Tag: 2019上海油压

first_imgArticle published by Glenn Scherer 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 overSponsored Agriculture, Cattle, Cattle Pasture, Cattle Ranching, Deforestation, Drivers Of Deforestation, Environment, Forests, Green, Industrial Agriculture, Land Use Change, Soy, Tropical Deforestation center_img A new study has found that abandoned pasturelands in the Brazilian Cerrado do not regain their former biodiversity even after as much as 25 years. The Cerrado biome once covered 2 million square kilometers, but its rapid conversion by agribusiness means that less than half the region’s native vegetation remains.Researchers sampled 29 Cerrado pasture tracts that had been abandoned for between 3 and 25 years and found that native plants and animals largely didn’t return. Up to a quarter century after abandonment, restored savannas continued to lack 37 percent of their original species.Brazil’s Forest Code requires that at least 20 percent of private rural Cerrado property not be cultivated. However the new study suggests that the code may not be fully achieving its goal of protecting and restoring native species if the conserved land is degraded pasture, since native vegetation will not come back.The scientists suggest that one way of boosting biodiversity would be to use fire as a land management tool. Fire is a naturally occurring process in the Cerrado. Its artificial suppression allows trees to grow up, reducing biodiversity. So the reintroduction of fire could help restore native grasses as well as other species. Cerrado landscape, characterized by sparse trees dotting a continuous grassy ground cover. Image by Alex Costa/Mighty EarthOnce Cerrado savanna has been converted to pasture it does not fully regain its former flora and fauna, even after a quarter century, recent research has found. The Brazilian Cerrado biome, east and south of the Amazon biome, once covered 2 million square kilometers (772,204 square miles), but rapid conversion by agribusiness means less than half remains today. The region’s native vegetation and soils are important for storing carbon and curbing global warming.The new study, published in the Journal of Applied Ecology sampled 29 Cerrado tracts which had previously been used for agricultural purposes, but had been abandoned for anywhere between 3 and 25 years. No matter how long since the land was last grazed, researchers found that native plants and animals that had lived there did not return.“The big question of this research was, once land has been abandoned, can it actually be restored?” explained study co-author Giselda Durigan from the Forest Institute in Sao Paulo, Brazil. “We have shown that it’s basically impossible.”Researchers found that abandoned Cerrado cattle pasture does not regain its native biota, even after as much of 25 years of passive recovery. Image by Rhett A. Butler/MongabayThe primary attributes of natural savanna biodiversity that remained absent from abandoned agricultural lands were native grasses, forbs and shrubs — extremely important habitat and food for a variety of native animals including birds, lizards, foxes, wolves, and deer. Up to 25 years after abandonment, restored savannas continued to lack 37 percent of their original species.The researchers observed that of the 17 grass species recorded in natural savanna habitat, only three were to be found in abandoned pastures. Native grasses, which accounted for 23 percent of natural savanna land, were restricted to just 2 percent of the ground cover in abandoned pastures, and of the 29 abandoned pastures surveyed, 22 had no native grass cover at all.Most of the abandoned agricultural tracts also contained invasive “exotic” grasses, primarily imported from Africa to Brazil in the 1970s; these species typically displace and replace native grasses because they are more competitive.These results may not bode well for current Brazilian environmental policy: the primary reason pasture land in the study had been abandoned by landowners was to comply with Brazil’s key conservation law, the New Forest Code enacted by Congress in 2012 and upheld by the country’s Supreme Court in March. That code requires that at least 20 percent of all private rural property owned within the Cerrado not be used agriculturally, with the assumption that these abandoned pastures and croplands would revert fully over time to native vegetation.The new study shows that this is not the case, even after a quarter century of abandonment, demonstrating that the code may not be achieving its intended habitat restoration goal.“Even though restoration efforts do tend to comply with Brazilian law,” Derigan said, “the legislation doesn’t make any comments or restrictions about the quality of that vegetation.”She explained that the most important finding of the research was that even though abandoned pasture does regenerate quite rapidly, it is still much poorer in terms of biological value and diversity, than what was originally found there.The researchers suggest three active management techniques for restoring native species to abandoned pasture: removing exotic grasses introduced from Africa; replacing those grasses with native ones; and reintroducing fire, burning the restored savannah habitat every 3 or 4 years to prevent the growth of trees and the creation of encroached savannas. Image by Rodolfo Abreu/North Carolina State University and Giselda DuriganThe need for fire managementWhat makes the Cerrado, and other savannas around the world, uniquely important ecosystems is that they possess a diverse mosaic of flora and fauna, in a habitat characterized by sparse trees scattered across a continuous grassy ground cover.If not curtailed by periodic fires, these savannas have a natural tendency to densify and become forests, thereby losing a lot of their original animal and plant life, according to the researchers. This low-diversity forest state is referred to as an “encroached forest,” and it tends to have around two fifths lower total ground cover, less than half the ground layer species richness, and about a twelfth of the native grass cover.Using fire to reduce encroachment is therefore often an effective tool for retaining savanna biodiversity.Researcher Derigan manages an ecological station in Sao Paulo, so has witnessed first hand how the absence of fire impoverishes savanna habitat. “I’ve clearly seen my station losing diversity in the thirty years I’ve been working here,” she said. “It was a mosaic and now many species of lizards, birds and mammals are simply disappearing; they are endemic to savannas and now there’s no habitat for them here.”According to the researchers, the same dynamic applies to abandoned pastures. If fire doesn’t occur there, after around 49 years the land will naturally become a low-diversity forest, rather than a biodiversity rich, grassy shrubland. So, it seems logical that the controlled reintroduction of fire to abandoned agricultural lands could help them regain savanna biodiversity over time.The Brazilian Cerrado is inhabited by 60 IUCN listed Vulnerable animal species. Cerrado mammals include the Cerrado fox (Lycalopex vetulus), maned wolf (Chrysocyon brachyurus), giant anteater (Myrmecophaga tridactyla), jaguar (Panthera onca), tapir (Tapirus terrestres), marsh deer (Blastocerus dichotomus), and pampas deer (Ozotoceros bezoarticus). Image by Jim Wickens/Mighty Earth“Without fire, these abandoned lands become nothing more than a Cerradão [big Cerrado]” said Derigan, referring to savanna forest which is “poor in diversity of plants and animals.”The researchers do, however, point out that if the aim of restoration is not greater biodiversity, but rather enhanced carbon sequestration (in order to either mitigate or defer global warming), or to rapidly regenerate soil cover, then “passive restoration,” avoiding the use of fire management, could be effective.If the goal of restoration is recovery and maintenance of the natural savanna ecosystem, “active restoration” is necessary. This active restoration can vary in cost and effort, ranging from the removal of trees, to controlling exotic grasses and reintroducing native grasses and shrubs.Derigan laid out a three-step approach to native savanna restoration in her interview with Mongabay:“The first step is removing exotic grasses that were introduced from Africa; the second step is replacing those grasses with native ones; and the third, and more difficult, is to reintroduce fire as a management tool,” she said. “If we don’t burn these savannas every 3 or 4 years, they will become encroached savannas.”Implementing this three-step process has its challenges: it requires reversing the long established mind-set of decision-makers to stop seeing fire as destructive, and instead conceptualize it as a useful tool for maintaining open savanna ecosystems in Brazil.The historical use of fire for deforestation to create new pasture and croplands has generated a lasting perception that fire’s use is always ecologically damaging. This view, reinforced by the assumption that fire adds to the release of greenhouse gases and so to climate change, has helped lead to Brazil’s current policies of fire suppression.On the contrary, Derigan and others argue, Cerrado ecosystems depend on a fire regime to maintain their structure and diversity.Native Cerrado grasses, forbs and shrubs are extremely important habitat and food for a variety of native animals including foxes, deer, lizards and birds. Image by Alex Costa/Mighty EarthThe need to limit deforestationThe new research also clearly demonstrates the irreversible ecological impacts of deforestation and, as Derigan puts it, “shows that it is imperative that we stop converting the Cerrado” to soy, corn and cotton fields, and cattle grazing lands.A more ecologically effective conservation approach would be to protect Cerrado tracts covered in native vegetation, while using already degraded lands for agricultural expansion. But this approach often runs up against the New Forest Code, since it doesn’t differentiate between native vegetation and degraded lands. So implementation would likely demand the code’s revision so as to be guided by the science.“This paper is extremely important and timely,” said Lisa Rausch, a researcher from the University of Wisconsin who studies the impacts of agricultural expansion in the Cerrado. “These new findings – showing that regrowth on these abandoned pastures is likely to remain low in biodiversity in the absence of significant intervention – highlight the benefits of using such areas for soy expansion while saving remaining native vegetation.”This conservation strategy wouldn’t only offer a win-win for Brazil: there are half a billion acres of degraded land across Latin America where small and large scale farmers, as well as commodities companies, could expand their enterprises without sacrificing native ecosystems.CitationCava MGB, Pilon NAL, Ribeiro MC, Durigan G (2018). Abandoned pastures cannot spontaneously recover the attributes of old‐growth savannas. J Appl Ecol.  55(1164–1172). https://doi.org/10.1111/1365-2664.13046Banner image: Cattle in Latin America. Rhett A. Butler/MongabayThe cattle which the Cerrado supports help feed the developed world’s hunger for beef. Researchers recommend that rather than converting native Cerrado vegetation to croplands, degraded pastures should be utilized to grow crops such as soy, cotton and corn, while areas of native vegetation should be prioritized for conservation. Image by Rhett A. Butler/Mongabaylast_img read more