Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search

 


Cockles Coming Back in Pauatahanui Inlet

Cockles Coming Back in Pauatahanui Inlet


The health of Pauatahanui Inlet is being restored, judging by the big increase in cockle numbers recorded in the latest survey by the Guardians of Pauatahanui Inlet (GOPI).

Cockle numbers are up 21% from 277 million to 336 million since the last survey in 2010 and have grown a massive 87% since 1995.

The Cockle Survey has been undertaken by GOPI every three years since 1992 and is analysed by National Institute of Water and Atmospheric Research (NIWA). GOPI will be reporting on the findings at its AGM tonight.

This 8th survey of the cockle population in the Pauatahanui Inlet arm of Porirua Harbour was carried out in December 2013.

Volunteers assisting GOPI came from Ngati Toa Rangatira, Greater Wellington Regional Council, Porirua City Council, Massey University, Conservation Volunteers and local residents.

The NIWA report on the survey confirmed our gut feeling on the day we carried out the survey that the number of cockles was larger than in any of our previous surveys, says GOPI Chairperson Tony Shaw.

“This is good for the cockles, but must also be an indication that the general ecological health of the Inlet is improving.”

He says a significant effort is going in to reducing contaminants and sediments entering the harbour, particularly with the implementation of the Porirua Harbour and Catchment Strategy and Action Plan on-going since 2012.

"The actions taken by Greater Wellington Regional Council, Porirua City Council, farmers and urban developers to drastically reduce the amount of sediment entering the Inlet are undoubtedly having a positive effect,” says Mr Shaw.

The cockles sampled ranged from 3mm to 40mm in length although some larger individuals measured up to 58mm in length. The numbers of juvenile cockles have also increased markedly from around 1.0% in 1992 to 16.2% in 2013.

Greater Wellington Regional Council Manager Biodiversity Tim Porteous says each survey has used the same design and methods.

“This has allowed us to make direct site, transect and tide level comparisons from survey to survey and cockle numbers are increasing at most of the sites sampled.”

There were some sites on the southern side of the Inlet where cockle numbers were lower than in the last survey in 2010, including at Seaview Road, Browns Bay and Duck Creek.

“At Browns Bay currents over the last decade have washed away the fine sediment leaving gravel and hard clay, mud has been accumulating at Duck Creek and the beach at Seaview Road was largely covered by sea lettuce,” Mr Porteous says.

“Excessive sea lettuce smothers the cockles and the current conditions at the other two sites are also not a good environment for them. It has to be remembered that the Inlet is dynamic environment so there has been improvement in some areas and deterioration in others, but overall the picture is very good.”

Porirua Harbour and Catchment Strategy and Action Plan Co-ordinator Keith Calder says this survey adds to the wealth of information being gathered about the harbour.

“While it is very early days in the implementation of the Harbour Strategy, it is pleasing to have an indication that we are heading in the right direction in reducing the sediment coming into the harbour.”

The full report by NIWA gives more detail and can be found at http://www.gopi.org.nz/cockle-survey-2/.


ends

© Scoop Media

 
 
 
 
 
Parliament Headlines | Politics Headlines | Regional Headlines

More Evidence - Scoop Press Conference Recordings:
PM's Post-Cab Presser 8/8/11
"at that point [Tucker] told me he'd release it ..."

Hager Revelations: Inquiry Into NZSIS Release Of Goff Docs

The Inspector-General of Intelligence and Security (IGIS), Cheryl Gwyn, announced today that she would be instituting an inquiry concerning allegations that the New Zealand Security Intelligence Service (NZSIS) might have released official information to Mr Cameron Slater, regarding briefings provided to the then Leader of the Opposition, for political purposes...

“I am satisfied there is a sufficient public interest justifying the commencement of an own-motion inquiry into the substance of the issues raised with my Office,” said Ms Gwyn. More>>

Goff: Director’s Letter Contradicts Key’s Claims

At yesterday’s media standup, when asked on the topic John Key said ‘I wasn’t told’...
“In a letter dated November 2011 former SIS director Warren Tucker states three times that ‘in accordance with the usual practice of keeping the minister informed’ the Prime Minister had been told. More>>


 

Parliament Today:

Electionresults.co.nz: National and NZ First Rise in Roy Morgan Poll

National has bounced back in the latest Roy Morgan Poll but the big winner has been New Zealand First who rise to their highest level of support since September 2013. More>>

ALSO:

Fish Pun Warning: By Hoki! It’s Labour’s Fisheries Policy

A Labour Government will protect the iconic Kiwi tradition of fishing by improving access to the coast, protecting the rights of recreational fishers and reviewing snapper restrictions, Labour’s Fisheries spokesperson Damien O’Connor says. More>>

ALSO:

It's Official: Governor General Gives Direction To Conduct Election

The Governor General has signed the writ directing the Electoral Commission to conduct the General Election on 20 September 2014. This is the formal authority to run the 2014 election, and enables candidate nominations to open tomorrow Thursday 21 August 2014. More>>

Gordon Campbell: No More Mr Nice Guy

When future historians seek to identify the exact moment when the prime ministerial career of John Key hit the downward slope, they may well point to Key’s interview yesterday with Guyon Espiner on RNZ’s Morning Report. More>>

ALSO:

Dirty (Politics) Weekend: Collins’ Admission Reason For Key To Act

"Despite claiming that the evidence about her in Nicky Hager's book was ‘false’ Judith Collins has now been forced to admit that she did send information about a Ministerial Services staff member to Cameron Slater for him to use in a baseless smear campaign. More>>

ALSO:

Potential Disasters: Underground Coal Fire On Denniston Plateau

Forest & Bird says one or more coal fires have broken out beneath the Denniston Plateau, and that the Department of Conservation (DOC) must stop Bathurst Resources’ preparatory mining work going on there until the fire or fires are extinguished. More>>

ALSO:

Bikes: Nats Plan $100 Million For Urban Cycleways

Prime Minister John Key has today announced $100 million in new funding will be made available over the next four years to accelerate cycleways in urban centres. More>>

ALSO:

New Tax Bracket, Child Poverty Fund: Greens Launch Billion Dollar Plan To Reduce Child Poverty

The Green Party has launched a billion dollar package to significantly reduce child poverty in New Zealand. The details of the plan were released at the party’s campaign launch in Auckland. More>>

ALSO:

Get More From Scoop

 

LATEST HEADLINES

 
 
 
 
 
 
 
 
Regional
Search Scoop  
 
 
Powered by Vodafone
NZ independent news