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Posted By Hastamorir Artists Society

Tiger extinction

Recent increases in human disturbance pose significant threats to migratory species using collective movement strategies. Key threats to migrants may differ depending on behavioural traits (e.g. collective navigation), taxonomy and the environmental system (i.e. freshwater, marine or terrestrial) associated with migration. We quantitatively assess how collective navigation, taxonomic membership and environmental system impact species' vulnerability.

Likelihood of population decrease differed by taxonomic group: migratory birds were more likely to experience annual declines than non-migrants, while mammals displayed the opposite pattern. Within migratory species in IUCN, we observed that collective navigation and environmental system were important predictors of extinction risk for fishes and birds, but not for mammals, which had overall higher extinction risk than other taxa. We found high phylogenetic relatedness among collectively navigating species, which could have obscured its importance in determining extinction risk. Overall, outputs from these analyses can help guide strategic interventions to conserve the most vulnerable migrations.

As human development and activities continue to expand, scientists have grown increasingly concerned about such migrators, especially those that trek long distances. These animal travelers cover hundreds to thousands of kilometers annually, yet very little is known about how their movements are faring across the globe.

ARTICLE http://

Next time you read this article again these animals may already be extinct

Amur Leopard                      Panthera pardus orientalis
Black Rhino                                 Diceros bicornis
Bornean Orangutan                  Pongo pygmaeus                   
Cross River Gorilla                  Gorilla gorilla diehli
Eastern Lowland Gorilla          Gorilla beringei graueri
Hawksbill Turtle                        Eretmochelys imbricata
Javan Rhino                        Rhinoceros sondaicus
Malayan Tiger Panthera tigris jacksoni        
Mountain Gorilla Gorilla beringei beringei      
Orangutan Pongo abelii, Pongo pygmaeus



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