Factors affecting the distribution pattern of bats in Uppland, central Sweden

Jong, Johnny de; Ahlén, Ingemar

doi:10.1111/j.1600-0587.1991.tb00638.x

Cited by 54 publications

(43 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Birds of prey may be important (Speakman 1991), but should mainly affect behaviour at sunset and sunrise. In line with the fourth hypotheses, the distribution of hunting bats is known to be affected mainly by insect abundance (de Jong and Ahlen 1991), and hedgerows, forest edges, etc, have been shown to act as barriers for insects transported by the wind (Lewis 1970).…”

Section: Discussionmentioning

confidence: 89%

Habitat use and species richness of bats in a patchy landscape

De¹

1995

Acta Theriol.

View full text Add to dashboard Cite

de Jong J. 1995. Habitat use and species richness of bats in a patchy landscape. Acta Theriologica 40: 237-248.Habitat destruction and fragmentation caused by modern forestry and agriculture are some of the main problems for the long-term survival of many species. In this study, a bat community of 11 species was investigated with the objective to evaluate the impacts of patch size, distance between habitat patches and habitat quality on species number, and also to investigate the use of corridors. Habitat islands, varying in size from 0.1 to 98.7 ha, in an agriculture-dominated landscape were surveyed. Habitat use by four species: Myotis brandti (Eversmann, 1845), M. nattereri (Kuhl, 1818), Pipistrellus pipistrellus (Schreber, 1774), and Plecotus auritus (Linnaeus, 1758), was recorded in detail. In a stepwise multiple regression species number was found to be positively related to the area of deciduous woodland, but not to the area of coniferous forest or the distance to the continuous forest. Three of the four study species avoided all kinds of open habitats. Corridors were used as hunting habitats. Different hypotheses that might explain behaviour in open habitats are discussed.

show abstract

Section: Discussionmentioning

confidence: 89%

Habitat use and species richness of bats in a patchy landscape

De¹

1995

Acta Theriol.

View full text Add to dashboard Cite

show abstract

“…Artificial light attracts many positively phototactic insects (Rydell 1992;Eisenbeis 2006), and most insectivorous bats are probably opportunistic feeders. Thus, they quickly identify and exploit insect accumulations such as swarming termites (Gould 1978) and insect clusters at artificial lights (Fenton and Morris 1976;Bell 1980;de Jong and Ahlén 1991). So some insectivorous bats probably profit from street lights because resource predictability and high insect densities increase foraging efficiency (Rydell 1992(Rydell , 2006.…”

Section: Observational Studies On Bats At Street Lightsmentioning

confidence: 99%

“…Even within a species, foraging activity at lamps can be highly variable depending on the quantity of insects available: Geggie and Fenton (1985) never observed E. fuscus foraging around street lights in an urban environment, whereas in rural habitats feeding activity was greater at lights than in areas without lights. In spring and autumn, when artificial lights attract numerous insects in Sweden, E. nilssonii activity is about 20-fold higher in towns with street lighting than in non-illuminated towns, forest and farmland (de Jong and Ahlén 1991;Rydell 1991), with the bats flying back and forth above the street lights, regularly diving to within 1 m of the ground to catch insects.…”

Section: Winners and Losers: Light-tolerant And Light-averse Batsmentioning

confidence: 99%

Dark Matters: The Effects of Artificial Lighting on Bats

Rowse

Lewanzik

Stone

et al. 2015

Bats in the Anthropocene: Conservation of Bats in a Changing World

View full text Add to dashboard Cite

While artificial lighting is a major component of global change, its biological impacts have only recently been recognised. Artificial lighting attracts and repels animals in taxon-specific ways and affects physiological processes. Being nocturnal, bats are likely to be strongly affected by artificial lighting. Moreover, many species of bats are insectivorous, and insects are also strongly influenced by lighting. Lighting technologies are changing rapidly, with the use of light-emitting diode (LED) lamps increasing. Impacts on bats and their prey depend on the light spectra produced by street lights; ultraviolet (UV) wavelengths attract more insects and consequently insectivorous bats. Bat responses to lighting are species-specific and reflect differences in flight morphology and performance; fast-flying aerial hawking species frequently feed around street lights, whereas relatively slowflying bats that forage in more confined spaces are often light-averse. Both highpressure sodium and LED lights reduce commuting activity by clutter-tolerant bats of the genera Myotis and Rhinolophus, and these bats still avoided LED lights when dimmed. Light-induced reductions in the activity of frugivorous bats may affect ecosystem services by reducing dispersal of the seeds of pioneer plants and hence reforestation. Rapid changes in street lighting offer the potential to explore

show abstract

“…Some studies show that insectivorous bats present this bimodal pattern due to the exploitation of peaks of activity of aerial insects: a first peak in the number of insects usually occurs after dusk and a second just before dawn (Swift 1980, Rautenbach et al 1988, Jones & Rydell 1994). As insect activity seems to decline in the middle of night, apparently caused by a drop in ambient temperature (Rydell 1992), insectivorous bats do not have any advantage in a continued foraging activity all night long ( Rautenbach et al 1988, Jones & Rydell 1994, because this would mean a waste of energy ( Kunz 1973, Swift 1980, Jong & Ahlén 1991. According to Schoener (1971), under the light of the optimal foraging theory, the optimal diet is one which provides one way to obtain the greatest net energy per unit feeding.…”

Section: Emergence Time Nocturnal Occupancy Of the Roost And Flight mentioning

confidence: 99%

Roosting behaviour and phenology of the Lesser horseshoe bat (Rhinolophus hipposideros) in a breeding colony in Sintra, Portugal

Lino¹,

Fonseca²,

Mendes³

et al. 2015

Galemys

View full text Add to dashboard Cite

Almost all bats are exclusively nocturnal. However, the activity patterns throughout the night can differ between species and also within the same species from place to place. Rhinolophus hipposideros (Bechstein, 1800) has suffered a severe decline in many countries along its distribution area, including Portugal. In this study we aimed to describe the roosting behaviour during spring, summer and autumn of one of the largest maternity colonies of R. hipposideros known in Portugal. We analysed roost occupancy, activity patterns inside the roost, birth periods, and post-natal behaviour. We also tested the influence of ambient factors on the patterns of roost use. All information was obtained through the analyses of video recorded using cameras placed inside the roost, while climatic data were gathered using a meteorological station. We found that this roost has higher occupation during August and that in October it is only occupied during the night. Females gave birth from late May to early June, and in August juveniles became independent and undistinguishable from the adults. This colony presented a bimodal pattern of activity throughout the months of the study, which seems to be related with sunset and sunrise. Our results indicate that individuals of this colony prefer higher temperatures, but low humidity and wind speed to leave the roost. Key Words: Rhinolophus hipposideros, paternal care, roost use, Portugal. ResumenCasi todos los murciélagos tienen hábitos nocturnos pero los patrones de actividad durante la noche pueden variar entre las especies y dentro de la misma especie en diferentes lugares. El murciélago pequeño de herradura Rhinolophus hipposideros (Bechstein, 1800) sufrió un severo declive en muchos países de su área de distribución, incluyendo Portugal. En este estudio, se pretende describir el comportamiento de refugio durante la primavera, verano y otoño de una de las colonias de cría más grande de R. hipposideros en Portugal. Asimismo, se analizó la ocupación y los patrones de actividad en el refugio, el periodo de nacimientos, y el comportamiento postnatal. También se comprobó el efecto de los factores ambientales en el uso del refugio. Toda la información se obtuvo a partir del análisis de los videos grabados en el interior del refugio. Los datos climáticos se obtuvieron mediante una estación meteorológica. Se observó que el refugio tiene una mayor ocupación durante el mes de agosto y que en octubre sólo se ocupa durante la noche. Las hembras dan a luz entre finales de mayo y principios de junio, y en agosto los juveniles parecen ser independientes e indistinguibles de los adultos. Esta colonia presenta un patrón bimodal de actividad que parece estar relacionado con el atardecer y amanecer. Nuestros resultados también indican que esta colonia de murciélagos prefiere altas temperaturas pero baja humedad y una cierta velocidad del viento para abandonar el refugio. Palabras clave: Rhinolophus hipposideros; cuidado paternal; uso de abrigo; Portugal. Galemys 27, 2015 2

show abstract

Factors affecting the distribution pattern of bats in Uppland, central Sweden

Cited by 54 publications

References 19 publications

Habitat use and species richness of bats in a patchy landscape

Habitat use and species richness of bats in a patchy landscape

Dark Matters: The Effects of Artificial Lighting on Bats

Roosting behaviour and phenology of the Lesser horseshoe bat (Rhinolophus hipposideros) in a breeding colony in Sintra, Portugal

Contact Info

Product

Resources

About