Midterm Review PPT WKST
... Organisms tend to be very well suited to their natural habitats. If fact, animals and plants usually cannot survive for long periods of time away from their natural habitat. ...
... Organisms tend to be very well suited to their natural habitats. If fact, animals and plants usually cannot survive for long periods of time away from their natural habitat. ...
Macroevolution 11/18/04 Macroevolution
... Note, for starters, the rapid rates of origination in the Cambrian and Ordovician and the rapid rates in the Triassic. In the case of the Cambrian and Ordovician, origination seems to have been a rapid infilling of available ways of life (the “Cambrian Explosion” of “Biological Big Bang”) a phenomen ...
... Note, for starters, the rapid rates of origination in the Cambrian and Ordovician and the rapid rates in the Triassic. In the case of the Cambrian and Ordovician, origination seems to have been a rapid infilling of available ways of life (the “Cambrian Explosion” of “Biological Big Bang”) a phenomen ...
What is Ecology? - World of Teaching
... http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching. ...
... http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching. ...
Acta Oecologica-International Journal of Ecology
... Although the spatial niche overlap values between most paired species are very low, according to common niche theory, this does not prove that interspecific competition was the structuring force which produced the observed pattern, nor that competitive interactions are presently excluded by space se ...
... Although the spatial niche overlap values between most paired species are very low, according to common niche theory, this does not prove that interspecific competition was the structuring force which produced the observed pattern, nor that competitive interactions are presently excluded by space se ...
We must not let a forest full of trees fool us into believing all is well
... _______________________________ as Keystone Species • Christian observed native ants disperse 30% of shrubland seeds in fynbos of South Africa. – Seed-dispersing ants bury seeds in sites safe from predators and fire. • Argentine ants have displaced many native ant species that ...
... _______________________________ as Keystone Species • Christian observed native ants disperse 30% of shrubland seeds in fynbos of South Africa. – Seed-dispersing ants bury seeds in sites safe from predators and fire. • Argentine ants have displaced many native ant species that ...
Vasco Lepori
... Biotic conditions: Interspecific interactions are also important, possibly more so in warmer and in more species-rich environments (Hargreaves et al. 2014). Parasites and predators for example, especially specific ones, are limited by the distribution of their hosts and prey, respectively. Many rang ...
... Biotic conditions: Interspecific interactions are also important, possibly more so in warmer and in more species-rich environments (Hargreaves et al. 2014). Parasites and predators for example, especially specific ones, are limited by the distribution of their hosts and prey, respectively. Many rang ...
Global change and evolution.ppt [Read
... …loads of very diverse species with complex bodies, heads, guts, mouths, legs, hard carapaces. What sparked this diversity? O2 increase, predator prey coevol, and evol of Hox gene complex (key innovation) ...
... …loads of very diverse species with complex bodies, heads, guts, mouths, legs, hard carapaces. What sparked this diversity? O2 increase, predator prey coevol, and evol of Hox gene complex (key innovation) ...
National ecological observatory network
... gauge, generator / power run, parking area, and boardwalks. Core aquatic / STREON site will be northeast of core tower location at Oks creek. Site will include sensors, groundwater wells, met station, streambed experiment baskets, and boardwalks. Relocatable aquatics site at Toolik Lake. Site will i ...
... gauge, generator / power run, parking area, and boardwalks. Core aquatic / STREON site will be northeast of core tower location at Oks creek. Site will include sensors, groundwater wells, met station, streambed experiment baskets, and boardwalks. Relocatable aquatics site at Toolik Lake. Site will i ...
Ch 4 Student Lecture
... ______________________: Ecosystems are slightly changing, but most remain stable, unless large natural disasters occur or human interaction takes place. This change over time is called ___________________________ ...
... ______________________: Ecosystems are slightly changing, but most remain stable, unless large natural disasters occur or human interaction takes place. This change over time is called ___________________________ ...
Scientific Evidence from Anatomy, Embryology, Biochemistry, and
... Challenge of using fossil record as a map of evolutionary history = record is incomplete Millions of fossils have been discovered, but still large gaps exist Many environmental conditions must be to create a fossil and the chance of all of these conditions being met at once is very rare Foss ...
... Challenge of using fossil record as a map of evolutionary history = record is incomplete Millions of fossils have been discovered, but still large gaps exist Many environmental conditions must be to create a fossil and the chance of all of these conditions being met at once is very rare Foss ...
Power Point Part 1
... Habitat = An area where an organism lives – One tree (for an organism that spends its entire life in a tree) – Grove of trees (for an organism that moves from tree to tree) – What types of resources do species find in their habitats? ...
... Habitat = An area where an organism lives – One tree (for an organism that spends its entire life in a tree) – Grove of trees (for an organism that moves from tree to tree) – What types of resources do species find in their habitats? ...
trophic level
... Principle of Competitive Exclusion (Gause’s experiments) • Two species which compete for same resource cannot coexist in same place at same time • Implications = different locations or different times • Relates directly to niche concept ...
... Principle of Competitive Exclusion (Gause’s experiments) • Two species which compete for same resource cannot coexist in same place at same time • Implications = different locations or different times • Relates directly to niche concept ...
Populations and Communities
... Ecology - the study of how organisms interact with their environment Organism - a living thing Habitat - the specific environment that provides the things an organism needs to live, grow, and reproduce ...
... Ecology - the study of how organisms interact with their environment Organism - a living thing Habitat - the specific environment that provides the things an organism needs to live, grow, and reproduce ...
Introduction to the Population and Community Ontology (PCO)
... • interspecies interaction between organisms (GO:0044419): Any process in which an organism has an effect on an organism of a different species. • intraspecies interaction between organisms (GO:0051703): Any process in which an organism has an effect on an organism of the same species. • behavioral ...
... • interspecies interaction between organisms (GO:0044419): Any process in which an organism has an effect on an organism of a different species. • intraspecies interaction between organisms (GO:0051703): Any process in which an organism has an effect on an organism of the same species. • behavioral ...
Chapter 21 Community Ecology
... Common Use of Scarce Resources Leads to Competition - Competition: ecological interaction between two or more species that use the same scarce resource such as food, light and water o Most competition does not involve fighting Some competing species never encounter one another: they interact only ...
... Common Use of Scarce Resources Leads to Competition - Competition: ecological interaction between two or more species that use the same scarce resource such as food, light and water o Most competition does not involve fighting Some competing species never encounter one another: they interact only ...
Three Kings Vine / Native Bignonia
... which create shelter for the spiders. Other threats come from introduced spider species that attempt to establish themselves in the same habitat thereby displacing the native species. Katipos lose their ecological niche to foreign spiders such as the Australian red-back, which is more aggressive and ...
... which create shelter for the spiders. Other threats come from introduced spider species that attempt to establish themselves in the same habitat thereby displacing the native species. Katipos lose their ecological niche to foreign spiders such as the Australian red-back, which is more aggressive and ...
Lecture 17 CH 21+23+24 SPECIES ABUNDANCE + DIVERSITY
... 2. Species diversity is quantified by combining the number of species (species richness) and their relative abundance. 3. Species diversity is defined at multiple spatial scales (local to global). 4. Local diversity is affected by abiotic factors, biological interactions, dispersal limitation, and h ...
... 2. Species diversity is quantified by combining the number of species (species richness) and their relative abundance. 3. Species diversity is defined at multiple spatial scales (local to global). 4. Local diversity is affected by abiotic factors, biological interactions, dispersal limitation, and h ...
Species - Be a San Francisco Zoo Docent
... Speciation happens when a subset gets isolated from the rest of the population and don’t interbreed any more. One population may be developing traits in response to environmental characteristics that are present only for their population, passing on features distinctly different than those of the fi ...
... Speciation happens when a subset gets isolated from the rest of the population and don’t interbreed any more. One population may be developing traits in response to environmental characteristics that are present only for their population, passing on features distinctly different than those of the fi ...
Transgenic crops—why gene flow matters
... Third, certain crop types will require new approaches to risk assessment. For trees and other long-lived species, for instance, gene flow is best studied by a combination of empirical studies and simulation models because multigeneration field studies are not feasible. Fourth, a range of possible fi ...
... Third, certain crop types will require new approaches to risk assessment. For trees and other long-lived species, for instance, gene flow is best studied by a combination of empirical studies and simulation models because multigeneration field studies are not feasible. Fourth, a range of possible fi ...
5.1 Habitats and Niches
... theoretically occupy. Realized niche * The niche that an organism actually occupies which could be less extensive (smaller) than the fundamental niche. Read p.74 about barnacles ...
... theoretically occupy. Realized niche * The niche that an organism actually occupies which could be less extensive (smaller) than the fundamental niche. Read p.74 about barnacles ...
Basin Biodiversity Grades: 6-12 Time: 45 minutes Rationale and
... Ecosystems have carrying capacities resulting from biotic resulting from biotic and abiotic factors. The fundamental tension between resource availability and organism populations affects the abundance of species in any given ecosystem. If a biological or physical disturbance to an ecosystem occurs, ...
... Ecosystems have carrying capacities resulting from biotic resulting from biotic and abiotic factors. The fundamental tension between resource availability and organism populations affects the abundance of species in any given ecosystem. If a biological or physical disturbance to an ecosystem occurs, ...
Ecological fitting
Ecological fitting is ""the process whereby organisms colonize and persist in novel environments, use novel resources or form novel associations with other species as a result of the suites of traits that they carry at the time they encounter the novel condition.” It can be understood as a situation in which a species' interactions with its biotic and abiotic environment seem to indicate a history of coevolution, when in actuality the relevant traits evolved in response to a different set of biotic and abiotic conditions. The simplest form of ecological fitting is resource tracking, in which an organism continues to exploit the same resources, but in a new host or environment. In this framework, the organism occupies a multidimensional operative environment defined by the conditions in which it can persist, similar to the idea of the Hutchinsonian niche. In this case, a species can colonize new environments (e.g. an area with the same temperature and water regime) and/or form new species interactions (e.g. a parasite infecting a new host) which can lead to the misinterpretation of the relationship as coevolution, although the organism has not evolved and is continuing to exploit the same resources it always has. The more strict definition of ecological fitting requires that a species encounter an environment or host outside of its original operative environment and obtain realized fitness based on traits developed in previous environments that are now co-opted for a new purpose. This strict form of ecological fitting can also be expressed either as colonization of new habitat or the formation of new species interactions.