Alexei Volkov
Plastic pollution is one of the greatest threats to wildlife around the world. It is estimated that 1 million seabirds die from ingesting plastic every year. This number is expected to grow, with projections showing that 99% of seabird species will be ingesting plastic by 2050. This is due to the sheer scale of global plastic production, with 8 million tons of plastic entering the ocean annually. Plastic is designed to last, yet it is often discarded, leading to lethal cases of ingestion and entanglement.
| Characteristics | Values |
|---|---|
| Number of birds killed by plastic annually | 1 million |
| Number of plastic pieces in the oceans | 15-51 trillion |
| Number of plastic tonnes entering the ocean annually | 8 million |
| Number of plastic pounds entering the ocean annually | 17.6 billion |
| Percentage of seabirds with plastic in their stomachs in 1960 | <5% |
| Percentage of seabirds with plastic in their stomachs in 1980 | 80% |
| Percentage of Laysan Albatross chicks dying before fledging due to plastic ingestion | 40% |
| Percentage of albatross chicks dying annually due to plastic ingestion | 33% |
| Percentage of seabirds estimated to have plastic in their guts | 90% |
| Percentage of seabirds ingesting plastic projected by 2050 | 99% |
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What You'll Learn
Birds mistake plastic for prey
Plastic pollution is one of the greatest threats to wildlife around the world. Birds are highly vulnerable to changes in their external environment, and their exposure to plastic can be used to estimate the negative effects of environmental pollution.
Every year, an estimated 1 million birds die as a result of plastic pollution. This problem has grown exponentially. In the 1960s, less than 5% of birds were found with plastic in their stomachs. By 1980, this number had increased to over 80%. It is projected that by 2050, 99% of seabird species will be ingesting plastic.
Additionally, adult birds that leave their nests to hunt often return with plastic that they have mistaken for food. They then feed this plastic to their chicks, which are unable to regurgitate the plastic pieces and often die as a result. Plastic ingestion reduces the volume of the stomach, leading to starvation and malnutrition. It can also cause physical damage, such as perforation and blockage of the gut, and introduce toxic chemicals, including endocrine-disrupting chemicals (EDCs), into the birds' bodies.
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Plastic ingestion leads to starvation
Plastic is one of the greatest threats to wildlife around the world. It is estimated that one million birds die as a result of plastic every year. This problem has grown exponentially. In the 1960s, less than 5% of birds were found with plastic in their stomachs. By 1980, this number had increased to 80%. It is projected that by 2050, 99% of seabird species will be ingesting plastic.
The ingestion of plastic can also cause dietary dilution, impairing the feeding and growth of birds. Chicks are particularly vulnerable to the effects of plastic ingestion. Adults often mistake plastic debris for prey and feed it to their chicks, who are unable to regurgitate the plastic pieces and may starve as a result.
Furthermore, plastic can introduce an array of toxic chemicals, including endocrine-disrupting chemicals (EDCs), into the birds' systems. While the toxicological effects of microplastics on birds are not yet fully understood, studies have shown that plastic ingestion can cause higher frequencies of male reproductive cysts and delays in chick growth and sexual maturity. The presence of plastic can also impact kidney function, leading to higher concentrations of uric acid and negatively affecting cholesterol and enzyme levels.
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Plastic affects kidney function
Plastics are synthetic polymers that have become an integral part of our daily lives, with applications spanning from packaging materials to construction. Unfortunately, the ubiquitous use of plastics has led to a significant environmental concern: plastic pollution. Plastic pollution not only affects the environment but also has far-reaching consequences for human health. One of the critical organs impacted by plastic pollution is the kidneys.
The kidneys are a pair of bean-shaped organs located on either side of the spine below the rib cage. They play a vital role in maintaining overall health by filtering waste and excess fluid from the blood to produce urine. Recent studies have revealed that microplastics, tiny plastic particles measuring between 1 micrometre and 5 millimetres in size, can accumulate in the kidneys and disrupt their normal functions.
Microplastics enter our bodies through various ingestion routes, including drinking water, seafood, honey, and other contaminated food sources. Once ingested, these particles can translocate from the gut to the bloodstream and eventually reach the kidneys. The accumulation of microplastics in the kidneys has been observed in both animal models and human studies.
In animal studies, microplastics have been shown to induce oxidative stress, inflammation, and nephrotoxicity in kidney cells. These adverse effects can lead to histopathological damage, altered metabolism, and cellular stress, ultimately impairing the overall function of the kidneys. Similar effects have been observed in human kidney cells exposed to microplastics in vitro, indicating a potential risk to human health.
The impact of plastic pollution on kidney function underscores the urgent need for stricter regulations and environmental reforms to limit the presence of microplastics in our communities. While further research is required to fully understand the complex interactions between plastic particles and kidney health, the existing evidence highlights the importance of reducing plastic pollution and its potential impact on human wellbeing.
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Plastic entanglement
Plastic pollution is one of the greatest threats to wildlife around the world. Marine debris, defined as solid, human-made trash in the marine environment, is often plastic-based. This plastic trash is a major threat to sea- and shorebirds, claiming the lives of countless birds annually.
Fishing gear is responsible for entangling most species (83%), and abandoned fishing gear is one of the worst offenders when it comes to ensnaring birds. In Queensland alone, it is estimated that 35 traps are lost per boat per year for blue swimmer crab fishing, and around the world, 27% of all marine litter consists of lost nets, lines, and traps. This discarded equipment continues to catch wildlife in a phenomenon known as 'ghost fishing'.
The impacts of plastic entanglement include injury, impeded mobility, and drowning. Entangled pieces of plastic can dig into birds' skin, causing cuts, infection, and even loss of a limb. Entanglement can also hamper a bird's ability to hunt, escape predators, and provide for its young.
The sheer scale of global plastic production means that no species are beyond its reach. In Australia alone, almost 3 million tonnes of plastic are manufactured annually, but only 12% is recycled. Plastic is typically light and buoyant, allowing it to easily float in water or be carried by the wind. It does not decompose easily and is bound to persist in the environment for a long time.
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Plastic is a magnet for toxic chemicals
Plastic is one of the greatest threats to wildlife around the world, with an estimated one million birds dying as a result of plastic every year. This problem has grown exponentially, with less than 5% of birds found with plastic in their stomachs in the 1960s, increasing to over 80% in the 1980s. It is projected that by 2050, 99% of seabird species will be ingesting plastic.
Plastic is a significant hazard to birds due to its lightweight and buoyant nature, making it easily ingestible and entangling. Additionally, plastic serves as a magnet for toxic chemicals, further exacerbating its detrimental impact on the environment and wildlife.
Plastic pollution is not limited to a specific location but can be found even in remote areas, such as Midway Atoll, located over 2,000 miles from the nearest continent. This atoll is home to the world's largest albatross colony, where approximately one-third of the albatross chicks perish annually due to plastic ingestion. The adult birds mistake colourful plastic pieces for prey, feeding them to their chicks, who are unable to regurgitate the plastic and succumb to its fatal effects.
The issue of plastic pollution extends beyond the immediate harm it causes to birds and other wildlife. Plastic acts as a magnet for toxic chemicals, posing a significant threat to the environment and human health. Pollutants in the environment have an affinity for plastic, attaching themselves to it in a similar manner to iron being attracted to a magnet. Additionally, chemicals added to plastics during production to enhance their properties can leach out, further contaminating the environment.
Furthermore, plastic provides an ideal habitat for the growth of microscopic organisms, such as Vibrio species, which can cause diseases like cholera. This poses risks to both humans and animals in areas with significant plastic waste and inadequate sanitation measures. The persistence of plastic in the environment, coupled with its ability to transport bacteria, underscores the urgency of addressing this global issue.
To address the plastic pollution crisis, innovative solutions are being developed, such as the use of Natural Deep Eutectic Solvents (NADES). These solvents, derived from natural sources like plants and coconuts, effectively capture and remove microscopic plastic particles from water. NADES offer a targeted approach to extracting plastics from water, providing a promising pathway to combat plastic pollution and mitigate its toxic effects on wildlife and the environment.
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Frequently asked questions
It is estimated that 1 million seabirds die from ingesting plastic every year.
Plastic kills birds through entanglement, or by being ingested. Plastic waste can get caught around birds' limbs and wings, or they may eat it, mistaking it for food.
Plastic reduces the volume of the bird's stomach, often leading to starvation. It can also release toxins into the bird's body, impacting kidney function and affecting cholesterol and enzyme levels. Sharp plastic particles can pierce internal organs, causing immediate death.
Seabirds are the most affected, as plastic in the ocean is often mistaken for prey. Albatross species, in particular, feed by skimming low over the water and inadvertently consume plastic as a result. However, plastic pollution also affects shorebirds and other migratory bird species.
Common sense and awareness can help to curb the giant tide of plastic. Recycling can also help, although many types of plastic cannot be recycled.
