Tuesday, September 24, 2013

Digging, Dibbling and Living the Life: A return to a mangrove restoration project in a former shrimp pond.

Bang Lang Da Village, Krabi Estuary, Thailand
DW with Jim Enright of MAP and three little Rhizophora mucronata in the pond 2009

Same view, same three trees 2013
Mid-dig in an abandoned shrimp pond, I would not normally have answered the phone. Number blocked. As it turned out, it was a friend of mine from the UK wishing me a happy birthday. I had completely forgotten. Kind of her to think of me, and we chatted for a while about the stresses of a London existence and running her business, mad traffic, the price of shoes and the flattening UK weather.

‘You're really living the life!’ she concluded.

In order to avoid my phone being filled with rain, I'd been bent double and twisted over to shelter it.  The rain was stinging me so hard I used a shovel as an umbrella. The wind had picked up making me shiver involuntarily as I was sodden from sweat and rain. Mercifully, that day's two hour digging session was being drawn to a close by the evening call to prayer from Bang Lang Da's mosque and the gloaming. I was shattered - hands, back and shoulders aching - and still had 26k to scooter home in the hard rain, along the side of a two-lane intercity speedway. Living the life, indeed.
A spot of rain. 2009

In 2008 NGO Wetlands International - Thailand (WI-T) had identified this former shrimp pond for a demonstration mangrove restoration project. In Thailand, land tenure is the most difficult issue, before social challenges and technical details. So it took nine months to find the owner and get an MoU signed. Only then could the team of Jim and Ning Enright from Mangrove Action Project, K' Donnapat (Dos) Tamornsuwan and I (WI-T) talk with the local people about the history of the 0.7ha pond and what they wanted from it.  
Meeting the community
The area had previously been mangrove but around 2001 had been 'converted', as the euphemism goes, by an ‘outsider’ into a pond for rearing shrimp. However, as is common with much aquaculture in Southeast Asia, soon production dropped off due to a combination of limited technical ability, high stocking density, poor water quality and shrimp disease.  Unable to pay the shrimp feed bill, the owner lost control of the pond, and it lay idle for a few years.

When we first saw the pond, the action of rain, tides and burrowing crabs had eroded the mud around the boarded-up sluice gate and the tide was flushing the pond well. This was fortunate as reconnection with the outside hydrology is normally the obligatory first step for pond restoration. Flushing removes the toxic residue of uneaten feed, dead shrimp, chemicals, antibiotics and acid-sulphate soils that remain after shrimp farming has been abandoned.  Sea water or brackish water rebalances the pH and carries in with it useful micro-biota and mangrove propagules. Despite this the mangroves were not regenerating. With available propagules and appropriate conditions mangroves should be able to naturally regenerate and colonise new areas.

Mapping and measuring the pond's spot heights with an auto-level confirmed our suspicion that the lack of regeneration was due to the soil being too low relative to sea-level – effectively mudflat. At low water small pools of water remained and the soil was constantly waterlogged.
Setting up for measuring spot heights across the pond, 2009

Following the natural channels that were still visible, I slowly started to improve the drainage by deepening and widening these channels, and used the spoil to form hillocks, similar to mud-lobster mounds, which formed areas of higher elevation suitable for mangroves.  The hills of mud (here with a very high clay content) stabilised fairly quickly, after the water had been squeezed out, and appeared to lose only 1cm a month from subsidence and erosion.

The hillocks provided the opportunity to test lots of ideas, all of which villagers could do on their own and at very low cost. This included leaving some of the hillocks blank, dibbling (direct insertion) all manner of seeds and propagules into other mounds, transplanting mangroves I had been growing at home and testing the use of damaged Rhizophora propagules with their apical buds broken to see if they would survive (they did).
Dibbling straight lines only to reveal damage / missing propagules
Short sections of the mangrove associate herb Sesuvium were dibbled into one hillock and a pond wall and these also started growing happily.

Testing and learning was not confined to what we could do with plants on hillocks, but also the actual implementation of the work within a budget any village could produce. From the very real problem of appropriate footwear, to best channel shapes, which shovel would last more than four hours (we tested five) and to how to label individual plants without damaging them in these harshest of conditions.
 Deepening and widening channels sounds perfunctory. What it actually meant was cutting dense heavy clay blocks like an Irish peat cutter and shovelling them up high enough to form a mound of the appropriate height, far enough away so that the mound would not fall back into the channel or collapse the edge. In order to make explanation of all this testing easier to bemused villagers and visitors, signs were inserted into the hills, channels and plots with an identifying letter.  At mid-tide, with water covering the pond floor but not the hillocks, the site took on the appearance of a golf driving range.

Seven control plots were added at various heights, though some of the village children needed more than one discussion to understand their function.
Singing in our control plots
Unfortunately, after a year, the control plots' metal rods proved too tempting for some miscreant. Monitoring the control plots showed that during 2009-2010 there was no successful natural regeneration.  We also tested dibbling directly into the pond floor in a dense 3x3m block. To the surprise of both the local conservation group leader, Bang (Mr.) Don and the team, these clumps of 50 R. apiculata propagules survived and thrived, whereas singletons which drifted in on their own elsewhere in the pond almost always failed.

A constant problem on the site was the amount of debris. Floating debris can collide with and physically damage young mangrove plants. Returning to the site this month (Sept. 2013) we were delighted to see how much the dibbled mangroves had grown on the hills and how many volunteers were now thriving in places where they had repeated failed.  This mangrove growth was now effectively trapping the floating debris, without being damaged by it.  Also encouraging was the continued erosion of the pond walls at the opposite end to the sluice gate. We were prohibited from making another breach of the walls. Nature seems to be doing it for us.
2013
Same view 2009

Sadly what did not survive was Wetlands International - Thailand due to serious financial management issues. But the pond still lives and the local people told us on our last visit that netting the sluice gate at high water allows them to collect an amazing amount of fish and other creatures from the pond as the tide runs out.
Thank you to the people of Bang Lang Da for their tolerance, to APFED for the funding and to K’ Ning, Jim and K’ Dos for their support and good humour.
DW with K Donnapat Tamornsuwan of WI-T, 2009

For more on APFED please see http://www.apfed.net/

Wednesday, July 25, 2012

An Ecological Mangrove Restoration Training Session in Krabi,Thailand


A short film I put together documenting a training session MAP facilitated in Thailand, on behalf of Global Nature Fund, to help start some mangrove restoration programmes around south and southeast Asia. Enjoy.

Monday, July 16, 2012


Conference on Mangrove Ecology, Function and Management, Sri Lanka, July 2012

Thank you thank you, Mark, my super. Unable to get an abstract to a conference committee in Sri Lanka in time he kindly allowed me to use his budget from a project to attend. Though focusing on crabs and beasties in mangroves there were plenty of other topics being presented, and possibly two of my ‘names’ whose papers I’ve read, attending. There was also a reasonably stellar list of general mangrove people penned in to talk, so well worth rocking up.

Better advertising than most, but apparently a massage shop only for mermaids


Having been a habitual traveller to southeast Asia, which flies out of LHR T3 (southeast Asian madness starts in T3 – there’s no need to fly anywhere), the smartness and efficiency and cleanness of T4 (Qatar Airways), came of something of a shock. Carpet tiles were not curling up at the edges like exhausted sandwiches. Escalators escalated. Connecting tunnels from the underground to the airport weren’t hospice grey. Unfortunately I was flying with a pair of cargo pants that had lost their main button (Delli, we need to talk), so had to shuffle through security, belt in the scanner, clutching my trousers like I was about to be vigorously ill. The mother in front of me, with three small’uns, was not impressed.

Wide-bodied London / Doha was easy, with a HUGE choice of films and similar service to EVA, my normal carrier to Thailand. Amazingly both my bag and I made the 45 minute transfer to the narrow-bodied Doha-Sri Lanka jet, despite the inbound jet not stopping at a stand but at a bus stop. However this second flight, starting at 3am my time, with no sleep, for another techy 4.5 hours, crammed full of screaming kids and Italians, was trying.

The point of travelling overnight was to ensure that I arrived in Colombo in the morning, as the way to the conference, in Galle, in the bottom left hand corner of Sri Lanka, was by bus. My hotel was in the middle of not much and might need to be eyeballed if the bus chappies didn’t know where it was.  So, a first bus into a nearby town, another into Colombo-proper, a third to Galle town in the southeast of the country, and then a more tricky fourth to my hotel. When I say ‘bus’, these were more like an ultra-low tech fast-jet simulators, driven at the same speed and incurring the same g-forces, but built for small Asians without luggage, without the need for any leg room but plenty of sharp points and edges from the kneecaps down. The ubiquitous horn was pointless – if you’re fast and big, other vehicles got out the way, especially if the bus had just lurched into the middle of the road, over the double solid white lines, overtaking on a blind corner. The hotel was somewhere along the coast road, not in any town, so was a little tricky to find. However, I met someone who knew all the hotels along the coast, of which there were thousands, and finally got there, 5pm their time after ten hours of continuous buses. Splitting dehydration headache and exhaustion was cured by diving into bed and staying there until the next morning.
Establishing shot of Hotel


South Beach Hotel at breakfast

The conference venue had been moved with three weeks to go, from a local uni to Long Beach hotel, Kaggala. Instinct suggested to keep it simple and stay in this hotel. However at $140 a night, some complexity was needed. Plan B, South Beach hotel was a fraction of the price and 1km away. Kushtie! Surprisingly I was the only conference goer in this hotel.  So the week was spent commuting up the coast to listen to the great and the fabulous about the day jobs and dining preferences of crabs, relative sea level change (finally I understand why it’s complicated and site-specific), mangrove/salt marsh interaction, mangrove dispersal modelling (way over my head), carbon fluxes, Ni pollution, the life’s work of Philippine National Treasure Dr Primavera, seed dispersal testing, and lots of geographic updates. Not quite my bag, but all really interesting and some truly lovely people. It also has to be said that there were some dire presentations; long screeds of methodological detail mumbled inaudibly, screaming for the only question that ever counts – SO WHAT?

Middle Wednesday was a field trip. The roads in Sri Lanka are like writhing B roads in the UK, trying to get through a farming town during market day set up. Moving round the island is slow and we had to start Really Early. Three hours after meeting up, 10km north of my hotel, we drove back past my hotel on the way to a blow hole, a developing sand-dune ecosystem with entirely inappropriate intervention from a well-meaning NGO, a temple with an amazing view, a driving break as the bus screeched to a halt so the busboy could stuff a few rupees into a giant concrete chicken, two lagoon systems, lunch at the Sri Lankan Small Fisheries Foundation and saw much of southern SL. Particularly along the south coast there were terrible reminders of the tsunami. Concrete floors of the base of houses, with only the squat toilet left and everything else scoured away. Lots of gravestones. And of course frenetic building in the same spots. Big learning for me: the bottom third of SL is very dry and sandy. Surprised as the WHOLE of Thailand is wet and tropical, and given 15 minutes of someone not trying to build on it, junglely. When it rains it rains everywhere. But SL had quite different zones. So there was a lot of thorny scrub, sand and empty space.

Thursday evening included a SL cultural evening, with traditional dancing. 



On Friday evening, at the end of the conference, saying goodbye to new friends and the splendid Dr Balaji (he who we helped, Loire Valley Loungers) from India, who deservedly won the IUCN’s young environmentalist award, many people headed a little way up the coast from Kaggala where the conference was, to Unawatuna. Central along this bay was the very nice Unawatuna Beach Resort. Arriving there late of Friday, for the last mass drink, I asked if they had a room at the same time spotting a big Jag in the car park. Thankfully they said, get lost little boy, and so I found the charming Mr Sarnath running ‘Sunny Mood’ guest-house right behind it. No pool but perhaps 10% of the cost of UBR (only tuktuks in his car park, and a sweet if skinny Alsatian). Spent a very pleasant weekend recovering from the conference and taking some pictures. New experience for me; seeing a turtle in the wild. The beast came close to the beach, saw the swarms of full-sized tourists flat out on loungers and thought better of it. But a turtle all the same.

Monday meant heading north to just under Colombo to see Abey, the boss of EMACE, an excellent little NGO doing childcare/orphan, women’s rights, housing, mangrove rehab and other stuff. Changing buses in Galle bus terminal, I asked the driver for Katubadda, Abey’s town. Wobble of the head. Then I asked to be dropped outside a specific craft shop called Laksala in Kutabudda. Another wobble. And good as his wobble, three freezing cold hours later we lurched into the pavement right outside this shop, cutting across the umpteenth tuktuk (whose lights ALL work! Anyone who has been to Jakarta or India will appreciate what a novelty this is. On all the tuktuks, ALL the lights worked. Stunning.) Abey came to pick me up and we had a very pleasant lunch at his house.

Abey is a part time property developer, which pays for a lot of the NGO activity. We met in Thailand in March as he attended the mangrove training I delivered there with Jim of MAP. The new project that had paid for the training was encouraging mangrove restoration in the participant countries. So I offered to help Abey, as well as see what his NGO was up to. Their work centres around Bolgoda Lake, 20k south of Colombo. Additional to the usual problems inland lakes suffer from, this one has a huge furniture making community on its slopes. Tonnes of sawdust is washed down into the lake when it rains, which is also chock full of water hyacinth. EMACE had built an eco community centre/guest house on the lake shore, with a couple of big Sonneratia mangrove trees right in front of the house, and I was to stay here for a few days. The view from the balcony is beautiful, and we were 10 plots down from the oldest sailing and rowing club in Sri Lanka. As I type part of this blog, various fours and sculls are slipping backwards across the lake. But the sound track is of a terrifying amount of wood being cut up to make furniture, all of which is uncomfortable. And these guys get their bandsaws moving at 5am.
Just imagine a favella hillside, with narrow lanes, covered in yards like this

The next day we drove round the lake to see their old office, two mangrove nurseries and their proposed restoration site. Interestingly, rather than being the usual trashed and cleared area, this is full of fresh water grasses and huge invasives. Green, but not very productive and no good for the fishermen. The next day I edited a document about this project for Abey, and finished with an amazing boat trip round part of the lake, with Saman who is the caretaker of this building. Skinny as a jockey, Saman used to be… a jockey and has travelled the world working the horses and riding, including a long time in Doncaster (!). Saman is an excellent cook, does all the running repairs to the house, and looked after me royally. Sitting on the balcony of the building, and while taking a little boat trip round part of the lake system, I’ve taken some slightly fuzzy pictures of loads of birds (yes I know, Benjol, tripod…), seen a pelican, sea eagles, watch two mongoose chase each other like squirrels, witnessed two 7 feet non-poisonous snakes dance for 15 minutes while personally feeding the hungry appetites of possibly hundreds of thirsty mosquitoes.



Abey and EMACE done, the third week was supposed to include a meeting with a mangrove guy in the Environment Dept and a familiarisation with Colombo. Sadly this meeting was canned, and as SL is a bit more expensive than I hoped, rather than heading south for a holiday, I changed the return flight and headed home early. There’s still plenty to see. The northeast has had no development work for 30 years (just watch your step!). Kandy and the central highlands are another place that should be seen. However, as a non-earning, self-funded student,…  The return was easier, apart from having to start the first leg at 4.25am. Thankfully, this flight was only two-thirds full and on time, so the transfer onto the similarly 2/3rds full flight from Doha to London was easy, and the pre-Olympics LHR very efficient.

The flying time gave an opportunity to reflect on SL: the strange feature of constant sea spray mist in the air along the west coast corroding everything in its path; the Sri Lankans themselves who were very friendly; the technical difficulties of restoring a EMACE’s mangrove site with a very low tidal range of perhaps 50cm; the still-palpable relief at the ending of the war with the resulting apathy about the post-Soviet-style asset grab by the president and his family who control 75% of the economy; the mixed feeling about Colombo and what it might be like to live there; those bloody mozzies and that despite the marvellous George (brother-in-law) being back in Crete, I’m glad to be home.

Please follow the picasa link if you would like to see all the pictures.
https://picasaweb.google.com/111581195668547069776/SriLanka2012MMM3?authkey=Gv1sRgCKawvtiPudr6jwE
Thanks for reading.

Monday, April 11, 2011

Myanmar Part Two: On Your Feet, Son. Get Teaching

The Training. The first part of our Myanmar mission was to run a mangrove restoration training programme for a mix of victims; local villagers who were predominately rice farmers, generalist local NGO types, bemused of the UNDP (another sort of NGO but as organisations like UNDP / UNEP and IUCN have permanent flows of money, they live in a different world of comfy hotels, expenses actually paid, endless conferences in exotic locations and commissioning other groups to actually do the dirty work) and Myanmar forestry chaps. Perhaps 50 in all. Different levels of awareness of conservation issues, values, previous knowledge and interest. 
Jim has had a lot of experience doing these workshops around south and southeast Asia. This would be his 14th. But Myanmar was new for him as well as me. Normally one would do a recce of the location beforehand, engage a local NGO who would sort out local logistics, find a gaggle of translators and help with the admin. Groups would be smaller and not mixed. Myanmar was different and new as a training venue for both of us. We agonised about how much powerpoint to use (for pictures and illustrations, not huge screeds of verbiage). How much mapping could we use and would be understood? (Mapping is cultural – some places just don’t have an idea of a 2D representation of their 3D world.) Would there be (regulated!) electricity, a suitable venue, a wall to project up on to? Would there be any local mangroves to use for field trips and examples, because life from Google Earth looked pretty grim and barren.

Communications with Dr O, our FAO boss who lived in Myanmar, were very difficult as the government censors often brought all email to a halt while they read through email and attachments. The project had been delayed several times before. And a key member of the team (a colleague of Jim) dropped out with a few weeks to go. So it was a bit fraught trying to organise ourselves, be as prepared as possible and flexible. On top of this, presenting through translators brings down any work rate by 50% and much feedback is lost. You never know how the material is being translated, and for the translators it’s a shattering job.
However, having bouncy-castled our way ten hours north in some vintage vehicles, we were pleasantly surprised to find a large hall in Kyauk Phyu complete with a picture of Than Shwe the current Dictator/Lead General, rather village hall-like in feel, electricity which didn’t cut out once, a projector screen which the FAO had previously given to the local forestry dept and everything else we needed. So having had a rehearsal day with the translating team, San from the forestry department and Khin from FAO in Yangon, we had an amazing evening recce around some local, trashed mangroves and found what we needed for the field trips, close to town.


Those of you of a more pictorial bent might like to go to my Picasa public pages and see what KP’s river looks like. While there in the late afternoon, the light became more and more golden from the local people cooking on a million fires, and just wonderful for taking photos. People were busy floating huge rafts of bamboo down river, fixing boats, flaming bugs out of their boat timbers (local knowledge tip # 54, fill your boat with water first, before setting fire to the outside), moving nypa palm roof sections into town to sell, collecting firewood and fishing. Behind us, as we looked over the river, standing on a huge, hand-dug dyke, was a previous mangrove area, converted to rice paddy. Rice growing is a national obsession in Myanmar, but as it’s rain fed rather than irrigated, they only manage one meagre crop a year, and for the rest of the time the land is useless – on average a gaining a value of only $150pa/ha, a fraction of the ecosystem services mangroves provide for the same unit area. As a result, poor local people practice shifting rice agriculture, impounding vast areas of mangrove, waiting for the stuff to die off, and then farming the area for rice for a few years before moving on, leave a huge, desolate circle of useless, exhausted and slightly saline land, cut off from the tide, where nothing grows. Ironically, Myanmar has loads of gas. Great bubbles of it. Gas balls that my father would be proud of. But it is all exported to China and the people are left to chop down everything standing to cook with.


The next day we got up early to start the training at an appropriate time. Opening my door a waist-high Lesser Adjutant Stork accosted me, fixing me with its surprisingly blue, unflinching eyes. Tame, inquisitive, with straggly neck like a vulture, it pulled my flipflops off the step and tried to run off with them. Nesting material or starting a second hand shoe shop? For either, those shoes would not be my first choice. The next day it found a loop of wire we had in stock. Unfortunately it was just the wrong diameter to walk with, so with the loop in its beak, it would trip down the steps, getting tangled up in the wire.


We got the training hall and started to set up. Pleasingly, many of the attendees arrived early, as they did every day subsequently. While we were setting up, someone told us that the army top local brass wanted to attend and open the show. Desperately we scrambled around for appropriate chairs and gifts for them (cultural thing). And just as some formal wooden sofas arrived from our hotel, we found out that the mining minster was in town, and they wouldn’t be coming, after all.

The first day was ice breaking, finding out what all these people were thinking about, intro to what we wanted to teach etc and finishing with the first field trip. We were surprised by how willing they were to listen, do crazy exercises when we felt they were getting a bit sluggish, chat and so on. The field trip was to the area recced and described earlier. Split into two groups, Jim did the social impacts of what was going on in eyesight, and I did the more scientific / practical and much discussion. Then back on the amazing bus, with a catflap at the back, rattan and plastic window, inappropriate pole dancing pole in the middle to hold the roof up, and visible metal radial showing through the tyre tread, back to the hall to conclude the first day.

The rest of the training went really well. We covered some very basic biology, mangrove zonation, previous failures (ie the majority of mangrove projects), law, hydrology, transects, mapping blah blah blah. The second day we made them run a transect through some mangrove, noting species, soil, features, dbh etc. Having allowed them to draw the next day we were amazed how well they had done it and annotated their work.
At the end of the fourth day, we bought boxes of beer, and at their suggestion we went to a local beach with a lot of snacks for a small party, which they really enjoyed. Locals were bemused and underwhelmed by watching your bloganaught trying to extract a cork from a bottle of wine with pliers and a bottle opener. I wonder what the Burmese is for 'muppet'?



Always prepared, just not for a drinks party. More anon.

Wednesday, March 23, 2011

Myanmar Pt 1. Wood, Soil and Water

Myanmar, Part 1
Of course the embassy reflects what the country is going to be like, just as dog mirrors owner. Arriving at 8am on a Monday we found a queue of ten already in various forms of ennui. By the time the door opened at 9, perhaps 40 people were waiting. Previously it was possible to put in an application for a visa via an agent. Now one had to turn up in person. Why? Not a question was asked of us.

When the doors opened, which counter to join was not obvious. A small sign at window 4 indicated business visas. So we joined that. However, having got to the front of the queue, the woman said, that we had to join the main tourist queue, to get a queue number, and then re-join the business queue to put the passports in. Several people were caught like this. So we tried to ask at the front of the huge tourist queue, now stretching out the door, causing much wailing and nashing of teeth, as this one window handed out numbers, forms and took in applications, operating treacle-like. So, rejoining the back of the tourist queue, it took an hour to get to the window just to get a number. And then a wait for the number to come up for the biz visa. According to a couple of people who did this application frequently there were often fights and punch-ups.

Needless to say though a/c machines were present, they were only ornaments. 60 people were serviced by one ineffectual fan in a small, hot, common-sense proof concrete bunker. Pick up, the next day, was equally dumb, made more urgent by closing the day after for 'Peasants Day'. All this could have been solved by one member of staff walking along the orderly queue outside the embassy before the doors opened to hand out forms and appropriate queue numbers. This stupidity, shouting, fighting, sweating, dismal human condition is played out day after day.

Disappointingly, the visa issued was only for the days planned in the country, rather than six months or a year. So any logistics fluff-up, breakdown, internal flight commandeered by an army commander wanting to get his farm’s fruit to Yangon market in a hurry, and we were going to be in trouble.

The next day, Jim and I flew from BKK to Yangon. Yangon? Who the hell flies to Yangon? Who on earth can get in? Our security clearance took six weeks alone. All the traffic flows the other way, driven by economic refugees and the very poor Burmese looking for work in Thailand. Thailand is kept moving by Burmese prepared to work for wages a Thai wouldn’t stop eating their snacks for. We were expecting to be rattling around in an empty plane, playing tiddly winks with the crew and taking turns flying the the plane. Actually a shockingly smartly dressed crowd of senior Italians and Dutch, coloured cords and Hermes scarves, were on a package tour and the flight in an aged Airbus was rammed. Our tiddles and winks didn’t see the light of day.

Since I was last in Myanmar in 2002 they have built a new international terminal. All efficiency, smiles and granite. Some porter had managed to do the Indian trick of picking out all our luggage before we had cleared immigration and had it loaded up on a trolley. Jim, being the good soul, let him get us out of airside, and into a taxi for the short ride to the domestic terminal, the old terminal I remembered, which resembled and smelt like a cross between a crumbling Indian bus station and Krabi hospital outpatients dept. Meeting Dr O and two local FAO staff, we got onto our internal prop flight up to Thandwe, a short 45 minute hop up-country. Surreal experience # 7, bouncing around at 14,000 feet over this notionally militarised country, in an old Alitalia prop, listening to ‘Close To Me’ by The Cure. 
This was the easy bit. This flight got us part way up the country to the popular resort of Ngapali, where we chilled out for the rest of the day, trying to working out how many inches of Kyet local currency to the dollar, in a nice little set of low-tech bungalow rooms facing the sea. Elec from 6pm to 6am. 

The next day, however, we needed to drive 10 hours in a minivan and old car further up country from Ngapali to Kyauk Phuy (KP). The problem with these roads is that the surfaces are so bad, the teakwood bridges so rickety and fully of tyre-pricking nails sticking their heads up from the warped boards, that time travelling by road is downtime. Seatbelts would be a huge help to stop passengers from banging their heads on the vehicle ceiling and to hold bags in place. Unfortunately, old minivans and cars in this end of the world are rarely equipped with the aforementioned and all the shocks are worn out, causing sickening thuds when they bottomed out in a big pothole. So travel is watching the world go buy. And this was in the dry season.

Fish and rice drying out in the sun. Huge piles of rice straw piled up in cones, off the ground. Mini terraced rice paddies, lying uselessly in the sun for eight months, waiting for the one rain-fed crop per year. Filthy kids playing in the road, seeming unphased by the huge dust clouds we threw up. Vast areas of trashed landscape and trees mullered for cooking fuelwood. Pagodas rather than the temples of Thailand. Surprisingly clean and free of rubbish because the local people can’t afford snacks and shite in plastic wrappers. And a hundreds of collapsing bridges (note the split in a main beam). 


Having left at 7am we arrived at the town we were going to work at (KP) by 5pm in Rakhine State. We had a good look at this on Google Earth before coming as it’s in a ‘restricted area’ due to being close to Bangladesh. Ie no whities, tourists, reporters or anyone who isn’t in the oil and gas world. After a lot of grief Dr O had found a hall for us and for four days we were going to conduct mangrove restoration training for the FAO, as part of a much larger mangrove project. We knew Dr O from a mangrove training in India in 2005 so that’s why Jim (at MAP but in Myanmar as a private individual, like me) got the call, and he asked me to support him. Ironically there was an airstrip (and golf course!) about a five iron away from the hall but this was for government staff only.

The next day was spent talking with the two local FAO staff, U (Mr) San and Miss Khin (who had an MSc from Bangor Uni of all places + Dresden). We had previously explained the training we were going to do, but they hadn’t seen the .ppt nor how were going to keep 50 people from falling off their chairs from boredom and heat exhaustion for four days. An added difficulty was the mix of the crowd. Some Myanmar forestry dept staff, NGOs, UNDP staff and local villagers from mangrove areas.

The first evening we came across a group of 9 Indians, bored out of theirs skulls in the hotel. They were part of a gas pipeline dredging team, waiting for their dredger to arrive from India - ten days to wait and weren’t allowed to leave the hotel, drink, party or cause any trouble at all. No internet as internet penetration in Myanmar is like Rolls Royce Phantom ownership in Yangon. No mobiles as ownership is restricted and CDMA rather than GSM. Four of them were newly married. They were so bored that the cricket on TV and 1970s Indian films being shown, all wobbling heads and needless dancing, failed to enliven them. Even their Indian curry multi-compartment plates looked like prison canteen trays. They were desperate.

The Mangrove training was fun. For once there was complete .ppt freedom from corporate ID and colour use, so we went mad. Loads of pictures. Very few words. Loads of build. Dancing arrows and indicators of where to do what. You can take the suit off the ad-man…
More on the training in the next installment.

Saturday, February 5, 2011

Lessons Learned from the Final Report - Non Scientific Reporting

Site Survey, March 2009. No natural regeneration
This site was chosen as it was a typical aquaculture pond, carved out of former mangroves. The pond had been abandoned for 5-7 years and the mud walls round the blocked sluice gate had eroded, thus allowing tidal flushing for 2-3 years before the project started. However, despite the availability of propagules and seeds, the pond floor was not regenerating. A site survey supported the hypothesis that the pond was not regenerating due to the substrate being too low, relative to sea level – almost Watsonian (1928) mudflat. Mangroves surrounding the pond were growing at levels higher than the pond floor. Therefore the restoration part of the project attempted to correct this by raising the height of some of the substrate and improve the drainage.

Hills Stable, Channels Less So

Feb 2010. 
Most of the effort has been focused on repairing the topographical damage - widening and lowering the channels across the pond to improve drainage and with the spoil creating a series of hills, of drier and firmer substrate. Approximately 32 hills have been dug and 60m of channel improved or dug. Each of the hills is about 1m high by 3m across, weighing about a tonne. This has provided more substrate at the appropriate height for mangrove growth and better drained soil. Many of these hills have quickly been colonised by crabs.

Despite misgivings by local people, once settled, and water squeezed out of the clay by its own weight, the hills remained relatively stable losing between 10-20cms height over 18 months. For example, Hill A, the first hill produced, has settled and lost only 16cms in height, between March 2009 and Jan 2011. Though the sample is small, vegetated hills seemed to be more resistant to erosion, possibly from the protection the leaves offer from the rain.

Digging the channels and producing the hills was hard work, and required the sides of the hills to slope only gently, otherwise the sides would buckle out. Thus producing much higher hills required disproportionately larger amounts of digging. However this is a viable method for amending topography changed by pond conversion, and could be a livelihood opportunity[1], or done mechanically.

The channels, on the other hand, were less stable. Testing revealed that channel sides needed to be sloped at very shallow angles, and nearby surface ‘sloppy’ mud skimmed off and piled onto the hill. The pond contained so much fine clay material, and the process of working and walking in the channels churned up the mud so much, that the channels tended to fill in more quickly than the hills subsided and eroded.

Plant Growth from Dibbled Propagules

A random sample of hills was dibbled with various mangrove propagules. The first hill to be dibbled[2] was Hill C. This received Rhizophora apiculata, dibbled on 22nd March 2009. The chart below shows Hill C’s encouraging and continued growth. It also shows that though propagules were dibbled around the base of the hill, mid-way up and on top of the hill, the heights attained by the surviving plants suggest that lower plants were slightly taller than the higher and mid-level plants.  
 Plant growth on Hill C (Rhizophora apiculata)

This pattern of good growth on the hills is repeated for Ceriops tagal and Bruguiera cylindrica. Nypa fruticans has been slower to establish itself, and some of the Nypa hills have failed (eg X, R), but is still growing on Hill H and D, average height 90cms.

Growth Comparisons

To compare dibbling on hills to dibbling into unaltered pond floor, four ‘Test Planting’ plots were established. TP1&2 received R. apiculata propagules. Much to everyone’s surprise both these plots thrived, despite very little other natural regeneration on the pond floor of any species.

Initially, the TP plants struggled up quickly to gain more height, at the expense of far fewer leaves, and leaves that were 50% of the size of those on Hill C. However, almost two years after the event, the leaf size difference has largely gone. Similarly, TP1 average height is 100cm and TP2 110cm to Hill C’s 95cm average, so now all about similar height.

Dibbling Avicennia marina on Hill P initially produced limited growth of approximate 10 plants from 50 propagules around the base of the hill. In the adjacent Test Planting plot 4 where 50 A. marina propagules were dibbled into the soil, only one plant survived. Eventually, all the A. marina died on hill and plot. Predation by crabs is suspected.

B. cylindrica was dibbled into Hills F and L. Ceriops tagal was installed in Hill E (below). Both were dibbled into Test Plot 3. Sadly all the B. cylindrical on Hill L died, but both E (av. height 34cm) and F (av. height 60cm) survived. Compared to the Test Plot 3 dibbled directly into the pond floor, growth seems to be marginally easier on the hills.

Debris. A Possible Cause of Plant Death

Of constant concern was debris that floated into the pond from the outside. Hills E (above) and L appeared to have sustained impact damage, and the tops of both hills had been cleared of dibbled plants, but the plants lower down the slopes surviving. There was a lot of debris in the corner of the pond, and occasionally with a high tide and change of wind direction, this would shift to the other end (see below). It is suggested that this movement, and debris in general, killed off some of the plans, and also reduced the amount of successful natural regeneration within the pond. 
  
Control Plots Remained Empty

Seven 3x3m Control Plots were installed over the pond to monitor natural regeneration on the pond floor. Though the rods demarking the plots were eventually stolen, the plots remained empty.
And Almost No Natural Reneg On the Hills So Far
It was anticipated that with hill substrate at a more appropriate height for mangroves, some propagules and seeds would volunteer onto a hill and start to grow. The site is not propagule-limited: towards the end of the rainy season many seeds of several species arrive in the pond. At the top end of the pond, which was on average 30 cm higher than the lower parts of the pond near the sluice gate, many propagules were seen to start growing in the pond floor, but would die off after a few months. The reason for this die-off is not clear as pH was never more acidic than 6, and salinity always between 22-35ppt. Leaves on the new arrivals did not seem to be suffering unduly from pest damage, though there was a considerable amount of water scum deposited on the leaves. Thus a suggestion is that the regeneration at the top of the pond was also damaged by debris floating over the pond.

Only one Xylocarpus moluccensis arrived on a hill (C) and set root.

It is suggested that once a hill is produced, rain and inundation erode the hills’ creviced surface, and in combination with a baking sun, produce smooth hard hills, which the seeds just cannot stick to. Sadly only one hill (E2, see below) was dibbled with Sesuvium, which might help to trap seeds as they float past, but as of Jan 2011 no species had taken hold within the Sesuvium.


[1] MAP and WI-T have successfully used local labour to excavate another site in at Ban Talay Nok, Phang Nga province. The link goes to a short film of the project.  http://www.youtube.com/watch?v=qKL3KJE3Xsw
[2]Dibbling’ is a process of inserting a seed or propagule directly into the mud, rather than either scattering them on the water, or growing the seeds up in a nursery. This was done to keep all costs to a minimum, and was a technique a village conservation team could easily repeat.