Issue 45 - January 2019
Success for sharks! Incredible numbers of reef sharks found in Philippine Marine Protected Area
Scientists from Large Marine Vertebrates Research Institute Philippines (LAMAVE), Tubbataha Management Office (TMO) and Marine Megafauna Foundation (MMF) have found incredibly high numbers of reefs sharks in Tubbataha Reefs Natural Park (TRNP), Philippines. The numbers are higher than most other marine protected areas (MPAs) around the world and highlight the importance of large, well-managed marine protected areas like TRNP for the conservation of reef-associated sharks and rays. These results provide hope for shark conservation in the Coral Triangle, where many populations are in a state of decline.
Dubbed the ‘Amazon of the seas’ the Philippines is regarded as the world epicentre for marine biodiversity. Approximately 200 species of sharks and rays exists in the country’s waters, ranking it amongst the highest in the world in terms of diversity. This diversity also means it has an incredible amount to lose from the pressures facing the world’s oceans: habitat destruction, overfishing, plastic pollution, and irresponsible tourism.
Fortunately, this study by LAMAVE, TMO and MMF shows that well-managed and enforced marine protected areas like Tubbataha Reefs Natural Park can be lifelines for species like reef sharks that are rapidly disappearing from coastlines around the world. Tubbataha Reefs Natural Park was declared a UNESCO World Heritage Site in 1993 and is the largest no-take marine protected area in the Philippines covering an area of 1000 km 2.
The rangers of Tubbataha Reefs. The rangers who protect the park are composed of members of the Tubbataha Management Office, Philippine Navy, Philippine Coastguard and members of the Local Government Unit of Cagayancillo.
While preliminary assessments for sharks in TRNP in 2005 and 2010 demonstrated high abundances of whitetip reef sharks, the goal of this study was to conduct a comprehensive assessment of all shark and ray species in the park using a combination of Underwater Visual Surveys (UVS) and Baited Remote Underwater Video Surveys (BRUVS). Underwater visual surveys were conducted by a team of scuba divers in various sites around the park in 2015 and 2016. Two spotters and one recorder dived along the reef at a constant depth of 15 m recording shark sightings over a known distance. Contrastingly, the Baited Remote Underwater Video Surveys (BRUVS) allowed the team to assess the abundance and diversity of sharks and rays at a wider range of depths from 1-100 m. The BRUV surveys also contributed to the worldwide assessment of sharks under the Global Fin Print Project.
Both UVS and BRUVS reported some of the highest abundances of grey reef sharks and whitetip reef sharks known worldwide. In fact, reef shark densities found during UVS were three times higher than in no take zones (off limits to fishing) in the Great Barrier Reef (Australia) and nearly twice those found in Cocos Keeling, Australia. In total, the surveys documented 15 species of shark and ray within the park including, but not limited to: tiger shark, whale shark, tawny nurse shark, grey reef shark, whitetip shark, silky shark, scalloped hammerhead and spotted eagle ray.
Juvenile grey reef sharks photographed in Tubbataha Reefs Natural Park. Credit: Gonzalo Araujo|LAMAVE.
Why are sharks thriving in Tubbataha Reefs?
The team believes there are a number of reasons why reef sharks are doing so well. The park is incredibly well managed and enforced, an attribute to the fantastic staff of the Tubbataha Management Office and the Rangers of Tubbataha Reefs. Secondly, the park has been protected since the 1980s enabling multiple generations of sharks to mature and reproduce without fishing pressure (reef sharks become sexually mature around 10 years of age). Finally, the size of the park (1000 km2) and its isolation from human populated areas has allowed the marine habitat to thrive in a natural state. There are clearly lessons to be learnt from the success of Tubbataha Reefs Natural Park that can be applied to the development of future marine protected areas. The team hopes that this exciting news highlights the success of the park for reef sharks and will provide hope and inspiration to others in the fight to protect the oceans.
Learn more here: https://www.lamave.org/press-releases/scientific-publcation-tubbataha-reefs-reef-shark-hotspot
Banner photo at the top: An aerial shot of the South Atoll in TRNP, which is located approximately 170 km east of Puerto Princesa. Credit: Simon Pierce|LAMAVE.
Large Marine Vertebrates Research Institute Philippines (LAMAVE) is the largest independent nonprofit non-governmental organization dedicated to the conservation of marine megafauna and their habitats in the Philippines. LAMAVE strives for conservation through scientific research, policy and education. www.lamave.org
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Issue 45 - January 2019
The Destination Guide to Loving Your January Blues
There are two things about travelling that are hard: doing it on a budget and doing it in an eco-friendly way. Modern day travelling, by nature, has an impact on the environment – usually it involves flying or driving to destinations and staying in hotels which often choose convenience over the environment. This is understandable, when it can often be more expensive to act in an eco-friendly way.
However, it is becoming easier and easier to travel responsibly, as the issue gets more prominence in the public eye. Although people say that tourism often destroys destinations in need of preservation, often that’s actually not the case. The areas need tourism in order to fund their upkeep and sustainability – and as long as people act responsibly, they can be maintained for generations to come.
Whilst it is becoming easier to travel sustainably, it is undeniably expensive. But this January, we have the perfect solution, to tickle some travelling taste buds whilst helping you to save money. The Destination Guide to Loving Your January Blues flips the idea of the January Blues on its head and showcases some of the best blue inspired destinations in the world, with tips on how to travel to them and discount codes for booking them.
With the potential to save considerably on your holiday booking, acting in an eco-friendly way while out there might be a little easier, with that little bit of spare holiday budget to spend. Whilst choosing whether it’s the Blue Lagoon you fancy visiting, or the Blue Mountains in Australia, it might be worth researching into eco-friendly places to stay and places to visit as well.
It’s the small changes we make in our day to day lives that help conservation efforts and saving money here and there – on things you might not otherwise have saved on, like flights to your next holiday destination – that really make the difference in enabling us to act more responsibly towards the environment.
Discouraging people from travel is definitely not the answer – encouraging sustainable travel definitely is. And if that means helping people out with some savings here and there, to ensure they can pocket the extra cost of sustainable tourism, then it seems like a good step forward.
To explore the destinations the guide has to offer, click here.
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Issue 45 - January 2019
Plastics are forever.
By Tom Brinkworth
The rise of the global anti-plastic discourse was born from the visual effects of plastic pollution. A six-pack ringed turtle, a plastic ensnared dolphin or the waste-filled belly of a whale confronts us in a way that no issue purely founded in academia can. This is the great failure of plastic and the champion of the green movement – an associative image that draws an emotive response. It motivates action. This is particularly evident of plastic in marine environments.
“Plastic is the most prevalent type of marine debris found in our ocean”
These images can, for example, drive swathes of people to their local beach in tireless dedication to a regular ‘beach clean-up’ for which no compensation is received. And still, at a long day’s end, an individual will look back on the events of the day and take in a breath of self-satisfaction.
The invasive nature of plastic on Our visual perception fuels the anti-plastic movement. But, emerging research has revealed a dilemma.
What if, before days end on the beach clean-up, a net-touting scientist were to pass by only to describe your hard-cleaned beach as filthy? That your days efforts accomplished little more than a face-lift. What if this operation removed little more than a fraction of the plastic on said beach?
What if most plastics on said beach remained untouched because they are imperceptible to humans?
The classic idiom ‘out of sight and out of mind’ does not just describe a human tendency to remove from thought that which is out of sight. It also describes how sight motives action. In this case, sight motivates a denouncement of plastic.
Enter, Microplastics.
Microplastics are not a new thing. Scientists and businesses have utilised them in everyday products since at least the late 1960s. But, only recently has the magnitude of their impact being realised.
So, what are these troubling denizens of a largely imperceptible world?
Microplastics are a subset classification given to plastic particles measuring 5mm wide or less. This class is broken again into two subcategories: primary and secondary.
Primary microplastics are intentionally produced as a raw material for use in pharmaceutical and cosmetic products; as an abrasive component; or as an additional component in many other industrial products.
Secondary microplastics are a by-product. It results from the fragmentation of larger plastic products, such as the breakdown of beach litter or the shedding of synthetic fibres in laundry. For example, synthetic clothing can release up to 700,000 microfibers during the average wash cycle.
Whether primary or secondary, all microplastics share at least one commonly concerning characteristic – durability.
The durability of microplastics and plastics in general, is the favoured property that spurred human interest. Now, this property presents one of the biggest threats to marine environments. As structural pollutants, they do not easily biodegrade and are highly persistent in marine environments.
“Nearly all plastic that has ever been released into the environment still exists today” – Aaron Jackson
The Problem.
The study of microplastics is an emerging field in the sciences and has only recently gained traction. Hitherto research ventures have been poorly funded and the field is understudied. There is little known about the impacts of microplastics on marine life and food webs, for example, and the exact severity of their presence in the world’s marine environments.
As a fault of, the extensity and density of microplastic concentrations in the world’s waters is constantly being revised up, as study after study finds new regions with increasingly higher concentrations.
The findings of a study published in Nature Geoscience concerning the River Tame near Manchester took samples from 40 sites and found upwards of 500,000 particles in these areas alone. The same study discovered that during heavy flooding, around 40 billion particles are washed into the ocean.
A study in British Columbia found microplastics concentrations of 9,200 particles/m in seawater. A separate study found that the North Pacific Gyre, otherwise known as the Great Pacific Garbage Patch, increased from 331,809 pieces per square kilometre in 1999 to 19,912,037 in 2014.
Studies estimate a global microplastic index of around five trillion pieces. (Although this is believed to significantly underestimate the true figure).
So?…
While studies are limited, the effect of microplastics on marine life is being realised. To many of these creatures, the true nature of microplastics is indiscernible, and it is mistaken for food or consumed unintentionally. Herein lies the danger.
Filter feeders, for example, are particularly susceptible to unintentionally ingesting microplastics. Creatures like whale sharks and manta rays swallow hundreds of thousands of cubic metres of water every day. This introduces microplastics into their body on a grand scale. In the Sea of Cortez, whale sharks were found to ingest 200 pieces of plastic per day. In the Mediterranean Sea, fin whales swallow about 2,000 microplastics per day.
Large filter feeders are not the only affected creatures. Microplastics effect all levels of the food web. Zooplankton have been observed ingesting up to 30.6 mm of microplastics – a hefty meal by the standards of Zooplankton.
The effects of microplastics on the body is an equally understudied field. But, evidence is emerging to suggest that the ingestion of microplastics is hazardous to marine animals. Known effects that occur from the ingestion of microplastics include nutritional stress, digestive system blockage, entanglement, inflammation, asphyxiation and more.
More concerning still is emerging evidence that suggests microplastics transport and bind to toxic chemicals, like phthalates; concentrates chemicals, like pesticides, in localised areas; and transports bacteria present in the surrounding seawater or that has been acquired during the transition from land to sea. All of which may be transferred into the body and have adverse toxicological effects.
Nano particles have been observed crossing the cell membrane and causing tissue damage; ingesting these chemicals and pollutants can affect the physiology of the host organism; persistent exposure can compromise a species fitness et cetera.
In the current timeframe of awareness and with the minimal breadth of information available to us, it is difficult to surmise the precise scale and breadth of potential issues. But, precedents set by past and current anthropogenic problems raise concerns around several potential effects, including bio-magnification and chronic toxicity. The concerns don’t stop here.
The most confronting insight for many is the realisation that microplastics have long been impacting humans. While indirectly affecting humans through bioavailability, microplastics in the food web has transpired into direct consumption of said plastics. For example, a study in Europe found that occasional consumers of shellfish may ingest up to 11,000 microplastics a year from this meal alone.
A review of 250 bottles from 11 leading water distribution brands found that 93 percent of the samples had on average 315 microplastics per litre. One sample contained more than 10,000 particles per litre.
Our future.
Plastic pollution has been synonymous with the recent history of man. As our societies have continued to move forward founded on ineffective waste management strategies and outdated perceptions, the issues of plastic pollution are worsening.
Globally, more than 330 million metric tons of plastic is produced each year. There are few adequate ways to dispose of said waste. Landfills simply concentrate plastics in a localised area and kick the can down the road. And, this most popular of methods collects microplastics that eventually reach marine environments through the airways during the breakdown process.
The failings of other disposal methods are far less… subtle. In the Pacific Ocean, nestled between California and Hawaii, an expanse 3 times the size of France contains a garbage patch fed by four ocean currents. It boasts the highest recorded concentration of plastic, comprising an estimated 80,000 tonnes of the material.
A seemingly endless and unbelievable list of the impacts humans have had on the environment through plastic pollution are easily searchable. But, even without research, it seems common sense that plastic pollution has been disastrous and requires drastic action.
The answer to halting future pollution is simple: stop using plastics. The solution to our past is nowhere near as simple. For in the same manner as diamonds, plastics are forever. (Diamonds are not actually forever. They eventually break down into graphite).
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Conservation Photography
A photo series from Myanmar

Old Bagan, Myanmar by Joel Sparks

Old Bagan, Myanmar By Roxanne Desgagnés

Inle Lake, Myanmar By Mega Caesaria

Hsipaw, Myanmar By Hakan Nural

Loikaw, Myanmar By Quinn Buffing

Taunggyi, Myanmar (Burma)

Hpa-An, Myanmar By Peter Hershey
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