Chapter 53 lecture outline
... in which a salmon returns to freshwater streams to spawn and then die. o This pattern, known as semelparity, also occurs in plants such as the agave or century plant. o Agaves grow in arid climates with unpredictable rainfall and poor soils. o Agaves grow for years, accumulating nutrients in their t ...
... in which a salmon returns to freshwater streams to spawn and then die. o This pattern, known as semelparity, also occurs in plants such as the agave or century plant. o Agaves grow in arid climates with unpredictable rainfall and poor soils. o Agaves grow for years, accumulating nutrients in their t ...
Oligochaeta: Glossoscolecidae
... elevation 100 m (Fig. 2). In total, ,50 specimens were collected, most of which (,30) were from the UFAM experimental farm. Worms were generally not observed during daylight hours except during persistent heavy rains, upon which they surfaced at densities up to ,100 per km2. Under such conditions, t ...
... elevation 100 m (Fig. 2). In total, ,50 specimens were collected, most of which (,30) were from the UFAM experimental farm. Worms were generally not observed during daylight hours except during persistent heavy rains, upon which they surfaced at densities up to ,100 per km2. Under such conditions, t ...
WILDLIFE CORRIDORS
... corridors are also of high conservation significance for fauna, especially in highly altered landscapes. An example of the importance of roadside corridors is illustrated by Figure 4.2 where the road reserve provides the only native habitat within a highly modified landscape. Roadside vegetation and ...
... corridors are also of high conservation significance for fauna, especially in highly altered landscapes. An example of the importance of roadside corridors is illustrated by Figure 4.2 where the road reserve provides the only native habitat within a highly modified landscape. Roadside vegetation and ...
Marcel Rejmánek at 60 – the man and his work
... Marcel’s fascination with tropical forests began while he was still in Czechoslovakia. His long-standing interest in questions of diversity coupled with the “biological exuberance” of tropical plants really captured his interest. His passion for tropical forests became more concrete after he and Eli ...
... Marcel’s fascination with tropical forests began while he was still in Czechoslovakia. His long-standing interest in questions of diversity coupled with the “biological exuberance” of tropical plants really captured his interest. His passion for tropical forests became more concrete after he and Eli ...
Modeling Dynamics of Patchy Landscapes: Linking Metapopulation
... and this discussion is restricted to such models. Although it may take many forms other than the mathematical, much of ecological theory today is expressed in largely mathematical terms because mathematics provides ecologists the most precise language to describe complex phenomena and is also an ide ...
... and this discussion is restricted to such models. Although it may take many forms other than the mathematical, much of ecological theory today is expressed in largely mathematical terms because mathematics provides ecologists the most precise language to describe complex phenomena and is also an ide ...
From Populations to the Biosphere
... Life Science can be studied at many different levels. You can study small things like molecules or cells. Or you can study big things like whole organisms or groups of organisms. The largest level that you can study is the level of ecology. Ecology is the study of how living organisms interact with e ...
... Life Science can be studied at many different levels. You can study small things like molecules or cells. Or you can study big things like whole organisms or groups of organisms. The largest level that you can study is the level of ecology. Ecology is the study of how living organisms interact with e ...
Lecture 22: Coevolution
... Diff’n b/w mean & optimum genotype L ↑ : rate of evolution ↑ Why? selection coefficient ↑ L ↑ : probability of extinction ↑ Why? falling behind in the “arms race” ...
... Diff’n b/w mean & optimum genotype L ↑ : rate of evolution ↑ Why? selection coefficient ↑ L ↑ : probability of extinction ↑ Why? falling behind in the “arms race” ...
Thermal sensitivity of the freshwater crayfish, Euastacus spinifer
... wide variety of habitats. Throughout its distribution, A. australis exhibits a wide range of variation in terms of habit, leaf shape and size of reproductive and vegetative parts. The lack of consensus concerning past recognition of separate taxa within A. australis, makes this an ideal model on whi ...
... wide variety of habitats. Throughout its distribution, A. australis exhibits a wide range of variation in terms of habit, leaf shape and size of reproductive and vegetative parts. The lack of consensus concerning past recognition of separate taxa within A. australis, makes this an ideal model on whi ...
Full-Text PDF
... metapopulation. It is in essence a “population of populations” [12], in the same way that a population in the usual sense is an aggregation of individual organisms of a single species in one location. Because the different populations within the larger aggregation of populations are geographically d ...
... metapopulation. It is in essence a “population of populations” [12], in the same way that a population in the usual sense is an aggregation of individual organisms of a single species in one location. Because the different populations within the larger aggregation of populations are geographically d ...
adaptive radiation driven by the interplay of eco
... Tanganyika (Sturmbauer 1998; Schwarzer et al. 2012). Several authors suggested that the species pump may also contribute to explain the diversity of vertebrate species, in particular among birds, in Amazonian forests (Haffer 1969; Terborgh 1992; Haffer 1997; Hill and Hill 2001; Sedano and Burns 2010 ...
... Tanganyika (Sturmbauer 1998; Schwarzer et al. 2012). Several authors suggested that the species pump may also contribute to explain the diversity of vertebrate species, in particular among birds, in Amazonian forests (Haffer 1969; Terborgh 1992; Haffer 1997; Hill and Hill 2001; Sedano and Burns 2010 ...
Population dynamics of large and small mammals
... assumption is that these social processes are not important for populations of large herbivores. Small mammal population dynamics The conjecture of Caughley and Krebs (1983) that small herbivorous mammals show intrinsic control was challenged by an array of Scandinavian researchers who, in general, ...
... assumption is that these social processes are not important for populations of large herbivores. Small mammal population dynamics The conjecture of Caughley and Krebs (1983) that small herbivorous mammals show intrinsic control was challenged by an array of Scandinavian researchers who, in general, ...
About AquaMaps: Creating standardized range maps of marine
... The AquaMaps solution: incorporation of non-point data about habitat usage The AquaMaps approach was developed specifically to deal with the problems encountered when attempting to map large-scale species distributions based on existing but fragmented and potentially non-representative occurrence da ...
... The AquaMaps solution: incorporation of non-point data about habitat usage The AquaMaps approach was developed specifically to deal with the problems encountered when attempting to map large-scale species distributions based on existing but fragmented and potentially non-representative occurrence da ...
Next generation sequencing
... In deep sequencing, the number of reads mapping to different genes is taken as a measure of expression. The reads are searched against either the predetermined genome sequence or a predetermined set of cDNA sequences to assign them to different transcription units. Because of the very large number o ...
... In deep sequencing, the number of reads mapping to different genes is taken as a measure of expression. The reads are searched against either the predetermined genome sequence or a predetermined set of cDNA sequences to assign them to different transcription units. Because of the very large number o ...
Species–area curves and the geometry of nature
... Indeed, modern gradient analysis can be viewed as an act of dimension reduction (Gauch, 1982; Lepš & Šmilauer, 2003). Although the potential number of gradients is practically limitless, there tend to be relatively few important factors determining species composition (Gauch, 1982; Whittaker, 1975 ...
... Indeed, modern gradient analysis can be viewed as an act of dimension reduction (Gauch, 1982; Lepš & Šmilauer, 2003). Although the potential number of gradients is practically limitless, there tend to be relatively few important factors determining species composition (Gauch, 1982; Whittaker, 1975 ...
Prediction of bird community composition based on point
... Predictive accuracy is then evaluated based on 1250 points resampled from the test data and 1250 points sampled randomly from the study region as a whole to provide pseudoabsences (note that these subsamples and tests are internal to GARP, and are not available to the user for model validation, maki ...
... Predictive accuracy is then evaluated based on 1250 points resampled from the test data and 1250 points sampled randomly from the study region as a whole to provide pseudoabsences (note that these subsamples and tests are internal to GARP, and are not available to the user for model validation, maki ...
(1999) Consequences of the Allee effect for behaviour, ecology and
... or to minimum group size; below this, growth is negative and the population or group is likely to become extinct. The marked differences between logistic growth and growth subject to Allee effects could have a profound influence on the population ecology of many species. The genetic consequences of ...
... or to minimum group size; below this, growth is negative and the population or group is likely to become extinct. The marked differences between logistic growth and growth subject to Allee effects could have a profound influence on the population ecology of many species. The genetic consequences of ...
Ecological and evolutionary implications of food subsidies
... and regulations that have progressively been applied there limit the accessibility of these resources to scavenging organisms, whereas in developing countries, where high human densities are often coupled with less strict environmental policies, dumps are large and numerous. On the other hand, inten ...
... and regulations that have progressively been applied there limit the accessibility of these resources to scavenging organisms, whereas in developing countries, where high human densities are often coupled with less strict environmental policies, dumps are large and numerous. On the other hand, inten ...
Ecological and evolutionary implications of food subsidies from
... and regulations that have progressively been applied there limit the accessibility of these resources to scavenging organisms, whereas in developing countries, where high human densities are often coupled with less strict environmental policies, dumps are large and numerous. On the other hand, inten ...
... and regulations that have progressively been applied there limit the accessibility of these resources to scavenging organisms, whereas in developing countries, where high human densities are often coupled with less strict environmental policies, dumps are large and numerous. On the other hand, inten ...
Cercopagis pengoi in Southwestern Lake Michigan
... invasion of Cercopagis pengoi (fish hook flea), a predatory zooplankton native to the Ponto-Caspian region. This invasion provided an opportunity to examine both the responses of a population following establishment in a new area and the immediate response of the native community. We compared season ...
... invasion of Cercopagis pengoi (fish hook flea), a predatory zooplankton native to the Ponto-Caspian region. This invasion provided an opportunity to examine both the responses of a population following establishment in a new area and the immediate response of the native community. We compared season ...
5-1 How Populations Grow
... Under ideal conditions with unlimited resources, a population will grow exponentially. Exponential growth occurs when the individuals in a population reproduce at a constant rate. The population becomes larger and larger until it approaches an infinitely large size. Slide 5 of 22 Copyright Pearson P ...
... Under ideal conditions with unlimited resources, a population will grow exponentially. Exponential growth occurs when the individuals in a population reproduce at a constant rate. The population becomes larger and larger until it approaches an infinitely large size. Slide 5 of 22 Copyright Pearson P ...
Natural selection
... competitor’s does (i.e., it leaves more offspring) Evolutionarily stable strategy (ESS): the optimal strategy for an individual to follow when the rewards (payoffs) depend ...
... competitor’s does (i.e., it leaves more offspring) Evolutionarily stable strategy (ESS): the optimal strategy for an individual to follow when the rewards (payoffs) depend ...
Successive Losses of Central Immune Genes
... transition following the TLR5 loss event combined with a small increase in extinction rate (Guinot and Cavin 2015). The loss of Mx and the global anoxia event ~120 Ma are associated with a small increase in extinction rate but otherwise overall higher and stable species richness levels compared to t ...
... transition following the TLR5 loss event combined with a small increase in extinction rate (Guinot and Cavin 2015). The loss of Mx and the global anoxia event ~120 Ma are associated with a small increase in extinction rate but otherwise overall higher and stable species richness levels compared to t ...
GREAT CRESTED NEWT - Cheshire Wildlife Trust
... An internationally important species of conservation concern. Since the late 1940's great crested newt (GCN) populations have experienced drastic declines throughout much of Europe, although populations are still found in many parts of the country. Distribution is widespread throughout the Cheshire ...
... An internationally important species of conservation concern. Since the late 1940's great crested newt (GCN) populations have experienced drastic declines throughout much of Europe, although populations are still found in many parts of the country. Distribution is widespread throughout the Cheshire ...