Rivers are undoubtedly an integral part of human evolution and our entire collective history. The world’s freshwater rivers have paved the way for some of the greatest civilizations we know of. But in addition to being known for its strengths, rivers are equally responsible for flooding that destroys civilization.
Flooding events are now becoming more common, adverse impact of climate change Take control of the world. These flood events have long been known to be directly or indirectly linked to biodiversity loss. Therefore, understanding these connections is now more important than ever. So let’s dig into the details for a more nuanced look at the topic.
Floods: an overview
Before we dive into more details about floods, it’s important to clarify that any spillage of water onto normally dry land is considered flooding. These events can occur anywhere, but low-lying areas such as coastal areas and river beds are generally more susceptible to them. Also, some floods may only bring a few inches of water, while others may bring enough water to submerge a house.
The speed and volume of flood water generally depend on the cause of the flood. Some of the most common causes of flooding include heavy rain, storm surges, rapid melting of snow or glaciers, or even dam breaches. Based on these factors, flood events can last from days to weeks or even longer. These events can also have positive effects, such as enriching the soil with renewed nutrients, but in most cases they do more damage than good.
As such, authorities and stakeholders are now working to mitigate the effects of these floods.In some cases, they use very advanced flood detection In addition to using other methods to mitigate losses, they can use other strategies to achieve their goals. Therefore, efforts to understand flood events and take steps to manage their adverse effects become very important.
Floods and their impact on biodiversity
The evolution of this precious planet we share has been far more complex and subtle than most imagine. Every ecosystem is associated with its biodiversity, another vulnerable component of nature. Flood events can greatly affect biodiversity, so let’s look at them to understand them better.
Floods and Wildlife
A close look at the planet’s wildlife can give us a better understanding of nature’s wonders. However, it is also important to note that wild ecosystems are fragile; even a single flood event can be violent. In many cases, flooding has had a huge impact on wildlife in a given area, especially because of drowning.
if you track Kaziranga National Park in Assam is flooded every year, India. These floods are annual, but also very unpredictable, causing much damage to terrestrial and aquatic life. In this specific case of Kaziranga, deer, elephants, endangered rhinos, and even fish have all lost a lot to these floods. So the loss of biodiversity is very evident here.
Floods lead to erosion and deposition
A fertile soil layer is the cornerstone of any kind of biodiversity, whether terrestrial or aquatic. This is why we can find greater biodiversity on the coastline than in the deep sea. However, flooding does not cause as much biodiversity loss on coastlines as it does on land.
Floods carry large amounts of sediment that have an unparalleled potential to degrade water quality and promote harmful algae growth. In addition to this, these flowing sediments can end up depositing along river banks and even clogging streams and riverbeds. This can further damage habitats and even suffocate aquatic life. But more importantly, these depositions and erosions can damage the overall biodiversity of a given area.
Floods and Pollutants
Another important issue associated with flood events is that they bring large quantities of pollutants and pollutants. These pollutants include debris, industrial chemicals, pesticides, and even sewage. When these pollutants reach the ocean, they can cause serious harm to aquatic life along freshwater rivers and marine aquatic life.
The depletion of biodiversity in the Great Barrier Reef off the coast of Queensland, Australia, is a case in point. The Great Barrier Reef has long been known to host a rich and diverse range of life forms, making way for a rich ecosystem. But unfortunately, harmful and polluting floods have completely depleted the area of life forms. Sadly, the entire process of depleting the region took less than seven years.
Floods trigger migration and breeding events
A final noteworthy link between flood events and biodiversity comes in the form of triggering migration and breeding events. In some cases, flood events have also been known to cause the spread of certain species in different regions. For example, flooding in 2016 inundated the wetland habitat of the Macquarie Marshes, triggering a massive flood event.
Apart from this, the Kaziranga National Park in Assam, India, witnessed a massive migration of animals to the hilly area of Karbianglong during floods. But unfortunately, a large number of animals in the park failed to make this journey. Some perished in the floods, while many others perished after contact with humans. This also includes animals killed while traversing state roads along the park.
Bottom line: what can we do?
In just a few centuries, we humans have wrought unparalleled damage to the environment. It is therefore wise that we take all steps now to mitigate the effects of adversity from nature.
Taking a community-driven approach, proactive decision-making and promoting local ecosystems and biodiversity are some of the best things we can do here. So please do your part to make the world a better place for future generations.
