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sabato 2 marzo 2019

# gst phyto: an evidence for alternative transient states

AA << have discovered that plant communities follow different trajectories when they adapt to dryer conditions than when they adapt to more frequently flooded conditions. Further, in two side studies in the same experiment they found that flooding history of the vegetation alter the response of germinating seeds and of litter decomposition to the current conditions. >>

<< This is one of the most direct experimental evidence to date for alternative transient states, >> Judith Sarneel.

Plant communities do not take the same route from A to B as from B to A. Umea University. Feb 25, 2019.

https://m.phys.org/news/2019-02-route.html

Judith M. Sarneel  Maria Dolores Bejarano, et al. Local flooding history affects plant recruitment in riparian zones. Journal of Vegetation Science.
doi: 10.1111/jvs.12731 Feb 3, 2019

https://onlinelibrary.wiley.com/doi/abs/10.1111/jvs.12731

venerdì 1 marzo 2019

# behav:  familiarity vs. aggression (among the fish Poecilia formosa)

<< Contrary to our predictions, fish that were the most familiar with each other showed the highest levels of aggression. Additionally, fish that were less familiar with each other exhibited the highest group cohesion and took the longest to begin feeding, compared to the more familiar fish. >>

Carolina Doran, David Bierbach, Kate L. Laskowski.  Familiarity increases aggressiveness among clonal fish. Animal Behaviour. Volume 148, February 2019, Pages 153-159. doi: 10.1016/j.anbehav.2018.12.013

https://www.sciencedirect.com/science/article/pii/S0003347218303725?via%3Dihub

Fish with a high level of familiarity are more aggressive towards each other. Forschungsverbund Berlin e.V. (FVB). Feb 19, 2019

https://m.phys.org/news/2019-02-fish-high-familiarity-aggressive.html

giovedì 28 febbraio 2019

# acad aibot: the real success (also) in scientific research: the automatic search for deviations ...

<< Imagine that you have a lot of data, but you do not really know what you are looking for. So what do you do? In that case you use a computer that automatically searches for deviations. >>

Search engine for new breakthroughs in physics. Radboud University.  Feb 19, 2019

https://m.phys.org/news/2019-02-breakthroughs-physics.html

M. Aaboud, G. Aad, et al. A strategy for a general search for new phenomena using data-derived signal regions and its application within the ATLAS experiment. The European Physical Journal C (2019). doi: 10.1140/epjc/s10052-019-6540-y

https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-019-6540-y

martedì 26 febbraio 2019

# gst: apropos chaotic cooperation

<< Ecological theory has demonstrated that when direct, pairwise interactions among a group of species are too numerous, or too strong, then the coexistence of these species will be unstable to any slight perturbation. >>

Stacey Butler & James P. O’Dwyer.
Stability criteria for complex microbial communities. Nature Communications Volume 9, Article number: 2970 (2018)

https://www.nature.com/articles/s41467-018-05308-z

https://www.biorxiv.org/content/10.1101/293605v2

<< Pairs of organisms that live off each other sometimes do so well in the mathematical simulations - thriving exponentially in extreme cases, in what Robert May, the theoretical ecology pioneer, once called "an orgy of mutual benefaction" — that everything else can go extinct. >>

AA << explored more precisely how the give-and-take in mutualism affects ecosystem stability and how, under the right conditions, it might contribute to it.  >>

Veronique Greenwood. How Nature Defies Math in Keeping Ecosystems Stable. Sep 26, 2018.

https://www.quantamagazine.org/how-nature-defies-math-in-keeping-ecosystems-stable-20180926/

https://twitter.com/QuantaMagazine/status/1099390696455323651

domenica 24 febbraio 2019

# soc: a study about income: more than 63% of American children live in "asset" poverty

<< More than 63 percent of American children and 55 percent of Americans live in "asset" poverty, meaning they have few or no assets to rely on in the event of a financial shock such as a job loss, a medical crisis or the recent federal government shutdown, >>

Michelle Klampe. Nearly two-thirds of American children live in asset poverty, new study shows. Oregon State University.  Feb 21, 2019.

https://m.phys.org/news/2019-02-two-thirds-american-children-asset-poverty.html

David W. Rothwell,  Timothy Ottusch, Jennifer K. Finders. Asset poverty among children: A cross-national study of poverty risk. Children and Youth Services Review. Volume 96, January 2019, Pages 409-19. doi: 10.1016/j.childyouth.2018.11.045. Nov 23, 2018.

https://www.sciencedirect.com/science/article/pii/S0190740918305759?via%3Dihub

# soc: a study about cities: the "smart city" phenomenon

AA selected 27 smart cities - from a full list of over 5550 worldwide cities with 100K inhabitants or more - for in-depth analysis, based on 346 documents, and characterised in terms of their 'smart city' dimensions.

https://3c1703fe8d.site.internapcdn.net/newman/csz/news/800/2019/topsmartciti.jpg

Top smart cities are global cities, new research reveals. University of Glasgow.  Feb 20, 2019.

https://m.phys.org/news/2019-02-smart-cities-global-reveals.html

Simon Joss, Frans Sengers, et al. The Smart City as Global Discourse: Storylines and Critical Junctures across 27 Cities. Journal of Urban Technology, 26:1, 3-34, doi: 10.1080/10630732.2018.1558387. Feb 13, 2019.

https://www.tandfonline.com/doi/full/10.1080/10630732.2018.1558387

venerdì 22 febbraio 2019

# gst: how a change can make catastrophic systems linger for longer

<< Many parts of Australia have suffered a run of severe and, in some cases, unprecedented weather events this summer. One common feature of many of these events (..) was that they were caused by weather systems that parked themselves in one place for days or weeks on end. >>

Steve Turton. How climate change can make catastrophic weather systems linger for longer. Feb 18, 2019

https://theconversation.com/how-climate-change-can-make-catastrophic-weather-systems-linger-for-longer-111832  

https://phys.org/news/2019-02-climate-catastrophic-weather-linger-longer.html