Esquimalt Lagoon -Terrestrial Ecology 2013
... that, “as a sensitive ecosystem, it is recommended that the whole of Coburg Peninsula be considered a conservation area and that the high-impacts of recreation, like parking infrastructure, benches, beach access points be directed to either end of the spit. This would allow the natural recovery of d ...
... that, “as a sensitive ecosystem, it is recommended that the whole of Coburg Peninsula be considered a conservation area and that the high-impacts of recreation, like parking infrastructure, benches, beach access points be directed to either end of the spit. This would allow the natural recovery of d ...
Alternative Dynamic Regimes and Trophic Control of Plant Succession
... largely view it as a process dominated by competitive replacement of colonizing plant species (Connell and Slatyer 1977; Bazzaz 1979; Peet and Christensen 1980; Pickett and others 1987; Tilman 1988). It is argued that fast-growing, short-lived species that best cope with high light and low nutrient ...
... largely view it as a process dominated by competitive replacement of colonizing plant species (Connell and Slatyer 1977; Bazzaz 1979; Peet and Christensen 1980; Pickett and others 1987; Tilman 1988). It is argued that fast-growing, short-lived species that best cope with high light and low nutrient ...
Across ecosystem comparisons of size structure: methods
... Dickie 2001, Brown et al. 2004). Body size is arguably the most fundamental trait of an organism, determining numerous life history and physiological characteristics (Peters 1983, Brown et al. 2004). Size can therefore greatly influence the occurrence and consequences of the ecological interactions a ...
... Dickie 2001, Brown et al. 2004). Body size is arguably the most fundamental trait of an organism, determining numerous life history and physiological characteristics (Peters 1983, Brown et al. 2004). Size can therefore greatly influence the occurrence and consequences of the ecological interactions a ...
Effects of elevated CO2 on keystone herbivores in modern Arctic
... (Bryant and Reichardt 1992). In general, the carbon:nitrogen ratio in plants increases with CO2 enrichment (Ayres 1993; Cotrufo et al. 1998; Korner 2000). The increased carbon availability is often used by plants to increase the amount of carbon-based secondary compounds such as tannins (especially ...
... (Bryant and Reichardt 1992). In general, the carbon:nitrogen ratio in plants increases with CO2 enrichment (Ayres 1993; Cotrufo et al. 1998; Korner 2000). The increased carbon availability is often used by plants to increase the amount of carbon-based secondary compounds such as tannins (especially ...
Soil, an Essential Natural Resource
... Soil is a mixture of rock particles, minerals, decayed organic material, water, and air. Humus—a dark-colored substance that forms as plant and animal remains decay. It has nutrients plants need, making the soil fertile. Fertility measures how well soil supports plant growth. ...
... Soil is a mixture of rock particles, minerals, decayed organic material, water, and air. Humus—a dark-colored substance that forms as plant and animal remains decay. It has nutrients plants need, making the soil fertile. Fertility measures how well soil supports plant growth. ...
UMWiki Retired June 30, 2016 | IT@UMN
... malthus.html) in the 18th century (i.e., war, famine, pestilence, and plague). Such regulatory mechanisms are not conducive to ...
... malthus.html) in the 18th century (i.e., war, famine, pestilence, and plague). Such regulatory mechanisms are not conducive to ...
Linking Scales in Stream Ecology
... systems such as streams, requires the explicit consideration of spatial scale in population-level research. There is a growing body of direct, empirical data on the dispersal patterns of stream organisms (Skalski and Gilliam 2000, Lowe 2003, Macneale et al. 2005), existing theory supports the demogr ...
... systems such as streams, requires the explicit consideration of spatial scale in population-level research. There is a growing body of direct, empirical data on the dispersal patterns of stream organisms (Skalski and Gilliam 2000, Lowe 2003, Macneale et al. 2005), existing theory supports the demogr ...
soil amending attributes of seaweed
... 3. Increased yield, protein and quality – The above-mentioned increases in plant growth would be expected to increase forage yield but it has also been shown to increase grain yields. Numerous trials in England have reported from 14% to 40% increases in cereal grain yields. Forage tests have also s ...
... 3. Increased yield, protein and quality – The above-mentioned increases in plant growth would be expected to increase forage yield but it has also been shown to increase grain yields. Numerous trials in England have reported from 14% to 40% increases in cereal grain yields. Forage tests have also s ...
I
... of apex predators might be expected to have the opposite effect if the consequence were the reduction in their herbivorous prey (e.g., [18]). However, this prediction is qualified by such factors as the relationship between herbivore size and grazing impacts, the spatial and temporal scale over whic ...
... of apex predators might be expected to have the opposite effect if the consequence were the reduction in their herbivorous prey (e.g., [18]). However, this prediction is qualified by such factors as the relationship between herbivore size and grazing impacts, the spatial and temporal scale over whic ...
Biodiversity Research
... functions within the system and mutually replace each other? Or does each species play a unique role, making it irreplaceable within the system? Are species-rich communities more productive? Do they fix carbon more effectively and thus slow down climate change? Or are modern high-yield varieties sup ...
... functions within the system and mutually replace each other? Or does each species play a unique role, making it irreplaceable within the system? Are species-rich communities more productive? Do they fix carbon more effectively and thus slow down climate change? Or are modern high-yield varieties sup ...
Landscapes
... Webster explored how lake position in a landscape affected chemical responses to drought. Lake position in landscape determined portion of water received as groundwater. Upper lakes dropped more than lower lakes. Concentration of dissolved ions increased most at upper and lower ends. ...
... Webster explored how lake position in a landscape affected chemical responses to drought. Lake position in landscape determined portion of water received as groundwater. Upper lakes dropped more than lower lakes. Concentration of dissolved ions increased most at upper and lower ends. ...
Ecology in Global Scenarios - Millennium Ecosystem Assessment
... different types of ecosystem service. For example, Fearnside (2000) describes how climate regulation (carbon storage, evapotranspiration) may conflict with food production (such as clearing of woodlands to create pastures); similarly, the use of river systems as conduits for the removal of wastes ca ...
... different types of ecosystem service. For example, Fearnside (2000) describes how climate regulation (carbon storage, evapotranspiration) may conflict with food production (such as clearing of woodlands to create pastures); similarly, the use of river systems as conduits for the removal of wastes ca ...
changes in the content of organic carbon and available forms of
... any significant effect on the content of magnesium but raised the content of phosphorus in soil contaminated with diesel oil. KWIATKOWSKA and MACIEJEWSKA (2008) also demonstrated that enrichment of soil with organic substance caused an increase in the content of macronutrients in soil, and lignite w ...
... any significant effect on the content of magnesium but raised the content of phosphorus in soil contaminated with diesel oil. KWIATKOWSKA and MACIEJEWSKA (2008) also demonstrated that enrichment of soil with organic substance caused an increase in the content of macronutrients in soil, and lignite w ...
changes in the content of organic carbon and available forms of
... any significant effect on the content of magnesium but raised the content of phosphorus in soil contaminated with diesel oil. KWIATKOWSKA and MACIEJEWSKA (2008) also demonstrated that enrichment of soil with organic substance caused an increase in the content of macronutrients in soil, and lignite w ...
... any significant effect on the content of magnesium but raised the content of phosphorus in soil contaminated with diesel oil. KWIATKOWSKA and MACIEJEWSKA (2008) also demonstrated that enrichment of soil with organic substance caused an increase in the content of macronutrients in soil, and lignite w ...
Arctic Frontiers 2017 Call for Papers
... time when most of the Arctic ecosystem is dormant, but how newly discovered processes affect ecosystem functioning is largely still unknown. Investigated poorly known locations in the Arctic. The under-ice community of the central Arctic can be far more productive than previously thought. Blooms w ...
... time when most of the Arctic ecosystem is dormant, but how newly discovered processes affect ecosystem functioning is largely still unknown. Investigated poorly known locations in the Arctic. The under-ice community of the central Arctic can be far more productive than previously thought. Blooms w ...
ACCUMULATION OF METALS, COBALT (CO), MOLYBDENUM (MO
... area. There was some evidence that U concentrations in invertebrates were higher than in plants, and there was potential transfer of U from soil to animals. In this study element concentrations in earthworms and carabid beetles were analysed using the inductively coupled plasma-mass spectroscopy (IC ...
... area. There was some evidence that U concentrations in invertebrates were higher than in plants, and there was potential transfer of U from soil to animals. In this study element concentrations in earthworms and carabid beetles were analysed using the inductively coupled plasma-mass spectroscopy (IC ...
Downloaded - University of Kentucky College of Arts and Sciences
... 2.2. Ecosystem Engineers, Niche Construction, and Geomorphic Engineers Similarly to the development of biogeomorphology, the concept of ecosystem engineers also has roots back to Darwin’s earthworm work and links to other fundamental ecological concepts such as plant succession (Buchman et al. 2007, ...
... 2.2. Ecosystem Engineers, Niche Construction, and Geomorphic Engineers Similarly to the development of biogeomorphology, the concept of ecosystem engineers also has roots back to Darwin’s earthworm work and links to other fundamental ecological concepts such as plant succession (Buchman et al. 2007, ...
Understanding Soil Texture and Structure
... Objective 3: Describe soil structure, its formation, and importance. • A. Soil structure is the arrangement of the soil particles into clusters or aggregates of various sizes and shapes. Aggregates that occur naturally in the soil are referred to as peds, while clumps of soil caused by tillage are ...
... Objective 3: Describe soil structure, its formation, and importance. • A. Soil structure is the arrangement of the soil particles into clusters or aggregates of various sizes and shapes. Aggregates that occur naturally in the soil are referred to as peds, while clumps of soil caused by tillage are ...
Keeping the soil healthy
... organisms. These organisms loosen the topsoil better than a hoe or a plough. They break up dead leaves and stalks, carry it down into the soil, and mix it in. They speed up the decomposition of organic matter and release of plant nutrients. They compete with harmful organisms that may cause crop dis ...
... organisms. These organisms loosen the topsoil better than a hoe or a plough. They break up dead leaves and stalks, carry it down into the soil, and mix it in. They speed up the decomposition of organic matter and release of plant nutrients. They compete with harmful organisms that may cause crop dis ...
Journal of Experimental Marine Biology and Ecology
... understanding of the impacts of marine invasions. Wallentinus and Nyberg (2007) and Crooks (2009) reviewed ‘positive’ interactions associated with habitat-provision and engineering effects, whereas Byers (2009), Rilov (2009) and Grosholz and Ruiz (2009) reviewed negative species interactions (i.e. c ...
... understanding of the impacts of marine invasions. Wallentinus and Nyberg (2007) and Crooks (2009) reviewed ‘positive’ interactions associated with habitat-provision and engineering effects, whereas Byers (2009), Rilov (2009) and Grosholz and Ruiz (2009) reviewed negative species interactions (i.e. c ...
NUTRIpak POTASSIUM (K)
... development, resulting in small immature bolls, many of which fail to open. The symptoms of severe deficiencies are only likely to occur in highly weathered coarse-textured soils, in wetter environments. These soils normally have low K reserves, a low cation exchange capacity and available K is read ...
... development, resulting in small immature bolls, many of which fail to open. The symptoms of severe deficiencies are only likely to occur in highly weathered coarse-textured soils, in wetter environments. These soils normally have low K reserves, a low cation exchange capacity and available K is read ...
DEFINITION: THE STUDY OF THE INTERACTION BETWEEN
... ENERGY FLOW CONSUMERS-ALL ELSE (HETEROTROPH) ...
... ENERGY FLOW CONSUMERS-ALL ELSE (HETEROTROPH) ...
Urban Systems - Stockholm Resilience Centre
... in predation rates have been suggested to be among the most important. Predation on artificial nests has often been found to be higher in urban parks than in neighboring woodlands and the abundance of predators such as corvids, rats, and house mice are often more in urban parks compared to the rural ...
... in predation rates have been suggested to be among the most important. Predation on artificial nests has often been found to be higher in urban parks than in neighboring woodlands and the abundance of predators such as corvids, rats, and house mice are often more in urban parks compared to the rural ...
`wasp-waist` food webs
... dynamics and fisheries-relevant issues as well as the food web [11,12], whereas krill research tends to be more foodweb based [6,13]. Despite these differences, the species all achieve enormously high biomass densities at mid-trophic levels, with unusually large variability in population size on tim ...
... dynamics and fisheries-relevant issues as well as the food web [11,12], whereas krill research tends to be more foodweb based [6,13]. Despite these differences, the species all achieve enormously high biomass densities at mid-trophic levels, with unusually large variability in population size on tim ...
Human impact on the nitrogen cycle
Human impact on the nitrogen cycle is diverse. Agricultural and industrial nitrogen (N) inputs to the environment currently exceed inputs from natural N fixation. As a consequence of anthropogenic inputs, the global nitrogen cycle (Fig. 1) has been significantly altered over the past century. Global atmospheric nitrous oxide (N2O) mole fractions have increased from a pre-industrial value of ~270 nmol/mol to ~319 nmol/mol in 2005. Human activities account for over one-third of N2O emissions, most of which are due to the agricultural sector. This article is intended to give a brief review of the history of anthropogenic N inputs, and reported impacts of nitrogen inputs on selected terrestrial and aquatic ecosystems.