Let there be lights, to help migratory cranes avoid power lines

first_imgAnimals, Birds, Conservation Solutions, Human-wildlife Conflict, Migration, Technology, Wildlife, Wildtech Article published by Sue Palminteri A test of a new system deploying ultraviolet (UV) lights on power lines greatly reduced potentially deadly collisions with the lines by migrating sandhill cranes.Developers of the Avian Collision Avoidance System, or ACAS, randomly assigned the system to be on or off each night of a four-month testing period.Turning on the lighting system reduced crane collisions by 98 percent and enabled crane flocks to more quickly and calmly avoid the power lines while in flight.Many birds can detect UV light, though humans cannot, so the system has potential to reduce a major threat to a range of migratory species without affecting the visibility of structures to humans. Cranes are celebrated for their large size, beauty, unique courtship dancing, and extensive annual migrations.Sandhill cranes (Antigone canadensis), for example, migrate north each year from wintering grounds in Mexico and the southwestern United States to breeding sites across Canada, the northern U.S., and eastern Siberia. Along the way, they stop to rest and refuel at various wetlands and river basins of the western and midwestern U.S.Stopover points are essential to the birds’ migrations and subsequent breeding periods. Although the loss of wetland habitats at stopover and breeding sites is the main threat to sandhills and other cranes, midflight collisions with power lines during migration affect 12 of the world’s 15 crane species, including sandhills.Every year, hundreds of thousands of sandhill cranes congregate on the Platte River in Nebraska during their spring migration, forming large flocks that use the river’s sandbars as a nighttime refuge before dispersing to local fields to feed during the day. Image courtesy of Larry Crist/USFWS.Electric utility companies mark power lines with glow-in-the-dark line markers to try to mitigate the problem. These attempts to make power lines more visible to these large birds have been only partially successful, however, as most collisions occur at night, when the power lines are least visible to birds.A new approach considers bird visionA team of engineering consultants at EDM International has developed a new system that shines near-ultraviolet (UV) lights on power lines, as many bird species are sensitive to UV frequencies. The team tested its system, which it calls the Avian Collision Avoidance System, or ACAS, at a major migratory stopover site for many thousands of sandhill cranes.Hundreds of sandhill cranes die each year by colliding with the power lines at their testing site, the Iain Nicholson Audubon Center at Rowe Sanctuary in Nebraska’s Central Platte River Valley, despite the lines having previously been marked with line markers.Use of the new system substantially reduced the number of collisions between the cranes and a power line that crosses the Central Platte River. The team published its findings and system designs earlier this year with the hopes of advancing a solution to the conflict between human structures and migratory wildlife.In searching for a better way to reduce bird-power line collisions, lead author James Dwyer and colleagues learned that many groups of birds are sensitive to energy wavelengths shorter than what humans can detect, which is roughly 400 nanometers (nm). They developed the ACAS using near-ultraviolet wavelengths of 320 to 400 nm to make the power lines more visible to the cranes without increasing their visibility to people.A power line lit up by near-ultraviolet lights mounted on the line’s supporting structures. Many bird species are sensitive to UV wavelengths, suggesting that the Avian Collision Avoidance System UV lights can help birds see human structures at night. Image courtesy of James F. Dwyer/EDM International, Inc.The system design mounts the UV lights on the supporting structures of a problematic power line and shines the lights on the line itself.“The lights go on the existing tower that holds up the power line,” Dwyer told Mongabay. “Ideally they go on the crossarm or lattice arm that supports the wires.”The construction they tested consisted of four low-wattage UV-A lights, powered by two solar panels and storage batteries, a control box, cables connecting the various components, and a remote control. The authors estimated their total cost came to roughly $6,000, including some UV lights they tested but didn’t deploy in their final version.The ACAS setup on a power line over the Central Platte River in Nebraska. Solar panels and batteries power the system, lights mounted on the posts light up the lines that cross the river. Image courtesy of James F. Dwyer/EDM International, Inc.They tested the ACAS between February and June of 2018, the period when migrating sandhill cranes were in the area. The team randomly assigned the system to be on or off each night, and, from a blind, they watched the behavior of flocks of cranes flying along the river for about five hours on test nights, from dusk to four and a half hours after sunset.They recorded any collisions with the approximately 15-meter-high (50-foot) power line, the birds’ flight behavior after a collision, and their reactions as they approached the power line. The observers also estimated the perpendicular distances with which cranes flying up the river reacted to the power line, with reactions within 25 meters (80 feet) of the line considered risky or dangerous.The observers considered reactions that resulted in the cranes passing over the power line at heights less than 25 meters as “dangerous” flights, even if no collision occurred.A surprisingly strong resultDuring the four-month study, they recorded 916 flocks of cranes passing the power lines and 49 collisions, only one of which occurred when the ACAS system was on. In addition to this 98 percent reduction in collisions, they also documented 82 percent fewer dangerous flights and quicker, more controlled reactions by the cranes to avoid hitting the power lines when the system was on.Hundreds of thousands of sandhill cranes stop along the Platte River in the midwestern U.S. to rest and refuel on their annual migrations. They often travel at night, so the ACAS system’s aim is to help cranes and other birds see power lines and other human structures in the dark, enabling them to safely reach their destinations. Image courtesy of James F. Dwyer/EDM International, Inc.“We think the birds could clearly see the line in the dark even though it was still invisible to us,” Dwyer said.In a statement, Dwyer said he was surprised at the strength of the findings. “I thought perhaps there could be a more effective approach” to reducing collisions, he said. “I thought it would have some effect, but I didn’t dare think the ACAS would pretty much solve the sandhill crane collision problem at our study site on our first try.”A greater sandhill crane reacts to a bald eagle approaching the crane’s chick hidden nearby. Sandhill cranes are large and will aggressively defend their young from potential predators. Image courtesy of Tom Koerner/USFWS.The ACAS developers want to expand their project to other locations and species. “Installation and monitoring is 100% replicable,” Dwyer said. “We need to do more studies with other species, habitats, line configurations, etc., to see if the results are replicable.“We are very interested in collaborating at other sites to conduct additional testing,” he added.The authors suggest in their paper that UV lights could also help to reduce collisions of large migratory birds with wind turbines, as well as keep smaller migrants far from buildings, towers, and other structures that become deadly at night. As power lines and wind turbines proliferate, the authors propose testing various configurations of lights to illuminate the most problematic parts of structures and to be sure the lights don’t affect behavior of insects or other wildlife.Citation:Dwyer, J. F., Pandey, A. K., McHale, L. A., & Harness, R. E. (2019). Near-ultraviolet light reduced sandhill crane collisions with a power line by 98%. The Condor: Ornithological Applications, 121(2). doi:10.1093/condor/duz008FEEDBACK: Use this form to send a message to the editor of this post. If you want to post a public comment, you can do that at the bottom of the page.center_img 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 overSponsoredlast_img read more

New monkey species found in Amazon forest area that’s fast disappearing

first_imgAnimals, Biodiversity, Conservation, Deforestation, Environment, Forests, Green, Hydroelectric Power, Mammals, Mining, Monkeys, New Species, Primates, Rainforests, Research, Species Discovery, Tropical Forests, Wildlife Article published by Shreya Dasgupta 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 From a stretch of the Amazon forest lying between the Tapajós and Jamanxim rivers in the Brazilian state of Pará, researchers have described a new-to-science species of marmoset.The marmoset, with its distinct white tail, white forearms with a beige-yellowish spot on the elbow, and white feet and hands, has been named Mico munduruku after the Munduruku, an indigenous group of people who live in the Tapajós–Jamanxim interfluve.At the moment, given the scarcity of information on M. munduruku, the researchers recommend listing the marmoset as data deficient on the IUCN Red List.However, the Amazon forest that’s home to the newly described species is being rapidly cut for agricultural expansion, logging, mining, and infrastructure development. From an area of southern Amazonia, where forests are rapidly being cut for gold mining, agriculture, cattle pastures, and construction of dams, researchers have described a species of marmoset that’s new to science.“The spread of deforestation is pretty visible,” said Rodrigo Costa Araújo of the National Institute of Amazonian Research, Brazil.Araújo and his colleagues had been surveying the stretch of Amazon forest lying between the Tapajós and Jamanxim rivers in the Brazilian state of Pará for primates when they first spotted the marmosets, they report in a recent study published in PeerJ.“The first time I recorded the new species was a very exciting moment!” Araújo, lead author of the study, said in an email. “I saw a small group of three marmosets in the border of the forest, before entering the trail so I was surprised with such a lucky encounter. Immediately I took my binoculars and my heart started to beat hard when I saw their white tails.”White tails are very rare among primates that live in South America; only one other primate species, Leontocebus melanoleucos, is known to have one, Araújo said. (Leontocebus melanoleucos is one of the synonyms for Leontocebus weddelli melanoleucus, commonly known as the white saddle-back tamairn.)So the tail was an indication that the marmoset could be a new species. To confirm this, Araújo and his colleagues trekked through the forests and canoed up streams, recording details of every individual marmoset or troop they observed. They also collected five specimens of the monkey as well as samples of their muscle tissue in the field under appropriate permits. They later analyzed the specimens to confirm that the marmoset species was indeed new to science.The marmoset, with its distinct white tail, beige-yellowish lower half, white forearms with a beige-yellowish spot on the elbow, and white feet and hands, has been named Mico munduruku after the Munduruku, an indigenous group of people who live in the Tapajós-Jamanxim interfluve.A boat on Tapajós River with a view of the forest where Mico munduruku is found. Image courtesy of Rodrigo Costa Araújo.The discovery of M. munduruku wasn’t entirely unexpected. Only a handful of primate and mammal surveys have been conducted in the region between the Tapajós and Jamanxim rivers, the researchers say, and no marmosets have ever been collected from there. The forests in the area are also largely isolated from the range of other similar species by the rivers, Araújo said.“These facts triggered the expeditions to the Tapajos-Jamanxim interfluve and, although finding new species is quite unpredictable, I had a strong sense that a distinct species could be found,” he said.Moreover, people living in the region, including those who spend time in the forests mining gold, had told the researchers about the species. “They are aware of the marmosets and were able to give accurate descriptions of the species — locally these marmosets are called as soins,” Araújo said.At the moment, given the scarcity of information on M. munduruku, the researchers recommend listing the marmoset as data deficient on the IUCN Red List.A sketch of Mico munduruku. Image by Stephen NashHowever, the Amazon forest that’s home to M. munduruku is under tremendous pressure. The forests are being rapidly cut for agricultural expansion and logging, and four hydroelectric power plants have been approved for construction there, Araújo said. Gold mining is also rampant.“The region is a hotspot for gold miners, so there is dredging and digging of the river bed and its tributaries,” Araújo said in a statement. “It is a little-studied region and the biodiversity there is poorly known. Having a new primate species described here clearly demonstrates that the habitat of still unknown species are being destroyed.”It’s a race against time, but the researchers plan to continue to survey southern Amazonia and collect more data on all the marmosets that occur in the region, so that effective conservation actions can be designed.Rodrigo Costa Araújo was part of the surveying team that described the new-to-science species of marmoset. Image courtesy of Rodrigo Costa Araújo.Citation:Costa-Araújo, R., de Melo, F. R., Canale, G. R., Hernández-Rangel, S. M., Messias, M. R., Rossi, R. V., … & Farias, I. P. (2019). The Munduruku marmoset: a new monkey species from southern Amazonia. PeerJ, 7, e7019. doi:10.7717/peerj.7019last_img read more

Arsenal, Chelsea told Zaha is ‘going nowhere’

first_imgTransfers Arsenal, Chelsea and Man City told Zaha is ‘going nowhere’ in January Jamie Smith 23:15 12/29/17 FacebookTwitterRedditcopy Comments(0) Wilfried Zaha Getty Images Transfers Arsenal Manchester City Chelsea Swansea City v Crystal Palace Crystal Palace Premier League The Ivory Coast international’s form has led to rumours he could leave Crystal Palace, but Roy Hodgson insists the forward will stay at Selhurst Park Crystal Palace manager Roy Hodgson has been given assurances that the club’s in-form forward Wilfried Zaha will not be sold in the January transfer window.Palace were beaten 3-2 at home by Arsenal on Thursday to end a run of eight Premier League games without defeat, leaving Hodgson’s men a point above the relegation zone.Zaha’s performances have played a key role in Palace’s resurgence under Hodgson, leading to the 25-year-old being linked to Manchester City, Arsenal and Chelsea. Article continues below Editors’ Picks Lyon treble & England heartbreak: The full story behind Lucy Bronze’s dramatic 2019 Liverpool v Man City is now the league’s biggest rivalry and the bitterness is growing Megan Rapinoe: Born & brilliant in the U.S.A. A Liverpool legend in the making: Behind Virgil van Dijk’s remarkable rise to world’s best player Hodgson indicated earlier this month that he could not guarantee Zaha’s future, but the former England manager has now been informed the Ivory Coast international will not be sold.”I have assurances from the club owners and chairman, Steve Parish, that [Zaha leaving] is not going to happen,” Hodgson told Palace’s official website.”We want to keep all the players we have got and ideally want to add to the squad in the January transfer window to strengthen even more.Crystal Palace Wilfried Zaha going nowhere“We are not too concerned about any rumours which might circulate because he is going nowhere.”Zaha’s four Premier League goals have helped Palace to move away from the bottom three, with Hodgson delighted with the player’s impact.”Wilfried has been absolutely excellent for us in this recent good run we have had and of course he is the iconic Crystal Palace player, having been with us for so many years and being a local hero,” Hodgson added.”He is doing everything he can to try and keep us out of the relegation zone and he is going to have to keep producing those type of performances for many more games because we have a long fight ahead of us.”last_img read more