zoekresultaten
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The monitoring of hibernating bats in marl quarries in the period 1979–2020
Abstract: This paper describes the trend of bats hibernating in marl quarries in the south of Limburg, the Netherlands, since 1986 and puts it into perspective by comparing it with the trend between 1940 and 1980, as described earlier by Daan (1980). There was a general decline in bat numbers during -
Long-term trends of bats hibernating in small artificial hibernacula in northern Limburg and population dynamics explained by climatic conditions
Abstract: Hibernation site selection by bats depends on various environmental and physiological factors, microclimatic conditions, and species-specific requirements. For successful overwinter survival, efficient use of stored fat reserves is crucial. Current predicted climate change may alter -
Effects on hibernating bats of ambient temperatures and the characteristics of winter roosts in a dune area
Abstract: The Dutch dune areas between Zandvoort and Bergen aan Zee contain various sites, such as bunkers and ice cellars, in which bats hibernate. The bats in these sites are counted annually each winter. This study investigates whether the ambient temperatures and other characteristics of these -
Lutra Special 65 (1)- Preface
The winter of 2021 was a special anniversary for bat counts in hibernacula in the Netherlands. It was 40 years after a first overview (in 1980) of the counts in the Netherlands and (almost) 25 years after the start of the National Ecological Monitoring Scheme (NEM) of bat hibernacula, but it was -
Hibernating bats in Flemish marlland: an overview of the period 1989-2020
Abstract: Twenty six different marl quarries in Flanders are checked annually for hibernating bats, 18 in the Meuse basin and eight in the Scheldt basin. Most of the quarries were created in the second half of the 16th Century through the extraction of marl as a building material and as a raw -
Hibernating bats along the Dutch coast
Abstract: Hibernating bats along the coast of the Dutch provinces of Noord-Holland, Zuid-Holland and Zeeland are described from the first counts in the early 1960s until the winter of 2020, with an emphasis on trends since 1990. The main hibernacula complexes are located in the Natura 2000 dune -
A hibernating greater horseshoe bat (Rhinolophus ferrumequinum) in the mainland coastal dunes of Zuid-Holland
In response to a number of reports of break ins at various places along the coast of Zuid-Holland, an enforcement check by Buitengewoon Opsporings Ambtenaar (BOA / community service officer) J.A. Dijkhuizen took place on 28 January 2021 in a small number of accessible bunkers in the Natura 2000 area -
Annual numbers of hibernating Daubenton’s bats (Myotis daubentonii) and pond bats (M. dasycneme) in the dune areas of Meijendel and Uilenbosch
Abstract: Since the winter of 1977, the populations of hibernating bats have been monitored in five complexes of bunker corridors of the former Atlantic Wall remaining from World War II in the dune areas of Meijendel and Uilenbosch, which are located in the municipalities of Wassenaar and The Hague -
Automated long-term registration of bat activity at Fort Steendorp (Flanders, Belgium)
Abstract: Fort Steendorp (east of Temse, East Flanders, Belgium) is a large former military brick fortification, which is nowadays one of the most important bat hibernation sites in Flanders. The fortification is part of two, 19th and early 20th century defensive ‘belts’ of fortifications around the -
Hibernating bats in the Amsterdamse Waterleidingduinen
Abstract: This article discusses the results of 35 years of research (1986-2020) on hibernating bats in the Amsterdamse Waterleidingduinen (Amsterdam Water Supply Dunes; AWD), the Netherlands. About 70 bunkers are surveyed every January. Bat counts have steadily increased to a maximum of 265 in 2011 -
Hibernating bats in the Netherlands in 1986-2020, based on the National Monitoring Scheme of Bat Hibernacula
Abstract: Bats have been studied in their underground winter quarters in the Netherlands (and Flanders) since the 1930s. Over time, the focus has shifted from ecological and physiological research to monitoring. In the Netherlands these counts have been done as part of the National Monitoring Scheme -
A method for actively surveying mass hibernation sites of the common pipistrelle (Pipistrellus pipistrellus) in the urban environment
Abstract: Common pipistrelles ( Pipistrellus pipistrellus) congregate in mass-hibernacula, sometimes with hundreds to thousands of individuals. In the urban environment, these hibernacula are often situated in crevices and other spaces in buildings with poor insulation. Efforts to reduce carbon -
Eighty years of hibernation surveys: from banding to monitoring and protection
Forty years ago, a collective of authors described the population trends of a number of bat species in the Netherlands in a special issue of Lutra: ‘The Dutch bats: population trends in winter and summer roosts’ (Daan et al. 1980). The motivation for this special issue was the legal protection -
Hibernating bats at Klein Heidekamp (Schaarsbergen, Arnhem, the Netherlands)
Abstract: The Klein Heidekamp complex is a military encampment functionally connected with the Deelen air force base, north of Arnhem, the Netherlands. Bats hibernate here in two rather large cellars (670 and 375 m3), in the remains of a destructed large building, and in two smaller sites (120 and -
Hibernating bats in fortifications of the New Dutch Waterline 1980-2020: The ups and downs of a dynamic co-existence of natural and cultural heritage
Abstract: Man-made structures are quite important for bats in a country like the Netherlands with hardly any natural rocks or caves. This paper describes the use that hibernating bats make of buildings that were originally put up for military purposes: the fortifications of the New Dutch Waterline -
The relationship between the numbers of hibernating brown long-eared bats (Plecotus auritus) and weather conditions (ambient temperatures and precipitation)
Abstract: This study investigates the relationship between outdoor temperatures, periods of prolonged precipitation and the numbers of brown long-eared bats ( Plecotus auritus) in hibernacula during the annual bat census. It draws on census data from three complexes: in the Amsterdamse -
Bats in the Voorberg and the Jezuïetenberg
Abstract: The numbers of hibernating bats in the Voorberg-Jezuïetenberg marl quarry complex, southwest of Maastricht, were monitored between 1987 and 2020 by means of annual counts at the turn of the year. The numbers counted in that period grew from 30 to 99, mainly as the result of an increase in -
Zoogdier_Jaargang_29_4_2018_Winter
Achtergrondinformatie bij de artikelen in deze Zoogdier is te vinden in Zoogdier digitaal 29-4.