Showing posts with label structure. Show all posts
Showing posts with label structure. Show all posts

Tuesday, 18 April 2017

Asturias trip report - 3

The previous evening after dinner, Sergio had enquired if we would like to accompany him on a Rebeco survey, essentially a drive to a high mountain pass and then a short ascent to view Rebeco. Sergio's work as a mountain biologist authorised him to drive along the restricted mountain tracks to conduct survey work. Realising there would be no slog uphill in the night, Nic immediately said yes and how could I turn down an opportunity to be taxied to a high point for the quality light of dawn.  Generally the topography required a minimum ascent of 600 - 1,000m from the parked car and a few hours of night navigation to reach a high point for dawn. In any case the weather forecast had taken a turn for the worse, with weather charts indicating high pressure and the depressing symbol of sun and clear blue sky for the next 4 days, so dawn twilight would be a welcome opportunity.


Following an interesting drive up a rugged mountain track the destination was an area of pasturage on a col covered by a hard ground frost, with a dramatic vista of surrounding peaks and valleys. Normally a frost should equate to clear air and excellent visibility, instead there was a distinct haze, deep sigh and another reason to loathe high pressure weather systems.  I complimented Sergio on the location and views, then explained that I'd take the opportunity to look around and with indecent haste departed, leaving Nic to keep Sergio company in finding Rebeco.


The views encompassed some areas of compelling structural geology, sadly the azimuth of sunrise and haze mitigated against that image. In my view what defines twilight landscape photography from the hills with clear skies is alpenglow and the haze would accentuate that, with pastel colours of purple, pink, red contrasting with cool blues transitioning to a golden colour developing towards sunrise, then the warm golden light and then harsh lighting.  The image narrative I wanted was to convey the dawn colour, geology and mosaic of habitats.



The col was a mosaic of grass, holly bushes, gorse, bracken, brambles, broom and daffodils growing between 1,200 - 1,300m asl. The vegetation assemblages hinted at reduced levels of grazing/trampling and with a continued reduction in grazing would given time witness a succession of scrub communities then secondary woodland.

The numbers of holly bushes must be close to satisfying the requirements of woodland categorisation and showed no visible browse lines, the larger holly bushes appeared to be old coppice stools some with younger sucker shoots and possibly an historic resource of animal fodder during winter. 

The high elevation of closed canopy woodland prompted thoughts of autumn photographic potential.

I did take an image of the geology outcrops tracing the outlines of folding that hint at the structural complexity of this area of the Cordillera Cantábrica. Having since read some geology research papers it is indeed the case with thrusts, folds and faulting associated with thin skinned deformation in the Variscan Orogeny and later reactivation in the Alpine Orogeny.

Geology structure on a landscape scale
Sergio, had located Rebeco and a look through his spotting scope at a grazing Rebeco was a revelation, as I couldn't see anything looking through binoculars at the same distant hill side. The ride back down emphasised the ruggedness and exposure of the mountain track. After breakfast, we went to the nearest village store and bought a couple of bottles of wine as a thank you to Sergio. A siesta was taken and suitably refreshed an excursion made to specifically scouting out a valley for its autumn potential.

Angel's Tears




It was an enjoyable and useful walk, identifying some areas of autumnal potential. 

Wednesday, 6 May 2015

Bluebell woodland landscapes - aesthetics and a philosophy.

Bluebells under a woodland canopy of trees in newly emergent leaves, is one of nature's more appealing floral displays and a challenging one for making an image that does justice to the scene. It is said that there are three types of aesthetic interest in a photograph: composition, the knowledge imparted on the subject and the photograph itself. I'm also tempted to add that the aesthetics of lens bokeh and rendition is the only aesthetic interest for some photographers.
 Mature oak underplanted with oak and beech.

Bluebells are slow colonisers and to establish a bluebell carpet requires time, undisturbed soil and a long period of woodland cover to form the requisite habitat for bluebells to spread and flourish.  This slow colonising rate make bluebells an indicator species for ancient woodland, which is defined as a wood with continuous tree cover since 1600 AD.
It's always interesting and informative viewing other photographers' images of bluebell woodland, noting the preference of woodland type, weather, lighting and seeing how the structure of woodland is incorporated in the composition of a landscape view.
Small leaved lime wood, with coppice shoots and suckers








At one extreme of woodland structure is what I'll term a highly structured or 'architectural' bluebell woodland which manifests itself as plantations of forest broadleaved dominants, grown and managed for prime grade timber. With uniformity of age and close spacing of planting encouraging straight growth, creating distinct verticals. Beech tree plantations form a closed canopy and cast a deep shade that starves the woodland below of light and sterilises the underwood and field layer of any flora that isn't shade tolerant, which in a maturing beech plantation is most flora, even beech saplings and epicormic growth are shaded out. The elimination of competition in the field layer, creates the habitat for bluebells to flourish, which they do with spectacular effect on the right soils.

20thC maturing beech plantation
Maturing beech plantations are a very clean woodland with smooth bark and for a wood on ground with low topographic relief, defined horizontal layering and lends itself to strong graphic compositions, even with the absence of sunlight, there's an inherent depth to a view.
Ecological interest is confined to a narrow range of shade tolerant specialists and what the dormant soil seed bank throws up when the wood is harvested or when the canopy opens up.

 Predominantly mature beech, with ash, underwood and natural regeneration in the field layer.
At the other extreme are unstructured woodlands with a mixture of natural tree species, from veteran trees, snags, derelict coppice to saplings and seedlings, a range of canopy light regimes, a diverse underwood including coppice shoots, varied field and ground layer with wind throw. In this type of woodland, there will be areas of the wood barren of bluebells through to dense bluebell carpets.  There's usually some topographic relief to contend with too, especially on the western side of the UK.
Photographers hoping for ordered verticals and horizontals in their compositions will be frustrated by he level of complexity and compositions will prove unrewarding when viewed retrospectively. There's no real compositional template and it's down to the experience gained from past failure to make a rewarding photograph.
Ecologists tend to use this type of woodland as an exemplar of biodiversity and these woods are owned/managed by Wildlife Trusts, Woodland Trust, RSPB etc
Mixed woodland and boulders 






Since this is a blog post on bluebell woodland photography aesthetics and not a discourse on bluebell woodland types, I'll only add there are a myriad types of bluebell woodland between the extremes of structured/architectural and unstructured/ecological. Generalising and if you prefer photographing  structured/architectural bluebell woods you'll end up visiting Forestry Commission plantation woodland and if you prefer the less structured/ecological woodlands you'll probably be in a nature reserve and whilst a delight to wander around in, it can be challenging to photograph.

A problematic area is wind and its effects with longer exposure times in woodlands on blurred foliage and flowers, raising ISO values and larger apertures to eliminate motion blur of foliage is not as effective as one would think or even desire.  My memory of a visit to a bluebell wood even in a gale, is a snapshot of still flora and not one of motion blurred leaves and flowers, although I'm conscious of the reality of wind and disturbed foliage, the effect of blurred foliage in an image I find aesthetically objectionable. Which doesn't mean abandoning a trip to bluebell woodland if wind is forecast, it means an adjustment to camera/lens settings, seeking out sheltered woods or a sheltered aspect of a wood and patiently waiting for an opportunity between wind gusts. It is worth heading out even in less than desirable weather as peak condition for a bluebell woodland lasts for a matter of days. I have enough experience of bluebell woodland photography to realise how dynamic an environment woodlands are, far more so than many other landscapes and the scene may not be there next year or even for the next decade.
A bluebell wood impacted by mechanised harvesting operations for some years to come


Whilst researching the online archive of articles and discussions on photographing bluebell woodland, I've stumbled upon some interesting commentary on photographing bluebell woods, some of it surprisingly honest in describing the challenges, some of it all so predictable. The issues of polarising filters and colour rendition were expected and easily remedied in the field by removing the filter. Getting bluebell colour right doesn't need advanced photoshop skills, only some thought, careful observation in the field and experience.
19thC oak plantation with emerging bracken
The surprising commentary was from the 'online cognoscenti' bemoaning bluebell woodland photographs 'it's all been done before' 'cliche subject' 'no originality' 'same old, same old' ...   Really?  Now, I've never been tempted to ask anyone to qualify their opinion, but would concede that rocking up at the tripod holed ground of Micheldever wood to photograph the beech and bluebells might qualify as a photographic cliche and the use of intentional camera movements certainly qualifies as a tiresome photographic cliche.  However, the highbrow nature of some commentary suggests the large and medium format film landscape aficionados are weighing in. I'm not being snarky, but I've seen enough images by LF/MF film users to know that normally they have no problem photographing cliches, so why the venting of spleens on bluebell woods? I suspect it may be due to film's colour rendition of a bluebell wood and high ISO incapability, oh and I've yet to see a convincing black and white photograph of a bluebell wood. I'm not trying to be too precious about photographing bluebell woodland landscapes, but given the demands on time in visiting and locating bluebell woods, the effort expended, long learning curve and the lottery of weather, it is perhaps no coincidence that it's easier to make condescending remarks than to show any appreciation or aptitude for it.