Enhancing sampling design in mist-net bat surveys by accounting for sample size optimization

Trevelin, Leonardo Carreira; Novaes, Roberto Leonan Morim; Colas-Rosas, Paul François; Benathar, Thayse Cristhina Melo; Peres, Carlos A.

doi:10.1371/journal.pone.0174067

Cited by 19 publications

(9 citation statements)

References 40 publications

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“…Firstly, this species is difficult to capture using ground-nets due to its foraging behaviour. Optimizing net configuration and location may, however, help in increasing the capture rate (Trevelin et al 2017). In this study, the two individuals of P. centralis were captured in nets placed across a shallow water body in open spaces.…”

Section: Discussionmentioning

confidence: 99%

Second capture of Promops centralis (Chiroptera) in French Guiana after 28 years of mist-netting and description of its echolocation and distress calls

Froidevaux

Roemer

Lemarchand³

et al. 2020

Acta Amaz.

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The Amazonian basin harbours some of the most bat-diverse ecosystems worldwide. Yet, information on elusive, high-flying bat species such as Molossidae is scarce or virtually missing in the literature, which hampers conservation efforts both locally and globally. The recent advent of new technologies specifically designed to survey bats, such as passive ultrasound detectors and acoustic lures, has significantly increased understanding of bat ecology and distribution, and has allowed researchers to gather new and valuable information which was impossible to collect in the past. We undertook a rapid bat diversity assessment in French Guiana using acoustic lures to aid in capturing high-flying insectivorous bat species. Here we report the second and third capture record of Promops centralis (Chiroptera, Molossidae) for French Guiana, captured after 28 years since the first and only captures so far in the county. One individual was a post-lactating female and represents the first record of breeding P. centralis in French Guiana. We provide (i) morphometric and acoustic data (including the species’ distress calls) as well as detail photography to aid in species identification; and (ii) COI and CytB sequences of the two individuals (first mitochondrial sequences for French Guiana).

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Section: Discussionmentioning

confidence: 99%

Second capture of Promops centralis (Chiroptera) in French Guiana after 28 years of mist-netting and description of its echolocation and distress calls

Froidevaux

Roemer

Lemarchand³

et al. 2020

Acta Amaz.

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“…Trevelin et al. (2017), who assessed the effectiveness of capturing phyllostomids with mist‐nets during the first 6 h in the Neotropics, obtained similar results. Our study is the first to address similar questions for Neotropical aerial insectivorous bats, evaluating how completeness changed in response to cumulative increases in effort (i.e., number of sampling hours) instead of discrete recording time windows as used by Froidevaux et al.…”

Section: Discussionmentioning

confidence: 71%

“…A number of studies have already addressed these problems with regard to mist-netting and provided sampling design recommendations as to how best to cope with them (Hayes 2000, Duchamp et al 2006, Gorresen et al 2008, Fischer et al 2009). However, whereas sampling design optimization has been an active area of research for these more conventional techniques (e.g., Weller and Lee 2007, Marques et al 2013, Trevelin et al 2017, similar comprehensive assessments for bioacoustics are limited (but see Rodhouse et al 2011, Froidevaux et al 2014, Pieretti et al 2015. Different acoustic sampling protocols to estimate bat species richness and activity have been evaluated in temperate areas (Skalak et al 2012, Froidevaux et al 2014.…”

Section: Introductionmentioning

confidence: 99%

Optimizing bat bioacoustic surveys in human‐modified Neotropical landscapes

López‐Baucells

Yoh

Rocha

et al. 2021

Ecological Applications

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During the last decades, the use of bioacoustics as a non-invasive and costeffective sampling method has greatly increased worldwide. For bats, acoustic surveys have long been known to complement traditional mist-netting, however, appropriate protocol guidelines are still lacking for tropical regions. Establishing the minimum sampling effort needed to detect ecological changes in bat assemblages (e.g., activity, composition, and richness) is crucial in view of workload and project cost constraints, and because detecting such changes must be reliable enough to support effective conservation management. Using one of the most comprehensive tropical bat acoustic data sets, collected in the Amazon, we assessed the minimum survey effort required to accurately assess the completeness of assemblage inventories and habitat selection in fragmented forest landscapes for aerial insectivorous bats. We evaluated a combination of 20 different temporal sampling schemes, which differed regarding number of hours per night, number of nights per site, and sampling only during the wet or dry season, or both. This was assessed under two different landscape scenarios: in primary forest fragments embedded in a matrix of secondary forest and in the same forest fragments, but after they had been re-isolated through clearing of the secondary forest. We found that the sampling effort required to achieve 90% inventory completeness varied considerably depending on the research aim and the landscape scenario evaluated, averaging~80 and 10 nights before and after fragment re-isolation, respectively. Recording for more than 4 h per night did not result in a substantial reduction in the required number of sampling nights. Regarding the effects of habitat selection, except for assemblage composition, bat responses in terms of richness, diversity, and activity were similar across all sampling schemes after fragment re-isolation. However, before re-isolation, a minimum of four to six sampling hours per night after dusk and three to five nights of sampling per site were needed to detect significant effects that could otherwise go unnoticed. Based on our results, we propose guidelines that will aid to optimize sampling protocols for bat acoustic surveys in the Neotropics.

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“…Pteropodidae, Emballonuridae, Nycteridae, Megadermatidae, Rhinolophidae, Hipposideridae, and Vespertilionidae were recorded within the three habitat types. Comprehensive sampling time, intensive trapping and sampling design (Trevelin et al, 2017), equipment, i.e. radiotelemetry, and manpower strongly influence the number of bat species captured (Kingston et al, 2006).…”

Section: Species Accountsmentioning

confidence: 99%

Diversity of bats in three selected forest types in Peninsular Malaysia

Nasir¹,

Nasir²,

Ramli³

2021

Turk J Zool

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Bats, occupying a variety of habitats, play important roles in the tropical forest. Through this study, comparisons on bat species richness and evenness in primary forest, secondary forest, and urban forest were made. Sampling was conducted between 18:30 PM and 06:30 AM using 10 mist-nets and four harp traps for three consecutive nights at the primary and secondary forest of Ulu Gombak Forest Reserve and urban forest in the Universiti Malaya Botanical Garden. This study progressed from February 2012 until April 2014. A total number of 1226 individuals representing 46 species were managed to be captured throughout the period of this study. From this, a total of 396 individuals of bats from 33 species were recorded in primary forest, 608 individuals of bats from 31 species were recorded in secondary forest and 222 individuals of bats from 11 species were recorded in the urban forest. The primary forest (Shannon-Wiener, H' = 2.516) has a higher diversity of bats compared to the secondary forest (Shannon-Wiener, H' = 2.476) and the urban forest (Shannon-Wiener, H' = 1.527). However, the urban forest has a higher evenness index calculated (E = 0.4184) compared to the primary forest (E = 0.3994) and the secondary forest (E = 0.3718). Species richness in the secondary forest is the highest (Dmn = 1.616) followed by the primary forest (Dmn = 1.257) and the urban forest (Dmn = 0.7383). This study showed that the primary forest is more diversified compared to other habitats although more individuals were recorded in the secondary forest.

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Enhancing sampling design in mist-net bat surveys by accounting for sample size optimization

Cited by 19 publications

References 40 publications

Second capture of Promops centralis (Chiroptera) in French Guiana after 28 years of mist-netting and description of its echolocation and distress calls

Second capture of Promops centralis (Chiroptera) in French Guiana after 28 years of mist-netting and description of its echolocation and distress calls

Optimizing bat bioacoustic surveys in human‐modified Neotropical landscapes

Diversity of bats in three selected forest types in Peninsular Malaysia

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