Nature Unbound: Chapter 8
... Every place on earth—each marsh, each prairie, each leaf at the tip of a white oak—is shared by many coexisting populations. They form what ecologists refer to as a biological community, a group of populations that live and interact in the same place at the same time. Organisms within a community ar ...
... Every place on earth—each marsh, each prairie, each leaf at the tip of a white oak—is shared by many coexisting populations. They form what ecologists refer to as a biological community, a group of populations that live and interact in the same place at the same time. Organisms within a community ar ...
Restoration of tropical dry forests in Hawaii: Can
... collect scientifically rigorous and meaningful data from these experiments we had to include appropriate control treatments (e.g., growing these plants in highly unfavorable conditions such as within dense stands of fountain grass or barren lava outcrops) that to non-scientists often appeared illogi ...
... collect scientifically rigorous and meaningful data from these experiments we had to include appropriate control treatments (e.g., growing these plants in highly unfavorable conditions such as within dense stands of fountain grass or barren lava outcrops) that to non-scientists often appeared illogi ...
sympatric speciation
... • “Evo-devo” is a field of interdisciplinary research that examines how slight genetic divergences can become magnified into major morphological differences between species. • A particular focus are genes that program development by controlling the rate, timing, and spatial pattern of changes in for ...
... • “Evo-devo” is a field of interdisciplinary research that examines how slight genetic divergences can become magnified into major morphological differences between species. • A particular focus are genes that program development by controlling the rate, timing, and spatial pattern of changes in for ...
Cipdactions.m030402
... including the timber wolf, peregrine falcon and California condor: Relationships of these species to their physical environments and their interactions or roles as predator and/or prey to other species in their ecosystems; background and current developments relating to these and other wildlife spec ...
... including the timber wolf, peregrine falcon and California condor: Relationships of these species to their physical environments and their interactions or roles as predator and/or prey to other species in their ecosystems; background and current developments relating to these and other wildlife spec ...
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... as the abundance of focal organisms changes). Thus, species might differ in how they use resources, in their resistance to different natural enemies and in their response to abiotic conditions. Of course many species are highly plastic, especially plants. When competitors are removed, the remaining ...
... as the abundance of focal organisms changes). Thus, species might differ in how they use resources, in their resistance to different natural enemies and in their response to abiotic conditions. Of course many species are highly plastic, especially plants. When competitors are removed, the remaining ...
Felis nigripes, Black-footed Cat
... items were unavailable during winter, when larger birds and mammals (> 100 g) were mainly consumed. Small rodents like the large-eared mouse (Malacothrix typica), captured 595 times by both sexes, were particularly important during the reproductive season for females with kittens. Male black-footed ...
... items were unavailable during winter, when larger birds and mammals (> 100 g) were mainly consumed. Small rodents like the large-eared mouse (Malacothrix typica), captured 595 times by both sexes, were particularly important during the reproductive season for females with kittens. Male black-footed ...
Elephants and Ecosystems
... 2. They can live to at least 65 years in the wild; there are records of Indian elephants living until 80. 3. Elephants have a very long developmental period with an extended period of social dependency on matriarchal family groups lasting 10 or more years. 4. Elephant social life is complex yet flex ...
... 2. They can live to at least 65 years in the wild; there are records of Indian elephants living until 80. 3. Elephants have a very long developmental period with an extended period of social dependency on matriarchal family groups lasting 10 or more years. 4. Elephant social life is complex yet flex ...
Effects of predation risk on group size, vigilance
... Antipredator responses to large carnivores and the costs of response Until very recently, most discussions of predation in the context of ungulate population dynamics focused solely on direct mortality, but if predation risk affects the demography and dynamics of ungulates as it does other species ( ...
... Antipredator responses to large carnivores and the costs of response Until very recently, most discussions of predation in the context of ungulate population dynamics focused solely on direct mortality, but if predation risk affects the demography and dynamics of ungulates as it does other species ( ...
Exploring the Lotka-Volterra Competition Model using Two Species
... differ in their resource use, the more likely it is that they can, in fact, coexist (Krebs 1994). Even two species with a great deal of overlap may live together for some time, although competitive interactions often suppress the growth rate of one or both of them. Over time, an interesting phenomen ...
... differ in their resource use, the more likely it is that they can, in fact, coexist (Krebs 1994). Even two species with a great deal of overlap may live together for some time, although competitive interactions often suppress the growth rate of one or both of them. Over time, an interesting phenomen ...
How many bird extinctions have we prevented?
... during 1994–2004, (c) are believed on present knowledge to have still been extant in 1994 and remained extant in 2004, (d) had a minimum population estimated to be ,100 individuals in 1994 or had a population that was estimated to be ,200 individuals and estimated, inferred or suspected to be declin ...
... during 1994–2004, (c) are believed on present knowledge to have still been extant in 1994 and remained extant in 2004, (d) had a minimum population estimated to be ,100 individuals in 1994 or had a population that was estimated to be ,200 individuals and estimated, inferred or suspected to be declin ...
Life Sciences Subject Matter Requirements Content Domains for
... Permission is granted to make copies of this document for noncommercial use by educators. ...
... Permission is granted to make copies of this document for noncommercial use by educators. ...
101 - Bossier Parish Community College
... descent. (C) state the sources of variation in a population of sexually reproducing diploid organisms. (C,D) explain the Hardy-Weinberg rule. (C,D) list and discuss the agents of evolutionary change. (C) distinguish between directional, stabilizing, and disruptive selection by giving examples. (D) e ...
... descent. (C) state the sources of variation in a population of sexually reproducing diploid organisms. (C,D) explain the Hardy-Weinberg rule. (C,D) list and discuss the agents of evolutionary change. (C) distinguish between directional, stabilizing, and disruptive selection by giving examples. (D) e ...
Biology 30 A - Holy Trinity Academy
... 1. list the components of a reflex arc and trace the pathway of a reflex arc to and from the spinal cord 2. design and perform an experiment to investigate the physiology of reflex arcs. C identifying the principal structures of the central and peripheral nervous systems and explaining their funct ...
... 1. list the components of a reflex arc and trace the pathway of a reflex arc to and from the spinal cord 2. design and perform an experiment to investigate the physiology of reflex arcs. C identifying the principal structures of the central and peripheral nervous systems and explaining their funct ...
Biology 30 A.P. program
... 1. list the components of a reflex arc and trace the pathway of a reflex arc to and from the spinal cord 2. design and perform an experiment to investigate the physiology of reflex arcs. C identifying the principal structures of the central and peripheral nervous systems and explaining their funct ...
... 1. list the components of a reflex arc and trace the pathway of a reflex arc to and from the spinal cord 2. design and perform an experiment to investigate the physiology of reflex arcs. C identifying the principal structures of the central and peripheral nervous systems and explaining their funct ...
Recent Advances in the Integrative Nutrition of
... factors such as temperature to determine the quality of plants as food for insect herbivores, with most work having been done on those with chewing mouthparts. Determining the nutritional quality of a plant for an herbivore is not as simple as grinding up and measuring the chemical composition of pl ...
... factors such as temperature to determine the quality of plants as food for insect herbivores, with most work having been done on those with chewing mouthparts. Determining the nutritional quality of a plant for an herbivore is not as simple as grinding up and measuring the chemical composition of pl ...
Journal of Animal - Centre d`études biologiques de Chizé
... Journal of Animal Ecology (2002) 71, 723-734 ...
... Journal of Animal Ecology (2002) 71, 723-734 ...
Trait matching of flower visitors and crops predicts
... In some crop systems, ants (Hymenoptera: Formicidae), syrphid flies (Diptera: Syrphidae), other flies and various beetle species (Coleoptera) were common flower visitors. We also measured fruit set, which is usually correlated with crop yield across fields (e.g. see Figure S1 in Garibaldi et al. (20 ...
... In some crop systems, ants (Hymenoptera: Formicidae), syrphid flies (Diptera: Syrphidae), other flies and various beetle species (Coleoptera) were common flower visitors. We also measured fruit set, which is usually correlated with crop yield across fields (e.g. see Figure S1 in Garibaldi et al. (20 ...
FORESTRY 215 - FOREST ECOLOGY SYLLABUS SPRING 2017
... By the end of the course, students should be able to read the lay of the land in relation to how productive and diverse different locations are likely to be, what disturbances and other abiotic factors are likely to be important, what stages of succession and forest development are present, and how ...
... By the end of the course, students should be able to read the lay of the land in relation to how productive and diverse different locations are likely to be, what disturbances and other abiotic factors are likely to be important, what stages of succession and forest development are present, and how ...
Document
... TAKS PRACTICE Which of the following best describes a difference between a mutualistic relationship and a parasitic relationship? F Parasitism harms both organisms, while mutualism harms only one organism. G Parasitism benefits only one organism, while mutualism benefits both organisms. H Parasitis ...
... TAKS PRACTICE Which of the following best describes a difference between a mutualistic relationship and a parasitic relationship? F Parasitism harms both organisms, while mutualism harms only one organism. G Parasitism benefits only one organism, while mutualism benefits both organisms. H Parasitis ...
Terrestrial Salamander Monitoring Project
... young … reproductive strategy? • no lungs – respire through skin, must avoid dessication • cold-blooded • territorial and aggressive ...
... young … reproductive strategy? • no lungs – respire through skin, must avoid dessication • cold-blooded • territorial and aggressive ...
trophic levels and trophic tangles
... chain). A food web with only two trophic levels will show less omnivory because taxa have a higher probability of feeding at a single trophic level. In contrast, when food webs have long food chains, taxa have a higher potential to encounter prey items with a range of trophic positions. The food web ...
... chain). A food web with only two trophic levels will show less omnivory because taxa have a higher probability of feeding at a single trophic level. In contrast, when food webs have long food chains, taxa have a higher potential to encounter prey items with a range of trophic positions. The food web ...
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.