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Pollinator decline is the reduction in abundance of insect and other animal pollinators in many ecosystems worldwide that began being recorded at the end of the 20th century. Multiple lines of evidence exist for the reduction of wild pollinator populations at the regional level, especially within Europe and North America.
In China, hand pollination of apple orchards is labor-intensive, time-consuming, and costly. [204] [205] In regions of the Old World where they are indigenous, honeybees (Apis mellifera) are among the most important pollinators, vital to sustain natural habitats there in addition to their value for human societies (to sustain food resources). [206]
Reports typically describe policies to prevent the loss of diversity generally, such as habitat preservation, rather than specifying measures to protect particular taxa. Pollinators are the main exception to this, with several countries reporting efforts to reduce the decline of their pollinating insects.
Genetic pollution is a term for uncontrolled [1] [2] gene flow into wild populations. It is defined as "the dispersal of contaminated altered genes from genetically engineered organisms to natural organisms, esp. by cross-pollination", [3] but has come to be used in some broader ways.
These fruits and vegetables are important commercial products, but are also a source of food for wild animals. So pollinators "hold entire ecosystems together," Watson said.
Water pollution: This is the contamination of water by human activities. Water pollution can lead to the death of fish and other aquatic organisms, and the spread of disease. Loss of biodiversity: This is the decline in the number and variety of plant and animal species. Loss of biodiversity can have a number of negative impacts, including the ...
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Pollination by insects plays a huge role in the production of food crop and flowering plants. Without pollinators searching for nectar and pollen for food the plants would not produce a seed that will create another plant. NRCS sees the importance of this process so they are taking measures to increase the declining number of pollinators. [42]