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user45
16 vistas · 6 años hace

Salmon make a perilous voyage upstream past hungry eagles and bears to mate in forest creeks. When the salmon die, a new journey begins – with maggots.

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For salmon lovers in California, October is “the peak of the return” when hundreds of thousands of Chinook salmon leave the open ocean and swim back to their ancestral streams to spawn and die. All along the Pacific coast, starting in the early summer and stretching as late as December, salmon wait offshore for the right timing to complete their journey inland.

In Alaska, the season starts in late June, when salmon head to streams in lush coastal forests. Although this annual migration is welcomed by fishermen who catch the salmon offshore, scientists are finding a much broader and holistic function of the spawning salmon: feeding the forest.

Millions of salmon make this migratory journey -- called running -- every year, and their silvery bodies all but obscure the rivers they pass through. This throng of salmon flesh coming into Alaska’s forests is a mass movement of nutrients from the salt waters of the ocean to the forest floor. Decomposing salmon on the sides of streams not only fertilize the soil beneath them, they also provide the base of a complex food web that depends upon them.


--- Why Do Salmon Swim Upstream?
Salmon run up freshwater streams and rivers to mate. A female salmon will dig a depression in the gravel with her tails and then deposit her eggs in the hole. Male salmon swim alongside the female and release a cloud of sperm at the same. The eggs are fertilized in the running water as the female buries them under a layer of gravel.

When the eggs hatch, they spend the first part of their lives hunting and growing in their home stream before heading out to sea to spend their adulthood.

--- Why Do Salmon Die After Mating?
Salmon typically mate once and then die, though some may return to the sea and come back to mate the subsequent year. Salmon put all of their energy into mating instead of maintaining the salmon’s body for the future. This is a type of mating strategy where adults die after a single mating episode is called semelparity.

---+ Read the entire article on KQED Science:
https://ww2.kqed.org/science/2....017/09/26/theres-som

---+ For more information:
Bob Armstrong’s Nature Alaska
http://www.naturebob.com/

---+ More Great Deep Look episodes:

These Fish Are All About Sex on the Beach | Deep Look
https://www.youtube.com/watch?v=j5F3z1iP0Ic&list=PLdKlciEDdCQDxBs0SZgTMqhszst1jqZhp&index=3

Decorator Crabs Make High Fashion at Low Tide | Deep Look
https://www.youtube.com/watch?v=OwQcv7TyX04

Daddy Longlegs Risk Life ... and Especially Limb ... to Survive | Deep Look
https://www.youtube.com/watch?v=tjDmH8zhp6o

---+ See some great videos and documentaries from the PBS Digital Studios!

Beavers: The Smartest Thing in Fur Pants | It’s Okay To Be Smart
https://www.youtube.com/watch?v=Zm6X77ShHa8

How Do Glaciers Move? | It’s Okay To Be Smart
https://www.youtube.com/watch?v=RnlPrdMoQ1Y&t=165s

The Smell of Durian Explained | Reactions (ft. BrainCraft, Joe Hanson, Physics Girl & PBS Space Time)
https://www.youtube.com/watch?v=a0v0n6tKPLc

How Do Glaciers Move? | It’s Okay To Be Smart
https://www.youtube.com/watch?v=RnlPrdMoQ1Y

Your Biological Clock at Work | BrainCraft
https://www.youtube.com/watch?v=8Q8djfQlYwQ

---+ Follow KQED Science:
KQED Science: http://www.kqed.org/science
Tumblr: http://kqedscience.tumblr.com
Twitter: https://www.twitter.com/kqedscience

---+ About KQED

KQED, an NPR and PBS affiliate based in San Francisco, serves the people of Northern California and beyond with a public-supported alternative to commercial media. Home to one of the most listened-to public radio station in the nation, one of the highest-rated public television services and an award-winning education program, KQED is also a leader and innovator in interactive media and technology, taking people of all ages on journeys of exploration — exposing them to new people, places and ideas.

Funding for Deep Look is provided in part by PBS Digital Studios and the John S. and James L. Knight Foundation. Deep Look is a project of KQED Science, which is also supported by HopeLab, the David B. Gold Foundation, the S. D. Bechtel, Jr. Foundation, the Dirk and Charlene Kabcenell Foundation, the Vadasz Family Foundation, the Gordon and Betty Moore Foundation, the Smart Family Foundation and the members of KQED.
#deeplook

admin
34 vistas · 6 años hace

As coronavirus spreads to the US, John Oliver discusses what’s being done to fight the illness, what’s gone wrong, and how to stay safe.

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user15
6 vistas · 6 años hace

Bebé Juan tiene el dino día en la escuela y va a aprender con todos sus amigos sobre los diferentes dinosaurios porque él adora los dinosaurios. Todos los bebés va a aprender cuál es el Estegosaurio, el Triceratops y el Tiranosaurio Rex, va a ser muy divertido y después jugarán todos juntos a encontrar los diferentes dinosaurios en el salón de clases. ¿Cual es tu dinosaurio favorito?

¡Aprende y disfruta con todos nuestros divertidos videos para niños en 3D! #bebejuan #cancionesinfantiles #littleangelespañol

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Letra: El Dino día
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Hoy es el dino día que alegría
Seremos dinosaurios por un día
Nos disfrazaremos
Con amigos jugaremos
Que alegría hoy es el dino día

Hoy es el dino día que alegría
Seremos dinosaurios por un día
Nos disfrazaremos
Con amigos jugaremos
Que alegría hoy es el dino día

El estegosaurio es un dinosaurio
Con espinas en la cola y ruge alto
Él baja su cabeza y mastica en la tierra
Un estegosaurio es un dinosaurio

El Triceratops es un dinosaurio
Con tres grandes cuernos color blanco
Solo come plantas cuando le ruge la panza
El Triceratops es un dinosaurio

El Tiranosaurio es un gran dinosaurio
Ves sus dientes cuando ruge alto
Tiene una gran boca pero sus manos son cortas
El Tiranosaurio es un gran dinosaurio

De dinosaurios nos disfrazaremos
Al caminar temblará el suelo
Que gran alegría, hoy es el Dino día
Y como dinosaurios rugiremos

Somos dinosaurios muy felices
Somos dinosaurios muy felices
Somos grandes y fuertes
Dinosaurios verdes
¡Somos dinosaurios muy felices!
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Nuestras canciones para niños enseñan habilidades básicas y mejoran su habilidad para comprender y seguir instrucciones. Las canciones infantiles aceleran las capacidades fonéticas y mejoran la comprensión oral, de lectura y escritura.

No olvides darnos un LIKE (?) si disfrutaste este video.

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Música infantil, canciones para niños, Spanish for kids, nursery rhymes Spanish, Spanish kids songs.

Sai Yoshua Rodriguez Jimenez
45 vistas · 6 años hace

Pirin y Padre Cristian Saludan a mama Felicia VID 20200507 105656

user46
62 vistas · 6 años hace

Audio & Video Mix by DJ Crayfish, Czech Republic. Mix with 2 parts, "Cool Down" with Pop & Dance and "Throw Down" in Lower tempo. For Whitney in Memoriam and All Fans Around The World. For me.. absolutely Queen Of Pop from all woman´s voices! Enjoy this memories and story of big voice of Pop! Whitney! Rest in piece.. We Will Always Love You..

https://www.whitneyhouston.com/
https://www.facebook.com/WhitneyHouston/

Wine_XD
12 vistas · 6 años hace

-MI PATREON: https://patreon.com/WineXD
-TWITTER: https://twitter.com/wineMFN

-Canción: https://www.youtube.com/watch?v=La4Dcd1aUcE

Después de pedirlo tanto, hoy traigo un preguntas y respuestas donde contaremos algunas de las curiosidades que más os inquietan.
Sabréis más cosas sobre los gatos (ZarpasSucias, PeloOveja) y sobre mi.
Espero que os guste el vídeo y un buen LIKE!!!

Wine_XD
9 vistas · 6 años hace

-Si quieres aportar tu granito de arena......es gracioso porque soy un gato y cago en una caja con arena :3 http://goo.gl/Bei11A

-Sígueme en twitter: https://twitter.com/wineMFN
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Espero que os guste mi nuevo mundo, seguro que si :) A Porky le encanta XD

Wine_XD
10 vistas · 6 años hace

Se trata de hacer un pistón en el menor tiempo posible :D, mi marca está en 7 minutos, alguien que me supere.......XD
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Sígueme en twitter: https://twitter.com/wineMFN
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Link música: http://www.youtube.com/watch?v=L8cdSo4hQE4




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