osier for basketry were exceptional in laws and customs compared to other trees, and that exception continues today.  In my county, Skåne, pollard willows are everywhere: with rows of old, flayed handlike ones marking the fields, roads and watercourses as they were one to two hundred years ago, and livid-stemmed new ones around houses, paddocks and estates of new builds.  Osier is still grown on a small scale for basket making, but it is also farmed like an arable crop in dense stands of &#8217;short rotation coppice&#8217; to produce biofuel.  However, new pollards of other species are very hard or impossible to find, and non-willow coppices are almost entirely accidentals.</p>
<p>There is a class aspect to the neglect of pollards and coppices.  The spreading oak tree is a rich man&#8217;s tree.  It symbolises stability, reliability and longevity, but also wealth.  You have to be rich to allow the tree room to grow, and to forego the income from regular cutting.  Cut trees represent the poor commoner, so except for Versailles-derived models, they do not figure in the aspirational gardens of the growing urban classes.  They are mostly ignored in literature and art too, a prejudice which has been inherited wholesale by photography.</p>
<p>There is also a utilitarian logic to this forgetfulness: although traditional practices do live on in the form of craft-fayre handicrafts like wickerwork baskets or cleftwood fencing, plastics and cheap steel have taken over the roles of most traditional woodland products, and burning wood as fuel is now for the most part either a secondary way to heat a home or purely decorative.  Cutting leaf fodder for grazing animals is regarded as a hopelessly backward practice, suitable only for feeding third world goats in lands with no grass.  In Northern Europe, we simply no longer have any practical need that can be serviced by economically viable cyclical harvesting.</p>
<p>However, nobody seems to have told the trees: not only do the older ones retain the mark of our vanished attitudes in the patterns of their branches and the spacings of their annual rings, but trees of all ages carry on reviving and sprouting wherever they are given the chance.  Low-maintenance verges on roads and railways are the new coppices in the landscape, as they favour quick-growing trees which can survive hacking down by mechanical flail every few years or so.  Deliberately created modern pollards are rare, and tend to be in gardens or parks, but the need to maintain free passage for delivery lorries and fire engines past the spandrels of the suburban road system can also lead to regular pruning back to the stem.</p>
<p>My personal interest in these trees is twofold.  First, the older trees are telltales of a change in land use.  Grown-out windbreak pollards around a farmhouse tell a story of changing fashions as well as the shift from on-site to off-site energy production.  Groups of similar trees amid housing developments show graphically how the town has swallowed up the surrounding farmland, and the thickness of their candelabra boughs dates the estate as surely as architectural styles or papers in the local records office.  Coppices are largely eradicated, but the few old stools I have found are unmistakable signs of human activity in the nominal wild.</p>
<p> </p>
<p><img class="aligncenter size-full wp-image-216" title="bb_brendanchase" src="http://struangray.com/twiglog/wp-content/uploads/2009/04/bb_brendanchase.jpg" alt="bb_brendanchase" width="500" height="666" /></p>
<p style="text-align: center; ">Woodcut by &#8216;<a href="http://en.wikipedia.org/wiki/Denys_Watkins-Pitchford" target="_blank">BB</a>&#8216; from <a href="http://en.wikipedia.org/wiki/Brendon_Chase" target="_blank">Brendon Chase</a></p>
<p> </p>
<p>Secondly, current attitudes betray a wealth of unspoken assumptions about the landscape, the purpose and value we put upon it, and how we see ourselves within it.  These include the aspirational habit of only growing &#8211; or photographing &#8211; prestigious standard trees; the selective nature of a so-called tradition which only remembers one species, willow; and the modern cult of self-centred nature worship, with it&#8217;s highly codified rules about beauty and how it should be portrayed.</p>
<p>Trees are the part of the landscape which most closely matches the timescales of human memory and myth making.  They show their history in their structure and distribution, and they preserve in visible form the consequences of decisions made by many previous generations.  Their survival, unchanged yet ever changing, can be regarded as a minor miracle, or an accidental by-product of the art of the possible compounded over centuries.  Either way, they are signs that deserve to be read and understood, at the intuitive level, and the intellectual.</p>
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		<title>Marl</title>
		<link>http://struangray.com/twiglog/2008/11/24/marl/</link>
		<comments>http://struangray.com/twiglog/2008/11/24/marl/#comments</comments>
		<pubDate>Mon, 24 Nov 2008 13:19:02 +0000</pubDate>
		<dc:creator>struan</dc:creator>
				<category><![CDATA[Landscape Forensics]]></category>

		<guid isPermaLink="false">http://struangray.com/twiglog/?p=47</guid>
		<description><![CDATA[
Flying into Copenhagen or my local airport, Sturup, is a fascinating exercise in landscape history.  Away from urban areas the ground you look down on is divided into roughly evenly spaced farms, which form a semi-regular patchwork spread right across this southernmost tip of Sweden and on over the Danish islands.
It is tempting to read [...]]]></description>
			<content:encoded><![CDATA[<p style="text-align: center; "><a href="http://struangray.com/twiglog/wp-content/uploads/2008/11/marlpit.jpg"><img class="aligncenter size-full wp-image-45" title="marlpit" src="http://struangray.com/twiglog/wp-content/uploads/2008/11/marlpit.jpg" alt="" width="512" height="512" /></a></p>
<p>Flying into Copenhagen or my local airport, Sturup, is a fascinating exercise in landscape history.  Away from urban areas the ground you look down on is divided into roughly evenly spaced farms, which form a semi-regular patchwork spread right across this southernmost tip of Sweden and on over the Danish islands.</p>
<p>It is tempting to read into these patterns a heart-warming lesson of cooperation and collaboration in early agriculture, but they are almost entirely the result of C18th and C19th land reforms, often imposed from above by an ruling class bent on higher profits.  They are the equivalent of &#8211; and were in fact inspired by &#8211; the Enclosure Acts in Britain and similar wholesale reforms on the European continent.  Instead of piecemeal working of thin strips scattered across a variety of communal fields, individual farmers and families were allocated a contiguous parcel of land equivalent in area and quality to their previous holdings.  Histories of the reforms tend to emphasise the rational, more productive agriculture that resulted, but the human cost and the social upheavals were vast.  I do not know of a Swedish poet to match John Clare in England in lamenting what was lost in the changes, but before and after maps make clear the immensity of the disruption and effort.  It is remarkable in today&#8217;s world of drawn-out planning permissions and zoned development to contemplate the audacity and determination of the reformers.</p>
<p>In Sweden the reforms included breaking up the old village centres and rebuilding many of the farmhouses out in the middle of their newly allocated land.  Ghost village squares can be found where all the farms simply evaporated, and it is quite common to find older parish churches in baffling isolation with no obvious community to attend them.  Another aspect of the Swedish enclosures was that there was no obligation to actually enclose the newly divided land.  To this English observer, the lack of hedges and mature boundary trees is one the most striking aspects of the Swedish agrarian landscape.  The difference is obvious even from the air.  Over Skåne the eye picks out block-like patterns of field shapes, whereas in a similar area of, say, the Welsh marches, it is the linear boundaries of the fields which dominate.  One thing however is common to both landscapes: the way that the most open fields often have a tree-ringed blob at their centre.</p>
<p> </p>
<p><a href="http://struangray.com/twiglog/wp-content/uploads/2008/11/slattaker.jpg"><img class="aligncenter size-medium wp-image-43" title="slattaker" src="http://struangray.com/twiglog/wp-content/uploads/2008/11/slattaker-300x178.jpg" alt="" width="300" height="178" /></a></p>
<p style="text-align: center; "><a href="http://www.hitta.se/LargeMap.aspx??ShowTraffic=false&amp;Filter=378&amp;ShowSatellite=true&amp;pointX=1333647&amp;pointY=6194212&amp;name=&amp;cx=1333647&amp;cy=6194212&amp;z=2" target="_blank">Slättåker</a>, north of Lund</p>
<p><a href="http://struangray.com/twiglog/wp-content/uploads/2008/11/maelor_saesneg.jpg"><img class="aligncenter size-medium wp-image-42" title="maelor_saesneg" src="http://struangray.com/twiglog/wp-content/uploads/2008/11/maelor_saesneg-300x178.jpg" alt="" width="300" height="178" /></a></p>
<p style="text-align: center; "><a href="http://maps.google.com/?ie=UTF8&amp;ll=52.968169,-2.870371&amp;spn=0.010765,0.027552&amp;t=k&amp;z=16" target="_blank">Maelor Saesneg</a>, in the Welsh Marches</p>
<p>Further north in Sweden, such blobs are almost always an &#8220;åkerholm&#8221; or &#8220;field skerry&#8221;; a pile of stones laboriously cleared from the cultivated earth by hand and built up over the centuries as a monument to drudge and hard graft.  It is no accident that these features are largest and most common in the areas of Sweden that saw the greatest emigration to the USA.  Around Lund however, the farmland is the best in the country, and a closer look at the aerial views shows that most of the blobs are not heaps, but holes, usually filled with water.</p>
<p>Popularly, the holes are known as &#8220;duck ponds&#8221;, but their ubiquity suggests that either this is a misnomer, or earlier generations of Swedes had an unusually close and all-encompassing relationship with their web-footed friends.  Ducks and other aquatic fauna and flora do indeed love these handily placed mini-lakes, and today&#8217;s farmers are bribed to retain the holes as refuges for species whose normal habitat of marshes and meanders has been obliterated by drainage and canalisation.</p>
<p> </p>
<p><a href="http://struangray.com/twiglog/wp-content/uploads/2008/11/single_pit.jpg"><img class="aligncenter size-medium wp-image-44" title="Single Marl Pit" src="http://struangray.com/twiglog/wp-content/uploads/2008/11/single_pit-300x210.jpg" alt="" width="300" height="210" /></a></p>
<p style="text-align: center; "><a href="http://www.hitta.se/LargeMap.aspx??ShowTraffic=false&amp;Filter=378&amp;ShowSatellite=true&amp;pointX=1339577&amp;pointY=6183921&amp;name=&amp;cx=1339577&amp;cy=6183921&amp;z=1" target="_blank">An archetypical pit</a></p>
<p>The classic form has a squared-off end opposite a rounded one, and if the field is on an incline the rounded end is almost always on the upslope side.  If you are tempted to swim with the ducks you will find that the squared off end usually has a gradual slope into the water, while the rounded end is steep-sided.  Were it not for the green soup of algae and duckweed that thickens the water in any weather warm enough for skinny dipping, you might imagine the holes had be designed for swimming in.</p>
<p>Here, as is often the case in the utilitarian world of farming, form is a good guide to function.  The holes were not dug to provide a charming recreational water feature; in fact, they are usually sited so as to minimise water infill, which is why they turn so soupy in the summer.  Instead, they are the remnants of an early and extensive form of soil improvement called &#8220;marling&#8221;, in which chalky clays were dug out of the subsoil and mixed with the surface layer to improve its consistency and chemical balance.  The slope into the marl pit was there to allow a horse and cart to approach the steep workface.</p>
<p>In areas of easy waterborne transportation marl was mined on a large scale and distributed to farms some distance away, but the amount required is exceedingly bulky and heavy, and in most areas cartage fees could easily triple the basic price even for journeys as short as a few miles.  Where the subsoil was of the right type, it made sense simply to dig a hole in the middle of the field and thus to move the marl over the shortest possible distance. </p>
<p> </p>
<p><a href="http://struangray.com/twiglog/wp-content/uploads/2008/11/margeltag.jpg"><img class="aligncenter size-full wp-image-46" title="margeltag" src="http://struangray.com/twiglog/wp-content/uploads/2008/11/margeltag.jpg" alt="" width="386" height="394" /></a></p>
<p style="text-align: center; ">From <em><a href="http://runeberg.org/nfbs/0168.html" target="_blank">Nordisk familjbok</a></em> &#8211; a Swedish book on husbandry, 1913</p>
<p>The amount of marl dug out of a pit varied widely, which is not surprising considering variations in the clay&#8217;s composition and on the type and quality of soil on which it would be spread.  Figures range from a few tens of cartloads per acre up to several hundred, and either amount represents an almost unbelievable level of backbreaking toil.  It is no surprise that marling was an unpopular activity among those who actually had to do the work, not least because it usually took place in the summer between haymaking and harvest-time, just when custom demanded a period of rest leavened by dancing around the maypole and a relaxed attitude to public drunkeness.</p>
<p>Marling was practiced by the Romans, and has left sporadic traces in the European archaeological record for at least two thousand years.  Its great heyday was in the C18th and C19th when land reform, population growth and the early glimmerings of the science of soil chemistry combined to give purpose and intellectual respectability to an old country practice.  At best, marling could double the productivity of light acid soils, and because it was slow acting it needed only to be applied every ten to fifteen years.  A C16th saying put it: </p>
<p style="padding-left: 30px; "><em>&#8220;a man doth sande for himself, lyme for his sonne, and marle for his graunde child&#8221;</em></p>
<p>However, marling was unpredictable: the principle effect of marl is to counter acidity and raise the soil pH, and until reliable chemical assays were available, marls could only be judged by crude measures such as their colour or consistency.  In the worst cases, marl could impoverish a soil by promoting the rapid breakdown and leaching of all its organic material, which led to the contradictory C16th saw:</p>
<p style="padding-left: 30px; "><em>&#8220;..ground enriched with chalke makes a fiche father and a beggarly sonne&#8221;</em></p>
<p>In Swedish there is a saying that is an almost literal translation:</p>
<p style="padding-left: 30px; "><em>&#8220;kalk skapar rika föräldrar men fattiga barn&#8221;</em></p>
<p>Once transport links improved, marling gave way to more frequent applications of lime from kiln-fired limestone or shell deposits, and later authors tend to be unusually dismissive about what had once been a widespread and productive agricultural practice.  Condescension to the supposed idiocy of the past is nothing new, but the tone in which marling is described as primitive and crude is more than usually supercilious.</p>
<p>Today, we have the scientific tools to understand marl as a fertiliser, but we rarely apply them because mechanisation and oil-based fertilisers have made the questions irrelevant.  Some marls especially rich in phosphate or potassium are still mined, but small-scale local use has completely disappeared.  The history of agricultural chemistry has generated many curios, and marling has joined others like the guano and coprolite fevers in leaving clues written in the landscape, but little in the memory.  The ducks at least seem grateful.</p>
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