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environmental variables

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1

1 plant methods

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Bibliographies

16

1 Methodological approach for predicting and mapping the phenological adaptation of tropical maize ( L.) using multi-environment trials.

2 characterization of the spawning area of tuna species on the northern tunisian coasts

3 controlling factors of benthic macroinvertebrates distribution in a small tropical pond, lateral to the paranapanema river (são paulo, brazil) macroinvertebrados bentônicos e fatores controladores de sua distribuição em uma pequena lagoa tropical adjacente ao rio paranapanema (são paulo, brasil)

4 fish assemblage structure in the chishui river, a protected tributary of the yangtze river

5 phytoplankton distribution and their relationship to environmental variables in sanya bay, south china sea

6 Association Between Suicide and Environmental Variables in the North of Spain: A 14-Year Analysis.

7 Perception of stress in aging: the role of environmental variables and appraisal of the life experiences on psychological stress

8 Socio-economic, macroeconomic, demographic, and environmental variables as determinants of child mortality in South Asia.

9 INTRODUCTION A National park is an area set aside by a national government for the preservation of the natural environment. The World Conservation Union defines a National park as a natural area designated to protect the ecological integrity of one or more ecosystems for present and future generations. In Pakistan, the earlier ecological studies were generally observational. The earlier studies, generally appeared in 1950’s, were confined to visual description of the vegetation, and no attempts were made to recognize community types and to correlate them with the relevant environmental factors. On the contrary, advanced multivariate techniques of ordination and cluster analysis had been routinely used in Europe and other parts of the world. There are numerous ordination methods accessible in plant bionetwork, some of which have been extensively used, e.g. Principal Component Analysis (PCA) and Detrended Correspondence Analysis (DCA) (Hill & Gauch, 1980), whereas some others only sporadically used (Zhang, 2004). A series of studies using different ordination techniques were carried out in Pakistan by Ahmad et al., 2009; Ahmad, 2009; Jabeen & Ahmad, 2009; Pirzada et al., 2009; Ahmad et al., 2010a, b; Ahmad, 2011. In Canonical Correspondence Analysis (CCA) the floristic statistics and the environmental variables can be assimilated within the ordination (Kashian et al., 2003). Within the Ayubia National Park, the study area was the moist temperate forest in Rawalpindi, NE-Pakistan (Fig. 1), showing a high diversity of susceptible plant and animal species. The geographical location of the park is 330° 52' N and 730° 90' E (Farooque, 2002). The aim of this research was to quantify the vegetation in Ayubia National Park using ordination techniques and to determine the soilvegetation relationship to provide basic awareness for preservation of nationally significant native flora. A list of plant species present in the study area is provided in Table 1. Apart from their importance from ecological point of view few species are used as medicinal herbs by local inhabitants. Observed biodiversity of occuring species indicate that this area can be used for conservation of native flora. Exploring the vegetation dynamics and community assemblage in Ayubia National Park, Rawalpindi, Pakistan, using CCA

10 effects of some environmental variables on urease in germinating chickpea (cicer arietinum l.) seed

11 variations in carabidae assemblages across the farmland habitats in relation to selected environmental variables including soil properties

12 A Robot Hybrid Hierarchical Network for Sensing Environmental Variables of a Smart Grid.

13 multiscale interactions betweenwater and carbon fluxes and environmental variables in a central u.s. grassland

14 generalized models: an application to identify environmental variables that significantly affect the abundance of three tree species

15 the effects of operational and environmental variables on efficiency of danish water and wastewater utilities

16 hepatite a no município do rio de janeiro, brasil: padrão epidemiológico e associação das variáveis sócio-ambientais. vinculando dados do sinan aos do censo demográfico hepatitis a in the city of rio de janeiro, brazil: epidemiological pattern and socio-environmental variables. cross-analysis of sinan and population census data