Опубликована: Янв. 1, 2021
This thesis examines the roost selection preferences of bat species present in Yugar tunnel. The aim this study is to increase knowledge bats roosting artificial structures anthropogenically modified landscape. Tunnel South-East Queensland thought be inhabited by three insectivorous bats. Little known about there, and project aimed key aspects their foraging behaviour. In doing so, population size, along with emergence return patterns, preferences.
Язык: Английский
Frontiers in Ecology and Evolution, Год журнала: 2021, Номер 9
Опубликована: Июль 30, 2021
The diversity of animal acoustic signals has evolved due to multiple ecological processes, both biotic and abiotic. At the level communities signaling animals, these processes may lead diverse outcomes, including partitioning along axes (divergent signal parameters, locations, timing). Acoustic data provides information on organization, dynamics an community, thus enables study change turnover in a non-intrusive way. In this review, we lay out how community bioacoustics (the structure dynamics), value monitoring conservation landscapes taxa. First, review concepts space, their effects communities. Next, highlight spatiotemporal is reflected structure, potential presents conservation. As passive gains popularity worldwide, propose that analytical framework promise studying response entire suites species (from insects large whales) rapid anthropogenic change.
Язык: Английский
Процитировано
34
Communications Biology, Год журнала: 2021, Номер 4(1)
Опубликована: Ноя. 10, 2021
Abstract Microphone arrays are an essential tool in the field of bioacoustics as they provide a non-intrusive way to study animal vocalizations and monitor their movement behavior. can be used for passive localization tracking sound sources while analyzing beamforming or spatial filtering emitted sound. Studying free roaming animals usually requires setting up equipment over large areas attaching device which may alter However, monitoring vocalizing through microphones, spatially distributed habitat has advantage that unrestricted/unmanipulated observed. Important insights have been achieved use microphone arrays, such convergent acoustic view echolocating bats context-dependent functions avian duets. Here we show development application flexible localize track any bio-acoustic In first experiment with hunting pallid data acquired from dense array 64 microphones revealed details bats’ echolocation beam previously unseen resolution. We also demonstrate flexibility proposed system second experiment, where different architecture allowing simultaneously several species songbirds radius 75 m. Our technology makes it possible do longer measurement campaigns larger studying changing habitats providing new conservation. The nature create enhance our understanding various fields help tackle analytics complex behaviors animals.
Язык: Английский
Процитировано
31
World energy outlook, Год журнала: 2009, Номер unknown
Опубликована: Июль 8, 2009
come from teaching and research institutions in France or abroad, public private centers.L'archive ouverte pluridisciplinaire
Язык: Английский
Процитировано
49
Methods in Ecology and Evolution, Год журнала: 2021, Номер 12(12), С. 2432 - 2444
Опубликована: Сен. 18, 2021
Abstract Bioacoustics is one of the most popular methods in bat research. Bat species are identifiable through their echolocation call features (e.g. peak frequency, duration, bandwidth) but amounts recordings to process generally require help machine learning algorithms. Yet, classifiers only developed some areas world and it may take dozens years before they available everywhere because reference calls still lacking for numerous species. Our goal was develop a universal classifier that would classify sonotypes according shape frequency. To achieve this, we first defined eight sonotype categories cover all shapes worldwide. We then trained using random forest decision trees with database 1,154,835 labelled sound events containing non‐bat sounds from four continents. After classification, group detected probability scores predicted category tested performance our on different set originating five Depending tested, (area under ROC curve) ranged between 0.77 0.99 low‐quality (SNR < 25 dB). Performance 0.89 1 middle‐ or high‐quality ≥ The feeding buzz classification 0.93 0.98 depending SNR. not social calls; majority them were classified as sonotype. an open data format can be used by anyone study bats around world. It spot acoustically described which developed, even detect yet. grouping frequency describe communities compare composition acoustic niches across time space. This allows monitoring assessment conservation issues any region
Язык: Английский
Процитировано
21
Frontiers in Ecology and Evolution, Год журнала: 2022, Номер 10
Опубликована: Дек. 9, 2022
Introduction Flight and echolocation are two crucial behaviors associated with niche expansion in bats. Previous researches have attempted to explain the interspecific divergence flight morphology vocalizations some bat groups from perspective of foraging ecology. However, relationship between wing bats remains obscure, especially a phylogenetic context. Objectives Here, we aimed assess correlated evolution calls within comparative framework. Methods We integrated information on search-phrase call duration, peak frequency, relative loading, aspect ratio, guilds for 152 species belonging 15 families. quantified association among morphology, parameters, using phylogeny-based analyses. Results Our analyses revealed that parameters depended families exhibited marked signal. Peak frequency was negatively loading ratio. Call duration positively ratio open-space aerial foragers, edge-space trawling narrow-space gleaning foragers. Wing were predicted by guilds. Conclusion These results demonstrate adaptive response ecology has shaped findings expand current knowledge regarding link order Chiroptera.
Язык: Английский
Процитировано
12
Proceedings of the Royal Society B Biological Sciences, Год журнала: 2023, Номер 290(1995)
Опубликована: Март 15, 2023
With the ever-increasing dependency on electric power, electrical grid networks are expanding worldwide. Bats exhibit a wide diversity of foraging and flight behaviours, their sensitivity to anthropogenic stressors suggests this group is very likely be affected by power lines in myriad ways. Yet effects bats remains unknown. Here we assessed responses insectivorous high voltage (VHVPL; greater than 220 kV). We implemented paired sampling design monitored acoustically at 25 pairs, one pair consisting forest edge near VHVPL matched with control edge. Relative humidity mediates bats: detected bat attraction relative levels avoidance low levels. argue that former could explained insect light emitted owing corona discharges while latter may physical presence pylons/cables height and/or because electromagnetic fields. Our work highlights response habitats, providing new insight into interactions between biodiversity.
Язык: Английский
Процитировано
7
Agriculture Ecosystems & Environment, Год журнала: 2021, Номер 319, С. 107494 - 107494
Опубликована: Май 28, 2021
Язык: Английский
Процитировано
16
Landscape and Urban Planning, Год журнала: 2022, Номер 221, С. 104353 - 104353
Опубликована: Янв. 20, 2022
Язык: Английский
Процитировано
11
Landscape Ecology, Год журнала: 2019, Номер 34(12), С. 2869 - 2881
Опубликована: Окт. 30, 2019
Язык: Английский
Процитировано
17
Bioacoustics, Год журнала: 2022, Номер 32(1), С. 17 - 32
Опубликована: Апрель 1, 2022
Surveying biodiversity using bioacoustics has become increasingly common worldwide, although it is mostly concentrated in temperate regions. The variety of automatic recorders, the development free analytical tools, and several acoustic indices have increased number studies worldwide. bioacoustic approach essential for application poorly surveyed regions with pressure human activities, such as Brazilian cerrado. We tested association four bat diversity metrics (taxonomic, phylogenetic, two functional metrics, being one based on morphological other acoustical traits, five commonly used indices. a dataset 608.4 h obtained from 30 sampling points three protected areas Central Brazil. Using Flexible Discriminant Analysis, we identified 21 species our subsequent analysis. Entropy index was best predictor taxonomic phylogenetic diversity, whereas Acoustic Complexity Index diversity. concluded that are suitable estimating insectivorous bats However, registered only part community, can vary seasonally masking real study area; thus, this method should be parsimoniously.
Язык: Английский
Процитировано
7