Sunday, February 26, 2012

Save the Pawikan!

     In our last post, we talked about our trip to the PCC and about sea turtles, or in Filipino, pawikan. Sadly, these lovable creatures are slowly decreasing in number, and do you know who's causing this decline? MAN. Yes, WE. ARE. RESPONSIBLE.

     Now, you may think, "What's the big deal? They're just sea turtles anyway. And besides, what have they ever done for us?" True, these small creatures may seem unimportant, but to other organisms of the marine ecosystem, these sea turtles do a mighty lot.

     For example, green sea turtles eat sea grass. Sea grass has to be kept short in order for it to remain healthy. A number of marine organisms depend on sea grass beds because it is used for developmental and breeding grounds. Without green sea turtles, sea grass beds would become less healthy, meaning less and less breeding grounds for other marine wildlife - ergo, less and less marine wildlife altogether!

Green sea turtles munching on seagrass

     Some of us may not know we are causing harm to these turtles - but that's only because most of us do it indirectly. How, you may wonder? Through global warming. Global warming is the thinning of the ozone layer. Global warming is one of the reasons why we have very unpredictable weather. When the ozone layer thins, ice caps also melt. When they melt, they'd turn into water, which could result in overflowing and floods.

     And why are we responsible for global warming? It's the little things we do -- littering, riding smoke-belching cars, smoking and many other activities contribute to the slow destruction of our world.

     And how about our poor little pawikan? When people litter on beaches, sea turtles lose more and more of their initial grounds for laying eggs. Thus, they cannot breed anymore, and the population of sea turtles slowly decreases. But how about the ones living in the ocean already, all grown up? Well, due to the effects of cyanide and dynamite fishing, these poor animals no longer have a home. Furthermore, other big fish like sharks lose their initial food source. What do they end up eating?  Sea turtles! Don't you feel at least a little pang of guilt from this?

     As students, we may not be able to make radical global changes, yet we can certainly do our share in protecting our sea turtles. After all, to complete a puzzle, even the smallest piece matters. One thing we can do, for instance, is refrain from littering near the beach. Sea turtles, who eat jellyfish, might mistake the plastic we throw into the water for a jellyfish. Plastic, when swallowed, cannot be digested, eventually killing the turtle. Another valuable action is to report anyone abusing these animals. If you find a pawikan, you can bring it to the conservation center or set it free as well. Do not keep sea turtles as pets. If you know anyone who sells sea turtles, report them to:
Bantay Pawikan Inc.
Nida: +63.928.7185721 / Manolo: +63.906.6155546 
bantay_pawikan@yahoo.com
     However, the most important thing one can do to save the pawikan? SPREAD THE WORD! Let everyone know about the importance of keeping these sea turtles alive, be it through personal encounters or through the Internet (like now!). Encourage people to take part in saving sea turtles! Remember, it all starts with YOU.


Thursday, February 23, 2012

"Just keep swimming, swimming, swimming..."

     Oh, how time flies! In just a few weeks, we will leave our second home, The Learning Tree. BUT, our teachers promised that these last few weeks would be filled with fun and excitement. And wow, have they been making good on that promise!

Source
     A few weeks ago, our whole batch embarked on a field trip to the Pawikan Conservation Center (PCC) in Morong, Bataan. Pawikan is the Filipino word for sea turtle, a reptile that lives in a marine environment. Unlike their relatives, the regular turtles or pagong, pawikans have flippers that are long and quite paddle-like, making it easy for them to swim in water, but also makes it harder for them to walk on land. 

     The field trip's goal was to promote environmental awareness of marine life -- sea turtles are an endangered species and if their number continues to decline, it would disrupt the peaceful balance of the marine ecosystem. We joined the field trip because we knew it was going to be a unique learning experience. We were also certain that this trip would be one that we would fondly remember, especially because we were going to release hatchlings! Yes, female sea turtles lay their eggs on land.

     We expected to discover loads of new knowledge about sea turtles on this trip; the buzz of excitement didn't die down as we neared our destination. On the contrary, the grins on our faces seemed to grow wider and wider with each passing minute, regardless of how tired everyone felt for getting up earlier than usual.

    There were lots to see, lots to learn. Sitting in the bus, we expected to get a lecture about pawikans - about their habitats, their importance, and general information about their lives. In short, we expected to have a deeper understanding of pawikans after this trip. Perhaps they hid an ancient secret that would hold the key to life and the future? Nah.

    As we arrived at the PCC, we were awestruck by the beauty of the far-stretching beach with relatively clean water. The center itself was like a warm beach house, with lots of posters and sayings about pawikans on the walls. As expected, our visit there began with a short lecture about the sea turtle's natural habitat, life cycle and the steady decline in population, which is mainly caused by... man. Yes, WE ARE RESPONSIBLE FOR THEIR DECREASING NUMBER.

Life cycle of a sea turtle
Source
     After the short briefing, we were given the hatchlings we had paid for -- to "adopt" and release into the sea, to let them live their own lives. They squirmed in our hands so much, it was a miracle these li'l munchkins didn't try to jump into the water. When we were told to let go, we couldn't help but treat it like a race; there was a lot of shouting and hollering of, "HA! Mine reached the water first!" Aww, they left home so soon!

     The species of hatchlings we released, by the way, was Olive Ridley, or, in scientific terms, Lepidochelys olivacea. The Olive Ridley is also known as the Pacific Ridley, and sea turtles of this species are usually found in coastal bays.

  The taxonomic classification of Olive Ridley turtles is as follows:

Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Testudines
Family: Cheloniidae
Genus: Lepidochelys
Species: L. olivacea

     The Olive Ridley is a small sea turtle, with an adult carpace length averaging 60 to 70 cm. According to Wikipedia, Olive Ridleys are unique because "they can have a variable and asymmetrical lateral scute count ranging from five to nine plates on each side, with six to eight being most commonly observed." They were the most common species in the center, and their size and color made them the cutest sea turtles around!

Source
     Due to the lack of historical information, some of the past ecological functions of sea turtles have been forgotten. This is because sea turtles are not in abundance as they used to be, and this affects their productivity in nature. Although we cannot fully understand their roles hundreds of years ago, it is important to discover these as much as possible to help us determine their roles in the marine ecosystem thereby giving us a chance to save them. If we find out about the conditions they lived in centuries ago, we could help them increase their population. 

     What we do know about sea turtles is that they have a great impact on ocean ecosystems because they help maintain healthy sea grass beds and coral reefs, keep balance in marine food-webs, and facilitate nutrient recycling from water to land even at diminished population levels.

     Leatherbacks are the largest species of sea turtles in the world, and do you know where they get their energy from? Jellyfish! The average leatherback eats at least 440 pounds of jellyfish a day (nearly the weight of an adult lion)! Leatherbacks play a crucial role in the ecosystem as jellyfish predators. If the jellyfish population is left unchecked, it would prey upon the other fishes and tilt the balance in the ecosystem.

     In addition to their role in the food chain, an item in New World Encyclopedia says that sea turtles play key roles in two ecosystems that are critical to them as well as to humans: the oceans and beaches/dunes. If sea turtles were to become extinct, the negative impact on beaches and oceans would be significant.

     In the oceans, for example, sea turtles, especially the green variety, are one of the very few creatures that eat a type of vegetation called sea grass that grows on the sea floor. Sea grass must be kept short to remain healthy, and beds of healthy sea grass are essential breeding and development areas for many species of fish and other marine life. A decline or loss of sea grass beds would mean a loss of the marine species that directly depend on the beds, which would trigger a chain reaction and negatively impact marine and human life. When one part of an ecosystem is destroyed, the other parts will follow.

     Here's a piece of trivia: did you know that Crush, the 150-year-old sea turtle from "Finding Nemo", is a green turtle? Totally righteous!

     If you think that's all we've learned about these sea turtles, think again! Next week, we'll tell you more about these small lovable creatures. Excited? We know we are!

     And with this friendly reminder:
... we say goodbye for now!

Cheers!


* The title is a reference to the beloved Pixar movie "Finding Nemo", a classic that includes two sea turtles - Crush and his son Squirt.

Sunday, February 19, 2012

"Don't Know Why You Say Goodbye, I Say Hello!"

Hello everybody! I am the Dragon Writer, one of the administrators of this blog along with Dante, Kelly, Mikayla and Nero.  We live in the Philippines and are all in 6th Grade. This blog is part of our Science Project at The Learning Tree... so, here we are!

"Burning Wood" symbolizes our theme for Science Week this year: GREENenewable Energy: Our Future. Wood fuel is one of the most commonly used sources of energy around the world, but we believe that, as responsible citizens of this planet, we should be on the lookout for alternative sources of energy.

In short, we need to start "taking care of tomorrow, today".

Now, before I go any further, my fellow writers and I would like to formally introduce ourselves!

Dante



"I am Dante. I'm a student at the Learning Tree, here in the Philippines. I enjoy expressing my thoughts, opinions, and ideas hence the reason I joined this blog. I'm interested in punk music such as Joy Division. My favorite subjects would be those involving the use of language. I enjoy writing poems, and keep a notebook of my own. I am part of the graduating class, 6th grade, of our school."

Kelly


"Hello! My name is Kelly! I'm a girl who loves to sing and dance. Some of my favourite artists include Justin Bieber and One Direction, though there are many more. I enjoy spending time with my friends, whether it be eating together, studying, or strumming chords on the guitar and singing at the top of our lungs."

Mikayla

"The name's Mikayla. I'm blunt and sarcastic and believe in the saying 'carpe diem' - meaning, to live everyday like it's my last. I like reading and I'm a pretty decent musician, with an interest in artists like The Beatles, Pink Floyd, Regina Spektor and The Maine, among others. I get inspiration from Team Starkid, because of their amazing songs and performers. I also like eating (who doesn't?) and jamming with my friends, as well as writing songs WITH and ABOUT the people I love."

Nero


"Nero's the name. As a proud gamer, I play and enjoy games such as Minecraft and Skyrim, among others. I also love playing guitar and talking to some of my good pals, like the co-writers of this blog. I am a huge fan of George Harrison - not only was he a fantastic guitarist, but his songs were expressive and very poetic. I aspire to be like him, when I grow up."

The Dragon Writer

"I am The Dragon. As a curious person, I like to explore the world. I like going to different places and discovering the beauty of nature. I like to immerse myself in a wide range of talents which include singing, playing the guitar, writing and many more. One of the things that I'm really, really bad at, though, is art. I love to read and hang out with my friends. I also love music, some of my favorites being The Beatles, Oasis, Coldplay and Jason Mraz. I am an avid book reader and enjoy good literature"

We are incredibly thrilled to start this blog! The Urban Guru says we need to update this every week. We all hope that you enjoy our posts.

Here's hoping that we evolve and become great writers through this experience with you, dear reader.

Excited doesn't even cover how we're feeling now!

Until the next post! Cheers!


Sources for photos:
http://www.graphicshunt.com/wallpapers/anime/images/dante_the_gun_slinger_-_anime-7978.htm
http://i1.cdnds.net/10/41/reality_x_factor_1direction.jpg
http://pettyartist.deviantart.com/gallery/31769103#/d2h72dg
http://images.wikia.com/devilmaycry/images/d/d6/Nero0.jpg
http://www.bing.com/images/search?q=Fire+Dragon&view=detail&id=27CB6A53A5D9EA855FDE47B1E54E6CAB85BD6F47&first=91&FORM=IDFRIR


Source : http://en.wikipedia.org/wiki/Wood_fuel


* the title is part of a song entitled "Hello Goodbye", by The Beatles, whom we all love.