Nightly patterns of calling activity in anuran assemblages of the Cerrado, Brazil

Guerra, Vinícius; Costa, Nayhane de Queiroz; Llusia, Diego; Márquez, Rafael

doi:10.1007/s42974-020-00013-8

Cited by 12 publications

(14 citation statements)

References 62 publications

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“…Chorusing formation may benefit calling energetic costs by increasing attractiveness for mates to a common breeding site and minimizing predation risk (Schwartz & Bee, 2013). Although chorusing attendance and diel activity patterns are widely described in species‐specific studies (Bertoluci & Rodrigues, 2002; Gottsberger & Gruber, 2004; Heinermann et al., 2015; Lopez et al, 2011; Schalk & Saenz, 2016), community‐wide approaches remained elusive (Dubos et al., 2020; Guerra et al., 2020; Ulloa et al., 2019). Considering our findings on the influence of habitat heterogeneity and species interactions on nightly compositional variation of anuran assemblages, we argue that future studies should take into consideration the contribution of ecological contexts in species calling activity, in addition to abiotic factors such as temperature and rainfall.…”

Section: Discussionmentioning

confidence: 99%

“…Chorusing formation may benefit calling energetic costs by increasing attractiveness for mates to a common breeding site and minimizing predation risk (Schwartz & Bee, 2013). Although chorusing attendance and diel activity patterns are widely described in species-specific studies (Bertoluci & Rodrigues, 2002;Gottsberger & Gruber, 2004;Heinermann et al, 2015;Lopez et al, 2011;Schalk & Saenz, 2016), community-wide approaches remained elusive (Dubos et al, 2020;Guerra et al, 2020;Ulloa et al, 2019). signalling parameters or behaviour when exposed to heterospecific calls (Both & Grant, 2012;Phelps et al, 2006), while the influence of species interactions on calling activity still remains to be elucidated.…”

Section: Discussionmentioning

confidence: 99%

“…by maintaining low levels of desiccation in forested patches) and dispersal dynamics underlying variation in the composition of assemblages (Signorelli et al., 2016; Werner et al., 2007). Nonetheless, short‐term variation in species activity has been mainly addressed with respect to meteorological and social factors (Dubos et al., 2020; Guerra et al., 2020; Llusia et al., 2013; Oseen & Wassersug, 2002; Saenz et al., 2006; Schalk & Saenz, 2016) and the role of ecological processes driving such dynamics remain largely unexplored.…”

Section: Introductionmentioning

confidence: 99%

“…Nonetheless, short-term variation in species activity has been mainly addressed with respect to meteorological and social factors (Dubos et al, 2020;Guerra et al, 2020;Llusia et al, 2013;Oseen & Wassersug, 2002;Saenz et al, 2006;Schalk & Saenz, 2016) This knowledge gap can be traced back to historically challenging conditions in addressing nocturnal phenomena (Gaston, 2019), in addition to the human-observer limitation in investigating multiple sites simultaneously. Currently, modern techniques enabling passive acquisition of high-resolution data have been solving these practical issues and steadily improving our capacity to address diverse ecological phenomena (Gaston, 2019;Rocchini et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Drivers of assemblage‐wide calling activity in tropical anurans and the role of temporal resolution

Sugai

Silva

Llusia

et al. 2020

Journal of Animal Ecology

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Temporal scale in animal communities is often associated with seasonality, despite the large variation in species activity during a diel cycle. A gap thus remains in understanding the dynamics of short‐term activity in animal communities. Here we assessed calling activity of tropical anurans and addressed how species composition varied during night activity in assemblages along gradients of local and landscape environmental heterogeneity. We investigated 39 anuran assemblages in the Pantanal wetlands (Brazil) with passive acoustic monitoring during the peak of one breeding season, and first determined changes in species composition between night periods (early, mid and late) using two temporal resolutions (1‐ and 3‐hr intervals). Then, we addressed the role of habitat structure (local and landscape heterogeneity variables from field‐based and remote sensing metrics) and ecological context (species richness and phylogenetic relatedness) in determining changes in species composition (a) between night periods and (b) across days. Nocturnal calling activity of anuran assemblages varied more within the 1‐hr resolution than the 3‐hr resolution. Differences in species composition between early‐ and late‐night periods were related to local habitat structure and phylogenetic relatedness, while a low variation in compositional changes across days was associated with low‐heterogeneous landscapes. None of these relationships were observed using the coarser temporal resolution (3 hr). Our findings on the variation of calling activity in tropical anuran assemblages suggest potential trade‐offs mediated by fine‐temporal partitioning. Local and landscape heterogeneity may provide conditions for spatial partitioning, while the relatedness among co‐signalling species provides cues on the ecological overlap of species with similar requirements. These relationships suggest a role of niche dimensional complementarity on the structuring of these anuran assemblages over fine‐temporal scales. We argue that fine‐temporal differences between species in breeding activity can influence the outcome of species interaction and thus, addressing temporal scaling issues can improve our understanding of the dynamics of animal communities.

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Section: Discussionmentioning

confidence: 99%

“…Chorusing formation may benefit calling energetic costs by increasing attractiveness for mates to a common breeding site and minimizing predation risk (Schwartz & Bee, 2013). Although chorusing attendance and diel activity patterns are widely described in species-specific studies (Bertoluci & Rodrigues, 2002;Gottsberger & Gruber, 2004;Heinermann et al, 2015;Lopez et al, 2011;Schalk & Saenz, 2016), community-wide approaches remained elusive (Dubos et al, 2020;Guerra et al, 2020;Ulloa et al, 2019). signalling parameters or behaviour when exposed to heterospecific calls (Both & Grant, 2012;Phelps et al, 2006), while the influence of species interactions on calling activity still remains to be elucidated.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Drivers of assemblage‐wide calling activity in tropical anurans and the role of temporal resolution

Sugai

Silva

Llusia

et al. 2020

Journal of Animal Ecology

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“…Studies have suggested that mixed‐species choruses might involve both costs and benefits (Grafe, 2005; Ryan et al., 1981). Competition for acoustic space is the most obvious cost of chorusing in mixed‐species choruses and is expected to be exacerbated in richer assemblages, with an increased risk of masking interference that can jeopardize signal integrity and species recognition (Guerra et al., 2020). Thus, selection against these communicative constrains is expected to drive signal divergence among species, as postulated by acoustic niche partitioning (Hödl, 1977).…”

Section: Introductionmentioning

confidence: 99%

Structure and dynamics of mixed‐species choruses in a tropical anuran assemblage: insights from network analysis

et al. 2021

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Males of a wide variety of vertebrates aggregate in mixed‐species choruses to attract females and signal territory occupancy. It is often assumed that species within these choruses co‐signal, interact and compete for the acoustic space, although few studies have tested this assumption, particularly in tropical and highly diverse environments. Using a novel combination of passive acoustics and network analysis, we monitored calling activity of a tropical anuran assemblage for an entire year and examined the structure and dynamics of mixed‐species choruses. Species composition was determined at 1‐min resolution on 288 recording hours and then used to estimate a set of centrality metrics (degree, strength and eigenvector) that characterize the species roles within the acoustic network. The studied assemblage formed a dynamic network comprising eight species during the rainy season and four during the dry season. These species showed distinct roles within the network, ranging from central species (those co‐signalling frequently and with many species) to peripheral species (those barely co‐signalling and with few species). Our results shed light on the species interactions in acoustic communities and challenge the general assumption of an equal contribution of species to the mixed‐species choruses. While in the rainy season the territorial frogs Boana albopunctata and B. faber exhibit the most prominent role within the network (with a higher degree, strength and eigenvector centrality), all of the species calling in the dry season co‐signalled with equal number of species, with only another territorial species, B. lundii, showing a higher rate of co‐signalling events (higher strength and eigenvector centrality). This suggests that territorial behaviour may favour increased calling activity and hence central roles in acoustic networks. These findings contribute to a better understanding of chorus dynamics in tropical assemblages and have crucial implications for the study of species interactions and the evolutionary hypotheses of acoustic divergence.

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Estimating the diversity of tropical anurans in fragmented landscapes with acoustic monitoring: lessons from a sampling sufficiency perspective

et al. 2022

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Nightly patterns of calling activity in anuran assemblages of the Cerrado, Brazil

Cited by 12 publications

References 62 publications

Drivers of assemblage‐wide calling activity in tropical anurans and the role of temporal resolution

Drivers of assemblage‐wide calling activity in tropical anurans and the role of temporal resolution

Structure and dynamics of mixed‐species choruses in a tropical anuran assemblage: insights from network analysis

Estimating the diversity of tropical anurans in fragmented landscapes with acoustic monitoring: lessons from a sampling sufficiency perspective

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