Orhideje: Skromne, Nevjerojatne, Očaravajuće!

2023. na Hvaru otkrivena su dva lokaliteta orhideja od strane gostujućih stručnjaka iz Zagreba, koji su pronašli endem Ophrys pharia i Himantoglossum robertianum.

Ophrys pharia, „Forka” Ophrys pharia, „Forka” Photo courtesy of Berislav Horvatić & Ljiljana Borovečki-Voska

Hrvatske divlje orhideje nisu spektakularne vrste poput onih iz tropskih krajeva. Iako cijenjene među ljubiteljima prirode, prečesto lokalnom stanovništvu prolaze neprimijećeno. Rezultat toga je nemarno uništavanje orhideja i njihovih staništa, posebno kroz ekstenzivnu uporabu herbicida. Ljiljana Borovečki-Voska je vrhunska botaničarka, po profesiji nastavnica. Njezin suprug Berislav Horvatić bio je viši znanstveni suradnik na Institutu za fiziku u Zagrebu, a nakon umirovljenja posvetio je velik dio svog vremena, ali i znanstvene stručnosti proučavanju orhideja zajedno sa svojom suprugom.

Ophrys pharia. Fotografija: Berislav Horvatić i Ljiljana Borovečki-Voska

Ophrys pharia bila je godinama nedohvatljiva. Berislav i Ljiljana znali su da je Ophrys pharia specifična za Hvar: opisali su je P. Devillers i J. Devillers-Terschuren u časopisu Naturalistes Belges (vol. 85: 233) 2004. godine, a fotografirali su je u blizini sela Vrbanj u središnjem dijelu Hvara u travnju 2007. godine.

Ophrys pharia. Fotografija: Berislav Horvatić i Lijljana Borovečki-Voska

Prije 2004. godine, Ophrys pharia bila je opisana kao podvrsta. Kada su 29. travnja 2023. krenuli u potragu za Ophrys phariu na Hvaru, bili su svjesni da će to biti zastrašujući izazov, možda čak i 'nemoguća misija'. Ophrys pharia opisana je na web stranici „Orchids of Britain and Europe“: „Ovo je veoma ugrožena vrsta, za koju se smatralo da je ne samo endem za Hrvatsku, već specifično za otok Hvar, gdje sve agresivnije poljoprivredne metode smanjuju stanište dostupno ovoj vrsti koju sada postaje izuzetno teško pronaći, čak i na njenim nekadašnjim uporištima oko Vrboske, u središnjem dijelu otoka.“

Ophrys pharia u polju. Fotografija: Berislav Horvatić i Ljiljana Borovečki-Voska

Kada se ugleda sitne orhideje stisnute među ostalim divljim cvijećem, bude sasvim jasno zašto je potrebna stručna makrofotografija kako bi se potvrdilo opažanje rijetkih vrsta!

Ophrys pharia u prirodi. Fotografija: Berislav Horvatić i Ljiljana Borovečki-Voska

Još važnije, značajke po kojima se razlikuju pojedine orhideje od drugih, često su vrlo suptilni detalji, što naravno čini orhideje tako fascinantnim i izazovnim biljkama za proučavanje.

Berislav slika orhideje.

Pravi stručnjaci poput Ljiljane (kojih je naravno vrlo malo) godinama strpljivo promatraju orhideje kako bi mogli sa sigurnošću identificirati različite vrste. Ophrys pharia križa se s Ophrys rhodostephane i ti hibridi su izuzetno rijetki.

Hibrid ophrys pharia x ophrys rhodostephane. Foto: Berislav Horvatić i Ljiljana Borovečki-Voska
Hibridi. Foto: Berislav Horvatić i Ljiljana Borovečki-Voska

Ophrys rhodostephane se izrazito razlikuje od Ophrys pharia te obiluje u Dalmaciji, a i na Hvaru. Vrijedan savjet Berislava: „najbolji i najlakši način da ih vidite mnogo je spora vožnja starom cestom između Brusja i Selca - naravno, u pravo doba godine. Neasfaltirana cesta kroz Rovan je također izvrsna.“ 

Ophrys rhodostephane. Foto: Berislav Horvatić i Ljiljana Borovečki-Voska

Nizozemski stručnjak za orhideje Frank Verhart proučavao je orhideje tijekom nekoliko posjeta Hvaru, no nije ugledao Ophrys phariu, da bi na kraju Berislav i Ljiljana u roku od tri dana pronašli ništa manje od devet primjeraka u okolici Vrbanja! Poput Franka Verharta i drugih botaničara, odmah su podijelili svoja otkrića s hrvatskom bazom podataka Flora Croatica Database. Pronalazak Himantoglossum robertianum (sin. Barlia robertiana) bio je neočekivani bonus, kako prethodno nije bio zabilježen na Hvaru.

Himantoglossum robertianum. Foto: Berislav Horvatić i Ljiljana Borovečki-Voska

Pronalazač je zapravo bio lokalni stanovnik Antun Vranković Bili iz sela Svirče. Iako se vrsta teško pronašla, nakon otkrića, Ljiljana i Berislav odmah su je identificirati. Prvobitno je viđena na području Rovana blizu Svirača. Ljiljana i Berislav su kasnije pronašli još jedan primjerak u masliniku ispod Pitava, zbog čega su zaključili da na otoku ima još primjeraka, iako rijetkih.

Antun Vranković Bili. Foto: Berislav Horvatić i Ljiljana Borovečki-Voska

Kako bi proslavili da Ophrys pharia nije izumrla na Hvaru, Berislav i Ljiljana su zabilježili svoje povijesno otkriće na šalicama kao trajni suvenir! 

Slavljeničke šalice. Fotografija: Berislav Horvatić i Ljiljana Borovečki-Voska

Izuzetno smo zahvalni Berislavu Horvatiću i Ljiljani Borovečki-Voska što su s nama podijelili neprocjenjive informacije o svom uspješnom terenskom putovanju na Hvar 2023. godine, kao i na dopuštenju da koristimo njihove tekstove i fotografije. Njihova predanost je od iznimne pomoći u kampanji podizanja svijesti o detaljima predivnih prirodnih resursa Hrvatske, kako bi ih očuvali i njegovali za buduće generacije. 

Ljiljana Borovečki-Voska autorica je knjige „Orhideje na Strahinjščici i susjednim područjima“, u nakladi Alfa, 2010. godine.

Relevantni članci:

Ljiljana Borovečki-Voska, Berislav Horvatic. 2020.  Orhidejski hibridi (Orchidaceae) na otoku Krku. Orchid hybrids (Orchidceae) on the Island of Krk. Glasnik hrvatskog botaničkog društva. (Article in Croatian)

Frank Verhart: Orchid observations in Croatia in 2017 and 2018: https://drive.google.com/file/d/1tqx1iIJUFLN8H7LJlFTkvlD6YhdzfsmJ/edit

Frank Verhart: 2017. Orchids on Pelješac. Eco Hvar website.

Frank Verhart. Orchid observations in Croatia in 2019. http://www.franknature.nl/Verhart%20orchid%20observations%20in%20Croatia%20in%202019.pdf

Grace Brewer. February 2024. Sneaky orchids and their pollination tricks. Royal Botanic Gardens, Kew, Blog article.

© Vivian Grisogono 2024.
Prijevod: Josip Vlainić

 

 

Nalazite se ovdje: Home Novosti iz prirode Orhideje: Skromne, Nevjerojatne, Očaravajuće!

Eco Environment News feeds

  • The bizarre vertical flight pattern has long puzzled experts but new research reveals why it may play a crucial role in the insect’s survival

    On a spring evening along the banks of the River Thames, thousands of mayflies can be seen engaging in what may be one of the world’s oldest dances. In the fading light, the males make a steep vertical climb, flip over and float back to Earth – wings and tail outstretched in a skydiving posture so as to drop slowly through the sky.

    Mayflies are among the world’s oldest winged insects, emerging roughly 300m years ago – long before dinosaurs walked the Earth. Even the Mesopotamian poem the Epic of Gilgamesh, one of the oldest pieces of literature, makes reference to the short-lived mayfly. Over the epochs, the insect’s basic design has changed very little compared with the fossils of their ancestors.

    Continue reading...

  • A KCL study has found that exposure during the first trimester of pregnancy delayed speech development

    Babies exposed to higher levels of air pollution in the early stages of pregnancy take longer to learn to speak than those exposed to lower levels in the womb, new research suggests.

    A study by researchers from King’s College London found exposure to nitrogen dioxide and fine and ultra-fine particulate matter during the first trimester of pregnancy delayed speech development at 18 months.

    Continue reading...

  • Scientists find annual sea surface temperatures across Europe reached highest levels recorded, while deadly wildfires set large parts of continent ablaze

    The Nordic heatwave that pushed temperatures above 30C (86F) in the Arctic Circle in July was part of a record-breaking year that saw abnormal heat sear more than 95% of Europe, a report has found.

    Parts of Scandinavia were scorched last summer by 21 days of punishingly hot weather that led to “tropical nights” in typically cool countries such as Norway, Sweden and Finland, according to a scientific report campaigners said showed “all the emergency warning lights are flashing red”.

    Continue reading...

  • West Dartmoor, Devon: On the moor, every puddle and pool is quivering with whirligig beetles, carving circles and rotating in pairs

    A calm, clear morning on Dartmoor and the shallow pools I pass are smooth as glass – scattered wedges of sky reflected between the grass and gorse. I am wandering the western edge of the moor, close to the village of Lydford, best known for its plunging gorge and waterfall. This is a place shaped by rain, from the peat bogs blanketing high ground to the rocky gullies carved by streams.

    There are endless puddles and pools, and on this windless day they appear completely flat and still. Only when I look closely, I see that something is agitating the surfaces of the water. Every one of them quivers with life: whirligig beetles.

    Continue reading...

  • Exclusive: 839,000 homes in urban areas face threat of surface-water flooding, with social housing tenants most vulnerable to costs

    Eight in 10 of the homes that are at high risk of flooding in England are now in towns and cities, according to analysis by the National Housing Federation (NHF), which said social housing tenants are disproportionately vulnerable to the financial cost.

    Research found that 839,000 homes in urban areas are now classed as being at high risk of surface water flooding, a threefold increase since 2018.

    Continue reading...

  • After her sister died, Victoria Bennett left Cumbria for the remote Scottish archipelago, where she learned to go with the ebb and flow of life

    It was during her first winter in Orkney that the nature writer Victoria Bennett experienced the joy of baying into the sea during a storm. “There’s something very physically releasing about howling,” she says. “It’s quite animalistic and powerful.” On a stormy beach, when waves are crashing on the rocks, “you can really let rip”, she says. “The sound just disappears.”

    Until that moment, Bennett had been struggling with her decision to move to the remote archipelago off the north coast of Scotland. “I was beginning to feel like I was in a fight against the sea, and against the weather.”

    Continue reading...

  • Heatwaves reach 45C across India as unseasonably cold weather affects parts of central Canada

    Widespread heavy rain is sweeping over southern China. By Wednesday, rainfall totals are expected to exceed 100mm across many parts of Guangxi, Guangdong, Fujian, Zhejiang, Jiangxi and Hunan provinces, and in some areas as much as 150-200mm.

    As a result, the Office of the State Flood Control and Drought Relief Headquarters and the Ministry of Emergency Management have been holding meetings with meteorological and hydrological departments to emphasise the importance of reinforced patrols and emergency responses to mitigate against the probable flooding that the intense rainfall is expected to bring. In particular, reservoirs with known safety concerns must remain empty during the period, as well as through the coming rainy season.

    Continue reading...

  • Pace of sea-level rise has turned Outer Banks coastal area into a ‘canary in the coalmine’ for other east coast communities

    Moving house has a more literal meaning on Hatteras Island, the slender hook of land that juts off the coast of North Carolina. After a slew of houses toppled spectacularly into the Atlantic Ocean recently, entire buildings are now being lifted on to wheels to flee the rapidly eroding coastline.

    Since September, 19 homes have been lost to waves that tore them from their pilings, sending them crashing into other structures like bumper cars before breaking up in the ocean. Spooked homeowners have turned to the unusual services of Barry Crum, a lifelong Hatteras resident who has become the island’s main house mover.

    Continue reading...

  • Surface ripples known as cat’s paws, caused by turbulence cascade, show where wind is – and were once seen as lucky

    On a windy day, the surface of a lake is not a continuous pattern of ripples but instead marked with patches of disturbance, as though a giant cat were patting the water. These surface patterns, known as cat’s paws, are caused by turbulent airflow in the atmosphere.

    Wind is caused by changing pressure at different spots on Earth’s surface but does not simply rush in a single mass from one place to another. The chaotic nature of the airflow, with slight differences between adjacent sections, breaks it up and splits out smaller swirls. This continues with large eddies breaking down into smaller ones, which break down further, a process known as turbulence cascade. At the lowest level, we get cat’s paws – which are usually a few metres across and last a few seconds.

    Continue reading...

  • Politicians, children and Māori groups gathered in the Wellington banquet hall to see in the flesh the success of efforts to protect country’s national bird

    When five kiwi were presented to a crowd of 300 people gathered inside the banquet hall of New Zealand’s parliament, there was an awe-struck intake of breath.

    As handlers moved through the group, cradling the whiskery birds, people looked on, spellbound. Some grew teary, and one boy, who noticed a soft brown feather drift to the floor, scooped it up, as his mother urged him to keep it safe.

    Continue reading...

Novosti: Cybermed.hr

Novosti: Biologija.com

Izvor nije pronađen