ApocaDocuments (6) for the "Recovery" scenario from this week
[see full week] ~ [see full Recovery scenario and stories]
|
Sat, Jun 26, 2010
from Smithsonian, via EurekAlert:
Biodiversity's holy grail is in the soil
The experiments show that underground organisms are key to the maintenance of species diversity and patterns of tree-species relative abundance. The detrimental effects of soil organisms from adult trees not only explain seedling growth and survival patterns, but moreover that these effects are much more severe for seedlings of rare species than for seedlings of common species....
"Two completely different approaches--analysis of long-term forest dynamics observations and direct experiments on Panama's Barro Colorado Island--are telling us to look for the answer under the ground. Scott's experiments provide a direct comparison across species of how much their seedlings suffer from a sort of 'self inhibition' mediated by these soil organisms."
Biologists refer to soil as a "black box" because it is notoriously difficult to study a tangle of roots, bacteria, fungi, tiny insects and other creatures without isolating or changing them. Very similar results in the greenhouse and in the field reveal that plant interactions with soil biota alone--not nutrients, insects, mammals or above-ground diseases--are sufficiently powerful and specific to explain why multiple species co-exist and importantly the strength of those interactions can be measured and plant species that are most abundant are least influenced by the soil biota around their parents.
"We have dealt yet another blow to the ailing Neutral Theory of Biodiversity, which is premised on the idea that all species are the same," said Herre. "These two publications provide strong evidence that there are stabilizing mechanisms that maintain diversity, and thus that neutral dynamics do not explain plant species diversity and abundance." ...
|
Y'mean a rose isn't a rhododendron isn't a ribwort?
ApocaDoc
permalink
|
Thu, Jun 24, 2010
from Penn State, via EurekAlert:
Discovery of how coral reefs adapt to global warming could aid reef restoration
Discovering how corals respond to ocean warming is complicated because corals serve as hosts to algae. The algae live in the coral and feed on its nitrogen wastes. Through photosynthesis, the algae then produce the carbohydrates that feed the coral. When this complex and delicate symbiosis is upset by a rise in ocean temperature, the coral may expel the algae in a phenomenon known as coral bleaching, which may cause the death of both algae and coral. The challenge is to figure out why some corals cope with the heat stress better than others.... "Our study shows that the response of larvae to changing conditions depends upon where the parent colonies lived," says Baums. "Clearly the coral larvae from Mexico and Florida respond differently to heat stress, even though they belong to the same species, showing adaptations to local conditions. The two populations have different adaptive potential."... "Variation among populations in gene expression offers the species as a whole a better chance of survival under changing conditions," Baums said. "We might be able to screen adult populations for their ability to produce heat-resistant larvae and focus our conservation efforts on those reefs." ...
|
If only ecosystems worked that way.
ApocaDoc
permalink
|
Thu, Jun 24, 2010
from Reuters, via DesdemonaDespair:
Methane in Gulf of Mexico 'astonishingly high' - Nearly a million times above background levels
Texas A&M University oceanography professor John Kessler, just back from a 10-day research expedition near the BP Plc oil spill in the gulf, says methane gas levels in some areas are "astonishingly high."
Kessler's crew took measurements of both surface and deep water within a 5-mile (8 kilometer) radius of BP's broken wellhead.
"There is an incredible amount of methane in there," Kessler told reporters in a telephone briefing.
In some areas, the crew of 12 scientists found concentrations that were 100,000 times higher than normal.
"We saw them approach a million times above background concentrations" in some areas, Kessler said.
The scientists were looking for signs that the methane gas had depleted levels of oxygen dissolved in the water needed to sustain marine life.
"At some locations, we saw depletions of up to 30 percent of oxygen based on its natural concentration in the waters. At other places, we saw no depletion of oxygen in the waters. We need to determine why that is," he told the briefing. ...
|
If only our astonishment derived from how effectively a corporate entity could react to an unexpected crisis.
ApocaDoc
permalink
|
Wed, Jun 23, 2010
from National Research Council, Ocean Studies Board:
Ocean Acidification: A National Strategy to Meet the Challenges of a Changing Ocean
Some of the strongest evidence of the potential impacts of ocean acidification on marine ecosystems comes from experiments on calcifying organisms; acidifying seawater to various extents has been shown to affect the formation and dissolution of calcium carbonate shells and skeletons in a range of marine organisms including reef-building corals, commercially-important mollusks such as oysters and mussels, and many phytoplankton and zooplankton species that form the base of marine food webs. It is important to note that the concentration of atmospheric CO2 is rising too rapidly for natural, CaCO3-cycle processes to maintain the pH of the ocean.... Ocean acidification may affect wild marine fisheries directly by altering the growth or survival of target species, and indirectly through changes in species' ecosystems, such as predator and prey abundance or critical habitat.... Beyond the value of commercial or recreational shellfish harvests, shellfish resources such as oyster reefs and mussel beds provide valuable ecosystem services. ...
|
I wonder how you "meet the challenges" of a dead ocean?
ApocaDoc
permalink
|
Tue, Jun 22, 2010
from University of Alberta, via EurekAlert:
Life of plastic solar cell jumps from hours to 8 months
The research groups' development of an inexpensive, readily available plastic solar cell technology hit a wall because of a chemical leeching problem within the body of the prototype. A chemical coating on an electrode was unstable and migrated through the circuitry of the cell.
The team led by U of A and NINT chemistry researcher David Rider, developed a longer lasting, polymer coating for the electrode. Electrodes are key to the goal of a solar energy technology, extracting electricity from the cell.
Prior to the polymer coating breakthrough the research team's plastic solar cell could only operate at high capacity for about ten hours.
When Rider and his research co authors presented their paper to the journal, Advanced Functional Materials, their plastic solar cell had performed at high capacity for 500 hours. But it kept on working for another seven months. The team says the unit eventually stopped working when it was damaged during transit between laboratories. ...
|
Now this is plastic I can get behind!
ApocaDoc
permalink
|
Mon, Jun 21, 2010
from via DesdemonaDespair:
You should totally apologize to BP
I'm sorry that slavery was abolished. You could definitely use the free labor right now... I'm sorry, BP, that I don't have a car, because if I did, I could buy your gas, increase your profits and do my part in helping you pay for this most unfortunate natural disaster that has struck... Dadgummit! I'm just so sorry BP. We should be thanking you since you've made getting oil so much more convenient. ...
|
We're sorry, BP, that we aren't able to crowdsource away that pesky oil plume.
ApocaDoc
permalink
|
|
Other
Weeks' Archived
ApocaDocuments:
Sep 26 - Dec 31, 1969
Sep 19 - Sep 26, 2011
Sep 12 - Sep 19, 2011
Sep 5 - Sep 12, 2011
Aug 29 - Sep 5, 2011
Aug 22 - Aug 29, 2011
Aug 15 - Aug 22, 2011
Aug 8 - Aug 15, 2011
Aug 1 - Aug 8, 2011
Jul 25 - Aug 1, 2011
Jul 18 - Jul 25, 2011
Jul 11 - Jul 18, 2011
Jul 4 - Jul 11, 2011
Jun 27 - Jul 4, 2011
Jun 20 - Jun 27, 2011
Jun 13 - Jun 20, 2011
Jun 6 - Jun 13, 2011
May 30 - Jun 6, 2011
May 23 - May 30, 2011
May 16 - May 23, 2011
May 9 - May 16, 2011
May 2 - May 9, 2011
Apr 25 - May 2, 2011
Apr 18 - Apr 25, 2011
Apr 11 - Apr 18, 2011
Apr 4 - Apr 11, 2011
Mar 28 - Apr 4, 2011
Mar 21 - Mar 28, 2011
Mar 14 - Mar 21, 2011
Mar 6 - Mar 14, 2011
Feb 27 - Mar 6, 2011
Feb 20 - Feb 27, 2011
Feb 13 - Feb 20, 2011
Feb 6 - Feb 13, 2011
Jan 30 - Feb 6, 2011
Jan 23 - Jan 30, 2011
Jan 16 - Jan 23, 2011
Jan 9 - Jan 16, 2011
Jan 2 - Jan 9, 2011
Dec 26 - Jan 2, 2011
Dec 19 - Dec 26, 2010
Dec 12 - Dec 19, 2010
Dec 5 - Dec 12, 2010
Nov 28 - Dec 5, 2010
Nov 21 - Nov 28, 2010
Nov 14 - Nov 21, 2010
Nov 7 - Nov 14, 2010
Nov 1 - Nov 7, 2010
Oct 25 - Nov 1, 2010
Oct 18 - Oct 25, 2010
Oct 11 - Oct 18, 2010
Oct 4 - Oct 11, 2010
Sep 27 - Oct 4, 2010
Sep 20 - Sep 27, 2010
Sep 13 - Sep 20, 2010
Sep 6 - Sep 13, 2010
Aug 30 - Sep 6, 2010
Aug 23 - Aug 30, 2010
Aug 16 - Aug 23, 2010
Aug 9 - Aug 16, 2010
Aug 2 - Aug 9, 2010
Jul 26 - Aug 2, 2010
Jul 19 - Jul 26, 2010
Jul 12 - Jul 19, 2010
Jul 5 - Jul 12, 2010
Jun 28 - Jul 5, 2010
Jun 21 - Jun 28, 2010
Jun 14 - Jun 21, 2010
Jun 7 - Jun 14, 2010
May 31 - Jun 7, 2010
May 24 - May 31, 2010
May 17 - May 24, 2010
May 10 - May 17, 2010
May 3 - May 10, 2010
Apr 26 - May 3, 2010
Apr 19 - Apr 26, 2010
Apr 12 - Apr 19, 2010
Apr 5 - Apr 12, 2010
Mar 29 - Apr 5, 2010
Mar 22 - Mar 29, 2010
Mar 15 - Mar 22, 2010
Mar 7 - Mar 15, 2010
Feb 28 - Mar 7, 2010
Feb 21 - Feb 28, 2010
Feb 14 - Feb 21, 2010
Feb 7 - Feb 14, 2010
Jan 31 - Feb 7, 2010
Jan 24 - Jan 31, 2010
Jan 17 - Jan 24, 2010
Jan 10 - Jan 17, 2010
Jan 3 - Jan 10, 2010
Dec 27 - Jan 3, 2010
Dec 20 - Dec 27, 2009
Dec 13 - Dec 20, 2009
Dec 6 - Dec 13, 2009
Nov 29 - Dec 6, 2009
Nov 22 - Nov 29, 2009
Nov 15 - Nov 22, 2009
Nov 8 - Nov 15, 2009
Nov 1 - Nov 8, 2009
Oct 26 - Nov 1, 2009
Oct 19 - Oct 26, 2009
Oct 12 - Oct 19, 2009
Oct 5 - Oct 12, 2009
Sep 28 - Oct 5, 2009
Sep 21 - Sep 28, 2009
Sep 14 - Sep 21, 2009
Sep 7 - Sep 14, 2009
Aug 31 - Sep 7, 2009
Aug 24 - Aug 31, 2009
Aug 17 - Aug 24, 2009
Aug 10 - Aug 17, 2009
Aug 3 - Aug 10, 2009
Jul 27 - Aug 3, 2009
Jul 20 - Jul 27, 2009
Jul 13 - Jul 20, 2009
Jul 6 - Jul 13, 2009
Jun 29 - Jul 6, 2009
Jun 22 - Jun 29, 2009
Jun 15 - Jun 22, 2009
Jun 8 - Jun 15, 2009
Jun 1 - Jun 8, 2009
May 25 - Jun 1, 2009
May 18 - May 25, 2009
May 11 - May 18, 2009
May 4 - May 11, 2009
Apr 27 - May 4, 2009
Apr 20 - Apr 27, 2009
Apr 13 - Apr 20, 2009
Apr 6 - Apr 13, 2009
Mar 30 - Apr 6, 2009
Mar 23 - Mar 30, 2009
Mar 16 - Mar 23, 2009
Mar 9 - Mar 16, 2009
Mar 1 - Mar 9, 2009
Feb 22 - Mar 1, 2009
Feb 15 - Feb 22, 2009
Feb 8 - Feb 15, 2009
Feb 1 - Feb 8, 2009
Jan 25 - Feb 1, 2009
Jan 18 - Jan 25, 2009
Jan 11 - Jan 18, 2009
Jan 4 - Jan 11, 2009
Dec 28 - Jan 4, 2009
Dec 21 - Dec 28, 2008
Dec 14 - Dec 21, 2008
Dec 7 - Dec 14, 2008
Nov 30 - Dec 7, 2008
Nov 23 - Nov 30, 2008
Nov 16 - Nov 23, 2008
Nov 9 - Nov 16, 2008
Nov 2 - Nov 9, 2008
Oct 27 - Nov 2, 2008
Oct 20 - Oct 27, 2008
Oct 13 - Oct 20, 2008
Oct 6 - Oct 13, 2008
Sep 29 - Oct 6, 2008
Sep 22 - Sep 29, 2008
Sep 15 - Sep 22, 2008
Sep 8 - Sep 15, 2008
Sep 1 - Sep 8, 2008
Aug 25 - Sep 1, 2008
Aug 18 - Aug 25, 2008
Aug 11 - Aug 18, 2008
Aug 4 - Aug 11, 2008
Jul 28 - Aug 4, 2008
Jul 21 - Jul 28, 2008
Jul 14 - Jul 21, 2008
Jul 7 - Jul 14, 2008
Jun 30 - Jul 7, 2008
Jun 23 - Jun 30, 2008
Jun 16 - Jun 23, 2008
Jun 9 - Jun 16, 2008
Jun 2 - Jun 9, 2008
May 26 - Jun 2, 2008
May 19 - May 26, 2008
May 12 - May 19, 2008
May 5 - May 12, 2008
Apr 28 - May 5, 2008
Apr 21 - Apr 28, 2008
Apr 14 - Apr 21, 2008
Apr 7 - Apr 14, 2008
Mar 31 - Apr 7, 2008
Mar 24 - Mar 31, 2008
Mar 17 - Mar 24, 2008
Mar 10 - Mar 17, 2008
Mar 2 - Mar 10, 2008
Feb 24 - Mar 2, 2008
Feb 17 - Feb 24, 2008
Feb 10 - Feb 17, 2008
Feb 3 - Feb 10, 2008
Jan 27 - Feb 3, 2008
Jan 20 - Jan 27, 2008
Jan 13 - Jan 20, 2008
Jan 6 - Jan 13, 2008
Dec 30 - Jan 6, 2008
Dec 23 - Dec 30, 2007
Dec 16 - Dec 23, 2007
Dec 9 - Dec 16, 2007
Dec 2 - Dec 9, 2007
|
