Category: Uncategorized

Our speaking dogs

A great follow-on to Marc Bekoff’s essay.

Yesterday’s post was the concluding part of Professor Bekoff’s essay about the world of the dog’s mind. (Part One is here.)

I do hope you all read the essay because it revealed just how complex and wonderful is the brain of man’s oldest friend.

A couple of week’s ago, the UK Daily Mail newspaper published an item with the heading of: What’s your dog trying to tell YOU? Scientists discover animals’ bark can reveal whether it is scared or lonely…and can even be used to tell its gender and age.

This is how the article opened:

Ever wondered what your dog’s trying to tell you with its bark? Well, now there is a computer program able to do just that – and you’d be surprised at just what your pet is able to communicate.

Scientists developed the program after discovering dogs aren’t just trying to attract attention, or scaring off intruders when they bark.

Amazingly, the bark could also let you know the gender and age of your pet – as well as whether it is scared, happy or even lonely.

The Daily Mail quoted a very similar article that appeared in The Independent newspaper on the 29th May. The Independent article included this:

A dog bark may sound like one loud, irritating racket but scientists have discovered that they actually give away information about the animal.

Researchers have developed a computer program which can determine the sex and age of a dog through its bark – a development they say has the potential to help vets diagnose pets.

Scientists analysed 800 barks recorded from eight dogs in seven different situations and developed complex algorithms that were able to predict the gender, age and context of the barker.

The researchers said “canine communication” has been heavily studied over the past decade. However, most of the research has focused on studying how dogs understand human communication, such as hand gestures and voice recognition. This is the first time that the sex and age of domestic dogs have been predicted with the help of sound analysis, they said.

Of the two articles, the one in The Independent seems easiest on the eye so I recommend you read it in full if the subject piques your interest. However, The Daily Mail did include the following video:

They are such remarkable animals!

A repeat for today.

Apologies, just ran out of time to write a new blog post for today.

So going to repost what has been a top favourite of readers for nearly two years.

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Remembering that Monday, 22nd April is Earth day, 2013. Like many others, I subscribe to Mother Nature Network. Recently published on MNN were twelve stunningly beautiful photographs.  There are reproduced below, hopefully without infringing any copyrights.  I just wanted to share them with readers of Learning from Dogs ahead of next Monday.

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Earth Day photos: Celebrating the beauty of our planet

From the rolling hills of Tuscany to the surreal glacial formations of Patagonia, here are 12 stunning photos showcasing the diverse collection of landscapes found across the planet. By: Catie Leary Fri, Apr 19 2013 at 11:40 AM

Horseshoe Bend, Glen Canyon, Arizona, U.S.
Horseshoe Bend, Glen Canyon, Arizona, U.S.

 Photo: poorpoor/Flick

Snæfellsnes-og Hnappadalssýsla, Iceland
Snæfellsnes-og Hnappadalssýsla, Iceland

Photo: Greg Annandale/Flick

Hamilton Pool, Austin, Texas, U.S.
Hamilton Pool, Austin, Texas, U.S.

Photo: Stuck in Customs/Flickr

Glacier Grey, Torres del Paine National Park, Chile
Glacier Grey, Torres del Paine National Park, Chile

Photo: Dietmar Temps/Flickr

Pansarine, Tuscany, Italy
Pansarine, Tuscany, Italy

Photo: hippydreams/Flickr

Muir Woods, California, U.S.
Muir Woods, California, U.S.

Photo: kern.justin/Flickr

Minnehaha Falls, Minnesota, U.S.
Minnehaha Falls, Minnesota, U.S.

Photo: Mary JI/Flickr

Mount Blanc, France
Mount Blanc, France

Photo: OneEighteen/Flickr

Star Trails, Rio Negro, Argentina
Star Trails, Rio Negro, Argentina

Photo: lrargerich/Flickr

Sicily, Italy
Sicily, Italy

Photo: gnuckx/Flickr

Tereia Beach, Maupiti, Leeward Islands
Tereia Beach, Maupiti, Leeward Islands

Photo: SF Brit/Flickr

Namib Desert, Namibia
Namib Desert, Namibia

Photo: mariusz kluzniak/Flickr

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So you all have a great week-end, wherever you are in the world, and do something, however small, for the one and only planet that nourishes all the life of the world. Planet Earth 1

The book! Part Four: The importance of hope.

The night is always darkest before the dawn.

That very well-know saying rings in my ears the word: hope. Hope! What a short, little word that carries on its back, so to speak, so much promise, so many reasons for staying with it, whatever ‘it’ might mean at any particular moment.

For countless times for countless numbers of people, the importance of hope has been incalculable! But first let’s dip into the dictionary as a way of clearly understanding the word.

Hope: as a noun, in part: “the feeling that what is wanted can be had or that events will turn out for the best”; as a verb, in part: “to look forward to with desire and reasonable confidence”.

Yes, there are other definitions of the word ‘hope’; both as a noun and an adjective. But I selected the two above because they resonated with me and past experiences. Or more accurately, a past experience. My prelude to another story from my past that seemed an appropriate way of opening this chapter; this chapter on hope.

In 1986 I had the opportunity to take a few years off. Off from the working life, that is. I had started my own company in 1978 after eight years of being a salesman for the Office Products Division of IBM UK. In 1986, the successful sale of my company meant that for a while I could go and play. By chance, I went on a vacation to Larnaca on the Island of Cyprus; Larnaca being on the Greek side of what was a divided island(and still is!) between Greece and Turkey.

Larnaca struck me as a lovely place on a lovely island in the Eastern part of the Mediterranean Sea. Again, quite by chance, one day during my vacation, when strolling around Larnaca Marina, I noticed a yacht with a For Sale notice on the yacht’s pulpit. The yacht, named Songbird of Kent, was a Tradewind 33, a type that I had heard about previously from reading yachting magazines. I vaguely recalled that the type had been designed in the UK by John Rock, himself an experienced deep-water yachtsman, for the purpose of serious ocean sailing and that many Tradewinds had completed vast ocean crossings.

I was still looking at the yacht, lost in some dream about sailing the seas, when a call from a man who had just come up from the cabin caught my attention. He had spotted me looking at the yacht.

Hi, my name is Ken and I’m the owner of Songbird. Did you want to come onboard and have a look around?” I couldn’t resist!

It transpired that Ken, and Betty his wife, an English couple, had been living on Songbird for some years, cruising the Mediterranean each Summer, and now wanted to return to England.
It was obvious that Songbird had been cared for in every possible way and that the yacht was offered for sale in a manner that meant she could become my permanent new home with little or no effort on my behalf.
Three hours later Ken and Betty and yours truly had agreed terms for the sale of Songbird of Kent. One of those spur of the moment things that we do in our lives that, so often, make being alive such a reward.

I should explain that as a younger man (I was 42 when I agreed to buy Songbird) I had devoured the books written by such round-the-world solo sailors as Francis Chichester and Joshua Slocum and others and harboured this silly, naive dream of one day doing a solo transatlantic crossing. Later on in life, when living in Wivenhoe in Essex, I bought my first yacht but never achieved anything more than local coastal sailing and a couple of overnight sailings to Holland; all with others I should hasten to add – never solo! However, I knew for sure that if there was one yacht that was perfect for open ocean sailing it was the Tradewind.

Thus it wasn’t long before my home in Great Horkesley, near Colchester, had been sold and I was adjusting to a new life as a ‘live aboard yachtie’ out in Cyprus.

I loved living in Larnaca for a whole bundle of reasons that I won’t go into here. Except one! That was that in my years of living and working near Colchester, which was where my business was based, I had been introduced to gliding and eventually had ended up becoming a gliding instructor. So imagine my delight at finding that there was an active gliding club on a British ex-military airfield thirty minutes away from Larnaca. It was not long before I was fully back to gliding.

One day, I was doing gliding experience flights for some visitors. Early in the afternoon, up came a quietly spoken Englishman who wanted to get an idea of what it was like to fly in a glider. Les, for that was his name, settled himself in, I checked his straps were secure, pointed out the canopy release and jumped into the seat behind him, and within moments we were airborne.

Later on, when back on the ground and sitting to one side of the old runway, Les and I started chatting about our backgrounds and what had brought each of us to Larnaca. I learned that Les was not only Les Powles, the famous solo sailor, but that he was living on board his yacht, Solitaire, right here in Larnaca Marina.

Over the following days, often with a beer or two in our hands, I heard Les’ tales about him having been in his 50s when he built Solitaire, with little prior knowledge of boatbuilding. That he had just eight hours of sailing experience when he decided to sail solo around the world. That remarkably, he had made it across the Atlantic, albeit discovering that his navigation skills didn’t quite match up to his boatbuilding abilities. This translating to his first landfall being the coast of Brazil, a 100 miles south of (and a different hemisphere) the Barbados he had been aiming for!

I listened for hours, in utter rapture of what Les had achieved. This quiet, unpretentious man that had achieved so much. Including how after solo circumnavigation number one, Les ended up completing three solo circumnavigations, all of them full of incidents. Particularly, the last one, with Les being given up for dead when he hadn’t been heard from for over four months. When eventually he sailed up the Lymington River in Hampshire, in a skeletal state, his arrival caused a media frenzy. Lymington Marina subsequently gave him a free berth for life. Les’ boat had been damaged in a storm, he had lost all communications and had virtually run out of food by the time he made it back to England.Oh, and Les was 70 at the time!

It’s OK readers, I haven’t forgotten I was promising you an anecdote on the subject of hope! Stay with me a little longer; it’s coming!

At one point, Les asked me about my own sailing ambitions. I remarked that I had this tired old idea of a solo sailing across the Atlantic.

Have you done any solo sailing?”, Les asked.

I replied, “At the start of most Summers, I sail alone from Larnaca across to the Turkish coast to meet up with family and friends who want to cruise along with me.

Continuing, “Generally I head for Alanya or a little further along the Turkish coast; to Antalya. It takes me two or three days to get there non-stop, most often with me going west-about Cyprus, and then straight up to Turkey. But I am embarrassed to admit that I hate both that trip, and the return solo trip at the end of the Summer. Detest would be a better word than hate.

Pausing before adding a moment later, “If I can’t stomach solo sailing for three days then there’s no chance, no chance at all, that I could sail solo across the Atlantic ocean.

It was then that Les said something both profound and deeply inspiring.

Paul, guess what! The first three days of being alone are just as terrible for me, too. Indeed, I have never met a solo sailor who doesn’t say the same. Those early days of adjusting to your new world, your new world of being alone out on the ocean, are the worst. But never lose hope that from some point around the third or fourth day, you will have worked through that transition and found an unbelievable state of mind; a freedom of mind that has no equal.

Years later, with Les’ words still ringing in my ears, I set out from Gibraltar for the Westward crossing of the Atlantic and lived the truth of Les’ prediction.

Sorry if that turned into a longer trip down memory lane than you were anticipating. However, I knew of no better way of telling you about how I learned the real meaning of hope, courtesy of dear Les.

Now a purely anecdotal tale on gaining the meaning of hope would be no way to end this chapter. We need to seek a professional view as well.

Scott Barry Kaufman is the Scientific Director of The Imagination Institute in the Positive Psychology Center at the University of Pennsylvania. (See footnote)

Back in December of 2011 he was the author of an essay published in the journal Psychology Today. The essay was called: The Will and Ways of Hope, with the subheading: Hope involves the will to get there, and different ways to get there.

It opened:

Talent, skill, ability — whatever you want to call it — will not get you there. Sure, it helps. But a wealth of psychological research over the past few decades shows loud and clear that it’s the psychological vehicles that really get you there. You can have the best engine in the world, but if you can’t be bothered to drive it, you won’t get anywhere.

Psychologists have proposed lots of different vehicles over the years. Grit, Conscientiousness, self-efficacy, optimism, passion, inspiration, etc. They are all important. One vehicle, however, is particularly undervalued and underappreciated in psychology and society. That’s hope.

Professor Kaufman went on to say that, “Put simply: hope involves the will to get there, and different ways to get there.” It struck me that those words seemed to resonate strongly with the multi-stage process of change that was covered in the previous chapter: The process of change.

The good Professor then adding:

Why is hope important? Well, life is difficult. There are many obstacles. Having goals is not enough. One has to keep getting closer to those goals, amidst all the inevitable twists and turns of life. Hope allows people to approach problems with a mindset and strategy-set suitable to success, thereby increasing the chances they will actually accomplish their goals.

Thus what Professor Kaufman seemed to be saying, well to my ears anyway, was that hope was not some wishy-washy emotion, some vaguely defined way of giving oneself a good talking to but “a dynamic cognitive motivational system” to use his words. That people who have clear goals in their lives, especially goals that demand learning, that in themselves are related positively to success, whatever success means specifically to an individual, that those goals are critically dependent on hope.

More from Kaufman:

Under this conceptualization of hope, emotions follow cognitions, not the other way round. Hope-related cognitions are important. Hope leads to learning goals, which are conducive to growth and improvement. People with learning goals are actively engaged in their learning, constantly planning strategies to meet their goals, and monitoring their progress to stay on track.

While reading Professor Kaufman’s essay, I found myself quietly wondering about where hope fitted in with other psychological attitudes, such as optimism and self-confidence. I didn’t have to wonder for much longer because, towards the end of the Professor’s essay, he specifically addresses my wonderings:

Hope can be distinguished from other psychological vehicles, such as self-efficacy and optimism. Self-efficacy refers to your belief that you can master a domain. Optimism refers to a general expectation that it’ll all just ‘be alright’. Hope, self-efficacy, and optimism are all incredibly important expectancies and contribute to the attainment of goals. Even though they all involve expectations about the future, they are subtly, and importantly, different from each other. People with self-efficacy expect that they will master a domain. Optimism involves a positive expectancy for future outcomes without regard for one’s personal control over the outcome. In contrast to both self-efficacy and optimism, people with hope have both the will and the pathways and strategies necessary to achieve their goals.

For the first time in many decades of reflection and introspection into aspects of success, motivation and achievement, I saw the sense of seeing hope in a two-dimensional manner: the will and the ways! Fascinating!

Reinforced so clearly in Professor Kaufman’s closing words:

We like to think that current ability is the best predictor of future success. We’ve built up the importance of existing ability because the testing and gating mechanisms are so well established to suit this belief. Important psychological studies show that ability is important, but it’s the vehicles that actually get people where they want to go. Oftentimes, the vehicles even help you build up that ability you never thought you had. And hope — with its will and ways — is one of the most important vehicles of them all.

Is there a connection between learning the “first three days are the worst’ from dear Les Powles and the academic eminence of Professor Scott Barry Kaufman?

I think so. For one could interpret Les’ advice about working through that initial three days at sea as containing both the Will – I am determined to keep going through those transitional days – and the Way – one can only achieve the peace of mind of being alone at sea by sailing onwards for three or four days.

I cannot close this better than by quoting Aristotle, “Hope is a waking dream.”

2,361 words Copyright © 2014 Paul Handover

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Footnote: Scott Barry Kaufman is Scientific Director of The Imagination Institute in the Positive Psychology Center at the University of Pennsylvania. Kaufman investigates the development and measurement of imagination, and the many paths to greatness. He has six books, including Ungifted: Intelligence Redefined and The Philosophy of Creativity(with Elliot Samuel Paul). Kaufman is also co-founder of The Creativity Post. Kaufman completed his doctorate in cognitive psychology from Yale University in 2009 and received his masters degree in experimental psychology from Cambridge University in 2005, where he was a Gates Cambridge Scholar.

Space for Nature

Last day of September

I was mulling over the fact that tomorrow sees the start of October and, inevitably, pondering what sort of winter we are in for. At the same time, I was reflecting on how beautiful this last month has been.  Wonderful ‘easy-on-the-body’ temperatures, an inch or more of much-needed rain, wonderful Autumn colours; all being shared for the last ten days with our guests: Reggie and Chris.

I was unsure what to write about to reflect my thoughts and was then saved by the September Digest from Transition Culture back in the old country.  I started to read it and immediately wanted to share it with you; dear reader.

First, to set the tone, here is a photograph taken just before I sat down to write today’s post.

Space for Nature - all around us!
Space for Nature – all around us!

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Transitioners’ Digest (September 2014)

This month we have been exploring the theme of “Making Space for Nature” from a wide range of different angles. We started with an editorial piece which argued that one of the key things that digest2nature can bring our work doing Transition is a sense of wonder. Something to do with glowworms apparently. We grabbed George Monbiot before he went on stage and talked about his book Feral and the concept of rewilding.

Writer and founder of the charity Write to Freedom, Caspar Walsh, talked about the vital role nature can play in the healing of young men. “She, it, whatever it is”, he told us, “works on them and softens them up so I don’t have to do all the work”. Ecopsychologist Mary-Jayne Rust talked about the impacts being separated from nature can have on us, and the benefits we get from making space for it. “When was the last time you heard of an activist going on a pilgrimage for eight months?” she asked.

Isabel Carlisle introduced us to Community Charters, and the potential they have for making space for nature at the community scale. Richard Louv, author of Last Child in the Woods, and of the theory of Nature Deficit Disorder, talked to us via Skype. “If we’re not careful”, he told us, “environmentalists and others who care about the future of nature will carry nature in their briefcases, not in their hearts”. Mike Jones, who builds natural play spaces for kids, talked about the need to make space for “the primodial nature of kids”.

Sept14

Aniol Esteban of New Economics Foundation reflected on why we need to make space for nature in economics. He told us:

Nature contributes to our mental health. It delivers mental health benefits and physical health benefits. It delivers a wide range of societal benefits. It contributes to our education. It can help reduce levels of crime. It can help urban regeneration. There is a huge range of areas and ways in which nature contributes to our wellbeing – individual wellbeing and collective wellbeing.

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David Nobbs

TootingHayley Spann, one of the participants in One Year in Transition, reflected on “what nature taught me”. We had a review of the first mainstream novel about Transition, The Second Life of Sally Mottram by David Nobbs (see right). We also talked to the author about where the idea came from, and what makes a good story. We had a recipe for “Transition Plum and Almond Cake”. Mark Watson reflected on the importance of ‘Making Space for Flowers’, and the many ways in which his Transition initiatives, Sustainable Bungay, create opportunities for people to encounter and benefit from nature.

Rob Hopkins reflected on how different our approach to managing water and drought would be if we took forests as the model on which we based it. He also responded to a critique of Transition by Ted Trainer and explored why the language we use to talk about this stuff really matters. He also went on the Peoples’ Climate March in London and reflected on how that was.

We heard from Transition initiatives about their experience of making space for nature in what they do. Hilary Jennings of Transition Town Tooting talked about the Tooting Foodival. Chris Bird wrote about the Transition Homes initiative in Totnes. Cara Naden discussed the many ways in which Transition Langport make space for nature. “I believe we all have an inherent bond with nature”, she wrote. “It makes us feel happy and healthy and makes us feel we are doing something positive and worthwhile for the benefit of wildlife, each other and ourselves”.

A very rich and thought-provoking month we hope you’ll agree. Our theme for October will be Transition and development. We hope you enjoy that too.

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(Note: there were many links in the original digest so do please check there as well.)

Can’t resist a couple more pictures from home to underline how we feel so strongly about having space for nature.

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A misty October morning from a year ago.
A misty October morning from a year ago.

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Trust between deer and Jean.
This is what making space is all about!

Let’s all have a great month of October embracing the natural world around us howsoever it can be done.

Food – early green shoots.

Excuse the pun! But there are signs of change.

Yesterday’s post spelled out in letters bold, so to speak, the madness of our present relationship with food.  As in the blindness of the vast majority of consumers when it comes to our consumption of food.  Such as the blindness of Americans, for example!  Presuming that few are aware that feeding all of us Americans accounts for about 15% of US energy use, [1] and the average food item travels more than 5,000 miles from farm to fork. [2]

So it’s encouraging to see that there are signs of hope.

For example, in the UK, Martin Crawford has a wealth of information about forest gardening on his website The Forest Garden.

Welcome to the Forest Garden.

Inspired by the effortless abundance in nature we believe that forest gardens are the best way to produce local wholesome organic food, timber products and a myriad of other natural non-wood items. Forest gardens, with careful design and management, also improve degraded soils and create wildlife havens, employment and beauty. We love this way of gardening and farming with nature, we hope you do too.

We’ve just started to create the largest Forest Garden site in UK so please check back regularly to see how we’re getting on.

And Martin’s thirteen-minute video on the topic is pure inspiration.

Then in the USA, we see the increasing power of the voice of such organisations as the Post Carbon Institute whose mission statement reads:

Post Carbon Institute provides individuals, communities, businesses, and governments with the resources needed to understand and respond to the interrelated economic, energy, environmental, and equity crises that define the 21st century. We envision a world of resilient communities and re-localized economies that thrive within ecological bounds.

Watch the PCI’s Overview video here.

Still in the USA but much closer to home, indeed just a four-minute drive away, is Sweet Water Farm.

A picture from Sweet Water Farm.
A picture from Sweet Water Farm.

Sweet Water Farm is a small family owned and operated farm located in beautiful Hugo, Oregon near the base of Mt. Sexton. Sam and Denise work the fields with their son Ari and daughter Ivory overseeing the operation. Our mission is to provide healthy food to our community while take care of the place we call home.

Then we have the Southern Oregon Permaculture Institute with more resources for us. And the Siskiyou Permaculture Resources Group. With more for us, I don’t doubt!

So how to leave this?

Firstly, by reminding ourselves of Rebecca Hosking’s Modbury, Devon farm.

Secondly, by reading the article in the UK’s Daily Mail newspaper back in February, 2009. From which I quote:

More than 96 per cent of all the food grown in Britain is reliant on synthetic fertiliser. Without it we’d be in serious trouble.

But without artificial fertiliser there’s not enough nutrients for the crops to grow, and without ploughing there is nothing to aerate the soil. So how can we manage without them?

The answers are in nature. As Charles Darwin pointed out, earthworms have been ploughing and aerating the soil for millions of years. And as for fertilisers, just look at how a forest flourishes: by using the natural fertility created by billions of living microbes, fungi, plants and animals.

“The answers are in nature.”

What better way than that to close today’s post!

References:

[1] Patrick Canning, Ainsley Charles, Sonya Huang, Karen R. Polenske, and Arnold Waters. Energy Use in the US Food System. U.S. Department of Agriculture Economic Research Service. (ERR-94) 39 pp, March 2010.
[2] Christopher Weber and H. Scott Matthews. 2008. Food Miles and the Relative Climate Impacts of Food Choices in the United States Environmental Science and Technology 42: 3508-3513.

The critical value of predators in our wild lands.

The consequences of the reintroduction of wolves to Yellowstone National Park.

I have two people to offer my thanks to for today’s post: Suzann and Ginger.   Both of them within hours of each other sent me an email recommending the following video.  So, without further ado, here is that video.  (Oh, would you believe this.  The video was released on February 13th, 2014 and, at the time of me writing this post, has been viewed 1,453,345 times! Wow!)

Published on Feb 13, 2014

Visit http://sustainableman.org/ to explore the world of sustainability.

For more from George Monbiot, visit http://www.monbiot.com/ and for more on “rewilding” visit http://bit.ly/1hKGemK and/or check out George Monbiot’s book Feral: rewilding the land, the sea and human life: http://amzn.to/1dgdLi9

“When we try to pick out anything by itself, we find it hitched to everything else in the Universe.” – John Muir

When wolves were reintroduced to Yellowstone National Park in the United States after being absent nearly 70 years, the most remarkable “trophic cascade” occurred. What is a trophic cascade and how exactly do wolves change rivers? George Monbiot explains in this movie remix.

Narration from TED: “For more wonder, rewild the world” by George Monbiot. Watch the full talk, here: http://bit.ly/N3m62h

B-Roll Credits:
“Greater Yellowstone Coalition – Wolves” (http://bit.ly/1lK4LaT)
“Wolf Mountain” (http://bit.ly/1hgi6JE)
“Primodial – Yellowstone” (https://vimeo.com/77097538)
“Timelapse: Yellowstone National Park” (http://bit.ly/1kF5axc)
“Yellowstone” (http://bit.ly/1bPI6DM)
“Howling Wolves – Heulende Wölfe” (http://bit.ly/1c2Oidv)
“Fooled by Nature: Beaver Dams” (http://bit.ly/NGgQSU)

Music Credits:
“Unfoldment, Revealment, Evolution, Exposition, Integration, Arson” by Chris Zabriskie (http://bit.ly/1c2uckW)

FAIR USE NOTICE: This video may contain copyrighted material. Such material is made available for educational purposes only. This constitutes a ‘fair use’ of any such copyrighted material as provided for in Title 17 U.S.C. section 106A-117 of the US Copyright Law.

For any concerns or questions, you may contact us athttp://sustainableman.org/contact/

If you want to read more on a general level, then my post on the 11th January, 2014, An echo in the hills! may be worthwhile. It included this from William Ripple, of Oregon State University:

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Top dogs keep ecosystems in order

Many of these large carnivore species are endangered and some are at risk of extinction, either in specific regions or entirely. Ironically, they are vanishing just as we are learning about their important ecological effects, which is what led us to write a new paper in the journal Science to document their role.

From a review of published reports, we singled out seven species that have been studied for their important ecological role and widespread effects, known as trophic cascades. These are the African lion, leopard, Eurasian lynx, cougar, gray wolf, sea otter and dingo.

Based on field research, my Oregon State University co-author Robert Beschta and I documented the impact of cougars and wolves on the regeneration of forest tree stands and riverside vegetation in Yellowstone and other national parks in western North America. Fewer predators, we found, lead to an increase in browsing animals such as deer and elk. More browsing disrupts vegetation, reduces birds and some mammals and changes other parts of the ecosystem. From the actions of the top predator, widespread impacts cascade down the food chain.

Similar effects were found in studies of Eurasian lynx, dingoes, lions and sea otters. For example in Europe, absence of lynx has been closely tied to the abundance of roe deer, red fox and hare. In Australia, the construction of a 3,400-mile dingo-proof fence has enabled scientists to study ecosystems with and without dingoes which are closely related to gray wolves. They found that dingoes control populations of herbivores and exotic red foxes. The suppression of these species by dingoes reduces predation pressure, benefiting plants and smaller native prey.

In some parts of Africa, the decrease of lions and leopards has coincided with a dramatic increase in olive baboons, which threaten crops and livestock. In the waters off southeast Alaska, a decline in sea otters through killer whale predation has led to a rise in sea urchins and loss of kelp beds.

Predators are integral, not expendable

We are now obtaining a deeper appreciation of the impact of large carnivores on ecosystems, a view that can be traced back to the work of landmark ecologist Aldo Leopold. The perception that predators are harmful and deplete fish and wildlife is outdated. Many scientists and wildlife managers now recognise the growing evidence of carnivores’ complex role in ecosystems, and their social and economic benefits. Leopold recognised these relationships, but his observations were ignored for decades after his death in 1948.

op carnivores, at work keeping things in check. Doug Smith
Top carnivores, at work keeping things in check. Doug Smith

Human tolerance of these species is the major issue. Most would agree these animals have an intrinsic right to exist, but additionally they provide economic and ecological services that people value. Among the services documented in other studies are carbon sequestration, restoration of riverside ecosystems, biodiversity and disease control. For example, wolves may limit large herbivore populations, thus decreasing browsing on young trees that sequester carbon when they escape browsing and grow taller. Where large carnivore populations have been restored – such as wolves in Yellowstone or Eurasian lynx in Finland – ecosystems appear to be bouncing back.

I am impressed with how resilient the Yellowstone ecosystem is, and while ecosystem restoration isn’t happening quickly everywhere in this park, it has started. In some cases where vegetation loss has led to soil erosion, for example, full restoration may not be possible in the near term. What is certain is that ecosystems and the elements of them are highly interconnected. The work at Yellowstone and other places shows how species affect each another through different pathways. It’s humbling as a scientist to witness this interconnectedness of nature.

My co-authors and I have called for an international initiative to conserve large carnivores in co-existence with people. This effort could be modelled after a couple of other successful efforts including the Large Carnivore Initiative for Europe, a non-profit scientific group affiliated with the International Union for the Conservation of Nature, and the Global Tiger Initiative which involves all 13 of the tiger-range countries. With more tolerance by humans, we might be able to avoid extinctions. The world would be a scary place without these predators.

William Ripple does not work for, consult to, own shares in or receive funding from any company or organisation that would benefit from this article, and has no relevant affiliations.

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The ConversationMan! We are a strange species at times!

The sounds of life.

Bernie Krause: The voice of the natural world

Not going to do anything other than ask you to watch, or more pertinently listen, to this 14-minute video.

Published on Jul 15, 2013

Bernie Krause has been recording wild soundscapes — the wind in the trees, the chirping of birds, the subtle sounds of insect larvae — for 45 years. In that time, he has seen many environments radically altered by humans, sometimes even by practices thought to be environmentally safe. A surprising look at what we can learn through nature’s symphonies, from the grunting of a sea anemone to the sad calls of a beaver in mourning.

The Wikipedia entry explains that:

Bernie Krause was born in 1938. Somewhat of a musical prodigy, by age 3-1/2 he studied violin and by age 4 classical composition. He performed on a variety of stringed instruments (cello, bass, viola, harp) but fell in love with the guitar. He was disappointed when in 1955 not a single music school to which he applied would accept him with guitar as his primary instrument. Krause went on to work as a studio guitarist on jazz sessions and, occasionally, on early Motown sessions. He also worked as a recording engineer and producer in Ann Arbor while an undergraduate at the University of Michigan. He joined The Weavers in 1963, occupying the position created by co-founder Pete Seeger and stayed with them until they disbanded a year later.

More details here.

Do go across to Bernie Krause’s website Wild Sanctuary if only to listen to the sounds of birds on the ‘home page’!

 

Loss of service

Crumbling edge techonology!

At around 11am local Pacific time today (Monday) we lost our internet connection at home. (I have borrowed neighbours Dordie and Bill’s connection to publish this.)

The engineers say it could be up to 48 hours before they attend to the issue.

So enjoy a couple of days peace!

Regards to all,

Paul

Finger trouble!

Apologies to all.

For some reason, today’s post, that should have appeared some 6 hours ago, is caught up in a WordPress ‘loop’.

Trying to sort out the issue and hope to have the post, a guest post from Chris Snuggs, published in the next 30 minutes, or less.