Microorganisms are the cornerstone of all marine life in the Red Sea

Microorganisms are the cornerstone of all marine life in the Red Sea

A diver swims past coral on the Great Barrier Reef in Australia. (AP)
A diver swims past coral on the Great Barrier Reef in Australia. (AP)
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Between the continents of Africa and Asia lies the Red Sea, a semi-enclosed basin located in oligotrophic (limited in nutrients) tropical and subtropical regions. Despite its harsh conditions, including elevated temperatures, high salinities and limited nutrients, it harbors rich diversity.

Within its clear blue waters lies another world, unseen to the naked eye but which plays a significant role in marine ecosystems.

Microbes are found suspended in the water column, spanning from the surface to the deep, dark sea. With millions of cells and particles in only one milliliter, they indeed form the unseen majority of the Red Sea.

Although microbes have often been overlooked, they are an essential component of the marine ecosystem.

They stimulate nutrient cycling, contribute to oxygen production, promote gas exchange between the sea and the atmosphere, support fisheries and form symbiotic relationships with fish and invertebrates to maintain a healthy balance in this marine environment.

These microbes together form a natural cycle called the microbial food web. It includes complex trophic interactions, in which energy and matter are recycled through microorganisms to reach higher levels in the food chain.

Microbial communities are composed of living organisms and nonliving biological entities such as viruses.

Cyanobacteria, tiny photosynthetic bacteria (0.2 to 0.2 micrometers), form the base of the microbial food web. Like plants, they perform photosynthesis to gain energy from sunlight to produce oxygen and organic matter.

Although microbes have often been overlooked, they are an essential component of the marine ecosystem.

Eman Sabbagh

Heterotrophic bacteria (0.2 to 0.5 micrometers), another element in the microbial food web, rely on the organic matter produced by cyanobacteria as a source of energy.

Another member of the microbial community is zooplankton, which are slightly larger (2 to 20 micrometers) and mainly predate on bacteria as their preferred source of food.

Viruses, meanwhile, are also important microbial components of the food web. Although they are very small (0.02 to 0.2 micrometers), they are the most abundant biological entities on the planet.

When we hear the word virus, the first thing that comes to mind is infection and mortality, but in truth viruses play a far more important role in the health and balance of marine ecosystems.

The contribution of beneficial microorganisms within the microbial food web, as well as those forming symbiotic relationships with other marine creatures and those simply suspended in the water column, serves as the cornerstone of all forms of marine life and, without it, life in the sea would not exist.

Indeed, these microscopic microbes have revealed some secrets, but much mystery remains hidden.

In celebration of World Water Day, I hope this article can help raise awareness about global waters, shedding light not only on the widely seen part but also on the invisible one.

I also want to take a moment to emphasize the remarkable efforts undertaken by the National Center for Wildlife in discovering novel habitats, such as blue holes, which I am sure are full of mystery.

The National Center for Wildlife is also dedicated to protecting marine and coastal environments in the Red Sea and Arabian Gulf, including coral reefs, seagrass and mangroves and the associated biodiversity, from large marine mammals to tiny algae, aligning with the Saudi Green Initiative and Vision 2030.

Eman Sabbagh spent eight years at King Abdullah University of Science and Technology working in the field of the microbial ecology of the Red Sea. She now works at the National Center for Wildlife.

 

Disclaimer: Views expressed by writers in this section are their own and do not necessarily reflect Arab News' point of view

China’s Xi accepts invitation to attend Moscow’s Victory Day in May, TASS reports

China’s Xi accepts invitation to attend Moscow’s Victory Day in May, TASS reports
Updated 50 sec ago
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China’s Xi accepts invitation to attend Moscow’s Victory Day in May, TASS reports

China’s Xi accepts invitation to attend Moscow’s Victory Day in May, TASS reports
  • Kremlin earlier said it had invited ‘many countries’ to attend the 80th anniversary of the end of World War Two
  • The Soviet Union lost 27 million people in World War Two, including many millions in Ukraine

MOSCOW: Chinese President Xi Jinping has accepted Russia’s invitation to attend the commemorations of the Soviet victory over Nazi Germany in World War Two, TASS state news agency reported on Monday.
“Chinese President Xi Jinping has accepted an invitation to take part in the celebrations on May 9 in Moscow on the occasion of the 80th anniversary of Victory in the Great Patriotic War,” TASS cited Russian ambassador to China, Igor Morgulov, as telling Russian state television.
The Kremlin said in December that it had invited “many countries” to attend the 80th anniversary of the end of the war, which Russians call the “Great Patriotic War.”
The Soviet Union lost 27 million people in World War Two, including many millions in Ukraine, but eventually pushed Nazi forces back to Berlin, where Adolf Hitler committed suicide and the red Soviet Victory Banner was raised over the Reichstag in 1945.
Nazi Germany’s unconditional surrender came into force at 11:01 p.m. on May 8, 1945, marked as “Victory in Europe Day” by France, Britain and the United States. In Moscow it was already May 9, which became the Soviet Union’s “Victory Day” in what Russians call the Great Patriotic War of 1941-45.
Victory Day has become Russia’s most important secular holiday.
Morgulov said that Xi in return, invited Russian President Vladimir Putin to China for the country’s commemoration of the end of World War Two, which are planned for September.


New Zealand wins toss, elects to field against South Africa in tri-series

New Zealand wins toss, elects to field against South Africa in tri-series
Updated 21 min 13 sec ago
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New Zealand wins toss, elects to field against South Africa in tri-series

New Zealand wins toss, elects to field against South Africa in tri-series
  • New Zealand beat Pakistan last week in tri-nation series clash between both sides 
  • South Africa have entered series without seven of their Champions Trophy players

LAHORE, Pakistan: New Zealand captain Mitchell Santner won his second successive toss and elected to field against an understrength South Africa lineup Monday in the cricket tri-nation series.
New Zealand had to make one forced change with opening batter Rachin Ravindra replaced by Devon Conway.
Ravindra sustained a blow on the forehead while fielding during New Zealand’s thumping 78-run win in the first match on Saturday against Pakistan and was rested for the second game.
Ravindra was struck on the head when he lost sight of the ball in what seemingly should have been a routine catch of Khushdil Shah at deep mid-wicket.
South Africa has entered the tournament without seven of its Champions Trophy players, who will arrive at Karachi over the weekend.
Matthew Breetzke, Mihlali Mpongwana, Senuran Muthusamy and Eathan Bosch were awarded ODI debuts on a wicket which Santner says “looks like another 300” pitch.
Glenn Phillips smashed his maiden ODI century as New Zealand rattled 330-6 in the first match.
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Lineups:
New Zealand: Devon Conway, Will Young, Kane Williamson, Daryl Mitchell, Tom Latham, Glenn Phillips, Michael Bracewell, Mitchell Santner (captain), Ben Sears, Matt Henry, Will O’Rourke.
South Africa: Temba Bavuma (captain), Matthew Breetzke, Jason Smith, Kyle Verreynne, Wiaan Mulder, Mihlali Mpongwana, Senuran Muthusamy, Eathan Bosch, Junior Dala, Lungi Ngidi, Tabraiz Shamsi.
 


After the ceasefire in Gaza, West Bank Palestinians face more Israeli barriers, traffic and misery

After the ceasefire in Gaza, West Bank Palestinians face more Israeli barriers, traffic and misery
Updated 43 min 51 sec ago
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After the ceasefire in Gaza, West Bank Palestinians face more Israeli barriers, traffic and misery

After the ceasefire in Gaza, West Bank Palestinians face more Israeli barriers, traffic and misery
  • Israel intensified its crackdown on the occupied West Bank, ramping up raids against militants in the north of the territory and subjecting Palestinians in the area to the strictest scrutiny

RAMALLAH: Abdullah Fauzi, a banker from the northern West Bank city of Nablus, leaves home at 4 a.m. to reach his job by 8, and he’s often late.
His commute used to take an hour — until Hamas’ attack on Israel on Oct. 7, 2023, after which Israel launched its offensive in the Gaza Strip.
The Israeli military also ramped up raids against Palestinian militants in the northern West Bank, and diverted its residents through seven new checkpoints, doubling Fauzi’s time on the road.
Now it’s gotten worse.
Since the ceasefire in Gaza between Israel and Hamas took effect, Fauzi’s drive to the West Bank’s business and administrative hub, Ramallah, has become a convoluted, at least four-hour wiggle through steep lanes and farm roads as Israel further tightens the noose around Palestinian cities in measures it considers essential to guard against militant attacks.
“You can fly to Paris while we’re not reaching our homes,” the 42-year-old said from the Atara checkpoint outside Ramallah last week, as Israeli soldiers searched scores of cars, one by one.
“Whatever this is, they’ve planned it well,” he said. “It’s well-designed to make our life hell.”
A ceasefire begets violence
As the truce between Israel and Hamas took hold on Jan. 19, radical Israeli settlers — incensed over an apparent end to the war and the release of Palestinian prisoners in exchange for Israeli hostages — rampaged through West Bank towns, torching cars and homes.
Two days later, Israeli forces with drones and attack helicopters descended on the northern West Bank city of Jenin, long a center of militant activity.
More checkpoints started going up between Palestinian cities, slicing up the occupied West Bank and creating choke points the Israeli army can shut off on a whim. Crossings that had been open 24/7 started closing during morning and evening rush hours, upturning the lives of hundreds of thousands of people.
New barriers — earthen mounds, iron gates — multiplied, pushing Palestinian cars off well-paved roads and onto rutted paths through open fields. What was once a soldier’s glance and head tilt became international border-like inspections.
Israel says the measures are to prevent Hamas from opening a new front in the West Bank. But many experts suspect the crackdown has more to do with assuaging settler leaders like Bezalel Smotrich, the finance minister and an important ally of Prime Minister Benjamin Netanyahu, who has threatened to topple the government if Israel does not restart the war in Gaza.
“Israel now has a free hand to pursue what it has wanted to in the West Bank for a long time: settlement expansion, annexation,” said Tahani Mustafa, a senior analyst at the International Crisis Group. “It was considered a potential trade-off.”
Asked why Israel launched the crackdown during the ceasefire, the Israeli military said politicians gave the order in part over concerns that the release of Palestinian prisoners — in swaps for Israeli hostages held by Hamas — could raise tensions in the West Bank.
The checkpoints all over the West Bank, it said, were “to ensure safe movement and expand inspections.”
“Checkpoints are a tool we use in the fight against terror, enabling civilian movement while providing a layer of screening to prevent terrorists from escaping,” said Lt. Col. Nadav Shoshani, an Israeli military spokesman.
Life disrupted
To spend rush hour at an Israeli checkpoint is to hear of the problems it has brought — Palestinian families divided, money lost, trade disrupted, sick people kept from doctors.
Ahmed Jibril said not even his position as manager of emergency services for the Palestinian Red Crescent protects him.
“We’re treated like any other private car,” he said, describing dozens of cases in which Israeli soldiers forced ambulances to wait for inspection when they were responding to emergency calls.
In one case, on Jan. 21, the Palestinian Health Ministry reported that a 46-year-old woman who had suffered a heart attack in the southern city of Hebron died while waiting to cross a checkpoint.
The Israeli military said it was not aware of that specific incident. But citing Hamas’ use of civilian infrastructure like hospitals to conceal fighters, the army acknowledged subjecting medical teams to security checks “while trying to reduce the delay as much as possible in order to mitigate harm.”
The UN humanitarian agency, or OCHA, reported that, as of last Nov. 28, Israel had 793 checkpoints and roadblocks in the West Bank, 228 more than before the war in Gaza.
The agency hasn’t updated the tally since the ceasefire, but its latest report noted a surge in “suffocating restrictions” that are “tearing communities apart and largely paralyzing daily life.”
A bubble bursts
With its upscale restaurants and yoga studios, Ramallah gained a reputation in past conflicts for being something of a well-to-do bubble where cafe-hopping residents can feel immune to the harsh realities of the occupation.
Now its residents, struck in numbingly long lines to run simple errands, feel under siege.
“All we want to do is go home,” said Mary Elia, 70, stalled with her husband for nearly two hours at the Ein Senia checkpoint north of Ramallah last week, as they made their way home to east Jerusalem from their daughter’s house. “Are we meant to never see our grandchildren?”
Suddenly, her face contorted in discomfort. She had to urinate, she said, and there were hours to go before they crossed.
A national obsession
Roll down the window at a bottlenecked checkpoint and the same soothing female voice can be heard emanating from countless car radios, reeling off every Israeli checkpoint, followed by “salik” — Arabic for open — or “mughlaq,” closed, based on the conditions of the moment.
These reports recently beat out weather broadcasts for top slot on the West Bank radio lineup.
Almost every Palestinian driver seems able to expound on the latest checkpoint operating hours, the minutiae of soldiers’ mood changes and fiercely defended opinions about the most efficient detours.
“I didn’t ask for a Ph.D. in this,” said Yasin Fityani, 30, an engineer stuck in line to leave Ramallah for work, scrolling through new checkpoint-dedicated WhatsApp groups filled with footage of soldiers installing cement barriers and fistfights erupting over someone cutting the line.
Lost time, lost money
It was the second time in as many weeks that his boss at the Jerusalem bus company called off his morning shift because he was late.
Worse still for Nidal Al-Maghribi, 34, it was too dangerous to back out of the queue of frustrated motorists waiting to pass Jaba checkpoint, which severs his east Jerusalem neighborhood from the rest of the city. Another full day’s work wasted in his car.
“What am I supposed to tell my wife?” he asked, pausing to keep his composure. “This job is how I feed my kids.”
Palestinian trucks, packed with perishable food and construction materials, are not spared the scrutiny. Soldiers often ask truckers to pull over and unload their cargo for inspection. Fruit rots. Textiles and electronics get damaged.
The delays raise prices, further choking a Palestinian economy that shrank 28 percent last year as a result of punitive Israeli policies imposed after Hamas’ attack, said Palestinian Economy Minister Mohammad Alamour. Israel’s ban on most Palestinian workers has left 30 percent of the West Bank’s workforce jobless.
“These barriers do everything except their stated purpose of providing security,” Alamour said.
“They pressure the Palestinian people and the Palestinian economy. They make people want to leave their country.”


Egypt to host emergency Arab summit on Feb. 27 to discuss ‘serious’ Palestinian developments

Egypt to host emergency Arab summit on Feb. 27 to discuss ‘serious’ Palestinian developments
Updated 10 February 2025
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Egypt to host emergency Arab summit on Feb. 27 to discuss ‘serious’ Palestinian developments

Egypt to host emergency Arab summit on Feb. 27 to discuss ‘serious’ Palestinian developments
  • Egypt has been rallying regional support against Trump’s plan to relocate Palestinians from Gaza Strip to Egypt and Jordan
  • Trump's remarks have prompted global backlash as Arab countries firmly reject proposal, insist on two-state solution 

CAIRO: Egypt will host a summit of Arab nations on February 27 to discuss “the latest serious developments” concerning the Palestinian territories, its foreign ministry said in a statement on Sunday.

The “emergency Arab summit” comes as Egypt has been rallying regional support against US President Donald Trump’s plan to relocate Palestinians from the Gaza Strip to Egypt and Jordan while establishing US control over the coastal territory.

Sunday’s statement said the gathering was called “after extensive consultations by Egypt at the highest levels with Arab countries in recent days, including Palestine, which requested the summit, to address the latest serious developments regarding the Palestinian cause.”

That included coordination with Bahrain, which currently chairs the Arab League, the statement said.

On Friday, Egyptian Foreign Minister Badr Abdelatty spoke with regional partners including Jordan, Saudi Arabia and the United Arab Emirates to shore up opposition to any forced displacement of Palestinians from their land.

Last week, Trump floated the idea of US administration over Gaza, envisioning rebuilding the devastated territory into the “Riviera of the Middle East” after resettling Palestinians elsewhere, namely Egypt and Jordan.

The remarks have prompted global backlash, and Arab countries have firmly rejected the proposal, insisting on a two-state solution with an independent Palestinian state alongside Israel.


England’s Bethell ruled out of Pakistan-hosted Champions Trophy— captain

England’s Bethell ruled out of Pakistan-hosted Champions Trophy— captain
Updated 10 February 2025
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England’s Bethell ruled out of Pakistan-hosted Champions Trophy— captain

England’s Bethell ruled out of Pakistan-hosted Champions Trophy— captain
  • Left-handed Jacob Bethell sat out second ODI against India with hamstring injury
  • England call up Somerset batsman Tom Banton on Sunday as cover for injured Bethell

NEW DELHI: Jacob Bethell is set to miss next week’s Champions Trophy after the left-handed batsman sat out the second one-day international against India with a hamstring injury.

The 21-year-old Bethell made 51 in the opening defeat last week, but was missing on Sunday as India took an unbeatable 2-0 lead in the three-match series in Cuttack.

The 50-over Champions Trophy begins on Feb. 19 in Pakistan and Dubai.

“I’m pretty sure (Bethell) has been ruled out of the Champions Trophy, to be honest,” captain Jos Buttler admitted after England’s four-wicket defeat.

“That’s really disappointing for him. Obviously, he played nicely the other day and has been one of the really exciting players,” he added.

“It’s a shame that injury is going to rule him out.”

England have not made an official statement on Bethell’s status, but they called up Somerset batsman Tom Banton on Sunday as cover.

Wicketkeeper-batsman Banton, 26, was due to arrive in India on Monday and join the England squad for the final match of the series in Ahmedabad on Wednesday.

Banton has played in six ODIs, with a top score of 58 and averages 26.80 with the bat.

England’s first match in the Champions Trophy is against World Cup winners Australia on Feb. 22.

Final squads must be submitted by Feb. 12.