Final answer:
Pollinators worldwide are under threat due to various factors such as habitat loss, pesticides, and diseases, including Colony Collapse Disorder. These threats could have severe economic and nutritional consequences due to pollinators' role in the productivity of crops that provide essential nutrients.
Step-by-step explanation:
Pollinators are facing worldwide threats that jeopardize their populations and, consequently, the essential ecosystem services they provide through pollination. Factors contributing to the decline include habitat loss and fragmentation, pesticide use, invasive species, diseases, and climate change.
Among these, the phenomenon of Colony Collapse Disorder (CCD) has been notably impacting honeybee populations in North America, with effects such as severely reduced bee numbers threatening the pollination of crops, which could lead to increased costs and challenges in food production.
The global valuation of these pollination services is immense, estimated at Euro 153 billion, with about 75% of globally important crops relying on animal pollinators. The nutritional and economic consequences of declining pollinator populations could be severe, as these animals are responsible for the productivity of a wide range of crops that provide essential nutrients for a healthy human diet.
The international community has recognized the critical importance of pollinators through initiatives under the Convention on Biodiversity and the work of the International Union for the Conservation of Nature.