No toxic algal blooms detected yet despite warmer West Coast sea
By local democracy reporter Brendon McMahon
No toxic algal blooms have been detected in shellfish off the West Coast this summer, despite the warmer ocean temperatures caused by the marine heatwave.
Long stretches of the northern West Coast shoreline were closed to shellfish gathering for much of the first half of the 2000s due to periodic algal blooms.
MetService has said surface temperatures may reach 6C higher
than normal off the West Coast this
week.
However, algal blooms have not been detected off the West Coast for about five years.
Staff at both the West Coast Regional Council and West Coast Community and Public Health said regular testing was now being conducted via MPI.
"There's no issue at this stage but they are investigating," West Coast Regional Council science team leader Jonny Horrix said.
"I guess the assumption is no news is good news."
They would act on any adverse test results showing danger to human health from consuming affected shellfish.
New Zealand Food Safety deputy director-general Vincent Arbuckle said they currently had two regular shellfish sampling sites on the West Coast — both linked to popular gathering spots.
This was where mussels were collected and tested for toxins resulting from algal blooms.
"Cape Foulwind and Twelve Mile Beach have been in operation for some time and were chosen due to their location and popularity for shellfish gathering along this stretch of coast," he said.
Testing is done fortnightly all year round and the mussels are analysed for diarrhetic shellfish toxins and paralytic shellfish toxins.
"There have been no elevated test results recently."
Arbuckle said should toxins be detected above the regulatory limit, NZ Food Safety would issue a public health warning, advising against the gathering of shellfish in the relevant area.
"Warning signs will also be erected along the affected coastline."
* Public interest journalism funded through NZ On Air
Live Q&A: Garden maintenance with Crewcut
This Wednesday, we're having another Neighbourly Q&A session. This time with John Bracewell from Crewcut.
John Bracewell, former Black Caps coach turned Franchisee Development Manager and currently the face of Crewcut’s #Movember campaign, knows a thing or two about keeping the grass looking sharp—whether it’s on a cricket pitch or in your backyard!
As a seasoned Crewcut franchisee, John is excited to answer your lawn and gardening questions. After years of perfecting the greens on the field, he's ready to share tips on how to knock your garden out of the park. Let's just say he’s as passionate about lush lawns as he is about a good game of cricket!
John is happy to answer questions about lawn mowing, tree/hedge trimming, tidying your garden, ride on mowing, you name it! He'll be online on Wednesday, 27th of November to answer them all.
Share your question below now ⬇️
Poll: When should the tree go up? 🎄
From what we've heard, some Christmas trees are already being assembled and decorated.
What are your thoughts on the best time to get your Christmas tree up?
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4.7% Second half of November
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43.6% 1st December
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17.5% A week before Christmas
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33.1% Whenever you wish
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1.1% Other - I'll share below
What's your favourite tomato recipe?
Kia ora neighbours. We know your tomato plants are still growing, but we're looking ahead to the harvest already! If you've got a family recipe for tomatoes, we'd love to see it and maybe publish it in our magazine to share with our readers. Send your recipe to mailbox@nzgardener.co.nz, and if we use it in the mag, you will receive a free copy of our February 2025 issue.
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