Monday, October 10, 2022

Scotland’s defenders of the seas: the volunteers standing up for sea life

At the moment, Scotland is doing a really good job of trashing our insgore waters"
Lauren Smith and Chris Rickard
Photograph : Murdo Macleod/The Guardian

From The Guardian by Karen MvVeigh

An unofficial network of fishers, divers and scientists are banding together to stop illegal fishing and curb coastal destruction


Scotland’s coastal waters are in trouble.
They contain some of the world’s richest and most diverse marine life: bottlenose dolphins, porpoises, minke whales and orcas are among 20 cetacean species found along its coast, while seagrass and kelp forests host otters, octopus, lobsters, sea urchins and squid.

But these waters are vulnerable.
A sobering assessment by the Scottish government in 2020, found that it had failed to meet targets to prevent damage to priority marine environments, causing five large seabed habitats to shrink.
Years of dredging, trawling, anchoring and overfishing are to blame, according to the report, which found that the climate crisis, ocean acidification, storms, disease and pollution from fish farms have also played a part.

As politicians fall short in tackling the accelerating human pressures on the seas, many coastal communities are taking matters into their own hands.

Howard Sargent and Rose Reid: saving marine life from rogue dredgers


At the end of a jetty on Holy Isle, in the Firth of Clyde on Scotland’s west coast, a sign informs visitors the seabed is a protected biodiversity hotspot.

In the clear waters of Lamlash Bay – a ribbon of sea between Holy Isle and the larger Isle of Arran – otters hunt for sea urchins among its kelp beds and maerl, a pink coralline seaweed, carpets the seabeds.
But despite their protected status, these waters are threatened, says Howard Sargent, 56, a former architectural designer who lives on Holy Isle.

Localization with the GeoGarage platform (UKHO raster chart)
 
The sea here was not always so full of life.
By the early 2000s, decades of trawling and dredging for fish had left it close to collapse.
Sargent traces the problems back to the government’s decision in the 1980s to allow trawlers to fish closer to the coastline.
“It’s the ‘tragedy of the commons’ – if it’s a free-for-all, everyone takes everything before anyone else can,” he says.

Residents intervened and in 2008, after a campaign, Lamlash Bay was designated a “no-take zone” – banning damaging fishing practices.

Since then, the waters have seen a dramatic revival.
Lobsters are now four times as abundant and scallop density is four times higher.
But rogue fishing vessels still seek to dredge the seabed for prawns and scallops.

Sargent and his partner, Rose Reid, 39, are part of an unofficial network of coastal defenders.
“We keep an eye out for dubious fishing activities,” says Sargent.

Howard Sargent and Rose Reid at Lamlash Bay.
Photograph: Murdo MacLeod/The Guardian


He reports any potentially illegal fishing to Marine Scotland, the branch of government regulating Scotland’s seas and fisheries, but it is hard to secure convictions without solid proof, as vessels are allowed to transit through no-take zones.

In March 2019, Sargent spotted a trawler dragging nets through the bay early in the morning.
He grabbed his camera and managed to get photographic evidence.
“It had big nets out the back and there were seagulls overhead,” says Reid, a psychologist.

They were due to give evidence against the vessel in court but at the last minute, the skipper pleaded guilty to having fishing gear deployed and was fined £2,200.

Campaigners called the fine “paltry” – the maximum penalty is £50,000 – and the couple were disappointed the prosecution was stopped.
But Sargent believes the case is a deterrent: “Local fishing boats are now aware that Lamlash Bay is well monitored.”

A spokesperson for Marine Scotland says it assesses all reports of suspected breaches of marine protected area (MPA) regulations and, where possible, deploys a compliance vessel to gather evidence and detain suspect boats.
It is also “rolling out tracking and remote electronic monitoring across the inshore fleet”.

 
Lauren Smith and Chris Rickard, at the Needle’s Eye in Macduff.
Photograph: Murdo MacLeod/The Guardian

Chris Rickard and Lauren Smith: fighting to save the ‘manta ray of the north’

Three years ago, Chris Rickard became one of the few people in Britain to have seen a flapper skate in the wild.
He spotted the elusive, critically endangered animal on a dive in the Summer Isles in the Scottish Highlands.

“I was struck by how something so massive and majestic could be so unknown in our waters,” says Rickard, a marine conservation consultant and keen diver, who lives near Macduff in Aberdeenshire.

The world’s largest skate, sometimes known as the “manta ray of the north”, flapper skates can reach up to three metres in length, with a wingspan of 2.5 metres.
The giant predator, once common in British waters, is so rare that it has been described as extinct in large parts of its former range due to overfishing; the north-west coast of Scotland is one of its last strongholds.

A few weeks after his sighting, Rickard, 45, saw on social media that a mermaid’s purse – the egg case of skates – had been found by a scallop dive boat on Scotland’s west coast.
He persuaded the boat’s skipper to take him to where it was found – the cold, dark waters of the Inner Sound of Skye, near the uninhabited island of Longay.

They dived more than 30 metres below the surface, where Rickard shone his torch through the gloom: “Suddenly I spotted a couple of purses.” By the end of the dive he had counted 40.
“I knew they were alive, as I could see embryos wriggling inside some of them.”

Localization with the GeoGarage platform (UKHO raster chart)

On surfacing, he texted Lauren Smith, a friend and marine biologist who runs Saltwater Life, a shark research and conservation NGO.
“This was really something,” says Smith, 39.

But live eggs, lying unprotected near scallop grounds, could be wiped out in seconds by dredgers.
Rickard contacted Marine Scotland but no protection was put in place.

Returning to the site in 2020 with Smith and others, they found more than 100 egg cases – the largest known flapper skate egg-laying site in the world.
With the help of Our Seas, an alliance of groups supporting sustainable seas, and Blue Marine Foundation, they publicised the find and called on the Scottish government to take action.

In March 2021, the government designated the site “the Red Rocks and Longay urgent marine protected area” and banned all fishing.
It is now deciding on permanent protection measures.

Smith and Rickard would like to see more of Scotland’s waters protected from trawling.
“At the moment, Scotland is doing a really good job of trashing our inshore waters,” Rickard says.

A Scottish government spokesperson said 37% of Scottish waters were MPAs and it was committed to increasing protections, including through new highly protected marine areas.
These will cover at least 10% of Scottish waters by 2026, “prohibiting all extractive, destructive and depositional activities”.

John Aitchison at the Sound of Jura, with his spotting telescope.
Photograph: Murdo MacLeod/The Guardian

John Aitchison: halting a fish farm in a protected area


John Aitchison, a wildlife cameraman, director and producer, has travelled to some of the world’s most remote places for films including the BBC’s Frozen Planet, to witness the wildlife crisis at first-hand.

But it was back home, in Mid-Argyll, that he decided to take action.
A few weeks before Christmas 2016, he discovered plans for an industrial-sized fish farm off the Sound of Jura, a designated MPA.

The company behind the farm planned to site a dozen 100-metre circular cages capable of housing 1 million rainbow trout, just off the coast at Dounie.
Nearly everyone thought the site was inappropriate, Aitchison, 56, says.
“It felt like a juggernaut coming towards us.”

Kames Fish Farming argued its farm would be built and operated responsibly and would create local jobs.
The community argued that pesticide discharge, sea lice and fish escaping from the farm would threaten the environment and wild salmon.

Localization with the GeoGarage platform (UKHO raster chart)
 
Aitchison, chair of the Friends of the Sound of Jura, had to take a crash course in licensing and planning law: they only had 28 days to oppose the granting of a licence by the Scottish Environment Protection Agency.
More than 3,000 people signed a petition against the plans, more than a third from Argyll’s villages and hamlets.

It was a frustrating process, says Aitchison.
But they got a lucky break.
A seabed survey found northern sea fans, some of Scotland’s rarest sea life, close to the proposed site.
In December 2017, Kames Fish Farm withdrew its application.
“Although we succeeded, it left us realising how difficult it is to influence that type of decision.
In Scotland, planning rules favour developers and they favour salmon farming,” Aitchison says.

A spokesperson for the Scottish Environment Protection Agency said itlistens to those who share an interest in Scotland’s water environment before it authorises a development.

David Nairn, right, with David and Jean Ainsley.
There is a salmon farm in the background.
Photograph: Murdo MacLeod/The Guardian

David Nairn and David Ainsley: protecting porpoises from noise pollution


Five years ago, David Nairn, a skipper and conservationist, was watching porpoises on his cruiser in the Firth of Clyde, the deepest coastal waters in the UK, when he noticed something amiss.

“We’d been surveying them, zigzagging up the Clyde,” says Nairn, 50, who records underwater noise, identifying the mammals – a protected species in Scottish waters – by their high pitched clicks.
“But when I passed fish farms, there were none.”

Later analysis revealed a “horrendous noise”, says Nairn, founder of Clyde Porpoise.
It was an acoustic deterrent device (ADD) used to scare off seals that attack fish-farm cages.

Porpoises, which are not a threat to fish farms, “are really affected by high-frequency noise”, says Nairn, who estimates as many as 2,500 live in the Clyde during the calving season.

Localization with the GeoGarage platform (UKHO raster chart)
 
Farther up the west coast, a marine biologist working in wildlife tourism was also convinced that acoustic deterrents were driving cetaceans away.
“My life is out at sea, watching for porpoises, dolphins and whales,” says David Ainsley, a former creel skipper who runs Sealife Adventure, a wildlife tourism company in Seil Island, with his wife, Jean.

They say the difference between areas with salmon farms and those with none is like “chalk and cheese”.
“If you damage the hearing of an echo-locating animal, it can die because it can’t find food,” he says.

Nairn and Ainsley, who met through the Coastal Communities Network, an alliance of grassroot groups in Scotland, began working together to tackle the problem.

They knew that, under Scottish law, fish farms using acoustic deterrents need a licence, unless they can demonstrate that the devices do not disturb cetaceans.
They also knew that by 2018, about 90% of Scottish fish farms were using them.
If you damage the hearing of an echo-locating animal, it can die because it can’t find food David Ainsley

Despite the licence requirement, Nairn and Ainsley discovered that Marine Scotland did not hold any information about how many acoustic deterrent devices were used in fish farms.

They argued – via petitions, parliamentary questions and using acoustic evidence – that the Scottish government should enforce existing law.
During this time, deterrent use dropped off dramatically.

In November last year, the pair enlisted Guy Linley-Adams, an environmental solicitor, who made a formal complaint to the independent regulator, Environmental Standards Scotland (ESS), accusing Marine Scotland of failing to ensure fish farms were complying with the regulations.

In August, ESS published a report recommending improvements in the Scottish government’s “compliance process”, which it says have since been implemented.
Linley-Adams described this as a “de facto ban” on acoustic devices in salmon farming, because it would be “impossible” to prove the use of the device would not disturb cetaceans, or for the industry to successfully apply for a licence, especially as effective alternatives such as seal nets are available.

The Scottish government told the Guardian it welcomed the ESS report and said fish farmers must obtain any relevant consent or demonstrate that acoustic devices “will not harm marine mammals’”.
Salmon Scotland, which represents the salmon farming industry, said no devices were currently in use in Scottish farms.“There is no ‘victory’ or ‘de facto ban’,” a spokesman said.

Theo Bennison prepares to deploy a remotely operated underwater vehicle from the Sea Beaver in Oban.
Photograph: Murdo MacLeod/The Guardian

Theo Bennison: mapping life on the seafloor

Marine ecologist Theo Bennison has spent the past five months on the Sea Beaver, a boat travelling around the Scottish coast to measure the health of the seas.

Operation Ocean Witness, run by Greenpeace and the Scottish charity Open Seas, relies on networks of local communities to report on threats including illegal fishing in MPAs.

In June, sources led them to Orkney, where they found dredging damage to maerl beds, which take decades to grow and act as a nursery for invertebrates and fish.
 
Localization with the GeoGarage platform (UKHO raster chart)

“It is shocking that damage like trawling and dredging is allowed to happen in protected areas,” says Bennison, 28, a researcher with Open Seas.
“The government said it was going to protect biogenic reefs, which maerl beds are, and the fact that this has happened is pretty worrying.”

Open Seas will report its findings to Marine Scotland.

By using drone footage, Bennison and the team also helped produce the first map of an important seagrass meadow off Papa Westray, measuring 30 hectares (74 acres) in total.

There are already five fish farms in the area, says Bennison.
“Hopefully, it will help the community in their battle against a new proposal for another fish farm.”
 


Sunday, October 9, 2022

Killer whales eating white sharks in Mossel Bay, South Africa


[adapted from official press release]
The first direct evidence of orcas killing white sharks in South Africa has been captured by both a helicopter and drone pilot, and a new paper published today in The Ecological Society of America’s journal Ecology presents both sets of video footage, which provide new evidence that orcas are capable of pursuing, capturing and incapacitating white sharks.
One predation event was filmed on drone, but the researchers believe that three other sharks may also have been killed.
While a clip of the drone footage was aired in June on #DiscoveryChannel this was only part of an hour-long hunt of multiple sharks, as revealed by the exclusive helicopter footage.
The new paper offers more extensive footage, along with data from tags, drone surveys and shark-tour boats showing that white sharks fled from the Mossel Bay region of South Africa for several weeks.
Orcas have been observed preying on other shark species, but direct observation of predation on white sharks locally has been lacking – until now.
“This behavior has never been witnessed in detail before, and certainly never from the air,” said lead author Alison Towner, a senior shark scientist at Marine Dynamics Academy in Gansbaai, South Africa.
Only two killer whales in South Africa have been previously linked to hunting white sharks, but never actually seen ‘in action’.
Only one of those animals was observed in the new footage, along with four other killer whales.
The authors believe that the involvement of these four new whales suggests the behavior may be spreading.
The study also gives new insights into sharks’ attempts to evade capture by orcas.
On two occasions, orcas approached sharks closely and slowly, while the shark, instead of fleeing, stayed close to the orca, keeping it in view – a common strategy that seals and turtles use to evade sharks.
However, orcas are social and hunt in groups, and the researchers believe these behaviors may render the circling strategy ineffective for white sharks.
“Killer whales are highly intelligent and social animals.
Their group hunting methods make them incredibly effective predators,” said marine mammal specialist and study co-author Dr Simon Elwen, Director of Sea Search and a research associate at Stellenbosch University.
The study confirmed that one infamous killer whale, locally known as “Starboard,” was part of the pod and ate what was suspected to be a large piece of shark liver at the ocean surface.
The novel footage also revealed how another killer whale bit into a white shark at the region of the liver.
“I first saw Starboard in 2015 when he and his close-associated ‘Port’ were linked to killing seven gill sharks in False Bay.
We saw them kill a bronze whaler [copper shark] in 2019 – but this new observation is really something else,” said David Hurwitz, a boat-based whale-watching operator from Simon’s Town Boat Company.
The new study also analyzed drone and cage dive boat survey data before and after these predation events.
White sharks were seen on every survey day for the weeks prior to the predation event and multiple sharks were seen on the day of the predations.
However, only a single white shark was seen in the 45 days after the predations, confirming a flight response by sharks.
“We first observed the flight responses of seven gills and white sharks to the presence of killer whales Port and Starboard in False Bay in 2015 and 2017.
The sharks ultimately abandoned former key habitats, which has had significant knock-on effects for both the ecosystem and shark-related tourism,” said South African National Parks’ shark expert and marine biologist, Dr Alison Kock.
Previous studies have documented how new behaviors spread among killer whales over time through cultural transmission.
The authors suggest that if more killer whales adopt the practice of hunting white sharks, then the behavior will have far wider impacts on shark populations.

Saturday, October 8, 2022

World's largest photo of NYC


EarthCam recently unveiled the GigapixelCam X80, which is a robotic camera that can produce more than 80,000-megapixel panoramas.
To prove it, the company used the X80 to make the highest resolution photo of New York ever captured: 120,000-megapixels.
 
 NY by Stefano  Termanini
 
1883 Matt Dripps High res

 

Friday, October 7, 2022

Was the forecast for hurricane Ian bad? Depends on your perspective


GULF OF MEXICO - SEPTEMBER 28: In this NOAA handout image taken by the GOES satellite at 13:26 UTC, Hurricane Ian moves toward Florida on September 28, 2022 in the Gulf of Mexico.

The storm is expected to bring a potentially life-threatening storm surge and hurricane-force winds. (Photo by NOAA via Getty Images)


From Forbes by Marshall Shepherd
 
I want to be careful about how this piece is written because there are lives that have been destroyed by Hurricane Ian.
I know some of these people.
My heart, thoughts, and prayers go out to all affected.
Hurricane Ian was the fifth strongest storm to make landfall in the U.S.
and was a particularly challenging storm to forecast.
I have seen people and even some media outlets question the accuracy of the forecasts.

Was the forecast for Hurricane Ian bad?
The answer really depends on your perspective.

First, let’s deal with the meteorological and scientific answer.
From that perspective, I would say the forecast was somewhat accurate.
Hurricane experts point out that over the entire time, the most highly-impacted area around Lee County was always within the cone of uncertainty.
Brian Mcnoldy is an expert at the University of Miami who has written extensively on the “cone of uncertainty,” which in my view is one of the most misinterpreted weather communication tools in our arsenal.
McNoldy wrote in a Tweet, “But if you are told for 5 consecutive days that there's a 2/3 probability of a major hurricane making landfall at your location, wouldn't that mean anything? It sure would to me!” He was responding to a comment about the intensity (more on that later).



Hurricane expert explaining the cone of uncertainty
TWITTER AND BRIAN MCNOLDY

Most people interpret the cone incorrectly and assume the storm is forecasted to go down the center of the cone.
However, the official National Hurricane Center definition says, “The cone represents the probable track of the center of a tropical cyclone, and is formed by enclosing the area swept out by a set of circles (not shown) along the forecast track (at 12, 24, 36 hours, etc)....size of each circle is set so that two-thirds of historical official forecast errors over a 5-year sample fall within the circle.”
Essentially, this says there is a chance the center of the storm can track anywhere within the cone.
It is absolutely reasonable that people would believe that the Tampa Bay Area to the north was going to be the main region of impact.
Even some of my significant concerns focused on Tampa Bay.
However, it was not a guaranteed outcome, and the ultimate region of impact was always in the cone.

NOAA meteorologist and hurricane expert Sim Aberson told me, "It needs to be stressed that the storm and its impacts will be felt far outside the cone."
He also noted that it is problematic the way the forecast is presented by many outlets.


The cone of uncertainty has narrowed in recent decades
BRIAN MCNOLDY AND TWITTER

It became very evident to many of us in the days leading up to landfall that the track forecasts (and the cone) were shifting further eastward and southward.
If you read the National Hurricane Center forecast discussions over the course of the storm, they were very clear that there was greater uncertainty than usual within 3 days.
Mcnoldy writes an outstanding weather blog, and he recently noted that over the years the “cone of uncertainty has narrowed as forecast accuracy improves.
However, it is still a “cone” and not a “line.”
It will never be a line and hurricane impacts are not just a point or line anyhow.
Theycover expansive areas.

The graphic below illustrates how much hurricane forecast track error has declined over the years.
However, the error is not “zero.” Unfortunately, this is why a cone has to be used to account for expected error and what many perceive to be “sudden changes” in the forecast.
As for the intensity of Ian, it was clear for many days that the storm was going to be a major storm.
On September 25th, I wrote in Forbes, “The other concern for me is about the potential for rapid intensification.
Ian will likely be a hurricane as it approaches Cuba and will potential be a major hurricane in the Gulf of Mexico.”


Official Annual Average Track Errors
NOAA

Ok, that’s the meteorological perspective.
The answer to the question posed about the accuracy may be very different for someone adversely impacted or did not follow the storm as closely as people like me do.
The reality for many people is they receive a forecast from their App or favorite TV source and then act on that static information.
For example, here in the Atlanta area, people see a forecast for snow five days out.
It often changes, and they ask me why the forecast was so bad.
I caution people to watch the “evolving” forecast not one you consumed days ago.
In the case of high impact events like Hurricane Ian, I recommend even more frequent attentiveness.
Models are being update on approximately 3-6 hour time frames so information can change quickly.
The best source is the National Hurricane Center website, your local National Weather Service office or their social media platforms.

Our weather community also has to think carefully about messaging.
Over my years as President of the American Meteorological Society (AMS), a public scholar, and Director of the Atmospheric Sciences program at the University of Georgia, I have noticed a couple of things.
People struggle with probability, processes that have multiple things happening and non-linearity.
They also oversimplify more complex things to simplistic models they can understand even if that simplification is incorrect.
I have also observed that everything is “local.” For example, people tend to be most interested in their immediate conditions or evaluate outcomes based on their local situation.
For example, it is rare that there is not some type of warning, watch, or outlook for tornadoes these days.
However, it is very common to hear, “It came without warning.” It raises the question that many of my social science colleagues are now exploring in a meteorological context.
If the weather information is perfect, is it a good forecast if it wasn’t received, understood, or acted upon?
 
Very turbid waters flowing into the ocean are a sign of how heavy and catastrophic the Ian hurricane was in the western coast of Florida.
Copernicus Sentinel2
 
Some colleagues offer some interesting perspectives to consider.
Don Boesch is an ocean scientist and an emeritus scholar at the University of Maryland Center for Environmental Science.
He tweeted, “....All storm surge is local” to the point I made earlier in this piece.
He told me, “....In storm-surge risk communications we must understand the fine scale of processes and of community and personal decision making.” I would add consideration of socio-economic capacity and vulnerability as well.
He went on to say, “....Potential 7 ft.
surge still merited action.” On the cone of uncertainty, veteran meteorologist Richard Berler sent me a messaging saying, “ The attention end up getting drawn to the official track forecast rather than the full range of plausible outcomes.” Berler also suggested that the “Boom or Bust” messaging that the Washington Post Capital Weather Gang employs in its winter weather forecasting might be a useful model for conveyance of potential hurricane impacts.

At the end of the day, this question remains.
Is our weather jargon and public interpretation properly aligned for risk messaging?


FORT MYERS FLORIDA - SEPTEMBER 29: Boats are pushed up on a causeway after Hurricane Ian passed through the area on September 29, 2022 in Fort Myers, Florida.
The hurricane brought high winds, storm surge and rain to the area causing severe damage.
(Photo by Joe Raedle/Getty Images)

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