"It would be some consolation for the feebleness of our selves and our works if all things should perish as slowly as they come into being; but as it is, increases are of sluggish growth, but the way to ruin is rapid." Lucius Anneaus Seneca, Letters to Lucilius, n. 91

The Seneca Book by Ugo Bardi

Springer: The Frontiers Collection

The Seneca Effect

Why Growth is Slow but Collapse is Rapid

Authors: Bardi, Ugo

Presents wisdom from an ancient Roman Philosopher that you can use today. Explains why technological progress may not prevent societal collapse. Provides a true systems perspective on the widespread phenomenon of collapse. Highlights principles to help us manage, rather than be managed by, the greatest challenges of our times.
The essence of this book can be found in a line written by the ancient Roman Stoic Philosopher Lucius Annaeus Seneca: "Fortune is of sluggish growth, but ruin is rapid". This sentence summarizes the features of the phenomenon that we call "collapse," which is typically sudden and often unexpected, like the proverbial "house of cards." But why are such collapses so common, and what generates them? Several books have been published on the subject, including the well known "Collapse" by Jared Diamond (2005), "The collapse of complex societies" by Joseph Tainter (1998) and "The Tipping Point," by Malcom Gladwell (2000). Why The Seneca Effect?
This book is an ambitious attempt to pull these various strands together by describing collapse from a multi-disciplinary viewpoint. The reader will discover how collapse is a collective phenomenon that occurs in what we call today "complex systems," with a special emphasis on system dynamics and the concept of "feedback." From this foundation, Bardi applies the theory to real-world systems, from the mechanics of fracture and the collapse of large structures to financial collapses, famines and population collapses, the fall of entire civilzations, and the most dreadful collapse we can imagine: that of the planetary ecosystem generated by overexploitation and climate change. The final objective of the book is to describe a conclusion that the ancient stoic philosophers had already discovered long ago, but that modern system science has rediscovered today. If you want to avoid collapse you need to embrace change, not fight it. Neither a book about doom and gloom nor a cornucopianist's dream, The Seneca Effect goes to the heart of the challenges that we are facing today, helping us to manage our future rather than be managed by it.

Monday, January 19, 2015

A Seneca cliff in the making: African elephants on the brink of extinction

Originally published on "Cassandra's legacy" on Monday, January 19, 2015

The graph above refers to effects of the illegal hunting of African elephants. It is taken from a recent paper by Wittemyer et al.

Once you have given a name to a phenomenon and understood its causes, you can use it as a guide to understanding many other things. So, the concept of the "Seneca Cliff" tells us that the overexploitation of natural resources often leads to an abrupt decline that, often, takes people by surprise. In the case of biological resources, such as fisheries, the decline may be so fast and uncontrollable that it leads to the extinction or to the near extinction of the species being exploited. It has happened, for instance, for whales in 19th century and for the Atlantic cod.

If you keep in mind these historical examples, you can examine other cases and identify possible Seneca cliffs in the making. One such case is the ivory trade from the hunting of African elephants. If you look at the plots (from a recent paper), above, you see that the seized ivory mass has shown a considerable increase starting around 2008. It peaked in 2011, then declined. We can probably take these numbers as a "proxy" for the number of African elephants being killed - which is also visible as the red line in the upper box. 

This is very worrisome, because if killings decline, it may very well be because there are fewer elephants left to kill - just as the landings of the fishing industry tend to decline when the fish stocks are depleted. Considering how abruptly these things go (the "Seneca effect") then we may well be seeing a similar trend in progress for African elephants: that is, the prelude of an abrupt crash in their numbers. Considering that elephants are big and reproduce slowly, that may very well lead to their extinction.

On this subject, the authors of the paper seem to be very worried, too. The title, by itself, says it all: "Illegal killing for ivory drives global decline in African elephants". In the text, we can read, among other things, that:

The population [of African elephants] was subjected to unsustainable rates of illegal killing between 2009 and 2012, escalating from a mean of 0.6% (SD = 0.4%) between 1998 and 2008 to a high of 8% in 2011 (Fig. 1). Annual illegal killing of elephants in the Samburu population during 2009 to 2012 exceeded those of all previous years of monitoring (1998–2008) with an estimated aggregate of 20.8% of the known elephants illegally killed during that 4-yperiod. ... Illegal killing rates were strongly correlated with black market ivory prices in the Samburu ecosystem. ... As a result of this illegal killing, the population currently suffers from few prime-aged males, strongly skewed sex ratios, and social disruption in the form of some collapsed families and increased numbers of orphans (immature elephants without a parent)

Are we going to lose the elephants forever? Right now, we can't say for sure; but when it will be clear that it is happening, it will probably be too late to do something about it. Doesn't that sound familiar? 

No comments:

Post a Comment