![Grazing of protozoa and its effect on populations of aquatic bacteria](http://s1.studyres.com/store/data/014321836_1-8d79382446769169a095da4ea9226499-300x300.png)
Grazing of protozoa and its effect on populations of aquatic bacteria
... bacterial morphotypes of various morphology and taxonomy. The term has been used for linear and curved threadlike bacteria (no visible septae), as well as for chain-forming bacteria (for photos see [18,19,23,25]). It has been demonstrated that ¢lamentous bacteria can belong to the phylogenetic group ...
... bacterial morphotypes of various morphology and taxonomy. The term has been used for linear and curved threadlike bacteria (no visible septae), as well as for chain-forming bacteria (for photos see [18,19,23,25]). It has been demonstrated that ¢lamentous bacteria can belong to the phylogenetic group ...
Illinois Biodiversity Basics
... habitats that house all life forms and the interconnections that tie living things together. Ecosystem diversity includes the prairies, marshes, swamps, deciduous forests and all other environments where species live. Ecosystems not only provide habitat for species but also perform functions such as ...
... habitats that house all life forms and the interconnections that tie living things together. Ecosystem diversity includes the prairies, marshes, swamps, deciduous forests and all other environments where species live. Ecosystems not only provide habitat for species but also perform functions such as ...
Exploring the causes of and mitigation options for human
... ii) this thesis is my own unaided work, both in concept and execution, and that apart from the normal guidance from my supervisor; I have received no assistance except as stated below: Cheetah Conservation Botswana (CCB) is responsible for the conception of the predator densities (Chapter 5), prey a ...
... ii) this thesis is my own unaided work, both in concept and execution, and that apart from the normal guidance from my supervisor; I have received no assistance except as stated below: Cheetah Conservation Botswana (CCB) is responsible for the conception of the predator densities (Chapter 5), prey a ...
Does the Janzen-Connell model for species diversity apply in a sub
... are more likey to survive and reach maturity the further they are away from parents / conspecific adults. Theoretically this should lead to a random distribution of each species in the forest, which in turn will lead to high species diversity. Here I test the Janzen-Connell hypothesis for the first ...
... are more likey to survive and reach maturity the further they are away from parents / conspecific adults. Theoretically this should lead to a random distribution of each species in the forest, which in turn will lead to high species diversity. Here I test the Janzen-Connell hypothesis for the first ...
table of contents - North American Prairie Conference 2016
... In the USA upper Midwest (Illinois, Indiana, Iowa, Minnesota, Missouri, and Wisconsin), of 86,898,620 acres of historic prairie that occurred in this area, only 176,580 acres (0.2%) of high quality remnant prairie remains. Due to agriculture, urbanization and invasion by woody species following fire ...
... In the USA upper Midwest (Illinois, Indiana, Iowa, Minnesota, Missouri, and Wisconsin), of 86,898,620 acres of historic prairie that occurred in this area, only 176,580 acres (0.2%) of high quality remnant prairie remains. Due to agriculture, urbanization and invasion by woody species following fire ...
Cost of autotomy drives ontogenetic switching of anti
... S. c. caliginosa is probably a product of adaptive evolution against snake predation. Foot autotomy in gastropods has been considered to evolve in parallel with the gradual loss of the protective shell, because the capability of foot autotomy is generally limited in species that cannot withdraw comp ...
... S. c. caliginosa is probably a product of adaptive evolution against snake predation. Foot autotomy in gastropods has been considered to evolve in parallel with the gradual loss of the protective shell, because the capability of foot autotomy is generally limited in species that cannot withdraw comp ...
wildlife management practices
... Tejon Ranch was created from four Mexican land grants purchased by General Edward Fitzgerald Beale in the 1860s, and before 1950 hunting on the Ranch was a privately controlled, unstructured activity. The commercial hunting operation on Tejon Ranch was first developed in the 1950s. The Tejon Ranch C ...
... Tejon Ranch was created from four Mexican land grants purchased by General Edward Fitzgerald Beale in the 1860s, and before 1950 hunting on the Ranch was a privately controlled, unstructured activity. The commercial hunting operation on Tejon Ranch was first developed in the 1950s. The Tejon Ranch C ...
Demography and feeding behavior of the kelp crab Taliepus
... In many habitats, crab consumers have special feeding rhythms to avoid interspecific competition for food and predation risk (Jesse 2001; KronfeldSchor & Dayan 2003). For example, members of many brachyuran species feed mainly during the night, with no or low foraging activity during the day (Aris e ...
... In many habitats, crab consumers have special feeding rhythms to avoid interspecific competition for food and predation risk (Jesse 2001; KronfeldSchor & Dayan 2003). For example, members of many brachyuran species feed mainly during the night, with no or low foraging activity during the day (Aris e ...
Ecological Functions of Nearshore Hardbottom Habitats in East
... coast occur in hardbottom areas with higher abundances of sessile invertebrate species (some may be considered foundational or keystone contributors to the community) that enhance local shelter. Along the Florida coast, important shelter-enhancing taxonomic groups are hard and soft corals, sponges, ...
... coast occur in hardbottom areas with higher abundances of sessile invertebrate species (some may be considered foundational or keystone contributors to the community) that enhance local shelter. Along the Florida coast, important shelter-enhancing taxonomic groups are hard and soft corals, sponges, ...
TEMG_plan_draft_semifinal_2013_02_15
... NOTE FOR REVIEWERS: The TEMG Team wishes to thank you for your time and contributions to improve the working draft of the Terrestrial Plan. We would be pleased to acknowledge your contributions. Please write your NAME here if you wish to be named; otherwise we will only thank you as ‘Anonymous Revie ...
... NOTE FOR REVIEWERS: The TEMG Team wishes to thank you for your time and contributions to improve the working draft of the Terrestrial Plan. We would be pleased to acknowledge your contributions. Please write your NAME here if you wish to be named; otherwise we will only thank you as ‘Anonymous Revie ...
A Summary of Predation by Corvids on
... Table 1. Population trends (%/yr) of Common Raven (Corvus corax), American Crow (Corvus brachyrynchus), and Steller’s Jay (Cyanocitta stelleri) in California between 1959 and 1988 from Christmas Bird Counts (Sauer et al. 1996). Lower and upper 95% confidence intervals (95% CI LB, 95% CI UB, respecti ...
... Table 1. Population trends (%/yr) of Common Raven (Corvus corax), American Crow (Corvus brachyrynchus), and Steller’s Jay (Cyanocitta stelleri) in California between 1959 and 1988 from Christmas Bird Counts (Sauer et al. 1996). Lower and upper 95% confidence intervals (95% CI LB, 95% CI UB, respecti ...
Predator-Prey Relationships and Spatial Ecology of Jaguars in the
... USU. Mari not only accepted the task of supervising the project, but even “donated temporarily” her own vehicle to help with project activities. Thank you Mari. She later came back to work with camera traps at our study site, a work that culminated in her master’s thesis at the University of Cambrid ...
... USU. Mari not only accepted the task of supervising the project, but even “donated temporarily” her own vehicle to help with project activities. Thank you Mari. She later came back to work with camera traps at our study site, a work that culminated in her master’s thesis at the University of Cambrid ...
The interaction between cyanobacteria and zooplankton in a more
... elusive. Historically, the focus has been on studying the grazing defenses of cyanobacteria and their effects of zooplankton. Several cyanobacterial secondary metabolites, such as microcystins (MCs), were shown to have negative physiological effects on zooplankton (Rohrlack et al., 1999; Lürling an ...
... elusive. Historically, the focus has been on studying the grazing defenses of cyanobacteria and their effects of zooplankton. Several cyanobacterial secondary metabolites, such as microcystins (MCs), were shown to have negative physiological effects on zooplankton (Rohrlack et al., 1999; Lürling an ...
Volume 2, Chapter 7-2: Arthropods: Arachinda
... arthropods that are active above the surface during some part of the 24-hour cycle (Curtis 1980). But if arthropods spend most of their time within the bryophyte mat rather than on the surface, they are not likely to fall into such traps. Curtis found that responses of spider species to four pitfall ...
... arthropods that are active above the surface during some part of the 24-hour cycle (Curtis 1980). But if arthropods spend most of their time within the bryophyte mat rather than on the surface, they are not likely to fall into such traps. Curtis found that responses of spider species to four pitfall ...
1 - The Many Roads to Parasitism: A Tale of Convergence
... certain circumstances, breaks down in many cases, such as ‘mesoparasitic’ copepods that are partially embedded in host tissues but still exposed to the external aquatic habitat (Boxshall and Halsey, 2004). Parasites are also sometimes classified based on their life cycle patterns, for example, paras ...
... certain circumstances, breaks down in many cases, such as ‘mesoparasitic’ copepods that are partially embedded in host tissues but still exposed to the external aquatic habitat (Boxshall and Halsey, 2004). Parasites are also sometimes classified based on their life cycle patterns, for example, paras ...
Armstrong–McGehee mechanism revisited_ Competitive exclusion
... provide periodically recurring conditions that lead to alternating competitive superiority of one of the two competitors and thereby facilitate coexistence. This mechanism has been shown, in principle, to allow two consumers to coexist on a single resource, both for exogenously forced and endogenous ...
... provide periodically recurring conditions that lead to alternating competitive superiority of one of the two competitors and thereby facilitate coexistence. This mechanism has been shown, in principle, to allow two consumers to coexist on a single resource, both for exogenously forced and endogenous ...
endophytic fungi are not welcome in leaf
... address this question, we provided 16 naive colonies with a single Ehigh leaf and waited until we observed ants planting leaf pieces in the garden. Using sterile forceps, we removed leaf pieces from the garden and plated 20 antprepared leaf pieces per colony on a single 2 per cent malt extract agar ...
... address this question, we provided 16 naive colonies with a single Ehigh leaf and waited until we observed ants planting leaf pieces in the garden. Using sterile forceps, we removed leaf pieces from the garden and plated 20 antprepared leaf pieces per colony on a single 2 per cent malt extract agar ...
Chapter 14: Terrapin Conservation: Mitigating Habitat Loss, Road
... aquatic habitats. Terrestrial movements of juvenile and adult male terrapins are believed to be rare, but ...
... aquatic habitats. Terrestrial movements of juvenile and adult male terrapins are believed to be rare, but ...
HEMIMYSIS ANOMALA NEARSHORE FISH COMMUNITY OF LAKE ONTARIO
... consumption on the growth of yellow perch (Perca flavescens) were quantified using bioenergetics modeling and four predictive feeding scenarios simulating Hemimysis incorporation into yellow perch diets. My results suggest Hemimysis are being incorporated into diets of round gobies, alewife and smal ...
... consumption on the growth of yellow perch (Perca flavescens) were quantified using bioenergetics modeling and four predictive feeding scenarios simulating Hemimysis incorporation into yellow perch diets. My results suggest Hemimysis are being incorporated into diets of round gobies, alewife and smal ...
Feeding Spectrum and Trophic Relationships of Short
... but identification to the family level was achieved only for amphipods, copepods, decapods (shrimps) and euphausiids. Amphipoda. This order was represented by two families, Gammaridae and Phronimidae (Table 1), the latter belonging to the suborder Hyperiidea. Among the amphipods that were identified ...
... but identification to the family level was achieved only for amphipods, copepods, decapods (shrimps) and euphausiids. Amphipoda. This order was represented by two families, Gammaridae and Phronimidae (Table 1), the latter belonging to the suborder Hyperiidea. Among the amphipods that were identified ...
Sensitive Ecosystems Inventory: East Vancouver Island and Gulf
... limited audience or is too extensive to be accommodated in scientific journals or in existing CWS series. Demand for these Technical Reports is usually confined to specialists in the fields concerned. Consequently, they are produced regionally and in small quantities; they can be obtained only from ...
... limited audience or is too extensive to be accommodated in scientific journals or in existing CWS series. Demand for these Technical Reports is usually confined to specialists in the fields concerned. Consequently, they are produced regionally and in small quantities; they can be obtained only from ...
Theoretical ecology
![](https://en.wikipedia.org/wiki/Special:FilePath/FoodWeb.jpg?width=300)
Theoretical ecology is the scientific discipline devoted to the study of ecological systems using theoretical methods such as simple conceptual models, mathematical models, computational simulations, and advanced data analysis. Effective models improve understanding of the natural world by revealing how the dynamics of species populations are often based on fundamental biological conditions and processes. Further, the field aims to unify a diverse range of empirical observations by assuming that common, mechanistic processes generate observable phenomena across species and ecological environments. Based on biologically realistic assumptions, theoretical ecologists are able to uncover novel, non-intuitive insights about natural processes. Theoretical results are often verified by empirical and observational studies, revealing the power of theoretical methods in both predicting and understanding the noisy, diverse biological world.The field is broad and includes foundations in applied mathematics, computer science, biology, statistical physics, genetics, chemistry, evolution, and conservation biology. Theoretical ecology aims to explain a diverse range of phenomena in the life sciences, such as population growth and dynamics, fisheries, competition, evolutionary theory, epidemiology, animal behavior and group dynamics, food webs, ecosystems, spatial ecology, and the effects of climate change.Theoretical ecology has further benefited from the advent of fast computing power, allowing the analysis and visualization of large-scale computational simulations of ecological phenomena. Importantly, these modern tools provide quantitative predictions about the effects of human induced environmental change on a diverse variety of ecological phenomena, such as: species invasions, climate change, the effect of fishing and hunting on food network stability, and the global carbon cycle.