Daniel Pauly: The ocean's shifting baseline

18,522 views ・ 2015-07-17

TED


Please double-click on the English subtitles below to play the video.

Prevodilac: Silvija Varga Lektor: Tatjana Jevdjic
00:12
I'm going to speak
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Govoriću
00:14
about a tiny, little idea.
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o jednoj maloj ideji.
00:17
And this is about shifting baseline.
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A to je pomeranje dna mora.
00:21
And because the idea can be explained in one minute,
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Pošto ovo može da se objasni u roku od jedne minute,
00:25
I will tell you three stories before
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ispričaću vam 3 priče
00:28
to fill in the time.
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da bih ispunio vreme.
00:30
And the first story
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Prva priča
00:32
is about Charles Darwin, one of my heroes.
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je o Čarlsu Darvinu, jednom od mojih heroja.
00:35
And he was here, as you well know, in '35.
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On je boravio ovde, 1835.
00:38
And you'd think he was chasing finches,
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Pomislili biste da je došao da juri zebe,
00:40
but he wasn't.
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ali zapravo nije.
00:42
He was actually collecting fish.
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On je ovde sakupljao ribe.
00:44
And he described one of them
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Jednu od njih je opisao
00:46
as very "common."
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kao veoma učestalu vrstu.
00:48
This was the sailfin grouper.
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Ta riba je škarpina zrakoperka.
00:50
A big fishery was run on it
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Mnogi su lovili ovde zbog ove ribe
00:52
until the '80s.
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sve do osamdesetih.
00:55
Now the fish is on the IUCN Red List.
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Ova riba se nalazi na Crvenoj listi Međunarodne unije za očuvanje prirode.
00:58
Now this story,
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Ovu priču
01:00
we have heard it lots of times
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smo čuli toliko puta
01:03
on Galapagos and other places,
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na Galapagosu i na drugim mestima
01:05
so there is nothing particular about it.
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i ona nije ništa posebno.
01:08
But the point is, we still come to Galapagos.
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Ali u ovom trenutku, mi i dalje posećujemo Galapagos.
01:11
We still think it is pristine.
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Još uvek smatramo da je to drevno mesto.
01:14
The brochures still say
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I dan danas u brošurama piše
01:17
it is untouched.
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da je tu potpuno netaknuta priroda.
01:19
So what happens here?
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Dakle, šta se ovde dešava?
01:22
The second story, also to illustrate another concept,
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Druga priča, koja opisuje jedan drugi koncept,
01:25
is called shifting waistline.
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zove se pomeranje obima struka.
01:27
(Laughter)
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(Smeh)
01:30
Because I was there in '71,
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Pošto sam tamo bio 1971. godine
01:32
studying a lagoon in West Africa.
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proučavajući lagune u zapadnoj Africi.
01:34
I was there because I grew up in Europe
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Bio sam tamo jer sam odrastao u Evropi
01:37
and I wanted later to work in Africa.
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i želeo sam da kasnije radim u Africi.
01:39
And I thought I could blend in.
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Pomislio sam da bih mogao da se uklopim.
01:41
And I got a big sunburn,
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Prilično sam izgoreo na suncu
01:43
and I was convinced that I was really not from there.
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i bio sam sasvim uveren da ne pripadam tamo.
01:46
This was my first sunburn.
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Prvi put sam tada izgoreo na suncu.
01:48
And the lagoon
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Laguna
01:51
was surrounded by palm trees,
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je bila okružena palmama,
01:53
as you can see, and a few mangrove.
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kao što vidite ovde i sa nekoliko mangrova.
01:55
And it had tilapia
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Bilo je tu i tilapija
01:57
about 20 centimeters,
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dužine 20 centimetara,
01:59
a species of tilapia called blackchin tilapia.
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vrsta tilapije koja se zove crnobrada tilapija.
02:01
And the fisheries for this tilapia
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Lovišta za ovu vrstu tilapije
02:03
sustained lots of fish and they had a good time
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su držala veliki broj riba
02:06
and they earned more than average
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i zarađivala su više od proseka
02:08
in Ghana.
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u Gani.
02:10
When I went there 27 years later,
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Kada sam se vratio tamo posle 27 godina,
02:13
the fish had shrunk to half of their size.
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ribe su se znatno smanjile, gotovo prepolovile.
02:16
They were maturing at five centimeters.
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Sazrevale su sa svega 5 centimetara.
02:18
They had been pushed genetically.
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Genetski su bile modifikovane.
02:20
There were still fishes.
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Još je bilo ribe
02:22
They were still kind of happy.
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i svi su bili zadovoljni.
02:24
And the fish also were happy to be there.
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I ribe su bile zadovoljne što su tamo.
02:29
So nothing has changed,
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Dakle, ništa se nije promenilo,
02:31
but everything has changed.
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ali se sve promenilo.
02:33
My third little story
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Moja treća priča
02:35
is that I was an accomplice
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je to da sam bio saučesnik
02:37
in the introduction of trawling
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u uvođenju mrežnog ribarenja
02:39
in Southeast Asia.
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u jugoistočnoj Aziji.
02:41
In the '70s -- well, beginning in the '60s --
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Sedamdesetih, zapravo početkom šezdesetih,
02:44
Europe did lots of development projects.
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Evropa je učestvovala u mnogim razvojnim projektima.
02:47
Fish development
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Razvoj ribarstva
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meant imposing on countries
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je značio nametanje državama,
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that had already 100,000 fishers
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koje su već imale oko 100 hiljada ribara,
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to impose on them industrial fishing.
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da uvedu industrijski vid ribarenja.
02:57
And this boat, quite ugly,
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Ovaj brod, prilično ružan,
02:59
is called the Mutiara 4.
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se zove Mutijara 4.
03:01
And I went sailing on it,
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Plovio sam na njemu,
03:03
and we did surveys
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radio istraživanje, ankete
03:06
throughout the southern South China sea
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kroz oblasti Južnog kineskog mora,
03:09
and especially the Java Sea.
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posebno na Javanskom moru.
03:11
And what we caught,
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Ono što smo uhvatili,
03:13
we didn't have words for it.
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ostali smo bez reči.
03:15
What we caught, I know now,
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Ono što smo uhvatili je bilo, sada znam,
03:18
is the bottom of the sea.
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dno mora.
03:20
And 90 percent of our catch
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90% našeg ulova
03:22
were sponges,
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su bili sunđeri
03:24
other animals that are fixed on the bottom.
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i druge životinje koje se nalaze na dnu.
03:27
And actually most of the fish,
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A zapravo većina ribe
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they are a little spot on the debris,
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je bila retka pojava na smeću
03:31
the piles of debris, were coral reef fish.
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i to su bile ribe koralnog grebena.
03:34
Essentially the bottom of the sea came onto the deck
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Dno mora je bilo na našoj palubi
03:36
and then was thrown down.
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koju smo potom vraćali nazad.
03:38
And these pictures are extraordinary
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Ove slike su sjajne
03:41
because this transition is very rapid.
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jer ova promena je zaista brza.
03:44
Within a year, you do a survey
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Za samo godinu dana, radite istraživanje
03:47
and then commercial fishing begins.
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i potom počinje komercijalno ribarenje.
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The bottom is transformed
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Dno je potpuno promenjeno,
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from, in this case, a hard bottom or soft coral
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prešlo je od tvrdog ili mekog koralnog dna
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into a muddy mess.
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u muljeviti haos.
03:57
This is a dead turtle.
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Ovo je mrtva kornjača.
03:59
They were not eaten, they were thrown away because they were dead.
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Njih nismo jeli, nego smo ih bacali nazad jer su bile mrtve.
04:02
And one time we caught a live one.
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Jednom smo upecali i jednu živu.
04:04
It was not drowned yet.
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Ona se još nije udavila.
04:06
And then they wanted to kill it because it was good to eat.
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A onda su hteli da je ubiju jer su kornjače ukusne.
04:09
This mountain of debris
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Ovakve gomile smeća
04:12
is actually collected by fishers
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sakupe ribari
04:15
every time they go
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svaki put kada
04:17
into an area that's never been fished.
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se otisnu na more u kojem nikada nisu lovili.
04:19
But it's not documented.
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Ali ovo nikada nije dokumentovano.
04:21
We transform the world,
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Mi smo promenili svet,
04:23
but we don't remember it.
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ali ne uviđamo to.
04:25
We adjust our baseline
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Pomeramo našu baznu liniju
04:28
to the new level,
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na novi nivo
04:30
and we don't recall what was there.
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i ne sećamo šta je bilo tamo.
04:34
If you generalize this,
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Ako ovo uopštavate,
04:36
something like this happens.
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onda se nešto ovako dogodi.
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You have on the y axis some good thing:
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Na Y osi su dobre stvari:
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biodiversity, numbers of orca,
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biološka raznolikost, broj orki,
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the greenness of your country, the water supply.
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zelenilo, zalihe vode.
04:47
And over time it changes --
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Tokom vremena, to se menja --
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it changes
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to se menja
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because people do things, or naturally.
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jer ljudi rade neke stvari ili se menja prirodno.
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Every generation
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Svaka generacija
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will use the images
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će koristiti vizije
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that they got at the beginning of their conscious lives
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koje su dobili na početku svog svesnog života
05:00
as a standard
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i koristiće to kao standard
05:02
and will extrapolate forward.
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vrednujući ga kao početak.
05:04
And the difference then,
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Razlika koju vide
05:06
they perceive as a loss.
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se procenjuje kao gubitak.
05:08
But they don't perceive what happened before as a loss.
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Ali ne uviđaju da se pre toga dogodio gubitak.
05:11
You can have a succession of changes.
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Postoje etape promene.
05:13
At the end you want to sustain
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Na kraju, ono što želite da održite
05:16
miserable leftovers.
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su samo jadni ostaci.
05:19
And that, to a large extent, is what we want to do now.
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To je ono što mi činimo danas.
05:22
We want to sustain things that are gone
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Želimo da održimo stvari koje su nestale
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or things that are not the way they were.
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ili koje nisu više onakve kakve su bile.
05:29
Now one should think
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Neko će pomisliti
05:31
this problem affected people
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da je ovo uticalo na ljude
05:33
certainly when in predatory societies,
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u predatorskim društvima,
05:37
they killed animals
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kada su ubijali životinje,
05:39
and they didn't know they had done so
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ali nisu uviđali da to rade
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after a few generations.
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i nakon nekoliko generacija.
05:43
Because, obviously,
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Jer očigledno,
05:46
an animal that is very abundant,
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životinje kojih ima na pretek,
05:51
before it gets extinct,
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pre nego što izumru,
05:54
it becomes rare.
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postanu jako retke.
05:57
So you don't lose abundant animals.
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Dakle, ne gubimo životinje kojih ima u izobilju.
06:00
You always lose rare animals.
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Uvek gubimo retke životinje.
06:02
And therefore they're not perceived
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Zbog toga to ne smatramo
06:04
as a big loss.
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velikim gubitkom.
06:06
Over time,
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Tokom vremena
06:08
we concentrate on large animals,
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koncentrišemo se na velike životinje,
06:10
and in a sea that means the big fish.
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u moru su to velike ribe.
06:12
They become rarer because we fish them.
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One postanu retke jer ih mi pecamo.
06:15
Over time we have a few fish left
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Tokom vremena sve je manje riba
06:17
and we think this is the baseline.
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i pomislimo da je to bazna linija.
06:20
And the question is,
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Pitanje je
06:22
why do people accept this?
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zbog čega ljudi prihvataju ovo?
06:27
Well because they don't know that it was different.
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Zato što ne znaju da je ranije bilo drugačije.
06:30
And in fact, lots of people, scientists,
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Zapravo, mnogi ljudi od kojih su neki i naučnici,
06:33
will contest that it was really different.
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osporavaće da je stvarno bilo drugačije.
06:35
And they will contest this
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Oni će osporavati ovo
06:37
because the evidence
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smatrajući da dokazi
06:39
presented in an earlier mode
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koji su predstavljeni prema ranijem stanju,
06:44
is not in the way
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nisu predstavljeni
06:47
they would like the evidence presented.
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na način na koji oni misle da treba da budu predstavljeni.
06:49
For example,
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Na primer,
06:51
the anecdote that some present,
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anegdota koju neki pričaju jeste
06:53
as Captain so-and-so
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da je neki kapetan
06:55
observed lots of fish in this area
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posmatrao mnogo riba u ovoj oblasti
06:58
cannot be used
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koje se ne mogu koristiti
07:00
or is usually not utilized by fishery scientists,
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ili ih ne koriste naučnici za proučavanje riba,
07:03
because it's not "scientific."
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jer to nije "naučno".
07:05
So you have a situation
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Time dobijate situaciju
07:07
where people don't know the past,
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da ljudi nisu upoznati sa prošlošću,
07:10
even though we live in literate societies,
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iako živimo u pismenim zajednicama
07:13
because they don't trust
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jer ne veruju
07:15
the sources of the past.
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izvorima iz prošlosti.
07:18
And hence, the enormous role
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To je velika uloga
07:21
that a marine protected area can play.
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koju igra zaštićena pomorska oblast.
07:23
Because with marine protected areas,
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Jer u pomorski zaštićenim oblastima
07:26
we actually recreate the past.
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ponovo stvaramo prošlost.
07:30
We recreate the past that people cannot conceive
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Stvaramo prošlost koju ljudi ne mogu ni da zamisle
07:33
because the baseline has shifted
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jer se osnova pomerila
07:35
and is extremely low.
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i nalazi se veoma nisko.
07:37
That is for people
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To je za ljude
07:39
who can see a marine protected area
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koji mogu da posmatraju te zaštićene oblasti
07:44
and who can benefit
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i koji mogu da imaju koristi
07:46
from the insight that it provides,
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od uvida u situaciju
07:49
which enables them to reset their baseline.
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i to im omogućava da reše ovaj problem.
07:53
How about the people who can't do that
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Šta je sa ljudima koji ne mogu to da urade
07:55
because they have no access --
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jer nemaju pristup --
07:57
the people in the Midwest for example?
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ljudi sa Srednjeg zapada, na primer?
08:00
There I think
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Moguće je
08:02
that the arts and film
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da umetnost i filmovi
08:04
can perhaps fill the gap,
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ispune ovu prazninu
08:06
and simulation.
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i simulaciju.
08:08
This is a simulation of Chesapeake Bay.
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Ovo je simulacija Česepik zaliva.
08:11
There were gray whales in Chesapeake Bay a long time ago --
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U Česepik zalivu je pre mnogo godina bilo sivih kitova,
08:13
500 years ago.
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pre 500 godina.
08:15
And you will have noticed that the hues and tones
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Primetićete da su boje slične onima
08:18
are like "Avatar."
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kao u filmu "Avatar".
08:20
(Laughter)
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(Smeh)
08:22
And if you think about "Avatar,"
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Ako pomislite na taj film,
08:24
if you think of why people were so touched by it --
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ako se zapitate zašto su ljudi bili toliko oduševljeni,
08:27
never mind the Pocahontas story --
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bez obzira na priču o Pokahontas,
08:31
why so touched by the imagery?
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zašto su te slike uticale na nas?
08:35
Because it evokes something
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Zato što to izaziva nešto u nama,
08:38
that in a sense has been lost.
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kao osećaj da smo nešto izgubili.
08:40
And so my recommendation,
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Od svih saveta koji mogu da vam dam,
08:42
it's the only one I will provide,
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jedan jedini ću podeliti sa vama,
08:44
is for Cameron to do "Avatar II" underwater.
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a to je da Kameron snimi "Avatar 2" ispod vode.
08:49
Thank you very much.
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Hvala najlepše.
08:51
(Applause)
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(Aplauz)
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