Noise disrupts interdependencies in the web of life

While it is easier to evaluate specific impacts of a stimulus on specific animals, we know that nature is not just a catalog of individual species; rather it is a fabric of interdependent organisms living in interconnected physical habitats.

This point is punctuated in a recent paper on the Proceedings of the Royal Society that evaluates the noise impacts of gas well fields on the pollination and dispersal of piñon pine seedlings in New Mexico.

Aerial view of roads and pipes of a fracking field operation

Aerial view of roads and pipes of a fracking field operation

Gas wells use compressors which can be really noisy. The paper examines how the noise of a compressor field impacts hummingbirds that pollinate the piñons, and blue jays that disperse the piñon seeds. They found that the number of piñon seedlings were one quarter the density in the noisy compressor area than in quiet areas. This would indicate that the hummingbirds are not bothered by the noise, but the jays are.

This negative seed dispersal condition is further amplified by the fact that mice that eat the seeds are also not bothered by the noise, so that while there is no negative impact on pollination, the seeds that are produced are eaten by mice rather than distributed by jays.

Pazflor Field Layout for sea-floor processing

Pazflor Field Layout for sea-floor processing

This is an example of how noise disrupts a simple set of relationships between three species of vertebrates, and how the disruption impacts one species of tree.

We know quite a bit about terrestrial interdependencies because we spend most of our time “on the ground.” But we can be sure that the ocean is full of equally important interdependencies which we have yet to discover.

This adds yet another dimension we should consider as we roll unmitigated noise sources into the ocean.

Shipping noise correlated to stress in whales

A recent paper in the Proceedings of the Royal Society correlates shipping noise with stress levels in baleen whales. Heretofore this has been a difficult assumption to prove because we do not have any baseline of whale stress levels prior to the introduction of the vast shipping networks we now use in global trade.

Map of shipping routes

Researchers can get an idea of metabolic stress levels because they are correlated to hormone indicators (glucocorticoids) in body fluids. Rosalind Rolland with the New England Aquarium was studying the glucocorticoids in the feces of North Atlantic Right whale in the Bay of Fundy through September 2001. She was doing this research concurrently with a study on Right whale social behavior being conducted by Susan Parks with Penn State and Syracuse University.

Both of these studies overlapped the September 11 tragedy and the subsequent halting of air and sea transportation for a few days. It was across this time that the noise levels in the ocean decreased significantly. Parks, Rolland and other colleagues brought their work together and noticed a marked decrease in stress indicators with the decrease in shipping noise.

Whale Feces Sniffing Dog

This is a real benchmark to our understanding of how chronic anthropogenic noise impacts baleen whales – which are too large to test in lab settings and not really interested in cooperating with behavioral scientists in the wild. Given that the glucocorticoids are part of a feedback mechanism in the immune system, this finding also confirms concerns that shipping noise compromises the health of these whales.

The paper is discussed in “lay” terms in a Science article that also introduces us to the critically important scientific instrument, a dog – whose nose can pinpoint whale feces in the ocean. (The dog was not included as a co-author on the paper.)

This paper should provide us with important supporting data as we attempt to slow industrial development in the pristine acoustic environment of Arctic.

Fossil Fuel Noise in the Arctic – website launches!

If you have been anywhere within earshot of the media recently you may have noticed that the Oilmen are on a bit of a rampage. Any sustainable energy program, environmental regulation, or legal challenge that does not promote their agenda is met with apoplectic derision as a “job killer” or worse.

Oil Seeking ArmadaOne of the drivers behind this is the American Petroleum Institutes (API) strategic plan to make America the #1 global oil and gas producer by 2018. API’s president Jack Gerard aims to accomplish this by expanding fossil fuel extraction on all US coasts, rolling back environmental regulations, and defending industry subsidies.

While it may just seem like the “flow of tides” in the public sector, those of us in conservation organizations are working overtime on many fronts: “Fracking,” East Coast drilling, Eastern Gulf lease expansion, Keystone XL, California Coast horizontal drilling, Outer Continental Shelf deep-water drilling, opening up the Arctic, and of course the climate impacts of these new fossil fuel energy sources – are all in play right now.

We have been anticipating this and for that last year have been working with World Wildlife Fund (WWF) and Natural Resources Defense Council (NRDC) on a highly interactive and informative website specifically focused on the noise impacts of oil and gas operations in the Arctic.

“Don’t be a Buckethead” refers to the acoustical masking that all of the new introduced noise of industry will impose on the highly acoustic habitat of the Arctic Ocean (remember that it is mostly dark throughout the winter, setting the evolutionary stage for some amazing bio-acoustic adaptations). This point is illustrated with a fun and quirky “Buckethead” video on the website.

While we believe that a “full court press” on hydrocarbon development is generally a bad idea, given what we do know (and don’t know) about the risks and impacts, drilling in the Arctic is completely unacceptable.

Please help us halt this foolhardy proposal. Visit the Buckethead site to learn more – or cut to the chase and sign our petition to the National Marine Fisheries Service asking them to do their job and protect the pristine Arctic Ocean from industrial compromise.

Then visit the site…

The Arctic is changing fast, and it’s going to cost us a lot

I’ve just finished reviewing a 1600 page “Draft Environmental Impact Statement” (DEIS) issued for public comments about the five year plan for oil and gas exploration in the Arctic. The objective of the “draft” is to provide US citizens the opportunity to chime in on how – and if – we want the US Arctic waters surveyed for oil and gas deposits.

It is particularly ironic that just as the DEIS was being issued Shell Oil began dealing with a huge oil spill off the coast of Nigeria and another spill in the Gulf of Mexico (which occurred during the same sort of exploratory drilling that is being proposed in the Arctic), and Chevron is currently dealing with yet another platform explosion off the Nigerian coast. This tragic irony is punctuated throughout the DEIS by the recurring statement that an oil spill would be “highly unlikely.”

The rosy assumptions of “negligible impacts” colors the entire DEIS; the subjective term “unlikely” is peppered throughout when addressing impacts of seismic airgun surveys, discharge of drilling “muds” and chemical waste, noise from shipping and air transport, air pollution, and noise from icebreakers. And while the “highly unlikely” oil spill is on everyone’s mind, many other adverse impacts of oil and gas exploration are not even addressed in the DEIS; for example the persistent noise of thruster-stabilized drilling platforms, underwater acoustical communications equipment, and erection of “jack-up rigs.” While these noises may not be as loud as the seismic airgun surveys addressed in the DEIS (which produce continuous series of explosions that can be heard hundreds to thousands of miles away in the ocean) they will nonetheless produce a chronic smog of noise pollution which will compromise the acoustical habitat that fish, whales, and other marine life depend on to communicate, find food, and evade predators.

It is clear that the intention of the exploration strategies proposed in the DEIS are not to “just find out what is out there,” but rather to find out where extraction operations will yield the best results. If there is one thing that is “highly unlikely,” it is that fossil fuel found in the exploration phase will remain untapped.

Clearing the way to extraction is the fundamental assumption made by issuing this exploration DEIS, and as such it is the gateway to rapid expansion of oil and gas operations in the Arctic – the impacts of which will make the proposed exploration impacts in the DEIS pale.

But there are those who argue that securing domestic energy supplies (and the millions of jobs that the American Petroleum Industry is promising us) will be worth the risks. Unfortunately the cost is extremely high. This is not just the cost to the environment, nor the cost of tax subsidies we give to the oil industry, nor the individual costs we all bear every time we drive our cars to the pump. The ultimate cost is the response of our planet to climate change. The impacts of this are most apparent is in the Arctic – with a second irony being that the receding Arctic ice cap induced by climate change is exposing ever more of the deadly treasure.

Time and time again, by way of systematic justifications of some environmental compromise or other we have been eroding the environmental health of the very habitat that we depend on for our own life support. This is evidenced by the continuous acceleration of species extinctions world-wide. This trend points to the fact that soon enough humans will find ourselves near the top of the “endangered” list – unless we begin to make broad systematic changes in the way we engage with our limited planetary habitat. Drilling in the Arctic is a bad way to start.

BBC Focus on Sounds of the Sea

Yesterday BBC News put out a feature article on ocean acoustics. I suspect that this is really making the rounds because many folks have brought it to our attention. For good reason too, as it includes some great embedded sounds, references to other useful resources, and a couple of conversations with folks in the field, such as Chris Clark with Cornell Ornithology Lab, and Michel Andre whose “Listening to Deep Ocean” we covered in a January 2011 Newsletter.

It is encouraging that ocean bioacoustics is increasingly becoming “main-stream,” particularly in light of the fact that the reach of human noise is ever saturating into further reaches of the sea – requiring all of us to be better informed about how marine animals use their acoustic habitat, and how human noise is transforming it.

National Ocean Policy released today for public review!

Today the National Ocean Council released their Draft Implementation Plan for a National Ocean Policy. This is fabulous news because the US has never had a comprehensive ocean management plan, we have just been tangled in a web of agencies each “managing” their own areas of concern – regional fisheries councils, Department of Transportation, Minerals Management, US Navy, the Coast Guard, State and Tribal agencies, the Energy Department, Marine Mammal Commission, etc., etc., etc….

The urgent call for a comprehensive ocean management plan went out almost a decade ago in 2002 with the Pew Ocean Commission report. A bit over a year later the call was again made by the US Commission on Ocean Policy. The importance of the reports lead Congress to craft complimentary ocean policy acts with Senator Barbara Boxer’s “National Ocean Protection Act” (NOPA 2005) and Rep. Sam Farr’s “Oceans 21” (2006).

The Bush administration wasn’t really big on conservation bills so while Oceans 21 was passed in the House, NOPA didn’t get out of committee. Thus it was with considerable delight for me when the newly elected Obama Administration ushered in an Interagency Task Force to come up with a comprehensive National Ocean Policy. The document released today was a product of the taskforce’s work – including hearing thousands of public comments, and reading thousands of written recommendations.

I have not yet had a chance to dig in and read the draft, but the stated objective of reconciling all national ocean interests to “be considered collectively and managed comprehensively and collaboratively” sounds like a breath of fresh air. It will be easier to assure environmental compliance, and much easier for ocean industries and other stakeholders to tailor their activities under a single comprehensive policy rather than having to appeal an array of uncoordinated regulatory agencies for approvals on their various enterprises.

What is not to like about reconciling and streamlining ocean policy? Unfortunately you will need to brace yourself for the clamor, hue, and cry of the Oilmen and their minions who will bellow about a “job-killing government power grab.” They prefer the tattered regulatory fabric that has made possible the offshore dead zones, regional fisheries crashes, the disappearing wetlands, and yes, the Deepwater Horizon oil spill.

It’s easier for big industry to game a system that is a confused mess of conflicting fiefdoms. A coordinated interagency ocean policy is more efficient, more sensible, and will be easier to drive toward a sustainable set of complimentary policies – something apparently the Oilmen don’t want.

We’ll review the document and let you know how we can all support the implementation of this long-awaited sea change in US National ocean management.

Nancy Sutley, chair of the Council on Environmental Quality Thad Allen, Commandant of the U.S. Coast Guard, Dr. Jane Lubchenco, administrator for the National Oceanic and Atmospheric Association, second right, and Deputy Secretary of the Interior David Hayes (AP Photo/Al Grillo)

Nancy Sutley, chair of the Council on Environmental Quality Thad Allen, Commandant of the U.S. Coast Guard, Dr. Jane Lubchenco, administrator for the National Oceanic and Atmospheric Association, second right, and Deputy Secretary of the Interior David Hayes (AP Photo/Al Grillo)

Some good news in improving technologies!

Perhaps one of the more salient benefits of our work on ocean noise pollution is that unlike solid and chemical pollution, when the noise goes away, it is gone. This gives us reasons for optimism, particularly as we see efforts to improve technologies and practices by a broadening base of ocean stakeholders.

The first inkling that this could happen occurred a few years back when the United Nations International Maritime Organization (IMO) issued guidelines for the quieting of ocean vessels.

Just this year the “International Quiet Ocean Experiment” brought together scientists and stakeholders to craft a cooperative plan for understanding and mitigating the impacts of human generated noise in the ocean.

Bolt E Source Airgun

Bolt Airgun

And just this month three items came across the boards. An article in Sea Technology about Ultra Electronics Sonar Systems developments of a biomimetic sonar that uses biologically derived signals instead of synthetic or digital signals. The article examines the relative effectiveness of sperm whale echolocation clicks against synthetic signals, but it also suggests that animals would be less threatened by signals that are “natural sounding” and thus less likely to respond negatively.

Seismic Survey

Seismic Survey Array

In the same issue there is another article about the benefits of using continuous sonar signals as opposed to periodic blasts. Typical surveillance and navigation sonars kick out a blast or “ping” and waits for an echo to return off of a target. By using some advanced integration techniques the continuously active sonar can lock on to a target and track it using an equivalent amount of energy but spread over time – allowing for a decreased source level and potentially less impacts on marine life.

The third piece coming across my desk was in a local newsletter from Norwalk CT, where the seismic airgun manufacture Bolt Technologies is collaborating with Schlumberger on limiting the bandwidth and thus quieting down the collateral noise from seismic airguns. In an ideal setting the seismic signals would sound less like “bangs” and more like waves crashing, which again sounds more “natural” and should also decrease the impacts on marine life.

I spoke with John Andros with Bolt today, and while the actual product is not ready for prime time yet, they wanted to announce the project and the collaboration.

It is nice to know that some big stakeholders are taking this noise issue to heart. If we continue to move forward, pernicious ocean noise pollution could end up being “a thing of the past.”

The Arctic is on Everybody’s Sonar Lately

Last week we attended an Acoustic Society conference in San Diego. This time I didn’t deliver a paper so it was mostly a reconnaissance trip – both to catch up with colleagues and to introduce Gwynn, our Digital Assets Manager to the field.

It is not a surprise that many of the bioacoustic papers that were presented involved the Arctic – both in terms of the acoustic ecology and habitat assessment, and in learning more about the animals in the area.

Map of polar ice melt back

Map of polar ice melt

As the “ground zero” for global warming, the Arctic is changing extremely fast. Due to accelerated melt-back of the ice-cap entire expanses of the sea are being exposed to daylight which may not have seen the sun since the late Miocene period (over five million years ago). We all know that this is distressing the Polar Bears, but it is also threatening the Ribbon, Ringed, and Bearded seals, which live exclusively on sea ice.

Sound recordings are being made documenting animal vocalizations, baseline ambient noise, and the rise in human-generated noise. New sounds are being discovered, and new impacts are being noticed.

Ringed Seal: Photo by National Geographic

Ringed Seal: Photo by National Geographic

And this is none too soon.

This last summer Shell Oil was cleared to drill three exploratory wells in the Beaufort Sea, and just last Thursday the Department of Interior released a five year offshore drilling plan that includes opening up more leases in the Arctic.

Additionally, the National Marine Fisheries Service (NMFS) will soon be releasing the Draft Environmental Impact Statement for their five year Arctic plan for public comments. Given that the petroleum industry has been pushing to get their pipes in the Arctic waters we expect that there will be much to comment on.

Ribbon Seal: Exploratorium

Ribbon Seal: Photo by Exploratorium

We have been anticipating this and spent a good amount of time this last year with Dave Aplin of WWF, Michael Jasny of NRDC, and the good folks at Bean Creativedeveloping a highly featured and interactive website focused on the impacts of offshore oil industry noise on Arctic habitats.

We’ll be launching this in the next few weeks to get everyone up to speed on the issues so that we can all provide focused and informed critiques of the NMFS plan.

Stay tuned; given the voracious appetite of the Oil Men we’ll need “all hands on deck” to protect the Arctic from their oily (and noisy) assaults.

Throwing Precaution to the Wind – and the Waves

Wave Energy by Ocean PowerLtd

Wave Energy - Courtesy of Ocean Power Ltd.

A recent IBM press release on an ocean noise monitoring project caught the attention of Forbes and other press this week because of a bit of an ironic twist: Our lack of precaution in developing earlier energy technologies – fossil fuel and nuclear, has sensitized us to potential problems in advancing new sustainable technologies like wind and wave energy.

It is never too late to adopt precaution. The concerns are quite real that noise generated by the installation and operation of thousands of wind turbines or wave and tidal harvesting systems across large areas of the ocean will have habitat impacts. Any energy development deployed in these large scales will. It remains to be heard what the impacts are and if there will be easy mitigation strategies should we find the artifacts of these technologies agonistic to marine life.

Video Link: Pelagis Wind Farm

Though what I find doubly ironic is that we know the earlier energy technologies are killing us – by way of intractable and persistent pollution, or by way of climate change; nonetheless we are casting all precaution to the wind by opening up new and reckless sources of fossil fuel in the Arctic, the Marcellus Shale, and the Canadian Tar Sands (for example). Meanwhile we are cautiously moving ahead on technologies made vital by our very lack of precaution in earlier energy technologies.

2010-03-01-TarSandsDestruction_Web

Tar Sands

I‘m not suggesting that we shouldn’t throw caution to the wind; but while were at it we should throw caution to oil and gas as well.

A little deeper into the International Quiet Ocean Experiment.

 

The 2011 Internat

Subsea oiloperations in West Africa

ional Quiet Ocean Experiment (IQOE) brought together leading scientists and researchers [download] to dig deeper into the issue of human generated noise pollution with the objective of determining what we know, what needs to be known, how we should evaluate the field of impacts, and how we should find out what we don’t know.

As in any conference of this type there were plenary sessions speaking about the various aspects of the field with break-out groups to work on the specific topics to meet the objective.

Very much like the fluid boundaries of the ocean there were a lot of overlaps between the sessions, but the descriptions are:

1. Observing Systems, including technology and equipment – which looked at the varied ocean observing systems [download] currently in place with a mind to understand capacity, technologies, and collaborations.

2. Scientific knowledge needed for industry and regulators – evaluating what we do and don’t know, and what we should know about how to qualify and quantify noise and its biological impacts.

3. Ocean Soundscapes – what are they, what significance do they have, and how are they qualified and discussed in useful terms?

4. Designing research relating soundscapes to effects on organisms – are there quantifiable soundscape interactions that reveal the organism and population level relationships to noise?

5. Experimental approaches to understanding responses to organisms to specific sources – what types of experiments can be conducted to clarify the immediate-to-long-term impacts of noise on marine life.

I participated in session two, but wanted to peer into session five. Session three and session four overlapped differently than the way four and five did.

In the end we all managed to sort out and focus our groups, but I suspect that the final document may read more like Marcel Proust than an operations manual. Although I do believe that the document will provide meaningful guidance on how we need to understand, frame, and address the problem of human generated noise pollution in the sea.

xkcd.com -  "The Sea"

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