Autumn update from Dol, 2016

Steve Jones has kept up his Nature watching through Hvar's mild autumn weather. More dragonflies, but less birds than expected.

Broad-bodied chaser dragonfly Broad-bodied chaser dragonfly Photo: Steve Jones

SJ, 23 9 2016. Do you know much about dragonflies on the Island? Over the Summer I have seen several and I know Norman nearby has also seen similar numbers.

Common Darter dragonfly. Photo: Steve Jones

While I know a few of the more obvious ones, I am puzzled: one thing I do know is that they like water in which to lay. The dragonfly life cycle is for the most part spent underwater and they only emerge as what we see towards the end of their life and to mate. So I am puzzled as to where they can possibly lay eggs, I only know one source of water down near the airfield and I don’t believe from there they would travel up to Dol. I often think they could be laying in the numerous wells/water storage places in the fields but most are covered and I don’t know how they would emerge. One species described to me was the Golden Ringed Dragonfly and I've read that this likes fast flowing water so I am even more at a loss.

Red Veined Darter dragonfly. Photo: Steve Jones

I was down near the airfield yesterday and several of just two species that I could recognize were flying, including the Common Darter. One of the species tended to be flying joined to their mate, there were several of these.

Red Veined Darter dragonfly. Photo Steve Jones

Norman and I are both seeing more Dragonflies than either of us expected here in Dol – more investigation needed.

Apart from the dragonflies, I was in Jelsa on Wednesday (September 21st) and saw that there were still Swifts around, with a few House Martins scasttered amongst them. And the odd Swallow was still around yesterday. A friend in the UK told me that the Swifts departed from our street pretty well in the first ten days of August.

VG, 23 9 2016. Yes, actually there are many more sources of water than you'd think, off the beaten tracks, but also in the fields. A lot of the enclosed wells have an open basin on top, which can be home to all sorts of insects, including water snakes - one of those regularly basks in the cistern beside my land, heading off reluctantly into the undergrowth after the water has completely evaporated.

Water cistern near Ivan Dolac. Photo: Vivian Grisogono

Of course the wildlife population is adversely affected if the fields have been doused in herbicide. Talking about herbicide, did you see that the sale of Cidokor/Roundup is to be banned in the EU from October 1st, together with 11 other glyphosate-based herbicides? Good as far as it goes, but it still leaves 12 other glyphosate herbicides on the market!

I'll look forward to hearing the results of your dragonfly investigations. A good place to see them is in the environs of Humac, where there are some lovely natural pools where the horses and hunting dogs drink, and butterflies abound, as there are no poisoned fields in the vicinity.

Natural pool near Humac. Photo: Vivian Grisogono

VG, 3 10 2016. Have you seen any bats recently?? I'm really concerned at how few there are, compared to crowds up to about ?10-12 years ago, counting from when I first arrived in Pitve in 1988. And bee-keepers tell me they have no honey this year, and are taking their hives to Šćedro, where there are fewer environmental poisons around.

SJ, 3 10 2016. Bats? Yes, a few. Some around the house but not often or regular. Couldn’t identify species either.

I've just returned from Stari Grad where I saw a few Swifts flying around and still one Swallow, so I suspect it will be much the same in Jelsa. Can’t remember which evening, in the latter part of last week and very high up about 150 birds went over the house, by far the majority were House Martins with a few Swallows amongst them.

VG, 25 10 2016. Maybe this recent article by Chris Baraniuk about ring-necked parakeets in the UK might be of interest? I used to love watching those birds squawking their way to and fro across west London! More recently I learned that the same kind of parakeets arrived in the rgion of Heidelberg in Germany and Barcelona in Spain at around the same time as they were first seen in the UK, sometime in the 1970s. I wonder where they came from, and why they spread over parts of Europe?

SJ, 25 10 2016. Yes – thanks for the article, not being a frequent visitor to London I was overjoyed to see some parakeets while I was at Twickenham for a Rugby match some years ago, life doesn’t get any better than that – Rugby and Bird Watching!

I am helping neighbours pick Olives for my sins for another week ( I’d forgotten how much fun that was/is ………….. ummmm) but managed a trip to the airfield on Sunday morning: I saw at least 100 Pied Wagtails in varying sized flocks, with smaller stuff too distant to identify properly. There was also an unidentified Pipit which I will persevere with. Robins are singing everywhere now but seldom prominent . My last Swift was seen on October 23rd, it's possible that there are a few still around, but as I've not been into town I can't say for sure. I saw a Black Redstart yesterday in Prapatna. A rough count gives me around 60 species which is a little disappointing, I had expected more. But I might have missed several species, through not travelling to different locations.

Black Redstart. Photo: Steve Jones

VG, 25 10 2016. I'm also up to my ears in olives. Mercifully I picked my own early, with pleasing results. I'm now helping my friends and neighbours, which in some ways is more arduous.

SJ, 28 10 2016. Don’t know whether or not you can help me here. Is there a bird called a “lugarin” I heard yesterday in conversation so I am presuming it is a dialect word for something? Would you know – Serin perhaps?

VG, 28 10 2016. My Pitve-Zavala dialect dictionary defines lugarin as 'zelenkasta konopljarka', which seems to be commonly translated as greenfinch. Konopljarka is linnet. Any help? I hope those people weren't talking about trapping them. It's now against the law to trap migrating songbirds, but....

SJ, 28 10 2016. No – I think it was flying overhead – the person who was talking about it is definitely not a trapper/ hunter of anything like this for sure. Thanks for very much for that, I keep periodically hearing them but am not seeing many. But just didn’t know the word ……………. One day perhaps! I keep waiting for this book “Ptice Hrvatske i Europe” , if I ever get a copy. Have been in touch with someone now who may be able to help.

Was picking Olives yesterday and came across this spider, pretty well the same size as an Olive or just a fraction bigger and it very nearly got picked as one. The circular part of it was the size if an adult thumb nail. Tried to ID, am thinking it is a female of the Garden Spider variety (Araneus diadematus) – although I wouldn’t bet on it - of which there are many, it seems. Anyhow the second biggest I have seen since being here. Pretty impressive.

Big bright spider among the olives. Photo: Steve Jones

VG, 28 10 2016. That's a beauty! The biggest spider I've seen in my field was possibly a type of Black Widow, very bright, with orange stripes, perhaps about the size of a 5 kuna piece. It stayed peacefully in its web between two olive trees for quite some time, fortunately out of reach of the dogs, and then went on its way. Wondrous.

SJ, 1 11 2016. Black Redstart day. I saw the one last week in Prapatna, but all too quickly, which always makes one doubt. However I have seen a few more in and around  Dol in the last few days, including a couple in the garden. There were several in one of the fields nearby, possibly up to a dozen, so clearly they have come in from somewhere. I wonder whether they over-winter or move on.

I also saw a Wren in the garden during the week, the first one of the year for me here.

SJ, 6 11 2016. Went out briefly this morning and amongst other species was delighted with about 150 – Goldfinch/Gardelin.

Goldfinches. Photo: Steve Jones

Also - and a great record - one solitary Swift. Several other flocks about, I am thinking they are mainly Chaffinches but they're a bit too far away to identify clearly.

VG, 5.11.2016 Wonderful chaffinches: let's hope not too many of these beautiful birds fall into the hands of the (now illegal) trappers..

SJ, 8 11 2016. I have started collating all the birds seen this year in a table with English/Latin/Croatian names - but not dialect. I think I am at around 60 species now.

VG, Thanks Steve, we'll look forward to seeing the full list!

© Steve Jones, with Vivian Grisogono 2016

For more of Steve's beautiful nature pictures, see his personal pages: Bird Pictures on Hvar 2017, and Butterflies of Hvar

Nalazite se ovdje: Home Okoliš Novosti iz prirode Autumn update from Dol, 2016

Novosti: Ekologija.hr

  • Return of winds and extreme heat threaten firefighters’ attempts to bring blazes under control

    Nearly 4,000 people have been evacuated from tourist sites on France’s Atlantic coast as the return of winds and extreme heat jeopardises firefighters’ battles to contain wildfires raging in France and Spain.

    The precautionary evacuation order in France, which covers campsites, holiday villages and other tourist accommodation around the resort of Lacanau to the west of Bordeaux, exacerbated a wildfire emergency described by the French president, Emmanuel Macron, as the “toughest” situation the country had dealt with since the second world war.

    Continue reading...

  • The Earth keeps getting hotter and experts fear this year's El Niño, nicknamed 'Godzilla' because of its predicted intensity, could raise global temperatures by up to 3.6C. Environment correspondent Damien Gayle spoke to climate scientists to understand how the weather phenomenon and the climate crisis pose a huge threat to the planet

    Continue reading...

  • Temperatures up to 35C forecast, triggering heat health alerts and pleas to take care in parched parks and rural areas

    Paramedics and firefighters are braced for emergencies across the country this week after UK forecasters predicted a fourth heatwave of the year.

    Temperatures are forecast to reach as high as 35C by Wednesday, triggering heat health alerts and an appeal from fire chiefs to take care in parched parks and rural areas.

    Continue reading...

  • Intensive nature of modern chicken farming creates ideal conditions for campylobacter, allowing bacteria to evolve

    Industrial chicken farming is accelerating the spread of the world’s most common bacterial cause of diarrhoea, scientists have found.

    The study found a dramatic increase in the exchange of campylobacter strains between wild birds and chickens as farming has intensified, creating the ideal conditions for the bacteria to mix, spread and acquire new traits. There has also been a rise in antimicrobial resistance traits in circulating strains, raising concerns that serious illness in people will be more difficult to treat.

    Continue reading...

  • North Yorkshire: It’s been a remarkable breeding season for these gorgeous creatures with ripped physiques and all-seeing eyes

    “Just seen a gorgeous hare and thought of you. They’ve had an unbelievable breeding season.”

    Like most farmers, my friend Richard is always busy and often exasperated. But he’s also refreshingly cognisant of his privilege and determined not to blow the opportunity to make a difference. Nature is always part of his management, and now and then I get a message sharing a wildlife update and take it as a cue to visit.

    Continue reading...

  • Experts who helped Burnham draw up Manchester carbon neutral pledge say backtracking would send wrong message amid wildfires and heatwaves

    Leading climate scientists who created Greater Manchester’s carbon neutral by 2038 commitment are urging Andy Burnham to unequivocally reject new drilling in the North Sea.

    In a letterto the prime minister they said he, as mayor of Greater Manchester, had unveiled one of the UK’s most ambitious local climate programmes that tackled housing, green growth and public transport.

    Continue reading...

  • From Afghanistan to Taiwan, unprecedented deluge highlights devastating impact of climate breakdown

    “It rained for 10 days and 10 nights, non-stop – I’d never seen anything like it,” says Anar Gul, a construction worker who lives in the remote district of Dur Baba in eastern Afghanistan.

    The houses in his village are built from stone and mud, which makes them extremely vulnerable to heavy rains. After days of rain, Gul’s kitchen collapsed and his neighbour, Sayed Afsar Sadat, saw a large part of his house completely destroyed. “Rains like this are coming heavier and earlier each year,” says Sadat. “They are destroying the roads and washing away our crops. It’s impacting us directly.”

    Continue reading...

  • Conservationists are thrilled at the arrival of three juvenile birds at Willington Wetlands, hoping more will follow

    A long orange beak poked curiously out from its wooden crate, followed by a sleek head and slender body. Then the first white stork of the morning flapped its wings and took the air. Moments later a second emerged tentatively to stalk through the long grass, followed closely by a final sibling who stretched its wings and explored the length of the enclosure.

    The trio of juvenile white storks have just arrived at their new home in Willington Wetlands in Derbyshire and conservationists are hopeful that their presence will kickstart the return of the birds to the Midlands after an absence of more than 600 years.

    Continue reading...

  • The daily dread pushed me to enroll in a standup class. Could I channel my despair into something lighter?

    If you had told me six months ago that I would soon be performing standup comedy to dozens of strangers, I would have assumed it was a bad dream.

    Public speaking ranks about as high as driving in rush hour traffic through downtown Boston on my list of favorite activities. That I would choose to do standup, with its potential for public humiliation, is basically unimaginable.

    Continue reading...

  • Matthew Myerscough’s remarkable find is one of many detailed in his new book. But his journey into fossil hunting began years earlier, when he was caught in an avalanche

    When Matthew Myerscough walks along a beach, he cannot help hunting for fossils. “I think my fossil radar is always on – even if I’m not looking, it’s hard sometimes to not see things,” says the 40-year-old civil engineer, who has discovered thousands of fossils on British beaches.

    It was while he was “not looking” on Lavernock beach near Penarth, south Wales, that he recently stumbled across the fossilised bone of an early type of plesiosaur, a marine reptile that roamed the oceans while dinosaurs stalked the land during the early Jurassic period.

    Continue reading...

Novosti: Cybermed.hr

  • Nedavni objavljeni pregled ispitao je dokaze o učincima borovnica, grožđa i njihovih bioaktivnih spojeva na markere kardiovaskularnog rizika. Bobičasto voće i grožđe sadrže širok raspon polifenolnih bioaktivnih spojeva, uključujući resveratrol, flavonoide i antocijanine, s protuupalnim, antioksidativnim i potencijalno kardioprotektivnim biološkim učincima.

  • Biljna prehrana potiče zdravlje crijeva, imunološkog sustava, metabolizma i kardiovaskularnog sustava, dijelom kultiviranjem raznolike zajednice crijevnih bakterija. Odavno je poznato da te koristi djelomično proizlaze iz vlakana u biljnoj hrani, koju prerađuju naše komenzalne crijevne bakterije, i često jarko obojenih fitokemikalija koje biljke proizvode kako bi se zaštitile od prijetnji iz okoliša

  • Američki znanstvenici s Kennedy Krieger Instituta i Johns Hopkins Medicine otkrili su da konsolidacija pamćenja tijekom spavanja ovisi o koordiniranoj aktivnosti između tri regije mozga, a poremećaji u toj aktivnosti mogu narušiti performanse pamćenja. 

  • Studija koju je provela Cleveland Clinic pokazuje vezu između povišenih razina TMAO-a (trimetilamin N-oksida) u krvi - nusprodukta probave hranjivih tvari koje se nalaze u crvenom mesu i drugim životinjskim proizvodima - i većeg rizika od fibrilacije atrija. Naime, pokazalo se, da TMAO koji proizvode crijevni mikrobi mijenja električno okruženje srca, povećavajući osjetljivost na abnormalne ritmove.

  • Prema rezultatima novog istraživanja, izgleda da je mikroglija primarni pokretač gubitka sna kod Alzheimerove bolesti. Korištenjem lijeka za privremeno uklanjanje tih stanica u životinjskim modelima, znanstvenici su uspješno obnovili više od dva sata sna dnevno, pružajući novu metu za liječenje bolesti.

  • Djeca hospitalizirana s teškom upalom pluća mogu sigurno prijeći s injekcijskih na oralne antibiotike nakon što se počnu oporavljati, što mnogima omogućuje brži povratak kući i završetak liječenja izvan bolnice, pokazuje nova studija.

  • Primarni bilijarni kolangitis rijetka je autoimuna bolest koja utječe na jetru i može napredovati u cirozu. Nastaje kada imunološki sustav napadne male žučne kanale unutar jetre. Kao rezultat toga, žuč se nakuplja, što dovodi do upale i progresivnog oštećenja jetre. Iako postoji terapija prve linije, 40% pacijenata ne reagira adekvatno na nju ili je ne može tolerirati, pa je potrebno razviti nove mogućnosti liječenja.

  • Od staničnog recikliranja do kognitivnog starenja, spermidin privlači znanstveni interes, ali dokazi potrebni za rutinsku ljudsku upotrebu još se pojavljuju. Spermidin je sveprisutni prirodni poliamin i mimetik kalorijske restrikcije, neophodan za staničnu proliferaciju i homeostazu tkiva.

  • Izmjena plazme može pomoći u liječenju ljudi s rijetkom upalnom bolešću koja može uzrokovati sljepoću, pokazuje nova studija. Izmjena plazme dovela je do oporavka većine ljudi s bolešću, koja se naziva bolest povezana s antitijelima protiv mijelinskog oligodendrocitnog glikoproteina (MOGAD), a nuspojave su bile rijetke.

  • Terapije deplecije B-stanica, u kojima se privremeno uklanjaju B-stanice imunološkog sustava, koje mogu pokretati aktivnost bolesti kod multiple skleroze, značajno su doprinijele poboljšanju liječenja pacijenata posljednjih godina. No, sada su znanstvenici otkrili prethodno nepoznati mehanizam putem kojeg terapije deplecije B-stanica doprinose boljem tijeku bolesti kod pacijenata s multiplom sklerozom. Iznenađujuće, čini se da liječenje dio svog blagotvornog učinka ostvaruje mobilizacijom regulatornih imunoloških stanica koje se prirodno nalaze u crijevima. 

Novosti: Biologija.com