Most ecosystems are... Terrestrial Tundra.
Tundra food webs are relatively simplistic compared to other biomes because biodiversity is low. They not only eat all 5 producers listed (including dyra, which are eaten by no other listed consumer), they are prey for four different species.
Keystone Species: Lemmings. A food web is a detailed interconnecting diagram that shows the overall food relationships between organisms in a particular environment. food web. The secondary consumer level contains the Gila woodpecker, collared lizard, grasshopper mouse and the mantis. It can be described as a "who eats whom" diagram that shows the complex feeding relationships for a particular ecosystem. Food chains are a conceptual description of energy flow in any ecosystem. At the top of the food web for the desert biome is the red tailed hawk, which is the top predator of the desert, along with the western diamondback rattlesnake and the elf owl. Biomes of the Tundra: Food Chains and Webs Food Chains and Webs. Indicator Species: Willows, Sedges and …

Food Webs and Food Chains of eight major biomes (desert, taiga, tundra, grasslands, wetlands, deciduous forest, rainforest, ocean) – sorting, matching and colouring sheets To remove them from the ecosystem would have a devastating effect on the environment.