Sampling-Design Effects on Properties of Species-Area Relationships – A Case Study from Estonian Dry Grassland Communities

2008 ◽  
Vol 43 (3) ◽  
pp. 289-304 ◽  
Author(s):  
Jürgen Dengler ◽  
Steffen Boch
Keyword(s):  
Sampling Design ◽  
Dry Grassland ◽  
Design Effects ◽  
Species Area ◽  
Grassland Communities

A Nested Analysis of Electoral Donations

2016 ◽  
Vol 11 (1) ◽  
pp. 77-98 ◽  
Author(s):  
Nubia Evertsson
Keyword(s):  
Sampling Design ◽  
Sequential Sampling ◽  
Case Study Research ◽  
Apparent Paradox ◽  
National Examination ◽  
Large N ◽  
Sequential Sampling Model ◽  
Nested Analysis ◽  
Cross National

This article reports the results of a nested analysis conducted to evaluate whether or not electoral donations are considered legal bribes. Introduced by Lieberman, nested analysis brings together the strengths of the regression analysis and the case study research by integrating large- N approaches (LNA) with small- N approaches (SNA). The nested analysis uses a sequential sampling model (QUANTITATIVE → QUALITATIVE) and a nested sampling design (case selection “on/off the line”). Here, Lieberman’s original model was extended to deal with an apparent paradox that emerged from the analysis. This inquiry included a cross-national examination among 78 countries, denoted as LNA, followed by an intranational analysis conducted in Colombia, where an SNA survey with 302 respondents and an SNA case study were carried out.

scholarly journals The Opportunity of Understorey Species to Absorb Secondary Metabolites in the Soil (Case Study in IUPHHK- Industrial Plantation Forests PT. Toba Pulp Lestari, Tbk)

2020 ◽  
Vol 3 (01) ◽  
pp. 40-45
Author(s):  
Simon Sidabukke ◽  
Ternala Alexander Barus ◽  
Budi Utomo ◽  
Delvian ◽  
Mona Fhitri Srena
Keyword(s):  
Secondary Metabolites ◽  
Secondary Metabolism ◽  
Soil Analysis ◽  
Vegetation Analysis ◽  
Plantation Forests ◽  
Industrial Plantation ◽  
Species Area ◽  
North Sumatra ◽  
Industrial Forestry

PT. Toba Pulp Lestari, Tbk is one of the industrial forestry companies with Eucalyptus as the main species. This research was conducted in a concession area located in Aek Nauli Plantation, Simalungun Regency, North Sumatra with an area of 22,533 Ha. The sample of this research is understorey species (height: 1.5 meters) under Eucalyptus stand in cycles 2, 3, 4 and 5 planted in 2015. To find out the composition of plant species, vegetation analysis was conducted initially by making minimum species-area curves to determine the number of plots. The placement of the sample starts with randomly distributed on plotted paths. The number of plots in each cycle is as many as 32 plots, 32 plots, 32 plots, 4 plots by 256 plots and 5 plots for 32 plots. The results of soil analysis found that secondary metabolic in eucalyptus soil classified into terpenoid which located at a distance of 50 cm (flat) and 100 cm (flat) from the tree at 2 years old Eucalyptus stand. The terpenoids also distributed in distance of 50 cm from trees with flat topography on 4 years old Eucalyptus stand. For 6 years old Eucalyptus stand, terpenoid distributed on 150 cm from a tree and there was also a saponin within 150 cm from a tree with sloping topography. If the dominant undergrowth grows were Strong and Senduduk, the secondary metabolism in the soil will be absorbed by this species.

A comparison of systematic versus stratified-random sampling design for gradient analyses: a case study in subalpine Himalaya, Nepal

2012 ◽  
Vol 42 (3-4) ◽  
pp. 191-202 ◽  
Author(s):  
Kuber Prasad Bhatta ◽  
Ram Prasad Chaudhary ◽  
Ole Reidar Vetaas
Keyword(s):  
Random Sampling ◽  
Sampling Design ◽  
Stratified Random Sampling

scholarly journals The optimal sampling design for littoral habitats modelling: A case study from the north-western Mediterranean

PLoS ONE ◽  
2018 ◽  
Vol 13 (5) ◽  
pp. e0197234 ◽  
Author(s):  
Maria Elena Cefalì ◽  
Enric Ballesteros ◽  
Joan Lluís Riera ◽  
Eglantine Chappuis ◽  
Marc Terradas ◽  
...  
Keyword(s):  
Sampling Design ◽  
Western Mediterranean ◽  
Optimal Sampling ◽  
The North ◽  
Optimal Sampling Design ◽  
North Western ◽  
Littoral Habitats

Sampling design for integrated noncash and economic valuation of biodiversity – case study

2012 ◽  
Vol 43 (4) ◽  
pp. 145-152 ◽  
Author(s):  
J. Merganič ◽  
R. Marušák ◽  
K. Merganičová ◽  
L. Tipmann ◽  
R. Stolariková ◽  
...  
Keyword(s):  
Sampling Design ◽  
Economic Valuation

Spatial pattern in dry grassland communities of the Central Alps and its ecophysiological significance

Vegetatio ◽  
1983 ◽  
Vol 54 (3) ◽  
pp. 143-151 ◽  
Author(s):  
B. Erschbamer ◽  
G. Grabherr ◽  
H. Reisigl
Keyword(s):  
Spatial Pattern ◽  
Central Alps ◽  
Dry Grassland ◽  
Grassland Communities
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