Using citizen science to test for acoustic niche partitioning in frogs

Scientific Reports, Journal Year: 2022, Volume and Issue: 12(1)

Published: Feb. 14, 2022

Abstract The acoustic niche hypothesis proposes that to avoid interference with breeding signals, vocal species should evolve partition space, minimising similarity co-occurring signals. Tests of the are typically conducted using a single assemblage, mixed outcomes, but if process is evolutionarily important, pattern reduced competition emerge, on average, over many communities. Using continental-scale dataset derived from audio recordings collected by citizen scientists, we show frogs do space. Differences in calls were predominately caused differences spectral, rather than temporal, features. Specifically, 90% frequency bandwidths observed frog assemblages overlapped less expected, and there was greater distance between dominant frequencies expected. To our knowledge, this study first use null models test for partitioning large geographic scale.

Language: Английский

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Environmental influences on chorusing patterns in an Australian tropical savanna frog community

Ecosphere, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 1, 2025

Abstract Ecoacoustic methods provide opportunities for ecological studies of vocalizing species within the context natural habitats and communities in which they occur. Continuous acoustic monitoring assemblages can reveal patterns breeding phenology, behavior, interactions. We used long‐duration false‐color spectrograms derived from indices to detect nightly chorusing a community anurans tropical savanna north Queensland. described each over two wet seasons at three sites, conditional random forest analysis investigate influence various environmental factors. Frogs these form multispecies aggregations water bodies during periods when males large choruses attract females. The revealed have different periods, could be broadly categorized as explosive or prolonged. While rain events were often trigger commencement period, responded differently conditions. Choruses occurred only on night of, after, first high rainfall event season. prolonged showed idiosyncratic chorusing, generally consistent across sites. Fine‐grained data relationship with conditions allow us understand detectability presence, absence, frog habitats, baseline management programs.

Language: Английский

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Acoustic Niche Partitioning in a Bird Assembly in Caatinga, Northeastern Brazil

Austral Ecology, Journal Year: 2025, Volume and Issue: 50(2)

Published: Feb. 1, 2025

ABSTRACT We investigated vocal adjustment andacoustic niche partitioning in a bird assemblage the Caatinga based on Acoustic Niche Hypothesis and Species Recognition Hypothesis. conducted 72 recordings of 3‐min duration along two transects 1 km length, between July 2022 February 2023. Each transect was divided into six points, spaced 200 m apart. analysed spectral temporal overlap (Pianka index) 15 vocally dominant species tested significance using null models 1000 repetitions Randomization Algorithm 3. Phylogenetic distances were estimated from 2500 phylogenies to assess their correlation with acoustic overlap, Generalised Linear Models partial Mantel test. Twenty‐five pairs exhibited high (> 0.6), whereas all showed low (< 0.4). The analysis suggested that observed (0.322) lower than expected by chance (0.261), indicating significant difference [Standardised Effect Size (SES) = 7.162, p < 1]. values, (0.097) being slightly (0.111), but no (SES −6.752, > 1). Our results revealed (Estimate −0.0059, t −0.286, 0.766) or phylogenetic distance −0.0001, −0.966, 0.336) 0.00002, 0.125, 0.901) overlap. There also controlled ( r −0.02712, 0.553). evidence negative association among species. relationships did not explain patterns. Therefore, it is possible avoidance actively occurs regardless other factors, such as

Language: Английский

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Hide and seek in time and space: Spatiotemporal segregation between snow leopard and its prey in Northern Pakistan

Global Ecology and Conservation, Journal Year: 2025, Volume and Issue: 59, P. e03543 - e03543

Published: March 22, 2025

Language: Английский

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Spatial Overlap and Behavioral Interactions Among Four Habronattus Jumping Spider Species in a Mixed‐Species Assemblage

Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(4)

Published: March 30, 2025

ABSTRACT Within mixed‐species assemblages, closely related species may face interspecific competition and reproductive interference. Species evolve adaptations to outcompete or coexist, though most assemblages likely exist in a nonequilibrium state between the two extremes. Understanding dynamics potentially syntopic requires careful studies conducted at fine spatial resolution, an especially important consideration for small invertebrate animals. We characterized interactions within assemblage consisting of four Habronattus jumping spiders, genus that can be found where males are known indiscriminately court conspecific heterospecific females alike. Through detailed focal observations, we evaluated how overlap their occurrence, temporal light environment, movement level, behavioral interactions, including courtship. assessed whether observed occurred more frequently than random chance by comparing data network reference models. Our findings revealed overlaps across all variables, which indicate shared environmental requirements amongst potential However, there was notable shift H. calcaratus coecatus . decorus showed some divergence occurrence environment phylogenetic signal associated with its distinct courtship display. Additionally, sex differences levels could represent selection male “scramble competition” strategy. Lastly, courtship, were but less often chance, as represented Altogether, our suggest individuals this engaged level interference, mechanisms mitigate these pressures. This study establishes ecological foundation investigate possible adaptive responses assemblage, such character displacement sensory drive.

Language: Английский

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Depth-dependent dynamics and acoustic niche partitioning of fish sounds in mesophotic coral reefs

Estuarine Coastal and Shelf Science, Journal Year: 2025, Volume and Issue: unknown, P. 109336 - 109336

Published: May 1, 2025

Language: Английский

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Isochrony in barks of Cape fur seal (Arctocephalus pusillus pusillus) pups and adults

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(3)

Published: March 1, 2024

Animal vocal communication often relies on call sequences. The temporal patterns of such sequences can be adjusted to other callers, follow complex rhythmic structures or exhibit a metronome-like pattern (i.e., isochronous). How regular are the in animal signals, and what influences their precision? If present, rhythms already there early ontogeny? Here, we describe an exploratory study Cape fur seal (

Language: Английский

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Competition for acoustic space in a temperate-forest bird community

Behavioral Ecology, Journal Year: 2023, Volume and Issue: 34(6), P. 1043 - 1054

Published: Sept. 23, 2023

Abstract Animals that communicate by acoustic signaling share a common environment. Birds are particularly vocal examples, using wide repertoire of broadcast signals for mate attraction and territorial defense. However, interference caused sounds overlap in frequency time can disrupt signal detection reduce reproductive success. Here, we investigated competition avoidance mechanisms used the bird community inhabiting primeval lowland temperate forest Białowieża, Eastern Poland. We recorded dawn chorus at 84 locations early late spring calculated dissimilarity indices to examine how species with greater song similarities use spatial temporal partitioning avoid space throughout breeding season. The changed its day did not when looked recording over whole study period, but they seasonal context, more acoustically different than expected chance same point part Our results also indicate daily niche may only occur certain times before sunrise, no evidence large-scale between vocalizing during 1-min recordings daytime. These contribute toward our understanding evolution communication highlight strategies employed improve their transmission.

Language: Английский

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Convergent behavioral strategies and neural computations during vocal turn-taking across diverse species

Current Opinion in Neurobiology, Journal Year: 2022, Volume and Issue: 73, P. 102529 - 102529

Published: March 31, 2022

Language: Английский

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Evidence for acoustic niche partitioning depends on the temporal scale in two sympatric Bornean hornbill species

Biotropica, Journal Year: 2023, Volume and Issue: 55(2), P. 517 - 528

Published: Feb. 15, 2023

Abstract Understanding niche partitioning of closely related sympatric species is a fundamental goal in ecology. Acoustic communication space can be considered resource, and the acoustic hypothesis posits that competition between may lead to space. Here, we compare calling behavior two Bornean hornbill species—the rhinoceros ( Buceros ) helmeted Rhinoplax vigil )—to test for evidence partitioning. Both emit calls heard over many kilometers have similar habitat preferences which predicted result interspecific competition. We collected data on populations both using 10 autonomous recording units Danum Valley Conservation Area, Sabah, Malaysia. found there was substantial spectral overlap species, indicating potential To partitioning, investigated spatial temporal patterns each species. hornbills were strictly diurnal called throughout day, equally likely detect at our recorders. did not find avoidance relatively coarse timescale when divided dataset into 1 h bins, but finer used null models observed duration overlapping expected amount due chance. Malay available with online material.

Language: Английский

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