Sustainable fisheries are the #1 supporter of marine ecosystems!

Sustainable fisheries are the #1 supporter of marine ecosystems!
This short article will describe how.
Written by: Jaimee Joiner

By 2050, it’s predicted that there will be around 2 billion people on this planet.

That’s a lot of people! And with more people comes more mouths to feed. The production of food to meet this growing population is problematic and seafood may have a huge role in tackling this issue. Not only is seafood nutritious and an environmentally efficient animal-based protein, but more and more people are starting to love and enjoy it.

Seafood production by wild marine fisheries has been increasing over the past 70 years. This increase has predicted the need to supply this growing population with yummy seafood as a readily accessible protein alternative. Although, fisheries must ensure that catch rates of wild fish are sustainable as the resilience of our marine ecosystems and coastal communities depend on sustainable fisheries!

So how are sustainable fisheries the #1 supporter of marine ecosystems?

Sustainable fisheries are those that regulate harvest rates to ensure fish populations stay happy and healthy. Government fishery agencies have a huge role in managing fish populations through stock assessments and ensuring legal limits are maintained.

Sustainable fisheries are the #1 supporter of marine ecosystems!

photo cred: Natalie Lobartolo

In short, fishery management strategies such as minimum legal size limits and spawning closures are reliant on adequate knowledge of species biology and ecology.

Whilst completing my Honours thesis at the University of Queensland, I have come to appreciate the importance of research and management. Primarily, it assists to regulate and ensure up-to-date knowledge of species. For the past year, I have been conducting research on pearl perch (a very tasty fish) and reviewing their management strategies across Queensland waters. It always surprises me how effective fishery management consistently starts with accurate scientific information about fish and fisheries.

Even if you live far away from a beach or a coastline, fisheries may still be an important part of your life! And everyone can do their part to ensure our fisheries stay sustainable.

Thinking about having seafood for dinner? Make sure you try and shop sustainably when it comes to your fish. ‘But how do you know if your seafood is sustainable?’ you ask. The best way is to check out GoodFish, Australia’s Sustainable Seafood Guide. Check it out here: https://goodfish.org.au/

 

Are you like me and enjoying making the most of a sunny day to fish for your own dinner? Make sure you adhere to state limits regarding fish size and seasonal restrictions. For more information on current catch limits within Queensland have a look at the government’s website: https://www.qld.gov.au/recreation/activities/boating-fishing/rec-fishing/rules/limits-tidal 

 

Here’s to keeping our fishies happy, well into the future!

Sustainable fisheries are the #1 supporter of marine ecosystems!

photo cred: Natalie Lobartolo

 

Wanna have more interesting reads about the importance of reef systems? And how you can help them from home, and travel with minimal impact? Visit our blog page for weekly updates!

Shifting the perspective on seagrass meadows

The ‘charisma’ gap – shifting the perspective on seagrass meadows

written by: Bennath Chillingworth

The ‘charisma’ gap – shifting the perspective on seagrass meadows

Photo cred, instagram: @an_bollenessor

 

Public concern can often drive for greater protection of marine habitats. However, public perceptions and
general awareness of seagrass meadows are lacking in comparison to other marine systems, and
they receive less attention in the media. Therefore, a lingering challenge for seagrass conservation is
public unfamiliarity. For example, the Great Barrier Reef World Heritage Area (GBRWHA) is famous
for its coral reefs, but a lesser-known fact is that the area also hosts one of the world’s largest
seagrass meadows!

Seagrass meadows have repeatedly been described as ‘uncharismatic’ compared to coastal habitats such as coral reefs, and it is thought that this might have implications for their protection.

Indeed, while coral reefs are often a point of attraction for many tourists, seagrasses are sometimes actively
removed as they seemingly disrupt the ‘pristine’ aesthetic of white sandy beaches and turquoise
waters.

While it is no bad thing that coral reefs receive so much attention (and rightly they should!) – I ask
myself, why is it that seagrasses might be perceived as ‘uncharismatic’ or ‘less worthy’ of protection
than the reef? The general personification of a marine ecosystem as ‘charismatic’ might seem rather
strange, but it made me question – What makes an ecosystem more or less charismatic than
another? In fact, what makes an ecosystem ‘charismatic’ at all?

The ‘charisma-gap’ simply highlights a disconnect between scientific information and the public, but more importantly, reflects the value of improving this communication to better inform people about seagrass ecosystems.

Photo cred: Natalie Lobartolo

Some ‘charismatic’ facts about seagrasses:

  • The presence of seagrass meadows increases habitat complexity and provides a source of food and shelter for other animals.
  •  Seagrasses support much higher biodiversity than unvegetated areas, attracting rare and beautiful marine creatures e.g., the Dugong (sea cow), green sea turtles, as well as endangered seahorses.
  • They slow down water movement, aiding in coastal protection.
  • Seagrass plays a crucial role in climate change mitigation through the long-term storage of carbon in their
    roots and sediments.
  • Support nursery grounds for baby fish and invertebrates, which seek refuge in seagrass meadows and go on to complete their adult lives on adjacent coral reefs.
  • Act as water filters by trapping harmful microbes and pollutants, preventing the spread of waterborne diseases.

Read more about why protecting seagrass is vital to building resilience to climate change.

Photo cred, instagram: ramonarobbinsreynolds

Photo cred: Benjamin L. Jones

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The ‘charisma’ gap – might be more important than we think, 

and shifting the perspective on seagrass meadows, could lead to positive change. 

A new seagrass discovery that made a lot of recent media headlines is – “The Largest Plant on Earth”
which has been found off the Western Australian coast in Shark Bay. Researchers had been trying to
estimate the number of plants that made up this meadow – and the answer? JUST ONE! Over the
last four millennia, a single seagrass seed has expanded 180km across Shark Bay, now covering an
area three times the size of Manhattan – officially crowned the world’s largest plant!

Why not share this fun fact with friends and family to help spread some seagrass charisma!

The ‘charisma’ gap – shifting the perspective on seagrass meadows

Photo cred, instagram: @michele_roux

 

Wanna have more interesting reads about the importance of reef systems, how you can help them from home, and how you can travel with minimal impact? Visit our blog page for weekly updates!

 

The ‘charisma’ gap – shifting the perspective on seagrass meadows

Another La Niña season ahead

Maybe you’ve heard the rumours about another wet and cold summer in Australia. Yes, the rumours are true, we have another La Nina season ahead.

The Bureau of Meteorology is warning for another wet summer for the eastern coast of Australia. We will experience a third La Niña season in a row.

So, what is La Niña, and El Niño? We better start with the covering the basics.

La Niña and El Niño are particular phases of the ENSO climate cycle.

Oh, hold on? What is the ENSO climate cycle?

El Niño-Southern Oscillation

The ENSO is the natural cycle of the temperatures, trade winds and clouds in the Pacific Ocean region. It’s one of Australia strongest climate drivers, meaning that these patterns influence our weather. There are 3 key phases in the ENSO cycle, neutral, La Niña & El Niño.

During the neutral phase, trade winds from the eastern pacific region blow across the tropical pacific from east to west. These winds pile up warm water in the western region which creates a process that pushes cold waters up to the surface in the east. The same process causing warmer temperatures to rise in the west and descending in the east, creating a huge cycle called the ‘Walker circulation’.

The neutral phase of ENSO Source: http://www.bom.gov.au/climate/enso/history/ln-2010-12/three-phases-of-ENSO.shtml

Another La Nina season ahead

The La Nina phase of ENSO Source: http://www.bom.gov.au/climate/enso/history/ln-2010-12/three-phases-of-ENSO.shtml

 

 

The neutral “normal” phase is the dominating phase and this is what we experience more than half of the time.

 

 

Another La Nina season ahead

Influences of La Nina in Australia. Source: http://www.bom.gov.au/climate/enso/images/La-Nina-in-Australia.pdf

La Niña is explained as the “cold phase” of the ENSO climate cycle. The trade winds blow more intense, which makes the Walker circulation stronger and in turn respond to the processes by creating a feedback loop. The enhanced trade winds are pushing the colder temperatures further west and cooling a greater part of the tropical pacific region. This process also helps to pile up warm surface waters in the western Pacific and to the north of Australia.

With higher ocean temperatures in the west, we experience an increase in evaporation which generate more clouds and a significant increase in rainfall.

Although, weather patterns are highly variable, and it’s difficult to predict what the conditions will be this season.  We cannot fully predict what the weather, and especially on a local level.

 

So, what are the potential impacts on the Reef for another La Niña ahead?

  • The cooler condition typically brings more clouds and rainfall. The clouds act as a shade and protects the corals from sun exposure and intense UV rays. In combination with cooler ocean temperatures, the conditions could reduce the Reef from heat stress and lessen the chance of bleaching events.
What we need to look out for…
  • Severe weather events.
    La Niña typically brings more cyclones in the northern eastern part of Australia. The damages on the Reef followed by a cyclone event could be significant and turn large areas into rubble.
  • Flooding events.
    The weather conditions on land can unfortunately have a negative impact the Reef. Flooding events typically brings an overload of pollutants from the water ways straight into the ocean bringing sediments, nutrients and pesticides which affects the water quality.

Coral reefs provides important ecosystem services (read more here) and it’s so important that we’re on the alert how it’s affected by external factors. In that way, we can determine what measures we can undertake to protect what we love the most.

Photo Cred: Natalie Lobartolo