Climate Change, Acidification, & the Oceans, Marine Conservation & Sustainable Management, Ocean Ecosystems

What the GBRMPA chair DID NOT say about my coral bleaching article

In April 2016 I submitted an article to The Marine Professional – a publication of the Institute of Marine Engineering, Science & Technology (IMarEST) focusing on the mass bleaching event that had hit the Great Barrier Reef at the time.  In their September 2016 issue, The Marine Professional featured a comment from a reader, in which he stated that he shared the article with Dr. Russell Reichelt – chair of the Great Barrier Reef Marine Park Authority.  The reader alleged that  Dr Reichlet told him that the article “contains some accurate things mixed with half truths and alarmism”.

A number of  coral reef, marine biology, and climate scientists have been in touch to express their concern about Dr Reichelt’s alleged comments on my article.  After liaising with Dr Reichelt’s office*, I am pleased to be able to set the record straight on what he did – or rather did not say.

*I did contact Dr Reichelt directly, but he replied via his office not directly.

After corresponding with Dr Reichelt’s office to determine where the “half truths and alarmism” were in the article, I have been informed that, whilst Dr Reichelt recalls the article being brought to his attention, he never made any such comments about the article.  In fact, he hadn’t even seen the article to comment on in the first place.  He has since read the piece and agrees that it is factual.

I have not attempted to contact the reader to find outwhere his comment came from.

Below is a copy of the article I submitted to The Marine Professional.   For those who want to see the article after it has been through their editorial process, please see the June 2016 edition of The Marine Professional.

Continue reading “What the GBRMPA chair DID NOT say about my coral bleaching article”

Marine Conservation & Sustainable Management, Marine Life, PhD / Graduate School

Where the wild things roam: Dispersal, connectivity, marine protected areas, and my PhD project

 

In my last post I mentioned that I am starting a PhD.  I promised to tell you a little more about what my research will be looking at, so here we go!

The project outline

My research comes very broadly defined already – the work’s raison d’être if you like.  Here it is:

“Movement and dispersal connects marine populations, allowing restoration of depleted local populations by immigrants that renew genetic diversity. Although Canada’s Oceans Act prioritizes ‘linking Canada’s network of marine protected areas (MPA)’, connectivity has not weighed significantly in MPA network design in Canada. This study will optimize regional marine connectivity among protected areas in the Atlantic region by determining optimal locations for new MPAs and evaluating how commercially important species would be representative in the entire MPA network. To model species distribution based on larval dispersal, fishery pressure, and climate change, we will use 3-D ocean circulation models. Then, based on metapopulation theory, we will develop novel spatial network algorithms to optimise the number and spatial connectivity between MPAs under current and future scenarios of climate and fishery pressure that may alter larval supply”.

Sounds complex?  Yep, for me too. Continue reading “Where the wild things roam: Dispersal, connectivity, marine protected areas, and my PhD project”

Marine Conservation & Sustainable Management, Marine Life

A brighter future for the shy albatross

Predicting the future is a tricky business.  As then United States Secretary of Defence Donald Rumsfeld famously said “There are known knowns. These are things we know that we know. There are known unknowns. That is to say, there are things that we know we don’t know. But there are also unknown unknowns. There are things we don’t know we don’t know” .  Then there is the interactions between all the variables that determine the outcome of a particular event.  However, few things work in isolation and species decline often results from the accumulation of different stressors.  If we want to put in place conservation management measures that are effective in the long term, then we need to be able to put our known (and measurable) stressors together and figure out what, cumulatively they mean for our potentially at risk species.

The shy albatross (Thalassarche cauta) is an endemic to Australia, breeding on just three Tasmanian islands, including the aptly named Albatross Island.  The albatross of Albatross Island have a long history of human interest.  In the early 19th century adult albatross were extensively hunted for their feathers and egg, taking their numbers down from an estimated 11,100 pairs to just 400.  The population is now recovering, but still faces a number of possible threats.  High on this list are two issues – changing climatic conditions, and the accidental capture of the albatross in longline and trawl fisheries.  To understand just what the combined impact of these stressors could mean for this vulnerable bird, Robin Thomson and colleagues from CSIRO Marine and Atmospheric Research​​​, together with the Tasmanian Government Department of Primary Industries, Parks, Water and the Environment (DPIPWE) put together a model that can hopefully direct management to ensure these birds survive in the long term.

Continue reading “A brighter future for the shy albatross”

Climate Change, Acidification, & the Oceans, Fisheries, Aquaculture, & Sustainable Seafood

Climate Change Impacts on Kenya’s Fishery-dependent communities

 We now have a number of scientific studies that tell us how climate change is altering coral reef ecosystems, but how will these changes impact on communities that depend on them for their livelihood?  According to Joshua Cinner of James Cook University in Australia and colleagues from around the world, that answer depends more on the  community capacity for adaptation than its location.

Fishery-dependent communities in Kenya are not in a great situation.  Their reefs were heavily affected by a massive bleaching event in 1998 that has been linked to an extreme El Niño event and have not necessarily recovered as well as we might hope, and Kenyan reefs are likely to face increasing amounts of climate-related stress into the future.  Across three years, Cinner and co surveyed 15 ecological sites associated with 10 coastal communities along the Kenyan coast.  Using a range of ecological indicators of vulnerability of these reefs, they linked up the ‘health’ of the ecosystems with the vulnerability of the human communities that depend on them. Continue reading “Climate Change Impacts on Kenya’s Fishery-dependent communities”

Marine Life

With ever-warming waters, some European fish are on the move

We all have our favourite types of environment and weather.  Some love those warm, sunny days spent on a beach of golden sands.  Some love those rainy days in the forest, when everything glistens with the raindrops.  Some love nothing more than a cold crisp day in snowy mountains.  We humans are lucky.  We can not only survive but enjoy a wealth of different environmental conditions.  Many other species are not so adaptive.  In the oceans some creatures live in the seabed itself, others on top.  Some may stay in the water column dominated by a particular type of habitat like a kelp forest, whilst others roam into a variety of different locations throughout their lives.  Then there are the varying conditions of the ocean itself.  Some areas are generally calm whilst others may experience a lot of movement.  Salinity levels also vary, as does oxygen, as does temperature.  Actually temperature – as many a fisher will know – is a super important driver of species distribution.  There are a few reasons for this.  First, unlike us, most fish do not have the ability to control their own body temperature.  Their internal body temperature reflects that of the environment they are in.  The second primary reason relates to food.  If the major food of a fish – be it plant (phytoplankton) or animal – changes its abundance (how many) or its distribution (where it is), then the fish may follow. Continue reading “With ever-warming waters, some European fish are on the move”

Fisheries, Aquaculture, & Sustainable Seafood, Marine Conservation & Sustainable Management, What The Oceans Do For Us

Marine conservation and the human equation

People are as much a part of this planet as any other species.  We are ecosystem engineers, modifying and creating new environments to suit our needs.  We are incredibly adaptable, and our ability to make tools – both simple and technologically complex – has allowed us to prosper and rise above many of the restrictions that limit other species.  This doesn’t mean we can now act completely in isolation from the rest of the world.  Many of our activities have altered ecosystems in ways that mean they are less likely to meet our current and future needs.  Conservation efforts are attempting to remedy many of the problems we have created, but conservation isn’t just about nature – it’s about people too.

Nathan Bennett has been actively researching the links between the environment and human societies for many years.  His work takes a perspective that historically has often been forgotten in conservation management; what about humans.  This isn’t about developing opportunities of industry – it’s about conservation initiatives that look to sustain environment and communities together.  This week he has shared three of his papers on his blog – one from 2013 and two from this year.  Thanks to Nathan, all three are now open access…all three very much worth a read.  Here’s a brief overview of each paper to whet your appetite.

The trouble with marine protected areas
So here’s the deal.  We can find an area of the ocean that is becoming heavily degraded because of human activities.  To try to reduce the damage and allow recovery we can place a boundary around that area and place restrictions on the sorts of activities that take place inside.  But what of those people whose activities have been displaced?  We aren’t just talking about recreational fishers here.  In some circumstances, communities which are heavily dependent on the marine environment can be affected.  In this paper, Nathan and his colleague Phil Dearden surveyed coastal resource dependent communities living on the Andaman Coast of Thailand – an area which boasts 17 National Marine Parks.  The perspective of these people makes for grim reading.  They saw little benefit in the parks for their community, they felt that fishing and harvesting was negatively impacted by the parks, and they felt little incentive to support let alone participate in conservation efforts.  What needs to happen, writes Nathan and Phil, is for managers to start including socio-economic development considerations within protected area management planning.  This won’t just be better for the communities, but better for marine conservation.

It’s not just about how vulnerable you are, it’s what you can do to adapt
We’re back to the Andaman Coast of Thailand again, this time to consider their vulnerability and ability to adapt to climate change.  There are a whole host of different factors that can affect a community’s ability to adapt to climate change – and indeed any other sort of stressor.  Some of these are biophysical – climate change related impacts such as coral bleaching, or increasing number of storms, as well as environmental impacts such as marine pollution and overfishing.  Some of the factors are economic – like increasing costs of fuel, social – like increasing immigration, and some are related to governance, like corruption, policies, or illegal fishing.  Nathan and the team wanted to find out how communities felt about stressors.  They surveyed 237 households across 7 coastal communities to ascertain which of the 36 stressors identified in the region were considered having highest impact on the communities.  The results were a bit of a mixed bag, and despite the communities being just 10 km apart, differed between each community.  There were a few common factors though.  Many of the stressors were heavily intertwined.  Climate change impacts like more extreme storms and changes to rainfall were rated highly in the stress-rankings.  Economic factors – particularly rising costs – also came out as a major concern among all the communities.  Interestingly somewhat in contrast to the study above, marine protected areas were not really felt to be causing too much trouble.  What about overfishing?  Not a concern either… but then again the fish populations declined long ago, so overfishing isn’t really an immediate concern any more.  The thing about these sorts of stressors is that they aren’t really something that the community can deal with themselves.  They are part of wider regional and global problems.  From an adaptation perspective, this raises a number of issues.  There is not a ‘one adaptation plan to fit all’, but there are common factors that need to be looked at beyond the communities themselves.  Equally important, if we want to help communities to adapt, we cannot treat one stressor as separate from another.  A more integrated approach is vital for the success of any adaptation plan.

The eco-social economy:  How conservation can aid social and economic development
In this final paper the focus is turned to the Northwest Territories Canada and the Lutsel K’e Dene First Nation.  There have been plans afoot for their traditional territory…plans for a national park/protected area.  This is an old idea, and one that back in 1969 when the Government of Canada (Federal Government) tried to implement met with the opposition of the local people, who were successful in preventing the creation of a park.  In 2006, the First Nation and the Government of Canada signed a Memorandum of Understanding to look at implementing a park on those very same territories.  So what happened?  This new proposal has come from the local people themselves – a bottom up rather than top-down approach to conservation.  Through this collaborative process the park is taking an eco-social perspective to conservation.  Here, people aren’t just seen as the cause of degradation, but are seen as part of the ecosystem, impacted by the degradation.  The national park is not yet set up but is moving forward.  When it is, it is hoped that the park won’t just protect nature and the Lutsel K’e Dene First Nation culture, but work to meet social and economic development goals.

If you want to follow more of Nathan’s work head over to his blog http://nathanbennett.ca.  There is a follow option which will automatically update you of any new posts.  Now there’s some emails worth getting.

Image:  The Lutsel K’e Dene on  Great Slave Lake, Northwest Territories, Canada.  Credit:  Leslie Philipp/Flickr (CC BY 2.0)