Effects of a drought episode on the reproductive success of European free-tailed bats (Tadarida teniotis)

Amorim, Francisco; Mata, Vanessa A.; Beja, Pedro; Rebelo, Hugo

doi:10.1016/j.mambio.2015.01.005

Cited by 34 publications

(36 citation statements)

References 39 publications

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“…These variables represent climatic conditions that are predicted to change under future projections for Iberia (Diffenbaugh & Field, ) and are likely to affect bats. Increased aridity and prolonged droughts around the Mediterranean are predicted to affect insect prey availability during the summer (Frampton, Van Den Brink, & Gould, ), and thus decrease reproductive success in bats (Adams, ; Amorim, Matta, Beja, & Rebelo, ). In addition, bat survival in warmer and more arid conditions requires physiological adaptations to reduce evaporative water loss (Muñoz‐Garcia et al., ).…”

Section: Methodsmentioning

confidence: 99%

An integrated framework to identify wildlife populations under threat from climate change

Razgour

Taggart

Manel

et al. 2017

Molecular Ecology Resources

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Climate change is a major threat to global biodiversity that will produce a range of new selection pressures. Understanding species responses to climate change requires an interdisciplinary perspective, combining ecological, molecular and environmental approaches. We propose an applied integrated framework to identify populations under threat from climate change based on their extent of exposure, inherent sensitivity due to adaptive and neutral genetic variation and range shift potential. We consider intraspecific vulnerability and population-level responses, an important but often neglected conservation research priority. We demonstrate how this framework can be applied to vertebrates with limited dispersal abilities using empirical data for the bat Plecotus austriacus. We use ecological niche modelling and environmental dissimilarity analysis to locate areas at high risk of exposure to future changes. Combining outlier tests with genotype-environment association analysis, we identify potential climate-adaptive SNPs in our genomic data set and differences in the frequency of adaptive and neutral variation between populations. We assess landscape connectivity and show that changing environmental suitability may limit the future movement of individuals, thus affecting both the ability of populations to shift their distribution to climatically suitable areas and the probability of evolutionary rescue through the spread of adaptive genetic variation among populations. Therefore, a better understanding of movement ecology and landscape connectivity is needed for predicting population persistence under climate change. Our study highlights the importance of incorporating genomic data to determine sensitivity, adaptive potential and range shift potential, instead of relying solely on exposure to guide species vulnerability assessments and conservation planning.

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Section: Methodsmentioning

confidence: 99%

An integrated framework to identify wildlife populations under threat from climate change

Razgour

Taggart

Manel

et al. 2017

Molecular Ecology Resources

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“…A drought event in Portugal impaired the reproduction of Tadarida teniotis (Amorim et al. ). Also, contaminants or pollutants from aquatic systems can be transferred to terrestrial systems via bats’ consumption of insects or drinking water.…”

Section: Introductionmentioning

confidence: 99%

“…This may have indirect effects on bats as, for example, successful lactation in a bat species living in an arid area is related to water availability (Adams & Hayes 2008). A drought event in Portugal impaired the reproduction of Tadarida teniotis (Amorim et al 2015). Also, contaminants or pollutants from aquatic systems can be transferred to terrestrial systems via bats' consumption of insects or drinking water.…”

Section: Introductionmentioning

confidence: 99%

Bats and aquatic habitats: a review of habitat use and anthropogenic impacts

Salvarina

2016

Mammal Review

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Many bats use aquatic habitats for foraging and for drinking water. Interactions between aquatic and terrestrial systems are important for understanding food web dynamics and for conserving species and ecosystems. Therefore, in this review, I examined the data available on bats’ use of aquatic habitats. The objectives of the present review were to evaluate the importance of aquatic resources for bats and to identify the effects that eutrophication, water pollution, and other anthropogenic impacts on water bodies have on bats. Most studies on bats and aquatic habitats have been conducted in Europe or in North America. They show, directly or indirectly, how bats use aquatic resources. Acoustic survey is the most common technique employed to assess habitat use by bats, although some researchers have used radio telemetry or other methods. Myotis daubentonii is the most commonly studied species. Within this topic, research does not tend to be focused more on threatened species. The effects of water pollution and eutrophication on bats remain unclear: different effects are reported for different species and in different areas. More studies are needed from Africa, South America, and Asia, regions for which few data are available, as well as from arid regions where fresh water is a limited resource.

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“…Temporal variations in environmental forces often result in time‐lagged ecological responses and the effects persist for certain periods of time (the so‐called antecedent effect, hysteresis, and ecological memory). Such antecedent effects have been observed in freshwaters and other realms at all ecological scales: physiological and behavioral changes of organisms (Tonkin et al , Amorim et al ), population dynamics (Magalhães et al , Rolls et al , George et al ), distributional ranges of species, and resistance and resilience at the community and ecosystem levels (Kinzig et al , Tockner et al ). The inclusion of antecedent effects at appropriate time scales in models generally better explains variations in ecological responses (Ogle et al ).…”

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confidence: 99%

“…In SDMs, they could reflect antecedent demographic and dispersal processes. In addition, the effects of environmental factors on a species distribution largely depend on the timing of their occurrence relative to the organism's life‐history strategy and stage (Winemiller , , Lytle and Poff , Amorim et al , George et al , Kanno et al ). Thus, considering both antecedent environmental conditions and their times of occurrence may be particularly important for understanding species distributions and thereby for improving SDMs.…”

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confidence: 99%

Importance of antecedent environmental conditions in modeling species distributions

2017

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Although species distributions can change in an unexpectedly short period of time, most species distribution models (SDMs) use only long‐term averaged environmental conditions to explain species distributions. We aimed to demonstrate the importance of incorporating antecedent environmental conditions into SDMs in comparison to long‐term averaged environmental conditions. We modeled the presence/absence of 18 fish species captured across 108 sampling events along a 50‐km length of the Sagami River in Japan throughout the 1990s (one to four times per site at 45 sites). We constructed and compared the two types of SDMs: 1) a conventional model that uses only long‐term averaged (10‐yr) environmental conditions; and 2) a proposed model that incorporates environmental conditions 2 yr prior to a sampling event (antecedent conditions) together with long‐term averages linked to life‐history stages. These models both included geomorphological, hydrological, and sampling conditions as predictors. A random forest algorithm was applied for modeling and quantifying the relative importance of the predictors. For seven species, antecedent hydrological conditions were more important than the long‐term averaged hydrological conditions. Furthermore, the distributions of two species with low prevalence could not be predicted using long‐term averaged hydrological conditions but only using antecedent hydrological conditions. In conclusion, incorporating antecedent environmental factors linked with life‐history stages at appropriate time scales can better explain changes in species distribution through time.

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Effects of a drought episode on the reproductive success of European free-tailed bats (Tadarida teniotis)

Cited by 34 publications

References 39 publications

An integrated framework to identify wildlife populations under threat from climate change

An integrated framework to identify wildlife populations under threat from climate change

Bats and aquatic habitats: a review of habitat use and anthropogenic impacts

Importance of antecedent environmental conditions in modeling species distributions

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