Urban effects on timing and variability of diel activity differ across passerine species and seasons

Journal of Animal Ecology, Journal Year: 2025, Volume and Issue: unknown

Published: April 9, 2025

Abstract Life on Earth is adapted to rhythmic cycles in environmental conditions throughout the day and year via diel patterns of behavioural activity. Urban can disrupt such rhythms However, most studies so far have investigated urban effects activity single species a season. Additionally, we know little about level between‐ within‐individual variation non‐urban populations, whether they differ. Here, use automated radio telemetry record daily six passerine (blackbird, robin, great tit, blue dunnock chaffinch) across two forest populations during pre‐breeding post‐breeding seasons. We investigate five activity‐related traits: time onset, end, duration diurnal activity, nocturnal employ statistical tools that allow us estimate mean phenotypic values but also quantify versus differences between‐individual variation. found strongest onset blackbirds robins both pre‐ seasons: blackbird robin started their earlier than counterparts. did not find this effect other species. all showed higher levels was offset by lower suggesting birds may incur energetic demands. Lastly, our analysis revealed large consistent timing traits. Onset end were more variable between individuals, implying population synchronisation, within less behaviour, Conversely, birds. conclude that, for birds, life associated with rest, consistency synchronicity, sizes depend year. Our results warn against generalising urbanisation call future understand mechanisms behind seasonal differences.

Language: Английский

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Determinants of Environmental Pollution Awareness Among University Students: A Case Study of Atatürk University

Türk Tarım ve Doğa Bilimleri Dergisi, Journal Year: 2025, Volume and Issue: 12(2), P. 501 - 509

Published: April 16, 2025

Environmental pollution has adverse effects on living organisms and contributes to a wide range of health issues in individuals. Given this reality, enhancing public awareness knowledge regarding environmental is utmost importance. Accordingly, study aims identify the factors influencing levels among university students. The primary objective determine which components air, radiation, noise students are most aware concerned about. Achieving required conducting survey through face-to-face interviews with 400 enrolled various departments at Atatürk University Erzurum, Turkey. was designed collect data for an academic examine extent students’ understanding influenced by sociodemographic behavioral factors, including gender, household education level, mother’s employment status, regular breakfast exercise habits, interest social sciences, daily television consumption. findings indicate that these significantly shape pollution. Results from logistic regression analysis reveal each variables exerts statistically significant impact when considered simultaneously. Based study’s conclusions, it recommended family members serve as initiators education. Furthermore, local governments should implement systematic consistent educational programs addressing Additionally, media holds potential disseminating information effectively, thereby playing crucial role fostering consciousness..

Language: Английский

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Illuminated nights accelerate the migration‐linked phenology in a passerine finch redheaded bunting

Photochemistry and Photobiology, Journal Year: 2025, Volume and Issue: unknown

Published: April 25, 2025

Abstract The excessive use of artificial light is altering the natural light–dark cycles, consequently impacting animal behavior and physiology. Dim at night (dLAN) can disrupt migratory patterns, alter hormone levels, impact breeding success in birds. present research aims to address effects dLAN on metabolic reproductive tissues redheaded bunting ( Emberiza bruniceps ). For this, buntings under short winter‐like days (10L:14D) were exposed either dark nights D = 0.00014 W/m 2 ) or 0.058 ), their locomotor activity, body mass, fat score, food intake, testicular volume, plasma testosterone levels measured. histological architecture muscle, intestine, testis, liver was assessed. Birds confined activity daytime only, whereas group showed nocturnal initiated Zugunruhe (nighttime restlessness). volume significantly increased dLAN. Histomorphometry revealed muscle width, epithelium thickness, lumen diameter proximal distal muscularis thickness hepatic lipid droplet size, decreased villi length intestinal Further, also Our results suggest that induce migration‐linked phenotypes even non‐stimulatory leading mistimed seasonal activities.

Language: Английский

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Bird community responses to urbanization and vegetation parameters across the city of Salzburg, Austria

Urban Ecosystems, Journal Year: 2025, Volume and Issue: 28(4)

Published: May 28, 2025

Language: Английский

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Anthropogenic noise and light pollution decrease the repeatability of activity patterns and dampen expression of chronotypes in a free-living songbird

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 954, P. 176552 - 176552

Published: Sept. 30, 2024

Language: Английский

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Natural Differences between the Dawn and Dusk Choruses of a Neotropical Songbird and Their Relationship to Its Response to Urbanization

Published: Jan. 11, 2024

Urbanization in one of the more important phenomena affecting biodiversity Anthropocene. Some organisms can cope with urban challenges, and changes birds’ acoustic communication have been widely studied. Although timing daily organization previously reported, there is a significant gap regarding possible variations song structure between dawn dusk choruses. Considering that urbanization potentially imposes different soundscapes for choruses, we postulate two hypotheses: i) are “natural” parameters ii) such within city will vary response to noise. We studied extra-urban populations Chiguanco Thrush La Paz, Bolivia, measuring their choruses: length, sound pressure, minimum, maximum, range dominant frequency, proportion songs produced. The results support our natural conditions were louder larger bandwidths, city, frequency entire rises along increasing amplitude. Understanding structural choruses could allow better interpretation how some bird species challenges.

Language: Английский

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Elevated vitamin D levels in diurnally-active female fruit bats

Heliyon, Journal Year: 2024, Volume and Issue: 10(20), P. e38973 - e38973

Published: Oct. 1, 2024

Language: Английский

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Natural Patterns in the Dawn and Dusk Choruses of a Neotropical Songbird in Relation to an Urban Sound Environment

Animals, Journal Year: 2024, Volume and Issue: 14(4), P. 646 - 646

Published: Feb. 17, 2024

Urbanization is one of the more important phenomena affecting biodiversity in Anthropocene. Some organisms can cope with urban challenges, and changes birds’ acoustic communication have been widely studied. Although timing daily organization previously reported, there a significant gap regarding possible variations song structure between dawn dusk choruses. Considering that urbanization imposes different soundscapes for choruses, we postulate two hypotheses: (i) are parameters (ii) such within city will vary response to noise. We studied extra-urban populations Chiguanco Thrush La Paz, Bolivia, measuring choruses: length; sound pressure level; minimum, maximum, range dominant frequency; number songs per individual. The results support our were songs, louder had larger band widths at than populations. Urban Thrushes sing less, frequency entire rises, amplitude increases as compared Thrushes. Understanding choruses could allow better interpretation how some bird species challenges.

Language: Английский

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Noise pollution does not significantly affect distributions of red-wattled lapwing Vanellus indicus and pied king-fisher Ceryle rudis in a riverine ecosystem

Ornithology Research, Journal Year: 2024, Volume and Issue: 32(2), P. 144 - 151

Published: April 29, 2024

Language: Английский

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Using unstructured crowd-sourced data to evaluate urban tolerance of terrestrial native animal species within a California Mega-City

PLoS ONE, Journal Year: 2024, Volume and Issue: 19(5), P. e0295476 - e0295476

Published: May 29, 2024

In response to biodiversity loss and biotic community homogenization in urbanized landscapes, there are increasing efforts conserve increase within urban areas. Accordingly, around the world, previously extirpated species (re)colonizing otherwise infiltrating while other disappearing from these landscapes. Tracking occurrence of traditionally intolerant tolerant should be a management goal areas, but we generally lack tools study this phenomenon. To address gap, first used species' occurrences iNaturalist, large collaborative dataset observations, calculate an association index (UAI) for 967 native animal that occur city Los Angeles. On average, was negatively associated with our composite measure intensity, exception snails slugs, which instead more frequently areas increased intensity. Next, assessed 8,348 0.25 x mile grids across City Angeles determine average grid-level UAI scores (i.e., summary UAIs present grid cell, term Community Urban Tolerance Index or CUTI). We found higher intensity host species, also taxonomic groups differ their aggregate tolerance spatial patterns vary between groups. The framework established here has been designed iteratively reevaluated by managers order track progress initiatives preserve encourage biodiversity, can rescaled sample different regions cities altogether provide valuable tool globally.

Language: Английский

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