1 - Napa Valley College
... c) may mimic symptoms of chronic diseases. d) produces an effect within a short period of a single exposure. e) always results in death. 37. A dose that is represented as ED50 is a dose that a) is administered to 50% of the population. b) causes 50% of a population to exhibit whatever response is un ...
... c) may mimic symptoms of chronic diseases. d) produces an effect within a short period of a single exposure. e) always results in death. 37. A dose that is represented as ED50 is a dose that a) is administered to 50% of the population. b) causes 50% of a population to exhibit whatever response is un ...
BIOL 112 SM 2014 FNX Q 140724.1
... c) may mimic symptoms of chronic diseases. d) produces an effect within a short period of a single exposure. e) always results in death. 37. A dose that is represented as ED50 is a dose that a) is administered to 50% of the population. b) causes 50% of a population to exhibit whatever response is un ...
... c) may mimic symptoms of chronic diseases. d) produces an effect within a short period of a single exposure. e) always results in death. 37. A dose that is represented as ED50 is a dose that a) is administered to 50% of the population. b) causes 50% of a population to exhibit whatever response is un ...
D3.1 Annex 8b Section 6 Environmental impact pests
... In this question we rate the current environmental impact in other invaded regions that can be used as indicator for determining the potential environmental impact in the PRA area (Q. 6.09). If the species has not invaded any other area, or if the invasion is too recent and too little is known about ...
... In this question we rate the current environmental impact in other invaded regions that can be used as indicator for determining the potential environmental impact in the PRA area (Q. 6.09). If the species has not invaded any other area, or if the invasion is too recent and too little is known about ...
Speciation
... Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings ...
... Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings ...
Coevolution between native and invasive plant competitors
... species with a longer history of association for a few reasons. For one, coevolution between natives and recently introduced exotics might be in the intial stages. For another, imperfect knowledge about invasion history complicates efforts to compare invasions of known age. For these reasons, a pros ...
... species with a longer history of association for a few reasons. For one, coevolution between natives and recently introduced exotics might be in the intial stages. For another, imperfect knowledge about invasion history complicates efforts to compare invasions of known age. For these reasons, a pros ...
Ecological Factors Affecting Community Invasibility
... It can encompass the idea that native consumers or pathogens reduce invader fitness, but is most often conceived of as a product of competition with natives within the same trophic level. In terms of competition, the biotic resistance paradigm usually assumes that communities are both resource-limit ...
... It can encompass the idea that native consumers or pathogens reduce invader fitness, but is most often conceived of as a product of competition with natives within the same trophic level. In terms of competition, the biotic resistance paradigm usually assumes that communities are both resource-limit ...
Population
... Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings ...
... Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings ...
Elements of Ecology (8th Edition)
... Cover Photo Credit: Chris Martin Bahr / Photo Researchers, Inc.: Weaver Ants (Oecophylla sp.) on leaf. ...
... Cover Photo Credit: Chris Martin Bahr / Photo Researchers, Inc.: Weaver Ants (Oecophylla sp.) on leaf. ...
Differential genetic influences on competitive effect and response in
... on plant shoots. Additionally, plants may vary independently in competitive effect and response abilities (Goldberg & Landa 1991), resulting in at least two independent forms of competitive ability. In exploitative (resource) competition, competitive effect represents a plant’s influence on a shared ...
... on plant shoots. Additionally, plants may vary independently in competitive effect and response abilities (Goldberg & Landa 1991), resulting in at least two independent forms of competitive ability. In exploitative (resource) competition, competitive effect represents a plant’s influence on a shared ...
Biological Diversity
... Roman philosopher and writer Cicero put it succinctly: "Who cannot wonder at this harmony of things, at this symphony of nature which seems to will the well-being of the world?" He concluded that "everything in the world is marvelously ordered by divine providence and wisdom for the safety and prote ...
... Roman philosopher and writer Cicero put it succinctly: "Who cannot wonder at this harmony of things, at this symphony of nature which seems to will the well-being of the world?" He concluded that "everything in the world is marvelously ordered by divine providence and wisdom for the safety and prote ...
Ecology: Organisms and their environment
... there! Obtaining food and warmth in the frozen reaches of the Artic is difficult for humans, but polar bears thrive in this icy environment. Environmental factors, such as food availability and temperature that affect an organism’s ability to survive in its environment are limiting factors. A limiti ...
... there! Obtaining food and warmth in the frozen reaches of the Artic is difficult for humans, but polar bears thrive in this icy environment. Environmental factors, such as food availability and temperature that affect an organism’s ability to survive in its environment are limiting factors. A limiti ...
Understanding cooccurrence by modelling species simultaneously
... predictive performance of SDMs (Araujo & Luoto 2007; Heikkinen et al. 2007), and in some cases, biotic predictors have outperformed abiotic variables (Meier et al. 2010). However, this approach only models unidirectional interactions between species and confounds the influence of species interactions ...
... predictive performance of SDMs (Araujo & Luoto 2007; Heikkinen et al. 2007), and in some cases, biotic predictors have outperformed abiotic variables (Meier et al. 2010). However, this approach only models unidirectional interactions between species and confounds the influence of species interactions ...
- The University of Liverpool Repository
... similarly for host-parasite communities, it has been shown that feasible coexistence of the ...
... similarly for host-parasite communities, it has been shown that feasible coexistence of the ...
Interactions between granivorous and omnivorous ants in a desert
... 1.8 ants/plot on bait/colony on Removal and Control plots while granivores averaged 9.8 and 7.0 ants/plot on bait/colony. Following the initiation of the experiment, the number of granivore colonies decreased on Removal plots by about 40% (20 vs. 33.9 colonies/616 m2) as did granivore worker activit ...
... 1.8 ants/plot on bait/colony on Removal and Control plots while granivores averaged 9.8 and 7.0 ants/plot on bait/colony. Following the initiation of the experiment, the number of granivore colonies decreased on Removal plots by about 40% (20 vs. 33.9 colonies/616 m2) as did granivore worker activit ...
The Mechanisms and Consequences of Interspecific Competition
... size, although correlative links between traits and competitive response have often been inconsistent. The difficulty in connecting functional traits to variation in competitive response may be because competitive response is more contingent on abiotic conditions and neighbor identity than competiti ...
... size, although correlative links between traits and competitive response have often been inconsistent. The difficulty in connecting functional traits to variation in competitive response may be because competitive response is more contingent on abiotic conditions and neighbor identity than competiti ...
Where and When do Species Interactions Set Range Limits?
... stress tolerance, but range limits in nonstressful areas are more often set by species interactions. Species interactions: interactions with other organisms that have some effect on individual or population performance, including both positive and negative effects. Stochastic growth rate: population ...
... stress tolerance, but range limits in nonstressful areas are more often set by species interactions. Species interactions: interactions with other organisms that have some effect on individual or population performance, including both positive and negative effects. Stochastic growth rate: population ...
Intra- and interspecific competition among coexisting lotic snails
... considered to be harsh environments in which community structure and function are determined by physical factors and stochastic events such as floods (e.g., Hynes 1970, Minshall and Minshall 1977, Reice 1981, Grossman et al. 1982, 1998, Resh et al. 1988). For benthic macroinvertebrates in particular ...
... considered to be harsh environments in which community structure and function are determined by physical factors and stochastic events such as floods (e.g., Hynes 1970, Minshall and Minshall 1977, Reice 1981, Grossman et al. 1982, 1998, Resh et al. 1988). For benthic macroinvertebrates in particular ...
Herbivore-induced resource sequestration in plants: why bother?
... primary plant metabolism. Recent studies using radioisotopes, for example, have found that insect herbivores and related cues can induce faster export from leaves and roots and greater partitioning into tissues inaccessible to foraging herbivores. This process, termed induced resource sequestration, ...
... primary plant metabolism. Recent studies using radioisotopes, for example, have found that insect herbivores and related cues can induce faster export from leaves and roots and greater partitioning into tissues inaccessible to foraging herbivores. This process, termed induced resource sequestration, ...
Some historic landmarks
... Stephen P. Hubbell (b. 1942) Neutral theory… asks how well community-level patterns conform to predictions under the simplifying assumption that all individuals are equal (in terms of probability of recruiting, dying, and replacing themselves through reproduction) “When we look at the plants and bus ...
... Stephen P. Hubbell (b. 1942) Neutral theory… asks how well community-level patterns conform to predictions under the simplifying assumption that all individuals are equal (in terms of probability of recruiting, dying, and replacing themselves through reproduction) “When we look at the plants and bus ...
How do native species respond to invaders? Mechanistic and trait
... multiple threats and are already genetically impoverished (Strauss et al. 2006). A low genetic diversity, usually coupled with a low population size, confers a low capacity for an evolutionary response, as genotypes are either equally affected by the selection pressure, or are otherwise dominated by ...
... multiple threats and are already genetically impoverished (Strauss et al. 2006). A low genetic diversity, usually coupled with a low population size, confers a low capacity for an evolutionary response, as genotypes are either equally affected by the selection pressure, or are otherwise dominated by ...
Plant functional traits and the multidimensional nature of species
... This article contains supporting information online at www.pnas.org/lookup/suppl/doi:10. 1073/pnas.1413650112/-/DCSupplemental. ...
... This article contains supporting information online at www.pnas.org/lookup/suppl/doi:10. 1073/pnas.1413650112/-/DCSupplemental. ...
Different but equal: the implausible assumption at the heart of
... communities on the niche-strength continuum, it is therefore also important to consider, based on first principles, how likely does neutrality seem? Thinking in Bayesian terms (Clark 2004), we could formalize this expectation as a prior for the distribution of communities along the niche-strength con ...
... communities on the niche-strength continuum, it is therefore also important to consider, based on first principles, how likely does neutrality seem? Thinking in Bayesian terms (Clark 2004), we could formalize this expectation as a prior for the distribution of communities along the niche-strength con ...
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... organisms, these factors (abiotic and biotic) cannot be viewed in isolation. Both types are also referred to as limiting factors, since they determine the types and number of organisms in the environment. For example, plant growth is restricted in the tundra due to the short, cool summers, coupled w ...
... organisms, these factors (abiotic and biotic) cannot be viewed in isolation. Both types are also referred to as limiting factors, since they determine the types and number of organisms in the environment. For example, plant growth is restricted in the tundra due to the short, cool summers, coupled w ...
Plant–pollinator interactions and the assembly of plant
... pollinators, and higher visitation rates to existing species. Moreover, I. glandulifera was more likely to be visited by generalist insects, suggesting that it does not require specialist pollinators to invade a community. The results of this study suggest that native pollinators, especially general ...
... pollinators, and higher visitation rates to existing species. Moreover, I. glandulifera was more likely to be visited by generalist insects, suggesting that it does not require specialist pollinators to invade a community. The results of this study suggest that native pollinators, especially general ...