Olga Heim

Olga Heim
Leibniz Institute for Zoo and Wildlife Research · Department of Evolutionary Ecology

Dr. rer. nat.

About

22
Publications
6,200
Reads
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235
Citations
Introduction
As an ecologist, I am very interested in human-wildlife conflicts. My focus lies on bat ecology in anthropogenic landscapes. I hold extensive expertise in acoustic identification of European bat species, landscape analysis (GIS) and statistical modeling in R. Besides bats, I am also interested in effects of human activities, such as agricultural management, on overall biodiversity.
Additional affiliations
September 2019 - August 2021
Doshisha University
Position
  • PostDoc Position
October 2017 - October 2017
University of Turku
Position
  • Researcher
June 2017 - June 2017
University of Tokyo
Position
  • Researcher
Education
January 2012 - April 2017
Universität Potsdam
Field of study
  • Biology
October 2006 - December 2011
Ulm University
Field of study
  • Biology

Publications

Publications (22)
Article
Full-text available
Landscape heterogeneity is regarded as a key factor for maintaining biodiversity and ecosystem function in production landscapes. We investigated whether grassland sites at close vicinity to forested areas are more frequently used by bats. Considering that bats are important consumers of herbivorous insects, including agricultural pest, this is imp...
Article
Full-text available
Land-use intensification at local and landscape level poses a serious threat to biodiversity and affects species interactions and ecosystem function. It is thus important to understand how interrelated taxa respond to land-use intensification and to consider the importance of different spatial scales. We investigated whether and how local land-use...
Article
Bats are top insect predators on farmland, yet they suffer from intensive farmland management. Here, we evaluated the seasonal activity patterns of European bats above large, arable fields and compared these patterns between ecologically distinct bat species. Using repeated passive acoustic monitoring on a total of 93 arable fields in 2 years in Br...
Article
Full-text available
We report the creation of variant maps based on bat echolocation call recordings. The maps show regular patterns while characteristic features change when bat call recording properties change. By focusing on specific visual features, we found a set of projection parameters which allowed us to classify the variant maps into two distinct groups. Thes...
Article
Full-text available
Introduction: Bats are threatened by agricultural intensification, and although bat ecology in agricultural landscapes is in the focus of current research, the effects of interacting spatiotemporal factors on species-specific bat activity above farmland remain understudied. Our aim was to identify spatiotemporal factors and their interactions relev...
Article
Echolocating bats use echo delay for target ranging and Doppler shift information for relative velocity recognition. However, how they perceive moving objects remains unclear. To investigate this question, we played back echolocation pulses in real-time as virtual echoes to Japanese horseshoe bats ( Rhinolophus ferrumequinum nippon ) on a perch in...
Article
Full-text available
Background Echolocating bats use echo information to perceive space, control their behavior, and adjust flight navigation strategies in various environments. However, the echolocation behavior of bats, including echo information, has not been thoroughly investigated as it is technically difficult to measure all the echoes that reach the bats during...
Article
Full-text available
Bats emit a series of echolocation calls with an increasing repetition rate (the terminal buzz), when attempting to capture prey. This is often used as an acoustic indicator of prey-capture attempts. However, because it is directly linked to foraging efficiency, predation success is a more useful measure than predation attempts in ecological resear...
Article
Full-text available
One mechanism for morphologically similar and sympatric species to avoid competition and facilitate coexistence is to feed on different prey items within different microhabitats. In the current study, we investigated and compared the diet of the two most common and similar-sized bat species in Japan—Murina ussuriensis (Ognev, 1913) and Myotis ikonn...
Preprint
Bats emit a series of echolocation calls with an increasing repetition rate (the terminal buzz), when attempting to capture prey. This is often used as an acoustic indicator of prey-capture attempts. However, because it is directly linked to foraging efficiency, predation success is a more useful measure than predation attempts in ecological resear...
Preprint
Full-text available
Behavioral experiments with acoustic measurements have revealed the intriguing strategies of flight navigation and the use of ultrasound by echolocating bats in various environments. However, the echolocation behavior of bats has not been thoroughly investigated in regard to the environment they perceive via echolocation because it is technically d...
Chapter
Full-text available
Die Erfassung des Artvorkommens und der Aktivität von Fledermäusen im Rahmen von Genehmigungsverfahren für Windenergieanlagen (WEA) beruht auf der legalen Notwendigkeit, das gesetzlich verankerte Störungs- und Tötungsverbot geschützter Arten umzusetzen. In einer Internetumfrage baten wir Fachexpert*innen um eine Einschätzung der Eignung und Praxist...
Chapter
Full-text available
Im Rahmen einer internetbasierten Umfrage wurde die Einschätzung von Expert*innen aus der Genehmigungspraxis von Windenergieanlagen (Vertreter*innen der Naturschutzbehörden und dem Windenergiesektor, Mitglieder und Mitarbeiter*innen von Umweltschutzorganisationen, Wissenschaftler*innen und Fachgutachter*innen) zur Vereinbarkeit von Artenschutz, spe...
Article
Full-text available
Using echolocation, bats receive acoustic information on their surroundings, which is assumed to help them sophisticatedly navigate complex environments. In this study, to understand spatial learning and acoustic sensing in bats, we investigated how flight and echolocation control changed in Rhinolophus ferrumequinum nippon as they learnt about the...
Article
Full-text available
Insectivorous bats consume a large variety of food items. Previous observations of feathers found in feces led to the hypothesis that the birdlike noctule (Nyctalus aviator, Vespertilionidae) could prey on birds. To test the hypothesis, we analyzed fecal samples from six species (Barbastella pacifica, Murina hilgendorfi, Myotis frater, N. aviator,...
Article
Automated ultrasonic recordings are widely used in basic and applied research to detect the presence of bats. Often, algorithms for the automated identification of species are based on a pre-processing of acoustic information that involves the generation of spectrograms. Even though this approach is technically advanced, recent surveys highlight su...
Article
Full-text available
Over the past decade, the expansion of energy production from renewable sources has led to increasing conflicts, which are most evident in the relatively high numbers of bats killed at wind turbines (WT). In many cases, operation of a WT is only granted under species-specific mitigation measures, such as WT curtailments to minimize bat collisions....
Chapter
Full-text available
We created variant maps based on bat echolocation call recordings and outline here the transformation process and describe the resulting visual features. The maps show regular patterns while characteristic features change when bat call recording properties change. By focusing on specific visual features, we found a set of projection parameters whic...
Article
Full-text available
Over the past decade, the expansion of energy production from renewable sources has led to increasing conflicts, which are most evident in the relatively high numbers of bats killed at wind turbines (WT). In many cases, operation of a WT is only granted under species-specific mitigation measures, such as WT curtailments to minimize bat collisions....
Article
Full-text available
Bats are known to forage and commute close to vegetation structures when moving across the agricultural matrix, but the role of isolated landscape elements in arable fields for bat activity is unknown. Therefore, we investigated the influence of small isolated ponds which lie within arable fields close to vegetation structures on the flight and for...
Thesis
Intakte und widerstandsfähige Ökosysteme sind essenziell für die Aufrechterhaltung optimaler Lebensbedingungen für das Leben auf der Erde. Die Basis für solche Ökosysteme bilden intakte ökologische Wechselwirkungen zwischen einer Vielzahl von Arten. Durch den beispiellosen Verlust der Biodiversität, welcher durch die in der zweiten Hälfte des 20. J...
Data
Table S1. Echolocation call characteristics of bat species and sonotypes, used for the identification of recorded sound sequences in the Schorfheide‐Chorin.

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