Showing posts with label reef. Show all posts
Showing posts with label reef. Show all posts

Sunday, 14 December 2008

Coral Monitoring, Coral Bleaching and Climate Change

Why Monitor Coral Reefs? CoralWatch Data
Very little is known about the trends of coral bleaching on a global scale. There are many questions that need to be answered regarding patterns of bleaching and recovery as well as the severity and duration of bleaching events. CoralWatch volunteers will contribute data to help answer many of these questions.
Dive and snorkel volunteers make it possible to measure small natural fluctuations in the coloration of healthy corals to immediately identify changes outside of the normal range. With your support it’s also possible to monitor coral health throughout the year, not just during bleaching events, and help determine factors that influence coral health.
*What is climate change?
Earth is surrounded by a blanket of gases that keep the surface warm and helps make life possible. This blanket is currently getting thicker largely due to greenhouse gas release caused by burning fossil fuels and deforestation. As the blanket gets thicker more heat is retained underneath, which alters the climate. Because the ocean comprises nearly 70 percent of the earth’s surface, it is not only crucial to influencing the global climate, but also harbors some of the most diverse and important ecosystems. In addition, research currently indicates that climate change will increasingly challenge coastal and marine ecosystems in the next century. If current trends continue temperatures may increase 2.5 – 10.4 degrees Fahrenheit (1.4 – 5.8 degrees Celsius) by 2100.

What can you do?
Some changes are inevitable – even if gas emission stops today, the gases already released will have an effect in the future. This means that it is essential to do everything to avoid further changes. The good news is that because everyday activities also contribute to climate change there are many ways to tackle the issue on an individual level and as a diver. Here are 10 easy things you can do:
  1. Switch off your lights and electric appliances when not needed
  2. Choose energy saving appliances
  3. Use a line to air dry clothing instead of a dryer
  4. Use lids when cooking (water heats quicker with the lid on)
  5. Use energy saving light bulbs and recycle
  6. Walk or cycle when traveling short distances
  7. Use rechargeable batteries
  8. Share your concern with your local politicians
  9. Become educated and inform friends and family on climate change issues
  10. Contribute to awareness's and help with data collection by participating in coral monitoring activities
For more information on the effects of climate change on marine ecosystems, you can go to the UNEP World Conservation Monitoring Centre's Biodiversity and Climate Change Programme website or the online Climate Change Communication Initiative.

**Coral Bleaching
Bleached Coral Sample
Healthy Coral Sample CW
Couresy of CoralWatch, example
of bleached coral
Couresy of CoralWatch, example
of healthy coral
Increases in ocean temperatures contribute to coral bleaching episodes – a process whereby corals lose symbiotic algae (zooxanthellae), living inside their tissue supplying coral with energy. This loss leaves coral transparent and reveals the white coral skeleton underneath. This potentially fatal process yields the “bleached” appearance.
Although corals can slowly recover from brief bleaching episodes, coral death is common when high temperatures are sustained for long periods. And once bleached, coral is even more susceptible to additional pressures including pollution, overfishing and disease that often lead to coral mortality. Although the effects of bleaching range from moderate to severe, experts agree that bleaching episodes have become much more severe in the past few decades. And they are likely to reoccur in the future with increased frequency.


Coral Monitoring, Coral Bleaching and Climate Change

Monday, 25 August 2008

OceanNEnvironment

OceanNEnvironment only undertake projects that yield measurable goals and objectives.
Our positional statements are:

  • The single MOST important reason why coral reefs are dying is that there are too many people on this planet. We believe that if the focuses of our conservation efforts are directed to benefit the local people, like feeding them, or providing them with resources to benefit from the eco - tourism, the reef will save itself.
  • If long-term conservation is to take place - it is dependent on our capacity to persuade local people that they will be ‘better off’ protecting the natural system than degrading it, by creation of markets for goods and services in an environmentally manner.
  • If local people gain from sustainable use of the coral reef through tourism, they will protect this asset and may even invest future resources into it. Marine parks and reserves cannot survive without the support of the local people.
  • We believe that understanding, appreciation and love begets preservation and protection people can only protect and preserve what they love therefore it is important that they have affinity and connection to the environment. In this aspect OceanNEnvironment actively support marine research and educational programs with financial grants
See : OceanNEnvironment

Monday, 10 March 2008

Reef A Photographic Journey

“We feel a deep sense of connection with the ocean and its reefs and with that connection comes responsibility. Although we have lost almost a quarter of the planet’s reefs, those we see in this book still thrive — we are capable of saving them.” Sylvia A. Earle, from the foreword to Reef

Following in the steps of DK’s highly acclaimed Rainforest , Reef is a vibrant full-color photographic celebration of the world’s “rainforests of the sea” that pictorially progresses through an ecological chain that goes from algae, sponges, and mollusks, to the thousands of fishes that make their homes there, while showcasing coral reefs as one of nature's most magnificent creations. This vivid collection of photographs with accompanying DVD from underwater photography collective Scubazoo, reveals reefs and the thousands of unique and valuable plants that inhabit them as they’ve never been seen before!

Sales of this book support the Coral Reef Alliance.



Sunday, 3 February 2008

Asia-Pacific Coral Reef Program

Papua New Guinea, Fiji, and Indonesia : Asia-Pacific Coral Reef Program


Coral reefs of the Asia-Pacific region contain the most diverse concentrations of life on the planet. Indonesia and Papua New Guinea form two sides of the renowned diversity hotspot know as the “coral triangle,” while Fiji, diverse in its own right, is famous for its spectacularly colorful coral communities and array of endemic species. WCS operates a marine project in each of these countries, integrating ecological and socioeconomic research to provide novel approaches to conservation and management while meeting community needs.

The Human Aspect
The majority of coastal communities throughout Indonesia, PNG, and Fiji rely heavily upon marine resources for sustenance and income. With coastal populations rapidly expanding, and a move towards more modern, efficient and damaging fishing methods, many reefs in the Asia-Pacific region are facing threats of overexploitation and destruction. This in turn is affecting the livelihoods of the communities that are so heavily dependent upon the marine environment. Achieving marine conservation in the region requires finding a balance between conserving biological wealth and maintaining the livelihoods of the communities dependent upon the marine environments.

Threats
The most significant threats facing coral reefs in this region are overfishing, destructive fishing practices, and coral bleaching. The generally long life spans of targeted reef species, as well as the relatively low productivity of reef ecosystems, makes reef fishery stocks particularly susceptible to overfishing. Furthermore, a number of fishing methods commonly employed in the region, including dynamite and cyanide fishing and the use of monofilament nets, not only deplete fisheries stocks at an alarming rate, but also damage or destroy essential reef habitats. The bleaching of corals from elevated sea temperatures is also significantly changing reef habitats, and the long-term impacts of this phenomenon are still largely unknown.

WCS Activities
WCS uses an integrated natural and social science approach to identify which types of management are successful in maintaining or improving reef ecosystem condition and which socioeconomic factors are responsible for this success. So far, WCS has found that management systems that are most responsive to the needs and priorities of local communities achieve the best compliance with management regulations and subsequently achieve the greatest conservation success. WCS is now beginning to implement identified successful management strategies in receptive communities. In PNG and Fiji, existing systems of customary marine tenure (community ownership of reefs) will be used as an avenue to implement and enforce management strategies, while in Indonesia, alternative systems of management will be implemented and tested within the framework of national park zoning plans.

The long-term success of conservation strategies in the region will also rely heavily upon a strong local scientific staff to implement, monitor, and adapt management strategies. One of the major objectives of this program is to build the capacity of young local marine scientists to carry out research and monitoring within each country. WCS’ activities to achieve this objective include marine training courses, supervision of postgraduate projects, and one-on-one mentoring of interns working with the program. It is hoped that through these activities, WCS can build a strong local scientific contingent to continue conservation efforts in the Asia-Pacific region well into the future.

Important Next Steps

  • Continue to identify the most effective management strategies.
  • Develop optimal management strategies tailored to local social, cultural, and economic conditions.
  • Implement optimal management strategies in receptive communities as part of a locally managed marine area network.
  • Monitor, evaluate, and adapt management strategies to ensure their long-term effectiveness.
  • Train young scientists, conservation practitioners, and managers to be able to implement and adapt management strategies and to train others in marine research and monitoring techniques.

Saturday, 2 February 2008

Thanks to Long Island University Marine Biologists

All the staff at Matava would like to say a massive thank you to the 19 students and 3 professors from Long Island University. It was an amazing 3 weeks and we miss you all.

Once Claude, Sazie, Camille and Bridget (well done all of you), had all passed their open water course, we had 17 divers and 5 snorkellers every day. It was hard work, but by far the funnest group we’ve had. The competition was hot between the 3 dive groups, but Team Speed just pipped “The Diggers” and “Te’s Babies” for the title. Coincidentally I was guiding “Team Speed!”







Cheers Jason, Nikki, Marijah, Sara and Amanda for all the laughs.






So after 3 weeks of sharks, turtles, mantas, beer pong (Team Taco sucks btw), thumper (Ray you are a legend),two up (sorry Amanda) and general hilarity, its back to the norm for us here.



We’re enjoying the rest, but it sure is quiet.






Thanks again and we really hope you come back.

Tuesday, 27 March 2007

Part 3: A discussion on diving and air consumption: Positive buoyancy at the surface


This is a huge issue and should have been stressed time and again on your initial dive course. In my experience, over 30% of all qualified (and experienced) divers we take diving are slightly out of breath before they start their first dive, especially when they have not dived recently! Think what this will do for air consumption on the dive.

Why is this the case? They are paddling, don’t have enough air in their BCD’s, are uncomfortable with the surface conditions etc. Basically, they forgot to trust and use their equipment. It’s not only air consumption at stake here.

A large percentage of all diving incidents occur on the surface, mostly through over exertion. A good way to overcome this is to hang about on the surface. Let the dive boat pick someone else up first after a dive whilst you float around. Have enough air in your BCD to lie back and stop kicking completely. If there is a short swim to the dive site, it is often easier to do this a couple of metres under the water than at the surface – especially in choppy conditions.

Believe me; if you can avoid getting even slightly out of breath you will save masses of air.

Thursday, 22 March 2007

Rains helping cool Barrier Reef

Recent torrential rain and monsoons in northern Queensland have provided some rare relief for the Great Barrier Reef in Australia.

The poor conditions have significantly reduced ocean temperatures, making them the coolest for up to five years.

It has been a blessing for the corals - usually in the summer they are at risk of serious scorching and bleaching.

The Great Barrier Reef is the world's largest living organism, stretching over more than 345,000 sq km.

It is also the world's most protected marine area and has been under threat from a combination of global warming, pollution and over-fishing.


Read more at BBC

Tuesday, 13 March 2007

Tips for photographing Manta Rays


The Manta Ray dive site dive site visited from Matava Resort continues to amaze divers from novices to seasoned world travellers. Many have seen their first Manta's here and still have had their closest encounters. Despite having a 'dive of a lifetime' few however manage to come away with the 'shot of a lifetime'. Despite (or because of) their size, Mantas are a difficult subject - here are some tips to help capture that memorable image:-

1. You are going to need to be close. Mantas feed in plankton rich waters and cutting down the distance to you and your subject is essential. To achieve this you need to remain calm and still, perfect your buoyancy and certainly not chase your subject.


2. You have to have the right lens. Unless you want a close up of a Manta's eyeball, all that work in getting close will not pay off unless you have a wide angle lens (very wide). To get the best shots, you need to be able to fill the frame with a 5 metre Manta from about half that distance (15mm lens or less is ideal).


3. Practice composing your shots with a fixed subject before entering the water - also practice framing without the camera to your eye. Just reaching in front of you with your camera allows you to get a little closer without moving your bubbles closer. The aim is to fill the frame without cropping later on so you can maximise your image quality.


4. Consider shooting in natural light. Strobes often produce a 'stung' look from the Manta as they often flinch when a strobe fires. Our Mantas are generally at a depth of about 15 metres (45 - 50 feet). This is ideal for using something like a 'Magic Filter' which allows you to restore the natural colour balance of your photograph later on. You will of course also need to learn 'Photoshop' or equivalent as the filters work in conjunction with these programmes.


5. Take plenty of shots but don't forget to take in the Mantas beauty with your own eyes as well !

Friday, 2 March 2007

Asia-Pacific Coral Reef Program

Papua New Guinea, Fiji, and Indonesia : Asia-Pacific Coral Reef Program


Coral reefs of the Asia-Pacific region contain the most diverse concentrations of life on the planet. Indonesia and Papua New Guinea form two sides of the renowned diversity hotspot know as the “coral triangle,” while Fiji, diverse in its own right, is famous for its spectacularly colorful coral communities and array of endemic species. WCS operates a marine project in each of these countries, integrating ecological and socioeconomic research to provide novel approaches to conservation and management while meeting community needs.

The Human Aspect
The majority of coastal communities throughout Indonesia, PNG, and Fiji rely heavily upon marine resources for sustenance and income. With coastal populations rapidly expanding, and a move towards more modern, efficient and damaging fishing methods, many reefs in the Asia-Pacific region are facing threats of overexploitation and destruction. This in turn is affecting the livelihoods of the communities that are so heavily dependent upon the marine environment. Achieving marine conservation in the region requires finding a balance between conserving biological wealth and maintaining the livelihoods of the communities dependent upon the marine environments.

Threats
The most significant threats facing coral reefs in this region are overfishing, destructive fishing practices, and coral bleaching. The generally long life spans of targeted reef species, as well as the relatively low productivity of reef ecosystems, makes reef fishery stocks particularly susceptible to overfishing. Furthermore, a number of fishing methods commonly employed in the region, including dynamite and cyanide fishing and the use of monofilament nets, not only deplete fisheries stocks at an alarming rate, but also damage or destroy essential reef habitats. The bleaching of corals from elevated sea temperatures is also significantly changing reef habitats, and the long-term impacts of this phenomenon are still largely unknown.

WCS Activities
WCS uses an integrated natural and social science approach to identify which types of management are successful in maintaining or improving reef ecosystem condition and which socioeconomic factors are responsible for this success. So far, WCS has found that management systems that are most responsive to the needs and priorities of local communities achieve the best compliance with management regulations and subsequently achieve the greatest conservation success. WCS is now beginning to implement identified successful management strategies in receptive communities. In PNG and Fiji, existing systems of customary marine tenure (community ownership of reefs) will be used as an avenue to implement and enforce management strategies, while in Indonesia, alternative systems of management will be implemented and tested within the framework of national park zoning plans.

The long-term success of conservation strategies in the region will also rely heavily upon a strong local scientific staff to implement, monitor, and adapt management strategies. One of the major objectives of this program is to build the capacity of young local marine scientists to carry out research and monitoring within each country. WCS’ activities to achieve this objective include marine training courses, supervision of postgraduate projects, and one-on-one mentoring of interns working with the program. It is hoped that through these activities, WCS can build a strong local scientific contingent to continue conservation efforts in the Asia-Pacific region well into the future.

Important Next Steps

  • Continue to identify the most effective management strategies.
  • Develop optimal management strategies tailored to local social, cultural, and economic conditions.
  • Implement optimal management strategies in receptive communities as part of a locally managed marine area network.
  • Monitor, evaluate, and adapt management strategies to ensure their long-term effectiveness.
  • Train young scientists, conservation practitioners, and managers to be able to implement and adapt management strategies and to train others in marine research and monitoring techniques.