Reflection on The Amazon's Response to Degradation and Climate Change

Article: Study finds wide variation in Amazon's response to degradation and climate change (published August 23, 2025): Yale article on Tipping Points of Amazonian Forests: Beyond Myths and Toward Solutions, a study by Paulo M. Brando et al. (2025).

Source Reflection

I chose this article because of my initial interest in Amazon due to COP30’s location in Brazil. I wanted to understand the ecosystems in the area in order to understand the perspectives and politics of the United Nations representatives, and target areas for accomplishment since COP29. I am also very interested in the Yale School of the Environment, making this an even more enticing and trustworthy resource to me. The article also helps to provide a positive outlook on climate impacts, something that is often missing in most climate news, which may scare people away from joining the movement. The article published as the new study proved that we are not in fact stuck in an unending spiral of feedback loops that will eventually lead to the demise of the Amazon rainforest, but instead there are tangible steps forward. 

Since the article is a summary and expansion of the findings of the study, what I found most challenging in the process of deconstructing this information was more in the actual study. Since the study itself is very long and complex, it took me some time and critical thinking to weed out the parts that I wanted to focus on in order to understand the article and the study's findings. There were two graphics from the study that challenged my thinking during the process. One depicts a timeline of anthropogenic effects on Amazon, including details about effects of human management and ENSO and results, such as bistability. The concept of El Niño is one that I have learned about in the past, but still struggle to understand and apply to specific situations, such as this study. This context pushed me to understand it further and be able to apply it to better understand other studies in the future. The concept of bistability interested me, as in this particular case, it defines the ability for two parts of the rainforest to act differently in regards to carbon capture and resource production. Namely, the western Amazon is a carbon sink, while higher fire activity and longer, more intense dry seasons makes the eastern Amazon either neutral or even a weak carbon sink. 

Knowledge Gained 

From this article, I was able to further understand how human processes affect carbon transfer and ecosystems in general, and grasp further knowledge of how we can adequately respond to such changes. As someone very interested in pursuing environmental science, it also helped me to understand the sector of environmental research, giving me skills to both understand what work needs to be done. For example, the “Future Directions” section was very helpful in strengthening my understanding of the article's findings, while adding pathways to solutions. It showed how community connection is essential to implement impact- reducing strategies. Understanding feedback loops was essential in my understanding of the “hammer vs. domino” effects described in the article, something we covered in the beginning of the Earth unit in class. Also, understanding the importance and deep complexities of soil health and management allowed me to extend my interpretation of this study, in order to understand how different areas of Amazon may be affected by human impacts.

Connections 

In addition to changing the way we address human impacts on ecosystems, this article also provides an interesting perspective on how we view such issues, and how we can present that information and engage others. Although there have been devastating human impacts, knowing that we are not stuck in a never ending feedback loop that will eventually lead to a spiraling downward demise of Amazon, it provides some hope in our ability to repair our effects on ecosystems, both on a local and global scale. Specifically, we can see this issue of “hammer” effects versus tipping points on feedback loops playing out right in our own little corner of Western Massachusetts. At Deerfield, we can observe this issue in the new construction that has been extremely prevalent on campus recently. For my observational study, I observed tree’s responses to the disturbance of nearby construction, finding that the trees closest to the disruption had generally lower density of leaf coverage, as compared to those further from the construction sites. The construction in this scenario would represent a “hammer” effect, disrupting biodiversity, soil health, and ecosystem services created by tree health. Positive climate- changing feedback loops such emissions from the Deerfield fleet would represent the “domino effect", giving us a tangible comparison of how ecosystem health differs due to different effects, and what we can realistically do to halt climate impacts. We also studied the carbon storage of the Eaglebrook woods, although we discussed how our small scope of research may have led to incorrect predictions. Researching the woods further may allow us to observe differences in carbon capture due to factors such as what is experienced in different areas of Amazon. 

Questions & Significance

1) How are the threshold “tipping points” as discussed in the article determined? 

2) Do “hammer effects” also take into account drastic changes in temperature? How can these be balanced with the way

scientists view “domino effects” to be able to create pathways to solution? 

3) The article mentions a lot about connection with local communities and regulations being put in place in order to diminish human impacts, but what are some actual action plans to stop human “hammer effects”? 

4) In class, we have talked a lot about human impacts on the environment, and been prompted to think about realistic solutions, but I am curious how some of the thresholds discussed in the article such as forming "resilience and recovery” and “people- forest” and “forest- climate” solutions are actually being planned to be accomplished. I believe that all of these tenets are extremely important, but it is still a struggle to engage people and get them to recognize the necessity for understanding of each other and the natural world. 

Citation

Pol, Alexander. “Study finds wide variation in Amazon's response to degradation and climate change.” phys.org, 23 August 2025, https://phys.org/news/2025-08-wide-variation-amazon-response-degradation.html. Accessed 16 October 2025.

Yale University. “Tipping Points of Amazonian Forests: Beyond Myths and Toward Solutions.” Annual Reviews, 2025, https://www.annualreviews.org/content/journals/10.1146/annurev-environ-111522-112804#right-ref-B99. Accessed 16 October 2025.

Photo: https://www.amazonteam.org/the-amazon-rainforest-fascinating-facts-about-its-importance-and-biodiversity/