Blog Post 7: Theoretical Perspectives

My research project aims to validate a pattern I observed, that Common snowberry (Symphoricarpos albus) distribution is limited to environments with less than 20% slope gradient, or that common snowberry distribution diminishes as slope gradient percentage increases. During my initial field observations, I started noticing that plant species occurred in one environmental gradient, but not in the other. My first observation was that the dominant tree species would differ between environmental gradients. For example, the riparian area was dominated by black cottonwood (Populus trichocarpa), whereas the upland area was dominated by ponderosa pine (Pinus ponderosa). When I started making observations about the shrub and herb layer I noticed similar patterns, where some species were present in one area, but not in the other.

I chose to focus on common snowberry distribution and started asking questions that may explain why common snowberry was present in the riparian area, but not in the upland area. I questioned slope gradient percentage as a potential indicator of water availability, slope aspect as an indicator of sun exposure, soil type, soil moisture and surrounding topography. When I relate this back to ecological processes, I want to focus my research project on abiotic factors and the physical environment including local topography, the hydrological cycle and the energy cycle. In summary, my research aims to explore that the physical environment (topography, slope, aspect etc.) is an indicator of species occurrence and ecological communities.

Three keys words I would associate with my research project include, ecosystem indicators, ecological communities and physical environment.

Blog Post 7: Theoretical Perspectives on Whispering Woods

My research project is concerned with both biotic and abiotic ecological factors that are indicators of aspen tree health. The rates of leaf colour change and leaf loss are important factors underpinning my research, as these rates are partly based on soil moisture and thus will serve as a proxy for tree health. Another point of knowledge important in my study is the pH requirements of a particular species of tree. Finally, the predictor variable in my research (location of the trees on a hill, thus an elevation gradient) is the primary abiotic factor my hypothesis is based on. I am choosing to focus on the ecological processes affecting soil moisture content along this environmental gradient.

Thus, my study utilizes theories on tree health as it relates to soil moisture content variability, pH, and elevation topography. Additionally, my research touches on the biotic processes of water uptake by tree roots, leaf colour change, and leaf loss.

Three key terms I would use to describe my research project are: soil moisture content, elevation gradient, and tree health.

Blog Post 7: Theoretical Perspectives

Blog Post 7: Theoretical Perspectives

 

September 30, 2019

 

The theoretical perspective for my field research project came from the positioning of the Hydrocotyle plant. When I was observing the lawn landscape, it seemed as though the Hydrocotyle was only found in the Southern area. The region of the landscape closer to the North side was higher in soil elevation. When I further examined the grassland on the far Southside, I noticed it had a dip in the soil, a region of lower elevation. I presumed more water would collect in this lower elevation area, and the region of higher elevation would receive more sunlight, helping to dry it out. After looking at research and botany articles, I had discovered that this genus is typically known to be aquatic. My assumption was that the soil moisture in the landscape must be over a gradient, which is why the plant would be found in this area of the lawn but not in the far Northside. I decided to test the hypothesis that there was a moisture gradient in the lawn, by purchasing a “Moisture meter” from the garden center. I used the mosituer meter to determine that the area on the Southside of the landscape did indeed have a higher mositure content. The moisture found in this area was drastically higher than on the North side. I checked the moisture levels on 3 different days. On average the South area ranged from ‘10’ (farthest Southside) to ‘4’ (on the Northern side). The moisture levels varied on the 3 days which I observed them, but all showed the South side having a high moisture level of ‘10’. I decided to test the theory that Hydrocotyle was limited by the moisture.

 

 

My research project touches on the ecological process of plant limitations on soils moisture levels. As I observed 6 different species in the lawn, the project also touches on diversity of plants in areas of high soils moisture levels vs. low moisture levels. I found more varieties of plants in the areas of high moisture level. The paper would also include the ecological process of reproduction and plant growth under soil moisture. Three key words I would use for the research paper are “soil moisture,” “grassland gradient,” and “Hydrocotyle limitations.”

 

 

BLOG POST 7

My main focus has been if there is a correlation between the number of pollinators and the weather. I have done this at a garden that has plant species that are to attract bees, therefore in theory there should be a fair number of bees in this general area. This can also tie in with the temperature of the day, the humidity, the wind, there are honestly all kinds of other factors that can affect the results. I am taking the temperature of the day and the type of weather into consideration when I am counting the number of pollinators in/ near the garden.

Three keywords for my research could be pollinators, botanical gardens, weather.

Post 7: Theoretical Perspectives

My study examines the effect of sunlight exposure on density of Canada goldenrod (Solidago canadensis). I hypothesized that higher levels of light exposure would be better growing conditions for the goldenrod, and therefore would result in increased plant density. As such, my research primarily relates to the goldenrod’s germination process and its preferential growing conditions. Additional factors that will be considered are the effects of soil moisture, elevation, and competition with other vegetation.

Three Keywords: Sunlight exposure, plant density, Solidago canadensis

Blog Post 7 – Theoretical Perspectives

My study investigates the abundance and distribution of Trifolium repens across a community park. I hypothesized that the less shaded the environment the better growing conditions would be for the clovers, and therefore would lead to a higher abundance. My study location is a community field so anthropogenic influences may affect the abundance of clovers, in particular in the “shaded” and “partial-shade” plots. Also because of the anthropogenic influences, in some plots competition has been introduced.

Keywords that I could use to describe my research project are; clover growth, abundance and anthropogenic influences.

Blogpost 7: Theoretical Perspectives

The major underpinnings of my project seem to fall on Spotted Knapweed’s (Centaurea maculosa) germination cycle and preferences. While plants produce thousands of seeds which can be relatively to disperse, frequency of plants seems to be correlated with environmental gradients. While my project is examining the potential connection between cover type (controlling amount of access to sunlight) many literature articles highlight Knapweed’s specific preferences for soil type, soil drainage, and ease of colonization (i.e. a recently disturbed area versus an undisturbed area). These potential confounding effects will be further discussed in depth in the final report. The distribution as examined by frequency of Spotted Knapweed is relevant to conservation of native species and invasive species control, especially with this aggressive competitor.

 

Three key words which could be descriptive of the project could be: sunlight access, Spotted Knapweed frequency, and/or invasive species distribution.

 

Blog post 7: Theoretical perspective

My study investigates on the abundance of flowering plants and its distribution pattern through the field. As my field is a part of an ecotone (the transition zone between the sea/sandy beach to the mainland), I hypothesized that a gradient in flower abundance will be surveyed. It is a recurring pattern in nature that a transitional zone between two ecosystems is characterized by a gradient that essentially fades both ecosystems into one another. In my specific case, the marine environment that is the ocean meets a drastic end at the shoreline. Therefore, the mainland ecosystem is the only one that will display this gradient (fading). The underlying processes that might come into play to create this (potential) gradient are of a wide range that includes soil moisture, soil composition, other vegetation and root systems, salt concentrations, etc.

 

The summarizing keywords for my study could be the following: Ecotone, transitional abundance gradient, flowering plants.

Post 7: Theoretical Perspectives

My research project focuses primarily on how soil properties affect Western redcedars distribution, but also touches on succession as Site 2 has been logged in the last 10 years. This relates to the evolutionary fitness (their adaptation/resilience to disturbances) of Western redcedars as well as competition/niche overlap between it and the other two most dominant species: Ponderosa Pine and Douglas Fir. My hypothesis focuses on how soil moisture content influences the spatial distribution of Western redcedars in the ICH-zone of British Columbia, but the specific research site I have chosen involves other variables such as aspect, elevation and anthropogenic influences. As I collected my data, I observed that while Western redcedar is completely absent from the site with the sandiest soil, it is distributed densely in the lowest elevation site with loamy soil and exists in moderate numbers in the silty site. This leads me to believe that competition for nutrients and sunlight are factors in determining the realized niche for the three most dominant tree species of the area.

The three keywords I would use to describe my research project are: soil moisture, realized niche, and inter-competition.