Introduction
The Ecological Importance of the Amazon Rainforest and the Role of Sustainable Agriculture
Often referred to as the “lungs of the Earth” the Amazon Rainforest is a vast and unique ecosystem that spans 6.7 million square kilometers across nine South American countries. This incredible natural wonder is not only a treasure trove of biodiversity, but also plays a key role in regulating the global climate. However, the Amazon faces significant threats from deforestation, mining, and unsustainable agriculture. Sustainable and regenerative agricultural practices are vital to preserving this invaluable ecosystem.
Biodiversity Hotspot
The Amazon Rainforest is home to an astonishing variety of plant and animal species, many found nowhere else on Earth. It contains about 10% of the known species on the planet, making it one of the most biodiverse regions in the world.
This extraordinary diversity provides numerous ecological benefits:
Species Interdependence: The complex web of life in the Amazon relies on the coexistence of diverse species. From pollinators such as bees and butterflies to top predators such as jaguars and anacondas, each organism plays a unique role in maintaining the balance of the ecosystem.
Medicinal Discoveries: The rich biodiversity of the Amazon has led to the discovery of a multitude of medicinal plants and compounds. Indigenous peoples have long used these resources to treat a variety of ailments, and modern medicine continues to benefit from these discoveries.
Climate Regulation
The Amazon Rainforest acts as a critical component of Earth’s climate system through a process known as the “Amazon Rainforest Pump”. This includes:
Carbon Sequestration: The Amazon stores large amounts of carbon in its trees and vegetation, helping to reduce the eNects of climate change. The rainforest acts as a carbon sink by absorbing more carbon dioxide from the atmosphere than it releases.
Moisture Recycling: Trees in the Amazon release water vapor through a process called transpiration. This moisture is then carried by winds and forms rain clouds, which provide
rain not only to the Amazon itself but also to adjacent areas, including parts of South America and even North America.
Global Climate Regulation: The Amazon’s influence on weather patterns and precipitation extends far beyond its borders and aNects the global climate system. Changes in the health of the Amazon can disrupt these processes and lead to more extreme weather events around the world.
Threats to the Amazon Rainforest
Despite its immense ecological importance, the Amazon Rainforest faces numerous threats, primarily driven by deforestation and unsustainable agricultural practices. The main challenges include:
Deforestation: Clearing land for agriculture, mining, and forestry has led to the loss of large areas of the Amazon. This not only reduces biodiversity, but also reduces the forest’s ability to sequester carbon and regulate climate.
Monoculture Farming: Large-scale monoculture farming, often involving soy, beef, and palm oil production, can deplete soil, harm water quality, and contribute to deforestation.
Land Grabbing: Indigenous communities and local peoples are often displaced from their traditional lands to make way for agricultural expansion, leading to social and cultural disruption.
Sustainable and Regenerative Agriculture as a Solution
Sustainable and regenerative agricultural practices oNer a glimmer of hope in the fight to protect the Amazon Rainforest. These approaches prioritize ecological protection and responsible land use:
Agroforestry: Integrating trees and a variety of crops into the same landscape not only preserves forest cover, but also increases soil fertility and provides a sustainable source of income for local communities.
No-Tillage Agriculture: Reducing or eliminating tillage helps prevent soil erosion and degradation, preserving the Amazon’s fertile soils.
Indigenous Land Rights: Recognizing and respecting the land rights of indigenous communities helps preserve the Amazon by allowing them to continue traditional land management practices that are often more sustainable.
The Amazon Rainforest and Diversity
The ecological importance of the Amazon Rainforest cannot be emphasized enough. Its role in preserving biodiversity and regulating the global climate is essential to all life on Earth. To ensure the long-term health of this invaluable ecosystem, it is imperative that we transition to sustainable and regenerative agricultural practices while addressing deforestation and land grabbing. By doing this we can protect the Amazon Rainforest and ensure a more sustainable future for our planet.
According to Greenpeace, as an ecosystem, the Amazon is one of the most biodiverse places on Earth. More than 3 million species live in the rainforest, and more than 2,500 species of trees (or a third of all tropical trees in the world) help create and sustain this vibrant ecosystem.
Drivers of Biodiversity Loss
Species extinction is occurring at unprecedented rates, a thousand times faster than what would happen naturally. According to a recent report by IPBES (Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services), an estimated 1 million species are currently at risk of extinction. This rate has increased dramatically over the last 40 years, and there are threatened and vulnerable species across taxa.
In the Amazon, species are becoming increasingly threatened as human activity pushes deeper into the rainforest. From August 2018 to July 2019, the Amazon lost more than 3,800 square miles of forest—the equivalent of 1.8 million football fields—and represents the highest rate of deforestation in a decade. Biodiversity loss from habitat destruction is often driven by land grabbing and industrial agricultural expansion, mining, logging, and large-scale infrastructure development, often through deforestation. To make matters worse, deforestation has accelerated on indigenous lands and protected areas in recent years.
Industrial agricultural expansion, including large industrial crops such as soy and cattle, often requires clearing forested areas and converting land to more permanent agricultural use. Industrial agricultural systems, such as those based on plantations, have little biodiversity, and the application of pesticides can also impact nearby ecosystems and human communities due to runoN aNecting the wider habitat.
Mining operations penetrate deep into the forest, increasing the demand to build infrastructure (such as roads) and deforestation of important habitats. Both small-scale and large-scale mining projects pose a major risk to water and soil, given the risk of toxic leaks. Mining also extends into protected areas such as Indigenous Lands and Conservation Units, and into large wildlife refuges. Logging can also harm biodiversity. Greenpeace has long investigated how logging supply chains, including for high-value woods such as Ipê, can be rife with fraud, corruption and illegally laundered timber originating from protected areas
and Indigenous reserves. Furthermore, a large-scale industrial timber plantation replacing a natural forest area would be far less biodiverse and would be equivalent to an agricultural “monocrop“.
Infrastructure includes roads, power, transport networks, and other large-scale projects. BR 163 is a highway in the state of Pará (PA) that cuts into endangered species´ habitats and has made the surrounding area subject to deforestation and habitat destruction. Other infrastructure, like hydropower dams, can deeply disrupt habitats and aNect the environment, people, and biodiversity in their surroundings by isolating species and contaminating the water.
Risks and Tipping Points
The loss of biodiversity can throw an entire ecosystem — and the resources it provides — out of balance. It can even threaten its ability to sustain itself. One concerning example of this is the growing likelihood of massive-scale deforestation causing the Amazon rainforest to reach a “tipping point.” This means that the hydrological cycle would be disrupted to the point that it triggers a massive forest “die-back” that could turn vast areas of the rainforest into a savannah, and with it lose immeasurable amounts of biodiversity.
Furthermore, there are additional risks to destroying habitats, such as the increasing prevalence of zoonotic disease. Deforestation may increase the risk for disease outbreaks and can introduce new ways for zoonotic diseases to reach human communities and amplify their ability to jump across species. The Amazon rainforest has been identified as a region with a high likelihood for future zoonotic disease emergence.
Spotlight: Hyacinth Macaw (Anodorhynchus hyacinthinus)
The Hyacinth Macaw exists naturally in the Amazon, Cerrado, and Caatinga biomes; however agricultural expansion, illegal logging, and the advancement of cities have drastically reduced their habitat. Today it exists only in small areas of these biomes, and the species is classified as Vulnerable by the IUCN (International Union for Conservation of Nature). In the Amazon, there are still sightings in central Pará, the epicenter of deforestation in the biome. In 2019, the area of deforestation reached 203,460 hectares in this region.
What is being done to protect biodiversity globally and in the Brazilian Amazon? Some of the most important things we can do to protect biodiversity are:
Protecting Indigenous people and their rights and enforce existing protections: Nearly one million Indigenous people in Brazil call the Amazon rainforest their home. Indigenous communities have a right to their livelihoods in their territories, and it is our global responsibility to push back when their protections and livelihoods are put at risk and violated. There’s been a steady rollback of environmental protections and enforcement
under the Bolsonaro government that is harming Indigenous communities, which has only continued under COVID-19 and leading deforestation and habitat destruction.
Promoting greater science, research, and understanding on biodiversity, especially for Brazilians: In the last four years there’s been over 600 new species of plants and animals discovered in the Amazon. Too often, these species are discovered after their habitats have been encroached upon, when they are already at risk. We need to invest more in scientific research programs — like the Tatiana de Carvalho Program, a Greenpeace Brazil scholarship program for students researching the Amazon. Without proper study, we can’t know how or what we’re losing or risking when we introduce radical shifts into the environment.
Rethinking how we interact with biodiversity and nature and address the harm already caused by our current systems: In the US, this will mean re-thinking if what we consume or produce is based on sourcing practices that are often detrimental to delicate ecosystems. Destroyed forests and fragmented habitats can be restored, and there are alternatives to the industrialized food systems that are harming biodiversity, local communities, workers, and consumers. By protecting biodiversity, we can also have positive eNects on forests, the climate, and communities around the globe.
Spotlight: Milton’s Titi (Plecturocebus miltoni)
First catalogued in 2014, this primate species only exists at the intersection of the Roosevelt and Aripuanã rivers in the states of Mato Grosso and Amazonas, Brazil. From January to September 2019, 204 fire hotspots were recorded within a radius of up to 30 kilometers from where the species lives. Over the past year, the region has lost 3,130 hectares of forest. Because it lives exclusively in the treetops, the loss of forest cover is fatal for this species. Its main threats are fires and forest degradation.
Conclusion
2020 was set to be a big year for nature and biodiversity. The Convention on Biological Diversity (CBD) was set to reset their 10-year priorities for protecting nature and biodiversity. Unfortunately, many of the Aichi Targets fell short — including Target 11 to bring more terrestrial, inland water, and marine areas into protected or conservation status. This means we need even bigger and bolder action to protect nature.
While there have been some promising steps for corporate actions and government policy signals for forests and the climate — such as zero-deforestation commitments, moratoriums, streamlining climate into trading agreements, and increasing the area under protection and conservation — many commitments have not yet translated to eNective action, and the successes are under threat or only partially implemented.
Our current path is not sustainable. We need to follow through on our commitments, and reconsider our relationship to biodiversity and nature. It’s becoming more and more clear that if we fail to protect nature, we’ll only further compromise nature’s ability to provide for us and our collective well-being.
Amazon People
Indigenous groups such as the Yanomamo and Kayapo have lived in the Amazon for thousands of years, slowly gathering detailed knowledge about the rainforest and the ways it makes a living. But today, they must share the forest with a growing number of settlers who aim to exploit the Amazon’s significant natural resources.
Life in the Rainforest
By some estimates, the first human settlements in the Amazon date back 32,000 to 39,000 years. Since then, Amazonian people have developed lifestyles that are well integrated with the benefits and limitations of the rainforest. Typically, local game includes fish, and wildlife found close to rivers, such as turtles, capybaras, and crocodiles. Until recently, blowguns, poisoned arrows, and spears were common for hunting game, but these primitive weapons have been increasingly replaced by guns when they can be aNorded.
Hunter-gatherer groups were once largely nomadic, living in small temporary settlements for 4–5 years until all natural resources were depleted—then migrating.
However, due to land colonization by non-native peoples, many indigenous groups were forced into sedentary lifestyles and became peasants. Such changes not only destroyed traditional lifestyles, but also caused indigenous people to lose control over their lands. The beneficiaries were loggers, gold miners, and other colonizers. Some hunter
gatherer tribes were once highly territorial. For example, the Mundurucu headhunters of Brazil hunted animals and humans indiscriminately. They raided neighboring groups to seize women and protect their lands.
Amazonian People and Religious Beliefs
The spirit world is extremely important to the indigenous people of South America, a world they claim to be intimate with by using plants that contain certain hallucinogens. One of the most important figures to many indigenous groups is the shaman, who is believed to have knowledge of local plants and animals and to communicate with the spirit world.
The Impact of European Colonizers on Humans in South America
When Europeans first arrived in South America, there were approximately 6.8 million indigenous people. However, the colonizers brought cruelty, slavery, and diseases to which the native people were not immune. Communities living close to rivers were the first to be aNected, as colonizers used them as avenues of attack. Indigenous peoples living in the forests were initially spared many of the worst aspects of this European onslaught.
Situation Today
Today, most Native American tribes live in indigenous reserves called resguardos, where they practice a lifestyle that combines both traditional and modern elements. A few live completely isolated from the modern world. For example, some make a living from tourism and/or must visit local markets to support the produce they grow in their herb gardens. In Brazil, indigenous people have directly participated in the demarcation of their lands, ensuring that the boundaries respect traditional uses. As a result, traditional lands in Brazil are not called resguardos but “indigenous lands.”
Indigenous Communities Protect the Amazon
About 1.5 million indigenous people live in the Amazon rainforest in South America. While deforestation and fires have eroded the iconic forest in recent years, indigenous communities are helping to preserve some of its most intact parts. Healthy, standing forests breathe out carbon dioxide and store it in their trunks, branches, and roots. But when trees rot after being cut down or burn in a fire, they release that carbon back into the atmosphere. While the Amazon is still a net carbon sink (capturing 100 million metric tons of carbon dioxide per year more than it emits), it is on the verge of becoming a net carbon source. Over the past 50 years, an estimated 17% of the Amazon rainforest has been lost.
About 385 indigenous groups live in about 1.5 million square miles of the Amazon. A growing body of research shows that these groups are advocates against deforestation and are protecting some of the most carbon-rich parts of the Amazon. “Indigenous communities are the unsung heroes of conservation, and many are actively monitoring their forests”, said Peter Veit, a senior fellow at the World Resources Institute (WRI). Veit led research published in January 2023 that found that forests managed by indigenous and other communities between 2001 and 2021 were net carbon sinks, while forests not managed by indigenous and other communities were net sources of carbon on average.
The research built on previous work led by WRI that mapped the carbon taken up or emitted by forests around the world using data from Landsat satellites and NASA’s ICESat (Ice, Cloud, and Land Elevation Satellite) mission. That study found that forests globally absorbed about twice as much carbon as they emitted between 2001 and 2019, but that some forests were much bigger carbon sinks than others. For example, forests in the Congo River basin in Central Africa capture 610 million tonnes more carbon dioxide per year than they emit, six times more than the net carbon sink of forests in the Amazon River basin.
In Brazil, forests outside community protections are being lost to commercial farming and cattle ranching, extractive industries, infrastructure, and other developments. The map above shows biomass data from NASA’s GEDI (Global Ecosystem Dynamics Investigation) mission in the Brazilian state of Rondônia, one of the most deforested regions in the Amazon. In the western part of the state, the lands of the Uru-Eu-Wau-Wau Indigenous community stand out as one area of concentrated biomass.
Further deforestation threatens to turn the Amazon from a net carbon sink to a source. WRI is working with indigenous communities to help them use Landsat-based Global Forest Monitor data to monitor forests and alert them to deforestation. A 2021 analysis found that after 36 indigenous communities in the Peruvian Amazon used these satellite-based alerts, deforestation rates dropped by 52% in one year.
Sources:
https://www.sustainableagriculture.eco/post/the-ecological-importance-of-the-amazon rainforest-and-the-role-of-sustainable
agriculture#:~:text=Biodiversity%20Hotspot,biodiverse%20regions%20in%20the%20world https://www.greenpeace.org/usa/biodiversity-and-the-amazon-rainforest/
https://wwf.panda.org/discover/knowledge_hub/where_we_work/amazon/about_the_ama zon/people_amazon/
https://earthobservatory.nasa.gov/images/151921/indigenous-communities-protect-the amazon