Does an evolutionary change in the water sowbug Asellus aquaticus
... (Eroukhmanoff et al. 2009). These different phenotypes resulted from evolutionary responses to local differences in natural selection. Hargeby et al. 2004 showed that this phenotypic difference has a genetic basis where diet and chromatophore adjustment to background color play a minor role. Moreove ...
... (Eroukhmanoff et al. 2009). These different phenotypes resulted from evolutionary responses to local differences in natural selection. Hargeby et al. 2004 showed that this phenotypic difference has a genetic basis where diet and chromatophore adjustment to background color play a minor role. Moreove ...
Common Ancestry Is a Poor Predictor of Competitive Traits in
... phylogenetic signal, patterns of common ancestry can be used as reasonable proxies for species' trait variability. The expectation that closely related species should be more phenotypically similar than distantly related species is intuitive, and it is also a pattern that is predicted by certain nul ...
... phylogenetic signal, patterns of common ancestry can be used as reasonable proxies for species' trait variability. The expectation that closely related species should be more phenotypically similar than distantly related species is intuitive, and it is also a pattern that is predicted by certain nul ...
Effects of interspecific competition, predation, and their interaction
... each time step to the next. However, we were interested in determining the number of individuals that transitioned among stages and the approximate time they spent in each stage. To do this, we counted the number of individuals in each stage each day and calculated back to estimate the fate of indiv ...
... each time step to the next. However, we were interested in determining the number of individuals that transitioned among stages and the approximate time they spent in each stage. To do this, we counted the number of individuals in each stage each day and calculated back to estimate the fate of indiv ...
Defining drivers of the trophic niche width in reef fish communities
... Part 2 : Effect of inherent characteristics on the isotopic niche width ........................ ^B! (1) The influence of biological and behavioral traits .............................................. ^B! (2) The influence of the Geographical Range and Functional Distinctiveness ....... ^B! (3) The ...
... Part 2 : Effect of inherent characteristics on the isotopic niche width ........................ ^B! (1) The influence of biological and behavioral traits .............................................. ^B! (2) The influence of the Geographical Range and Functional Distinctiveness ....... ^B! (3) The ...
chapter 52 population ecology
... Organisms that survive a long time but do not reproduce are not at all "fit" in the Darwinian sense. In every species, there are trade-offs between survival and traits such as frequency of reproduction, investment in parental care, and the number of offspring produced (seed crops for seed plants and ...
... Organisms that survive a long time but do not reproduce are not at all "fit" in the Darwinian sense. In every species, there are trade-offs between survival and traits such as frequency of reproduction, investment in parental care, and the number of offspring produced (seed crops for seed plants and ...
Unit 1 - OpenWetWare
... Biogeographic Factors Affecting the Biodiversity of Communities 26. Describe and distinguish between species richness and relative abundance. 27. Describe the data necessary to measure biodiversity. 28. Describe and explain how species richness varies along the equatorial-polar gradient. 29. Define ...
... Biogeographic Factors Affecting the Biodiversity of Communities 26. Describe and distinguish between species richness and relative abundance. 27. Describe the data necessary to measure biodiversity. 28. Describe and explain how species richness varies along the equatorial-polar gradient. 29. Define ...
Linking nutrient loading, local abiotic variables, richness and
... the production of benthic and/or pelagic microalgae (Granéli and Sundbäck 1985; Howarth, 1988) and, hence, increase the amount of available food for benthic grazers, suspension feeders, and deposit feeders and ultimately for carnivores. As a consequence, abundance and growth responses of invertebrat ...
... the production of benthic and/or pelagic microalgae (Granéli and Sundbäck 1985; Howarth, 1988) and, hence, increase the amount of available food for benthic grazers, suspension feeders, and deposit feeders and ultimately for carnivores. As a consequence, abundance and growth responses of invertebrat ...
PART 1: Isle Royale
... During this lab, you will perform your own experiments to study population dynamics using a computer simulation based on a simplified version of the Isle Royale community. The underlying model includes five species: three plants (grasses, maple trees, and balsam fir trees), moose, and wolves. If you ...
... During this lab, you will perform your own experiments to study population dynamics using a computer simulation based on a simplified version of the Isle Royale community. The underlying model includes five species: three plants (grasses, maple trees, and balsam fir trees), moose, and wolves. If you ...
Importance of the Allee effect for reintroductions1
... Allee effect. As reintroductions are almost invariably characterized by small propagule sizes, the importance of the Allee effect must be considered in order to assess its potential impact on the probability of success in reintroductions. In this paper, we highlight the ubiquity of the Allee effect, ...
... Allee effect. As reintroductions are almost invariably characterized by small propagule sizes, the importance of the Allee effect must be considered in order to assess its potential impact on the probability of success in reintroductions. In this paper, we highlight the ubiquity of the Allee effect, ...
Levin, S.A. (editor). Encyclopedia
... attains equilibrium with resources in its environment. The continuous form of this model produces graphs of N against time as an S-shaped curve in which the population grows until N ¼ K and then N remains constant at that value. The assumptions of the logistic growth model are rather restrictive, an ...
... attains equilibrium with resources in its environment. The continuous form of this model produces graphs of N against time as an S-shaped curve in which the population grows until N ¼ K and then N remains constant at that value. The assumptions of the logistic growth model are rather restrictive, an ...
The Ecology of Place: Contributions of Place-Based
... Tempting explanations include environmental or genetic differences that elicit different plant responses—that is, changes in realized or fundamental niches, respectively—but we cannot exclude the possibility that variable responses are artifacts of using different study methods. In the second exampl ...
... Tempting explanations include environmental or genetic differences that elicit different plant responses—that is, changes in realized or fundamental niches, respectively—but we cannot exclude the possibility that variable responses are artifacts of using different study methods. In the second exampl ...
antagonistic interactions between plant competition and insect
... Abstract. Interspecific competition between plants and herbivory by specialized insects can have synergistic effects on the growth and performance of the attacked host plant. We tested the hypothesis that competition between plants may also negatively affect the performance of herbivores as well as t ...
... Abstract. Interspecific competition between plants and herbivory by specialized insects can have synergistic effects on the growth and performance of the attacked host plant. We tested the hypothesis that competition between plants may also negatively affect the performance of herbivores as well as t ...
Population Growth and Interactions
... Banff springs snail also exhibits clumped distribution. Rather than being evenly distributed throughout their habitat, the snails clump around the areas where the spring water emerges from the ground. Artificial populations, such as plants growing in orchards or agricultural fields, often exhibit un ...
... Banff springs snail also exhibits clumped distribution. Rather than being evenly distributed throughout their habitat, the snails clump around the areas where the spring water emerges from the ground. Artificial populations, such as plants growing in orchards or agricultural fields, often exhibit un ...
Omnivore Population Dynamics and Trophic Behavior
... Plant traits can mediate the interactions between plant feeding trophic omnivores and their herbivore prey via density effects and by altering the omnivore’s trophic behavior (plant vs. prey feeding). These bottom-up effects can be important for our mechanistic understanding of omnivory as a stabili ...
... Plant traits can mediate the interactions between plant feeding trophic omnivores and their herbivore prey via density effects and by altering the omnivore’s trophic behavior (plant vs. prey feeding). These bottom-up effects can be important for our mechanistic understanding of omnivory as a stabili ...
PDF
... implicitly trait-based, we here aim to fully place life history trade-offs in a stoichiometric context. This conceptual framework should enhance our ability to predict how communities will respond to changes in nutrient conditions in the environment. ...
... implicitly trait-based, we here aim to fully place life history trade-offs in a stoichiometric context. This conceptual framework should enhance our ability to predict how communities will respond to changes in nutrient conditions in the environment. ...
Traits fonctionnels des arbres : de la plasticité - Archipel
... Examples of t he calcula.tion of net diversity effects (NE), complem entarity (CE ) and selection effects (SE) foll owing addit ive partitioning (Loreau and Hector 2001 ) as well as relative yields (RY, deWit, 1960) for different mixture effects. All mixt ures have two sp ecies initia.lly pla.nted i ...
... Examples of t he calcula.tion of net diversity effects (NE), complem entarity (CE ) and selection effects (SE) foll owing addit ive partitioning (Loreau and Hector 2001 ) as well as relative yields (RY, deWit, 1960) for different mixture effects. All mixt ures have two sp ecies initia.lly pla.nted i ...
Chapter 10: Protected Matters under the EPBC Act
... Rock-wallaby in the rocky habitats of the mine site area. In December 2011, diurnal surveys were undertaken by two ecologists over two days, in and around the mine site. In July 2015, 65 survey sites were spread over a 650 km2 area in the eastern end of the Reynolds Range, Hann Range, Reaphook Hills ...
... Rock-wallaby in the rocky habitats of the mine site area. In December 2011, diurnal surveys were undertaken by two ecologists over two days, in and around the mine site. In July 2015, 65 survey sites were spread over a 650 km2 area in the eastern end of the Reynolds Range, Hann Range, Reaphook Hills ...
Consumer versus resource control of producer producer community structure
... control of producer biomass occurred largely at the plantherbivore link (24–26). We lack similar information on the importance and interdependency of top-down and bottom-up factors mediating producer diversity across systems. Two previous reviews (27, 28) on the interactive effects of resource avail ...
... control of producer biomass occurred largely at the plantherbivore link (24–26). We lack similar information on the importance and interdependency of top-down and bottom-up factors mediating producer diversity across systems. Two previous reviews (27, 28) on the interactive effects of resource avail ...
Enhancing species distribution modeling by characterizing predator
... (i.e., hunting) should be geographically nested within the more general SDM distribution model. We show, however, that this expectation was not supported in a case study of the predator–prey interactions between the Canada lynx (Lynx canadensis) and its primary prey, snowshoe hare (Lepus americanus) ...
... (i.e., hunting) should be geographically nested within the more general SDM distribution model. We show, however, that this expectation was not supported in a case study of the predator–prey interactions between the Canada lynx (Lynx canadensis) and its primary prey, snowshoe hare (Lepus americanus) ...
Colonization in metapopulations: a review of
... The Richter-Dyn/Goel model is quite similar to the MacArthur/Wilson model, but has a logistic density dependence. The predictions from this model are also similar, including the existence of a critical population size, above which extinction is highly improbable. This critical population size is the ...
... The Richter-Dyn/Goel model is quite similar to the MacArthur/Wilson model, but has a logistic density dependence. The predictions from this model are also similar, including the existence of a critical population size, above which extinction is highly improbable. This critical population size is the ...
Ecology Practice Questions - Miami Beach Senior High School
... 50. Base your answer on the accompanying passage which describes an ecosystem in New York State and on your knowledge of biology. The Pine Bush ecosystem near Albany, New York, is one of the last known habitats of the nearly extinct Karner Blue butterfly. The butterfly's larvae feed on the wild gree ...
... 50. Base your answer on the accompanying passage which describes an ecosystem in New York State and on your knowledge of biology. The Pine Bush ecosystem near Albany, New York, is one of the last known habitats of the nearly extinct Karner Blue butterfly. The butterfly's larvae feed on the wild gree ...
Zooplankton population dynamics: measuring in situ growth and
... 120 m deep, separated by shallows of 50 m. Sørfjorden is nearly enclosed from Ullsfjorden by a 400 m wide sill with a mean depth of only 8 m. The taxonomy of zooplankton in Sørfjorden is dominated by only 2 species, Calanus finmarchicus and euphausiids. These special physical and biological settings ...
... 120 m deep, separated by shallows of 50 m. Sørfjorden is nearly enclosed from Ullsfjorden by a 400 m wide sill with a mean depth of only 8 m. The taxonomy of zooplankton in Sørfjorden is dominated by only 2 species, Calanus finmarchicus and euphausiids. These special physical and biological settings ...