Intertidal Soundscapes of Hardened and Living Shorelines: A Case Study of Habitat Enhancement

Aquatic Conservation Marine and Freshwater Ecosystems, Journal Year: 2024, Volume and Issue: 34(3)

Published: Feb. 29, 2024

Abstract Organisms, such as fishes and invertebrates including their larval stages, listen to underwater soundscapes detect information about nearby habitats. Such may be influenced by habitat degradation or enhancement, which can lead acoustically mediated feedback loops affecting the overall ecosystem. Despite importance of sounds on ecological functioning, there have been limited studies documenting intertidal ecosystems few, if any, living shoreline soundscapes. Living shorelines would especially benefit from effects for objectives like encouraging fish invertebrate settlement. This case study used a Before‐After‐Control‐Impact design sample nekton (i.e., mobile macroinvertebrates) at construction hardened in Cedar Key, FL (USA). Diel soundscape patterns acoustic attenuation two sites were also described year following construction. In sampling, high frequency bands both dominated that season, site time day, while low band was often loud anthropogenic sound. About after installation—despite similar measured sites—the featured louder sound pressure levels compared shoreline, particularly beneficial promoting foundational species other organism These results demonstrate Gulf Mexico habitats differences even within close proximity enhance characteristics ways continued development. represents an important step better understanding relationships between structures, communities, associated well application passive monitoring improve coastal management conservation.

Language: Английский

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Temporal dynamics of acoustic diversity in managed forests

Frontiers in Ecology and Evolution, Journal Year: 2024, Volume and Issue: 12

Published: Sept. 24, 2024

Introduction In production forests, management can have cascading effects on biodiversity and ecosystem services. Acoustic diversity reflects the of vocalizing animals has also considerable recreational value for human well-being, but relationship between acoustic forest remains largely unexplored Method We recorded plots along a gradient silvicultural intensity (SMI) in three regions Germany. explored diurnal seasonal temporal dynamics index (ADI) from March to July using generalized additive mixed models (GAMMs). further investigated interrelation intensity, structural diversity, as well tree bird species richness abundance equation modeling (SEM). Results Silvicultural had significant ADI May June dawn till dusk, variance explained by SMI was low. confirmed our hypothesis that reduced due its abundance. Discussion indices provide valuable insights into how affects activity soniferous communities. discuss this indicate both changes their vocal activity. address potential implications management.

Language: Английский

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Automatic detection for bioacoustic research: a practical guide from and for biologists and computer scientists

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 17, 2024

ABSTRACT Recent years have seen a dramatic rise in the use of passive acoustic monitoring (PAM) for biological and ecological applications, corresponding increase volume data generated. However, sets are often becoming so sizable that analysing them manually is increasingly burdensome unrealistic. Fortunately, we also computing power capability machine learning algorithms, which offer possibility performing some analysis required PAM automatically. Nonetheless, field automatic detection events still its infancy biology ecology. In this review, examine trends bioacoustic their implications burgeoning amount needs to be analysed. We explore different methods other tools scanning, analysing, extracting automatically from large volumes recordings. then provide step‐by‐step practical guide using bioacoustics. One biggest challenges greater bioacoustics there gulf expertise between sciences computer science. Therefore, review first presents an overview requirements bioacoustics, intended familiarise those science background with community, followed by introduction key elements artificial intelligence biologist understand incorporate into research. building pipeline data, conclude discussion possible future directions field.

Language: Английский

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Effects of landscape and distance in automatic audio based bird species identification

The Journal of the Acoustical Society of America, Journal Year: 2023, Volume and Issue: 154(1), P. 245 - 254

Published: July 1, 2023

The present work focuses on how the landscape and distance between a bird an audio recording unit affect automatic species identification. Moreover, it is shown that identification can be improved by taking into account effects of distance. proposed method uses measurements impulse responses sound source recorder. These responses, characterizing effect landscape, measured in real environment, after which they convolved with any number recorded sounds to modify existing set recordings. demonstrated using autonomous units open field two different types forests, varying Species accuracy improves significantly when taken building classification model. sounds, but approach applicable other animal non-animal vocalizations as well.

Language: Английский

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The sound of restored soil: Measuring soil biodiversity in a forest restoration chronosequence with ecoacoustics

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Jan. 23, 2023

Abstract Forest restoration requires monitoring to assess changes in above- and below-ground communities, which is challenging due practical resource limitations. With emerging sound recording technologies, ecological acoustic survey methods—also known as ‘ecoacoustics’—are increasingly available. These provide a rapid, effective, non-intrusive means of biodiversity. Above-ground ecoacoustics widespread, but soil has yet be utilised despite its demonstrable effectiveness at detecting meso- macrofauna signals. This study applied ecoacoustic tools indices (Acoustic Complexity Index, Normalised Difference Soundscape Bioacoustic Index) measure biodiversity forest chronosequence. We hypothesised that higher complexity, diversity high-frequency low-frequency ratio would detected restored plots. collected n = 198 samples 180 ambient controlled from three recently degraded (within 10 years) (30-51 years ago) deciduous plots across monthly visits. used passive record above-ground biological sounds sampling device sound-attenuation chamber communities. found plot complexity were the not situ or samples. Moreover, we had significantly greater for soil, no such association Our results suggest potential monitor biodiversity, adding ecologist’s toolkit supporting global ecosystem recovery. Implications Practice first context, paving way more comprehensive studies applications support Soil ecology/biodiversity assessments, providing minimally intrusive, cost-effective rapid surveying tool. The methods are also relatively simple learn apply. Ecoacoustics can contribute toward overcoming profound challenge quantifying (i.e., success) interventions reinstating target species, functions so-called ‘services’ reducing disturbance.

Language: Английский

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COVID-19 shutdown revealed higher acoustic diversity and vocal activity of flagship birds in old-growth than in production forests

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 901, P. 166328 - 166328

Published: Aug. 21, 2023

Language: Английский

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VGGish-based detection of biological sound components and their spatio-temporal variations in a subtropical forest in eastern China

PeerJ, Journal Year: 2023, Volume and Issue: 11, P. e16462 - e16462

Published: Nov. 15, 2023

Passive acoustic monitoring technology is widely used to monitor the diversity of vocal animals, but question how quickly extract effective sound patterns remains a challenge due difficulty distinguishing biological sounds within multiple sources in soundscape. In this study, we address potential application VGGish model, pre-trained on Google's AudioSet dataset, for extraction features, together with an unsupervised clustering method based Gaussian mixture identify various from soundscape subtropical forest China. The results show that different biotic and abiotic components can be distinguished confounding sources. Birds insects were two primary biophony sources, their displayed distinct temporal across both diurnal monthly time frames spatial landscape. Using modeling general feature set, depicted ecosystem, which could track dynamic changes environment provide help biodiversity ecological monitoring.

Language: Английский

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Soundscape mapping: understanding regional spatial and temporal patterns of soundscapes incorporating remotely-sensed predictors and wildfire disturbance

Environmental Research Ecology, Journal Year: 2024, Volume and Issue: 3(2), P. 025002 - 025002

Published: May 15, 2024

Abstract Increased environmental threats require proper monitoring of animal communities to understand where and when changes occur. Ecoacoustic tools that quantify natural acoustic environments use a combination biophony (animal sound) geophony (wind, rain, other phenomena) represent the soundscape and, in comparison anthropophony (technological human can highlight valuable landscapes both communities. However, recording these sounds requires intensive deployment devices storage interpretation large amounts data, resulting data gaps across landscape periods which recordings are absent. Interpolating ecoacoustic metrics like biophony, geophony, anthropophony, indices bridge observations provide insight larger spatial extents during interest. Here, we seven acoustically-derived bird species richness heterogeneous composed densely urbanized, suburban, rural, protected, recently burned lands Sonoma County, California, U.S.A., explore spatiotemporal patterns measurements. Predictive models driven by land-use/land-cover, remotely-sensed vegetation structure, anthropogenic impact, climate, geomorphology, phenology variables capture daily differences with varying performance (avg. R 2 = 0.38 ± 0.11) depending on metric period-of-day interpretable sound related activity, weather phenomena, activity. We also offer case study data-driven prediction soniferous activity before (1–2 years prior) after post) wildfires our area find may depict reorganization following wildfires. This is demonstrated an upward trend 1–2 post-wildfire, particularly more severely areas. Overall, evidence importance spaceborne-lidar-derived forest phenological time series characteristics modeling upscale site map biodiversity areas without prior collection. Resulting maps identify attention occur at edge disturbances.

Language: Английский

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Vocal differences in note, sequence and great call sequence among three closely related Nomascus gibbon species

International Journal of Primatology, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 6, 2024

Abstract The vocal structure of gibbons has long been believed to be under strong genetic control and consistent with phylogeny. Gibbon vocalizations show hierarchical structures song coordination behaviors, which may have different functions convey distinct information compared basic notes. However, previous studies not at multiple levels across species. We the three Nomascus species in wild South China, namely western black gibbon ( concolor ), Cao vit N. nasutus Hainan hainanus ) note (six features four types notes), male sequence (eight features), (four overlap pattern between female songs). selected 15 recordings for each species: groups, 2006 2021), (seven 2008 2020 2021). used permuted random forest analysis test differences contribution acoustic level. construct a clustering tree, it phylogenetic relationships. found significant all except boom note. Acoustic similarity did match pre-modulated notes, suggesting that are only factor leading structures. also contributions differentiation levels. Our study suggests we need compare understand their evolution.

Language: Английский

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Improving bird abundance estimates in harvested forests with retention by limiting detection radius through sound truncation

Ornithological Applications, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 16, 2024

ABSTRACT An inherent challenge with acoustically surveying birds is that the distance at which they can be detected depends on how far their song heard. We developed a distance-based sound detection space truncation method to correct for variable sampling radii due in forested or open conditions. The was pivotal evaluating bird responses retention patches; without this methodological advancement, impact of patches songbird abundance vastly underestimated. In boreal forest, these live trees are retained regenerating harvested forests provide ecological services species adapted natural disturbances. Although we did not verify our priori assumption ground observations, findings suggest limited-distance better captures effects use forests. When evaluated using unlimited surveys, had negligible effect abundance, whereas applying highlighted importance forest birds. found early mid-seral songbirds benefited from patches, notable increases after 10 years regeneration. size ranging 0.1 1.2 ha, have linear relationship abundance. Instead, edge stemming configuration emerged as key determinants majority studied. Retention were nearest unharvested used most, compared further into harvest areas. Our research only highlights underestimated small-scale tree but also introduces significant innovation field acoustic monitoring.

Language: Английский

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