How best to look after our precious New Zealand waterways – a personal view by Laurel Teirney of Wanaka

A personal view by by Laurel Teirney, a former manager at Ministry of Fisheries

The success of the community based/scientist/agency approach we adopted for looking after the whole of the Fiordland, and then the Kaikoura Marine Areas makes me feel we’ve struck on a “magic” formula that just might apply to our lakes and rivers as well.

My passion, at the moment, is finding out if such an approach might work for lovely Lake Wanaka – because I have watched in dismay as numerous lakes and rivers have deteriorated in front of my eyes. So something about our current approach isn’t working for our waterways.

Lake wanaka by laurel teirney
Lake Wanaka photo Laurel Teirney

 

 

 

There are those who say a combined community/scientist/agency approach will not work for this lake catchment – but why not give it a go? After all, what have we got to lose? And surely our lake deserves every effort to keep it in the low nutrient, high water quality category into the future for all our sakes!

buff weka
Buff weka family feeding in Lake Wanaka shallows in 2008. This species which had become extinct were once common on the eastern South Island. They were reintroduced from the Chatham Islands onto Lake Wanaka’s Stevenson Island and nurtured in an aviary before releases on Te Pekekara and Waikatipu islands and to Mou Waho Island in Lake Wanaka, where they currently enjoy surprising picnicking visitors.

Obviously a healthy lake is paramount not only for the well-being of these very special birds, but other species as well, notably ourselves!

To me the fundamental principles of the approach to managing the Fiordland Marine Area are likely to be the same for lakes – indeed for any type of waterbody.

1] First, the approach is all inclusive – that is, tangata whenua and every “interest” is represented and everyone selects their own representatives.

Cray fishing boat in Preservation Inlet NZ
Fishing boat in Preservation Inlet, Fiordland, with a cargo of cray “pots” [actually cages – lowered near rocks and pulled up again after a few days]. This is financially a high stress job, and dangerous. Also it’s a very different use of the environment compared to recreational fishing, and tourism

2] Then, when the representatives are around the table the first task is to agree on a shared vision. At our first Fiordland meeting in December 1995 there was a palpable sense of unease around the table. But when we went around the table and each person said how they wanted to see the Fiordland Marine Area in 20 years’ time, the unease was replaced by outright surprise – because everyone wanted the same thing!

Diving in Preservation Inlet, Fiordland NZ
A recreational diver in Preservation Inlet, Fiordland NZ. 2015. Diving for photos only due to it being a Marine Reserve, and as mentioned below not much is known about this area e.g. the fresh water layer here, on top of the salt water was approx. 5 meters, and nobody seemed to be aware of this – elsewhere it’s typically 1-2 meters

3] From then on, the primary focus stayed with the Fiordland Marine Area, not the desires of any participating group.

Marine reserves 3
Dusky Sound, Fiordland

4] Given the isolation of Fiordland little had been documented about the marine area – so the priority was to gather together what was known. Following the shared vision at the first meeting a large map of Fiordland was laid on the floor. Each group was given different coloured dots and asked to place them on the map according to the locations they valued. Red rock lobster and purple paua dots appeared rapidly all along the coastline. But the blue recreational dots were slower in coming – as we all know rec fishers are a bit reluctant to share info about where they fish…..but when they considered what might happen if they didn’t show their dots they too were around the map and the shared observations and experiences filled the room. Only then did Stewart Bull of the Oraka/Aparima runanga, calmly walk up to the map and place a single yellow Ngai Tahu dot way out in the ocean. Silence fell and then some-one asked “Hey Stu what were you doing way out there?” And he calmly replied, “Oh just looking around”. And that set the tone for the rest of the process – lots of good humour and camaraderie.

Dusky Sound, Fiordland National Park, New Zealand
Good humour is often evident in Fiordland, especially on the rare sunny day! A pessimist in Dusky Sound, Fiordland does therefore standout – near where Capt. Cook anchored up in Pickersgill Harbour for a month, after a circumnavigation up to three quarters of Antarctica.

One other experience of community knowledge that has stayed with me was the identification of the lines defining the inner fiords from the outer coast. I’ll never forget Pete Young, a blue cod and rock lobster fisher, standing at the maps marking exactly where those lines should be with input and encouragement from the rest of us. It wasn’t until several years later that Steve Wing, our marine scientist, produced data that simply reinforced the lines Pete had drawn.

Long Sound, Fiordland
No place to be in a 4 meter alloy tender with serious white water wanting to drive the bow under, and we’re upstream of a large rock, with all but 5 mm of it submerged – the head of Long Sound in Preservation Inlet, Fiordland

5] And so to the roles of the community and agencies involved. These were complementary right from the start and best described by an “egg analogy”. The yolk represents the community – all passion, commitment and knowledge about their place. The white represents the agencies – all support, advice and management tools for putting the management decisions in place. And there has been an additional benefit as the agencies now work in teams for every issue they deal with.

To me, this approach harnesses all the knowledge, all the passion and all the energy that leads to innovative solutions for even the most difficult issues.
And ongoing motivation is assured by the delight and reward of being involved in looking after one’s own place.

So my “dream” is to see many more of our waterways, be they lakes, rivers or marine areas looked after in such a way. Top of FormAnd logically, extending this from the mountains to the sea (ki uta ki tai), whole catchments could be managed in such a way – though the logistics are rather mind blowing I have to admit!

In the meantime though, I’m just going to continue advocating for a Lake Wanaka Community Management Plan.

Wanaka water purity
The depth of water under the boat at Mou Waho Island on Lake Wanaka is deep enough to engender a sense of vertigo, it’s so clear. So “clear” that maybe we take it for granted!

Sunset - Dusky Sound, Fiordland
Sunset – Dusky Sound, Fiordland, New Zealand

Unless stated otherwise all photo credits are Southern Light

Are there more tūī in Wanaka, and other NZ towns?

Over the last few weeks a funny thing has been happening to me re. our New Zealand bird, the iconic tūī.

Perhaps because I’ve been able to spend sometime with a few and apart from taking the opportunity to capture the way light reflects from their stunning feather colours and texture, I’ve also used their speed and aggressiveness as they chase other tūī and other species away from food sources, to learn better ways to get my camera to focus faster and more accurately.

New Zealand Tui

And then as if by coincidence I started to learn via word-of-mouth and social media that they seem to be on the increase, especially in the Wanaka and nearby Lake Hawea areas.

Tui

Is this because of my own heightened awareness of the species, or are there simply more about? Could it be due to a healthy increase in the variety of native trees and shrubs providing a year-round food supply for them, along with a decrease in predators?

NZ Tui

They are an indicator species – a good sign of a successful habitat restoration programme.

Tūī are unique [endemic] to New Zealand belonging to the honeyeater family, feeding mostly on nectar from flowers of native plants such as kōwhai, puriri, rewarewa, kahikatea, pohutukawa, rātā and flax. Occasionally they will eat insects too.

If you feel inclined to leave comment here, please feel free to do so.

Or better yet, or as well as, go online and be a part of Landcare’s the NZ Garden Bird Survey 24 June – 2 July 2017

World’s rarest wading bird the kakī / black stilt gets new lease on life

Exciting News Today – kakī New Zealand’s black stilt, has been granted funds to help secure the population status of the worlds rarest wader.

Black Stilts

Juvenile kakī following release at Tasman Delta, Nov 2016 (Photo by Rachel Hufton)

Finally, the Twizel Recovery Centre can begin to increase its capacity for hatching, rearing chicks and releasing juveniles back into their iconic braided river habitat.

I will always remember being part of one of the releases of juvenile kakī on the Tasman Delta with the DOC Twizel team – one of those special moments, indeed. A project well deserving of international support.

Rachel Hufton


Global Wildlife Conservation Partners in Future of New Zealand’s Kakī ~ For immediate release June 22, 2017

kakī / black stilt
photo credit Kate-Lawrence

Global Wildlife Conservation today injected some additional hope into the once-uncertain future of the world’s rarest wading bird, a critically endangered species found only on the South Island of New Zealand. In recent years, the kakī, or black stilt, has begun rebounding from the brink of extinction thanks to the New Zealand Department of Conservation’s captive breeding and reintroduction program. Through a significant contribution to the program, GWC is helping ensure that kakī can one day thrive on their own in the wild.

Adult Kakī with New Zealand’s highest mountain, Aoraki/Mount Cook
Adult kakī with New Zealand’s highest mountain, Aoraki/Mount Cook, in the background. (Photo by Liz Brown)

New Zealand is a true conservation jewel, but there are ongoing declines of native species and habitats”, said GWC board chairman Brian Sheth, who is visiting with the Department of Conservation this week and whose philanthropic organization, Sangreal Foundation, provided funds for the project. “We are excited to partner with the forward-thinking and collaborative Department of Conservation, who innovatively partner with non-profits, Māori communities, businesses, and other stakeholders to preserve the country’s unique natural and cultural heritage. The critical conservation program in the Mackenzie Basin, including the recovery of the kakī, will be a model for the country.”

pair of Kakī adults in the Tasman Valley
A pair of kakī adults in the Tasman Valley. (Photo by Liz Brown)

Kakī were once widespread across… [Read More at the Source>>]

Juvenile Black Stilt
Juvenile kakī (Photo Rachel Hufton)

Source: World’s Rarest Wading Bird Gets New Lease on Life

Saving the critically threatened southern New Zealand dotterel

Rachel Hufton of Illuminate Ecology, reports following a cannon netting bird banding trip at Awarua Bay, Invercargill, an important wintering site for the South Island New Zealand dotterel. A Nationally Critical Threatened Species of conservation concern.

South Island Dotterel

above: South Island dotterel with South Island pied oystercatcher and a bar-tailed godwit at high tide roost site, Awarua Bay, Invercargill

The New Zealand dotterel is an endemic shorebird which was once widespread throughout NZ until the late 19th Century. Since then it has seriously declined in range and numbers and is now found in two distinct breeding populations. The two sub-species were first recognised in 1994; the North Island dotterel Charadrius obscurus aquilonius (Nationally Vulnerable) and the South Island Dotterel Charadrius obscurus obscurus (Nationally Critical).

The northern dotterel is more numerous, found on or near to the coast (mainly on the shores of the Eastern North Island). The southern dotterel was widespread but now only breeds on Stewart Island wintering here at the coast or at Awarua Bay in Invercargill (a popular wintering site for shorebirds) feeding on intertidal mudflats. It is generally a larger bird, with a heavier build than the northern dotterel and tends to be darker in colouration. Biometric measurements for bird (e.g. mid-toe) and egg are also different.

South Island Dotterel

 


South Island Dotterel

above: South Island dotterel Awarau Bay in breeding plumage and returning to basic plumage – Photography credit for both above Glenda Rees

The breeding habitat of the New Zealand dotterel is the most defining difference between the two sub-species. The North Island dotterel nests within an impression on beaches where as the South Island dotterel is more terrestrial nesting in the herb rich hills of Stewart Island, above the tree-line.

The population of South Island dotterel sub-species was at its lowest 25 years ago at 62 birds. Since then, considerable efforts targeting pest control have increased the population. The current population is now around 153 individuals. This is a decline from previous recovered population of 290 in 2009 as a result of a targeted cat (feral) control regime. This was however no longer solely effective and the population fell to 126 birds in 2016. The population appears to fluctuate and a slight increase is to be treated with caution as these birds are potentially at risk of extinction, especially in relation to further threats now identified by the NZ Dept. of Conservation (DOC) (highlighted below).

DOC Trail cameras installed at nest sites on Stewart Island have identified further threats to this critically vulnerable species such as the Australasian harrier, spur-wing plover and white-tailed deer, which have been observed taking eggs from nest sites. Accumulative threats have also resulted in a sex ratio imbalance, as males have been found to incubate eggs at night and therefore more susceptible to predation.

In light of historical population trends, DOC are now actively developing further conservation action planning for the South Island sub-species. This forms a ramp up on invasive predator control including new toxin targeted at cats, rat control, variety of kill traps and control of other predator species such as spur-winged plover. There will be active nest surveillance, cameras installed and field monitoring rangers. Further birds will also be colour banded to help monitor adult survival, abundance, site fidelity and to screen for disease such as avian malaria.

This work has started, and on 6 June 2017 additional South Island dotterels were captured at one of their wintering sites, Awarua Bay, Invercargill by a OSNZ cannon netting team working alongside DOC Invercargill. Below shows the cannon netting site set up where birds roost during high tide.

South Island Dotterel Cannon netting

above: Cannon netting site at Awarua Bay, Invercargill at low tide.

All birds (adults and juveniles) were colour banded, processed and screened to help provide a better understanding, aid monitoring and guide conservation management of this species. Colour bands provide a unique identification code and allow birds to be identified and monitored more easily in the field (*no birds were injured or harmed during cannon netting).

South Island Dotterel

above: Adult South Island dotterel with unique colour band identification. Note: wide bill, large eye and pale legs. High tide roost site in the background with bird observation optics

This article highlights the importance of species population monitoring to guide effective conservation management. With concentrated efforts in place from a broad alliance of conservationists, there is hope of saving this endemic New Zealand shorebird for future generations.

References
Images by Rachel Hufton and where stated Glenda Rees.

Carter, K (2017). Saving the Southern New Zealand Dotterel. Department of Conservation. Stewart Island. Presentation given at the OSNZ Conference Te Anau, June 2017.

Dowding, J, E (1994). Morphometrics and Ecology of the New Zealand Dotterel Charadrius obscurus with a description of a new sub-species. Notornis. Vol 1. Part 4.

http://nzbirdsonline.org.nz/species/new-zealand-dotterel

Today’s News: New Zealand native birds in a desperate situation, says Environment Commissioner

The takahē was once thought to be extinct, but in 1948 it was rediscovered by Dr. Geoffrey Orbell, [who incidentally I remember meeting as a child, when he was the next-door-neighbour of my grandparents]. He found it high in the tussock grasslands of the remote Murchison Mountains, Fiordland. Currently there are just over 300 left in the world - approx. half in the wild. photo Southern Light

takahe
The takahē was once thought to be extinct, but in 1948 it was rediscovered by Dr. Geoffrey Orbell, [who incidentally I remember meeting as a child, when he was the next-door-neighbour of my grandparents]. He found it high in the tussock grasslands of the remote Murchison Mountains, Fiordland. Currently there are just over 300 left in the world – approx. half in the wild. photo Southern Light
Today a very timely report was released by Parliamentary Commissioner for the environmentDr Jan Wright. It follows on from a very succinct series of non political reports including the use of 1080 poison to help our birds:

In a new report, the Parliamentary Commissioner for the Environment says New Zealand’s native birds are in a desperate situation.

“Despite the efforts of many, most of our native birds are in trouble.” said the Commissioner, Dr Jan Wright.
“A third are in danger of becoming extinct. This includes the kea – the only alpine parrot in the world. Another is the wrybill – the only bird in the world with a beak that curves to the side. And another is the whio – a duck that paddles through rough water like a white water kayaker.”

Wrybill
Wrybill in the Makarora braided riverbed, Mt Aspiring National Park. photo Southern Light

The Commissioner’s report is based on a vision of restoring abundant, diverse, and resilient birdlife on the New Zealand mainland.
Dr Wright says the Government’s aim of eradicating possums, rats, and stoats by 2050 is good because it focuses attention on the most pressing cause of the decline of native birds – predators. But she says a plan of action is urgently needed.

“We need sustained control of predators over more large areas, so that bigger populations of birds can thrive. Small isolated bird populations can become inbred. We must not let our birds drift to the shallow end of the gene pool”, said Dr Wright.
The Commissioner also stresses the need for action on feral cats.

“These bird killers now almost certainly number in the millions in the countryside and along forest margins.”
The last chapter of the report contains seven recommendations to the Government. They include high priority research on controlling predators, increased protection of important bird habitats, and investigating new sources of funding.

“Ninety-three of our bird species are found in no other country”, said Dr Wright. “We must look after them. Our birds need help not only in national parks, but on farms, along rivers and coasts, and in cities. This is a battle for all New Zealanders.”

Source: Native birds in desperate situation, says Environment Commissioner

The whole document “The report, Taonga of an island nation” is available here as a pdf >>