The importance of the oceans, their wildlife and ecosystems
The land and oceans are part of one system: Earth. So when we ask, why are the oceans important? We’re asking about our own future. Life began in the ocean billions of years before the first plants or animals colonised land. Oceans regulate the state of our atmosphere because they are 99 per cent of the volume of living space for animals and wildlife is the mechanism that drives stability.
Climate change has always been the symptom of biodiversity loss … that’s to say, the breakdown of the complex connectivity between lifeforms that allows Earth to flex in response to changing conditions. Ocean wildlife has, for the large part, acted as a buffer against the most catastrophic effects and since about fifty million years ago, has kept our climate quite stable.
Industrial fishing only happened recently in our planet’s history and this reduction in the abundance of wildlife represents our greatest challenge for survival.
Below you will find a range of articles designed to inspire an understanding of the magnitude of animal impact on our oceans.
The importance of whales and dolphins in our oceans
What’s more important, the ocean or the land?
The importance we bestow on the land is anthropocentric because we live there. It’s naturally important to us that we protect it. Nonetheless, if life in the ocean dies, we suffer irreversible changes to land-based ecosystems and climate.
In this article, we take a look at many of the ways that land and oceans are linked together.
The answer to the question, ‘why are the oceans important’, is that we live on the land but the oceans regulate Earth’s temperature. The oceans are equally vital to the land we live on.
Seabirds
Animals don’t compete with humans and successful animals don’t compete with each other. Competition theory may be one of ecology’s failures. It’s not that it’s …
Sharks and Rays
The fossil tooth fairy was smiling upon me today. After a snorkel we headed to bayside Melbourne to search for fossils. Soon after, I turned …
Latest posts about why the oceans are important
The necklace of remote Cook Islands landforms is a renowned safe haven for yachties and a sanctuary for 100,000 seabirds birds. But the islets became overrun by unwanted guests. This story is about rat eradication in the Cook Islands. It’s not just about the birds, it’s also a way for saving seabirds and island culture.
Across Polynesia, Pacific, brown and black rats brought in by vessels over the past 200 years have driven more bird species to extinction than in any other region in the world.
Suwarrow has become a slaughter site for tens of thousands of chicks.
Introduced mammals are responsible for 90 per cent of extinctions in the Pacific since 1800 and remain the key cause of decline for 90 percent of the region’s 200 threatened birds.
Nick Hayward (Wildiaries) was invited to film an expedition led by BirdLife International and their partner Te Ipukarea Society to eradicate Suwarrow’s rats forever.
Cook Island rat eradication: expedition overview
It wasn’t it all plain sailing.
Their geriatric vessel the Southern Cross is best described as rickety, the deck timbers groaning constantly with the weight of fuel. The first mate had a penchant for hanging around in his underpants.
Sleeping below decks on hot nights was akin to being a TV dinner.
The crew was, according to Nick, like a family. Everyone got on very well, particularly living in such close quarters for six weeks.
Suwarrow’s accommodation seemed a four star improvement from the Southern Cross’ cramped conditions with a little house and lots of freshwater for bucket showers and sanitation.
The atoll’s beauty was stunningly apparent but harsh. A debilitating heat and white glare were challenges for the cameraman and the rat hunters. The motus (islets) were surrounded by very jagged hard coral. Every cut required immediate attention lest you develop a “bloody huge tropical sore”.
Victuals were simple – canned corned beef, tins of spaghetti, rice – but barbequed fresh yellowfin tuna was a culinary delight.
The vaka (a traditional voyaging vessel) was beautifully built, extremely seaworthy and navigated by the stars. But it was rough going for someone unused to sleeping in a wooden hull above the hard slapping waves of nighttime Pacific sailing.
Then the much-awaited five day journey homeward turned into seven. The vaka can only sail with the direction of the wind which meant they found themselves 40 nautical miles from Rarotonga but unable to sail home. The next time they tacked they were 170 nautical miles from their destination.
Nick recalls a profound reverse cultural shock upon returning to privacy, modern amenities and autumnal Melbourne.
“It was an extraordinary journey. To be involved directly in something that has a clear and immediate conservationWhy is animal conservation important? Animal conservation is important, because animals are the only mechanism to create biodiversity, which is the mechanism that creates a habitable planet for humans. Without animals, the energy from today’s plants (algae, trees, flowers etc) will eventually reach the atmosphere and ocean, much of it as carbon. The quantity of this plant-based waste is so More benefit – a result – was a great experience,” he says.
Spotlight
The team had to go back again in 2018, revealing how hard and labour-intensive this work is. https://www.cookislandsnews.com/environment/suwarrow-is-for-the-birds/ .
Read the full blog from the second expedition here: https://www.birdlife.org/news/tag/suwarrow-blog
