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Iskalni niz: "avtor" (Jernej Polajnar) .

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1.
Unconventional masking : even spectrally non-overlapping noise impairs insect vibrational communication
Rok Janža, Nataša Stritih Peljhan, Aleš Škorjanc, Jernej Polajnar, Meta Virant-Doberlet, 2024, zaključena znanstvena zbirka raziskovalnih podatkov

Povzetek: A dataset accompanying the publication Janža R. et al. (2024): Vibrational noise disrupts Nezara viridula communication, irrespective of spectral overlap. Communications Biology 7:1533, https://doi.org/10.1038/s42003-024-07185-3. Contains raw data (where appropriate) and data extracted from audio/video files, and custom code for processing in Matlab (*.m files) and R (*.rmd file)[.] Original audio and video recordings from which measurements were made are available on request from the authors.
Ključne besede: biotremology, vibrational noise, bed bugs, sexual behavior, data
Objavljeno v DiRROS: 27.10.2025; Ogledov: 200; Prenosov: 313
.zip Celotno besedilo (616,24 MB)
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2.
Vibrational signal types recorded in two grassland habitats : version v1
Juan José López Díez, Rok Šturm, Jernej Polajnar, Meta Virant-Doberlet, 2025, zaključena znanstvena zbirka raziskovalnih podatkov

Povzetek: A dataset accompanying the publication López Díez J.J. et al. (2025): Spatial and temporal variation in vibroscape composition in two grassland habitats. Scientific Reports 15: 21910, https://doi.org/10.1101/2024.07.03.601657[.] Contains audio clips of identified Vibrational Signal Types (VSTs) extracted from vibroscape recordings made in Bistra (Central Slovenia) and Krkavče (SW Slovenia). Original vibroscape recordings from which the VSTs were extracted are available on request from the authors.
Ključne besede: biotremology, ecotremology, vibroscape, vibrational environments, vibrational comunications, vibrational communities, data
Objavljeno v DiRROS: 27.10.2025; Ogledov: 143; Prenosov: 101
.zip Celotno besedilo (29,03 MB)
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3.
Vibrational signals produced by wing buzzing in Cacopsylla pyrisuga males (Hemiptera: Psyllidae) : version v1
Jernej Polajnar, Elizaveta Kvinikadze, Adam W. Harley, Igor Malenovský, 2023, zaključena znanstvena zbirka raziskovalnih podatkov

Povzetek: High-speed camera (video files) and laser vibrometer (audio files) recordings of Cacopsylla pyrisuga males producing vibrational signals - a dataset accompanying the publication Polajnar J., Kvinikadze E., Harley A.W., Malenovský I. (2024) Wing buzzing as a mechanism for generating vibrational signals in psyllids (Hemiptera: Psylloidea). Insect Science. See the publication for details about the methodology used. The dataset additionaly includes tracked points at wing and abdomen tips from two videos, and an R script with instructions to read this data.
Ključne besede: biotremology, vibrational signals, jumping plant-lice, tremulation, data
Objavljeno v DiRROS: 27.10.2025; Ogledov: 179; Prenosov: 68
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4.
Spatial and temporal variation in vibroscape composition in two grassland habitats
Juan José López Díez, Rok Šturm, Jernej Polajnar, Meta Virant-Doberlet, 2025, izvirni znanstveni članek

Povzetek: Substrate-borne vibrational signaling is one of the oldest and taxonomically widespread forms of animal communication. For many animals the natural vibrational environment (vibroscape) is an essential source of information underlying their behavioral decisions; however, the structure and dynamics of vibroscape composition of the natural habitats are largely unexplored. We studied vibroscape composition in a eutrophic lowland hay meadow and a sub-Mediterranean dry karst grassland. The results obtained by simultaneous, multi-channel recordings showed that vibroscape composition changes throughout the day and from day to day, differs between plant species, depends on the spatial position of the plant within the habitat and is also influenced by environmental parameters. The results highlight the unpredictability and high variability of the vibrational environment encountered by plant-dwelling insects, and the complexity in implementing biodiversity monitoring based on vibroscape composition.
Ključne besede: biotremology, ecotremology, vibroscape, vibrational communication, vibrational community, environmental factors, zoology, ecology
Objavljeno v DiRROS: 02.07.2025; Ogledov: 460; Prenosov: 386
.pdf Celotno besedilo (2,59 MB)
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5.
The freshwater sounds archive
Jack A. Greenhalgh, Mauricio S. Akmentins, Martin Boullhesen, Gabriel Lourenço Brejão, Jacob C. Bowman, Jernej Polajnar, David Stanković, 2025, drugi sestavni deli

Povzetek: Freshwater ecosystems are full of underwater sounds produced by amphibians, aquatic arthropods, reptiles, plants, fishes, and methane bubbles escaping from the sediment. Although much headway has been made in recent years investigating the overall soundscapes of various freshwater ecosystems around the world, there remains a significant knowledge gap in our collective inability to accurately and reliably link recorded sounds with the species that produced them. Here, we present The Freshwater Sounds Archive, a new global initiative, which seeks to address this knowledge gap by collating species-specific freshwater sound recordings into a publicly available database. By means of metadata collection, we also present a snapshot of the species studied, the recording equipment, and recording parameters used by freshwater ecoacousticians globally. In total, 61 entries were submitted to the archive between the 4th of March 2023 and the 30th of April 2025, representing 16 countries and 6 continents. The most numerous taxonomic group was arthropods (29 entries), followed by fishes (14 entries), amphibians (10 entries), macrophytes (7 entries), and a freshwater mollusk (1 entry). The majority of the submissions were from European countries (27 entries), of which the United Kingdom was the most represented with 14 entries. The next most represented region was North America (11 entries), followed by South America (8 entries), Oceania and Asia (5 entries each), Africa (3 entries), and the Middle East and Central America with 1 entry each. The global south, polar regions, and areas with an elevation >500 m (asl) were underrepresented. The field of freshwater ecoacoustics to date has largely focused on the analysis of ‘sound types’ due to a current lack of knowledge of species-specific sounds. The Freshwater Sounds Archive presents an opportunity to move beyond the ‘sound type’ approach, and towards an approach with higher taxonomic resolution, ultimately resulting in species-specific descriptions. Furthermore, The Freshwater Sounds Archive will provide freshwater ecoacousticians with one of the main tools required to start creating annotated training datasets for machine learning models from soundscape recordings by referring to known species sounds present in the archive. In the long-term, this will result in the automatic detection and classification of species-specific freshwater sounds from soundscape recordings, such as indicator, invasive, and endangered species.
Ključne besede: freshwater ecoacoustics, biological archive, biomonitoring, passive acoustic monitoring
Objavljeno v DiRROS: 02.07.2025; Ogledov: 425; Prenosov: 269
.pdf Celotno besedilo (1,25 MB)
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6.
Palomena prasina (Hemiptera: Pentatomidae) vibratory signals and their tuning with plant substrates
Jernej Polajnar, Andreja Kavčič, Alenka Žunič Kosi, Andrej Čokl, 2013, izvirni znanstveni članek

Povzetek: Palomena prasina is interesting for the study of vibrational communication within the Pentatomid subfamily Pentatominae, because its host range is limited to woody plants, unlike the better known Nezara viridula, whose vibrational communication is commonly used as a model for the whole family. The vibrational repertoire of P. prasina was described several decades ago and is redescribed in this paper using modern methods for non-contact vibration recording. Additionally, we hypothesized that this species has retained the capacity for signal frequency variation necessary for tuning to resonance properties of various host plants of Pentatominae, but if the signals are emited in the absence of mechanical feedback, they are tuned more specifically to their native acoustic environment – woody plants. By recording live bugs signalling on different substrates and comparing spectral properties of their signals among substrates, we found that there is a match between the signals emitted on a woody branch and those emitted on a non-resonant surface, while spectral properties of signals emitted on herbaceous plants differ. Our findings provide evidence in support of the signal tuning hypothesis and shed further light on the crucial role of substrate in vibrational communication of insects.
Ključne besede: vibrational communication, signal propagation, frequency characteristics
Objavljeno v DiRROS: 12.03.2025; Ogledov: 570; Prenosov: 405
.pdf Celotno besedilo (767,16 KB)
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7.
25 let revije Natura Sloveniae
Rok Kostanjšek, Nataša Mori, Matjaž Bedjanič, Maarten De Groot, Nina Šajna, Jernej Polajnar, Maja Zagmajster, 2023, drugi znanstveni članki

Povzetek: Prispevek predstavi zgodovino in razvoj revije Natura Sloveniaev 25 letih izhajanja, od 1999 do 2023. Izpostavljeni so začetki revije, ozadje in namen revije ter kratka analiza števila prispevkov, avtorjev in taksonomskih skupin, ki jih prispevki naslavljajo, vključno s pregledom odmevnosti izbranih prispevkov. V 25-letih je bilo v reviji objavljenih 286 prispevkov, ki jih je pripravilo 320avtorjev. Prispevki se osredotočajo na območje Slovenije in največkrat predstavljajo razširjenost vrst, objavljeni pa so tudi zapisi za druga območja iz osrednje in jugovzhodne Evrope, ki obravnavajo širše tematike povezane z ekologijo in naravovarstvom. Visoko citiranost in znanstveno odmevnost dosegajo zlasti prispevki, ki predstavljajo nacionalne sezname vrst ali poročajo o novih ali prvih opažanjih vrst v državi. Velika večina prispevkov je osredotočena na posamezne taksone, najpogosteje žuželke z redovoma metuljev in kačjih pastirjev. V 25. letu izhajanja prehaja revija v so-izdajanju Biotehniške fakultete Univerze v Ljubljani in Nacionalnega inštituta za biologijo v okvir Založbe Univerze v Ljubljani in prične uporabljati nov portal za oddajo in obravnavo rokopisov. V tem letu tudi prvič izide tretja, tematska številka revije. Po četrt stoletja rednega izhajanja zaseda Natura Sloveniae pomembno mesto v slovenski znanstveni periodiki s področja biologije in nadaljuje svoje poslanstvo objavljanja izvirnih znanstvenih prispevkov s področja favnističnih, florističnih, biogeografskih, biodiverzitetnih in ekoloških raziskav v osrednji in jugovzhodni Evropi, ter vzpodbujanja mladih piscev k objavi svojih terenskih opažanj.
Ključne besede: Slovenija, floristika, favnistika, biodiverziteta, ekologija, naravovarstvo, terenska biologija, izvirni znanstveni prispevki
Objavljeno v DiRROS: 04.03.2025; Ogledov: 653; Prenosov: 362
.pdf Celotno besedilo (918,81 KB)
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8.
Functional diversity of vibrational signaling systems in insects
Meta Virant-Doberlet, Nataša Stritih Peljhan, Alenka Žunič Kosi, Jernej Polajnar, 2023, pregledni znanstveni članek

Povzetek: Communication by substrate-borne mechanical waves is widespread in insects. The specifics of vibrational communication are related to heterogeneous natural substrates that strongly influence signal transmission. Insects generate vibrational signals primarily by tremulation, drumming, stridulation, and tymbalation, most commonly during sexual behavior but also in agonistic, social, and mutualistic as well as defense interactions and as part of foraging strategies. Vibrational signals are often part of multimodal communication. Sensilla and organs detecting substrate vibration show great diversity and primarily occur in insect legs to optimize sensitivity and directionality. In the natural environment, signals from heterospecifics, as well as social and enemy interactions within vibrational communication networks, influence signaling and behavioral strategies. The exploitation of substrate-borne vibrational signaling offers a promising application for behavioral manipulation in pest control.
Ključne besede: biotremology, substrate-borne communication, signaling context, vibrosensory evolution, multimodal signaling, pest management, insects, zoology
Objavljeno v DiRROS: 04.03.2025; Ogledov: 755; Prenosov: 478
.pdf Celotno besedilo (131,12 KB)
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9.
Vibrational noise disrupts Nezara viridula communication, irrespective of spectral overlap
Rok Janža, Nataša Stritih Peljhan, Aleš Škorjanc, Jernej Polajnar, Meta Virant-Doberlet, 2024, izvirni znanstveni članek

Povzetek: Insects rely on substrate vibrations in numerous intra- and interspecific interactions. Yet, our knowledge of noise impact in this modality lags behind that in audition, limiting our understanding of how anthropogenic noise affects insect communities. Auditory research has linked impaired signal perception in noise (i.e., masking) to spectral overlap. We investigated the impact of noise with different spectral compositions on the vibrational communication of the stink bug Nezara viridula, examining courtship behaviour and signal representation by sensory neurons. We found negative effects of vibrational noise regardless of spectral overlap, challenging common expectations. Noise impaired the ability of males to recognize the female signal and localise its source: overlapping noise decreased sensitivity of receptor neurons to the signal and disrupted signal frequency encoding by phase-locking units, while non-overlapping noise only affected frequency encoding. Modelling neuronal spike triggering in sensory neurons linked disrupted frequency encoding to interference-induced alterations of the signal waveform. These alterations also affected time delays between signal arrivals to different legs, crucial for localisation. Our study thus unveils a new masking mechanism, potentially unique to insect vibrosensory systems. The findings highlight the higher vulnerability of vibration-mediated behaviour to noise, with implications for insect interactions in natural and anthropogenically altered environments.
Ključne besede: biotremology, vibrations, noise, communication, neurons, masking, entomology, neurobiology
Objavljeno v DiRROS: 21.11.2024; Ogledov: 832; Prenosov: 2838
.pdf Celotno besedilo (2,25 MB)
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10.
Pestrost opraševalcev za zanesljivo pridelavo hrane
Danilo Bevk, 2018, druge monografije in druga zaključena dela

Povzetek: Življenjsko okolje opraševalcev se je zelo spremenilo. Obilno gnojeni, zgodaj in pogosto košeni travniki ne zacvejo in zato opraševalcem ne zagotavljajo hrane. Obdelovalni stroji uničijo veliko gnezd čmrljev. Živih mej, kjer bi bila gnezda na varnem, skoraj ni več. Čebele samotarke so nekdaj gnezdile v slamnah strehah in luknjah v lesu, ki je bil glaven gradbeni material. Negaven je tudi vpliv prekomerne in nepravilne uporabe pescidov.
Ključne besede: opraševalci, pridelava hrane
Objavljeno v DiRROS: 04.09.2024; Ogledov: 817; Prenosov: 412
.pdf Celotno besedilo (340,52 KB)
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