Tag Archives: marine

It’s EVERYWHERE: The true extent of microplastics

Image Credit: Oregon State University, CC BY-SA 2.0

Quantitative analysis of selected plastics in high-commercial-value Australian seafood by pyrolysis gas chromatography mass spectrometry (2020) Ribeiro et al., Environmental Science & Technology, https://doi.org/10.1021/acs.est.0c02337

The Crux

Plastic is one of those things that we hear about all the time these days. More specifically, we hear about how there is an absolute ton of it in the environment thanks to human negligence and the lack of concern that a large amount of people have for where their plastic goes when they are finished with it. Plastic isn’t like paper or metal, it takes a long, LONG time for it to break down. Plastic bags take anywhere from 10-20 years, but the normal time it takes for most plastic waste to decompose is about 1000 years. To put that into perspective, Leif Erikson led an expedition from Greenland to the coast of what is now North America in the year 1002. If his crew had some plastic with them and left it in the places they visited (typical tourists) there’s a good chance that it would STILL be there today.

I hope I’ve convinced you why plastic is bad, but another danger that plastics pose are microplastics, small bits of plastic that have come from a larger piece, all of which are less than 5mm in size. Our environment is full of them, and the ocean in particular has been saturated with microplastics. In 2014 a research expedition sailed from Bermuda to Iceland (a trip of 2500 miles/4023 km) and found microplastics in every single sample they took. And that was just plastic in the environmental samples they took, the real threat to marine life comes from what happens to all of that microplastic.

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Environmental Responsibility in the Tourism Industry With Professor David Lusseau

Image Credit: Pentapfel, Pixabay licence, Image Cropped

Fascination with nature drives a huge chunk of tourism worldwide. The plains of Africa, the Amazon Rainforest, the Swiss Alps and their associated species are huge economic drivers for their respective countries, and they (ideally) increase people’s appreciation of nature. There are plenty of great examples of ecotourism as a pathway for both education and conservation.

Yet when an industry is driven by money first, nature second, of course there are going to be manifold examples of businesses deprioritising the natural phenomena they are associated with, often to the direct detriment of that phenomena. Think the masses of pollution now found around Mt Everest, or the damage caused by avid snorkellers on the Great Barrier Reef. I’ve had my own experience with tourist companies deliberately spreading misinformation about the reef – more on that at this link.

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The Changing Face of Ecology: Part Five

Image Credit: rumpleteaser, CC BY 2.0, Image Cropped

2019 was a year in which many changes that our planet is experiencing came to the fore, capped off in December by the Australian bushfires, a phenomenon that scientists predicted would start to occur with increasing intensity at the beginning of last decade. With all the change that our planet is currently undergoing, it’s always worth noting that the discipline of ecology itself has changed as well.

Over 2019 we got to sit down and talk to some pretty exciting people. And whether they were at the forefront of genomics, the science-policy interface, or the wave of inclusivity currently sweeping ecology, they all had some great comments on how ecology has changed over the last few decades.

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Abigail McQuatters-Gollop: How Will Brexit Affect Europe’s Oceans?

Image Credit: Abigail McQuatters-Gollop, CC BY 2.0, Image Cropped

For the past three and a half years, the UK has been trawled through the political benthic sludge that is Brexit. With a second general election in two years arriving this Thursday, some sort of resolution finally seems to be on the horizon. And while much of the public discourse has focussed on the potential implications for Brexit following the election, climate change and the environment have also featured heavily.

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Nancy Knowlton: The Importance of Earth Optimism

Whilst it might seem like little guys like this don’t have much to smile about these days, being optimistic about the state of the environment is more important than ever, according to Nancy Knowlton (Image Credit: Rosalyn Davis, CC BY-NC-SA 2.0, Image Cropped)

At the very beginning of my PhD, I was in the audience at the STARMUS Festival when American reef biologist Nancy Knowlton gave a talk about Earth Optimism. It came just after the American President had withdrawn his support for the Paris climate agreement, and smiles regarding the state of the planet were hard to come by. So seeing an esteemed member of the scientific community give a reminder that there was hope for one of the earth’s most vulnerable ecosystem was inspiring.

At this year’s International Barcode of Life Conference in Trondheim, I had the chance to sit down with Nancy and talk about why optimism is so important in the face of the many ongoing problems that the planet faces.

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Are ecolabels greenwashing your farmed salmon?

Salmon aquaculture nets near Hitra, Norway. (Image credit: Peter Anthony Frank, NTNU, CC BY 2.0)

The Norwegian Aquaculture Review Council is an academic collective comprised of NTNU students Danielle Hallé, Myranda O’Shea, Bastian Poppe, Emmanual Eicholz and Peter Anthony Frank.

With so much attention on climate change and biodiversity in the media today, it is hard not to be skeptical as to whether companies are taking advantage of these paradigms for their own profit by “greenwashing” their products. Greenwashing is the common term for the practice whereby an organization presents information that gives them an air of environmental responsibility but makes no real contribution to reducing the impacts of threats like climate change, pollution, loss of biodiversity.

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Fishers and Fish Science: The Australian Fish Scientist Perspective

Fishing is an important part of Australian society. So is communication between fish scientists and fishers strong enough?

Fishing is an important part of Australian society. So is communication between fish scientists and fishers strong enough? (Image Credit: State Library of Queensland, Image Cropped)

Last Thursday, I posted an article on the need for more contact communication the fish scientist community and the fishing community, which you can find here. It gives a breakdown of why better communication between the two groups is mutually beneficial, and how it could be improved. The piece was written after talks with a number of prominent Australian fish biologists, whose thoughts I’ve shared in more detail below.

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Gretta Pecl: Climate Change in Coastal Waters

Gretta Pecl, founder of the Redmap project, which aims to demonstrate tangible effects of climate change to Australia's fishing community

Image Credit: Gretta Pecl, University of Tasmania, CC BY 2.0

So often the effects of climate change are somewhat intangible to us; the weather may grow warmer, but it’s a slow and gradual process, which can seem entirely at odds with the alarm bells that things like the IPCC report seem to be constantly clanging. As such, demonstrating tangible environmental changes to a community whose livelihood may depend on such changes is a great weapon in the fight against the effects of a warming climate.

With this in mind, marine biologist Gretta Pecl founded the Range Extension Database and Mapping project, also known as Redmap. Redmap aggregates public sightings of fish to show shifts in the distributions of Australia’s marine species, including some that are crucial to our fishers. At the recent ASFB 2018 conference, I sat down with Gretta to talk about changes in marine species distributions, how they’ll affect Australia, and how they might help the public understand the effects of climate change.

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Refining Nemo: Musings from the Australian Society of Fish Biology Conference

The Australian Society of Fish Biology's 2018 Conference delivered some of the most engaging, intriguing talks I've had the pleasure of witnessing

Image Credit: Sam Perrin, CC BY-SA 2.0, Image Cropped

As a fish ecologist living in Norway, it’s a joy to be able to travel to Melbourne and interact with the people that are driving forward fish science in my home country. So when I found out that the Australian Society of Fish Biology’s annual conference was taking place 3 days after my first flight home since 2016, I knew it was an opportunity I couldn’t pass up.

We’re on the last day of the conference at the moment, and over the next 2 months I’m looking forward to bringing you a number of insights, including interviews with guest speakers Eva Plaganyi and Gretta Pecl and pioneers of intriguing projects like Peter Unmack and Jarod Lyon. I’ll also have a fish edition of The Changing Face of Ecology, and some articles on how the angling community and the fish science community interact in a country with one of the most unique fish assemblages in the world.

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The Pacific Oyster

The Pacific oyster could make its way further north as the Arctic and sub-Arctic regions warm

Image Credit: Hans, Pixabay licence, Image Cropped

Last Monday, I wrote about how climate change can facilitate the spread of non-native and invasive species. Today, we look at a species that whilst problematic now, could spread further throughout Norwegian waters as temperatures rise.

The last time we looked at an ocean-dweller in this series, we saw that while some species may not be great for ecosystems, they can provide an obvious benefit to other aspects of the region, in this case the fishing industry. The Pacific oyster (Crassostrea gigas) was also introduced intentionally for cultivation and is now on the verge of becoming a major problem in Norwegian waters.

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