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Klimaskeptiker Info
2010-09-30 de
Von der wundersamen Auferstehung ausgestorbener Arten
Das Artenstreben macht mal wieder die Runde.
Erstaunlicherweise aber einmal anders rum:
Vermeintlich ausgestorbene Tiere leben noch.
Immer wieder tauchen “ausgestorbene Arten” auf, was nicht im geringsten verwunderlich ist.
Weltweit sind wahrscheinlich viel weniger Säugetiere ausgestorben als befürchtet. Mehr als ein Drittel der seit seit dem Jahr 1500 ausgestorben geglaubten Arten seien wiederentdeckt worden, berichten zwei Forscher der australischen Universität von Queensland in der Fachzeitschrift „Proceedings of the Royal Society B“. Insgesamt seien 67 der 187 zunächst als ausgestorbenen erklärten oder lange nicht gesichteten Tiere wieder aufgetaucht.
Abgesehen davon, dass 99,9% aller jemals auf diesem Planeten existierende Arten bereits lange vor der frevelhaften Umweltzerstörung durch den modernen Menschen ausgestorben sind, entspringen sämtliche “Berichte” rund um ausgestorbene Arten der “Fantasie” ihrer Ersteller.
Niemand kann einen Beweis für das Aussterben des in meinem Garten heimischen unsichtbaren rosaroten Einhorns erbringen – und genau so verhält es sich mit allen anderen Arten auf unserem Globus.
20 Minutes
2010-10-12 fr
L'Amazonie, une richesse naturelle à préserver
Une nouvelle espèce y est découverte tous les trois jours...
La forêt amazonienne, un symbole de la lutte contre la déforestation.
Ce mardi, le WWF présente à Nagoya, dans le cadre de la conférence internationale sur la biodiversité, un rapport selon lequel une nouvelle espèce est découverte en moyenne tous les trois jours en Amazonie.
Entre 1999 et 2009, plus de 1.200 nouvelles espèces ont été identifiées dans cette région du monde, selon le rapport «L'Amazonie vivante»: 637 plantes, 257 poissons, 216 amphibiens, 55 reptiles, 16 oiseaux et 39 mammifères.
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de Aus der Panik-Küche en From the panic laboratory fr De la marmite des alarmistes
20 Minutes
2010-10-27 fr
Peut-on parler de biodiversité sans parler de climat?
A Nagoya (Japon), on parle de biodiversité en essayant de faire mieux qu'à Copenhague sur le climat.
A Calvi (Corse), où le Festival du vent s'ouvre mercredi 27 octobre
pour cinq jours,
on relie naturellement les deux sujets.
Alors que les scientifiques estiment que la perte de biodiversité serait exacerbée de 20 à 30% par le réchauffement climatique, l'échec des négociations sur le climat en décembre dernier pourrait bien compromettre les engagements qui seront potentiellement pris au Japon d'ici à la fin de la semaine pour freiner l'érosion de la biodiversité.
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The graphs show how the rate of photosynthesis varies with irradiance, the three experiments differing only in the concentration of CO2. |
The lowest graph is that for a CO2 concentration of 0.03%, much as it is at this time [actually ~385 ppmv or 0.0385%]. In the early part of the graph the rate of the reaction is related almost directly to the amount of irradiance, but the rate falls off at higher irradiances and eventually levels off. This tells us that at higher irradiances it is the concentration of CO2 that limits the reaction rate, there is sufficient light falling on the leaves, but the requirement for more CO2 is the limiting factor. We strongly object to CO2 being regarded as a pollutant; it is the giver of life and we all depend upon its chemical and radiative properties.
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Mehr CO2 macht die Erde grüner!
EIKE Europäisches Institut für Klima und Energie
2009-09-24 de
Mehr CO2 macht die Erde grüner!
Noch nie in den letzten Jahrzehnten oder Jahrhunderten war die Erde grüner als heute - dank des gestiegenen CO2-Gehaltes der Atmosphäre.
Wie Lawrence Solomon berichtet, ist in den letzten 20 Jahren die globale biologische Produktion um mehr als 6% gestiegen.
Rund 25 % der Landmasse zeigten einen erheblichen Zuwachs, während nur 7 % einen Rückgang verzeichneten.
Die globale Erwärmung, so sie wirklich stattfinden würde, wäre ein Segen für uns
EIKE Europäisches Institut für Klima und Energie
2011-08-25 de
Die globale Erwärmung, so sie wirklich stattfinden würde,
wäre ein Segen für uns
Regierungsagenturen und internationale Institutionen, die hartnäckig daran gearbeitet haben, das CO2 als einen gefährlichen Verschmutzer zu brandmarken, haben der Öffentlichkeit einen gewaltigen Bärendienst erwiesen.
Dies sagte Dr. Craig Idso, ein Wissenschaftler und Autor vor Mitgliedern der American Legislative Exchange Council (ALEC) auf deren Jahrestreffen vor einigen Wochen.
Im Gegensatz zu den weithin kolportierten Meldungen ist CO2 eine Schlüsselkomponente für das Leben auf der Erde, die positive Auswirkungen auf Umwelt und Menschheit im Besonderen hat, führte Idso in seinem Vortrag in New Orleans aus.
de Mehr CO2 bedeutet Ertragsteigerung in der Landwirtschaft
EIKE Europäisches Institut für Klima und Energie
2009-09-24 de
Mehr CO2 bedeutet Ertragsteigerung in der Landwirtschaft
Der seit Ende des 19. Jahrhunderts gestiegene CO2-Gehalt der Luft wird als wesentliche Ursache der globalen Erwärmung angesehen.
Weiter Zunahmen sollen zu ökologischen Schäden führen, die sich negativ auf die Menschheit auswirken.
CO2 wird damit zum gefährlichsten Umweltgift abgestempelt.
Völlig ignoriert wird, dass CO2 ein Grundstoff für jegliches Leben auf unserem Planeten darstellt.
This animation shows an average of 10 years worth of SeaWiFS data. Dark blue represents warmer areas where there tends to be a lack of nutrients, and greens and reds represent cooler nutrient-rich areas which support life.
The nutrient-rich areas include coastal regions where cold water rises from the sea floor bringing nutrients along and areas at the mouths of rivers where the rivers have brought nutrients into the ocean from the land.
Watts UP With That? (Antony Watts)
2008-06-08 en
Surprise: Earths' Biosphere is Booming, Satellite Data Suggests
CO2 the Cause
The planet is the greenest it's been in decades, perhaps in centuries.
Until the 1980s, ecologists had no way to systematically track growth in plant matter in every corner of the Earth - the best they could do was analyze small plots of one-tenth of a hectare or less.
The notion of continuously tracking global production to discover the true state of the globe's biota was not even considered.
Then, in the 1980s, ecologists realized that satellites could track production, and enlisted NASA to collect the data.
For the first time, ecologists did not need to rely on rough
estimates or anecdotal evidence of the health of the ecology:
They could objectively measure the land's output and soon did -
on a daily basis and down to the last kilometer.
The results surprised Steven Running of the University of Montana and Ramakrishna Nemani of NASA, scientists involved in analyzing the NASA satellite data.
They found that over a period of almost two decades, the Earth as a whole became more bountiful by a whopping 6.2%.
About 25% of the Earth's vegetated landmass - almost 110 million square kilometres - enjoyed significant increases and only 7% showed significant declines.
When the satellite data zooms in, it finds that each square metre of land, on average, now produces almost 500 grams of greenery per year.
Why the increase? Their 2004 study, and other more recent ones, point to the warming of the planet and the presence of CO2, a gas indispensable to plant life.
CO2 is nature's fertilizer, bathing the biota with its life-giving nutrients. Plants take the carbon from CO2 to bulk themselves up - carbon is the building block of life - and release the oxygen, which along with the plants, then sustain animal life.
As summarized in a report last month, released along with a
petition signed by 32,000 U. S. scientists who vouched for the
benefits of CO2:
"Higher CO2 enables plants to grow faster
and larger and to live in drier climates.
Plants provide food for animals, which are thereby also enhanced.
The extent and diversity of plant and animal life have both increased substantially during the past half-century."
From the 2004 abstract: Our results indicate that global changes in climate have eased several critical climatic constraints to plant growth, such that net primary production increased 6% (3.4 petagrams of carbon over 18 years) globally.
The largest increase was in tropical ecosystems.
Amazon rain forests accounted for 42% of the global increase in net primary production, owing mainly to decreased cloud cover and the resulting increase in solar radiation.
Lush as the planet may now be, it is as nothing compared to earlier times, when levels of CO2 and Earth temperatures were far higher.
In the age of the dinosaur, for example, CO2 levels may have been five to 10 times higher than today, spurring a luxuriantly fertile planet whose plant life sated the immense animals of that era. Planet Earth is also much cooler today than during the hothouse era of the dinosaur, and cooler than it was 1,000 years ago during the Medieval Warming Period, when the Vikings colonized a verdant Greenland.
Greenland lost its colonies and its farmland during the Little Ice Age that followed, and only recently started to become green again.
This blossoming Earth could now be in jeopardy, for reasons both natural and man-made.
According to a growing number of scientists, the period of global warming that we have experienced over the past few centuries as Earth climbed out of the Little Ice Age is about to end.
The oceans, which have been releasing their vast store of carbon dioxide as the planet has warmed - CO2 is released from oceans as they warm and dissolves in them when they cool - will start to take the carbon dioxide back.
With less heat and less carbon dioxide, the planet could become less hospitable and less green, especially in areas such as Canada's Boreal forests, which have been major beneficiaries of the increase in GPP and NPP.
Doubling the jeopardy for Earth is man.
Unlike the many scientists who welcome CO2 for its benefits, many other scientists and most governments believe carbon dioxide to be a dangerous pollutant that must be removed from the atmosphere at all costs.
Governments around the world are now enacting massive programs in an effort to remove as much as 80% of the carbon dioxide emissions from the atmosphere.
If these governments are right, they will have done us all a service. If they are wrong, the service could be all ill, with food production dropping world wide, and the countless ecological niches on which living creatures depend stressed.
The second order effects could be dire, too.
To bolster food production, humans will likely turn to energy intensive manufactured fertilizers, depleting our store of non-renewable resources.
Techniques to remove carbon from the atmosphere also sound alarms.
Carbon sequestration, a darling of many who would mitigate climate change, could become a top inducer of earthquakes, according to Christian Klose, a geohazards researcher at Columbia University's Lamont-Doherty Earth Observatory.
Because the carbon sequestration schemes tend to be located near cities, he notes, carbon-sequestration-caused earthquakes could exact an unusually high toll.
Amazingly, although the risks of action are arguably at least as real as the risks of inaction, Canada and other countries are rushing into Earth-altering carbon schemes with nary a doubt.
Environmentalists, who ordinarily would demand a full-fledged environmental assessment before a highway or a power plant can be built, are silent on the need to question proponents or examine alternatives.
Earth is on a roll. Governments are too.
We will know soon enough if we're rolled off a cliff.
| 2009-04-20 | en | Richard Lindzen: Global Warming & Greentech |
| 2009-04-18 | en | Reforesting Reduces Droughts |
| de | en | fr |
|---|---|---|
| Auswirkungen des Klimas | Effects of Climate Change | Conséquences du changement climatique |
| Auswirkungen auf die Biosphäre der Erde | Impact on the bioshphere | Impacte sur la biosphère |
| de | en | fr |
|---|---|---|
| Energie, Teil II | Energy, Part II | Énergie, partie II |
| Bioenergie | Bio Energy | Energie biologique |