Ecology
... OMNIVORES feed on plants and animals yy PREDATOR-PREY RELATIONSHIPS yy HOST-PARASITE RELATIONSHIPS—parasites are predators intimately associated with their prey; feed on prey for an extended period of time; animal fed upon is called the host iii. Detritus Feeders and Decomposers Detritus (di TRI tu ...
... OMNIVORES feed on plants and animals yy PREDATOR-PREY RELATIONSHIPS yy HOST-PARASITE RELATIONSHIPS—parasites are predators intimately associated with their prey; feed on prey for an extended period of time; animal fed upon is called the host iii. Detritus Feeders and Decomposers Detritus (di TRI tu ...
1. Fear Itself Affects Food Webs Justin P. Suraci1,2,3
... to dramatically increase their impacts on intertidal prey • Using month-long playbacks of an extant large carnivore predator (domestic dogs) and non-predator control (seals), we tested whether the fear of large carnivores could itself reverse mesocarnivore impacts on the intertidal community. ...
... to dramatically increase their impacts on intertidal prey • Using month-long playbacks of an extant large carnivore predator (domestic dogs) and non-predator control (seals), we tested whether the fear of large carnivores could itself reverse mesocarnivore impacts on the intertidal community. ...
Wildlife Management
... • r-selection occurs when a species has little competition in its niche. ...
... • r-selection occurs when a species has little competition in its niche. ...
EHS-I-unit-v
... All of these vary over space/time By and large, this set of environmental factors is important almost everywhere, in all ecosystems. Functional group A functional group is a biological category composed of organisms that perform mostly the same kind of function in the system; for example, all the ph ...
... All of these vary over space/time By and large, this set of environmental factors is important almost everywhere, in all ecosystems. Functional group A functional group is a biological category composed of organisms that perform mostly the same kind of function in the system; for example, all the ph ...
Mr. Babak - Marion County Public Schools
... ** The climax community of a region is always its dominant plant species. ** - Altered ecosystems may reach a point of stability that can last for hundreds or thousands of years. A climax community persists until a catastrophic change of a major biotic or abiotic nature alters or destroys it. (Ex. f ...
... ** The climax community of a region is always its dominant plant species. ** - Altered ecosystems may reach a point of stability that can last for hundreds or thousands of years. A climax community persists until a catastrophic change of a major biotic or abiotic nature alters or destroys it. (Ex. f ...
Interspecific Competition and Species` Distributions
... Lack's first great contributions on this topic are his 1944 paper "Ecological aspects of species formation in passerine birds" and its subsequent expanded version, his 1947 book Darwin's finches. In these works Lack focused on the role of competition in shaping distributions of closely related bird ...
... Lack's first great contributions on this topic are his 1944 paper "Ecological aspects of species formation in passerine birds" and its subsequent expanded version, his 1947 book Darwin's finches. In these works Lack focused on the role of competition in shaping distributions of closely related bird ...
Competition, predation and species responses to environmental
... Increasing temperature significantly increased Paramecium growth rate (one-way ANOVA, temperature: F2,6 /6.29, P /0.0336; Fig. 1). In monocultures, Paramecium maintained a relatively steady density after initial rapid population growth (Fig. 5, left panels). Temperature change did not affect Parame ...
... Increasing temperature significantly increased Paramecium growth rate (one-way ANOVA, temperature: F2,6 /6.29, P /0.0336; Fig. 1). In monocultures, Paramecium maintained a relatively steady density after initial rapid population growth (Fig. 5, left panels). Temperature change did not affect Parame ...
Apr 10 - University of San Diego
... “The implications of [Leopold’s] view include the clear prospect that the individual may be sacrificed for the greater biotic good, in the name of ‘the integrity, stability, and beauty of the biotic community.’ It is difficult to see how the notion of the rights of the individual could find a home w ...
... “The implications of [Leopold’s] view include the clear prospect that the individual may be sacrificed for the greater biotic good, in the name of ‘the integrity, stability, and beauty of the biotic community.’ It is difficult to see how the notion of the rights of the individual could find a home w ...
Week 09 Lecture Notes
... growth curve was geometric, while the human food production growth curve was only arithmetic ...
... growth curve was geometric, while the human food production growth curve was only arithmetic ...
Name_____________________________________________
... Instinctive Behavior: Refers to behaviors that are not learned. It is an inherited behavior. A. Fixed-Action Pattern: an instinctive behavior that occurs as an unchangeable sequence of actions. A FAP is usually triggered by a specific stimulus. An animal can only perform a FAP as a whole “script”, f ...
... Instinctive Behavior: Refers to behaviors that are not learned. It is an inherited behavior. A. Fixed-Action Pattern: an instinctive behavior that occurs as an unchangeable sequence of actions. A FAP is usually triggered by a specific stimulus. An animal can only perform a FAP as a whole “script”, f ...
Pleistocene Megafauna Extinction
... responsible for the death of millions of megafauna across northern latitudes. The climate change hypothesis points to the disruptive and potentially lethal aspects of the postglacier climate. Both of these hypotheses fail to explain all of the phenomena observed during the late Pleistocene period. H ...
... responsible for the death of millions of megafauna across northern latitudes. The climate change hypothesis points to the disruptive and potentially lethal aspects of the postglacier climate. Both of these hypotheses fail to explain all of the phenomena observed during the late Pleistocene period. H ...
Expert Panel Assessment 2007 [PDF-698 KB
... The BNTS site, while consisting mostly of open grassland, also contains a number of other habitats. These include native eucalypt woodland, unoccupied residences and other buildings (some with gardens and ancillary areas planted with numerous exotic trees and shrubs), stony outcrops and small areas ...
... The BNTS site, while consisting mostly of open grassland, also contains a number of other habitats. These include native eucalypt woodland, unoccupied residences and other buildings (some with gardens and ancillary areas planted with numerous exotic trees and shrubs), stony outcrops and small areas ...
Last lecture! Ch 23 cont. Biodiversity
... • Rapid dispersal within continental areas prevents local extinction within small areas ...
... • Rapid dispersal within continental areas prevents local extinction within small areas ...
Available
... is composed of species best adapted to average conditions in that area. The term is sometimes also applied in soil development. It, nevertheless, has been found that steady state is more apparent than real, particularly if long enough periods of time are taken into consideration. Not with standing t ...
... is composed of species best adapted to average conditions in that area. The term is sometimes also applied in soil development. It, nevertheless, has been found that steady state is more apparent than real, particularly if long enough periods of time are taken into consideration. Not with standing t ...
Blue SDU - Department of Biology
... Blue interests: Global carbon cycle/budget, arctic biological carbon pump, carbon sequestration by seagrasses, Invasive species Research area: metabolomics, linking molecular approaches to ecosystems level marine eco-systems biology, assessment of marine plants to sequestrate carbon, effect of globa ...
... Blue interests: Global carbon cycle/budget, arctic biological carbon pump, carbon sequestration by seagrasses, Invasive species Research area: metabolomics, linking molecular approaches to ecosystems level marine eco-systems biology, assessment of marine plants to sequestrate carbon, effect of globa ...
Role of biological disturbance in maintaining diversity in the deep sea
... similar findings. Hessler (in preparation) finds a typical high diversity of deposit feeders in one oligotrophic area of the North Pacific. This suggests that even if suspension feeders are important in such areas, deposit feeders are at least as diverse as elsewhere in the deep sea. There is no dis ...
... similar findings. Hessler (in preparation) finds a typical high diversity of deposit feeders in one oligotrophic area of the North Pacific. This suggests that even if suspension feeders are important in such areas, deposit feeders are at least as diverse as elsewhere in the deep sea. There is no dis ...
Ecological principles Study Module 2
... ecosystems, and how to depict the transfer of that energy through an ecosystem. To do this, we have assumed that there were organisms (which, dead or alive are called biotic factors) and their physical environments (abiotic factors) for the energy to flow through. We will now focus on the matter fou ...
... ecosystems, and how to depict the transfer of that energy through an ecosystem. To do this, we have assumed that there were organisms (which, dead or alive are called biotic factors) and their physical environments (abiotic factors) for the energy to flow through. We will now focus on the matter fou ...
Niche Evolution, Trophic Structure, and Species Turnover in Model
... Like previous evolutionary assembly models, our model requires predator interference to sustain food webs of more than a few species (e.g., Drossel et al. 2004; Loeuille and Loreau 2005; Guill and Drossel 2008). Interference competition promotes diversity in this model by intensifying interactions w ...
... Like previous evolutionary assembly models, our model requires predator interference to sustain food webs of more than a few species (e.g., Drossel et al. 2004; Loeuille and Loreau 2005; Guill and Drossel 2008). Interference competition promotes diversity in this model by intensifying interactions w ...
Reprint
... gene substitutions, the stuff of population genetics, can bring the system to the fixed point in the first place. With these two approaches in mind, evolution has been likened to the motion of a streetcar, with many stops and starts as one gene is substituted for another, before eventually reaching the ...
... gene substitutions, the stuff of population genetics, can bring the system to the fixed point in the first place. With these two approaches in mind, evolution has been likened to the motion of a streetcar, with many stops and starts as one gene is substituted for another, before eventually reaching the ...
Stream Biotic and Abiotic
... order) and continue on. Two streams of the same order must come together for a stream to move up in order. The size or order of the stream relates directly on the organisms that are in the ecosystem. 1st order streams are home to large insect populations, few if any fish. Plants and game fish ...
... order) and continue on. Two streams of the same order must come together for a stream to move up in order. The size or order of the stream relates directly on the organisms that are in the ecosystem. 1st order streams are home to large insect populations, few if any fish. Plants and game fish ...
Unit 3
... 29. Explain how the population size of predators and prey are interconnected, and how significant changes in the size of either group’s population would influence the population size of the other group. (DOK 3) 30. Which of the following is common to the carbon cycle, the nitrogen cycle, and the wa ...
... 29. Explain how the population size of predators and prey are interconnected, and how significant changes in the size of either group’s population would influence the population size of the other group. (DOK 3) 30. Which of the following is common to the carbon cycle, the nitrogen cycle, and the wa ...
The consequences of consumer diversity loss
... control of an early successional invertebrate community. We used a strict combination additive–replacement design, rather than similar designs that also seek to assess the role of density and diversity (O’Connor and Crowe 2005, Benedetti-Cecchi 2006), both for ease of interpretation and the ability ...
... control of an early successional invertebrate community. We used a strict combination additive–replacement design, rather than similar designs that also seek to assess the role of density and diversity (O’Connor and Crowe 2005, Benedetti-Cecchi 2006), both for ease of interpretation and the ability ...
The relationship between forest biodiversity, ecosystem
... Resilience is an emergent ecosystem property • Resilience of a forest is a function of biodiversity at all scales: genes, species, landscapes, and regional diversity among ecosystems • Most primary forest ecosystems are resilient to natural disturbances; many are also resistant • Loss of biodive ...
... Resilience is an emergent ecosystem property • Resilience of a forest is a function of biodiversity at all scales: genes, species, landscapes, and regional diversity among ecosystems • Most primary forest ecosystems are resilient to natural disturbances; many are also resistant • Loss of biodive ...
Theoretical ecology
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.