Showing posts with label stream clearance. Show all posts
Showing posts with label stream clearance. Show all posts

Tuesday, 10 July 2018

One small site, many habitats


An extra-long edition of the blog, to make up for the fact that next week’s is likely to be late in being published, and brief, the date being our AGM. 

Photographs: ‘C’ and session-leader.  Text by ‘C’: 

Where would you most like to be on a beautiful English summer’s day?  As today has most certainly been.

Green-Gymmers generally tend to head for where wild things are.   On a hot day, some creatures like to have their feet in cool water.  Likewise a couple of our volunteers, at least in the second half of the morning:


We had all begun the session firmly on dry land, and indeed attending to matters at the level of our own feet.  Some fell into category ‘human-engineered’, others were strictly nature’s own.

For sure, eyes did turn to the sky at various points in the morning.  We were more than usually aware of working close to “the airfield near the village whose clock has two elevens”, as William Joyce, aka ‘Lord Haw Haw’, infamously identified it in one of his WW2 broadcasts made from Nazi Germany:


One of us had his eye very much on the time this morning, as he had a fairly good idea of what air movements to expect, and when.

The first flying thing to attract our attention, however, was during the preliminary briefing, and was an entirely natural phenomenon.  A banded demoiselle (Calopteryx splendens – ‘ours’ female, by the look of it/her) had landed on the sunhat of one of the workers:


Getting down to brass tacks, location and need for the first task were obvious:


To repair, meant first of all taking up the old:


Which in turn meant that within a very short space of time, care was needed when moving about on site:


While the engineers decided what exactly was required to construct the new stretch of boardwalk, ‘lay’ members of the team were engaged in fetching and carrying.  First removing materials which were too decayed to be re-used.  Then bringing specialist items as needed:

It is not very often that one gets to see the ‘inside’, or rather the underside, of one of these walkways:


Meanwhile, other Green-Gymmers were also removing the wire-overlay from a stretch of boardwalk.   They, however, were doing this quite deliberately, for the purpose of replacing it with something which would not have the same capacity to catch on footwear and trip people up if it were allowed to get old and frayed.


You will have noticed the ‘path closed’ sign.  Two similar signs had been put up at the other end of the footpath:



Only three members of the public attempted to walk along the path regardless, having walked all the way along from the Benson-village end.  They had to turn back.

The new anti-slip material was tape.  Cutting this into even lengths to fit neatly in the footfall zone of each plank took three pairs of hands:


To fit the tape in place, meant first of all finding the end …

“At least it’s not as bad as double-sided carpet tape!”
then hammering down any protruding metalwork on the board …

Session-leader assists while tape-fitter is still trying to free sticky tape from its backing strip
brushing away any dust …

finally laying the tape:

When a whole stretch had been done, one could step back and admire, before moving on to the next section:

Time will tell whether the new anti-slip guards do prove effective, and how long they will last.  Even before we left, we were predicting that they would need to be stapled in place.  To sand each plank, for maximum adhesion of tape to surface, would have been an impractical proposition.

With two volunteer-teams working with hammers – to say nothing of noises off, from the A4074 – it was rather a noisy Green Gym this morning:



On the more peaceful southern side of the site, other Green-Gymmers were disappearing into shady greenery:


Among the verdant display, on a patch of re-wilded land, were small hazel trees:


These we had planted in a previous session.  The trouble was, we could not remember how many, or precisely where.  This was a pity because treelets were in danger of being overwhelmed by the more vigorous growth of weeds. 

If they live to be a hundred (which they may do, if coppiced), they will be laughing at the weeds which tried to outcompete them in their younger days.  Meanwhile, however, it was up to Green-Gymmers to find infant trees …


then trim the weeds, and leave each sapling standing free:


By tea-break, that team was satisfied that all small hazel-trees had been located and freed from their bondage to weeds.  And volunteers were ready to pile tools on a very convenient ‘tool tree’:



Refreshments were taken at the picnic table in the centre of a flourishing wildflower meadow.  At this stage of the year it is hard to believe that come autumn we will almost certainly be back here, raking dishevelled brown remnants of this luxuriantly vivid growth:





After the break, the weeding party turned attention to the stream, alongside which the path runs.  This is a different habitat again, with its own distinctive riparian and woodland-edge vegetation:





In many places, the stream is looking very pretty:


The water not only looks pure: it is tested regularly, and last time was found to be of drinking quality.  Moreover, when standing within the hollow ‘U’ of the banks, it is almost impossible to hear sounds of traffic – hard to credit that a main road runs so close by!

In other places, again the problem is slightly over-luxuriant plant growth.  Two Green-Gymmers opted to work from in the stream – with the stream running so clear and shallow, it is easy to see where the bottom is firm.  One volunteer was working in an area where there was not too much overhanging the line of the stream.  The other soon found himself tackling a small jungle – loppers are not usually carried by draping them over the back of the neck!



The other area of water calling for Green-Gym attention was a small pond:


Yes, there is open water there.  “Well done for finding it!” was the session-leader’s comment.

Shears proved useful for trimming vegetation on the dry(-ish) banks of the pond.  To remove plants growing in the pond, man-made tools were discarded:


When a heap of pond-plant-life had been pulled out, gradually a dark pool was revealed for passers-by to be wary of:


To remove more of the actual pond plants, a new tool – with hook – was improvised from a found piece of timber:


To the session-leader it may have looked like “just a stick”, but it was the most effective implement.  In the background of the photo above, waits another volunteer to use it when first volunteer is done with it.

Fortunately for blog-readers, I cannot reproduce the foul odours which rose from the pond as the black water was disturbed.  One of our colleagues, who came along to see what the Pond Team was up to, remarked that the murky depths would be:

“Good for bod snorkelling.”

“Yuk!” was the response nearly all round.

Possibly rather unwisely, another Green-Gymmer casually remarked, “Well I’d be up for it!” before qualifying this with: “… as long as I had the right kit, and a tetanus jab, etcetera.”

I say ‘unwisely’, because the session-leader was there, and promptly countered, “Well all this can be arranged – and you’ve committed yourself, in front of many witnesses!”

Fortunately, none of us fell in the pond.  It is always embarrassing to fall in water, especially if it happens because you are not paying attention to where you are going – however much you may try to make it look as if that was what you intended to do.  But slipping into that particular area of wild water would mean hogging the bathroom on return home for rather a long time.

Of course, if it were discovered that this black mud has healing or beautifying properties, then the fortune of those responsible for this little nature spot would be made.

Returning to the main body of Green Gym meant walking along the underpass – a path not popular with all volunteers, but not in the same league as the Caminito del Rey:



When the various workforces from today re-assembled at the normal session-end time, we were – as always at Green Gym – free to leave whenever we liked.  Equally – as always at Green Gym – there were plenty of volunteers ready and willing to stay on to get a task finished, to the point where the area could be re-opened to the public. 

For the boardway-repair team had a little bit more to do:


No-one had any compunction about (for once) using power-tools to get the job done




As for me, I headed home – and on the way caught some glimpses of aircraft returning home, or landing at RAF Benson, to refuel after the day’s 100th-anniversary flypast.  I myself have never seen so many aircraft in the sky at one time – and probably never will again.  The camera does not do justice to the spectacle:








And my Green-Gym colleague was right.  He had correctly predicted when the jets would arrive at the air-station.  I think he must also have been right when he added that the Red Arrows would take off for the last leg of the return-trip to their home base “at 3.30”.  Through my open study-window, the roar of jet engines struck at precisely 15:30.

Tuesday, 1 August 2017

One long morning (but fun)!



By ‘C’:
                                  
It was the return of several ‘old favourites’ by way of tasks today, and the longest over-run of a session that we have had for a long while.

That it was nearly 2 o’clock before the site was in a state where we could leave for another work-party to continue, could not be helped.  For the main task was boardwalk-repair.


 


















Once you’ve ripped up a footpath used by the public, well you really can’t go home until it is restored to a usable condition.  – Can’t all go home, that is: it was, of course, perfectly in order for individual volunteers to leave at the usual time (or earlier) to be able to get on with the rest of their day.  It only needed a core group to stay on to get the job done.

On arrival, it was not difficult to see where boardwalk repair was most certainly needed.  What photographs cannot convey is the ‘bouncy’ feel of timbers beneath one’s feet.  That the boardwalk was not meant to be that springy, one could tell from the places where holding repairs had been effected.


Demolishing the moribund section of boardwalk was the easy bit.  It did look fun – at least from the perspective of one deployed as ‘mule’ to transport old timber out, and bring new materials in. 



The ‘jammy bar’ (not something we use very often) is a nifty bit of kit: a cross between a short crowbar and the claw end of a hammer – lighter than a crowbar, but strong enough not to bend even when put to much heavier use than merely extracting old nails.  Our Tools Officer says that jammy bars come in several different lengths – he has a short one, about 8 inches – and they are “often called a pry bar and very popular with burglars!” 

Removed timbers were to be sorted into “good” (re-usable) and “rotten”.  This was not always an easy call to make.  In some cases, however, there could be no reasonable doubt:

Meanwhile, the other honest workers had other tasks to keep us out of mischief.  There were perhaps not quite so many of us as usual, though it was good to welcome one volunteer back to ‘active duty’ as it were.  Naturally, our absent colleagues have not just disappeared: it is that time of year when many have other calls on their time, and we look forward to seeing them again in September.

For a start, the brook needed a little TLC.  Litter and overgrowing vegetation do not add to the charm of what is still a Chilterns chalk-stream, even if, by the time it has got to here, it is very near its destination, to merge into the big river (the Thames).
Stream before …
Minutes later ...
you can already see where Green-Gymmers have been
The other job before tea-break was removing Himalayan Balsam.  The plants were pulled out whole, and then the heads removed and deposited into a bag for separate disposal:

This was a job we had done at other locations – and indeed, many years before, at this site, at a different spot.  So one of our volunteers was only joking when he brightly answered the site-warden’s question about whether we knew which plants we were removing:

Anything that’s pink?
– Nooo!  Or you’ll be stripping half the nature reserve …

It fell to one of the erstwhile mules to walk the short length of the site, upstream, to check whether ‘HB’ had made any kind of incursion elsewhere, especially in the place from which we had successfully first eradicated it.  One sprig was taken along for identification purposes, to be sure that all the other pink-flowering plants being spared were indeed not invasive HB:
Himalayan Balsam (Impatiens glandulifera)


Thankfully, we can report that the rest of the site is HB-free.  Which is proof positive that HB-pulling can work.

Besides a variety of tasks to keep us occupied, there were also many exotic-looking plants to add interest to the morning.  Everything at this place seems to be on a grand scale!




Tea-break took us into another habitat zone, a wildflower meadow.  This had its own abundance of marvels, including another glove-plant:




There was also today’s ‘find’ to look at.  This was recovered from the stream:
“Some of us are hooked on these things”
Apparently the fact that this item is forged, rather than cast, means it is stronger.  Anyway, it was duly pocketed by a volunteer who could make use of it, once the old wire had been cut away.

After our fortifying coffee & cake, this was where some of us were despatched to:
Not a pond, as you might think from the view in that direction, but what is meant to be a ditch, as you can see from this second shot, looking back to where the Green-Gymmer had already been:
There was enough mud, of Third Battle of Ypres Day 1 consistency, to make this location feel like a shallow trench.  Progress was best made by placing the feet as far towards the edge as possible, and leaning on the side of the makeshift walkway to take as much of the weight off as possible.  But Green-Gymmers were still smiling:

Meanwhile, the boardwalk-repair job had entered the construction phase.  For reasons not entirely clear to me, this included some excavation beneath the level of the frame:



Progress was slow, but steady.  There really are, after all, no shortcuts to success.  And as one of the workers explained, they were not making it up as they went along: “It’s called improvising.”




At last, the session leader could take his ‘after’ photographs, and the remainder of the team could disperse: