«El animal más feliz del mundo» se enfrenta a la extinción.
«El animal más feliz del mundo» se enfrenta a la extinción: una historia de cambio climático y quokkas.
Con una frecuencia cada vez mayor, un marsupial macrópodo regordete está en los titulares por el riesgo de ser extinto. Ha sido proclamado como el «animal más feliz del mundo».
El quokka enamora con su estructura de oso de peluche, pero sobre todo por su sonrisa descarada y su naturaleza característicamente social.
Sin embargo, la conciencia pública sobre los riesgos modernos para las poblaciones de quokka o el animal más feliz sigue siendo baja.
En la Lista Roja.
Los quokkas o el animal más feliz, son una de las muchas especies que figuran como vulnerables en la Lista Roja de la UICN.
Debido a su extremo endemismo en la esquina suroeste de Australia y sus dos islas colindantes: Rottnest y Bald, los quokkas son particularmente sensibles a la fragmentación, destrucción y alteración climática del hábitat.
Desafortunadamente, como resultado de las actividades humanas, las poblaciones de quokka o del animal más feliz ahora enfrentan estas tres amenazas.
De hecho, en un estudio realizado, se estima que la extinción ocurrirá ya en 2070 si no se toman medidas para mitigar drásticamente el declive de la especie.
Para combatir las amenazas que afectan a las especies nativas, es fundamental que los científicos comprendan las causas exactas de la disminución de la población proyectada.
El ecosistema del «Animal más Feliz del mundo».
Para los quokkas, estas causas están directamente relacionadas con sus hábitats preferidos.
En Australia, un continente marcado por los desiertos y la aridez, los quokkas prosperan como especialistas en vegetación.
Forrajeros nocturnos, buscan hábitats densos y cargados de arbustos cerca de los pantanos para albergar permanentemente sus sociedades de 25-150 individuos.
Históricamente, estos hábitats se encontraban en regiones con 700 mm de precipitación anual.
Sin embargo, las poblaciones de quokka recientes se han desplazado para residir en áreas que reciben más de 1000 mm de lluvia por año como mecanismo de defensa.
Son pequeños y están mal equipados para defenderse de los depredadores con sus mejillas regordetas y sus diminutas patas.
Los quokkas, o el animal más feliz, dependen de la vegetación de secano para su protección y nutrición.
Tienden a buscar abundante lluvia en un lugar árido, pero es una que habitan los depredadores de los quokkas: dingos, zorros, gatos o pájaros grandes.
La alteración del medio ambiente.
Sin embargo, a medida que los humanos alteran el medio ambiente de formas sin precedentes, es posible que la estrategia del quokka ya no se aplique.
El quokka es solo una de las especies que se enfrentan actualmente a la extinción en Australia.
A medida que las poblaciones humanas continúan creciendo a tasas astronómicas, se convierte en un deber, brindar protección a las pequeñas especies.
Estudiar los efectos del cambio climático sobre las especies endémicas y gestionar sus programas de recuperación antes de su necesaria institución es y debe ser nuestra realidad actual.
De lo contrario, corremos el riesgo de perder las especies que hacen que valga la pena luchar por este planeta.
Y también, corremos el riesgo de perder esa sonrisa contagiosa del «animal más feliz del mundo».
Con información de National Geographic.
Somos Extremo Mundial.
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