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Showing 1 to 20 of 54 for “"plant ecology"”.
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Insights in plant ecology from Bromus tectorum invasion in the Great Basin, USA
… is examined. Specifically, the ability of plant species to induce changes in a subsequent generation of plants through alteration of the soil environment via soil nutrient dynamics, soil microbial community, and allelopathic deposition is examined in a greenhouse study. Although these …
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The general continuum model for structured populations, with two case studies in plant ecology
… and usefulness of a very general model for plant population dynamics. In chapter 1, the goal of generality is discussed, particularly in the light of the lack of interaction between field and experimental population studies on the one hand and theoretical population dynamics on the other …
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Plant ecology of the Namaqualand Strandveld : community structure and dynamics in a winter-rainfall desert
… Namaqualand has a very unusual diversity of plant life. Firstly it is unusually diverse in the most basic sense - there are lots of species, and many of them are endemic. Secondly, the ratio of species diversity to functional diversity is very high (i.e. there appears to be a great deal of …
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Investigation into the plant ecology of the Karstland area in Namibia : with particular reference to the proposed large-scale abstraction of groundwater
… with respect to possible negative effects on the plant ecology of that area. Although it was thought improbable that the lowering of the groundwater table would result in the deterioration of the vegetation, it was considered necessary to examine the existing vegetation status in order to …
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Plant traits and drought tolerance in the savanna : a Kruger National Park case study
One of the central goals of plant ecology is to understand the factors that control the local distribution of plant species and thus the composition of communities. The aim of this study is to determine plant functional traits that can be associated with drought tolerance/avoidance and to test …
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Efeito do extrato aquoso das folhas de Nim indiano (Azadirachta indica) sobre o crescimento inicial de plantas daninhas.
… is a biological phenomenon that occurs when a plant species releases to the environment substances that may inhibit germination and / or establishment of other plant species and has potential application in agricultural ecosystems. The aim of the study was to evaluate the occurrence of …
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Efeito do extrato aquoso das folhas de nim indiano (Azadirachta indica) sobre o crescimento inicial de plantas daninhas.
… is a biological phenomenon that occurs when a plant species releases to the environment substances that may inhibit germination and / or establishment of other plant species and has potential application in agricultural ecosystems. The aim of the study was to evaluate the occurrence of …
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Eficiência alelopática de algumas espécies vegetais sobre o amendoim e plantas daninhas
… is an interference phenomenon where a chemical plant can inhibit the development with also can stimulate the growth of others and has been considered its application in weed control in commercial crops. This study aimed to evaluate the allelopathic potential of some species on germination of …
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The intertidal and shallow subtidal food web of sub-antarctic Marion Island
… been undertaken in the fields of ornithology, plant ecology, mammalogy and limnology. Marine biological research has been relatively neglected and at the outset of the present project the only work available on the Marion Island littoral fauna, apart from various taxonomic reports, was that of …
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Effects of Elevated Atmospheric CO2 on Root Dynamics, Biomass and Architecture in a Scrub-Oak Ecosystem at Kennedy Space Center, Florida
<p>A major gap in whole-plant ecology lies with our understanding of root system growth, function and distribution. Large belowground structures, in addition to fine roots, are of particular interest because of their role in carbon sequestration. Non-destructive methods, including …
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Caracterização biométrica de frutos, emergência e vigor de sementes de Cryptostegia madagascariensis bojer ex decne., espécie invasora no bioma caatinga
… experiments were performed at the Laboratory of Plant Ecology, Centre for Agrarian Sciences, Federal University of Paraiba. Essay I: fruits and seeds were collected and had their dimensions measured, accounting is still the number of seeds per fruit and fresh fruit and seeds; Essay II: effect of …
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Efeitos de resíduos foliares de Prosopis juliflora na germinação e crescimento inicial de espécies cultivadas.
… in a BOD chamber located in the Laboratory of Plant Ecology (12h light: 12h dark, at 25 °C), with a total duration of 14 days. To evaluate the allelopathic effect, were incorporated into the substrate (washed sand and soil in 1:1 ratio) in different concentrations of leaf residues dehydrated. …
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The Influence of Biogeography and Mating System on the Ecology of Desert Annual Plants
A major challenge in plant ecology is in understanding how species strategies mediate interactions between the environment and fitness. Variation in niche strategies that affect phenological, physiological, and reproductive traits will allow species to partition resources differently in space and …
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Quantifying and Simulating Fine-Scale Spatial Patterns in Plant Populations
<p>Plant ecology as a discipline has increasingly acknowledged the importance of fine-scale spatial patterns in developing our understanding of community/population dynamics. These spatial patterns are largely determined by direct and indirect interactions between plants and their immediate …
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Effects of plant diversity on the stability of natural grassland ecosystem functioning
Contains fulltext : 175733.pdf (Publisher’s version ) (Open Access)
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The importance of being connected : induced resistance to herbivory in Trifolium repens networks
Contains fulltext : 72483.pdf (Publisher’s version ) (Open Access)
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The Role of Temperature in the Seed Germination Ecology of Mountain Springs and Fens
… groundwater. This thesis studies their seed ecology, focusing on the interaction between environmental temperature and germination. To this end we conduct laboratory germination experiments with calcareous spring fen species to characterize the temperature dimension of the germination niche …
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Post-management vegetation change in upland heather moorland, with particular reference to the nutrient status of soils : Lake Vyrnwy Estate, Powys, Mid Wales
… as a method for determining the age of Calluna plants in each treatment category from which the efficiency of different methods of removing the Calluna canopy was assessed. Multivariate methods of classification (TWINSPAN) and indirect gradient analysis (DECORANA) were used to reveal pattern in …
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Habitat segregation of Pond bats - consequences for reproduction, commuting, hibernation, predation and diet
Contains fulltext : 296594.pdf (Publisher’s version ) (Open Access)
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