Drylands greener with forests than previously thought

first_imgArticle published by John Cannon The new study, published Thursday in the journal Science, increases global forest cover estimates by 9 percent.Using very high resolution imagery, the team calculated that dryland forest cover was 40 to 47 percent higher above current totals.The researchers calculate that 1.1 million hectares (4,247 square miles) of forest covers the Earth’s drylands. New research has, for the first time, made use of very high resolution images of Earth’s drylands, revealing that they hold a much larger portion of the world’s forests than previously thought.Employing a new method only possible because of the fine-grained quality of these images and the frequency at which they were taken, a team of scientists from 15 different institutions has found 467 million hectares (1.8 million square miles) of dryland forests that has escaped our notice until now. The findings, reported Thursday in the journal Science, notch up estimates of the world’s forest cover by 9 percent or more – high enough to impact global carbon budgets and open new doors to conservation in arid regions.Jean-François Bastin, a remote sensing ecologist at the Food and Agriculture Organization (FAO) of the United Nations in Rome and the lead author of the study, said the team was “surprised and stunned” to see the bump in dryland forest cover from their assessment. Globally, 1,079 million hectares (4.166 million square miles) of forest covers this arid biome – from  40 to 47 percent above previous estimates.Figure 1 from Bastin et al., 2017, shows the extent of Earth’s drylands and forest coverage.These sections of the Earth, where more water is lost to evaporation and transpiration by plants than falls as precipitation, account for roughly 41 percent of land on Earth. They stretch from the tropics to the upper latitudes of the Northern and Southern Hemispheres. But ecologists have often paid more attention to tropical rainforests or boreal forests because they cover larger areas than dryland forests.“When you have big decisions and we are trying to think about a way to do forest restoration, to do forest conservation, basically drylands were always put to the side,” Bastin said in a Skype interview.It turns out, however, that the new calculations of dryland forest area put them in the same range as tropical forest area. Tropical forests covered 1,156 million hectares (4.463 million square miles) in 2000.Part of the reason for the underestimation of dryland forests in earlier studies has to do with methodology. The “classical” approach for quantifying forest cover relies on vegetation “signals” from a few selected points that indicate the presence of forest. Then, scientists use models to estimate how much land area is forest.This approach works well for more uniform areas of forest, but with drylands, assessments until now have been understood to be “limited,” Bastin said.A coolabah (Eucalyptus victrix) forest in the Pilbara region of Western Australia. Photo and caption by TERN AusplotsFor this study, the team examined 0.5-hectare sample plots – 213,795 of them, to be exact – and counted individual trees in the canopy using images with resolutions of 1 meter (about 39 inches) or less. That allowed them to include sections of forest that had previously slipped past the model-based approach.In addition to forest and tree cover, the researchers assessed 70 different attributes, including the locations of roads, settlements and croplands.“The most striking information that we had was about the difference in terms of dryland forest cover,” Bastin said. Being able to tease apart areas that were true forest from areas that just appeared to be forests at lower resolutions – such as agroforestry plots, for example – allowed the team to produce an even more accurate tabulation of global forest cover.The data detailing the other attributes will no doubt be useful in future research, he added, especially since the their findings demonstrate the importance of forests found in drier parts of the world.A blackbox (Euculayptus largiflorens) forest in the Murraylands of South Australia. Photo and caption by TERN Ausplots“There is a lot to do in those regions, and we should be more focused about what is happening there,” Bastin said. For example, “What is their role … for global carbon cycling?”The new estimate of dryland forest cover could mean that global carbon stocks are 20 percent greater than we thought they were.The authors also write that a more prominent role for dryland forests could lead to solutions “to mitigate climate change, combat desertification, and support the conservation of biodiversity and ecosystem services that underpin human livelihoods.” Tropical dry forest was recently found to be the most endangered biome on the planet.“These are very arid regions,” Bastin said. “You don’t have a lot of competition for the lands.” He pointed to efforts such as the Great Green Wall aimed at creating a 7,000-kilometer (4,350-mile) barrier of vegetation against drought and desertification across the African Sahel, home to some of the world’s poorest countries.“It could be a win-win solution for many people.”Baobabs near Morondava, Madagascar. Photo by Rhett A. ButlerA baobab (Adansonia spp.) forest in Senegal during the dry season. Photo and caption by FAO/FaiduttiFEEDBACK: Use this form to send a message to the author of this post. If you want to post a public comment, you can do that at the bottom of the page.CITATIONBastin, J., Berrahmouni, N., Grainger, A., Maniatis, D., Mollicone, D., Moore, R., … Mamane, B. (2017). The extent of forest in dryland biomes, Science, 356(6338), 635–638. Popular in the CommunitySponsoredSponsoredOrangutan found tortured and decapitated prompts Indonesia probeEMGIES17 Jan, 2018We will never know the full extent of what this poor Orangutan went through before he died, the same must be done to this evil perpetrator(s) they don’t deserve the air that they breathe this has truly upset me and I wonder for the future for these wonderful creatures. So called ‘Mankind’ has a lot to answer for we are the only ones ruining this world I prefer animals to humans any day of the week.What makes community ecotourism succeed? In Madagascar, location, location, locationScissors1dOther countries should also learn and try to incorporateWhy you should care about the current wave of mass extinctions (commentary)Processor1 DecAfter all, there is no infinite anything in the whole galaxy!Infinite stupidity, right here on earth.The wildlife trade threatens people and animals alike (commentary)Anchor3dUnfortunately I feel The Chinese have no compassion for any living animal. They are a cruel country that as we knowneatbeverything that moves and do not humanily kill these poor animals and insects. They have no health and safety on their markets and they then contract these diseases. Maybe its karma maybe they should look at the way they live and stop using animals for all there so called remedies. DisgustingConservationists welcome China’s wildlife trade banThobolo27 JanChina has consistently been the worlds worst, “ Face of Evil “ in regards our planets flora and fauna survival. In some ways, this is nature trying to fight back. This ban is great, but the rest of the world just cannot allow it to be temporary, because history has demonstrated that once this coronavirus passes, they will in all likelihood, simply revert to been the planets worst Ecco Terrorists. Let’s simply not allow this to happen! How and why they have been able to degrade this planets iconic species, rape the planets rivers, oceans and forests, with apparent impunity, is just mind boggling! Please no more.Probing rural poachers in Africa: Why do they poach?Carrot3dOne day I feel like animals will be more scarce, and I agree with one of my friends, they said that poaching will take over the world, but I also hope notUpset about Amazon fires last year? Focus on deforestation this year (commentary)Bullhorn4dLies and more leisSponsoredSponsoredCoke is again the biggest culprit behind plastic waste in the PhilippinesGrapes7 NovOnce again the article blames companies for the actions of individuals. It is individuals that buy these products, it is individuals that dispose of them improperly. If we want to change it, we have to change, not just create bad guys to blame.Brazilian response to Bolsonaro policies and Amazon fires growsCar4 SepThank you for this excellent report. I feel overwhelmed by the ecocidal intent of the Bolsonaro government in the name of ‘developing’ their ‘God-given’ resources.U.S. allocates first of $30M in grants for forest conservation in SumatraPlanet4dcarrot hella thick ;)Melting Arctic sea ice may be altering winds, weather at equator: studyleftylarry30 JanThe Arctic sea ice seems to be recovering this winter as per the last 10-12 years, good news.Malaysia has the world’s highest deforestation rate, reveals Google forest mapBone27 Sep, 2018Who you’re trying to fool with selective data revelation?You can’t hide the truth if you show historical deforestation for all countries, especially in Europe from 1800s to this day. WorldBank has a good wholesome data on this.Mass tree planting along India’s Cauvery River has scientists worriedSurendra Nekkanti23 JanHi Mongabay. Good effort trying to be objective in this article. I would like to give a constructive feedback which could help in clearing things up.1. It is mentioned that planting trees in village common lands will have negative affects socially and ecologically. There is no need to even have to agree or disagree with it, because, you also mentioned the fact that Cauvery Calling aims to plant trees only in the private lands of the farmers. So, plantation in the common lands doesn’t come into the picture.2.I don’t see that the ecologists are totally against this project, but just they they have some concerns, mainly in terms of what species of trees will be planted. And because there was no direct communication between the ecologists and Isha Foundation, it was not possible for them to address the concerns. As you seem to have spoken with an Isha spokesperson, if you could connect the concerned parties, it would be great, because I see that the ecologists are genuinely interested in making sure things are done the right way.May we all come together and make things happen.Rare Amazon bush dogs caught on camera in BoliviaCarrot1 Feba very good iniciative to be fallowed by the ranchers all overSponsoredcenter_img Adaptation To Climate Change, Agriculture, Agroforestry, Biodiversity, Biodiversity Hotspots, Carbon Conservation, Climate Change, Climate Change And Biodiversity, Climate Change And Conservation, Climate Change And Forests, Conservation, Conservation And Poverty, Deforestation, Deserts, Drought, Dry Forests, Environment, Forest Carbon, Forests, Rainforests, Remote Sensing, Satellite Imagery last_img read more

Cigital has always been committed to building se

first_img“Cigital has always been committed to ‘building security in’—integrating security directly into the development process,” said Joel Scambray, principal security evangelist at Cigital. “The Agile Security Manifesto illustrates how security can be effectively integrated into the development process and provide productivity gains by eliminating the need to remediate security flaws late in the cycle.”The four principles are:Relying on developers and testers for security instead of security specialistsMaking security a part of the process instead of an afterthoughtImplementing secure features instead of adding security featuresMitigating risks instead of fixing bugs“If you emphasize critical security responsibilities in the development process, the bugs that create vulnerabilities are eliminated at the source,” said Jim Ivers, chief marketing officer of Cigital. “This in turn significantly reduces remediation time, and developer productivity is actually improved. We have a client who reports savings of hundreds of thousands of developer hours and a 15% productivity gain.”Ivers added the original agile manifesto stated that software should be valuable, and for software to be valuable it must be secure. In an effort to make security more of a priority in an agile development environment, software security provider Cigital announced it is releasing an Agile Security Manifesto. The security manifesto builds on the original Agile Manifesto for software development, but adds four principles designed to promote security.According to the company, integrating security into an agile environment hasn’t been broadly adopted, and when the original manifesto was introduced in 2001, security wasn’t a big concern.(Related: How safe is the Android ecosystem?)last_img read more

Tableau is gearing up for version 10 The general

first_imgTableau is gearing up for version 10. The general availability of version 10 of its analytics platform will come sometime in the next few weeks, and today the company detailed the expected improvements and changes to it.For those generating reports with charts and graphs, Tableau has redone a lot of the basic visualization foundations. This includes the introduction of a new specifically designed font, a new color palette chosen for high contrast between chart items, and a range of new default settings that will make reports look better right from the get go.(Related: Open-source blueprint Pepperoni released for mobile development)Tableau 10 will also include more support for mobile users. When creating dashboards, for example, users can now customize those views to fit mobile screens on phones and tablets. Each set of data can have multiple device-specific views, enabling the same dashboard to be viewed across devices. These mobile capabilities extend to security as well. Mobile devices can be centrally controlled so that access to critical dashboards can be revoked in a central location. Dashboards can also be used offline, and are automatically updated when online again.Chris Stolte, chief development officer and cofounder of Tableau Software, said, “Tableau 10 includes new capabilities that deliver more analytical power than ever before. The new design makes data the hero. Data integration helps maximize time spent on analysis. Data analytics innovations, like the drag-and-drop clusters, help people do more advanced analysis of their data without needing to program. And enterprise advancements continue to up the standard for delivering a governed, trusted self-service environment.”Also in this version are new handlers for data. Cross-database joins allow developers to unify data sources at the row level. This is supplemented with cross-database filtering, which allows a single filter to be applied to multiple data sources.Tableau 10 also includes new APIs for accessing the data and business intelligence created and used by the platform. Using these APIs, developers can embed business intelligence into their applications. Tableau is also now suitable for multi-tenant deployments, thanks to more extensive access controls.last_img read more