Seasonality and interspecific temporal partitioning in a semiarid grassland bat assemblage of northwestern India

Mohan, Ram; Chhaya, Vaibhav; Krishnan, Anand

doi:10.1016/j.jaridenv.2022.104818

Cited by 2 publications

(3 citation statements)

References 61 publications

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“…Another plausible explanation is that the fieldwork time window in the previous research covered more months within a year than ours. Seasonal variations of diel activity patterns due to changing resources have been found in several studies [25,29]. The spatial scale difference between our study and previous research might also explain the difference.…”

Section: Discussioncontrasting

confidence: 60%

“…Within a night, different species are active at different times to partition the niche, forming species-specific diel activity patterns [24]. Variations of a species' diel activity patterns may occur when bats respond to changes or disturbances in the environment, such as seasonality, anthropogenic light, or noises [25][26][27]. When a species' diel activity patterns vary across different habitats, it indicates differences in how bats use these habitats and what resources each habitat might provide [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

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Conservation Value to Bats: Assessing Multiple Functional Habitats in a Nature Preserve at the Urban-Agricultural Interface via Temporal Ecology

Li,

White

2024

Sustainability

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In grassland ecosystems, agriculture and urbanization are two main anthropogenic disturbances to native fauna. Nature preserves at the urban-agricultural interface may include diverse vegetation habitats, providing opportunities for native fauna. Limited research has examined the conservation value of such preserves to bats. We examined bat activity patterns at multiple temporal scales at Glacier Creek Preserve in Omaha, Nebraska, USA, between 2018 and 2020 via acoustic monitoring to identify what functional habitats it might provide to bats. We placed bat detectors along the forest edge and in the open, restored native prairies and open agricultural fields. A total of nine species were recorded at the preserve, including the endangered Myotis septentrionalis. Foraging activities were recorded for six species. The edge habitat had higher overall acoustic activities for three species (Eptesicus fuscus, Lasiurus borealis, and Lasiurus cinereus) and a higher proportion of foraging activities for two species (Lasiurus borealis and Lasiurus cinereus) than the open habitat. Lasiurus cinereus displayed activity peaks early at night, whereas Lasiurus borealis had activity peaks late. Results suggest that a medium-sized nature preserve at the urban-agricultural interface can provide roosts, commuting corridors, and foraging grounds for different bats. The conservation value of such nature preserves should not be overlooked.

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Section: Discussioncontrasting

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Conservation Value to Bats: Assessing Multiple Functional Habitats in a Nature Preserve at the Urban-Agricultural Interface via Temporal Ecology

Li,

White

2024

Sustainability

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“…Apart from partitioning in acoustic signal space, animals also employ different behavioral strategies to avoid masking interference, especially in complex habitats like tropical evergreen and dry forests as well as open habitats and deserts. For example, there is evidence of different calling perches to potentially avoid interspecific masking (Diwakar & Balakrishnan 2007;Chitnis et al 2020), temporal partitioning either by calling at different times in spectrally similar species (Planqué & Slabbekoorn 2008;Mohan et al 2022;Chronister et al 2023;Kennedy et al 2023) or finer-scale note-level temporal partitioning. Taken together, these suggest the diverse possibilities employed by animals to avoid masking interference beyond spectral partitioning.…”

Section: Introductionmentioning

confidence: 99%

Signal space overlap in sympatric drongos (Aves: Dicruridae) and spatial segregation in a South Asian tropical rainforest

Lahiri,

Sonowal

2023

Preprint

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A diverse array of animals use a multidimensional acoustic space as a primary source of communication, especially in habitats where other signals are limited. However, in complex habitats, species must contend with other co-occurring species to send their message in a backdrop of ambient noise. This is exacerbated in closely related species that occur in sympatry, and we do not know how species that learn their vocalization and have diverse repertoires partition their acoustic space. In this study, we studied four species of closely related group of birds, the drongos, in a tropical evergreen forest in South Asia. We made field vocal recordings as well as estimated song perch heights in the four species from December 2018-April 2019. Using ordination methods like PCA and LDA, we find wide overlap in the acoustic space in the four sympatric drongos. We, however, find that drongos segregate vertically. We hypothesize that drongos overlap in acoustic space owing to their ability to mimic other species, which increases their acoustic signal breadth. To partition their acoustic space, drongos potentially vocalize from different perch heights. Our study broadens our understanding of how a vocally diverse group of birds may partition in the acoustic signal space.

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Seasonality and interspecific temporal partitioning in a semiarid grassland bat assemblage of northwestern India

Cited by 2 publications

References 61 publications

Conservation Value to Bats: Assessing Multiple Functional Habitats in a Nature Preserve at the Urban-Agricultural Interface via Temporal Ecology

Conservation Value to Bats: Assessing Multiple Functional Habitats in a Nature Preserve at the Urban-Agricultural Interface via Temporal Ecology

Signal space overlap in sympatric drongos (Aves: Dicruridae) and spatial segregation in a South Asian tropical rainforest

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