Mostly just stuff I am doing to help the planet
I have asked Fisheries New Zealand for information regarding the proposed concession to allow commercial ring net fishing in two of the High Protection Areas in the Hauraki Gulf / Tīkapa Moana Marine Protection Bill. My understanding is that Ministers may need to debate the concession in the House before the information is available. So I have sent them an early impact analysis.
I asked Maritime NZ for the oil spill trajectory modelling from the wreck of the RMS Niagara. I have uploaded it here for anyone interested.
My layman’s notes below:
MNZ have kindly tried to explain it to me, but I don’t really understand why the 2016 modelling was only done with about 97 tonnes of oil (100 m³) when the Rena leaked 350 tonnes. The RMS Niagara could store more than 4,000 tonnes of oil and experts have estimated that there could be 1,400 tonnes remaining. This means the estimated volume of oil on individual beaches and the length of shoreline impacted could be dramatically worse.
The probability of oil contact with the shoreline increases by 10% if it happens in summer (This is tara iti / New Zealand fairy tern breeding season, we are down to nine breeding female left, note the Rena spill killed 2,000 birds). The impacts move a bit further south in winter.
It’s interesting to see the areas impacted. The spill expands outward from the wreck largely as you would expect, but there are interesting details. For example, it will be twice as bad at Goat Island than further up the coast at Mangawhai. If it’s going to be visible at the Mokohinau Islands in just a few hours, I think it might be a good idea to install a webcam there.
Harbours and bays are less impacted, but I wonder if this is an artefact of the modelling software. It definitely shows that even a 97-tonne spill will span a massive length of our coastline. For example, Waikato Regional Council also needs to be prepared.
I’d like a better understanding of the risk and the mentioned contingency plan. It would be helpful to run scenarios with different response times, gear, and methods; this may have already been done.
After finding a green sea turtle in Devonport and reading about leatherback sea turtle bycatch I decided to do some research on what was going on with turtles in New Zealand. I made a graphic summary.
Big thanks to Clinton Duffy for the review.
There is some confusion about the change in these numbers because of the way the data was reported. I made this graphic to also clear up that as of April 2024 there is no data that has been made public from the on-board cameras for commercial fishing vessels programme.
Data sources: Overview of the rollout of on-board cameras on commercial fishing vessels February 2024 Update at 1 April 2024: Progress on the rollout
This summer Tōrea pango / Variable Oystercatcher have nested for the first time at Tahuna Torea Nature Reserve (written records began in the 1970’s). Its also the first time any bird has nested on the man-made shorebird roosts (or islands) in the lagoon. Tōrea Pango are recovering from being threatened with extinction and are one of the most endangered breeding birds in the Eastern Songbird Project area. The nearest breeding area is Motukorea / Browns Island which is a population sink for the species. The reserves name ‘torea’ does not come from this species but the South Island Pied Oystercatcher which once gathered here in great numbers.
The two egg nest was laid days after I trimmed the vegetation on Kuaka Island mid November 2023 as part of a roost restoration project. A team of local bird watchers kept a close eye on the nest. The mud in the lagoon keeps the cats out, but not the rats, the trapping team stepped up efforts and rats stopped turning up on the trail camera. One of the eggs was not fertile but the other one was and the bird watching team was thrilled when a chick hatched just in time for Christmas.
The nest would not likely have survived a kiteboarding event in the lagoon. Thanks to the kiteboarders for volunteering to stop kiting in the lagoon at high tide. If you do see anyone kiting in the lagoon phone me 021 555 425 and I’ll have a chat to them.
It was interesting that after nesting on Kuaka Island where I had trimmed vegetation and where a small amount of mangroves have been removed (not the majority) the parents then took the chick 400 m southeast to Cable Beacon Point. New mangrove stumps here were used by the chick to hide. I put up a sign and the bird watchers were on high alert for a few weeks until the chick fledged. The Tōrea pango whanau have stayed in the area which is a great endorsement of the reserve from our feathered friends and a huge win for our shorebird habitat restoration efforts.
In New Zealand, we have 75 fish populations that are supposed to be managed sustainably. The main way we do this is by setting limits on how many fish can be caught, known as the Total Allowable Catch (TAC). We don’t keep regular track of the fish caught by recreational and cultural fishers. The only annual numbers are for commercial fishing, which has a limit called the Total Allowable Commercial Catch (TACC).
What’s puzzling is that for many fish populations, the TACC is set way higher than what’s actually being caught, and it’s been like that for years without any change. To me, this means these fish aren’t really being managed at all. Of the 75 in Aotearoa there are 16 fish populations in the Gulf that stand out as ‘unmanaged’ due to their TACC being significantly higher than the actual catches.
I had high hopes for the new Fisheries Management Plan for the Gulf, thinking it might sort out these unmanaged populations. I tried to get some answers by writing to the minister, and when that didn’t work, I filed an Official Information Act request. The reply came from Simon Lawrence at Fisheries New Zealand, but it wasn’t what I hoped for. They’re only planning to review four out of the 16 unmanaged populations this year – Flatfish, Rig, Blue cod, and Red cod. That leaves Pipi, Horse mussel, Paddle crab, Anchovy, Sprat, Pilchard, Jack mackerel, Pōrae, Leatherjacket, Trumpeter, Longfin eel and Spiny dogfish unmanaged. Four of these fish are at the bottom of the food web and are critical for the Gulf ecosystem function. Horse mussels are endemic (found only in New Zealand) and aggregations dense enough to be called beds are now extinct in the Gulf, Longfin eel are also endemic and going extinct.
So here we are, with a fisheries plan that talks a big game about moving towards an ‘ecosystem-based fisheries management‘ approach, but we’re not even effectively managing individual fish populations.
Like many locals I regularly ask people to not walk their dog at Tahuna Torea Nature Reserve. Sometimes dog walkers push back and say they are allowed to walk their dogs on the beach or around the top of the track. To make it clear here is the wording from the Auckland Council website:
Here is a map to visually explain the area.
To map the “beach and foreshore areas”, I projected the boundaries perpendicular to the starting points on land, down to the low tide line. Mean Low Water Springs (MLWS) has been visually estimated.
Update March 2024
Roberta Reserve also excludes dogs on the foreshore and playground. There is an exemption for the area in the water of the stream mouth seaward side of the bridge on Roberta Reserve.
It’s been a busy month with many submissions due.
Proposed Bottom Fishing Access Zones in the Hauraki Gulf Marine Park
I spent a few days going through the 7,550 submissions on protections proposed by Revitalising the Gulf. I’m estimating 77%-90% of the submissions were positive about the protection proposals. However huge numbers concerned about the continuation of bottom impact fishing outside the protected areas and cultural take inside them. So there is a general need for more protection. This level of public support for marine protection can be expected and can be seen in Polling from the Hauraki Gulf Form, Submissions on the recent Waiheke Marine Reserve Proposal and the Live Ocean Barometer 2023.
Most of the names were redacted from the submissions but the organisation names were left public. Here are the names of the organisations that made significant submissions.
| OPPOSED | PARTIALLY SUPPORT | SUPPORT |
| Legasea 2xs Charters / Balmain Boating Services Alan Seasprite Charters CRA 2 Rock Lobster Management Co Dr Hook Charters Fisheries Inshore NZ Kina Industry Council Mercury Bay Game Fishing Club NZ Rock Lobster Industry Council New Zealand Charter Boat Association New Zealand Sport Fishing Council Paua Industry Council Princess Carol Charters Provider Adventures Ltd Sea Urchin NZ Ltd Seahawk Fishing Charters Slipper Island Residents Association Snap Attack Specialty & Emerging Fisheries Group Tairua Adventures Ltd / Artisan Fishing Co Te Ohu Kaimoana Te Ra Charters The New Zealand Angling & Casting Association Whitianga / Coromandel Peninsula Commercial Fisherman’s Association |
Aldermen Islands Marine Reserve Group Friends of the Hauraki Gulf Mama Fish Sanford Limited |
Forest & Bird Revive Our Gulf Auckland City Centre Residents Group Auckland Conservation Board Auckland Council Auckland Sea Kayaks Auckland Sea Shuttles Coromandel Marine Farmers Association Devonport Yacht Club Environmental Defence Society Foundation North Friends of Taputeranga Marine Reserve Trust Goat Island Dive and Snorkel Good Fishing Hahei Residents and Ratepayers Association Leigh Penguin Project Live Ocean Foundation Meadowbank School Marine team Motuora Restoration Society Mountains to Sea Conservation Trust New Zealand Conservation Authority New Zealand Geographic New Zealand Marine Sciences Society Ngāti Hei Ngāti Manuhiri Settlement Trust Ocean Voyages Inc Pakiri Community Landcare Group Pest Free Kaipātiki Ports of Auckland Limited Shakespear Open Sanctuary Society Inc Sir Peter Blake MERC Stet Supporters of Tiritiri Matangi Te Whanau o Pākiri The Friends of Te Whanganui‐A‐Hei Marine Reserve Trust The Glass Bottom Boat Whitianga The Hauraki Gulf Conservation Trust The Hauturu Supporters Trust Tāmaki Estuary Protection Society Tāwharanui Open Sanctuary Society Inc Waiheke Marine Project Waikato Regional Council Wakatere Boating Club Yachting New Zealand |
| Most of these submitters were upset about continued bottom impact fishing in the Gulf. Most of the Charter fishers all sent in the same submission. | These submitters indicated support for marine protection but did not express that much support for the proposed measures: | Most of these submitters wanted more protection than what was proposed and also wanted bottom impact fishing banned. |
I have not published the names of many organisations who used the LegaSea form as those submissions contained dramatically less information than those from the above organisations. They were mostly small owner operator companies who are also keen fishers. The big Purse Sein operator Pelco NZ Ltd and Te Ahu wai o Tangaroa sustainable ecological aquaculture did make significant submissions but they did not speak to the protection proposal.
In response to the submissions the Department of Conservation has reduced the amount of protection. Submissions are now open on the Hauraki Gulf / Tīkapa Moana Marine Protection Bill.
P.S. These bottom impact fishing effort maps were made public by Fisheries Inshore NZ and are useful in considering the proposed ‘trawl corridoors’.
Over 10,000 submissions on the Hauraki Gulf Fisheries Management Plan are likely to be the largest data set of opinions on fisheries management in Aotearoa and definitely the largest in the Hauraki Gulf Marine Park.
This copy is displayed when asking for public submissions:
Submissions are public information
Note that all, part, or a summary of your submission may be published on this website. Most often this happens when we issue a document that reviews the submissions received.
People can also ask for copies of submissions under the Official Information Act 1982 (OIA). The OIA says we must make the content of submissions available unless we have good reason for withholding it. Those reasons are detailed in sections 6 and 9 of the OIA.
If you think there are grounds to withhold specific information from publication, make this clear in your submission or contact us. Reasons may include that it discloses commercially sensitive or personal information. However, any decision MPI makes to withhold details can be reviewed by the Ombudsman, who may direct us to release it.
I’m disappointed that Fisheries New Zealand has not released all the submissions citing section 18(f) of the OIA—that the information requested cannot be made available without substantial collation or research.
I’m going to read over the submissions provided (which are substantial) before asking for more detail.
