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Question

How is Climate Change Threatening Tropical Rainforests?

9 months ago

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42 Replies

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2699 views

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Suryanshu

I would like to know more about how climate change is threatening tropical rainforests and what the impacts are on it’s structure, functioning and biodiversity


42 Answers

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Emily Hales

Climate change poses significant threats to tropical rainforests, impacting their structure, functioning, and biodiversity in various ways:


  1. Increased Temperature: Rising temperatures associated with climate change can disrupt the delicate balance of tropical rainforest ecosystems. Higher temperatures can lead to increased evaporation, drying out the forest and making it more susceptible to wildfires. Additionally, warmer temperatures can alter the distribution and abundance of plant and animal species adapted to specific temperature ranges.
  2. Altered Precipitation Patterns: Climate change is expected to bring changes in precipitation patterns, including shifts in rainfall timing, intensity, and distribution. This can lead to droughts or floods, both of which can have detrimental effects on tropical rainforest ecosystems. Droughts can weaken trees, making them more vulnerable to diseases and pests, while floods can cause erosion and soil degradation.
  3. Extreme Weather Events: Climate change is increasing the frequency and intensity of extreme weather events such as hurricanes, cyclones, and storms. These events can cause widespread damage to tropical rainforests, including uprooting trees, breaking branches, and disrupting wildlife habitats. The recovery time for forests following such disturbances may be prolonged, further exacerbating the impacts of climate change.
  4. Changes in Species Distribution: As temperatures rise and precipitation patterns shift, the geographic ranges of plant and animal species within tropical rainforests may also change. Species adapted to specific climatic conditions may be forced to migrate to higher elevations or latitudes in search of suitable habitats, leading to shifts in species composition and ecological interactions within the ecosystem.
  5. Loss of Biodiversity: Climate change poses a significant threat to the rich biodiversity found in tropical rainforests. Species that are unable to adapt or migrate to new habitats may face population declines or even extinction. Loss of biodiversity can have cascading effects on ecosystem functioning, including disruptions to nutrient cycling, pollination, and seed dispersal processes.
  6. Feedback Loops: Climate change can trigger feedback loops within tropical rainforest ecosystems, further exacerbating its impacts. For example, deforestation and forest degradation, often driven by human activities such as logging and agriculture, release carbon dioxide stored in trees into the atmosphere, contributing to global warming. As temperatures rise, the ability of tropical rainforests to sequester carbon may be compromised, leading to even more carbon emissions and further warming.


Overall, the impacts of climate change on tropical rainforests are complex and multifaceted, with far-reaching consequences for their structure, functioning, and biodiversity. Addressing climate change and implementing measures to mitigate its effects are crucial for the long-term survival and conservation of these vital ecosystems.

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Harry Burns

More carbon dioxide emissions in the atmosphere. More carbon is taken out of the rainforest where 20% of whole earthly carbon is stored. It gets taken into the atmosphere without the carbon beinh replenished into the carbon cycle to the rainforest. This leads to trees dying and more CO2 in the atmosphere.

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Nimrod Morwood

Climate Change is affecting rainforests in a number of ways, many of which are detrimental to the healthy functioning of rainforest ecosystems especially in their capacity as a carbon sink.

For example, in terms of biodiversity and climate stabilisation:

When rainforests regions are affected by temperature increases the forests become more susceptible to forest fires and thus when fire events occur these can be detrimental to the biodiversity of the region and the wider functioning of the rainforest.

When trees die in the rainforest, whether it be due to deforestation, forest fire events or forest die-off due to trees being unable to adapt to new temperatures it creates a positive feedback loop. Trees act to transpire water they receive back into the atmosphere which creates a cycle of rainfall events that feeds the rainforests healthy functioning. When there are less trees, there is therefore also less rainfall.

The rainforest can only be pushed so far, It is a tipping point which means that it wiull be permanently altered if a certain amount of pressure is put on it. It is predicted that if rainforests lose 20-25% of their trees due to changing temperatures, forest fires or deforestation a Savannah like climate will be created and desertification will ensue Brazils rainforest

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Sarah Lebaigue

Climate change is affecting the rainforest in a number of ways which subsequently has a knock on effect with the rest of our planets health. Climate change is a catch all term that describes a number of issues causing global environmental changes. An example is the global temperature rising by approximately a degree each year. This temperature increase causes icebergs to melt which impacts sea levels, areas around the world to be affected by wild fires and other natural disasters like floods and landslides to become more prevalent.


The climate of a tropical rainforest requires several factors to keep its equilibrium, some of these being; a warm heat, frequent rainfall and humid condition. Due to the shift in global climate change the rainforests, like all ecosystems, are experiencing significant changes which then cause a negative cyclical cycle to begin. A rainforest like the Amazon in Brazil are ecosystems filled with countless species of animals, organisms and plant life. Their habitat functions with symbiotic relationships amongst every part in the food chain. The biodiversity within a rainforest has been documented to be the most vibrant and wide ranging than any other environment. The plant life impacting the oxygen and carbon dioxide emissions in our atmosphere but the animals and other organisms are supporting the plant life.

The rainforests are an important factor to regaining a healthy global ecosystem. Tropical rainforests flourish with flora and fauna and they provide the most CO2 collection. As the rainforests are destroyed whether by deforestation and other human activities or by climate change this will create a domino effect that could worsen with growing natural disasters.

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India Thompson

Evapotranspiration is reduced meaning less clouds form and less rainfall occurs. It has also been proven that rainfall it becoming more sporadic and there are larger downpours over a shorter period which afftects plant reproduction and growth. Some plants may not be able to adapt to the changing climate and may die in coming years. With some extinction there will likely be increased competition and therefore predation between species altering the balance of the ecosystem

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Amelia Cunnington

Climate change poses a series of threats to tropical rainforests, impacting their structure, functions n biodiversity in a variety of ways:


  1. Temperature increase: current climate change is associated with an increasing global temperature which will impact the conditions within a topical rainforest, such biodiversity due to the specific adaptations organisms require to live in a tropical rainforest. Changes in biodiversity can have a series of secondary effects such as alterations in food webs, or extinction of species.
  2. Changes in rainfall: climate change can result in changes in rainfall patterns which will disrupt the water cycle in rainforests. Increased or decreased rainfall in a tropical rainforest will affect growth, reproduction and survival of organisms.
  3. Increased frequency and intensity of extreme weather events:  tropical rainforests are vulnerable to extreme weather events such as hurricanes, cyclones, and storms. Climate change is projected to increase the frequency and intensity of these events, leading to widespread forest damage, habitat fragmentation, and loss of biodiversity.
  4. Changes in species distribution: as climate conditions change, species may migrate to more suitable habitats, leading to shifts in the distribution of plant and animal species within rainforests. This will disrupt ecological interactions, such as pollination and seed dispersal, resulting in changes to the structure and functioning of the ecosystem.
  5. Increased vulnerability to pests and diseases: warmer temperatures and changes in rainfall patterns can create favourable conditions for new pests and diseases within tropical rainforests. This can lead to outbreaks of insect infestations, fungal diseases, and other pathogens, which can devastate plant and animal populations.
  6. Impacts on carbon storage and climate regulation: tropical rainforests play a crucial role in regulating the global climate via carbon capture. Climate change can disrupt this process by increasing the frequency of forest disturbances, such as wildfires and droughts, and reducing the capacity of rainforests to act as carbon sinks.
  7. Loss of biodiversity: climate change exacerbates the threats already faced by tropical rainforest biodiversity, including habitat loss, overexploitation, and invasive species. 
O
Oskar

Think of tropical rainforests as Earth's green treasure chests, packed with vibrant life and crucial for our planet's health. Now, climate change is like an unwanted guest causing a lot of trouble in these rainforests.

  1. Structure: Climate change, especially in the form of increased temperatures and altered rainfall patterns, can weaken the structure of rainforests. Trees may grow differently, some may die off, and this can lead to changes in the forest canopy – the upper layer of leaves. This canopy is vital because it provides shelter and regulates the temperature and humidity of the forest below.
  2. Functioning: Rainforests are excellent at absorbing carbon dioxide, a key greenhouse gas, and producing oxygen. Climate change can disrupt this balance. If trees are stressed or die due to changing conditions, the rainforest's ability to absorb carbon diminishes, leading to more carbon in the atmosphere and further climate change.
  3. Biodiversity: Tropical rainforests are home to an incredible diversity of species. Climate change can make it harder for plants and animals to survive. Some species may not adapt quickly enough to changing temperatures or may lose their habitat altogether. This can lead to a loss of biodiversity, which means fewer plants and animals, and disrupts the whole ecosystem.

So, in a nutshell, climate change is a big threat to tropical rainforests, affecting their structure, how they function, and the rich variety of life they support. By understanding these impacts, we can better appreciate the need to protect these vital ecosystems!

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Muhammad F

Climate change means that temperatures fluctuate, more upwards. This will lead to loss of biodiversity since the animals in tropical rainforests are not adapted to the new temperatures which will eventually kill them as they cannot survive in their habitats due to rapid changes. Higher temperatures mean that plants and animals will deal with heat stress. This will weaken the forest structure and cause trees to die and form gaps in the canopies. This structure weakening will lead to a loss of habitat and food for organisms and this will eventually cause them to die, leading to less biodiversity. The function of tropical rainforests include nutrient cycling, carbon cycling and water cycle regulations. Increasing temperatures can reduce the ability of the rainforests to absorb and store carbon dioxide. This will reduce their effectiveness in carrying out their functions properly. The loss of regulation of carbon dioxide, water and various nutrients means that all organisms including plants and animals will find it extremely difficult to access their required nutrients water and any carbon dioxide needed for internal reactions. Therefore, in conclusion, climate change will lead to loss of biodiversity, loss of its function and its structure.

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Climate change poses many threats to tropical rainforests which in turn have many complex socio-economic impacts on human life. Tropical rainforests are already characterised by their hot temperatures and large amounts of precipitation, but climate events are becoming more extreme due to climate change meaning that there will likely be hotter temperatures and unpredicted amounts of rainfall. This change in climate may make it hard for many species of flora and fauna to survive, including plants used by humans such as palm oil (which comes from palm trees) or bananas. This is just one example of the many complex chain of impacts of climate change on tropical rainforests.

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S
Sam Hill-Cousins

Hi Suryanshu,


This is a great question, and a really important one too! Whilst a big focus of conversation around tropical rainforests and climate change is usually on how deforestation adds to the effects of climate change, the rainforests themselves are impacted by these effects too. Many of the species in a tropical rainforest are adapted to certain climatic conditions like temperature and of course rainfall. With increased temperatures, delicate biological systems are disrupted, for instance some reptile species produce too many of one sex when reproducing. Similarly the interactions between species can also be affected, for instance Chytridiomycosis, a fungal disease of amphibians (frogs, toads, etc.) is causing mass declines in tropical rainforests, and the effects of climate change are thought to be worsening its prevalence.

In addition the Amazon Rainforest itself, experienced its worse drought in half a century this year, and studies causing vegetation like trees to die as it struggles to recover.

Whilst a drought like this would be harmful to any forest, the Amazon rainforest is already under immense pressure from deforestation.

Whilst these effects on their own are serious, healthy, resilient ecosystems could cope, however the combined stresses of climate change mixed with the various pressures humans exert in other ways, is often too much.

While this is just a brief glimpse of the issues, there is much more to learn and of course there are also solutions too and I encourage you (if interested) to seek out your own research using websites like conservation.org or WWF.

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Suzie Yassin

How is Climate Change Threatening Tropical Rainforests?


Climate change refers to significant and lasting changes in the Earth's climate patterns over extended periods, typically decades to millions of years. It involves alterations in temperature, precipitation, wind patterns, and other aspects of the climate system. While climate change can occur naturally through processes like volcanic eruptions, ocean currents, and variations in solar radiation, the current trend is predominantly driven by human activities such as the burning of fossil fuels, deforestation, and industrial processes. This essay will explore how climate change is threatening tropical rainforests through altered weather patterns, increased frequency of extreme weather events, and disruptions in biodiversity.


One of the primary ways climate change threatens tropical rainforests is through altered weather patterns. Tropical rainforests rely on consistent rainfall and stable temperatures to maintain their unique ecosystems. Evidence shows that climate change is causing shifts in these patterns, leading to prolonged droughts in some regions and excessive rainfall in others. For example, the Amazon rainforest has experienced severe droughts in recent years, disrupting the water cycle and stressing plant (flora) and animal (fauna) species.  In 2022, the Amazon continued to experience drought conditions, particularly affecting the southern Amazon basin, with significant impacts on river levels, forest fires, and biodiversity. These changes can cause trees to die off, reducing the forest's ability to sequester carbon and exacerbating the effects of global warming. This is an important argument because the long-term trend of increased drought frequency and severity means that there is a threat to 20% of oxygen that the Amazon rainforest offers. Therefore, altered weather patterns due to climate change directly undermine the sustainability of tropical rainforests.


In addition to altered weather patterns, the increasing frequency and intensity of extreme weather events pose a significant threat to tropical rainforests. Hurricanes, cyclones, and other extreme weather events have become more common and intense due to climate change. For instance, studies have shown that hurricanes in the Atlantic are becoming more powerful and frequent. These storms can cause massive destruction in tropical rainforests, uprooting trees, destroying habitats, and disrupting ecosystems. The damage from such events can take decades to recover from, if at all, significantly reducing the resilience of these forests. This is an important point to consider because a loss in biodiversity and an effect on both food chains and webs which is further considered as problematic because the Amazon is known to be home to 427 mammal species, 1,300 bird species, 378 species of reptiles, more than 400 species amphibians and more species are being discovered each year. If weather patterns change over a long period of time this will have a negative effect on these species causing them to be extinct, endangered and some undiscovered.

The decrease in species richness and evenness has negative environmental impacts but also socio-economic impacts due to the tropical rainforest providing humans with medicines to improve ill-health and provides factories with resources for buildings, furniture, and medicine. Thus, illustrating the instant and long- term negative environmental, social, and economic impacts of extreme weather events driven by climate change are a formidable threat to the integrity of tropical rainforests.


In conclusion, climate change poses a severe threat to tropical rainforests through altered weather patterns, increased frequency of extreme weather events, and disruptions in biodiversity. These factors collectively undermine the health and stability of these vital ecosystems, which play a crucial role in regulating the Earth's climate and supporting a vast array of life forms. Protecting tropical rainforests from the impacts of climate change is essential for maintaining global ecological balance and ensuring the survival of countless species. Immediate and sustained action is required to mitigate climate change and preserve these irreplaceable natural treasures.

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Arshdeep Singh

This is a topic covered in GCSE geography. The rainforests in Malaysia and Brazil are at risk from climate change because the biodiversity is reducing as deforestation occurs and animals migrate. Also with the weather changing, heavy rainfall and low sunlight, this reduces their growth and impact on the rainforest negatively

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