Kingfishers

Objavljeno u Vaša pisma

A question about kingfisher behaviours following a sighting in Zavala (Stari Grad) in September 2015.

Alison Bujić, e-mail 22nd April 2016: Last September swimming in Zavala in the Stari Grad Bay in the early evening I saw a kingfisher diving repeatedly from a rock.  I have only ever seen them fish in freshwater rivers before and was very surprised.  A friend told me she had seen one (possibly the same bird) at Siroki Rot a few days earlier.  I would like to know how unusual this is.

Reply from Steve Jones, 23rd April 2016: In answer to Kingfisher question - they will take fish from the salt water, as in this case.

Kingfisher. Photo: Andreas Trepte, www.photo-natur.de.

 

Photo of Common Kingfisher, taken in Marburg, Germany by Andreas Trepte, reproduced according to the Creative Commons Attribution Share Alike 2.5 generic license, with thanks.


Nalazite se ovdje: Home vaša pisma Kingfishers

Novosti: Ekologija.hr

  • Keys crops such as cereals, potatoes, sugar and oils grown in areas with moderate to very high risk

    The vast majority of the UK’s essential foods, including cereals, potatoes, sugar and oil, are grown in areas of England rated as having a moderate to very high risk of drought.

    A very high proportion – 81% – of England’s fresh produce is concentrated in parts of the country that are already experiencing water stress, according to the analysis by the nature-focused investment fund Rebalance Earth.

    Continue reading...

  • Plans for one of Europe’s largest AI campuses in a Unesco-designated reserve have sparked a fierce local backlash

    The datacentre revolt spreading across the US has reached the rolling hills of north Devon in an uprising against a planned hyperscale AI data campus in the middle of a globally protected landscape.

    Perched on an inland cliff, the town of Great Torrington has views that stretch for miles over the landscape of the Unesco biosphere reserve in which it sits, taking in the winding River Torridge and rolling acres of wooded valley and wildflower meadows. Pastoral and peaceful, its history was notably punctured by violence in 1646 when the royalists’ resistance in the first English civil war was brought to an end by the parliamentarian New Model Army in a battle fought out in the narrow streets in heavy rain and darkness.

    Continue reading...

  • River charters part of wider movement establishing ‘moral’ framework to protect nature and hold institutions to account

    One Monday morning in spring last year, 12 people gathered in the morning drizzle at Joyce’s Pool, one of the sources of the Bristol River Avon, and took the first steps of the inaugural Avon pilgrimage.

    Over the course of eight days, a revolving cast of pilgrims walked about 100 miles from the source of the river to the point at which it reaches the sea, in some cases bivvying on the riverside at night. Along the way they planted trees, sowed seeds, restored footpaths and presented councillors and decision-makers with a fledgling Avon charter, developed by the Bristol campaign group Conham Bathing.

    Continue reading...

  • Powered by sun and wind, the uncrewed vehicle will collect data to help Australian scientists better understand how oceans absorb emissions

    A small uncrewed vessel has embarked on a lap around Antarctica and may not return for months.

    The seven-metre craft, which looks like a large kayak in hi-vis orange, is expected to travel about 22,000km through inhospitable waters, propelled by powerful westerly winds and energy from the sun. The journey is seven times the distance between Sydney and Perth.

    Continue reading...

  • This year’s ‘godzilla’ climate phenomenon has already broken temperature records. We ask a climate scientist what is happening

    This year’s huge El Niño, which comes less than two years since the last one, has already broken temperature records. To understand what is happening, and why, the Guardian interviewed Prof Mat Collins, a climate scientist at the University of Exeter, the author of some of the world’s most important climate reports and an expert on the dynamics of the El Niño southern oscillation.

    Continue reading...

  • Lewes, East Sussex: Owls, bats, badgers and countless birds are my new neighbours, but I’ve been particularly taken by a mystery tree – and its resident treecreeper

    I have made the woods my home, moving from Brighton to the outskirts of Lewes, where the garden backs on to the remains of an old oak wood. Here there’s a riot of wildlife: a badger that makes snuffle holes in the lawn, a family of tawny owls in the trees and a cauldron of bats in the chimney.

    I have plans to let the wood expand into the garden, but in the meantime there’s a mystery tree whose branches almost reach my bedroom window. It’s nearly dead, stressed from too many droughts, perhaps, or coming to a natural end. Some have suggested it’s a willow, but I suspect it’s a cultivated species I’m not familiar with.

    Continue reading...

  • After the available money ran out after just six hours, some fear they will have to reverse efforts to boost nature

    On Tuesday morning, farmer Peter Hatley logged on to his computer at 10am. England’s 2026 sustainable farming incentive (SFI) was opening for applicants and, after three bad harvests, the money would be a lifeline.

    But Hatley, who runs a 240-hectare family farm in Cambridgeshire, was faced with repeated error messages. He called the government’s helpline, which he says acknowledged there were problems with the scheme, but says by the time the problem was fixed, the money had gone.

    Continue reading...

  • Traditional woods have had a good innings but rising temperatures mean the need to find alternatives is pressing

    What happens if you run out of trees? It is a situation cricket must face in the perfect storm of an expanding game and more precarious growing conditions due to accelerated climate change.

    Cricket and willow are the sun and moon of sport. The handcrafted bat, the beautiful, insect-rich tree. But there are now 200 million regular cricketers worldwide. The UK produces half a million willow clefts a year, Kashmir between 1.5 to 3m. With one cleft equalling one bat, the numbers no longer add up.

    Continue reading...

  • Fewer than 400 Eriskay ponies remain. One of the rarest native breeds in the world, their plight is unique because the community living on their tiny Hebridean island are fighting for them. The ponies wander the village and townsfolk care for them together

    On the slopes of Beinn Sciathan, a rocky outcrop in the Outer Hebrides, white and grey ponies roam freely. Eriskay ponies, one of the rarest native breeds in the world, are critically endangered.

    They have often been mixed with the Highland pony and other breeds, giving the false impression of higher population numbers. Only about 300 to 400 Eriskay ponies are thought to remain.

    Continue reading...

  • Tom Calver has sacrificed milk yields to give his cows a more varied diet of plants and believes the result is better cheese and richer farmland

    In the rolling hills of Somerset, hundreds of thousands of cows placidly munch lush green grass to produce milk for cheddar.

    But six fields stand out. Rather than uniform grass, they have technicolour wildflowers sprouting across the meadows. Farmer Tom Calver said that to allow the flowers to grow he has to keep fewer cows and leave some fields ungrazed as they mature.

    Continue reading...

Novosti: Cybermed.hr

  • Novo istraživanje pokazalo je da promjene u sastavu crijevnih bakterija mogu poslužiti kao rano upozorenje na dijabetes tipa 2. Analiza podataka prikupljenih od stotina tisuća pojedinaca otkrila je stotine promjena u sastavu crijevnog mikrobioma (zajednice mikroorganizama koja nastanjuje probavni sustav), a te se promjene mogu uočiti prije nego što dođe do bilo kakvih promjena u razini glukoze u krvi.

  • Infekcije mokraćnog sustava među najčešćim su bakterijskim infekcijama, a uglavnom ih uzrokuje uropatogena bakterija Escherichia coli. No, čak i nakon liječenja antibioticima, velik broj pacijenata ponovno obolijeva od njih. Jedan od razloga je taj što bakterija može prodrijeti u stanice sluznice mokraćnog mjehura (njezin epitel) i ondje se sakriti, zaštićena kako od antibiotika tako i od imunološkog sustava pacijenta. Preživljavajući na taj način, te se bakterije kasnije mogu ponovno razmnožiti i uzrokovati ponavljajuće infekcije, što predstavlja sve veći problem jer opetovano liječenje antibioticima nosi rizik od razvoja rezistencije na antibiotike.

  • Atipični meningeomi su tumori koji nastaju u moždanim ovojnicama (meningama) i povezani su s visokim rizikom od povrata bolesti. Do sada nije bilo jasno imaju li pacijenti koristi od radioterapije nakon potpune kirurške resekcije tumora.

  • Novo istraživanje znanstvenika sa Sveučilišta u Lundu u Švedskoj pokazalo je da je 85 posto pacijenata s migrenom kod koje prevladava aura zabilježilo smanjenje broja dana s aurom na mjesečnoj razini za najmanje polovicu nakon liječenja antiepileptikom lamotriginom. Rezultate je potrebno potvrditi u kontroliranoj studiji, no oni bi s vremenom mogli biti značajni za skupinu pacijenata za koju trenutno ne postoji specifično liječenje same aure.

  • Prvi takav test na svijetu, koji su razvili znanstvenici s Instituta za medicinska istraživanja Garvan (Garvan Institute of Medical Research), otkrio je genetski uzrok nasljedne bolesti mišića kod osoba koje godinama, a ponekad i desetljećima, nisu dobile odgovor unatoč standardnim pretragama.

  • Nova studija pokazuje da moždani udar potiče rast glioma te otkriva stanične i molekularne posrednike uključene u taj proces, povezujući tako ozljedu mozga s malignim tumorima mozga.

  • Pacijentima s ranim simptomima Alzheimerove bolesti može se propisati terapija protiv amiloida, koja pomaže u uklanjanju ljepljivih nakupina amiloidnog proteina u mozgu – obilježja Alzheimerove bolesti. Iako ti tretmani ne mogu izliječiti Alzheimerovu bolest niti vratiti kognitivne funkcije u normalno stanje, dokazano je da usporavaju napredovanje bolesti. Učinci tih tretmana mogu varirati, a liječnici dosad nisu imali načina za praćenje učinaka liječenja kod pojedinog pacijenta osim putem skupih snimaka mozga.

  • Inhibitori imunoloških kontrolnih točaka (ICI) mogu potaknuti antitumorske odgovore, ali također mogu uzrokovati nuspojave koje zahtijevaju liječenje imunosupresivnim lijekovima. Nova retrospektivna studija otkrila je da su pacijenti koji su primali ICI i višestruke imunosupresivne terapije imali veći rizik od ozbiljnih infekcija. Gotovo polovica infekcija bile su teške, po život opasne ili smrtonosne infekcije. 

  • Nova studija Instituta Wistar otkrila je vezu između živčanog sustava i brzog razvoja neuroendokrinog raka prostate (NEPC), agresivnog oblika te bolesti. Studija je pokazala visoke razine neuromedina U (NMU) – vrste neurotransmitera – u stanicama prostate već u ranoj fazi nastanka NEPC-a; taj spoj potiče napredovanje tumora blokiranjem imunološkog odgovora. Smatra se, da bi ovo otkriće moglo poslužiti kao meta za terapiju bolesti koja je trenutačno gotovo neizlječiva.

  • Djeca kojoj su propisani lijekovi iz skupine GLP-1 za gubitak tjelesne težine, predijabetes ili dijabetes tipa 2 izložena su riziku od nutritivnih nedostataka – dijagnosticiranih kod gotovo svakog šestog pacijenta (16,8%) unutar prve godine, pokazuje nova studija. Nedostatak vitamina D bio je najčešći te je utvrđen kod 12,4% djece unutar godinu dana od početka liječenja lijekovima iz skupine GLP-1.

Novosti: Biologija.com