Luc De Bruyn

Luc De Bruyn
Research Institute for Nature and Forest | INBO · Species Diversity

PhD in Zoology, MS in Biostatistics

About

190
Publications
41,460
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4,782
Citations
Additional affiliations
January 2011 - present
January 1993 - present
University of Antwerp

Publications

Publications (190)
Article
Full-text available
The balance between costs and benefits is expected to drive associations between species. While these balances are well understood for strict associations, we have no insights to which extent they determine facultative associations between species. Here, we quantified the costs of living in a facultative association, by studying the effects of red...
Article
Full-text available
The bat fauna of the Adriatic islands is relatively poorly known. Seven species were documented so far on the remote Adriatic islands of Vis and Biševo (Croatia). This study aims to increase knowledge on the bat communities on these islands. Bat echolocations were recorded between 30 April and 11 May 2018 at seven sites showing bat presence. Calls...
Article
Full-text available
Urbanization has been shown to strongly affect community composition of various taxa with potentially strong shifts in ecological interactions, including those between hosts and parasites. We investigated the effect of urbanization on the composition of arthropods in nests of great tits in Flanders, Belgium. These nests contain taxonomically and fu...
Article
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In temperate regions, winter is characterized by cold temperatures and low food availability. Heterothermic animals can bridge this period by entering a state of torpor characterized by decreased body temperature and reduced metabolic rate. Hibernation site choice is crucial since temperature conditions in the hibernaculum will impact torpor. We an...
Article
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It has been a long time since the world has experienced a pandemic with such a rapid devastating impact as the current COVID-19 pandemic. The causative agent, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is unusual in that it appears capable of infecting many different mammal species. As a significant proportion of people worldwide...
Article
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In this data paper three datasets are described containing GPS tracking and acceleration data of Western marsh harriers ( Circus aeruginosus ) breeding in Belgium and the Netherlands. The Western marsh harrier is included as a threatened bird species in Annex I of the European Bird Directive due to the steep decline in population densities. In orde...
Preprint
Full-text available
It has been a long time since the world has experienced a pandemic with such a rapid devastating impact as the current COVID-19 pandemic. The causative agent, the Severe Acute Respiratory Syndrome coronavirus 2 (SARS-CoV-2) is further unusual in that it appears capable of infecting many different mammal species. As a significant proportion of peopl...
Article
The 100 km long Międzyrzecz Fortified Front, Ostwall or Festungsfront im Oder-Warthe Bogen, is located between the rivers Odra in the south and Warta in the north and was built by Germany in 1934 – 1944. The Central Sector “Wysoka” (Zentralabschnitt or Abschnitt Hochwalde), starting south of Staropole, and ending on the lake Kursko, only ca. 15 km...
Article
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The ability to accurately identify individuals is essential for both management and research of wild or captive animals. Marks need to be clear enough to be recovered, long-lived enough to provide useful information and not have health implications for the tagged animal which may affect survival. Substantial evidence suggests that more invasive, pe...
Article
Background: Aphids (Hemiptera: Aphididae) are a problematic pest in global sweet pepper cultivation. Control of aphids often relies on insecticides, leading to widespread resistance. Biological control of aphids is mainly based on releasing specialist natural enemies, but they often fail in controlling outbreaks. Macrolophus pygmaeus Rambur (Hemip...
Technical Report
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Each Member State needs to report every 6 years (2013-2019, 2025…) to the European Commission (EC) about the conservation status of habitats and species present in each biogeographical region. This document presents the reporting files for the different bat sepcies for the period 2013-2018 of the species present in Flanders (northern Belgium). The...
Technical Report
Full-text available
Each Member State needs to report every 6 years (2013-2019, 2025…) to the European Commission (EC) about the conservation status of habitats and species present in each biogeographical region. This document presents the applied method and results for the period 2013-2018 of the species present in Flanders (northern Belgium). Flanders is nearly comp...
Article
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The Chequered Skipper Carterocephalus palaemon inhabits a variety of habitats in NW Europe: heathlands, wet grasslands and chalk grasslands, usually at woodland edges and wide rides and glades in different types of woodlands. It mainly uses broadleaved grasses such as Molinia, Calamagrostis and Brachypodium as host plants. The species became extinc...
Article
Macrolophus pygmaeus Rambur (Hemiptera: Miridae) is a generalist natural enemy that is used to control multiple pest species in a variety of horticultural crops. The bugs are released at the start of the crop cycle to allow them to establish and build up a population in the crop that can control pest infestations later in the season. To facilitate...
Technical Report
This report describes the monitoring networks for the mammals European hamster (Cricetus cricetus), Common dormouse (Muscardinus avellanarius), European badger (Meles meles) and European otter (Lutra lutra). The aim of the monitoring is to obtain a population trend estimate on a Flemish scale. Common dormouse is counted annually along transects and...
Article
Biological control is widespread in management of greenhouse sweet pepper crops. Several species of predatory mites, bugs, and parasitoids are used against a wide range of pest species. However, biological control of particular pests like aphids, caterpillars, and the tobacco whitefly, Bemisia tabaci Gennadius, remains problematic. Macrolophus pygm...
Article
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Morimus funereus Mulsant, 1862, a longhorn beetle listed in the Habitats directive, is reported for the first time in Belgium. A specimen was intercepted in Nijlen (near Antwerp) which is very likely explained by transport although the exact origin and route is unclear.
Technical Report
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De Stad Antwerpen wil de indicator‐ en doelsoorten opvolgen van alle gebieden in kader van het groenplan, om de evolutie in deze gebieden op te volgen en een gepast beheer toe te passen. Dit rapport geeft de resultaten van de uitgevoerde monitoring van planten, vogels, ongewervelden, amfibieën en reptielen en vleermuizen in Klaverblad/Hollebeek te...
Technical Report
Full-text available
This report describes the monitoring networks for the mammals European hamster (Cricetus cricetus), Common dormouse (Muscardinus avellanarius), European badger (Meles meles) and European otter (Lutra lutra). The aim of the monitoring is to obtain a population trend estimate on a Flemish scale. Common dormouse is counted annually along transects. Eu...
Article
Full-text available
Background: In order to optimize net transmission success, parasites are hypothesized to evolve towards causing minimal damage to their reservoir host while obtaining high shedding rates. For many parasite species however this paradigm has not been tested, and conflicting results have been found regarding the effect of arenaviruses on their rodent...
Article
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SUMMARY Westra T, De Knijf G, Ledegen H, De Bruyn L, Maes D, Onkelinx T, Piesschaert F, Vanreusel W, Van Elegem B, Pollet M & Quataert P. 2016. Monitoring priority species in Flanders. Implementation of new monitoring schemes. Natuur.focus 15(4): 156-165 [in Dutch] Reliable information on the status and trends of species is needed to support natur...
Technical Report
Full-text available
This report describes the protocol for the monitoring of grasshoppers in Flanders. We present the species that have to be monitored and the field protocol. The Saddle‐backed Bushcricket Ephippiger ephippiger must be monitored by counting the number of singing males. The Lesser‐mottled Grasshopper Stenobothrus stigmaticus is monitored by capturing a...
Technical Report
Full-text available
This report describes the protocol for the dragonfly monitoring network in Flanders (Belgium). We list the species that need to be monitored and the methods to do so. Three easily observed species of dragonfly (Calopteryx virgo, Coenagrion pulchellum and Aeshna isoceles) are counted using dragonfly-transects. We explain how the sampling frame was c...
Article
Metal oxide nanoparticles are increasingly being produced and will inevitably end up in the aquatic environment. Up till now, most papers have studied individual nanoparticle effects. However, the implementation of these data into a risk assessment tool, needed to characterise their risk to the aquatic environment, is still largely lacking. Therefo...
Article
Fish assemblages in reservoirs and lakes are mainly assessed by multiple sampling gear. The challenge exists in how to combine all the data from the different types of gear to develop a fish-based index. In this paper, we describe a novel approach to this challenge in reservoirs in Flanders. The developed approach can also be used for natural lakes...
Article
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Background Gene flow and adaptive divergence are key aspects of metapopulation dynamics and ecological speciation. Long-distance dispersal is hard to detect and few studies estimate dispersal in combination with adaptive divergence. The aim of this study was to investigate effective long-distance dispersal and adaptive divergence in the fen orchid...
Conference Paper
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Why this study? In the polder region of SW Netherlands, Belgium and NW France, Marsh Harriers breed in a variety of rather small and often fragmented marshland habitats. Locally the species started to shift to intensive farmland as a nesting habitat. • During the last decade breeding numbers or/and breeding succes have declined in some areas. Yearl...
Article
Red Lists are used to assess the extinction risk of species. Regional IUCN criteria were applied to categorise 42 indigenous freshwater fish species in Flanders into Red List categories. As such, three species are assessed as Regionally Extinct, eight as Critically Endangered, two as Endangered and eight as Vulnerable. A further five species are co...
Article
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SUMMARY Bird-specific ticks do not infest humans and livestock, but these ticks often share their avian hosts with generalist ticks that do. Therefore, their feeding activity may have an impact on the transmission of pathogens outside bird-tick transmission cycles. Here we examined the seasonal feeding activity of the tree-hole tick (Ixodes arboric...
Article
Bioaccumulation of perfluorooctane sulfonate (PFOS) in a restricted terrestrial food chain was investigated with the omnivorous wood mouse (Apodemus sylvaticus) on top of the studied food chain. The levels detected are very high compared with literature as a result of the presence of fluorochemical plant in the immediate vicinity of the study area....
Technical Report
Full-text available
Gene flow and adaptive divergence are key aspects in metapopulation dynamics and ecological speciation. Long-distance dispersal is hard to detect and few studies estimate dispersal in combination with adaptive divergence. The aim of this study was to investigate effective long-distance dispersal and adaptive divergence in the fen orchid (Liparis lo...
Technical Report
Full-text available
Population-ecological research on the hazel dormouse population in Voeren in 2013. [in Dutch]
Conference Paper
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The Marsh harrier (Circus aeruginosus) is listed on Annex I of the EU Bird Directive and thus requires appropriate conservation, in particular of its most suitable breeding areas. Moreover, this species is an interesting study object as it seems to have found a way to cope with agricultural intensification. In some regions, a varying part of the po...
Technical Report
Full-text available
Four years (2009-2012) of population research on the hazel dormouse population in Voeren: experiences with research methods and first results. [in Dutch]
Article
We investigated the accumulation of persistent organic pollutants in damselfly larvae (Ischnura elegans) in sixteen ponds in Flanders (Belgium), widely differing in the surrounding land use. Concentrations of polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), p,p'-dichlorodiphenyldichloroethylene (p,p'-DDE) and hexachlorobenz...
Article
1. Disturbance is one of the most important factors structuring the taxonomic and functional composition of vegetation. Vegetation resistance or resilience to disturbance depends on local environmental conditions, further modifying the pool of species and traits. This paper aims to understand how disturbance and local environment combine to affect...
Article
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The relative importance of body size as a factor in life-history variation is poorly understood in hermaphrodites, especially in reciprocally mating species. Succinea putris is a reciprocally mating land snail with different courtship roles, i.e. an 'active' individual mounts the shell of a 'passive' partner after which penes are intromitted simult...
Article
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Differences in reproductive success (RS) between different groups of individuals are of interest to researchers studying natural and sexual selection. Since it is often not feasible to quantify RS in the wild, researchers make use of proxies instead. One such proxy is clutch size. However, research on species providing parental care (mainly birds a...
Article
This paper is a reply to the criticisms formulated by Halme et al. against a meta-analysis dealing with the effects of forest management on biodiversity. We mainly contradicted the problems of pseudo-replication, distribution of covariable effects, taxonomic generalizations and inclusion criteria. We conclude on the necessity of compromises during...
Article
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Studies on the effects of perfuorooctane sulfonic acid (PFOS) exposure on terrestrial invertebrates are very scarce. Here, we quantifed the effects of PFOS on the number of offspring for two generations of Drosophila hydei Sturtevant 1921 (Diptera:Drosophilidae) reared in the laboratory. The frst generation was exposed to a range of PFOS concentrat...
Article
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Past and present pressures on forest resources have led to a drastic decrease in the surface area of unmanaged forests in Europe. Changes in forest structure, composition, and dynamics inevitably lead to changes in the biodiversity of forest-dwelling species. However, the possible biodiversity gains and losses due to forest management (i.e. anthrop...
Article
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An undescribed species of Oncopodura was found by Leruth (1939) while making his inventory of the fauna of Belgian caves. The 'lost' collection of Collembola specimens of 1932-1934 of Leruth was backtracked by Michel Dethier and eventually recovered from the Museo Nacional de Ciencias Naturales of Madrid in Spain. In the Delhez collection of Belgia...
Chapter
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Dit hoofdstuk focust op de effecten van klimaatveranderingen op de natuur in Vlaanderen. Het is opgebouwd rond volgende hoofdlijnen: • De ontwikkelde Vlaamse klimaatscenario’s wijzen eenduidig op een stijging van de gemiddelde omgevingstemperatuur tegen 2100 met 1,5°C tot 4,4°C in de winter en met 2,4°C tot 7,2°C in de zomer en op meer neerslag tij...
Article
We evaluated whether life-time exposure to PFOS affects egg development, hatching, larval development, survival, metamorphosis and body mass of Enallagma cyathigerum (Insecta: Odonata). Eggs and larvae were exposed to five concentrations ranging from 0 to 10000 microg/L. Our results show reduced egg hatching success, slower larval development, grea...
Article
National or regional conservation strategies are usually based on available species distribution maps. However, very few taxonomic groups achieve a full coverage of the focal region. Distribution data of well-mapped taxonomic groups could help predict the distribution of less well-mapped groups and thus fill gaps in distribution maps. Here, we pred...
Article
Female polymorphism is considered to be maintained through negative frequency-dependent selection imposed by costly male harassment. However, few studies have questioned whether male harassment negatively affects female morph success and does so differently for female morphs, especially in the wild. In the present study, we quantified female morph...
Article
Perfluorooctane sulfonic acid (PFOS) is a persistent and ubiquitous environmental contaminant that has been detected in organisms worldwide. Here, we evaluate whether long-term (1 and 4 months) exposure to PFOS contamination affects the behavioural performance of freshwater larvae of the damselfly Enallagma cyathigerum (Insecta: Odonata). Our resul...
Article
When habitats become fragmented, variation in patch size and quality are expected to impose changes on the spacing pattern and social organization of animal populations. General theory predicts different possible responses including shrinking home ranges (fission response), increasing range overlap (fusion) and incorporation of multiple patches in...
Article
Full-text available
In aerial animals, flight morphology needs to be designed to allow daily behavioural activities. Within species differences in behaviour can therefore be expected to relate to differences in flight morphology, not only between males and females but also between same-sex members when they use different behavioural strategies. In female polymorphic d...
Article
Abstract According to biophysical principles, colour and size are important phenotypic factors that may influence body temperature and activity in ectothermic insects. In taxa showing female-limited polymorphism, males and female morphs differ in body colour, size and activity pattern. However, no previous study has evaluated whether such phenotypi...
Article
Full-text available
Plague surveillance programmes established in Kazakhstan, Central Asia, during the previous century, have generated large plague archives that have been used to parameterize an abundance threshold model for sylvatic plague in great gerbil (Rhombomys opimus) populations. Here, we assess the model using additional data from the same archives. Through...
Article
We studied the effects of population size, plant density, and interpopulation distance on the process of sexual reproduction in experimental populations of the perennial self-incompatible Primula vulgaris (Primulaceae). Decreasing population size significantly reduced the proportion of flowers setting fruit, the seed:ovule ratio, and the overall se...
Article
Full-text available
In many damselfly species a female-limited colour polymorphism is encountered which is assumed to be the result of sexual conflict. Typically, one morph resembles the male's body colouration (andromorph), while the other is dissimilar (heteromorph). Little is known about the extent of temporal variation in female morph proportions at the water wher...