The Sahel forms a belt up to 1,000 km wide, spanning Africa from the Atlantic Ocean to the Red Sea.

The Sahel is the ecoclimatic and biogeographic zone of transition between the Sahara desert in the North and the Sudanian Savannas in the south. It stretches across the north of the African continent between the Atlantic Ocean and the Red Sea. The Arabic word sāḥil ساحل literally means "shore, coast", describing the appearance of the vegetation of the Sahel as a coastline delimiting the sand of the Sahara.

The Sahel covers parts of the territory of (from west to east) Senegal, southern Mauritania, Mali, Burkina Faso, southern Algeria, Niger, northern Nigeria, Chad, northern Cameroon, Sudan (including Darfur and the southern part of Sudan), and Eritrea. It is bordered on the north by the Sahara and on the south by the less arid savannah.

Geography[link]

Camels trample the soil in the semiarid Sahel as they move to water holes such as this one in Chad.

The lush green of the rainy season Sahelian forest, along the Bamako-Kayes Road in Mali. The trees in foreground are Acacia. Note the large Baobab tree.

Sahel people with livestock and azawakh dogs

The Sahel is 5,400 km (3,400 mi) from the Atlantic Ocean in the west to the Red Sea in the east, in a belt that varies from several hundred to a thousand kilometers (620 miles) in width, covering an area of 3,053,200 square kilometers (1,178,800 sq mi). It is a transitional ecoregion of semi-arid grasslands, savannas, steppes, and thorn shrublands lying between the wooded Sudanian savanna to the south and the Sahara to the north.^[1]

The topography of the Sahel is mainly flat, and the region mostly lies between 200 and 400 meters elevation. Several isolated plateaus and mountain ranges rise from the Sahel, but are designated as separate ecoregions because their flora and fauna are distinct from the surrounding lowlands. Annual rainfall varies from around 200 mm in the north of the Sahel to around 600 mm in the south.^[1]

Over the history of Africa the region has been home to some of the most advanced kingdoms benefiting from trade across the desert. Collectively these states are known as the Sahelian kingdoms.

Flora and fauna[link]

The Sahel is mostly covered in grassland and savanna, with areas of woodland and shrubland. Grass cover is fairly continuous across the region, dominated by annual grass species such as Cenchrus biflorus, Schoenefeldia gracilis, and Aristida stipoides. Species of Acacia are the dominant trees, with Acacia tortilis the most common, along with Acacia senegal and Acacia laeta. Other tree species include Commiphora africana, Balanites aegyptiaca, Faidherbia albida, and Boscia senegalensis. In the northern part of the Sahel, areas of desert shrub, including Panicum turgidum and Aristida sieberana, alternate with areas of grassland and savanna. During the long dry season, many trees lose their leaves, and the predominantly annual grasses die.

The Sahel was formerly home to large populations of grazing mammals, including the Scimitar-horned Oryx (Oryx dammah), Dama Gazelle (Gazella dama), Dorcas Gazelle (Gazella dorcas) and Red-fronted Gazelle (Gazella rufifrons), and Bubal Hartebeest (Alcelaphus busephalus buselaphus), along with large predators like the African Wild Dog (Lycaon pictus), Cheetah (Acinonyx jubatus), and Lion (Panthera leo). The larger species have been greatly reduced in number by over-hunting and competition with livestock, and several species are vulnerable (Dorcas Gazelle and Red-fronted Gazelle), endangered (Dama Gazelle, African Wild Dog, cheetah, lion), or extinct (the Scimitar-horned Oryx is probably extinct in the wild, and the Bubal Hartebeest is extinct).

The seasonal wetlands of the Sahel are important for migratory birds moving within Africa and on the African-Eurasian flyways.^[1]

History[link]

Early agriculture[link]

The first instances of domestication of plants for agricultural purposes in Africa occurred in the Sahel region circa 5000 BC, when sorghum and African rice began to be cultivated^{[citation needed]}. Around this time, and in the same region, the small Guineafowl were domesticated.

Around 4000 BC the climate of the Sahara and the Sahel started to become drier at an exceedingly fast pace. This climate change caused lakes and rivers to shrink rather significantly and caused increasing desertification. This, in turn, decreased the amount of land conducive to settlements and helped to cause migrations of farming communities to the more humid climate of West Africa.^[2]

Sahelian kingdoms[link]

The Sahelian kingdoms were a series of monarchies centered in the Sahel, between the 9th and 18th centuries. Their wealth of the states came from controlling the Trans-Saharan trade routes across the desert, especially the slave trade with the Islamic world. Their power came from having large pack animals like camels and horses that were fast enough to keep a large empire under central control and were also useful in battle. All of these empires were also quite decentralized with member cities having a great deal of autonomy. The first large Sahelian kingdoms emerged after 750, and supported several large trading cities in the Niger Bend region, including Timbuktu, Gao, and Djenné.

The Sahel states were limited from expanding south into the forest zone of the Ashanti and Yoruba as mounted warriors were all but useless in the forests and the horses and camels could not survive the heat and diseases of the region.

Colonial period[link]

The western Sahel fell to France in the late 19th century, as part of French West Africa. Chad was added in 1900 as part of French Equatorial Africa. The French territories were decolonialized in 1960.

The eastern Sahel (the part in what is now Sudan) did not fall to the European powers but was annexed by Muhammad Ali of Egypt in 1820. It came under British administration as part of the Sultanate of Egypt in 1914. The Sudanese Sahel became part of independent Sudan in 1956 and entered a lasting period of political instability and warfare, still ongoing in the War in Darfur.

The extreme east of the Sahel came under Italian control as Italian Eritrea in 1890. Eritrea was annexed by Haile Selassie of Ethiopia in 1962, and became independent in 1993 after a long War of Independence.

Recent droughts[link]

There was a major drought in the Sahel in 1914, caused by annual rains far below average, that caused a large-scale famine. The 1960s saw a large increase in rainfall in the region, making the northern drier region more accessible. There was a push, supported by governments, for people to move northwards. As the long drought-period from 1968 through 1974 began, the grazing quickly became unsustainable, and large-scale denuding of the terrain followed. Like the drought in 1914, this led to a large-scale famine, but this time it was somewhat tempered by international visibility and an outpouring of aid. This catastrophe led to the founding of the International Fund for Agricultural Development.

In June to August, 2010, famine struck the Sahel.^[3] Niger's crops failed to mature in the heat, and famine occurred. 350,000 faced starvation, and 1,200,000 were at risk of famine.^[4] In Chad, the temperature reached 47.6 °C (117.7 °F) on June 22 in Faya-Largeau, breaking a record set in 1961 at the same location. Niger tied its highest temperature record set in 1998, on also June 22, at 47.1°C in Bilma. That record was broken the next day, on June 23 when Bilma hit 48.2 °C (118.8 °F). The hottest temperature recorded in Sudan was reached on June 25, at 49.6 °C (121.3 °F) in Dongola, breaking a record set in 1987.^[5] Niger reported on July 14 that diarrhea, starvation, gastroenteritis, malnutrition, and respiratory diseases had sickened or killed many children. The new military junta appealed for international food aid and took serious steps to call overseas help.^[6] On July 26, the heat reached near-record levels over Chad and Niger,^[7] and about 20 had reportedly died in northern Niger of dehydration by July 27.

Desertification and soil loss[link]

Over-farming, over-grazing, and over-population of marginal lands and natural soil erosion have caused serious desertification of the region.^[8][9]

Major dust storms are a frequent occurrence, as well. During November 2004, a number of major dust storms hit the Chad, Nigeria, and northern Cameroon, originating in the Bodélé Depression.^[10] This is a common area for dust storms (occurring, on average, 100 days every year).

On 25 August 2008, heavy dust storms passed over the eastern plains of Somalia and the northeast of a still drought-hit Kenya.^[11] On March 23, 2010, a major sandstorm hit Mauritania, Senegal, the Gambia, Guinea Bissau, Guinea, and inland Sierra Leone. Another struck in southern Algeria, inland Mauritania, Mali, and northern Côte d’Ivoire^[12] at the same time.

The region is at risk of desertification.

See also[link]

References[link]

• Azam (ed.), Conflict and Growth in Africa: The Sahel, Organisation for Economic Co-operation and Development (1999), ISBN 92-64-17101-0.
• (French) Lagha CHEGROUCHE, "L'arc géopolitique de l'énergie : le croissant énergétique, in Le Soir d'Algérie, 19/12/2010 hi

Further reading[link]

• Dai, A.; Lamb, P.J.; Trenberth, K.E.; Hulme, M.; Jones, P.D.; Xie, P. (2004). "The recent Sahel drought is real". International Journal of Climatology 24 (11): 1323–1331. DOI:10.1002/joc.1083. http://www.mikehulme.org/wp-content/uploads/2007/04/2004-dai-et-al-sahel.pdf .
• Moseley, W.G. 2008. “Strengthening Livelihoods in Sahelian West Africa: The Geography of Development and Underdevelopment in a Peripheral Region.” Geographische Rundschau International Edition, 4(4): 44-50. http://works.bepress.com/cgi/viewcontent.cgi?article=1069&context=william_moseley

External links[link]

• Sahelian Acacia savanna (WWF)
• Sahelian Acacia savanna (National Geographic)
• rain4sahara.org: Rain for the Sahel and Sahara

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Selena Gomez
Gomez attending "The 6th Annual Hollywood Style Awards", Beverly Hills, CA on Oct. 10, 2009
Background information
Birth name	Selena Marie Gomez
Born	(1992-07-22) July 22, 1992 (age 19) Grand Prairie, Texas, U.S.
Genres	Pop, dance, pop rock[1]
Occupations	Actress, singer, Fashion Designer
Instruments	Vocals, piano, guitar, drums
Years active	2002–present
Labels	Hollywood
Associated acts	Selena Gomez & the Scene, Demi Lovato, Taylor Swift
Website	SelenaGomez.com

Selena Marie Gomez (born July 22, 1992)^[2] is an American actress and singer best known for portraying Alex Russo in the Emmy Award-winning Disney Channel television series Wizards of Waverly Place. She subsequently ventured into feature films and has starred in the television movies Another Cinderella Story, Wizards of Waverly Place: The Movie, and Princess Protection Program. She made her starring theatrical film debut in Ramona and Beezus.

Her career has expanded into the music industry; Gomez is the lead singer and founder of the pop band Selena Gomez & the Scene, which has released three RIAA Gold certified studio albums, Kiss & Tell, A Year Without Rain, and When the Sun Goes Down, spawned three RIAA Platinum certified singles, "Naturally", "Who Says" and "Love You Like a Love Song" and charted four No. 1 Billboard Hot Dance Club Songs.^[3] Gomez has also contributed to the soundtracks of Tinker Bell, Another Cinderella Story, Wizards of Waverly Place, and Shake It Up after signing a record deal with Hollywood Records.

In 2008, Gomez was designated a UNICEF Goodwill Ambassador.^[4]

Early life[link]

Gomez was born in Grand Prairie, Texas.^[2] She is the daughter of former stage actress Amanda Dawn "Mandy" Teefey (née Cornett) and Ricardo Joel Gomez.^[5][6][7] Her father is of Mexican ancestry, and her mother is of part Italian descent.^[8][9] Regarding her Hispanic heritage, Gomez said: "My family does have Quinceañeras, and we go to the communion church. We do everything that's Catholic, but we don't really have anything traditional except [that we] go to the park and have barbecues on Sundays after church."^[10] Her birth parents divorced when she was five years old, and she was raised as an only child by her working mother.^[5][11] In 2006, Mandy remarried Brian Teefey.^[12] She was named after Tejano singer Selena, who died almost three years after Gomez was born.^[13] In a 2009 interview with People, Gomez mentioned that she developed an early interest in acting from watching her mother prepare for and act in theater productions.^[11] She earned a high school diploma through homeschooling in May 2010.^[14]

Career[link]

[edit] 2002–06: Barney & Friends and early work

Gomez began her acting career at age seven, playing Gianna on Barney & Friends.^[15] She later had minor roles in Spy Kids 3-D: Game Over and the TV film Walker, Texas Ranger: Trial By Fire. Gomez also starred in the television movie Brain Zapped. (Selena Gomez also found out that she wanted to be an actress because in E Special she states that "I would also watch my mom on stage do her lines".)

In 2004, Gomez was discovered by the Disney Channel in a USA-wide scouting.^[16] Gomez appeared as a guest star on The Suite Life of Zack & Cody and had a guest appearance – that later turned into a recurring role – on Hannah Montana from seasons two to three. Gomez previously taped two different pilots that were spin-offs to two previous Disney series.^[17] The first one, What's Stevie Thinking?, was the spin-off to Lizzie McGuire. Gomez played Stevie Sanchez, Miranda Sanchez's little sister. The other show was titled Arwin!, the spin-off to The Suite Life of Zack & Cody, in which she played Alexa. Neither series was picked up.

[edit] 2007–09: Wizards of Waverly Place and Selena Gomez & The Scene

Gomez on the studio set of Wizards of Waverly Place before filming an episode for the show's first season in April 2007

In early 2007 Gomez was cast in the Disney Channel series Wizards of Waverly Place as one of the three main characters, Alex Russo. The show premiered to an audience of 5.9 million, becoming a hit. Many news outlets began dubbing Gomez the next 'Miley Cyrus' causing some controversy and a reported 'feud'. Gomez clarified that there was no feud and that she was flattered by the comparison, saying: "It's a little overwhelming, but I think really, it's a compliment. She's obviously extremely successful, and I think she's a wonderful performer ... So being compared to her, I was very, very flattered."^[18] Gomez recorded four songs, one of which was a cover, for theWizards of Waverly Place soundtrack, only one single (Magic) from the album was released.

In 2008, Gomez recorded a cover of "Cruella de Vil"—which included a music video—for the compilation albumDisneyMania 6. Gomez also recorded "Fly to Your Heart" for the 2008 animated film Tinker Bell. In July 2008, before Gomez' sixteenth birthday, she signed a recording deal with Hollywood Records, a music label owned by Disney.^[19] In May, of the same year, Gomez was featured, with Forever the Sickest Kids, on a duet version of the non-album song "Whoa Oh!".^[20] The same year Gomez appeared in Another Cinderella Story, the direct-to-DVD sequel to the 2004 Hilary Duff film, opposite Drew Seeley. She also had a minor voiceover role as one the Mayor's ninety-six daughters in Horton Hears a Who! which released in March of that year. In April, Lacey Rose, of Forbes ranked Gomez as being fifth on their "Eight Hot Kid Stars To Watch" list; and Rose described Gomez as having been "a multitalented teen".^[21] Gomez recorded three songs for the movie's soundtrack.

In 2009, Gomez formed the teen pop band Selena Gomez & the Scene. Kiss & Tell, the band's debut studio album and was released on September 29, 2009 by Hollywood Records. On March 5, 2010, the album was certified Gold by RIAA.^[3] The album's single, "Naturally", was certified Platinum by the RIAA on July 15, 2010.^[3] In February 2009, Gomez signed on to star as one of the two female leads in Ramona and Beezus, a film adaption of the children's novel series by Beverly Cleary.^[22][23] Gomez stated that she felt no pressure in taking more adult roles: "I think I’m fully aware of my audience and I’m still just a kid myself. I wouldn’t do a role I don’t feel comfortable doing or that my audience wouldn’t feel comfortable seeing."^[24]

In June 2009, Gomez did a guest appearance as herself in one episode of best friend Demi Lovato's Disney Channel television show, Sonny with a Chance, entitled "Battle of The Network Stars". That same month Gomez appeared alongside Lovato in the made-for-television Disney Channel movie, Princess Protection Program.^[25] The telecast garnered 8.5 million viewers becoming, at the time, the third most watched Disney Channel Original Movie.^[26] One month later, Gomez, along with two cast members of Wizards of Waverly Place appeared in a television three-way cross-over episode with Hannah Montana and The Suite Life on Deck, entitled Wizards on Deck with Hannah Montana.

On August 28, 2009 two months after appearing in Princess Protection Program, Gomez starred in Wizards of Waverly Place: The Movie, a made-for-television film based on the show.^[27] The film premiered to an audience of 11.4 million viewers becoming cable's No. 1 scripted telecast of 2009 and Disney Channel's second most-viewed film premiere after High School Musical 2.^[28] In September 2009, Wizards of Waverly Place won "Outstanding Children's Program" at the 61st Primetime Emmy Awards.^[29] In 2010, the film adaptation won the series its second consecutive Emmy for "Outstanding Children's Program" at the 62nd Primetime Emmy Awards.^[29]

[edit] 2010–2011:Theatrical film debut, A Year Without Rain and When The Sun Goes Down

Gomez on location in Paris, France filming Monte Carlo in June 2010

Gomez's first theatrical film Ramona & Beezus premiered on July 23, 2010 and met with generally positive reviews.^[30] In March 2010, Variety reported that Gomez was set to star as one of the three lead roles in Monte Carlo, alongside Leighton Meester and Katie Cassidy.^[31] In the film Gomez plays Grace, a girl who’s “mistaken for a socialite while on a trip to Paris.”^[32] To prepare for the role Gomez learned how to play polo and also took two weeks of vocal training to learn two different British accents.^[33][34] The same year Gomez confirmed that the fourth season of her hit Disney Channel show, Wizards of Waverly Place, would be its last.

Gomez performing at the 2011 MuchMusic Video Awards.

On September 17, 2010 , Selena Gomez and The Scene released their second studio album, A Year Without Rain The record debuted on the Billboard 200 at number 4, selling 66,000 copies. On January 19, 2011, the album was certified Gold by RIAA.^[3] As of April 2011, the band has sold 1,354,000 albums in the United States.^[35] To support the album, the band embarked on the mini-tour A Year Without Rain Tour. In February 2011, Deadline.com reported that Universal Pictures and Strike Entertainment had acquired the novel Thirteen Reasons Why by Jay Asher with Gomez attached to the lead.^[36] That same month TV Guide reported that Gomez would make a cameo in the Muppets film.^[37] On March 23, 2011, Hollywood Records announced through a press release that Selena Gomez & The Scene would be embarking on their third concert tour in the United States, the We Own the Night Tour ran during the summer of 2011.^[38] Production for the final season of Wizards of Waverly Place came to a wrap on May 14, 2011.^[39] Gomez co-hosted the 2011 MuchMusic Video Awards on June 19.^[40] She also hosted the 2011 MTV EMAs on November 6, 2011, in Belfast, Northern Ireland, where she performed her band's single "Hit the Lights". Near the end of 2011, it was reported Gomez was in talks to star in two upcoming films. Deadline.com announced in October that Gomez would take part in the comedy Hot Mess.^[41]

In early November, Variety reported that Gomez was in talks to star in the upcoming film Spring Breakers alongside James Franco and Vanessa Hudgens.^[42] Gomez confirmed to MTV that she had signed on for the project and that production will begin in early 2012.^[43] On June 28, 2011, Selena Gomez & the scene released their third studio album, When the Sun Goes Down, previously titledOtherside,^[44] The album debuted at number 4 on the Billboard 200, selling 78,000 copies its first week and the following week, the album rose to number 3 on the Billboard chart, becoming the band's highest charting album to date.^[45][46] On November 17, 2011, the album was certified platinum.^[3] The album's lead single, "Who Says" was certified Platinum by RIAA on June 23, 2011 and has become the band's highest charting song on the Billboard Hot 100 to date, peaking at number 21.^[3][47] The second single, "Love You Like a Love Song", was certified Platinum by RIAA on December 2, 2011, and became the act's first to sell over two-million copies.^[3][48]

2012–present: Focus on film[link]

In January 2012, Gomez announced that she would put her music career on hold.^[49] This was later reaffirmed as Gomez wrote on her Facebook page that she was taking a break from music in order to focus on her acting career, "my band and I are going our separate ways for a while. This year is all about films and acting and I want my band to play music wherever with whoever. We will be back but, it will be a good while."^[50] In February 2012, Gomez announced that the band would be taking a hiatus, so that she could focus on film for the year. She encouraged her band mates to work with other artists during the hiatus.^[51] The same month, it was announced that Gomez will replace Miley Cyrus in the animated comedy Hotel Transylvania playing Mavis, the daughter of Dracula who will be voiced by Adam Sandler.^[52] As of March 2012, Gomez has been cast in four upcoming films; in which three of them she has been cast as a lead role. She will first appear in Hotel Transylvania, an animated film, voicing the character of Mavis, who was originally supposed to be voiced by Miley Cyrus, however Cyrus dropped out of the film in early 2012 in order to focus on her music career.^[53] The film is scheduled to be released on September 21, 2012.^[54] Next, Gomez will appear in Spring Breakers, which is currently being filmed on location in Sarasota, Florida. The film is being written and directed by Harmony Korine.^[55] Gomez has also been cast as the main role of Hannah Baker in the film adaptation of young-adult fiction novel, 13 Reasons Why. The novel was written by Jay Asher.^[56] She will also play the lead role in a film called Hot Mess, a comedy film directed by Dave Meyers.^[56] On April 7, 2012, Gomez posted a video for fans in which she revealed that she will be filming a new movie called "The Getaway" in Bulgaria. ^[57]