Saturday, 18 February 2017

Whales, drones and ice: Six bold new Kiwi studies


Whales, toothfish and the enigma that is Antarctica's sea ice will be targeted in six urgent Kiwi studies on the frozen continent and in the Southern Ocean.

The projects, funded by the Christchurch-based New Zealand Antarctic Research Institute (NZARI), aim to gather fresh insights into the effects of climate change on Antarctica and the Southern Ocean.

"The degree of potential disruption to the coastal and near-shore regions of Antarctica from ocean and climate warming is an overarching theme of the research," NZARI director Professor Gary Wilson said.

"From algae to toothfish, there is a clear focus on the potential for living species to resist the changes in ocean conditions brought about by global warming."

One study, led by Otago University researchers Professor Stephen Dawson and Dr William Rayment, focuses on southern right whales.

Mothers give birth to calves weighing about 1500kg, yet they do not feed for the several weeks they are on the breeding grounds.

This extraordinary demand for energy was met from reserves accumulated in foraging areas, where they fed on copepod crustaceans and small krill, which in turn fed on phytoplankton, the base of the Southern Ocean food web.

Primary productivity was driven by oceanic conditions, which were profoundly influenced by climate change.

Dawson and Rayment will study how climate-driven variations in productivity affects the condition and breeding success of right whales, measured using specially equipped drones, in the sub-antarctic Auckland Islands.

http://www.nzherald.co.nz/climate-change/news/article.cfm?c_id=26&objectid=11800223

Thursday, 16 February 2017

Humboldt penguin is stolen from German zoo; keepers fearful


German police say a Humboldt penguin has been stolen out of its cage from a zoo in the southwestern city of Mannheim, and zookeepers say the bird could easily die if it's not returned soon.

Zookeepers noticed the penguin missing during a routine count on Saturday of the South American birds, the dpa news agency reported yesterday.

After a search of the grounds, zoo personnel were unable to find any signs that the flight-less penguin, which is 50 centimetres tall and weighs 5 kilogrammes, escaped. They concluded it was stolen.

http://www.nzherald.co.nz/world/news/article.cfm?c_id=2&objectid=11800068

Tuesday, 14 February 2017

How we're waking climate change's sleeping giant


A world-leading glaciologist visiting New Zealand says scientists are fast running out of time to fully understand dramatic changes under way in climate change's sleeping giant: Antarctica.

Professor Eric Rignot, based at the University of California, Irvine and NASA's Jet Propulsion Laboratory, will this week give a free talk in Wellington, outlining growing concerns scientists have about the frozen continent and pressing the urgent case for action on climate change today.

Rignot has studied the world's largest glaciers in Greenland and Antarctica since the early 1990s, when NASA and other international space agencies first started collecting satellite data on them.

He is best known for ground-breaking research in 2014 which revealed the rapidly melting section of the West Antarctic Ice Sheet appeared to be in an irreversible state of decline, with nothing to stop the glaciers in this area from melting into the sea.

In an interview with the Herald, Rignot said while historical measurements stretched back a century, some of the most worrying discoveries in Antarctica had come only in recent decades.

The first evidence of warmer water causing melting at Pine Island Glacier, now known to be responsible for a quarter of Antarctica's ice loss, was made in 1996.

The glacier is part of the 25 million square kilometre West Antarctic Ice Sheet, which satellite measurements estimate is losing more than 150 cubic km of ice each year.

Rignot further noted the first physical measurements of warmer water affecting the much larger East Antarctic Ice Sheet, at Totten Glacier, were recorded only in 2015.

http://www.nzherald.co.nz/world/news/article.cfm?c_id=2&objectid=11799290

Sunday, 12 February 2017

It's so hot in central Queensland you can fry an egg on the bonnet of your car


It is so hot in Queensland at the moment that you can literally fry an egg on the bonnet of your car.

Yesterday afternoon a Queensland police officer demonstrated the infamous trick in a video posted online by the state's police media unit as temperatures soared into the mid 40s.

Much of the East coast of the country has been sweltering in the current heatwave but spare a thought for residents in the tiny rural town of Birdsville, QLD who are suffering through an extraordinary run of heat.

Temperatures in Birdsville has surged into the 40s for 18 straight days with the mercury tipped to reach a whopping 47 degrees today, according to the Bureau of Meteorology.

The town's February maximum temperature record of 46.2C is set to be broken, far exceeding the town's average February maximum is 38C.

As a number of QLD towns notched new heat records yesterday, this morning Queensland's police media unit reminded people not to undertake activities that could put emergency workers in danger.

" Call off activities like bushwalking, hiking, climbing in #heatwave. You're putting us (Queensland Fire and Emergency) at risk if we have to rescue you," authorities wrote on Twitter.

As a cooler change blows into Sydney, much of NSW is facing the most catastrophic fire danger in history as a monster hot air mass continues north. While temperatures aren't even tipped to reach 30C in Sydney today, much of NSW will remain above 40, as fire dangers reach unprecedented levels.

Friday, 10 February 2017

More than 400 whales stranded on Farewell Spit


Hundreds of whales have stranded on Farewell Spit but about 300 have died.

The Department of Conservation says 416 pilot whales stranded over night. Project Jonah has issued a Facebook alert about the mass stranding at the northern end of Golden Bay.

Project Jonah said 75 per cent of the whales were dead when rescuers arrived at first light.
Rescue efforts were focusing on refloating the remaining 100 live whales at 10.30am when high tide was due.

Some of those that survived the night stranding were already able to swim on their own.

DOC spokesman Mike Ogle said the whales had stranded on the inside beach of Farewell Spit, 1km from Triangle Flat, near Puponga.

Ogle urged as many people as possible to help refloat the whales that were still alive.

http://www.nzherald.co.nz/marine/news/article.cfm?c_id=61&objectid=11798056

Wednesday, 8 February 2017

The Abyss: underwater wonders need protection


Hidden beneath the waves, submarine canyons are deep, dramatic chasms in New Zealand's underwater landscape, sometimes plunging to depths of several kilometres.

But more needs to be done to protect these rich marine ecosystems from the myriad pressures humans are heaping on them, from fishing and litter to the extraction of oil and gas, scientists say in a new study.

Around the world, there are an estimated 10,000 of these major features of continental margins, with at least 230 found off the coast of New Zealand.

These include the 60km-long, 1.2km-deep Kaikoura Canyon, home to an abundance of life spanning from tiny plankton to the giant sperm whales they famously attract to the coast, and the Cook Strait Canyon, starting just 10km off the Wellington coast and reaching depths of 3km south of Cape Palliser.

Recent studies of canyons have boosted scientists' understanding of their ecological role, the benefits they bring to humans, and how our activities are affecting their environments.

Dr Ashley Rowden, a marine ecologist at the National Institute of Water and Atmosphere (Niwa), is part of an international team of scientists that has reviewed recent studies of submarine canyons around the world.

In a study published today in the scientific journal Frontiers in Marine Science, Rowden and his colleagues report how only 10 per cent of canyons worldwide are covered by marine protected areas (MPAs) - and these are not evenly distributed around the globe.

http://www.nzherald.co.nz/climate-change/news/article.cfm?c_id=26&objectid=11793435

Sunday, 5 February 2017

El Nino could make a comeback as Australia sees Pacific warming


Less than a year after the world said goodbye to one of the strongest El Ninos on record, forecasters are predicting the weather pattern may make a comeback.

Climate models indicate the central Pacific Ocean will probably warm over coming months, suggesting neutral conditions or El Nino are the most likely scenarios for the Southern Hemisphere winter-spring period, Australia's Bureau of Meteorology said.

Five models show El Nino thresholds may be reached by mid-to-late winter, it said.
The 2015-16 El Nino was the strongest since the record event of 1997-98.

The pattern reduced rainfall in the Indian monsoon, parched farmlands, and curbed production of cocoa in Ivory Coast, rice in Thailand and coffee in Indonesia. India's Skymet Weather Services said last week that El Nino showed signs of resurfacing in coming months.

http://www.nzherald.co.nz/world/news/article.cfm?c_id=2&objectid=11792558