![Community assembly metrics](http://s1.studyres.com/store/data/003376419_1-aa2992d2ba3cb2fe7cb35528a7235b2c-300x300.png)
Community assembly metrics
... Results in a somewhat more even distribution of abundances among species than the other models, which suggests that it should occur when an important resource is shared more or less equitably among species ...
... Results in a somewhat more even distribution of abundances among species than the other models, which suggests that it should occur when an important resource is shared more or less equitably among species ...
New species evolve in bursts
... Conversely, almost 80% of the trees fitted a model in which new species emerge from single rare evolutionary events. The Red Queen, it seems, is not running to keep up, but jumping a longer distance and then pausing for a while1. "What we've shown is that speciation is about happy accidents — rare e ...
... Conversely, almost 80% of the trees fitted a model in which new species emerge from single rare evolutionary events. The Red Queen, it seems, is not running to keep up, but jumping a longer distance and then pausing for a while1. "What we've shown is that speciation is about happy accidents — rare e ...
The biology of insularity: an introduction
... analyse adaptive radiation within the spider genus Tetragnatha in three Polynesian archipelagoes. She found that each archipelago was colonized independently by continental ancestors rather than by island-hopping spiders from nearby islands. After colonization, each spider lineage radiated into mult ...
... analyse adaptive radiation within the spider genus Tetragnatha in three Polynesian archipelagoes. She found that each archipelago was colonized independently by continental ancestors rather than by island-hopping spiders from nearby islands. After colonization, each spider lineage radiated into mult ...
Lab 5 - Testing a Competition Model with Wasps
... insects), but estimates of their number run as high as 800,000 (Strand 2002). Of the described species, about 80% are members of the order Hymenoptera, as are the two species you are using in this lab. In nature, hosts can be parasitized by more than one species of parasitoid, all competing for the ...
... insects), but estimates of their number run as high as 800,000 (Strand 2002). Of the described species, about 80% are members of the order Hymenoptera, as are the two species you are using in this lab. In nature, hosts can be parasitized by more than one species of parasitoid, all competing for the ...
Linking Community and Ecosystem Ecology (LINKECOL)
... dynamics, evolution, diversity and complexity of the biological components of ecosystems; its starting point is the population and its interactions with other populations. Ecosystem ecology is mainly concerned with the functioning of the overall system composed of biological organisms and their abio ...
... dynamics, evolution, diversity and complexity of the biological components of ecosystems; its starting point is the population and its interactions with other populations. Ecosystem ecology is mainly concerned with the functioning of the overall system composed of biological organisms and their abio ...
Glossary Ecology
... Interspecific C.: Competition between individuals for the same limited resources by different species (exclusion principle of Gausse) competing species relying on the same ecological resources cannot exist together. Intraspecific C.: Competition between individuals for the same limited resources by ...
... Interspecific C.: Competition between individuals for the same limited resources by different species (exclusion principle of Gausse) competing species relying on the same ecological resources cannot exist together. Intraspecific C.: Competition between individuals for the same limited resources by ...
Biodiversity in the CIT Region - Ministry of Forests, Lands and
... Many of these insular endemic taxa probably result from isolation and survival in Pleistocene glacial refugia, as on Haida Gwaii and the Brooks Peninsula (Warner and others 1982; Hebda and Haggarty 1997). Biogeographic evidence supporting a Haida Gwaii refugium comes from mammals (Foster 1965), bird ...
... Many of these insular endemic taxa probably result from isolation and survival in Pleistocene glacial refugia, as on Haida Gwaii and the Brooks Peninsula (Warner and others 1982; Hebda and Haggarty 1997). Biogeographic evidence supporting a Haida Gwaii refugium comes from mammals (Foster 1965), bird ...
AP Bio Winter Break Assignment
... 5. What is the difference between a food chain and a food web? 6. What are 2 hypotheses about why food chains are so short? ...
... 5. What is the difference between a food chain and a food web? 6. What are 2 hypotheses about why food chains are so short? ...
Chapter 5 Powerpoint ch5powerpoint
... benefits both, e.g., lichens consist of algae & fungi that benefit each other (in this example can't live apart); commensalism: one organism benefits from another, but neither helps nor harm that other organism, e.g., epiphyte growing on a tree (epiphyte benefits & tree not effected, unless there ...
... benefits both, e.g., lichens consist of algae & fungi that benefit each other (in this example can't live apart); commensalism: one organism benefits from another, but neither helps nor harm that other organism, e.g., epiphyte growing on a tree (epiphyte benefits & tree not effected, unless there ...
Word File - UNESCO World Heritage Centre
... in Northeast Asia are all presented in Changbai Mountain. Criterion (viii): The nominated property is the most representative region in studying the uplift and formation evolution, mountain formation and volcanic mechanism of Changbai Mountains--the highest mountain range in Northeast China. As a ty ...
... in Northeast Asia are all presented in Changbai Mountain. Criterion (viii): The nominated property is the most representative region in studying the uplift and formation evolution, mountain formation and volcanic mechanism of Changbai Mountains--the highest mountain range in Northeast China. As a ty ...
Ecology and River Restoration - the River Restoration Centre
... type deviate moderately from those normally associated with the surface water body type under undisturbed conditions. The values show moderate signs of distortion resulting from human activity and are significantly more disturbed than under conditions of good status. ...
... type deviate moderately from those normally associated with the surface water body type under undisturbed conditions. The values show moderate signs of distortion resulting from human activity and are significantly more disturbed than under conditions of good status. ...
A General Approach to the Modelling of Trophic Chains
... conservation on the dynamics of communities has been ascertained (De Angelis et al., 1989). On the other hand, one of the problems with the complexity of ecological systems is that there may exist internal states of the systems which we cannot measure (Arditi and Ginzburg, 1989). There is a systemat ...
... conservation on the dynamics of communities has been ascertained (De Angelis et al., 1989). On the other hand, one of the problems with the complexity of ecological systems is that there may exist internal states of the systems which we cannot measure (Arditi and Ginzburg, 1989). There is a systemat ...
Parasitology Meets Ecology on Its Own Terms
... its utilitarian purpose. We review all terms discussed originally in Margolis et al. (1982). Our choice of terms relating to communities is selective. We discuss several general descriptive terms, some specific terms that we feel are frequently used improperly, and other terms that we feel warrant a ...
... its utilitarian purpose. We review all terms discussed originally in Margolis et al. (1982). Our choice of terms relating to communities is selective. We discuss several general descriptive terms, some specific terms that we feel are frequently used improperly, and other terms that we feel warrant a ...
Biological Diversity in Forest Ecosystems
... native tree species, and the distribution of features (e.g., abiotic features, retention areas, corridors, edges) within and among stands (Dale et al. 2000). In both landscape contexts, consideration of societal interests will be essential to address nonnative species and uses such as hunting and fi ...
... native tree species, and the distribution of features (e.g., abiotic features, retention areas, corridors, edges) within and among stands (Dale et al. 2000). In both landscape contexts, consideration of societal interests will be essential to address nonnative species and uses such as hunting and fi ...
AP Exam - TeacherWeb
... United States) have made claims to Antarctica, no single nation controls any part of the continent. The Antarctic Treaty governs the actions of people in Antarctica. 12 nations listed in the preamble signed the Antarctic Treaty on 1 December 1959 at Washington, D.C. The Treaty entered into force on ...
... United States) have made claims to Antarctica, no single nation controls any part of the continent. The Antarctic Treaty governs the actions of people in Antarctica. 12 nations listed in the preamble signed the Antarctic Treaty on 1 December 1959 at Washington, D.C. The Treaty entered into force on ...
EBIO Honors Program: Faculty Advisors
... thesis. Graduation with departmental, Latin Honors is dependent on your performance in the written thesis, defense of the thesis, and your GPA. To help you along the way, there is a one-credit class (EBIO 4980) that Honors students take in the Spring, where you’ll give a practice defense and engage ...
... thesis. Graduation with departmental, Latin Honors is dependent on your performance in the written thesis, defense of the thesis, and your GPA. To help you along the way, there is a one-credit class (EBIO 4980) that Honors students take in the Spring, where you’ll give a practice defense and engage ...
WORDS BY ALAN WATSON FEATHERSTONE, FOUNDER OF
... and excessive numbers of these herbivores have prevented the establishment of any new trees in most places for 150-200 years, leaving the surviving forest remnants as ‘geriatric woodlands’ consisting only of old trees, that are dying off without being replaced. In the last two or three decades, cons ...
... and excessive numbers of these herbivores have prevented the establishment of any new trees in most places for 150-200 years, leaving the surviving forest remnants as ‘geriatric woodlands’ consisting only of old trees, that are dying off without being replaced. In the last two or three decades, cons ...
BCB322: Landscape Ecology - University of Western Cape
... • Transition zones between adjacent systems, with characters defined by scale & interactions between these zones • Situated where rate & dimension of ecological transfers changes • Found at all spatial (biome to individual) & temporal (millennia – daily) scales • Hard to study because patterns vanis ...
... • Transition zones between adjacent systems, with characters defined by scale & interactions between these zones • Situated where rate & dimension of ecological transfers changes • Found at all spatial (biome to individual) & temporal (millennia – daily) scales • Hard to study because patterns vanis ...
In his 1967 work A Darwinian Approach to Plant Ecology, J
... tested the conditions in which Harper thought these types of species would thrive based on their life histories. The r-strategist was found in upper intertidal regions because it could persist with large fluctuations in temperature and salinity. The K-strategist works well in areas where there is le ...
... tested the conditions in which Harper thought these types of species would thrive based on their life histories. The r-strategist was found in upper intertidal regions because it could persist with large fluctuations in temperature and salinity. The K-strategist works well in areas where there is le ...
Oecología
... species except S . poinsetti. For a southwestern New Mexico population of S . poinsetti, Ballinger (1978) showed that there was an increase in plant consumption during early summer. when insect food is likely to be limited. Thus, the decrease in plant consumption observed a t La Michiliá between the ...
... species except S . poinsetti. For a southwestern New Mexico population of S . poinsetti, Ballinger (1978) showed that there was an increase in plant consumption during early summer. when insect food is likely to be limited. Thus, the decrease in plant consumption observed a t La Michiliá between the ...
laurencia nidifica
... alga that is often found in communities with Acanthophora spicifera, Hypnea musciformis and H. cervicornis. L. nidifica and A. spicifera are often found attached to one another or even entangled. L. nidifica was recorded in Hawaii as early as 1863, leading to the belief that it is an indigenous spec ...
... alga that is often found in communities with Acanthophora spicifera, Hypnea musciformis and H. cervicornis. L. nidifica and A. spicifera are often found attached to one another or even entangled. L. nidifica was recorded in Hawaii as early as 1863, leading to the belief that it is an indigenous spec ...
Ecosystems and Communities
... • When organisms live together in ecological communities, they interact constantly. – Community interactions, such as competition, predation, and various forms of symbiosis, can affect an ecosystem. ...
... • When organisms live together in ecological communities, they interact constantly. – Community interactions, such as competition, predation, and various forms of symbiosis, can affect an ecosystem. ...
Bio 152 L. R. Fox INTERSPECIFIC COMPETITION Review from your
... Many ecologists have argued that competition is the main ecological process structuring communities, either because of present-day interactions or because of previous competitive encounters. The "importance" of competition was addressed in a debate published in a journal (The American Naturalist) in ...
... Many ecologists have argued that competition is the main ecological process structuring communities, either because of present-day interactions or because of previous competitive encounters. The "importance" of competition was addressed in a debate published in a journal (The American Naturalist) in ...
Study Guide for Final Exam - SBCC Biological Sciences Department
... 16. Differentiate between density-dependent and density-independent factors that regulate populations and provide 4 examples within each type. 17. Define ecological footprint. 18. What is your ecological footprint? 19. Why should we care about ecological footprints? Lecture 25 (11/28/16): Community ...
... 16. Differentiate between density-dependent and density-independent factors that regulate populations and provide 4 examples within each type. 17. Define ecological footprint. 18. What is your ecological footprint? 19. Why should we care about ecological footprints? Lecture 25 (11/28/16): Community ...
Ecological fitting
![](https://en.wikipedia.org/wiki/Special:FilePath/Colorado_potato_beetle.jpg?width=300)
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.