SA’s 20th marine protected area

Posted in jetevarl on December 19th, 2019

first_img14 October 2008 According to Van Schalkwyk, the new Stilbaai MPA encompasses a variety of marine habitats, including a large sandy bay to the east, smaller rocky bays to the west and the mouth of the Goukou River in the centre of the area. In the marine area of approximately 12 square kilometres opposite the mouth, recreational fishing and some forms of commercial fishing, like traditional line-fishing but not trawling, are allowed. The new protected area will provide protection to a variety of marine and estuarine habitats, which in turn will assist in the recovery of populations of depleted fish and other endemic species. The remainder of the MPA compromises a controlled zone in which fishing will be allowed. In the estuarine part of the controlled zone, which stretches from the mouth to just upstream of the Olive Grove Dam, recreational fishing as well as bait collecting on the eastern bank will be allowed. “It is significant that the entire Goukou estuary lies within the MPA, as this will help provide urgent protection for the estuary,” Van Schalkwyk said. “As the MPA will encompass both estuarine and marine habitats, it will provide enhanced shelter for formerly abundant but now overexploited species like kob, which use both environments.” Environmental Affairs and Tourism Minister Marthinus van Schalkwyk this week promulgated the Stilbaai Marine Protected Area (MPA) in the Western Cape province, making it South Africa’s twentieth such protected area. Line-fishing for locals “These areas will assist in the recovery of populations of depleted fish species and their sustainable utilisation outside the restricted area,” Van Schalkwyk said. “Rare and endemic species and their habitat will also be protected in the sea and estuary.” “The declaration of a restricted zone will also allow specific protected sandy terrestrial and marine areas to join, thereby shielding the natural coastline more fully, which is important in the light of climate change and its resulting phenomena,” an Schalkwyk said in a statement this week. Van Schalkwyk said the Stilbaai MPA will offer complete protection from fishing and bait collection to approximately 75% of the Goukou estuary and 20 square kilometres of ocean in the Skulpiesbaai restricted zone in the west and the larger Geelkrans restricted zone in the east. The coastline also contains well-preserved stone fish traps (visvywers), which are considered to be living evidence of how the original coastal inhabitants historically fished the area. Variety of marine habitats The town of Stilbaai and its people still depend on having access to the sea and estuary and there is a proclaimed harbour utilised by both commercial and recreational fishers and recreational boaters. SAinfo reporterlast_img read more

On tour

Posted in qntkvqtv on December 19th, 2019

first_imgPatricia Trudes da Veiga – Brazil (Editor)Patrícia Trudes da Veiga, 47 years old, has been a journalist at Folha de S.Paulo (the best-selling Brazilian newspaper) since 1984, where she currently holds the post of editor of the Sunday supplements, in addition to editor of the Folhinha, the weekly children’s supplement. Since 2005, she has also been the editor responsible for the Social Entrepreneur Award, a partnership established between the Schwab Foundation and Folha de S.Paulo. This year, she is also the editor in charge of launching the Folha’s Promising Social Entrepreneur Award. Patrícia holds a degree in journalism from the Fundação Cásper Líbero, and a specialization degree in the Third Sector from the Fundação Getulio Vargas de S.Paulo (FGV-SP).Nagy Abdel Aziz – Egypt (Deputy Business Editor)Nagy Abdel Aziz writes for the Almasry Alyom Newspaper in Egypt. He’s main focus areas are topics on Energy, industry, stock market, commercial, investment and transport.Pei Guangjiang – China (Correspondent)Chief correspondent, People’s Daily South African Bureau. Graduated from Tsinghua University in 2006, and started career as professional journalist in the International News Department of People’s Daily the same year. Worked in South Africa since February 2009. Responsible for covering all Southern and eastern Africa countries.  Have written stories about South African general election and World Cup, AU Summits etc.People’s DailyWith publication started in June 1948 and a current circulation of over 2 million, People’s Daily is among the most influential newspapers in China. People’s Daily brings you the latest major domestic news and international news released from Beijing, China. It reflects the views of the Chinese people, and prints four pages of international news per day as well. Our international news covers from politics, economy to science and technology, culture and tourism.David Smith – UK (Senior Correspondent)David Smith is Africa correspondent of The Guardian newspaper in the UK. Since April 2009 he has reported on news, politics, culture and sport across the continent, with assignments so far including the South African general election, an interview with Zimbabwe Prime Minister Morgan Tsvangirai, the 2010 football World Cup and travels in Botswana, Cameroon, Democratic Republic of Congo, Lesotho, Madagascar, Mozambique, Tanzania and Zambia.David, 35, was born in Salford in the UK and studied at Nailsea School and Leeds University, where he edited Leeds Student newspaper. He went on to join the Daily Express in 1997 and The Observer in 2003, working as a general news reporter and covering the conflicts in Afghanistan and Iraq. He enjoys film and theatre and supports Wolverhampton Wanderers Football Club. His lives with his wife, Andrea, in Johannesburg.Yingni Lu – UK (Correspondent) Professional experience: Experienced in strategy and business development, with a unique skills set that combines a B.Eng in Environmental Engineering from Tsinghua University, an MBA from Imperial College, solid professional experience in cleantech and energy sector in the UK and China.  Previously have provided industrial consultancy on Beijing technology need in renewable energy and resources during the period of “11th Five-Year Plan” (2006) and strategic consultancy for one of the business units in EDF Energy (2010).  I am currently doing cleantech research at ICUK, evaluating emerging clean technologies in the UK to identify potential candidates to advise and to connect them to both business and financial partners for expansion to China. Yingni Lu is will be coming through as reporter for ReConnect Africa magazine during this trip. Sue Cullinan – Paris (Editor)Sue Cullinan is a writer and editor for The Africa Report magazine, published in Paris by Groupe Jeune Afrique. A journalist for nearly 30 years, Sue has also worked for the Guardian and Time magazine, New York Times Travel and Leisure and NBC News (US). In Paris, Sue covers South African politics and economics for The Africa Report as well as for Africa Confidential in London. Africa Report is planning a special issue on South Africa in March-April 2011.Miriam Mannak – Netherlands (Journalist)Born in The Netherlands and bred in Angola and Rwanda, Miriam Mannak (1977) is a journalist and photographer based in Cape Town. She writes about different topics, including business and finance, health, social development, politics, environmental issues and travel. Besides being the foreign correspondent at the Dutch equivalent to the Financial Times (Het Financieele Dagblad), she is a regular contributor to Leadership Magazine, Black Business Quarterly, Leadership in HIV, I-Net Bridge, both in-flight magazines of Emirates, and other publications. She holds university degrees in Journalism, American Politics and International Development Studies and moved to South Africa in 2004 as part of a Dutch media programme. From September 2004 until April 2005 she worked as a general reporter at the Cape Times. After realising how much South Africa had to offer, she decided to stay and to make South Africa her home. In 2009, she was awarded a fellowship by the International Aids Society (AIS) and the National Press Foundation in Washington, the US.Currently, Miriam is the Vice Chair of the Western Cape branch of the Southern African Freelancers’ Association (Safrea); South Africa’s main platform for freelance media professionals.Evgenia Pertzova  – Russia (correspondent)Evgenia is graduated from Moscow State University on Journalist department. She has been working as a journalists for more then 5 years. She used to work for online business portal before she joined RBC media group. Her main specialization is food retal + b-2-b communications.Alex Kokcharov – Russia (Correspondent)Born in 1976 in Belarus.  Alex studied Geography and Economics at the universities in Minsk (Belarus), Bochum (Germany), Moscow (Russia) and Oxford (UK). Started a career in business journalism during his student years and joined Expert in 1998. Since 2003 he is the London Correspondent of Expert magazine.  Alex covers primarily business, finance, economy and energy – authored over 300 feature stories, primarily with international focus (including several on Africa). In January 2008 he was awarded a prize by the Russian Media Union for the best business story in the Russian media in 2007 for a story on the competition between financial centres of London and NYC.Evgeny Pavelko – Russia (Correspondent) ROSSIYSKAYA GAZETADaily newspaper of the Russian Government, nationwide,circulation 200000 copies a dayEvgeny Pavelko, born 21.12.1957.Executive Director on International Projects and Advertising.Since 1983 worked like as a correspondent of RIA Novosti agency, Moscow news weekly, creative director of advertising IMA-press agency, editor of international department Izvestia daily newspaper. Working foreign languages – French, English.Specialized on international policy and economy, responsible for foreign supplements and pages in the daily newspaper of the Russian Government – “Rossiyskaya Gazeta”Andreev Alexey – Russia (Editor)Starting from 1996 – writer for “”Asia and Africa today”1997-2003 -worked at Independent Newspaper as international politics observer 2005 – Editor of the foreign policy in New Izvestia newspaper, KOL for BBC (radio) in Asia and Africa.James Lawrence – UK Lifestyle journalistJames Lawrence is a freelance lifestyle journalist and self confessed wine, travel and food obsessive, passionate about discovering and promoting the lesser known wines and wine regions of the world. He is a frequent contributor to decanter.com, Harpers Wine and Spirits, The Guardian online, QS magazine and runs an interactive, community led wine forum, thewineremedy.com.James also co-owns a media production company, called Wine Spotlight. A major project for them next year will be to produce a film, or mini-documentary celebrating South African tourism and culture through its wine industry. He is very excited about his first trip to South Africa, hopefully the first of many.last_img read more

#Nextchat RECAP: Building Diverse Talent Communities

Posted in qntkvqtv on December 18th, 2019

first_imgOn March 6, @shrmnextchat chatted with PowertoFly’s President and Co-Founder Katharine Zaleski @kzaleski about Building Diverse Talent Communities.If you missed this excellent #Nextchat filled with great tips and advice, you can read all the tweets here or below:last_img

GIS vs. Mother Nature

Posted in dnxjvxyy on December 9th, 2019

first_imgNew England is famous for three things: Competitive sports teams. Trees. And wicked bad weather (note the regional slang). The weather gets particularly bad during winter, from snow and moisture content.When I ran electric operations for a New England power company in this challenging environment, there was some good news: I employed the most hardworking, dedicated crews.The bad news was, like our Patriots, they were incredibly competitive.Why is being competitive bad news? Well, the utility company was organized by district: north, south, central, and so on. During big storms, each district would battle to see who could restore customer power the fastest. The problem was, each district hoarded its crews. So while the north district served small service drop jobs, the south struggled to repair main lines. A lot more people went without power in the south than the north.The power company could have done much more if we had known the types of work going on in each district. I could have immediately dispatched crews, for instance, from the north to south to optimize restoration to the most customers across the company. But because I didn’t have a solid situational awareness of the full restoration effort, I couldn’t. I knew the number of outages, jobs, and crews assigned. But there was no overall picture to determine the overall restoration-effort impact.Yes, my crews were competitive. That was noble. But that wasn’t enough to provide optimal restoration for the whole company.Getting Good Damage AssessmentI was in charge of power restoration, but the trick was getting a good assessment of the damage Mother Nature had caused. Since trees were absolutely everywhere, you never knew if a power failure traced back to one tree that had fallen onto a circuit or 100 trees that had taken out multiple parts of the circuit. We needed rapid, holistic damage assessment to determine how many jobs our crews had to do to fix and how long those jobs would take – in other words, how long it would take to get everyone’s lights back on.What I needed was the ArcGIS platform, but back then it didn’t exist. Now it does, and the platform lets utilities see the entire restoration effort, from beginning to end.With the platform, I would have been able to speed up the damage assessment. Back in those days – and today for many utilities – damage assessment is a slow, manual, and arduous process. It often starts with lots of people and lots forms. They traipse through the snow with pencils and paper maps. In our case, they would spend several hours gathering all this damage-assessment information. Then they would head back to our service centers, where staff organized forms and input the information into spreadsheets. The next step was trying to make sense of the data.It doesn’t need to be so hard anymore. With the ArcGIS platform, field workers today can – and are – gathering damage data on mobile devices with photos, notes, and preconfigured data drop-downs. The devices immediately transmit this information to utilities’ Emergency Operations Centers, where an executive dashboard shows in real-time all damage occurrences. Dispatchers can immediately make geographically strong crew-staffing decisions.With this, I could have ended the battle between the north and south while getting customers’ power on faster. The immediate access to visualized situational awareness would have shown where we didn’t have enough crews in the south at the very start of our damage assessment, rather than three quarters of the way through the process.The platform serves as an early information system. Utilities can see if they have enough crews to handle the outage and if those crews are in the right spots. You can use it to arrange the right number of contract crews or foreign crews from neighboring utilities right away, rather than too late. You can visualize the impact of your restoration effort in a much more dynamic way. You can even incorporate data from your Outage Management System (OMS), Automated Vehicle Locator (AVL), and SCADA system. This gives you real-time views of the situation at every step.The Calm after the Storm Restoration involves more than just getting crews out into the field and cutting away dangled wires from downed trees. It involves communication, collaboration and information sharing. This applies to first responders, shelters, politicians, media, and frenzied customers.It also involves accessing a constant stream of information about flooding, blocked streets, bridges out, traffic, and hazardous situations. I would routinely be on the phone during and after a storm, madly writing information from police and fire officials about the situation on the ground.With the platform, that information streams into my GIS dashboard right now.What better way to share storm-situation information than with a map? Perhaps the only thing better is a data-driven map with all your critical information. The ArcGIS platform provides that.That’s why modern GIS as a platform is critical for utilities. This is what it does best. It brings disparate information together so you can make decisions – decisions that lower costs, get the lights on faster, and inform people to do their jobs as fast as possible.The competition isn’t to see which district can get customer power on faster. The real tame is to get all the lights on as fast as possible.Learn how the ArcGIS platform improves your storm response at esri.com/storm.last_img read more

Test blasts simulate a nuclear attack on a U.S. port

Posted in bacbbpks on December 1st, 2019

first_img Test blasts simulate a nuclear attack on a U.S. port By Richard StoneFeb. 28, 2017 , 5:00 PM This detonation at Aberdeen Proving Ground last October simulated the effects of a nuclear blast in a ship’s hull. Aberdeen Proving Ground Under cover of night, a blacked-out fishing boat slips into Baltimore, Maryland’s Inner Harbor. A U.S. Coast Guard cutter moves to apprehend the intruder. But before officers can board, both boats and much of Baltimore disappear in an intense flash: A nuclear bomb hidden on the boat has detonated. As first responders rush to victims, nuclear forensics specialists scrutinize data on radiation and acoustic and seismic waves from sensors placed around the city in a breakneck effort to decipher the bomb’s design and perhaps determine who was behind the blast.At a time when a bomb smuggled by terrorists is as big a concern as one from a foreign power, delivered by missile or airplane, an attack at a port is “definitely a more likely scenario,” says Thomas Cartledge, a nuclear engineer with the U.S. Defense Threat Reduction Agency (DTRA) in Fort Belvoir, Virginia. But forensic experts, who rely largely on nuclear test data collected years ago in Western deserts, lack a clear picture of how energy from a detonation would propagate in the highly saturated geology of many U.S. port cities. To remedy that, DTRA last October quietly staged Humming Terrapin: a 2-week test series at the Aberdeen Proving Ground in Maryland that detonated nearly 2 metric tons of conventional explosives to simulate nuclear blast effects in shallow water.Since the 9/11 attacks, the U.S. government has mounted a major effort to prevent a nuclear bomb from being smuggled into a port. It has outfitted points of entry with radiation detectors, and it is working with foreign ports toward a goal of having all U.S.-bound cargo scanned for nuclear materials before departure. But it’s well nigh impossible to track the myriad small craft flitting in and out of the 361 U.S. ports and 153,000 kilometers of open shoreline. “There are a zillion fishing boats that leave U.S. ports and nobody inspects them when they come home,” says Matthew Bunn, a specialist on nuclear terrorism at Harvard University’s Belfer Center for Science and International Affairs. “If there is highly enriched uranium metal that’s shielded and below the water line, it’s going to be really tough to detect at long range.”Sign up for our daily newsletterGet more great content like this delivered right to you!Country *AfghanistanAland IslandsAlbaniaAlgeriaAndorraAngolaAnguillaAntarcticaAntigua and BarbudaArgentinaArmeniaArubaAustraliaAustriaAzerbaijanBahamasBahrainBangladeshBarbadosBelarusBelgiumBelizeBeninBermudaBhutanBolivia, Plurinational State ofBonaire, Sint Eustatius and SabaBosnia and HerzegovinaBotswanaBouvet IslandBrazilBritish Indian Ocean TerritoryBrunei DarussalamBulgariaBurkina FasoBurundiCambodiaCameroonCanadaCape VerdeCayman IslandsCentral African RepublicChadChileChinaChristmas IslandCocos (Keeling) IslandsColombiaComorosCongoCongo, The Democratic Republic of theCook IslandsCosta RicaCote D’IvoireCroatiaCubaCuraçaoCyprusCzech RepublicDenmarkDjiboutiDominicaDominican RepublicEcuadorEgyptEl SalvadorEquatorial GuineaEritreaEstoniaEthiopiaFalkland Islands (Malvinas)Faroe IslandsFijiFinlandFranceFrench GuianaFrench PolynesiaFrench Southern TerritoriesGabonGambiaGeorgiaGermanyGhanaGibraltarGreeceGreenlandGrenadaGuadeloupeGuatemalaGuernseyGuineaGuinea-BissauGuyanaHaitiHeard Island and Mcdonald IslandsHoly See (Vatican City State)HondurasHong KongHungaryIcelandIndiaIndonesiaIran, Islamic Republic ofIraqIrelandIsle of ManIsraelItalyJamaicaJapanJerseyJordanKazakhstanKenyaKiribatiKorea, Democratic People’s Republic ofKorea, Republic ofKuwaitKyrgyzstanLao People’s Democratic RepublicLatviaLebanonLesothoLiberiaLibyan Arab JamahiriyaLiechtensteinLithuaniaLuxembourgMacaoMacedonia, The Former Yugoslav Republic ofMadagascarMalawiMalaysiaMaldivesMaliMaltaMartiniqueMauritaniaMauritiusMayotteMexicoMoldova, Republic ofMonacoMongoliaMontenegroMontserratMoroccoMozambiqueMyanmarNamibiaNauruNepalNetherlandsNew CaledoniaNew ZealandNicaraguaNigerNigeriaNiueNorfolk IslandNorwayOmanPakistanPalestinianPanamaPapua New GuineaParaguayPeruPhilippinesPitcairnPolandPortugalQatarReunionRomaniaRussian FederationRWANDASaint Barthélemy Saint Helena, Ascension and Tristan da CunhaSaint Kitts and NevisSaint LuciaSaint Martin (French part)Saint Pierre and MiquelonSaint Vincent and the GrenadinesSamoaSan MarinoSao Tome and PrincipeSaudi ArabiaSenegalSerbiaSeychellesSierra LeoneSingaporeSint Maarten (Dutch part)SlovakiaSloveniaSolomon IslandsSomaliaSouth AfricaSouth Georgia and the South Sandwich IslandsSouth SudanSpainSri LankaSudanSurinameSvalbard and Jan MayenSwazilandSwedenSwitzerlandSyrian Arab RepublicTaiwanTajikistanTanzania, United Republic ofThailandTimor-LesteTogoTokelauTongaTrinidad and TobagoTunisiaTurkeyTurkmenistanTurks and Caicos IslandsTuvaluUgandaUkraineUnited Arab EmiratesUnited KingdomUnited StatesUruguayUzbekistanVanuatuVenezuela, Bolivarian Republic ofVietnamVirgin Islands, BritishWallis and FutunaWestern SaharaYemenZambiaZimbabweI also wish to receive emails from AAAS/Science and Science advertisers, including information on products, services and special offers which may include but are not limited to news, careers information & upcoming events.Required fields are included by an asterisk(*)In case the unthinkable happens, a sensor array called Discreet Oculus that is being installed in major U.S. cities would capture key forensic information. The array, which DTRA is still developing, would record radiation and seismic waves emanating from the blast. “Discreet Oculus is up and running in several U.S. cities now,” Cartledge says. A sister system—a portable array that runs on battery or solar power called Minikin Echo—will be deployed at major events such as the Olympics or the Super Bowl. Data from Cold War–era nuclear testing and simulations are being used to calibrate the sensors.Yet past U.S. testing is a poor proxy for detonations at a port, says Tamara VanHoose, a U.S. Army major and nuclear engineer at DTRA. A closer analog is a little-known campaign in 1963–64 in which the U.S. Air Force conducted a series of detonations of as much as 10 tons of chemical explosives at the bottom of Lake Superior. The tests offered a wealth of data on how seismic waves traverse the land-water interface, but they “were not instrumented to meet our needs,” VanHoose says.Humming Terrapin aims to fill that gap. VanHoose and colleagues set up Discreet Oculus and two Minikin Echo arrays at Aberdeen, adding hydrophones, which are not currently included in either array. Another set of sensors probed how seismic signals ripple through East Coast rock layers. “These are wet-type geologies versus the granite geologies that we see out at the typical desert sites where we’ve done historic testing,” VanHoose says.The team set out to test several scenarios. “We were looking at how a weapon might be delivered,” Cartledge says. A detonation above the water line—say in a container on the deck of a cargo ship—would produce a mostly acoustic signal, he says, whereas a detonation in a ship’s hull, below the surface, would be mostly seismic. “Really challenging,” he says, is the seismo-acoustic coupling “right at the surface”—a scenario one might expect for a detonation aboard a smaller boat.Finally came the big bangs. Working with U.S. Navy hydrosound experts, the DTRA-led team detonated eight 175-kilogram TNT explosions at Aberdeen’s Briar Point Test Pond, as well as one 455-kilogram TNT explosion at a nearby underwater explosives facility. The team sheltered in a bunker about 450 meters away and watched the explosions on closed-circuit TV.Less than a second after a detonation, the seismic waves arrived. The bunker “really rocks,” Cartledge says. “Wow, you don’t think it would shake us much as it does. That’s the fun part of the job.” A moment later came the airborne shock wave: “a very intense bang,” recalls Mark Leidig, a seismologist at Weston Geophysical Corp., a consulting firm in Lexington, Massachusetts, that designed the tests.Now comes the hard work of sifting the data and “building our models to account for the coupling effects of the water we observed,” VanHoose says.DTRA will stage its next test series back on dry land at the White Sands Missile Range in New Mexico, where an unshielded “fast-burst” nuclear reactor is normally used to test how military hardware might withstand a nuke’s high-energy neutron barrage. In June the DTRA team will verify that the speed-of-light sensors it is developing—detectors for gamma rays, radio waves, and light—can capture and model the fast burst, or the exponential rise of the nuclear reaction going critical. Such data provide “valuable forensic insight into weapon characteristics,” Cartledge says. Revealing a weapon’s design would speed the government’s response to a once-unimaginable act of terrorism, wherever it took place.last_img read more

Baltimore Police are Called to Help a 16yearold Black Male Being Attacked

Posted in alaojwmw on September 1st, 2019

first_imgCops in Baltimore, Maryland have beaten up and arrested 16 year old Alonzo Cox on Wednesday night. Cox  was being threatened by 14 year old female with a knife when police arrived. Police officers involved didn’t even try to deescalate when they arrived and immediately started to attack the victim.(Screengrab from video)In a video (below) cops are trying to take 16-year-old Alonzo Cox into custody. Just before that the teen was threatened with a knife by a 14 year old female. Why the cops wanted to arrest the victim is not clear. In the beginning of the video a female cop can be seen throwing handcuffs to the ground almost immediately. Shortly after a male cop can be heard threatening to punch the teen. An eyewitness than says “Why are you hitting him?” The video also shows that Alonzo tried to protect his head.   More…last_img read more

Understanding reef systems at the genetic level

Posted in yemiwbag on August 31st, 2019

first_img More information: “The genome of Aiptasia, a sea anemone model for coral symbiosis.” PNAS 2015 ; published ahead of print August 31, 2015, DOI: 10.1073/pnas.1513318112AbstractThe most diverse marine ecosystems, coral reefs, depend upon a functional symbiosis between a cnidarian animal host (the coral) and intracellular photosynthetic dinoflagellate algae. The molecular and cellular mechanisms underlying this endosymbiosis are not well understood, in part because of the difficulties of experimental work with corals. The small sea anemone Aiptasia provides a tractable laboratory model for investigating these mechanisms. Here we report on the assembly and analysis of the Aiptasia genome, which will provide a foundation for future studies and has revealed several features that may be key to understanding the evolution and function of the endosymbiosis. These features include genomic rearrangements and taxonomically restricted genes that may be functionally related to the symbiosis, aspects of host dependence on alga-derived nutrients, a novel and expanded cnidarian-specific family of putative pattern-recognition receptors that might be involved in the animal–algal interactions, and extensive lineage-specific horizontal gene transfer. Extensive integration of genes of prokaryotic origin, including genes for antimicrobial peptides, presumably reflects an intimate association of the animal–algal pair also with its prokaryotic microbiome. This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. Citation: Understanding reef systems at the genetic level (2015, September 8) retrieved 18 August 2019 from https://phys.org/news/2015-09-reef-genetic.html Researchers have been seeking an experimentally versatile model of the cellular biology underlying this symbiosis, which could be a key to understanding the adaptability and resilience of reef systems. An international group of researchers now reports in the Proceedings of the National Academy of Sciences on a genetic study of the sea anemone Aiptasia, a globally distributed species that harbors Symbiodinium, the most widespread known group of endosymbiotic dinoflagellates, which inhabit many species and are common to cnidarians that occupy nutrient-poor waters.The host provides the algae with a sheltered environment and the nutrients necessary for photosynthesis and growth; in return, Symbiodinium supplies over 90 percent of the cnidarian’s total energy. The reasons this holobiont provides an attractive model system for reef studies include polyp sizes convenient for experimentation, and its easy production in a laboratory environment, where it can reproduce asexually, yielding large clonal populations. It can also be maintained indefinitely in an aposymbiotic state (without its endosymbiote) and reinfected with a variety of Symbiodium strains.The researchers sequenced the DNA from Aiptasia anemones and produced a reference transcriptome, which was sequenced using RNA derived from different developmental and symbiotic states. They uncovered a number of previously unknown genetic features of Aiptasia, but more importantly, the study provides a foundation for understanding the evolution and function of the symbiosis between the two organisms. Among their discoveries, the researchers found a novel cnidarian-specific family of putative pattern-recognition receptors that may be involved in the symbiotic relationship. Cnidarian hosts must necessarily distinguish among potential symbionts, and most can establish relationships with some strains of Symbiodinium but not with others. “Such discriminations must be accomplished in the absence of an adaptive immune system and presumably depend on innate immunity mechanisms that involve the recognition of microbial cell-surface molecules by host pattern-recognition receptors,” the authors write. The study’s findings support the hypothesis that invertebrate pattern-recognition capabilities are more flexible than previously assumed.They also document evidence for horizontal gene transfer (HGT) between the hosts and the symbiotic dinoflagellates. Given that the associations between the two organisms have evolved over millions of years, HGT is extremely likely to have occurred. The researchers found 275 HGT candidate genes specific to Aiptasia, plus another 548 candidates believed to have been transferred from a nonmetazoan source to a basal cnidarian in the evolutionary past and shared among a large number of cnidarians. The researchers conclude that the variety of conserved features found in their analysis should help to illuminate the evolution of many kinds of symbiotic anthozoans, not just Aiptasia-Symbiodinium holobionts, thus enhancing knowledge of reef systems, among the most important marine ecosystems. Journal information: Proceedings of the National Academy of Sciences (Phys.org)—Coral reefs are the most diverse marine ecosystems, biodiversity hotspots now under anthropogenic threat from climate change, ocean acidification and pollution. Efforts are underway to protect and expand shrinking reef systems, but such endeavors are inhibited by the lack of information about such fundamental features as the functional symbiosis between the cnidarian coral animal and the photosynthetic alga that live in its gastrodermal cells.center_img © 2015 Phys.org Aiptasia sp. Credit: Wikipedia/CC BY-SA 3.0 Caribbean coral findings may influence Barrier Reef studies Explore furtherlast_img read more

78yearold iconic Elite Cinema of Kolkata closed forever

Posted in uecgexfa on August 31st, 2019

first_imgKolkata: Once owned by 20th Century Fox, the iconic Elite Cinema here has joined the list of single screens dropping curtains forever, unable to cope with competition in an era of multiplexes and the internet. The 78-year old auditorium in central Kolkata ended its journey with a notice pasted at the entrance that announced “permanent and irrevocable closure” with effect from June 1.Manager Shambhukumar Batabyal admitted that the owners have been incurring huge losses. Also Read – Heavy rain hits traffic, flights”We have 1,228 seats…. the average of seat occupancy throughout the year is just 1-2 per cent, which makes it difficult for us to run it,” he said. An IANS correspondent on Wednesday found the gates of Elite Cinema locked with none of its employees seen in the vicinity.Located in the bustling Dharamsala area, the hall till a few years back was a popular draw among the youth as also families. It boasts of an enviable guest list including the likes of Raj Kapoor, Amitabh Bachchan and Shahrukh Khan. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedWith the advent of multiplexes and fast internet, Elite cinema, like most other single screens, had lost its sheen.”It pulled huge crowds in the past, but the struggle began since last five years. Everyone now visits a multiplex in a mall or streams videos on their mobile,” said Tarachand, the owner of an adjoining betel shop running for almost 60 years.Elite Cinema was opened on August 2, 1940 and was thronged by the ‘elite’ of erstwhile Calcutta, but on May 31 it ended its last show silently owing to the lack of audience. The notice mentions that the management is unable to run the theatre due to heavy losses and debts. All the terminated employees have been asked to collect all their legal dues.Elite Cinema was once owned by 20th Century Fox and famous photographic studio Bourne & Shepherd. Classics like “Gone with the Wind”, “Sound of Music” and “My Fair Lady” had been screened here successfully for the audience.Old timers still recall the mammoth queues during the screening of Amitabh Bachchan-starrer “Shahenshah”.The cinema hall also had a bar attached which managed to attract a few footfalls. It was also closed in the month of March.”The bar still managed to bring some business but with its closure on March 31, that also started diminishing,” said the betel shop owner.Previously, many other halls in the city have ended their show. Metro, Grace, Ujjwala, Orient, Purna have become a part of history.last_img read more

History comes alive

Posted in puxsprkw on August 31st, 2019

first_imgFinale of 125th Foundation Year Celebrations of National Archives of India (NAI), organised by Ministry of Culture had commenced on March 7, in the national Capital. The celebrations, which will go on for a week, will culminate on March 11.N K Sinha, Secretary, Ministry of Culture inaugurated an Archival exhibition titled ‘Independent India: A Forward March (based on post Independence Public Records)’ in the premises of National Archives of India. Also Read – ‘Playing Jojo was emotionally exhausting’A two-day seminar on the ‘Sources of 18th and 19th Century’ is also being held from March 8-9 in the Conference Hall, NAI, Janpath.On the eve of ‘National Archives of India Foundation Day 2016’ on March 10, Prof. Surendra Gopal, an eminent historian will deliver the Foundation Day lecture on ‘Some Foreign Archives and India’s History’ in the auditorium of Nehru Memorial Museum and Library. The Finale of 125th Foundation Year would be culminated by following programmes in the presence of Dr Mahesh Sharma, Minister of State (I/C) for Culture and Tourism and Minister of State for Civil Aviation on March 11 in the auditorium of Nehru Memorial Museum and Library, Teen Murti Bhawan.Apart from this, a cultural programme, ‘Char Bait’ by the artists from Bhopal and Rampur Gharana, will also be organised in the lawns of National Archives of India on March 11.last_img read more