Mensagem:

A mente que se abre a uma nova idéia jamais voltará ao seu tamanho original.

The mind that opens to a new idea never returns to its original size.

Albert Einstein

.><((((º>.><((((º>.><((((º>..><((((º>.><((((º>.><((((º>.
Quando vamos até o fundo do mar, descobrimos que ali jamais poderíamos viver sozinhos.
Então levamos mais alguém.E esta pessoa, chamada de dupla, companheiro ou simplesmente amigo, passa a ser importante para nós.Porque, além de poder salvar nossa vida, passa a compartilhar tudo que vimos e sentimos.E em duplas, passamos a ter equipes, e estas passam a ser cada vez maiores e mais unidas.

E assim entendemos que somos todos velhos amigos mesmo que não nos conheçamos.E esse elo que nos une é maior que todos os outros que já encontramos.E isso faz com que nós mais do que amigos, sejamos irmãos.Faz de nós, mergulhadores.

( Jacques Yves Cousteau)
.><((((º>.><((((º>.><((((º>.><((((º>.><((((º>.><((((º>.

Vídeos: MAR e Oceanos (movimente com (setas para baixo e PGDN)

Loading...

Cristina Zunino

(Andando no BLOG (setas para baixo e PGDN)

O BLOG do mergulhador é a total dedicação ao mergulhador, as notícias, os eventos, aos mergulhos e opniões dos mergulhadores.

Levando os oceanos, mares e a vida marinha até você.

Um trabalho feito ao que nós amamos.

Um BLOG , sem fins lucrativos com o objetivo de desenvolver, divulgar, promover e incentivar atividades no mergulho que possibilitem a conservação do meio ambiente e dos recursos naturais.

The BLOG is dedicated to the diver, news, events, to dives and opinions of the divers, taking the oceans, seas and marine life to you.
A work we love.
Diver's blog is a nonprofit blog with the goal of developing, disseminating, and encouraging activities in the diver world allowing the conservation of the environment and natural resources.
Cristina Zunino
PADI-Nr.0712035737 - AOWD

terça-feira, 24 de janeiro de 2012

A possible ecological disaster that nobody comments: ocean acidification

By Natasha Romanzoti
Chimneys, stoves and exhaust pipes of cars are some sources that release carbon dioxide into the air. Part of this has just dioxide dissolved in seawater, such as carbonic acid.
As the carbon dioxide in the atmosphere today reaches 380 parts per million (ppm), while the last few million years saw fluctuations between about 180 and 280 ppm, it is no surprise that the sea water is more acidic than during this recent period in Earth's history.
As always, it is not just the scale of change that is important, but its speed.
A new study attempted to measure the current rate of change, against what happened in pre-industrial times, but was dependent on computer models to provide historical estimates.
Despite this caveat, the survey numbers are surprising, suggesting that the current rate of acidification is two orders of magnitude larger than what happened at the end of the last Ice Age.
Do marine animals, plants and ecosystems can live with that? As the oceans will in the future? Is it still will be able to deliver the food we need?
Some laboratory experiments suggest problems. For example, last week, a team of Australian researchers found that increased levels of CO2 in seawater affect the brain chemistry of fish alter their behavior.
Some people may say that what is happening is not an increase in acidity, but a drop in alkalinity, so you can not call this acidification.
In a way, that is correct. With a pH of 8.1 and falling, sea water is alkaline to neutral path.
But this is irrelevant. Organisms and ecosystems adapt to any acidity or alkalinity are, but need time to do it, and in some cases, for example, for animals that need to form shells, such adaptation may be impossible.
Anyway, there is a wealth of evidence that ocean acidification is a concern - perhaps even more than the climatic effects of CO2 emissions.
Some climate conventions already mentioned the problems of acidification. The Rio +20 (United Nations Conference on Sustainable Development) offers a way of putting it on the tables of presidents and prime ministers, and a movement is being actively pursued.
The International Oceanographic Commission of UNESCO is a UN bodies dedicated to talking about the acidification in the Rio agenda
As with climate impacts, there is an agenda concerned with dealing with the impacts of acidification, as well as an agenda concerned with the reduction of the trend itself.
Some years ago, for example, scientists have shown that keeping the fish population in a balanced and healthy reef offers protection against impacts of temperature and acidity.

Nenhum comentário:

Postar um comentário

SOU Baby no MERGULHO começando agora ....

Perguntas e Respostas: Sou baby no mergulho

Fotografia SUB

Good TIMES

Preservando o MAR

Divirta-se

Laje de Santos ILV preservar!

Pacific Ocean Expedition - Daniel Botelho

Marcelo Krause e Kurt Amsler

72 metros -Carol Schrappe 2010

Adair Ribeiro Corveta V17

Naufrágio-Corveta ipiranga V17

Daniel Botelho

Daniel Botelho
Daniel Botelho

David Doubilet

David Doubilet
David Doubilet

FILMES :Mares e Oceanos

01- Mergulho Radical 2: o recife
02- Sharkwatwer
03- Imensidão Azul (1988)
04- A Esfera
05- O Fundo do Mar
06- O Mundo do silêncio (1956)
07- The Cave
08- O segredo do abismo
09- Expedições Fluviais
10- A Odisseia de Jacques Cousteau
11- A marcha dos pinguins
12- Homens de honra
13- Coleção Blue Planet
14- Coleção PLaneta Terra
15- A Ilha dos Golfinhos
16- Expedicao Brasil Oceanico
17- Tubarão
18- TITANIC da NATGEO
19- Um tesouro de amor (Fool’s Gold)
20- Lost City Raiders
21- Mergulho Fatal (2009)
22- Mar de fogo
23- Ocean Men
24- Sea Hunt (aventura submarina)
25-
The Greater Meaning of Water