Changes in the flora and vegetation of the coastal dunes of Voorne (The Netherlands) in relation to environmental changes

Vegetatio ◽  
1985 ◽  
Vol 61 (1-3) ◽  
pp. 87-95 ◽  
Author(s):  
Dick Laan
2016 ◽  
Vol 24 (1) ◽  
pp. 31-40 ◽  
Author(s):  
Emilia Miszewska-Urbańska

Abstract The aim of the article is to identify factors that determine the development and management models of floating housing development in the analyzed countries. The author indicates factors determining the possibility of settling on bodies of water in Poland, and restrictions connected with this type of development, as well as the need for specialized persons and companies ready to meet the challenges of the modern management of hydro-technical facilities, including floating housing development. In Western Europe, living on water is gaining in popularity. People have begun to dwell on water because of rising land prices, congestion in cities and work related to the use of rivers for the transport of goods. The popularity of housing on water in the Netherlands results from environmental conditions. About 60% of the Netherlands is below the sea level. For hundreds of years, the population of the Netherlands has been battling with the elements, while being exposed to continuously rising sea levels, which has been a consequence of the greenhouse effect. Environmental changes have caused a change in government policy, which began to support construction activity on water, adapted regulations and changed office holders. In North America, especially in the United States, the identification of residents with their neighborhoods of houses on water is so high that it has resulted in the formation of communities uniting owners of residential watercrafts, who have succeeded in homes on water becoming recognized as real estate and, consequently, now have the same rights as residents of houses on land. In Poland, housing estates on water are slowly gaining popularity but no factors determining the development of this type of settlement have been established. An analysis of the situation in Poland reveals many factors limiting the functional use of houses on water and a lack of specialists in the management of hydro-technical facilities. Therefore, on the basis of examples of countries in Western Europe and North America given in this article, the author tries to define the responsibilities of managers and an appropriate management model for housing estates on water in Poland, as well as indicate problems with the development of housing on water and their possible solutions.


1996 ◽  
Vol 31 (4) ◽  
pp. 433-451 ◽  
Author(s):  
Wojciech Szwed ◽  
Karle V. Sýkora

2011 ◽  
Vol 38 (8) ◽  
pp. 717 ◽  
Author(s):  
A. J. van Strien ◽  
J. J. A. Dekker ◽  
M. Straver ◽  
T. van der Meij ◽  
L. L. Soldaat ◽  
...  

Context Wild rabbits are considered a key species in the coastal dunes of the Netherlands, but populations have collapsed as a result of viral diseases. Aim We studied to what extent population collapse led to local extinction and whether recolonisation of empty patches in the dunes happened. Methods We investigated occupancy dynamics using data of 245 transects where rabbits were surveyed in 1984–2009. Dynamic site-occupancy models were used to analyse the data. These models adjust for imperfect detection to avoid bias in occupancy-trend estimation. Key results The decline of the rabbit population has resulted in many local extinctions, especially in woodland and in the northern part of the coastal dunes. Most transects along grassland and mixed vegetation have recently been reoccupied. The recovery of woodland occupancy is slow, probably not because of limited dispersal capacity of rabbits, but because the quality of woodland habitats is poor. Detection probability of rabbits varied considerably over the years and among habitat types, indicating the necessity of taking detection into account. Rabbits were slightly better detected when it was cloudy, windy and rainy and when lunar phase approached new moon. Conclusion Extinction and recolonisation of habitat patches varied considerably among habitat types. Implications The current slow recolonisation hampers the recovery of rabbit populations in woodland habitats in the Dutch coastal dunes. Furthermore, monitoring rabbit occupancy should take imperfect detection into account to avoid biased results.


1998 ◽  
Vol 86 (3) ◽  
pp. 511-526 ◽  
Author(s):  
A. M. Kooijman ◽  
J. C. R. Dopheide ◽  
J. Sevink ◽  
I. Takken ◽  
J. M. Verstraten

Parasitology ◽  
2010 ◽  
Vol 138 (2) ◽  
pp. 215-223 ◽  
Author(s):  
S. M. WALKER ◽  
C. JOHNSTON ◽  
E. M. HOEY ◽  
I. FAIRWEATHER ◽  
F. BORGSTEEDE ◽  
...  

SUMMARYAn evaluation of the genetic diversity within Fasciola hepatica (liver fluke) may provide an insight into its potential to respond to environmental changes, such as anthelmintic use or climate change. In this study, we determined the mitochondrial DNA haplotypes of >400 flukes from 29 individual cattle, from 2 farms in the Netherlands, as an exemplar of fasciolosis in a European context. Analysis of this dataset has provided us with a measure of the genetic variation within infrapopulations (individual hosts) and the diversity between infrapopulations within a herd of cattle. Temporal sampling from one farm allowed for the measurement of the stability of genetic variation at a single location, whilst the comparison between the two farms provided information on the variation in relation to distance and previous anthelmintic regimes. We showed that the liver fluke population in this region is predominantly linked to 2 distinct clades. Individual infrapopulations contain a leptokurtic distribution of genetically diverse flukes. The haplotypes present on a farm have been shown to change significantly over a relatively short time-period.


1999 ◽  
Vol 5 (1) ◽  
pp. 59-68 ◽  
Author(s):  
A. J. de Bonte ◽  
A. Boosten ◽  
H. G. J. M. van der Hagen ◽  
K. V. Sýkora

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