As you start reading Mannatta, the one point that beings incredibly clear is how much the island of Manhattan has changed since it was first discovered and subsequently colonized. Even more astonishing is how quick these changes have happened. Manhattan is described as a green piece of land, filled with ponds, surrounded by rivers, and full of hills, valleys, and even wetlands. Yet the article notes that by 1811, the first major signs of a up and coming city was already striking the island. Sewers were being built along with streets and land was being flattened for housing. It is also noted that by 1898, the majority of Manhattan, with exceptions on the northern sections, had been changed and adjusted for city life.
It is incredibly strange to consider just how much the island has changed since it was first populated. The amount of different environments that have completely disappeared; streams, ponds, wetlands, beach, shore lands, and even forests. The pointing out of these previous ecosystems that was previously plentiful in Manhattan was a reminder of a mapping project I participated in last semester. For the project, I went out with a group to downtown Manhattan and mapped different streets in accordance to the previous ecosystems that existed there. Having done that before, I was very aware of the fact that the evolution of Manhattan has caused all of these places to completely disappear.
However, what we often do not consider when we talk about ecosystems disappearing, are the many animals that have gone away as a result of the changes to the city. This brings up the point about how humans often just cause changes to the their environment without any concern for the long-term consequences, especially when city-building. These changes have also causes most of the interaction that people in the past had with nature to disappear. In the end, many sacrifices went into the evolution of Manhattan and the biodiversity of the city has suffered considerably as a result.