Shoot biomass and species richness in relation to some environmental factors in a coastal dune area in The Netherlands

Vegetatio ◽  
1985 ◽  
Vol 63 (3) ◽  
pp. 129-132 ◽  
Author(s):  
P. G. L. Klinkhamer ◽  
T. J. Jong
Keyword(s):  
Species Richness ◽  
Environmental Factors ◽  
The Netherlands ◽  
Coastal Dune ◽  
Shoot Biomass ◽  
Dune Area

The development of blowouts in ‘de blink’, a coastal dune area near Noordwijkerhout, The Netherlands

1981 ◽  
Vol 6 (3-4) ◽  
pp. 375-396 ◽  
Author(s):  
P. D. Jungerius ◽  
A. J. T. Verheggen ◽  
A. J. Wiggers
Keyword(s):  
The Netherlands ◽  
Coastal Dune ◽  
Dune Area

Identification of environmental factors affecting the speed of purebred Arabian racehorses in The Netherlands

2009 ◽  
Vol 125 (1) ◽  
pp. 97-100 ◽  
Author(s):  
A. Schurink ◽  
M.C.J. Theunissen ◽  
B.J. Ducro ◽  
P. Bijma ◽  
E.M. van Grevenhof
Keyword(s):  
Environmental Factors ◽  
The Netherlands ◽  
Factors Affecting

scholarly journals Correction: Pattern or process? Evaluating the peninsula effect as a determinant of species richness in coastal dune forests

PLoS ONE ◽  
2018 ◽  
Vol 13 (5) ◽  
pp. e0197623 ◽  
Author(s):  
Pieter I. Olivier ◽  
Victor Rolo ◽  
Natasha Visser ◽  
Rudi J. van Aarde
Keyword(s):  
Species Richness ◽  
Coastal Dune

scholarly journals Fish species diversity in headwaters streams of Paraguay and Paraná Basins

2007 ◽  
Vol 50 (6) ◽  
pp. 1033-1042 ◽  
Author(s):  
Yzel Rondon Súarez ◽  
Sabrina Bigatão Valério ◽  
Karina Keyla Tondado ◽  
Alexandro Cezar Florentino ◽  
Thiago Rota Alves Felipe ◽  
...  
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Environmental Factors ◽  
Fish Species ◽  
Total Species Richness ◽  
Paraná Basin ◽  
Parana Basin ◽  
Number Of Individuals ◽  
Total Species ◽  
Fish Species Diversity

The influence of spatial, temporal and environmental factors on fish species diversity in headwater streams in Paraguay and Paraná basins, Brazil was examined. A total of 4,605 individuals were sampled, distributed in 60 species. The sampled streams in Paraná basin presented a larger total species richness (42) than Paraguay streams (40). However the estimated richness was larger in Paraguay basin (53) than Paraná streams (50). The streams of Paraná basin had a greater mean species richness and evenness, while more individuals per sample were found in the Paraguay basin. Difference between the sub-basins were found in the Paraguay basin, while for the basin of Paraná, richness and evenness vary significantly between the sub-basins, but the number of individuals varied seasonally. The most important environmental factors to species diversity and abundance were altitude, water temperature, stream width and stream depth for both the basins.

scholarly journals Spatial pattern of riparian plants along stream order among mountain rivers in China

2018 ◽  
Vol 9 (2) ◽  
pp. 322-330
Author(s):  
Rong Sun ◽  
Xiaojie Luo ◽  
Xiangyu Meng ◽  
Yan Wang
Keyword(s):  
Species Richness ◽  
Environmental Factors ◽  
Tree Species ◽  
Riparian Vegetation ◽  
Stream Order ◽  
River Continuum ◽  
Riparian Plants ◽  
Tree Species Richness ◽  
Riparian Species ◽  
Significant Difference

Abstract The streams in a watershed form a hierarchical network system. From the perspective of the river continuum, this classification system is the result of gradual increase in traffic. This study analyzed the riparian species richness, diversity and environmental factors along a six-order hierarchical mountain river in the Donghe watershed, China. A total of 34 sampling sites were sampled to study the spatial distribution of riparian plants among different stream orders. The results showed: Environmental factors among stream orders had significant differences. Among stream order, species richness showed remarkable differences. The species richness rose firstly and dropped afterwards except for tree species richness; tree species richness decreased while stream order increased. The same is true for shrub quadrat species richness. Shannon-Wiener diversity, Simpson dominance and Pielou uniformity showed significant difference among stream orders; Shannon-Wiener diversity rose firstly then dropped afterwards. For integrated environmental factors and community characteristics, we found the changes of stream orders had a significant impact on riparian habitats and riparian vegetation. Further analysis showed that riparian vegetation experienced different types and degrees of disturbance in different stream orders. This meant that a hierarchical management strategy should be applied to riparian vegetation management.

Exploring the relationships between landscape complexity, wild bee species richness and reproduction, and pollination services along a complexity gradient in the Netherlands

2017 ◽  
Vol 214 ◽  
pp. 312-319 ◽  
Author(s):  
Tibor Bukovinszky ◽  
Joke Verheijen ◽  
Susan Zwerver ◽  
Esther Klop ◽  
Jacobus C. Biesmeijer ◽  
...  
Keyword(s):  
Species Richness ◽  
The Netherlands ◽  
Pollination Services ◽  
Landscape Complexity ◽  
Wild Bee

scholarly journals On the Etiology of Aesthetic Chills: a Behavioral Genetic Study

2021 ◽  
Author(s):  
Giacomo Bignardi ◽  
Rebecca Chamberlain ◽  
Sofieke T Kevenaar ◽  
Zenab Tamimy ◽  
Dorret I Boomsma
Keyword(s):  
Individual Differences ◽  
Environmental Factors ◽  
The Netherlands ◽  
Genetic Study ◽  
Genetic Model ◽  
Physiological Factors ◽  
Somatic Marker ◽  
Show Evidence ◽  
Sources Of Variation ◽  
Behavioral Genetic Study

Aesthetic chills, broadly defined as a somatic marker of peak emotional-hedonic responses, are experienced by individuals across a variety of human cultures. Yet individuals vary widely in the propensity of feeling them. These individual differences have been studied in relation to demographics, personality, and neurobiological and physiological factors, but no study to date has explored the genetic etiological sources of variation. To partition genetic and environmental sources of variation in the propensity of feeling aesthetic chills, we fitted a biometrical genetic model to data from 14127 twins (from 8995 pairs), collected by the Netherlands Twin Register. Both genetic and unique environmental factors accounted for variance in aesthetic chills, with heritability estimated at .36 ([.33, .39] 95% CI). We found females more prone than males to report feeling aesthetic chills. However, a test for genotype x sex interaction did not show evidence that heritability differs between sexes. We thus show that the propensity of feeling aesthetic chills is not shaped by nurture alone, but it also reflects underlying genetic propensities.

Relating initial paraquat injury to final efficacy in selected weed species influenced by environmental conditions

2020 ◽  
pp. 1-10
Author(s):  
Nick T. Harre ◽  
Garth W. Duncan ◽  
Julie M. Young ◽  
Bryan G. Young
Keyword(s):  
Environmental Factors ◽  
Negative Relationship ◽  
Injury Rate ◽  
Time Of Day ◽  
Palmer Amaranth ◽  
Shoot Biomass ◽  
Lag Phase ◽  
Progression Rate ◽  
Weed Species ◽  
Time Of Application

Abstract Weed control of paraquat can be erratic and may be attributable to differing species sensitivity and/or environmental factors for which minor guidance is available on commercial labels. Therefore, the objectives of this research were to quantify selectivity of paraquat across select weed species and the influence of environmental factors. Experiments were performed under controlled conditions in the greenhouse and growth chamber. Compared with purple deadnettle (dose necessary to reduce shoot biomass by 50% = 39 g ai ha−1), waterhemp, Palmer amaranth, giant ragweed, and horseweed were 4.9, 3.3, 1.9, and 1.3 times more sensitive to paraquat, respectively. The injury progression rate over 3 d after treatment (DAT) was a more accurate predictor of final efficacy at 14 DAT than the lag phase until symptoms first appeared. For example, at the 17.5 g ha−1 dose, the injury rate of waterhemp and Palmer amaranth was, on average, 3.6 times greater than that of horseweed and purple deadnettle. The influence of various environmental factors on paraquat efficacy was weed specific. Applications made at sunrise improved control of purple deadnettle over applications at solar noon or sunset. Lower light intensities (200 or 600 μmol m−2 s−1) surrounding the time of application improved control of waterhemp and horseweed more than 1,000 μmol m−2 s−1. Day/night temperatures of 27/16 C improved horseweed and purple deadnettle control compared with day/night temperatures of 18/13 C. Though control was positively associated with injury rates in the application time of day and temperature experiments, a negative relationship was observed for waterhemp in the light-intensity experiment. Thus, although there are conditions that enhance paraquat efficacy, the specific target species must also be considered. These results advocate paraquat dose recommendations, currently based on weed height, be expanded to address sensitivity differences among weeds. Moreover, these findings contrast with paraquat labels stating temperatures of 13 C or lower do not reduce paraquat efficacy.

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