Sonoran Desert Food Web
Terrestrial
Deserts & Xeric Shrublands
Southwestern United States and Northwestern Mexico — Arizona and Sonora
Description
The Sonoran Desert is unique among North American deserts for its columnar cacti, including the iconic saguaro that can live over 200 years. Summer monsoon rains and winter Pacific storms create two distinct growing seasons. Gila woodpeckers excavate nest cavities in saguaros that are later used by elf owls, making saguaros keystone habitat structures.
Trophic Pyramid
Level 5
Decomposers
Desert bacteria
Dermestid beetles
Soil fungi
3 species
Level 4
Tertiary Consumers
Mountain lion
Great horned owl
Bobcat
3 species
Level 3
Secondary Consumers
Gila monster
Roadrunner
Harris's hawk
3 species
Level 2
Primary Consumers
Collared peccary
Desert tortoise
Cactus wren
3 species
Level 1
Producers
Saguaro cactus
Palo verde tree
Brittlebush
3 species
Apex Predators
Tertiary Consumers
Secondary Consumers
Primary Consumers
Producers
Key Interactions
- Saguaro cacti provide fruit, nectar, and nesting cavities for dozens of bird species
- Lesser long-nosed bats pollinate saguaro flowers during nocturnal visits
- Gila monsters store fat in their tails and can survive on a few large meals per year
- Monsoon rains trigger explosive breeding in Sonoran Desert toads