Group items tagged

This article highlights the efforts to make Asian Carp, the next big threat to the Great Lakes (and the multi-million dollar fishing and tourism industries there) the next big food hit (or at least big enough to get people to fish them out). After all, as one expert says, "there's a worldwide need for cheap protein, and I think it's one of those things that fit the bill." But I have to say, I'm a little concerned. One, I know this is not a new strategy - people tried to turn garlic mustard into the next major salad ingredient, without much luck. But I think it could end up creating even greater threats in the long run. For example, if the idea is to get rid of the fish, it isn't a sustainable model for a business to follow. Why build a plant for a fish we're trying to get rid of? When the plants are built, the question changes: why get rid of the fish? In Darwin's Nightmare we saw how an invasive fish became a boon and blessing to the local economy. The Midwest is different, but some of the same forces are at play. Second, in my eyes the most legitimate argument against invasive, non-native species is that they don't provide ecosystem function. The ecosystem concept is rooted in relationships that help carry out nutrient/energy flow, etc... and these species don't really relate to others. By giving them a functional role as a food source, we give them a little more function to a species we really care about - us. Again, the plan to actually get rid of them may backfire as their benefits appear to outweigh their costs. The question does remain, is that a bad thing?

Connecting immigration sentiments to the anti-invasive fervor of environmentalists (a stylistic, more than a substantive trick, I think) this writer questions the war against non-native species, citing the dynamic and evershifting nature of, well, "nature." I appreciate the sentiment and the focus more on the function of ecological systems, rather than its ever-shifting make up (species lists being as much a burden to ecological thought as a blessing), but its a hard line to tread when you start picking which non-natives and which natives to battle. Zebra mussels, for example, were cited in the piece as lake-cleaning food sources for many small fish and in turn birds. This is true, most research shows that the zebra mussel is becoming a major food source around the great lakes. But is it an improvement? It is a difference, certainly. From a human perspective, its much worse: even beyond the obvious decimation of fishing industries (note the author says it increases populations of SMALL fish), try walking barefoot on a beach cluttered with the remains of zebra mussels. No fun. Lots of blood. Whole generations forced to wear water shoes where bare feet once sufficed. So, if we're forced into acknowledging that we can't rely on the essences of stable-state ecosystems as our guide to how ecological systems should be, what do we use? And can we (should we?) get past anthropocentrism (maybe I should sacrifice my feet, the fishing industry, and the various non-human populations of organisms getting hit by zebra mussels for the zebra mussels, small fish, and birds) in doing so? This is a big question, and I definitely don't have any great answers. But its worth pondering.

Another reminder that anything like a global fisheries assessment is a complex matter, based on all sorts of assumptions and models.  The upshot: either things are terrible, or they're just not great (e.g., 70 vs. 33 percent of all stocks estimated to be declining). One of the challenges: how extrapolate known longitudinal data on fish stocks to the many others that are less well monitored?

In SOAN249 today we briefly touched upon genetically altered Salmon, I looked into it more tonight--here's what I read. It seems like a crazy idea, like we talked about in class the Salmon are eating and being treated not so much as fish but another species. Fish live in the ocean, and Salmon are carnivorious, the fact that we are feeding them corn and other plant based materials, furthers the absurdity of the idea. Its taking an animal and reconstructing not only the biological make up but reconfiguring the behavioral patterns and 'lifestyle'.

Puzzling headline, no? But truly, this was an important study involving golden shiners (a common minnow), and the conclusions the researchers reached concerned how "uninformed agents can promote democratic outcomes in collective decision problems," or in less technical jargon, how "ignorance can promote democracy." Certainly intriguing in terms of boundary-crossing between the natural and the human sciences! But not without dispute over its relevance to the world of human politics, as noted at the bottom of the article. Relevance to ENVS is clear: we welcome ideas that cross the natural/social sciences, but we subject them to scrutiny too. (And, we worry about ignorance as much as anyone else does.)

A challenge to the idea that vertical farming may be more energy efficient than traditional approaches. Like the debate around local food though, it bothers me that we focus on energy and/or CO2 emissions when we measure environmental impact. In a much bigger picture, I'm not even so sure that another agricultural revolution, like this, is really what's best for the planet in the long run.

Good points all. While the excitement about vertical farms is good for attracting investors, the economic realities of all the systems involved are definitely questionable. That said, the Economist left out some things that are worth mentioning, both for and against the idea. First of all, the use of hydroponics is thrown out pretty willingly and easily, but its hardly simple. For one, you're moving away from the use of soil (and fertilizer, manure, other related mediums) as the primary medium for agricultural production. We are simulatenously just realizing that we don't really know much about soil as a medium. And even with water we have the same problems. The "known unknowns" are pretty great either way, and scale plays in. Most hydroponics (though there are major exceptions) are run by research organizations or universities, which means there is a lot more free and regular support, particularly from the sciences, than most commercial operations will be able to afford. Its much easier, when things go wrong, to have a cadre of free sciences hovering around. As for "you can grow anything in hydroponics", speaking from work I've done with those systems, you can - but good luck with a lot of it. Plus water filtration becomes an issue, though there are biological ways of handling that (even then you're creating a very limited ecosystem - they can get thrown off ridiculously easily). On the other hand, while light inputs are definitely a notable consideration, light science and "light engineering" is making leaps and bounds. So while I'd say issues with light are writing it off just yet, I wouldn't count on that as the everlasting limiting factor. Along with the various spinning, rotating, window side containers there are also various types of windows, "light tunnels", and even the good ol' basic efficient lighting systems and such to consider. And design, rather than technology, can also contribute - several vertical farm designs "stagger" floors to reduce

shading from the building itself. Also, for anyone following alternative agriculture from the technology/commerce/urban ag side, there are two details the Economist got wrong. Sweetwater Organics, featured on NBC a few weeks ago, is already running a commerical hydroponics farm out of an old railroad warehouse. The nutrients for their water chemistry come from fish (poop), who are also raised in tandem with the plants, also for food. Also, at least one vertical farm plan has moved off the drawing board (sort of) into fundraising stages, and the land for it is cleared (both physically and legally) for building. This is at Will Allen's Growing Power, in Milwaukee, WI. Will, the "father of modern urban agriculture" and a frequent visitor to the White House with Michelle Obama's "Let's Move" program, is hoping to build the five story building within a few years. It will be located (and provide food to) in a food desert, in one of Milwaukee's largest low-income housing projects. So the world will soon have a test case for this idea. Other cities may follow, but as far as I know the closest one (in terms of multiple floors of greenhouses) is planned for Toronto, and is at least two decades out - which probably means its anyone's guess whether it'll happen.

An interesting piece that highlights the need for sustainable fisheries. This article discusses the damage deep-sea fisheries have done to ocean life; sea life at the bottom of the ocean is significantly slower than other forms of fisheries.

This will probably be more interesting to me and other Midwesterners who live around the freshwater seas of the Great Lakes. But the article has a lot of value outside of that, for all the approaches to an invasive species it highlights (its also nice to have a bit of "traditional environmentalism" in terms of ecological issues, which has lost a lot of the spotlight to other valid environmental concerns). Plus its interesting to read about electric sting guns and high security, water-and-sledge-hammer-proof science laboratories, and australians cursing about fish. Of course, there are the initial question about why invasive species are seen as a problem, or if they should be. Then there is the classic "shoot first, ask questions later" versus the move to sacrifice action for the sake of a better solution later. I think that our campus tends to value rationality and reason, and there is a bit more of a critical thought first attitude (though this may be a sweeping and inaccurate generalization) so it was interesting to see where that approach didn't seem to work. Granted, these are case studies, not widespread truths. But the article may force us to question critical questioning, when it holds up action. A lot to glean from the various bits in here, depending how you read it.

Here is an article about the pending removal of two dams on the Elwha River in the Olympic Peninsula, WA. This would be the largest dam removal in U.S. history, and possibly a precedent for future dam removals. The dams do not have fish ladders, and have significantly reduced the salmon population in the Elwha river, so their removal could dramatically impact the ecosystem.

This is an older article about an issue that has caused a lot of controversy in Alaska between interest groups. The giant open pit mine proposed at the headwaters of Bristol Bay's salmon runs is a threat to the fishing industry and the environment and many oppose it. Many also support the jobs it would bring to the area and Native Alaskans who are the primary inhabitants of villages in Bristol Bay are divided on the issue as well.