{"id":7339,"date":"2026-11-07T23:24:57","date_gmt":"2026-11-08T04:24:57","guid":{"rendered":"https:\/\/canasanta.ca\/?p=7339"},"modified":"2026-11-07T23:24:57","modified_gmt":"2026-11-08T04:24:57","slug":"ruido-humano-altera-animales-estudio-science","status":"publish","type":"post","link":"https:\/\/canasanta.ca\/en\/ciencia\/ruido-humano-altera-animales-estudio-science\/","title":{"rendered":"EL RUIDO HUMANO ALTERA A OCHO DE CADA DIEZ ESPECIES"},"content":{"rendered":"

El ruido de carreteras, barcos, f\u00e1bricas y ciudades no solo interrumpe el canto de las aves. Una investigaci\u00f3n publicada en la revista Science<\/em> el 6 de noviembre de 2026 concluye que la contaminaci\u00f3n ac\u00fastica de origen humano modifica al menos una caracter\u00edstica fisiol\u00f3gica, del desarrollo o del comportamiento en aproximadamente ocho de cada diez especies<\/strong> incluidas en un amplio an\u00e1lisis experimental. Sus consecuencias pueden propagarse a las relaciones entre depredadores y presas y alterar comunidades enteras.<\/p>\n

El trabajo fue realizado por Hansjoerg P. Kunc<\/strong> y Rouven Schmidt<\/strong>, investigadores de la Queen\u2019s University Belfast<\/strong>. Reunieron informaci\u00f3n de 214 estudios experimentales<\/strong> sobre 177 especies<\/strong> y compararon animales expuestos a ruido producido por actividades humanas con grupos de control. El objetivo no era demostrar que todos los animales responden de la misma manera, sino averiguar qu\u00e9 patrones aparecen cuando se examinan conjuntamente especies y ambientes muy diferentes.<\/p>\n

EL RUIDO CAMBIA M\u00c1S QUE LA COMUNICACI\u00d3N<\/h2>\n

La atenci\u00f3n p\u00fablica suele concentrarse en las aves que deben cantar m\u00e1s alto cerca de una carretera o en los cet\u00e1ceos que dependen del sonido para orientarse. Sin embargo, los investigadores estudiaron un espectro mucho m\u00e1s amplio de respuestas: funcionamiento corporal, desarrollo, conducta, supervivencia, reproducci\u00f3n, abundancia y relaciones ecol\u00f3gicas. La perturbaci\u00f3n ac\u00fastica puede actuar incluso cuando un animal no parece huir ni deja de alimentarse.<\/p>\n

Entre los efectos identificados figuran respuestas de estr\u00e9s celular, cambios hormonales y alteraciones del desarrollo. Son mecanismos que pueden tener consecuencias posteriores sobre la capacidad de conseguir alimento, reproducirse o evitar peligros. El an\u00e1lisis tuvo en cuenta el parentesco evolutivo entre las especies para reducir el riesgo de confundir semejanzas heredadas con efectos atribuibles al ruido.<\/p>\n

El dato del 80 % requiere una lectura precisa: se refiere a las especies examinadas en los experimentos recopilados, no a un censo de todas las especies del planeta. Tampoco significa que cada individuo expuesto vaya a sufrir el mismo da\u00f1o. La intensidad, la duraci\u00f3n, la frecuencia del sonido y el contexto ecol\u00f3gico pueden modificar la respuesta.<\/p>\n

DEPREDADORES QUE CAZAN PEOR<\/h2>\n

Una de las conclusiones m\u00e1s reveladoras es que el ruido puede transformar la relaci\u00f3n entre quienes cazan y quienes intentan sobrevivir. Seg\u00fan la s\u00edntesis divulgada junto al estudio, los depredadores sometidos a ruido necesitaron aproximadamente 2,5 veces m\u00e1s esfuerzo de caza<\/strong> y capturaron cerca de un 25 % menos de presas<\/strong> en los conjuntos experimentales analizados. Las presas, a su vez, aumentaron su vigilancia.<\/p>\n

No obstante, el ruido no perjudica a todos los animales de forma id\u00e9ntica. Un refugio puede amplificar determinados sonidos y empujar a una presa a abandonar la protecci\u00f3n; otro depredador podr\u00eda aprovechar esa exposici\u00f3n. As\u00ed surgen ganadores y perdedores locales, aunque el balance general de la evidencia estudiada apunta a consecuencias desfavorables para la fauna.<\/p>\n

\"Peque\u00f1a
Ave silvestre en su h\u00e1bitat. Fotograf\u00eda de contexto: heino eisner \/ Unsplash. No corresponde a un ejemplar de los experimentos.<\/figcaption><\/figure>\n

El problema alcanza tambi\u00e9n a la abundancia de animales. En la comparaci\u00f3n resumida por los autores, donde hab\u00eda cien animales en condiciones silenciosas se observaron alrededor de 63 en ambientes ruidosos. Es una estimaci\u00f3n agregada de los estudios analizados, no una regla aplicable de forma autom\u00e1tica a cada bosque, ciudad o costa.<\/p>\n

UN EFECTO QUE SE EXTIENDE POR LOS ECOSISTEMAS<\/h2>\n

Cuando cambia la eficacia de un depredador, pueden cambiar las poblaciones de sus presas. Si estas dedican m\u00e1s tiempo a vigilar, quiz\u00e1 dispongan de menos oportunidades para alimentarse. Y si las especies responden de manera desigual, las interacciones entre ellas pueden reorganizarse. El sonido deja de ser entonces una simple molestia y pasa a ser una presi\u00f3n ecol\u00f3gica capaz de influir en redes alimentarias.<\/p>\n

La contaminaci\u00f3n ac\u00fastica es particularmente dif\u00edcil de delimitar porque atraviesa fronteras de h\u00e1bitat. Un veh\u00edculo puede escucharse mucho m\u00e1s all\u00e1 del asfalto; el tr\u00e1fico mar\u00edtimo se propaga por el agua; una instalaci\u00f3n industrial puede generar un fondo sonoro persistente. A diferencia de una barrera f\u00edsica, ese impacto puede afectar zonas que, a primera vista, parecen intactas.<\/p>\n

EL VALOR DE RECUPERAR EL SILENCIO<\/h2>\n

Los investigadores proponen una respuesta pr\u00e1ctica: gestionar de forma espec\u00edfica el paisaje sonoro y establecer zonas de bajo ruido<\/strong> que funcionen como refugios ac\u00fasticos. Las medidas posibles depender\u00e1n de cada lugar y de las especies que lo habiten; el estudio no establece una soluci\u00f3n universal ni demuestra que reducir el ruido baste por s\u00ed solo para restaurar un ecosistema degradado.<\/p>\n

La investigaci\u00f3n ampl\u00eda el significado de conservar un espacio natural. Proteger \u00e1rboles, humedales o corredores de fauna puede resultar insuficiente si el entorno permanece sometido a un estruendo constante. La calidad ac\u00fastica emerge como una dimensi\u00f3n medible de la protecci\u00f3n ambiental, con implicaciones para carreteras, navegaci\u00f3n, urbanismo y \u00e1reas protegidas.<\/p>\n

El trabajo, titulado Echoes of the Anthropocene: Noise pollution as a global threat<\/em>, aporta una advertencia basada en evidencia experimental: el ruido humano no afecta \u00fanicamente a la capacidad de escuchar. Tambi\u00e9n puede modificar la manera en que los animales crecen, se comportan y se relacionan. Su publicaci\u00f3n original corresponde al 6 de noviembre de 2026; este reportaje no se presenta como una alerta de \u00faltima hora.<\/p>","protected":false},"excerpt":{"rendered":"

Un an\u00e1lisis de 214 estudios sobre 177 especies revela c\u00f3mo el ruido humano modifica la biolog\u00eda y las relaciones entre animales.<\/p>","protected":false},"author":284226809,"featured_media":7337,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[33205457,33205542,3213,33205704],"tags":[33206540,33208731,33208732],"class_list":["post-7339","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-al-dia","category-animales","category-ciencia","category-medio-ambiente","tag-biodiversidad","tag-contaminacion-acustica","tag-fauna-silvestre"],"acf":{"introduccion":"","fuentes_y_referencias":"Kunc, H. 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