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Impact of the Brown Tree Snake on Guam's Ecosystem and Local Communities

The Brown Tree Snake (Boiga irregularis), native to Australia, was accidentally introduced to Guam in the 1950s via ship cargo. This invasive species preys on frogs, lizards, small birds, and bird eggs, significantly disrupting the local food web. It has no natural predators in Guam, leading to a dramatic decline in native bird populations that are crucial for seed dispersal, thereby affecting tree growth and biodiversity. The snake also causes frequent power outages, impacting local communities. Its presence highlights the challenges of managing invasive species.

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Impact of the Brown Tree Snake on Guam's Ecosystem and Local Communities

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  1. The Brown Tree Snake Boigairregularius

  2. Kingdom, Phylum, Class • The Brown Tree Snake is in the animaila kingdom • Phylum: Cordata • Class: Reptillia

  3. Distribution • Originally from Australia Transported in to Guam by accident on a ship cargo in the 1950’s

  4. Food Web • These snakes eat frogs, lizards, small birds, and also bird eggs. • We were not able to find a predator of this animal .

  5. Effects on people • Caused power outages every week • Ate some of the native species such as birds that were used for food by the people

  6. Success • It has a plentiful amount of food • Also very little if any predators

  7. Effect on ecosystem • Birds distribute seeds for trees. But the snake is eating the birds so there are less trees. • Less native trees

  8. The brown Tree Snake By, Kevin Callinan and Joe Ruddy

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