After a moment of silence on the White House’s South Lawn at 8:40 a.m. Eastern Time, both will travel to Arlington to the National 9/11 Pentagon Memorial. At 9:30 a.m., the President and the First Lady will participate in the September 11th Pentagon Observance Ceremony. Today is the 18th anniversary of the 9-11 terror attacks that killed three thousand Americans in New York’s World Trade Center, the Pentagon in the Washington DC as well as a hijacked plane crash in Pennsylvania. George W. Bush will be at the Pentagon today to commemorate the solemn day. The former president will attend a wreath-laying ceremony this afternoon at the site where terrorists flew a hijacked airliner into the Pentagon on September 11, 2001. Bush was commander in chief at the time of the attacks. While, he was president, U.S. forces moved into Afghanistan on October 7th, 2011 to oust the Taliban for giving safe haven to 9/11 mastermind Osama bin Laden. Ceremonies will also be held in New York City where two hijacked planes flew into the World Trade Center, and in Shanksville, Pennsylvania, where a hijacked plane crashed after its passengers fought with the hijackers. President Trump and First Lady Melania Trump will be making a visit to Arlington, Virginia to remember the lives lost in the September 11th attacks. pic.twitter.com/WqBj8iMQhx— Donald J. Trump (@realDonaldTrump) September 11, 2019
The devil is in the detail: small-scale sexual segregation despite large-scale spatial overlap in the wandering albatross
Sexual segregation in foraging habitat occurs in many marine predators and is usually attributed to competitive exclusion, different parental roles of each sex or niche specialisation associated with sexual size dimorphism. However, relatively few studies have attempted to understand the patterns and underlying drivers of local-scale sexual segregation in marine predators. We studied habitat use, diet and feeding ecology of female and male wandering albatrosses Diomedea exulans, fitted with GPS and stomach-temperature loggers during the chick-rearing period (austral winter) at South Georgia in 2009. During this period, when oceanographic conditions were anomalous and prey availability was low in waters near the breeding colony, the tracked wandering albatrosses showed high consistency in their foraging areas at a large spatial scale, and both males and females targeted sub-Antarctic and subtropical waters. Despite consistency in large-scale habitat use, males and females showed different foraging behaviours in response to oceanographic conditions at a smaller scale. Males appeared to be more opportunistic, scavenging for offal or non-target fish discarded by fishing vessels in less productive, oceanic waters. They exhibited sinuous movements, feeding mostly on large prey and consuming similar amounts of food during the outbound and return parts of the foraging trip. In contrast, females targeted natural productivity hotspots, and fed on a wide variety of fish and cephalopods. They commuted directly to these areas; most prey were ingested on the outbound part of the trip, and they often started their return after ingesting large prey at the farthest point from the colony. Together, these results indicate that sexual segregation in core foraging areas of wandering albatrosses is driven by sex-specific habitat selection due to the low availability of prey in local Antarctic waters. This segregation results in different feeding behaviour at local scales which may be explained by differing breeding roles and degree of parental investment by each sex, with females investing more than males in reproduction. Further investigations are necessary to confirm the existence of this pattern through time under contrasting environmental conditions and to identify the drivers responsible for local-scale sexual segregation in wandering albatrosses.