https://www.youtube.com/watch?v=RaQBaVeEbW8&t=2s
What we’re gonna talk
about right now is something called a biodiversity hotspot. How do you figure out what the places are on Earth that deserve our
special focus, that deserve attention, that they need to protect them for
future generations?
It’s obvious that the Earth is in trouble, and we can’t
save the entire planet all at once. We need to have a focus. We can’t do triage
on an entire planet. We’ve limited resources. We have limited time. We’re
running out of time to protect many of these places. So what are the criteria
that we use to try and figure out what those hotspots really are, that need
that special attention for protection?
Back in 1988, ancient history to some of us and in fact
might be pre-history to others, there was a scientist by the name of Norman
Myers, who wrote a really important paper that analyzed different types of
geological, climatological and uniqueness criteria to come up with the concept
of a hotspot. Scientists who looked at this problem and decided eventually that
there really were two main criteria that we’re gonna lead to what Conservation
International now recognizes as a biodiversity hotspot. One criterion was that
there had to be at least 1500 endemic species of plants. We’ll get back to the
idea of endemism in a moment. There also had to be an additional factor that
made the area unique and deserving of our focus: there had to be more than 70%
of the original habitat already lost which highlighted the need to designate
this place as a hotspot.
Well, why plants? Plants, particularly in terrestrial
environments are crucial. Animals go where the plants are. Plants are the
primary producers. They’re at the base of food webs. Life attracts other life
and it depends on other life.
Now let’s get back to that idea of endemism. An endemic
species is a species that’s found in a certain area and nowhere else on earth.
In other words, endemism is a measure of how unique and irreplaceable something
is. An example of an endemic organism that resonates for people: people love tortoises.
If you think about the Galapagos Islands for example, most islands have their
own special type of tortoise. It lives there, and nowhere else. So, if
something happens to wipe out the tortoises on that island, those tortoises are
gone forever. They’re not found anyplace else. They were irreplaceable.
At the moment, Conservation International formally
recognizes 34 biodiversity hotspot areas on Earth. The interesting thing about
this is that less than three percent of the Earth’s land surface area is
represented by these hotspots. So, we’re talking about some very, very special
places indeed.
There are other ways to think about these special places
on Earth besides hotspots. Some of these concepts are used to help recognize
larger geographical units of land and of water that have unique assemblages of
species or distinct environmental conditions that make them worthy of our
special attention. I think it’s really important that we recognize that the
hotspot idea is much more than a conservation tool. It’s actually become a
powerful scientific tool, because hotspots are a blood pressure cuff for planet
Earth. You can go back and keep measuring the effects on these different places
due to human activity or environmental change of various kinds and go through
the Science of measuring the pressure on biodiversity.
In a sense, hotspots are almost like avatars. They’re
like representatives for other endangered areas on the planet that might not
necessarily meet this special criterion of 1500 endemic species of plants and
more than 70% of the original habitat lost and yet they are still obviously
critical and important places for lots of organisms to live.
You need to think about hotspots as a network of places
on Earth that are interconnected. Not just single units that protect small
pieces of biodiversity, but that help preserve biodiversity in a great many
other habitats and other hotspots as well. And lots of conservation
organizations, government agencies and even concerned people like all of us can
use these hotspots to better help direct the resources to the places that
require our greatest attention.
Above all, we need to remember one overriding principle:
that we focus on protecting the highest number of species that we can,
especially the ones that are most threatened. That’s what this hotspot concept
is trying to get to. We want to enhance our ability to protect species
richness. That way, we can boost the stability and resilience of ecosystems.
So I think that for me these hotspots really do carry
that special signal and are really worthy of the special effort that’s been
developed over the last few decades to monitor to them, to provide the good,
solid science that helps us not just to define them, but to monitor and promote
their health down the road and to employ those concepts to draw people in, to
develop that people power that’s really necessary to move forward with the
protection of life on Earth.
Para alguns estudiosos, esta tela apresenta acentuado teor
erótico. Ressaltam eles: a presença das cabeças de pássaro, comuns na obra de
Ernst para representar o homem – talvez sugerindo o desejo de libertação das
imposições sociais –, a noz representando a mulher, a ruptura dessa noz por uma
mão masculina, que podem configurar o ambiente que cerca um ato sexual, entre
outras representações.
1. a) Pessoal b) Estimular a ação e a velocidade./Corroer os
últimos resquícios de um mundo estável.
2. “[...] tudo parecia instável, a se mover [...]” (linhas
16-17)
3. Porque permitem o deslocamento rápido do observador e,
consequentemente, de seu ponto de vista.
4. No capitalismo é importante induzir o consumo para aumentar a
produção, visando ao lucro.
5. A prisão de movimentos do vestido pesado tradicional, provavelmente
acompanhado de espartilho, é substituído por roupas leves e que dão mais
liberdade de movimento.
6. a) O passado b) O
automóvel.
7. Fragmentos 5 e 7, especialmente.
8. Energia e movimento.
9. Principalmente pela instrução “Agite”, que enfatiza o papel
do acaso.
10. Os dois últimos versos.
1. a) A tela Corrente de cachorro em movimento; ela tenta captar
o movimento das personagens, em uma exaltação à velocidade.
b) A tela As senhoritas de Avignon; ela explora a técnica da
geometrização das personagens, possibilitando enxergar as mulheres por
diferentes ângulos.
c) A tela O grito, de Munch; ela é uma expressão da
subjetividade do artista, que procura captar uma imagem da dor humana.
d) O ready-made A fonte, de Duchamp; ele eleva um urinol à
situação de obra de arte.
e) A tela A persistência da memória, de Salvador Dalí; ela
explora um ambiente onírico, com referências ao sono, ao tempo e à memória.
2. De modo geral, nenhuma das correntes artísticas a que as
obras se filiam tinham interesse em representar objetos de forma verossímil. A
tela de Munch deforma o objeto, nas formas e nas cores; a de Balla, revela
empenho em captar o movimento, desprezando outros aspectos da verossimilhança;
a de Picasso, pela geometrização, dificulta a visualização do objeto; a de Dalí
explora elementos simbólicos, oníricos, deixando o observador confuso em
relação ao objeto retratado; o ready-made de Duchamp põe em xeque o conceito de
belo na arte ao apresentar um urinol, tradicionalmente desvinculado do campo
das representações artísticas.
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