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

 


Improving lake good news for fisheries

Improving lake good news for fisheries


Lake Rotoiti water quality is the best it has been in decades and this can only be good for fisheries say experts from Fish & Game, NIWA and Bay of Plenty Regional Council.

Regional Council General Manager Natural Resource Operations, Warwick Murray, said water quality improvements were a result of interventions through the Rotorua Te Arawa Lakes programme and that was great news for the community, the Crown and the programme.

“The Ohau diversion wall has been extremely successful in improving water quality. This, coupled with sewage reticulation, has meant we have reached the water quality target for the lake,” Mr Murray said.

“The wall was constructed in 2008 and diverts nutrient rich waters from Lake Rotorua entering Lake Rototi. This is allowing us to see improvements in Lake Rotoiti now and gives us the time needed to make the sustainable changes necessary to secure long term water quality improvements,” he said.

“At the same time we must make sure our interventions don’t have any adverse effects on lake ecology or fisheries and we have a fish monitoring programme in place to monitor the long-term effects of the diversion wall on smelt, trout, koura and kakahi,” Mr Murray said.

The Regional Council leads the fisheries research and monitoring with assistance from NIWA, Fish & Game and Ian Kusabs & Associates. Data has been collected and reviewed for the last seven years, including a period of two years prior to the wall’s construction, by an independent panel of New Zealand fishery experts.

“The latest results from the Fish Monitoring Programme have been very positive,” he said

NIWA Principal Scientist Freshwater Fish Group Manager Dr David Rowe said the results of the smelt monitoring programme in 2012/13 indicated several runs had occurred in the channel over spring.

“The results confirm that strong upstream migrations of both adult and juvenile smelt are occurring with the diversion wall in place.”

Smelt are the main food source for trout and NIWA monitors their channel runs using traps and combining the data with morning and evening observations of smelt movements and shag and gull numbers.

Dr Rowe said larval smelt in Lake Rotoiti also appeared to be increasing as lake water clarity improved.

Eastern Fish & Game Manager Rob Pitkethley said the start of the current trout season was the best on record since surveys began three seasons before the wall went in and this spring’s fishing was a large improvement on the past three seasons.

“Schools of smelt were noted running through the channel prior to the opening in October, and the runs of smelt have lasted through November, which has not been seen for a number of seasons,” Mr Pitkethley said.

“Trout caught in the channel have been in better condition compared to the last few seasons. Recent highly productive smelt spawning from Lake Rotoiti appears to have translated through the food chain into good trout growth, in both lakes Rotoiti and Rotorua.

“Monitoring of the Lake Rotorua and Rotoiti fisheries has shown fluctuations in trout growth and condition, and some recent improvements. The absence of algal blooms and improvements in water quality on both lakes should be beneficial for the longer term health of these fisheries,” said Mr Pitkethley.

Ends

© Scoop Media

 
 
 
 
 
Parliament Headlines | Politics Headlines | Regional Headlines

Patience: Drive Safe

Be patient before passing is the AA's message for drivers this Labour weekend.

"People taking crazy risks to get past other vehicles is one of the most dangerous things on the road,” says AA spokesperson Dylan Thomsen.

“The weather is looking good for the long weekend so the roads will be busy. Unfortunately, that also increases the chances of people getting frustrated and trying a risky passing manoeuvre. When they get past, there will probably be more traffic up ahead anyway so it won’t get people there faster.” More>>

 
 

Parliament Today:

Employment Relations Bill: Govt Strains To Get Tea Break Law Through

The Government has been left with egg on its face - failing to get its much-vaunted, but hugely unpopular, meal break law passed in the first week of its new term, Labour spokesperson on Labour Issues Andrew Little says. More>>

ALSO:

Guns: Police Association Call To Arm Police Full Time

"The new minister gave his view, that Police do not need to be armed, while standing on the forecourt of parliament. The dark irony was that the interview followed immediately after breaking news of a gunman running amok in the Canadian parliament in Ottawa..." More>>

ALSO:

Gordon Campbell: On The Tokenism Of New Zealand's Role Against Islamic State

Our contribution against IS will be to send SAS forces to train the Iraqis? That’s like offering trainers to General Custer just as the 7th cavalry reached the Little Big Horn. More>>

ALSO:

Scoop Business: Shell And Todd Caught Drilling Without Approval

Multi-national oil company Shell’s New Zealand arm and local energy giant Todd Energy have breached the new law governing New Zealand’s Exclusive Economic Zone, the Environmental Protection Authority says in an Oct. 10 document released by the Green Party. More>>

ALSO:

Gordon Campbell: On Pharmac, Gough Whitlam And Sleater-Kinney

We’re not at the outset of these negotiations. The outset was six years ago, and negotiators were hoping to have some sort of ‘framework’ deal finished in time for the APEC meeting in a few weeks’ time. These ‘extreme’ positions are what we’ve reached near the intended end of the negotiations… More>>

ALSO:

PM Of Many Hats: Questions, No Answers On Whale Oil

Dr RUSSEL NORMAN (Co-Leader – Green) to the Prime Minister: How many times since November 2008 has he spoken with blogger Cameron Slater on the phone and how many times, if any, has he texted him?
Rt Hon JOHN KEY (Prime Minister): None in my capacity as Prime Minister. More>>

ALSO:

Aussie Investigation Dropped: Call On Minister McCully To Pursue The Case Of Balibo Five

West Papua Action is deeply concerned at the lack of any clear outcome from the Australian Federal Police inquiry into the 1975 deaths of the ‘Balibo Five’ including NZ journalist Gary Cunningham. More>>

ALSO:

'Feed The Kids' Bill: Metiria Turei To Lead Fight On Feeding Hungry Children

Green Party Co-leader Metiria Turei is urging all political parties to support the Feed the Kids Bill which she inherited today from Mana leader Hone Harawira. More>>

ALSO:

Parliament Today: State Opening Of Parliament

The House sat at 10.30am on Tuesday before MPs were summoned to hear the Speech from the Throne in the Legislative Council Chamber. More>>

ALSO:

Get More From Scoop

 

LATEST HEADLINES

 
 
 
 
 
 
 
 
Regional
Search Scoop  
 
 
Powered by Vodafone
NZ independent news