Author Archives: Kelly Chan

Posts by Kelly Chan

Alternative Rat Assignment

Regino, Cavia, Gerardo Rubén Cueto, Olga Virginia Suárez, Changes in rodent communities according to the landscape structure in an urban ecosystem, Landscape and Urban Planning, Volume 90, Issues 1-2, 15 March 2009, 11-19 http://www.sciencedirect.com/science/article/pii/S0169204608001692

This paper describes research done on rats in Buenos Aires, Argentina. Throughout the city, and across various landscapes and land-cover types, rodent communities composition and diversity were analyzed. Four landscapes – a natural reserve, a parkland, a shantytown, and an industrial-residential neighborhood – were studied, and certain rat species were found in each one. Native species were found only in vegetated environments, which would be natural reserves and some parklands. Meanwhile, introduced species were found in dwellings, shops, and factories, which would mostly be shantytowns and industrial-residential neighborhoods. Overall, introduced species of rats were more common in the most urbanized areas of the city.

This research is significant to public health/rat control in NYC  because rats are extremely common here and are known to transmit diseases. There are a great deal of different environments within the five boroughs, so this research can give insight as to where to find certain rats (especially the introduced species) known to carry certain viruses, and then we can implement rat control. On another note, this research shows that native rats are found in the least urban areas, which is good to know for conservation purposes if the intent is to restore native species.

NYC Water Supply – Hydraulic Fracturing

As a spokesperson for natural gas companies that partake in hydraulic fracturing, the main argument that I am putting forward is that there is no solid evidence that the processes of my industry are negatively affecting the drinking water supply. Changes to the 1993 Filtration Avoidance Determination (FAD) could pose a great threat to the industry, so it is essential that I make known the truth about the supposed connection between hydraulic fracturing and contaminated water.

A Congressional Research Service report from July 12, 2012 entitled “Hydraulic Fracturing and Safe Drinking Water Act Issues,” by Mary Tiemann and Adam Vann, addresses public concerns about drinking water being effected by nearby fracturing. The report states that there have been no reports from published studies and agency investigations that show a direct correlation between hydraulic fracturing and groundwater contamination. It also implies that the actual migration of gas or fracturing fluids into an aquifer in the case of shale formations would cover a rather large distance, so it is quite difficult and almost impossible.

The report identifies the more probable cause of contaminated drinking water as an issue with the casing or cementing of the natural gas or oil well. Since this also happens with oil wells that have nothing to do with hydraulic fracturing, the industry cannot be solely blamed for any incidents of contamination. In addition, there is usually little information on the water wells that are tested for contamination, which means that they could have already been contaminated before the hydraulic fracturing began.

The industry and process of hydraulic fracturing is undoubtedly something that must be continued. Oil and gas reservoirs around the world are continually decreasing, so there has to be an alternative method available. If there are restrictions placed on hydraulic fracturing, which there shouldn’t be since there is no concrete proof that makes it the definite cause of contaminated drinking water, the United States will eventually lose its resources for gas and oil entirely, and that is something that it absolutely cannot afford to do.

 

Tiemann, Mary. Hydraulic Fracturing and Safe Drinking Water Act Issues. Washington, D.C.. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc83959/. Accessed December 2, 2012.

Questions for Emma Marris

  1. How did you coin the term, “rambunctious garden”?
  2. Is there anything significant (i.e. reviews, critiques, counterarguments) that has occurred since the publication of your book that makes you want to alter what you wrote?
  3. If you could give people only one piece of advice on conservation (specifically in urban areas like NYC), what would it be and why?
  4. Of all the places you visited to conduct research for your book, which one would you say exhibited the most exemplary conservationism? Would it be applicable in other places as well?

Poster Questions

  1. Does the quality of New York City’s drinking water vary across boroughs? If yes: how so, why, and what problems does this create?
  2. How do rodents and pests factor into the city’s ecosystems? What would happen if we were to eradicate them (assuming that such a thing is possible)?
  3. Is there an area in New York City that is considered to be the “healthiest” in regards to people and/or nature? If yes, what are the reasons behind its success and the relative failure of other areas?

Rambunctious Garden, Chapter 10

The tenth and final chapter of Emma Marris’s Rambunctious Garden: Saving Nature in a Post-Wild World is entitled “A Menu of New Goals.” Rightly so, the chapter presents a list of goals that Marris suggests for when “you admit that you can’t put things back the way they were” (219). With this list, Marris manages to come up with conservation hopes that solve any problems possible instead of trying to solve everything. Goal 1 is to protect the rights of other species, which follows along with Marris’s recurring argument that humans can and should coexist with nature. Goal 2 is to protect charismatic megafauna, which is the preservation of large mammals that humans like. Goal 3 is to slow the rate of extinctions, which is to assign all species equal value. Goal 4 is to protect genetic diversity, which is to transcend the concept of a species and save animals of varying genetic composition regardless of their label as a single species. Essentially, this will conserve as many organisms as possible. Goal 5 is to define and defend biodiversity, which regards whole ecosystems as more important than the individual species that make them up. Goal 6 is to maximize ecosystem services, which is to conserve mainly those ecosystems that provide something beneficial to humans other than preserved nature. Goal 7 is to protect the spiritual and aesthetic experience of nature, wherein conservation is done simply because humans like the look and feel of nature versus the usual reasons of maintaining wildlife and the environment.

Marris distinctly points out that “the final lesson is that no single goal will work in all situations” (220) and that “there is no one best goal” (243). Given that, some of the goals that she presents are quite contradictory. This is not a flaw on Marris’s part, but just something that will forever be an issue when it comes to the matter of conservation. In fact, Marris does a pretty good job of covering the different schools of thought on conservation. Still, there will always be different views and opinions on what is best for the planet, which Marris uses to her advantage in promoting the concept of the rambunctious garden: “In different places, in different chunks, we can manage nature for different ends—for historical restoration, for species preservation, for self-willed wildness, for ecosystem services, for good and fiber and fish and flame trees and frogs” (245). I’ve agreed with Marris on this point throughout the whole book. We need to make the best of what we still have. Sure, the ideas of historical baselines and reintroducing native species sound really great, but they’re basically impossible. All of the goals discussed in this chapter have some level of significance in the world of conservation, and there is nothing wrong with some overlap across the world. Everyone does not have to conform to one goal; all of the various goals can be accomplished in different places where they would be the most appropriate and beneficial. Nonetheless, these goals must be attempted to some extent. All the conservationists of the world will never come to a consensus on what one thing is best for the environment, so we’ll just have to do what we can because the most important thing in all of this is the bigger picture: saving the natural world that we’ve so brutally destroyed and learning to simultaneously flourish alongside it.

Rambunctious Garden, Chapters 8&9

In the eighth chapter of Emma Marris’s Rambunctious Garden: Saving Nature in a Post-Wild World, entitled “Designer Ecosystems,” comes an addition to the recurring concept of manmade nature. Yet again, this proposal rivals the standard conservation tactic of restoration to a historical baseline. Instead, designer ecosystems refer to those that are mended to suit their needs. This is more of a functional restoration, for it involves the construction of different aspects in order to perform certain jobs such as the reduction of nitrogen. Although this hasn’t become a particularly accepted or common practice, it seems pretty useful and beneficial. The idea of the historical baseline is slowly fading as conservationists begin to see more and more that the true origins of ecosystems cannot be discovered and that they’d end up changing anyway. If we can do something to repair damage while simultaneously conserving nature, there is no reason why we shouldn’t do so.

Another type of designer ecosystems that Marris mentions is that of entirely human-generated ecosystems. This is really not conservation at all, since nothing is being saved or preserved, but it’s more of an extreme version of the rambunctious garden. It isn’t humans tending to the nature around them but humans actually creating the nature. This might be the future of conservation, but it’s a bit too controlled for me. Nature has always been out of human control, and our efforts to save it are pushing that boundary, but us building it from scratch is just going too far. It’d be like little virtual ecological communities, and the point of nature, as I see it, is that it’s out of our hands and can’t and shouldn’t be manipulated to that extent.

The ninth chapter of Marris’s book, entitled “Conservation Everywhere,” rehashes the aspect of the rambunctious garden that says that nature can exist everywhere. All of her aforementioned conservation methods operate in accordance with her idea to “[make] the most out of every scrap of land and water,” (193) “from industrial rivers like the Duwamish to the roofs of buildings and farmers’ fields” (194). Theoretically, this sounds perfect. Instilling small pieces of nature everywhere possible can’t hurt; it would add some aesthetic value to urban areas while conserving nature at the same time. Yet, even with her example of the successful coexistence of nature and industry on the Duwamish, nature in “the loud, soot-belching landscape of factories, processing plants, energy infrastructure, and transportation” (204) seems remarkably difficult. In any city, these installments of nature would really just be out of place and probably ineffective. Nevertheless, it could be a great initiative if there was a foolproof way of going about it.

Throughout the ninth chapter, Marris appears to believe that everyone wants to coexist with nature in order to conserve it. Based on the history of humankind, I would beg to differ. All we’ve ever done is destroy nature to make more room for us, so it wouldn’t make sense that people are suddenly willing to surround themselves with it just because it’s dying out. In fact, many people are probably more than willing to let it continue on its current path of deterioration, or if not they definitely don’t want it at their doorstep. I personally think that conservation should be a priority and that we should do it however possible, but the hope for ‘conservation everywhere’ won’t even get close to becoming a reality until this becomes a more widespread view.

Rambunctious Garden, Chapters 6&7

In the first five chapters of her book, Rambunctious Garden: Saving Nature in a Post-Wild World, Emma Marris discusses various conservation methods only to shoot them down and advocate her proposed method of the rambunctious garden. Most of the time, the negative aspects or consequences of a method involve invasive species. One conservation technique involves restoration to a baseline with the overall goal of attaining a pristine wilderness where only native species exist. The issue with this is that most ecosystems, if not all, have been tainted by invasive species over time, which makes such an accomplishment practically impossible. Another conservation practice is that of rewilding, which heavily involves the introduction of invasive species to ecosystems in an attempt to somewhat restore balance along the food chain. A prominent counterargument to this practice is that the invasive species may not survive in the new ecosystems or that they’d adapt too well and overpower native species, effectively failing to restore the balance. The third conservation scheme is assisted migration, which is the process of relocating various species from an environment in which they are struggling to live to a more suitable habitat. Again, there is no guarantee that these invasive species will survive or not take over the ecosystem entirely.

On the contrary, the sixth chapter of the book, entitled “Learning to Love Exotic Species,” stresses that invasive species are not really as bad as they are made out to be. There is definitely a substantial amount of evidence that makes them look bad, and that seems to be what people focus on the most, but “while some exotic species are a huge problem, the vast majority are not. Science is finding that some are quite well behaved and innocuous, or even helpful” (141). Marris offers several examples to support her claims, such as the case of the Pyura praeputialis, a creature from Australia that has helped boost biodiversity on Chilean rocky tidal shores by creating a habitat where large invertebrates and algae can flourish. There are also the examples of exotic grasses becoming homes for native birds and southwestern willow flycatchers nesting in the exotic tamarisks (151-152). With those illustrations put out there, Marris then leads into the seventh chapter of her book and breaches the topic of novel ecosystems, which are “new, human-influenced combinations of species that can function as well or better than native ecosystems and provide for humans with ecosystem services of various kinds–from water filtration and carbon sequestration to habitat for rare species” (161). The term ‘novel ecosystems’ basically refers to ecosystems that have been altered by humans and invasive species over time yet are still functioning well. At this point, these exotic-dominated ecosystems that were created, for the most part, by human hands are all we really have. They may not seem ideal to some conservationists, but they “may be our best hope for the future” (176).

Up until this point, I was convinced that invasive species were something to be frowned upon. They seemed to be the one problem that always got in the way of a good conservation tactic, but that is no longer the case. By now, they are essentially unavoidable anyway. If they are profuse and valuable, I don’t see why we shouldn’t take full advantage of them. They’re probably our best shot at sufficient conservation, so we should definitely take what we can get and encourage it wholeheartedly.

The High Line & Stalter

Emma Marris’s concept of the rambunctious garden is that of, in simple terms, manmade nature. It requires profuse human involvement in conservation, unlike many of the other methods that she criticizes in her book, Rambunctious Garden: Saving Nature in a Post-Wild World. In accordance with this notion of the rambunctious garden, Marris deems it possible and to a certain extent necessary for humans to coexist with nature. Furthermore, this can occur in basically any environment, regardless of whether it is rural or urban or something else entirely. Humans can actively incorporate nature into their lives and surroundings and allow it to flourish while still functioning undisturbed alongside it.

An abandoned railroad track in the middle of Manhattan is probably the last place one would think to find nature. In the heart of what is often considered to be the world’s greatest urban area lies the High Line. Preserved in the hopes of forming a pedestrian walkway, the elevated area that lies just west of 10th Avenue between 13th and 34th Streets began to sprout vegetation after its use as a commercial rail line ceased. Eventually, the pedestrian walkway became a reality, and since then the High Line has become a beautiful attraction, offering a peaceful walkway with plenty of benches for pedestrians that is barricaded on both sides by greenery.

In my opinion, the High Line matches up perfectly with the definition of a rambunctious garden. Human hands constructed the whole space from before it even became the High Line, and the site continues to be influenced by humans in several ways on a daily basis. For example, it is maintained by humans in order to ensure that the vegetation survives and continues to bloom as well as remains on the sides of the walkway. An article by Richard Stalter, entitled “The flora on the High Line, New York City, New York,” only enhances my aforementioned opinion of the High Line being a rambunctious garden with its observations on the human interaction regarding the park. According to Stalter, “human visitors to the High Line have probably inadvertently transported seeds to the site, a source of new species,” (387) which plays a factor in its high species richness and diversity. As for human coexistence with the High Line and the park’s endurance of the urban extremity that is Manhattan, it seems to be doing just fine. There are most likely a large handful of New Yorkers that are not aware that the High Line is even present, and they are not living their lives any differently because of it. This goes to show that we really can have nature in our own backyards, as Marris suggests. Even in New York City, with “drought stress in dry weather, low fertility of soil, human trampling and cutting vegetation, and the smothering of plants by debris such as tires, bottles and additional trash,” (387) the High Line has continued to prosper. Some of it is even shaded by the city’s signature skyscrapers, but that hasn’t stopped the nature in that spot from developing. Thus, although it initially seems rather unlikely, the High Line possesses all of the qualities of a rambunctious garden, which in turn helps support Marris’s argument that such a thing really is possible and beneficial.

(I’m in the middle)

Assisted Migration

Assisted migration is the process of relocating various species from an environment in which they are struggling to live to a more suitable habitat. This practice stems from the recent observations of different organisms finding it difficult to survive in their environments because of climate change. As global warming continues to raise temperatures across the globe, more and more species will be desperate to escape to cooler areas. For those who are not physically capable of doing so themselves, the act of assisted migration comes into play.

In the fifth chapter of Rambunctious Garden: Saving Nature in a Post-Wild World, Marris offers an example of a species that has fallen victim to climate change and cannot save itself: the American pika. These mammals cannot survive for more than a few hours in 78-degree-Fahrenheit weather, so they have been ascending mountains in search of cooler territory. That may solve the problem temporarily, but “on some mountains, they are already living at the peak [and there] is nowhere for them to go” (106). Even worse, migrating to another mountain on their own would be a futile and fatal journey. This predicament applies to a great deal of other species as well.

Upon hearing of this tragedy, our first instinct is to rescue these suffering species from a problem that humans caused in the first place. Although that sounds really nice and just, there are so many problems that arise from assisted migration. Much like the negative aspects of rewilding, there is no guarantee that the species that are moved will thrive in their new environments. There is always the possibility that they will fail to adapt and die out, which defeats the purpose entirely. On the other hand, they might adapt too well and become an invasive species, which solves one problem but brings forth a handful of other ones. Furthermore, it would be nearly impossible to cater to every species in need of rescue. These issues make assisted migration basically unachievable, for there would be no funding for a project with so many potential flaws.

Although the idea of practicing assisted migration is practically out the window, it would be incredibly useful for urban ecosystems. Despite the lack of species richness in the New York metropolitan region, as described by Linda M. Puth and Catherine E. Burns in “New York’s nature: a review of the status and trends and species richness across the metropolitan region,” these extra warm environments are probably among those areas whose inhabitants are suffering the most. For once, the prospect of saving nature may require removing it from its native environment. Usually, conservation involves returning species to their original ecosystems, but that is not the case when it comes to assisted migration and urban spaces. This time around, it would actually probably be better to relocate them.

Like many other conservation tactics, assisted migration sounds like a great plan. Humans caused these species’ demise in the first place, so we should be the ones to help them. Unfortunately, such actions are simply not plausible for the fear of too many possible mishaps. We will simply have to find another way to save these species, and soon.

Rambunctious Garden, Chapters 3&4 (Rewilding)

Described in the fourth chapter of Emma Marris’ Rambunctious Garden: Saving Nature in a Post-Wild World, ‘rewilding,’ articulated by Dave Foreman, is the notion “that the main factors necessary to keep ecosystems resilient and diverse are the regulation provided by large, top-of-the-food-chain predators; the room for these predators to do their work; and connections between predator ranges so they can meet, mate, and maintain a healthily diverse gene pool” (88). This concept is essentially the polar opposite of the conservation methods discussed earlier in the book – those that aim to achieve pristine wilderness. In the attempt to reintroduce large predators, rewilding may require an influx of invasive species as replacements for similar native species that are extinct and therefore no longer attainable. Basically, rewilding bears quite a significant resemblance to Marris’ proposal of the ‘rambunctious garden,’ for it would create manmade ecosystems to be heavily supervised and interlaced with human interaction. In my opinion, rewilding sounds fantastic. The logic behind it makes perfect sense; large predators will manage the herbivore population, which in turn will prevent the overuse of certain plant species and allow the revitalization of the greenery, and also potentially provide carcasses that support the survival of other species.

As for the issue of bringing nonnative species into the ecosystems, I don’t see why that is a problem. The disagreement stems from other conservation theories that advocate restoration to a truly original state, but at this point that seems practically impossible. The overall goal of conservation is to revive the nature of the planet, and conditions have gotten so horrid that any plausible action should be taken immediately. Introducing nonnative species to these ecosystems will definitely alter them, but they would be changing anyway, which Marris points out many times throughout the book. Furthermore, the new species are similar enough to the extinct native species that it probably won’t make too much of a difference anyway. It would almost be as if the native species had evolved and acquired some new qualities, which is an aspect of life that happens all the time. With regards to ethics, I agree with Josh Donlan’s perspective: “we killed ‘em once; we can kill ‘em again” (96). That’s pretty harsh, but it’s true. We need to do anything we can to save the Earth’s wildlife, and if that demands a failed experiment and the taking of animals’ lives, then so be it. Besides, it’s nothing that humankind hasn’t done before. Most people have never before thought twice about killing an animal, so what’s changed? Moreover, it doesn’t have to be a mass killing; rewilding can be done slowly and carefully on a small scale to test it out before committing to it.

Although I strongly support rewilding and can see how the project would be executed, I don’t believe the logistics of it can be carried out particularly well. We have no knowledge of the potential costs – to transport the animals, to oversee their wellbeing, to keep them away from humans whom they might injure, etc. – of such an endeavor. To add to that, who would be willing to fund something that might not even work? Rewilding might be possible if the world was full of wealthy conservationists, but for now it shall remain nothing more than a far-fetched dream.

Rambunctious Garden, Chapters 1&2

Emma Marris, in the first two chapters of Rambunctious Garden: Saving Nature in a Post-Wild World, expresses her opposing view to the common traditions of conservationism that aim to maintain a “pristine wilderness” (2). The first chapter, “Weeding the Jungle,” mainly criticizes the practice of restoring nature to a state of its past. For years conservationists have rid ecosystems of invasive species, reintroduced native species, constructed elements that were once present, and created habitats in an attempt to bring back original qualities from the designated point in time. Although the outcome sounds tempting, such an achievement is practically impossible for several reasons. Firstly, the example of Hawaii that Marris described did not produce particularly spectacular results. Secondly, there is usually very little documentation about the point of restoration so there is no way to know how successful the project was anyway. Thirdly, executing these restorations consumes a great amount of time and money that the world simply does not have to contribute to the cause.

The reasoning behind the impossibility is further explained in the second chapter, “The Yellowstone Model,” which is mostly about how nature is forever changing. According to paleoecologist Feng Shung Hu, the stable equilibrium to which conservationists desire to return Earth’s ecosystems simply does not exist (Marris). The second chapter also discusses conservationists’ view of human interaction with nature. A significant point Marris repeatedly points out is that humankind has interfered with every piece of nature that exists on the planet. Even so, for a long time conservationists have seemed to believe that the best way to approach nature is to separate it from people altogether. It has been determined that in doing so, the United States would be “a white continent flecked with green here and there” (37).  Furthermore, native people have been forced out of their homes so that the parks could be created and kept untouched. As for this practice, Marris argues for the exact opposite: “achieving coexistence between humans and other species” (32), which would allow for more nature to thrive and prevent the removal of indigenous peoples. In other words, she advocates for a ‘rambunctious garden’ – nature that is created and maintained by humankind.

Overall, Marris has developed a powerful argument. The conservation traditions that she rivals are widely known and accepted. However, she manages to bring to the table a different perspective – the ‘rambunctious garden’ – on conservation that has been previously addressed by few but never fully recognized. Challenging such broadly established practices is a difficult task, but she does it extremely well. Throughout the two chapters, Marris provides clear and strong support for her arguments. Offering plenty of examples, she proves that she is not just complaining about the failure of various conservation tactics and creating surreal solutions, but that she has researched those failures and thoughtfully crafted alternative solutions. If the rest of the book continues with a similar format of eye-opening opinions and substantial evidence backing change, by the end of it Marris’s arguments will have definitely influenced my outlook on conservation.

The Future of the Earth and the Anthropocene

The Anthropocene refers to the period of time during which the Earth’s ecology and geochemistry have come to be dominated by humans. Over time, mankind has transitioned from living off of the Earth to dictating life on Earth. If this trend continues, the planet’s ecosystems are in grave danger, yet “most aspects of the structure and functioning of Earth’s ecosystems cannot be understood without accounting for the strong, often dominant influence of humanity” (Vitousek et al). At this point, it seems we are at a standstill; there is no moving forward without destroying the planet and no moving backward because humans are too invested in their progress and contributions.

The article “Human Domination of Earth’s Ecosystems,” by Vitousek et al, discusses just how great of an impact humans are having on Earth. With any sort of development, we may be affecting anything from the land to the oceans to the CO2 in the atmosphere to the various species with whom we share the planet. As humans continue to thrive on Earth, our harm to the planet will only get worse if we do nothing about it now.

On the other hand, Kareiva et al, in the article “Conservation in the Anthropocene,” looks at not how much damage humans are causing to the Earth but at the failure of conservation, which according to them is “the creation of parks and protected areas.” The article criticizes conservationists for holding to that definition and not compromising despite the fact that humankind is present and will continue to develop.

Both articles address the fact that something must be done to counteract the downward spiral that the Anthropocene has brought upon the Earth. Vitousek et al said, “maintaining the diversity of “wild” species and the functioning of “wild” ecosystems will require increasing human involvement.” Meanwhile, Kareiva et al said, “the fates of nature and of people are deeply intertwined.” Though the proposals sound quite similar, it seems to me as though Vitousek et al meant that we must fix and further avoid our past mistakes as we move into the future while Kareiva et al meant that we could only move into the future once we understood that we have to work as one with nature. In other words, Vitousek et al appear to believe that humankind should keep industrializing and simply keep the wellbeing of the planet in mind while Kareiva et al appear to believe that industrialization and the health of the planet should be of equal importance in all future endeavors.

As I see it, the method of finding a balance between conservation and human development offered by Kareiva et al –urban ecology – is the only way to go about saving the environment. If we lean too far towards conservation, we will have to change the way that most of the world’s population has grown accustom to living. If we lean too far towards human development, we risk forevermore losing the exquisite nature of the planet. In order for humankind to continue making progress without further wounding the Earth, development and nature must go forth together and never again overpower each other.

Comments by Kelly Chan