Be part of us as John Smout recounts his journey to Straniger Alm within the Austrian Alps, the place alpine pastures and boggy slopes present a backdrop for a unprecedented encounter with lizards on the fringe of evolution: the place egg layers and live-bearers meet.
Please describe your subject web site.
Our fieldwork takes place in Austria, round 1.5 km above sea stage within the Carnic Alps. The sphere web site is at Straniger Alm, just some hundred meters from the Italian border. In Austria, an alm is a high-altitude mountain pasture, and Straniger Alm is owned communally by farmers from the close by village of Stranig. The farmers graze their cows and goats there in the course of the summer season months and convey them right down to the valley for the winter. The alm additionally has a visitor home for hikers and different vacationers, and a dairy which produces “bergkäse” or mountain cheese, and different milk merchandise.
Photograph credit score: Molly Uzzell. Our subject web site at Straniger Alm. It’d appear like a “wild” place, however truly virtually the entire panorama is cultivated – though loads of wild animals and vegetation nonetheless make their house right here.
The fieldwork web site is mainly contiguous with the pastureland, overlaying lower than half a sq. kilometer of space, largely working alongside a stream (the Stranigbach). The terrain is steep, nevertheless, overlaying slightly over 200m elevation achieve from the bottom to the best level. The bottom is usually fairly boggy, with giant areas of sphagnum moss, particularly close to the stream. Elsewhere, the vegetation may be dense and thorny, with brambles overlaying some areas, alongside heather and alpenrose (a kind of rhododendron), and occasional larches and spruce timber. Surrounding the pasture is a business coniferous agri-forest, managed for timber manufacturing.
Most significantly for our work there, Straniger Alm is the location of a novel hybrid zone between oviparous (egg-laying) and viviparous (giving delivery to dwell younger) lizards. Oviparous frequent lizards lay eggs enclosed in a calcified eggshell, which develop externally for 35 – 40 days earlier than hatching; viviparous frequent lizards give delivery to completely developed younger enclosed in a skinny, non-calcified membrane, from which the younger emerge inside just a few hours or days.
What venture are you doing?
Our fieldwork varieties a part of a 3.5-year NERC-funded venture, “Intercourse particular health landscapes within the evolution of egg-laying vs dwell delivery”, beneath PI Kathryn Elmer on the College of Glasgow.
Photograph credit score: John Smout. Our research species, the frequent lizard.
How lengthy did you go as much as the location for, and when do you do the fieldwork within the 12 months?
The 2024 subject season ran from the primary week of June to the ultimate week of September, a interval of about 4 months. The 2025 subject season is prone to be even longer, beginning earlier within the 12 months with the emergence of the lizards from hibernation in April/Might. Journey to the sphere web site is by automobile, up the mountain street from the Gail Valley north of the location – additionally it is accessible from the Italian aspect, however the street on that aspect just isn’t as effectively maintained.
What lodging do you keep in whereas on web site?
For the primary two months of the 2024 subject season, we slept in a mountain hut within the higher half of the sphere web site above the alm home. The hut has simply two rooms, a kitchen with a wood-fired vary, and a bunk room with 4 beds, in addition to an out of doors rest room, and no working water – only a pump to boost water from a close-by stream. From August to September, we slept outside in tents in a special a part of the location. For the previous couple of weeks, we stayed in a visitor room within the alm home itself.
What information are you gathering and what strategies are you utilizing?
Our present venture focuses on the health tradeoffs confronted by viviparous, oviparous and hybrid lizards, particularly variations between female and male lizards of every kind. Earlier work on the web site has proven variations in reproductive funding and reproductive success between oviparous, viviparous, and hybrid feminine lizards, however we all know quite a bit much less in regards to the reproductive success of male lizards and the survival of offspring after hatching/delivery. In 2024, we collected oviparous, viviparous and hybrid lizards of each sexes for managed breeding experiments to start out in 2025. For the pregnant females we caught, we additionally collected information on their reproductive traits – eggshell samples, embryo stage at oviposition, and incubation time, in addition to different related information comparable to clutch dimension and weight, and maternal weight after oviposition/parturition.
This 12 months, when the lizards emerge from hibernation and turn into reproductively lively, we is not going to solely accumulate information from the females and their clutches but additionally monitor the survival charge of the offspring, which will likely be maintained in captivity beneath naturalistic circumstances.
Photograph credit score: John Smout & Molly Uzzell. Oviparous (left), viviparous (proper) and hybrid (center) Z. vivipara clutches from this 12 months’s fieldwork. The variations in reproductive traits are dramatic, however hybrid lizards can nonetheless reproduce.
What have you ever discovered from being up within the subject, whether or not that be about subject work logistics, some difficulties related to subject work, or some observations that you simply didn’t count on, associated or not associated to your venture?
A lot of the subject workforce had been a part of earlier years’ subject journeys to the location, and so had some thought of what to anticipate. That stated, final 12 months’s subject season was significantly difficult. For a lot of the four-month interval, we have been working very lengthy hours, with restricted entry to exterior assist; cellular sign, electrical energy and entry to the web have been all solely intermittently obtainable. We additionally handled sudden challenges by way of animal husbandry and care, new ailments we had not beforehand noticed within the inhabitants, elevated parasite burdens, and adjustments within the timing of oviposition, parturition and hatching. There’s quite a bit to analyze, however on a private stage, I feel my experiences underscored the significance of permitting enough time for relaxation and recuperation for everybody on the workforce and understanding the bounds of what individuals may be requested to do.
Is there something that you may be taking ahead into your future fieldwork and is there something that you simply assume extra individuals ought to know earlier than heading to the sphere?
Regardless of a number of years prior expertise, in some methods I felt under-prepared for final 12 months’s subject season – beginning in June with the lizards’ reproductive interval effectively underway, we have been eager to get sampling instantly, however I feel taking just a few days at first to take inventory on the subject web site and put together lizard packing containers, arrange tents and take stock of kit and many others. may need helped the primary few days really feel a bit much less chaotic.
Do you’ve any remaining items of knowledge or anecdotes which sum up your expertise within the subject?
A video of a weevil because it trundles alongside a fieldworker’s forearm with me explaining the Fable of Sisyphus to a subject employee within the background (video credit score: @liamswondrousworld on TikTok).
Acknowledgements
Written by John Laurence Smout, a analysis technician on the Faculty of Biodiversity, One Well being and Veterinary Drugs (SBOHVM); edited by Shennice Knight and Reward Adeyemo, first-year PhD college students at SBOHVM.
Photograph credit score for banner picture: Mikmaq, Wikimedia Commons
In case you are inside SBOHVM and want to submit a fieldwork diary, please obtain the questions from right here and comply with the directions within the doc.
