scholarly journals Distribution and Present Numbers of the Tree Frog Hyla Arborea in Zealand Flanders, The Netherlands (Amphibia, Hylidae)

1987 ◽  
Vol 57 (2) ◽  
pp. 151-163 ◽  
Author(s):  
Anton H.P. Stumpel
Keyword(s):  
The Netherlands ◽  
Population Size ◽  
Additional Data ◽  
Tree Frog ◽  
Hyla Arborea ◽  
Methodological Aspects ◽  
The Relationship ◽  
Number Of Males

A distribution survey of Hyla arborea has been carried out in the western part of Zealand Flanders over a period of six years. Additional data on the eastern part and the neighbouring Belgian area have been collected. The relationship between the maximum number of males calling on one evening/night and the estimate of their population size is a suitable basis to predict the total number of males in other pools during a season. Methodological aspects of the fieldwork are discussed. Great fluctuations in presence and activity of the Tree Frog illustrate the need for longterm surveys. Hyla arborea is declining, and nowadays its distribution is restricted to some localities in the western part of the region. These localities are classified according to the number of males and their importance for conservation.

Chorus tenure and estimates of population size of male European tree frogs Hyla arborea: implications for conservation

2005 ◽  
Vol 26 (4) ◽  
pp. 437-444 ◽  
Author(s):  
Ivonne Meuche ◽  
T. Ulmar Grafe
Keyword(s):  
Ambient Temperature ◽  
Population Size ◽  
Mating Success ◽  
Daily Rainfall ◽  
Tree Frog ◽  
Peak Activity ◽  
Male Population ◽  
Hyla Arborea ◽  
Tree Frogs ◽  
Minimum Daily Temperature

AbstractChorusing male anurans typically spend only a part of the breeding season calling although chorus tenure is often the best predictor of mating success. We determined the number of nights males attended a chorus (chorus tenure) and its influence on mating success in the European tree frog, Hyla arborea. The median chorus tenure was 7.5 nights out of a study season of 38 nights. Males that spent more than two nights in the chorus were present for an average of 47% of the nights between their first and last night in the chorus. Minimum daily temperature, ambient temperature at initiation of calling, and daily rainfall explained 37.8% of the variance in male attendance. Twenty-five males were calling on the night of peak activity, a fraction of the 44 males marked. This suggests that estimates of male population size based on peak activity, widely used by conservation biologists, are inaccurate. We suggest that, when mark-recapture methods cannot be used, male population size be calculated by using a regression model based on the peak number of calling males that can be further developed as more data accumulates.

Politics and Identity in Alevi Kurds: An interview with Martin van Bruinessen

2020 ◽  
Vol 8 (1) ◽  
pp. 7-15
Author(s):  
Umit Cetin ◽  
Celia Jenkins ◽  
Suavi AYDIN
Keyword(s):  
The Netherlands ◽  
Left Wing ◽  
Intellectual Engagement ◽  
Religious Dimension ◽  
The Relationship ◽  
Diasporic Communities

This interview with Martin van Bruinessen records his personal and intellectual engagement with Alevis in Turkey and the Netherlands for over fifty years. Initially, his interest was in Anatolian Alevi culture and he began exploring the religious dimension of Alevism in the 1970s at a time when Alevis were more preoccupied with left-wing politics. He charts the emergence of Alevism studies since the 1980s and links it to the religious resurgence and reinvention of diverse ethno-religious Alevi identities associated with urbanised and diasporic communities. He further examines the relationship between Kurdish and Alevi movements and Alevism and Islam.

scholarly journals Citizenship acquisition and spatial stratification: Analysing immigrant residential mobility in the Netherlands

Urban Studies ◽  
2021 ◽  
pp. 004209802110060
Author(s):  
Christophe Leclerc ◽  
Maarten Vink ◽  
Hans Schmeets
Keyword(s):  
The Netherlands ◽  
Housing Market ◽  
Labour Market ◽  
Residential Mobility ◽  
Home Ownership ◽  
Register Data ◽  
Median Income ◽  
High Concentrations ◽  
The Relationship ◽  
Spatial Stratification

Whereas the so-called ‘citizenship premium’ in the labour market has been widely studied, we know little about how naturalisation affects immigrants’ lives beyond work and income. Focusing on the Netherlands, this paper analyses the relationship between citizenship acquisition and immigrant residential mobility, in particular the propensity of immigrants to move away from areas with high concentrations of migrants. We draw on register data from Statistics Netherlands ( N = 234,912). We argue that possessing Dutch citizenship reduces spatial stratification by diminishing the risk of housing market discrimination, thereby facilitating mobility outside of migrant-concentrated areas. Our findings show that naturalised immigrants are 50% more likely to move out of concentrated neighbourhoods, all else constant. The effect of naturalisation is especially relevant for renting without housing benefits and for home ownership, and for mid-risk immigrants who earn around the median income and hold permanent jobs, whose applications face strong scrutiny from landlords, rental agencies and mortgage lenders.

scholarly journals Risk-Taking Behavior and the Consumption of Alcohol Mixed with Energy Drink among Australian, Dutch and UK Students

2021 ◽  
Vol 18 (10) ◽  
pp. 5315
Author(s):  
Sean J. Johnson ◽  
Sarah Benson ◽  
Andrew Scholey ◽  
Chris Alford ◽  
Joris C. Verster
Keyword(s):  
Alcohol Consumption ◽  
The Netherlands ◽  
Risk Taking ◽  
Positive Relationship ◽  
Energy Drinks ◽  
Energy Drink ◽  
Energy Drink Consumption ◽  
Risk Taking Behavior ◽  
The Relationship ◽  
Level Of Risk

The relationship between risk-taking behavior, alcohol consumption and negative alcohol-related consequences is well known. The current analyses were conducted to investigate whether alcohol mixed with energy drink (AMED) is related to risk-taking behavior and if there is a relationship between the amount of energy drink mixed with alcohol consumed, risk-taking behavior and negative alcohol-related consequences. Data from N = 1276 AMED consuming students from the Netherlands, UK and Australia who completed the same survey were evaluated. The analysis revealed that, compared to AMED occasions, on alcohol only (AO) occasions significantly more alcohol was consumed and significantly more negative alcohol-related consequences were reported. On both AO and AMED occasions, there was a strong and positive relationship between amount of alcohol consumed, level of risk-taking behavior and number of reported negative alcohol-related consequences. In contrast, the level of risk-taking behavior was not clearly related to energy drink consumption. Across risk-taking levels, differences in the amount of energy drink consumed on AMED occasions did not exceed one 250 mL serving of energy drink. When correcting for the amount of alcohol consumed, there were no statistically significant differences in the number of energy drinks consumed on AMED occasions between the risk-taking groups. In conclusion, alcohol consumption is clearly related to risk-taking behavior and experiencing negative alcohol-related consequences. In contrast, energy drink intake was not related to level of risk-taking behavior and only weakly related to the number of experienced negative alcohol-related consequences.

The Relationship between Attitudes towards Care and Care Preferences of Elderly Community Residents in the Netherlands

1999 ◽  
Vol 18 (4) ◽  
pp. 493-512 ◽  
Author(s):  
Gina Wielink ◽  
Robbert Huijsman
Keyword(s):  
The Netherlands ◽  
Personnes Âgées ◽  
Personne Âgée ◽  
Community Residents ◽  
The Relationship ◽  
Cette Attitude

RÉSUMÉA l'aide de huit critères mesurant la «réceptivité au soutien informel,» cette étude examine les attitudes de personnes âgées de 65 ans et plus, vivant de façon autonome, par rapport aux soins formels et informels. Ces travaux examinent de plus la relation entre ces attitudes et les préférences quant à la panoplie de soins dans diverses situations (hypothétiques) où les soins nécessaires différent quant à leur nature et leur durée prévue. Au-delà de l'expérience de la personne âgée quant aux soins antérieurement reçus, de ses caractéristiques individuelles et sociales, les attitudes envers les soins s'avèrent être en eux-mêmes un puissant indicateur des préférences des personnes âgées en matière de soins. Les décideurs peuvent utiliser cette attitude envers les soins comme instrument permettant de guider à long terme les préférences et le recours des personnes âgées à ces services de soins.

Relationship of the production of the toxin, cerato-ulmin, to synnemata formation, pathogenicity, mycelial habit, and growth of Ceratocystis ulmi isolates

1980 ◽  
Vol 58 (6) ◽  
pp. 658-662 ◽  
Author(s):  
Shozo Takai
Keyword(s):  
United States ◽  
United Kingdom ◽  
The Netherlands ◽  
Radial Growth ◽  
The United States ◽  
Measurable Quantity ◽  
The United Kingdom ◽  
Relationship Of ◽  
The Relationship

Forty-seven isolates of Ceratocystis ulmi collected from Canada, the United States, the United Kingdom, France, the Netherlands, and Iran were classified with respect to their ability to produce cerato-ulmin (CU) and synnemata, their radial growth, mycelial habit, and pathogenicity.Twenty-nine isolates clearly produced CU in a measurable quantity while 18 isolates produced it only in trace quantities. In general, the former produced fluffy mycelium and were active in synnemata formation. They were aggressive in pathogenicity with one exception. The latter group of isolates generally produced waxy, yeastlike mycelium and formed very few synnemata. They were all nonaggressive in pathogenicity. Radial growth was generally higher among the isolates that produced CU in larger quantities than among those producing CU in trace quantities. The relationship between CU production and pathogenicity affords a method for estimating isolate pathogenicity without the need for host inoculation.

Construction of individual ddRAD libraries v2

2021 ◽  
Author(s):  
Claire Daguin Thiebaut ◽  
Stephanie Ruault ◽  
Charlotte Roby ◽  
Thomas Broquet ◽  
Frédérique Viard ◽  
...  
Keyword(s):  
Magnetic Beads ◽  
Sex Chromosome ◽  
De Novo ◽  
Pcr Amplification ◽  
Restriction Enzymes ◽  
Tree Frog ◽  
Size Selection ◽  
Hyla Arborea ◽  
Sequencing Method ◽  
Sample Representation

This protocol describes a double digested restriction-site associated DNA (ddRADseq) procedure, that is a variation on the original RAD sequencing method (Davey & Blaxter 2011), which is used for de novo SNP discovery and genotyping. This protocol differs from the original ddRADseq protocol (Peterson et al 2012), in which the samples are pooled just after the ligation to adaptors (i.e. before size selection and PCR). The present ddRAD protocol as been slightly adapted from Alan Brelsford's protocol published in the supplementary material of this paper: Brelsford, A., Dufresnes, C. & Perrin, N. 2016. High-density sex-specific linkage maps of a European tree frog (Hyla arborea) identify the sex chromosome without information on offspring sex. Heredity 116, 177–181 (2016). https://doi.org/10.1038/hdy.2015.83 In the present protocol, all samples are treated separately, in a microplate, until final PCR amplification performed before pooling. Despite being slightly more costly and time-consuming in the lab, it allows for fine adjustement of each sample representation in the final library pool, ensuring similar number of sequencing reads per sample in the final dataset. Briefly, genomic DNA from the samples are individually digested with 2 restriction enzymes (one rare-cutter and one more frequent cutter) then ligated to a barcoded adaptor (among 24 available) at one side, and a single adaptor at the other side, purified with magnetic beads, and PCR-amplified allowing the addition of a Illumina index (among 12 available) for multiplexing a maximum of 288 sample per library. Samples are then pooled in equimolar conditions after visualisation on an agarose gel. Purification and size selection is then performed before final quality control of the library and sequencing.

Tenses in 19th-century Dutch sentence-grammar

1988 ◽  
Vol 15 (1-2) ◽  
pp. 187-205
Author(s):  
J. A. Le Loux-Schuringa
Keyword(s):  
The Netherlands ◽  
19Th Century ◽  
Morphological Form ◽  
Other Information ◽  
Dutch Language ◽  
One To One ◽  
The 19Th Century ◽  
The Relationship

Summary In this paper some theories on tenses are described. These theories appeared in the Netherlands in the first half of the 19th century. The purpose is not just describing the different tense-systems of P. Weiland (1805), W. Bilderdijk (1826), W. G. Brill (1846) and L. A. te Winkel (1866). In the first half of the 19th century some fundamental changes took place. It is shown that these changes are based upon continuity of research of time and tense in the Dutch tradition. This continuity is found on three levels: (a) The research was concentrated on the verbal forms, no other information from the sentence was used. (b) The grammarians took the relationship between linguistic forms and logical categories as a one-to-one relation. (c) The morphological form of the Dutch language determined the grammatical representation of the tense-systems more and more.

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