Author Archives: Peace Chung

Posts by Peace Chung

Environmental Group: Phosphorus Concern

With the growing demand for a reliable water source, watersheds in upstate New York quickly became a popular solution. These systems stretch “downstate to NYC via a complex of aqueducts and tunnels to supply 5.3 billion liters of safe drinking water per day to millions of customers…” (Vintinner). New York City uses three watersheds (the Croton, Catskill, and Delaware) as main sources for an acceptable water supply. There are some environmental concerns, however, with these systems.

Delaware County has the highest “density of farms than other counties in the watershed, and farming is presumed to be the largest source of phosphorus, according to Keith Porter, the director of the New York State WaterResources Institute, at Cornell University” (Brown). This means that there is a risk of phosphorus getting into the watershed system and possibly tainting the water supply for New Yorkers. Phosphorus is a powerful fertilizer, and if it gets into the water supply, toxins from algae that begin to thrive in the water contaminate it. Phosphate (PO4) can also lead to problems because it lowers the pH of the water, making it acidic (Harmful Algae). Not only are humans affected, but

A process to filter out the phosphorus pollution is necessary not only to make sure the water supply is considered safe for consumption/use by millions of people in NYC, but also to make it safe for nature upstate (e.g. the animal diversity on the farm and the biodiversity in its surrounding environments).

 

References:

Brown, Jeff L. “Protecting The Source.” Civil Engineering (08857024) 70.12 (2000): 50. Academic Search Complete. Web. 2 Dec. 2012.

“Harmful Algae.” The Harmful Algae. National Oceanic and Atmospheric Administration Center. 31 July 2012. Web. 3 Dec 2012. < http://www.whoi.edu/redtide/>.

John L. Campbell, et al. “A Cross-Site Comparison Of Factors Influencing Soil Nitrification Rates In Northeastern USA Forested Watersheds.” Ecosystems 12.1 (2009): 158-178. Academic Search Complete. Web. 3 Dec. 2012.

Questions for Emma Marris

1. There are many different types of strategies and tools that people are using to help “conserve” the environment. Do you think that there are any types of conservation efforts that are actually poor, ineffective ways of helping/protecting nature in urban areas?

2. What conservation efforts do you think people in highly urbanized areas should practice?

3. How did you come up with the seven goals for conservation for your last chapter? Do you think there are now even more important goals that people should be focusing on?

4. How closely related do you think the relationship between natural disasters (e.g. droughts, hurricanes, etc) and changes in the environment (e.g. climate) is?

5. In your book, you discuss a lot about the past history of environmental changes and successions and influences. What kind of ecological changes do you think will take place within the next 100 years? Do you think they will be good changes or bad changes for nature?

Possible Poster Questions

1.  What are some of the effects of CO2 emissions on biodiversity in urban parks throughout NYC?

2. How safe is NYC tap water (drinking water quality)?

3. What are the different types of rodents present in the NYC subway system and how have these species adapted to this urban environment?

Seven Goals for Society

Throughout Rambunctious Garden: Saving Nature in a Post-Wild World, Emma Marris discusses about the unachievable “pristine” ideal of an ecosystem in today’s world. In the last chapter, she describes seven goals that society and individuals should focus on in a collaborative effort to conserve and nurture nature—goals that may not always work altogether, but decided upon based on the unique situation.

The first goal Marris proposes is to protect the rights of other species—claiming, “all living things have intrinsic value” (154). Therefore, ecologists need to decide how to protect and save specific species.

The second goal Marris states is to protect charismatic megafauna. As “keystone species”, megafauna ultimately have a significant influence on understanding how an ecosystem functions and appears (156). However, this goal fosters some controversy since the argument of saving and protecting one species over the other is a very heated topic.

Marris mentions a third goal of decelerating the extinction rate by distributing resources to specific endangered species. This may be slightly probomatic since people groups have very different beliefs on which endangered species should be saved and protected.

The fourth goal Marris describes is to protect the genetic diversity in an ecosystem. The fifth goal mentioned is to “define and defend biodiversity” (the varied species within an ecosystem). This can be achieved through hydroseeding, gardening, and reforestation (among others). This is especially an easy goal many people can accomplish in their own backyards. Man-made bird feeders and private/public gardens help protect the local environment.

The sixth goal stated is to “maximize ecosystem services” to get as much human functionality out of the ecosystem. This means employing and applying policies such as financial incentives and taxes. While money is a great motivational factor, it unfortunately highlights an impression that one has the power to destroy and a superficial control over nature through money.

Finally, Marris describes the seventh goal as to safeguard the spiritual and/or aesthetic experience of nature. I especially agree with pursuing this goal because nature exists to be appreciated. Such beauty and unique-ness of an ecosystem is relaxing, comforting, mesmerizing, and, sometimes, indescribable.

Nature is not static—it is extremely fluid. It has been altering and changing for millions of years, and it will continue to constantly evolve. Society makes the mistake of defining ecosystems as something that is only beautiful when “pristine” and should be kept preserved for years to come. Hopefully, with these seven goals, individuals and groups in society work to conserve the fluidity of nature.

Designer Ecosystems and Hybrid Co-Existence

In chapter 8 of Rambunctious Garden: Saving Nature in a Post-Wild World, Marris dips into the topic of designer ecosystems. While restoration projects are too small “to capture complex processes” that have been lost, an ecosystem that is designed with a specific purpose and goals—“nitrogen reduction, sediment capture, or the maintenance of…species”—and exists simply to be functional (Marris, 125). While restoration ecologists cannot produce carbon copies of historic ecosystems, they use many artificial “shortcuts” to achieve a functional landscape they desire (125). From baskets to wires to chains, ecologists use such materials to create streams and “nooks and crannies for animals” (126).

Ecologists “admit that no one has ever been able to comprehend all the dynamics of any real ecosystem” (130). Therefore, complex and fully functioning designer ecosystems have yet to be built from absolute scratch with “no resemblance to any historical ecosystem” (130).

In chapter 9, Marris further explores the idea of working with what you already have and whatever works in nature. She discusses the possibility of a “hybrid future”— an ecosystem that is “part habitat, part active industr[y]” (133). Conservational efforts within urban, suburban, and rural societies build upon the idea of increasing nature’s usefulness and functionality. Marris cites Yellowstone as a “crucial part of an expanded model” (136). As protected areas with enforced rules, these environments become “anchors” of “conservation goals” (136).

Newly discussed ideas focus on areas in the industrial landscape that “are not active work sites”—wasted spaces that are “ripe for conservation” (144). Even idle spots such as the strips of land that borders highways are good candidates for ecosystems full of native flora. Hydroseeding (a mixture of various native seeds and water that is sprayed unto land) is being increasingly used on roadsides and highway medians. Marris’ suggestion of “fast-food restaurants and big-box stores” taking upon conservation projects (like hydroseeding self-sustaining plant species) on their idle spaces around their stores and shops is a great idea not only to impact nature on a positively grand scale, but also to get rid of maintenance costs and managing issues (145).

This idea of conservation projects is fantastic because it is a project that can be taken up by practically anyone in society. From community gardens, nature parks, balconies with plant boxes, to private home gardens and rural ranch lands, private citizens do not need to wait for any orders or response from the government. From wooden bird boxes and feeders to planting different species, individuals can easily set up their own conservation goals.

The Benefits of Exotic Species and Novel Ecosystems

While the concept of human introduction is prehistoric, the understanding of an invasive species is much more recent. In chapter 6 of Rambunctious Garden: Saving Nature in a Post-Wild World, Marris describes it as a moved or non-native species that naturalizes and is able to reproduce in its new environment such that it “becomes a rowdy nuisance” (99). Some of these species include zebra mussels in the Great Lakes and pigeons in New York City.

Marris discusses whether or not invasive species are as bad and evil as the general society believes it to be. While it is generally argued that when a species invades, the “ecosystem collapses, species go extinct, and complexity and diversity are replaced with a monotonous and weedy landscape dominated by invaders,” an example within Rodrigues Island actually disproves this argument. With two types of songbirds and a fruit bat living on this island, almost all of these rare species became extinct because of deforestation. However, exotic species were used to reforest the island “for timber and erosion control” (98), and the rare native species began to regrow in numbers.

There are National Park Service teams that have “treated more than one thousand square miles” (100) and travel from park to park in the United States with a mission to destroy and remove any invasive species that is not native to the local area. While this may seem like a great idea to protect sensitive native species in danger of extinction, not every new species is harmful to their introduced environment. In fact, if new species show potential in helping diversify the environment in the future, they should not be removed. It seems to me that these strike teams are too focused on keeping ecosystems “prehistoric” or untouched.

Marris continues to negate the idea that invasive species are always a bad thing by explaining other factors that cause extinction of or harm to certain species. Many bird extinctions come from birds being killed, not via eating birds’ prey. Sometimes, introduced species may not automatically compete with native species or prey on unsuspecting natives. In fact, “invasive species” can contribute to an increase in diversity in ecosystems in the future. For example, Easter Island had around 50 native species before humans stepped on the island, but gained 68 new species thereafter.

Other than contributing to potential increase in diversity of species in an ecosystem, exotic species have positive benefits like removing toxins from the soil, regulating erosion, and controlling undesirable species.

In chapter 7, Marris discusses the idea of a novel ecosystem. A novel ecosystem is not necessarily an untouched piece of nature, but an environment that has been influenced by humans in the past, and then left on its own to go through changes without human interference. Marris briefly mentions that many ecologists consider novel ecosystems as not worth studying because they don’t find them as “pristine” as other ecosystems (112). Unlike some forgotten ecosystems, the High Line is a great example that has gotten a lot of restoring and revamping through Friends of the High Line. This public park stretches over one mile on the West side of Manhattan. Once a railroad for freight trains, this elevated structure was closed down and left to ‘run wild’ for a few decades, but has recently turned into a beautifully maintained and diverse environment.

Marris further supports the idea that exotic species are not detrimental to an environment by using novel ecosystems as an example. Many novel ecosystems, which are composed of many exotic/invasive species, actually function better than native ecosystems. Novel ecosystems have the most potential for supporting a diverse environment will continue to evolve and diversify many species—especially with the prospect of hybrid species.

After reading these two chapters, Marris has convinced me that exotic species can actually be beneficial to an ecosystem, and not as detrimental and harmful as the general society believes. Although humankind should be mindful of certain invasive species that may pose threat to specific native species, people must remember that not only is this pretty rare compared to initial beliefs, but also such a small possibility compared to many of its benefits. More ecologists should be interested in and focused on studying novel ecosystems.

Pollinators of the High Line

The High Line covers several Manhattan neighborhoods on the West side. With many access points, which are near multiple public transportation stops, this public park stretches for over one mile between 10th and 11th Avenues on top of the old freight rail line. As an elevated park, the views of NYC’s skyline and other storefronts are pretty unique.

After sections of the freight railroad were shut down in the 1960s, the High Line turned into a messy and wild environment, unkept and unmaintained. A non-profit organization called Friends of the High Line began to work towards preserving the High Line and turning it into a public park. From as early as 2002, specific species like “lichens, bryophtes and vascular plants at the High Line” were collected and classified (Stalter, 388). With all the data compiled, the results showed that the High Line had “161 species in 122 genera in 48 families” (Stalter, 388).

It is discussed that multiple factors contribute to the public park’s diverse variety of species. Some include human visitation as a “possible source of transported seeds and new species”, and human disruptions like littering, trampling, soil compaction, and fires (Stalter, 300).

Therefore, in an attempt to limit some of the damages caused by humankind, the High Land has many rules, enforced by the park’s personnel. Some of these rules include, NO: walking on gravel/plants, picking flowers/plants, using amplified sounds, using bikes/boards/skates, littering, etc. It seems that the High Line wants its human visitors to create as little a disturbance as possible to its man-made and man-maintained environment.

When I visited the High Line, I did not notice such a wide spectrum of species, as Stalter states there is. I mostly saw bumble bees and honey bees, and many flies. Many of the pollinators I saw, however, where around yellow flowers and purple flowers of the High Land, which were consistently found in patches along the park. I did see some weird red and long bugs and a few birds, too, but other than that, it was difficult for me to distinguish many species from each other since they all looked generally similar to me.

Assisted Migration

In chapter 5 of Rambunctious Garden, Emma Marris discusses the idea of assisted migration—intentionally “guiding” certain species to new locations for a better chance of survival in their new environment. Because of the global climate change, many species are having, and will have, difficultly adjusting to their changing surroundings. This will surely cause some species to become endangered, or even extinct, since many species are unable to migrate to a safer environment because of certain barriers—like seas, cities, roads, and distance (75). One example of a species that has trouble migrating is the American Pika, which cannot move to another mountain peak to escape the warm climate. Therefore, humans guiding the transportation of specific species to more suitable and comfortable environments sound like an easy and amenable solution—sometimes even necessary.

However, with this possible solution, there are its own problems. Specific species may be unable to adapt to a new environment because of something small as the presence of “specific soil microbes” or the unobserved “microclimatic condition” (77). The species may pose as a threat to their new ecosystem as an invasive species. Transporting animals is also an expensive process. The relocated species may also die out in their new environment because of a lack of certain resources, rendering it extinct–a backfired result.

While assisted migration poses some solutions and problems, Marris points out that humankind has been involved with assisting migration for a very long time. Thus, it may be agreed that since humans have been interfering with ecosystems for thousands and thousands of years, it makes sense for people to help specific species that rely on assisted migration in order to survive. For some experts, assisting species sounds favorable in urban ecosystems like New York City because there is a gradual decline in “species richness”, especially of native species (Puth, Burns, 12). It sounds reasonable for humankind to try to restore depleting native species in an area with assisted migration, but the process must be advance with caution, for artificial help may produce undesirable results.

Personally, I feel like changes that occur in the environment should be natural and organic. However, humankind is the most unnatural and advanced species to exist, in terms of using resources and altering the environment. Since humans are a large part of the alteration of nature, it sounds reasonable for people wanting to help nurture back the environment with something like assisted migration.

A Vision of a Rambunctious Wilderness

In Rambunctious Garden: Saving Nature in a Post-Wild World, Emma Marris introduces the idea that today’s understanding of conserving nature is flawed and backwards. Importantly, Marris asserts that nature it is not pristine and simple, and it is not constant and static. It is constantly changing—whether it occurs naturally or artificially. Instead of having a “pristine wilderness” concept, Marris suggests a vision of a “rambunctious wilderness” should be taken on to coincide with human activities and actions, not against it.

In the first chapter, Marris criticizes human efforts of attempting to restore nature to a state in its past. Trying to repair an ecosystem’s damage from invasive species, destroyed plant life, and altered climate or territorial natural states, cannot magically bring back nature from the past. Although this type of restoration sounds extremely optimistic, it is not realistic. For example, since more than fifty percent of Hawaii’s plants are nonnative, an experiment of ridding a specific forest of all nonnative species took place to see if native species would be reintroduced naturally. It was discovered that only a few native seedlings reappeared on the forest floor and there were no drastic, laudable changes.  These efforts also have complications in documenting about the point of restoration, as well as the requirement of much time and money. In the second chapter, Marris continues with “The Yellowstone Model” to reason the impossibility of perfect restoration. Since nature is constantly changing, a “stable equilibrium” that societies want to conserve simply does not exist.

Marris also makes a significant point about the misconception of keeping nature separate from humankind. The human species has had an impact or influence in every ecosystem on the Earth, already! Nature includes “the bees whizzing down Fifth Avenue”—it is around us and within our reach. It does not make sense to conserve nature by removing, sometimes forcibly, humans living on the land that ‘must be conserved’. On the contrary, Marris actually suggests, “achieving coexistence between humans and other species” to avoid the removal of indigenous peoples and to allow the environment to thrive more. Instead of seeing nature as something untouchable in the distance, people should start seeing the beauty of nature that can coexist with humanity.

Marris succeeds in educating her readers of the importance of embracing nature as it is, while asserting the false perceptions of “restoration” and “conservation” that most of society has today. Throughout, her general use of examples expresses a dedication to research and for finding alternative, and maybe even more effective, solutions to society’s current problem with nature—which allows readers to take her seriously and even with a new perspective.

The Anthropocene, an Era of Humankind

We are living in the era of humankind, in which humanity is dominating every measure of the earth’s ecology and geochemistry. It is actually impossible to find a “place on earth that is unmarked by human activity” (Kareiva et al). Historically, artificial changes in the environment have been to benefit the human species (e.g. deforestation for economic purposes) and/or are an unfortunate consequence of human activity (e.g. oil spill off the Gulf of Mexico, 2010). All human actions have had significant and sometimes even irreversible outcomes that individuals and societies have just recently begun to not only experience a deep nostalgia for pre-human landscapes and environments, but a longing to be more environmentally conscious and to ‘rewind’ some of the damaging consequences that certain ecological systems have suffered.

In Human Domination of Earth’s Ecosystems, Vitousek (et al) describes the human effects on the planet’s ecosystems. In general, land transformation is the primary force in the damage or loss of biological diversity on the global scale not only because it can affect the boundaries of changed lands, but also impact the climate of an area directly. Although, marine environments are more challenging to analyze than those of terrestrial ecosystems, there is still a substantial amount of damage—especially since most of the “human population is concentrated near coasts”. In the marine industry, the focus is on “top predators, whose removal can alter marine ecosystems out of proportion to their abundance,” leading to overexploitation or depletion of specific underwater species. Also, humankind has had a substantial impact on biogeochemical cycles. Although CO2 is added into the atmosphere via human activities (e.g. mining and burning of fossil fuels), the high level of gas is contributing to the greenhouse effect. Changes in other gas such as N has also had consequences, including: an increase in reactive N gases, contribution to acid rain, and an amplified concentration of the greenhouse gas (nitrous oxide).

Other than alterations in the land, sea, and sky, human activity has affected animal life as well. Humankind has accelerated rates of extinction for many species—a process that is “wholly irreversible”. Although conservation attempts on individual endangered species has had some successes, the process is usually very expensive.

Kareiva (et al), however, suggests in Conservation in the Anthropocene of some examples of habitats unaffected by human activity. She states that “ecologists and conservationists have grossly overstated the fragility of nature” and that nature can actually be very resilient—recovering “from even the most powerful human disturbances.” For example, the Chernobly nuclear facility has thriving wildlife, in spite of the high levels of radiation. Orangutans in Indonesia, originally thought to survive only in unspoiled forests, have actually been found in “oil palm plantations and degraded lands” in large quantities. As humans destroy habitats, new ones are created in its place.

Human activity, which occurs to most importantly benefit the growth and success of the human enterprise, has had immense global consequences. Humans are changing the planet at an accelerated pace, and the rate of destruction of the earth’s ecosystems will continue to rise. A balance must be struck between harboring the growing/expanding scale of the human race with keeping different environments at their own natural pace, submissive to its own organic changes.

Comments by Peace Chung