Sea otters don’t eat algae. And yet, their diet influences the abundance of seaweed. How? Indirectly. Sea otters eating sea urchins (spiky animals in the same class as sea stars) eating kelp has become a textbook example of a trophic cascade, and Serendipity is a first-hand account by ecologist James A. Estes of how this happened. A trophic cascade refers to the indirect effects that ripple through a food web as a result of, for example, a predator consuming its prey. Simultaneously, the book is a searingly open account of how science is done, how ideas change, and how fortuitous events can suddenly send your research programme off in a whole new direction.
American author Paul Greenberg has written two previous books about (eating) fish (American Catch: The Fight for Our Local Seafood and Four Fish: A Journey from the Ocean to Your Plate), so he is no stranger to the rather, errr, fishy topic of omega-3 fatty acid supplements. His new book, The Omega Principle, is much more than just a critique of the supplement industry though. This engagingly written reportage digs far deeper, asking where this oil comes from, and reports on that vast segment of the global fishing industry known as the reduction industry, and a food system out of whack with our needs.
Orcas or killer whales have been at the centre of a swirling controversy for decades. Popular attractions in aquaria, their plight there has been highlighted in recent books and documentaries, further strengthening opposition to keeping cetaceans (i.e. whales, dolphins, and porpoises) in captivity. However, as Jason M. Colby meticulously documents in this book, there is a cruel irony at play here: this very practice of captivity is what raised our environmental awareness in the first place.
Krill is one of those enigmatic invertebrate groups that feeds whole ocean ecosystems but remains itself little known. Even to a biologist such as myself (who has studied fish for crying out loud!), these critters are largely a set of question marks. I mean they are crustaceans, swim in the sea, are numerous and… oh look, a blue whale!
If I asked you to name the most endangered cetacean species, I doubt the vaquita would come to mind. You might mention the baiji, the dolphin living in China’s Yangtze river, but alas, no living members of this species have been seen for years, despite intense search efforts, and the species is presumed extinct. Unfortunately, the vaquita seems to be next in line. Biologist Brooke Bessesen here tells its sad story, revealing the complex world of species conservation.
Brian Fagan is a celebrated archaeologist and author who has written many books on the topic of environmental history. Several of these sit on my shelves, though I admit this is the first book by his hand that I have read. With Fishing, Fagan presents a deep history of fishing from the time of our human ancestors up to the present day, highlighting its overlooked role in the history of human civilization. His story spans the globe and pieces together a fragmented and complicated puzzle.
It has become cliché to say that we know more about the surface of Mars than we do about the depths of our oceans, inaccessible as they are to us landlubbers. Nevertheless, technological advances have allowed us to discover more and more about the denizens of the deep. Anyone who has watched Blue Planet II or similar recent documentaries can testify to the bizarre and wonderful life forms that can be found there.
If there is one group of animals that Steven Spielberg has not done a favour, it must be sharks. Already feared as a dangerous predator in an environment where humans are not in their element the 1975 movie Jaws drove this fear to stratospheric heights and painted a portrait of these fish as ruthless man-eating monsters. Browse any selection of books on sharks, and you’re likely to see photos of a breaching great white, jaws agape. Many people are not happy with this Jaws effect (see for example Lindsay Abrams’s post on Salon or Marc Lapadula’s piece on Screenprism), and this lingering fear even affects policymakers (see Christopher Neff’s article in the Australian Journal of Political Science). Tobey Curtis provides an interesting counter note to this sentiment on The Fisheries Blog, also pointing out how – ironically – Peter Benchley, author of the book on which Spielberg based his movie, was actually an advocate for shark conservation (see his book Shark Trouble). As a side-note, shark attacks have happened for as long as human have entered the sea, though have long been poorly documented – Richard Fernicola’s Twelve Days of Terror: Inside the Shocking 1916 New Jersey Shark Attacks is a bit of an exception.
This, by way of a short introduction, brings us to the current book: Chapman’s Shark Attacks. The problem with shark attacks is that they are a bit like plane crashes: low-probability, high-impact events. You’re not likely to experience either, but when you do, the results can be disastrous. And thus we fear both flying and sharks.
This book presents a historical analysis of overfishing, following up on her 2012 book All the Fish in the Sea: Maximum Sustainable Yield and the Failure of Fisheries Management. Though many reviews have been written on overfishing, and everyone agrees that too many fishing boats have been built, Finley contends that the question is never asked who built these boats in the first place. Her analysis aims to show that government policies, especially during the Cold War (1946-1990), have been responsible, with subsidies for the fishing industry being a proxy to attain other goals. As the opening sentence puts it: fishing has always been about more than just catching fish. The US-side of the story is scrutinised most intensely, though developments in other nations are covered at length.