Topic: Why Pollinator Decline Threatens Global Crop Productivity · Word count: 783 · Difficulty: beginner · 5 practice questions
A. The process of pollination, the transfer of pollen from one part of a flower to another to enable fertilization and produce seeds, is one of nature’s most crucial services. While some plants can pollinate themselves or are pollinated by the wind, a vast number of the world’s agricultural crops depend on animals, known as pollinators. These include bees, butterflies, birds, bats, and even tiny flies. For many years, scientists have warned about a worrying decline in the populations of these vital creatures. This decline is not just an ecological tragedy; it is a direct threat to global crop productivity and food security. The economic consequences of losing these pollinators are significant, affecting everyone from the small-scale farmer to the international consumer. B. The scale of our dependence on pollinators is immense. According to the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES), more than 75 percent of the world’s leading food crops rely to some extent on animal pollination for yield and quality. These crops are responsible for around 35 percent of global crop production by volume. This includes many of the fruits, vegetables, nuts, and seeds that form a healthy and varied human diet, such as apples, strawberries, tomatoes, and coffee. Without the diligent work of pollinators, the availability and diversity of the food we eat would be severely reduced, and the global economy would face enormous losses. C. A clear example of this economic dependence can be seen in the almond industry of California, USA. California produces over 80 percent of the world’s almonds, a crop valued in the billions of dollars annually. Almond trees are almost completely dependent on honeybees for pollination. The natural population of bees is nowhere near large enough to pollinate the vast orchards. Consequently, a massive industry of 'migratory beekeeping' has developed. Every year, beekeepers transport millions of honeybee hives on large trucks from all over the country to the almond groves for a few weeks. This service is costly for farmers, and these costs are rising as bee populations decline due to disease and habitat loss, making them more expensive to rent. D. The challenge is not limited to managed honeybees. In West Africa, the production of chocolate is entirely at the mercy of a tiny, wild insect—a midge no bigger than a pinhead. These midges are the only creatures that can pollinate the complex flowers of the cocoa tree. The livelihoods of millions of smallholder farmers in countries like Côte d'Ivoire and Ghana depend on these wild pollinators. Unlike the Californian almond farmers, these cocoa farmers cannot simply rent more pollinators. They are dependent on the health of the surrounding forest ecosystem that provides the specific breeding grounds these midges need to survive. Any disruption to this delicate natural balance directly reduces the cocoa yield, threatening local economies and the global chocolate supply. E. When the number of available pollinators is not enough for the number of crops that need pollinating, a situation known as a 'pollination deficit' occurs. This deficit does not necessarily mean a total crop failure. Instead, it often leads to lower productivity. For example, a fruit grower might find that their trees produce fewer fruits, or the fruits that do grow are smaller, misshapen, or less sweet. This reduction in both quantity and quality directly translates to a loss of income for the farmer. Studies have shown that crops experiencing a pollination deficit can suffer yield losses of 25 percent or more, a significant blow to any agricultural business. F. The economic ripple effect of a pollination deficit moves from the farm to the marketplace. When farmers harv…
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