Sander vitreus
... growing conditions and a 10 year old fish can be 40-80 cm in length. Females are larger than males and reach maturity at 3-8 years; males mature a year earlier. Reproduction occurs in spring when water temperatures rise above 5°C after a potentially extensive migration to the spawning location. Spaw ...
... growing conditions and a 10 year old fish can be 40-80 cm in length. Females are larger than males and reach maturity at 3-8 years; males mature a year earlier. Reproduction occurs in spring when water temperatures rise above 5°C after a potentially extensive migration to the spawning location. Spaw ...
Refocusing Ecocentrism: De-emphasizing Stability
... equilibrium and/or stable depends on the features under consideration and the scale at which the system is described. Vernal pools that exist for perhaps a dozen weeks each year and then dry up are ephemeral on a time scale of months but constant if the scale is years. Integrity is also used in a va ...
... equilibrium and/or stable depends on the features under consideration and the scale at which the system is described. Vernal pools that exist for perhaps a dozen weeks each year and then dry up are ephemeral on a time scale of months but constant if the scale is years. Integrity is also used in a va ...
toward a metabolic theory of ecology
... so they must expend metabolic energy to maintain concentration gradients across their surfaces, to acquire necessary elements, and to excrete waste products. Fundamental stoichiometric relationships dictate the quantities of elements that are transformed in the reactions of metabolism. Biochemistry ...
... so they must expend metabolic energy to maintain concentration gradients across their surfaces, to acquire necessary elements, and to excrete waste products. Fundamental stoichiometric relationships dictate the quantities of elements that are transformed in the reactions of metabolism. Biochemistry ...
The effects of landscape fragmentation on
... complex and may influence each pollination component in contrasting ways. The interdependency between plants and animals inherent to pollination systems also has the possibility to drive cumulative effects of fragmentation, initiating negative feedback loops between animals and the plants they polli ...
... complex and may influence each pollination component in contrasting ways. The interdependency between plants and animals inherent to pollination systems also has the possibility to drive cumulative effects of fragmentation, initiating negative feedback loops between animals and the plants they polli ...
Wytham publications - Bodleian Libraries
... Farm at Wytham. Ann.Rep.Ashmol.Mus. 1977-8, Pl.3, p.22. ASKEW,R.R. (1958). Harpiphorus lepidus Klug (Hym., Tenthredinidae) in Berkshire. Ent.Mon.Mag. 94:203. ASKEW,R.R. (1959). A revision of the British species of the genus Olynx Forster (Hym., Eulophidae). Ent.Mon.Mag. 95:49-57. ASKEW,R.R. (1959). ...
... Farm at Wytham. Ann.Rep.Ashmol.Mus. 1977-8, Pl.3, p.22. ASKEW,R.R. (1958). Harpiphorus lepidus Klug (Hym., Tenthredinidae) in Berkshire. Ent.Mon.Mag. 94:203. ASKEW,R.R. (1959). A revision of the British species of the genus Olynx Forster (Hym., Eulophidae). Ent.Mon.Mag. 95:49-57. ASKEW,R.R. (1959). ...
Review on hard coral recruitment (Cnidaria: Scleractinia) in Colombia
... process for ecologists, evolutionists and conservationists due to its direct effect on population structure and function. Because most coral populations are self-feeding, a breakdown in recruitment would lead to local extinction. Recruitment indirectly affects both renewal and maintenance of existin ...
... process for ecologists, evolutionists and conservationists due to its direct effect on population structure and function. Because most coral populations are self-feeding, a breakdown in recruitment would lead to local extinction. Recruitment indirectly affects both renewal and maintenance of existin ...
Sub-regional Species Strategy for the Southern Brown Bandicoot
... such habitat to be avoided and protected from development, and may also seek to protect dispersal corridors that connect potential habitat if this forms part of a link to breeding habitat. The Commonwealth Government would not approve developments with unacceptable impacts and no compensation is pay ...
... such habitat to be avoided and protected from development, and may also seek to protect dispersal corridors that connect potential habitat if this forms part of a link to breeding habitat. The Commonwealth Government would not approve developments with unacceptable impacts and no compensation is pay ...
Habitat Selection and Population Regulation in
... This line is called an isodar and specifies the combinations of Ni and Nj that give equal fitness in both habitats (Morris 1988). Hence, the isodar specifies the evolutionary attractor and the evolutionarily stable strategy (ESS) for the spatial distribution of individuals. Depending on the relative ...
... This line is called an isodar and specifies the combinations of Ni and Nj that give equal fitness in both habitats (Morris 1988). Hence, the isodar specifies the evolutionary attractor and the evolutionarily stable strategy (ESS) for the spatial distribution of individuals. Depending on the relative ...
do similar communities develop in similar sites? a test
... Scale was important in detecting structure and function differences among zooplankton communities. Species- and taxa-level analyses showed clear differences among communities, but community-level analyses of structure (species richness, total density and biomass) and function (productivity, respirat ...
... Scale was important in detecting structure and function differences among zooplankton communities. Species- and taxa-level analyses showed clear differences among communities, but community-level analyses of structure (species richness, total density and biomass) and function (productivity, respirat ...
What makes a species common? No evidence of density
... 1989; Levitan 1989), or if trade-offs between positive and negative density-dependent processes [e.g., resource and sperm limitation (Levitan 1991; Wahle and Peckham 1999)] are balanced. Traits such as body size plasticity and trade-offs between fertilization and fecundity which allow individuals to ...
... 1989; Levitan 1989), or if trade-offs between positive and negative density-dependent processes [e.g., resource and sperm limitation (Levitan 1991; Wahle and Peckham 1999)] are balanced. Traits such as body size plasticity and trade-offs between fertilization and fecundity which allow individuals to ...
recruitment and the local dynamics of open marine
... in local population dynamics only for highly mobile species; they can safely be ignored for most sessile species. However, localized dispersal of benthic stages does occur among marine invertebrates that are capable of detachment or that undergo fragmentation (76), and also among some nonterritorial ...
... in local population dynamics only for highly mobile species; they can safely be ignored for most sessile species. However, localized dispersal of benthic stages does occur among marine invertebrates that are capable of detachment or that undergo fragmentation (76), and also among some nonterritorial ...
Pygmy Short-horned Lizard - Publications du gouvernement du
... that must swallow them whole. Some horned lizards are capable of shooting a stream of foul-tasting blood into the mouths of certain predators, but this behaviour has not been observed in Pygmy Short-horned Lizards. Population sizes and trends The Pygmy Short-horned Lizard is considered to be extirpa ...
... that must swallow them whole. Some horned lizards are capable of shooting a stream of foul-tasting blood into the mouths of certain predators, but this behaviour has not been observed in Pygmy Short-horned Lizards. Population sizes and trends The Pygmy Short-horned Lizard is considered to be extirpa ...
Document
... Multiple Sequence Alignment tools are used to compare the amino acid sequences of more than two proteins. The word-size is the length of the seed set of amino acids, which needs to match exactly to get extended in both directions. Window Length is the length of the residues on either side, till whic ...
... Multiple Sequence Alignment tools are used to compare the amino acid sequences of more than two proteins. The word-size is the length of the seed set of amino acids, which needs to match exactly to get extended in both directions. Window Length is the length of the residues on either side, till whic ...
THE IMPLICATIONS OF INTRAGUILD PREDATION FOR THE ROLE
... were investigated in the absence of aphid prey. Various combinations of predators at different developmental stages (egg-adult) yielded 37 different test combinations. Symmetric IGP occurred between lacewings and lady beetles; that is, larger developmental stages of one predator fed on smaller devel ...
... were investigated in the absence of aphid prey. Various combinations of predators at different developmental stages (egg-adult) yielded 37 different test combinations. Symmetric IGP occurred between lacewings and lady beetles; that is, larger developmental stages of one predator fed on smaller devel ...
ecology of phasmids (phasmatodea) in a moist neotropical forest
... Table 2-2: Niche breadth and niche overlap of phasmid species on BCI................................................20 Table 2-3: Dimensions of the food niche of four phasmids on BCI........................................................22 Table 2-4: Densities of phasmids, insects, and arthropods i ...
... Table 2-2: Niche breadth and niche overlap of phasmid species on BCI................................................20 Table 2-3: Dimensions of the food niche of four phasmids on BCI........................................................22 Table 2-4: Densities of phasmids, insects, and arthropods i ...
Non-detriment finding for Equus zebra zebra (Cape mountain zebra)
... females (range 1 - 5) and their offspring, which remain stable for many years (Penzhorn & Novellie 1991). Adult females in a herd are unrelated. Female social rank appears to affect the reproductive sex allocation with dominant females producing significantly more female offspring. The reproductive ...
... females (range 1 - 5) and their offspring, which remain stable for many years (Penzhorn & Novellie 1991). Adult females in a herd are unrelated. Female social rank appears to affect the reproductive sex allocation with dominant females producing significantly more female offspring. The reproductive ...
Bounceback 20 year report - Natural Resources South Australia
... local extinctions and continues to influence the abundance of native species in South Australia’s semiarid ranges. Introduced herbivores, like goats and rabbits, have established wild populations in the ranges and compete with native animals for resources. Unnaturally high numbers of native grazers ...
... local extinctions and continues to influence the abundance of native species in South Australia’s semiarid ranges. Introduced herbivores, like goats and rabbits, have established wild populations in the ranges and compete with native animals for resources. Unnaturally high numbers of native grazers ...
04
... His research showed that E. rosea prefers snails over slugs and prefers smaller sized snails over larger snails. E. rosea often consume the entire snail, including the shell, which may satisfy E. rosea’s calcium requirements. A summary of Mr. Meyer’s first year of research is included as Appendix X. ...
... His research showed that E. rosea prefers snails over slugs and prefers smaller sized snails over larger snails. E. rosea often consume the entire snail, including the shell, which may satisfy E. rosea’s calcium requirements. A summary of Mr. Meyer’s first year of research is included as Appendix X. ...
Key Role of European Rabbits in the Conservation of the Western
... and urbanization (e.g., Symeonakis et al. 2007). Nevertheless, an additional risk could be the decline of the European rabbit, which is endemic to the Iberian Peninsula (Monnerot et al. 1994). From the late Pleistocene until Classical antiquity, European rabbits were present only on the Iberian Peni ...
... and urbanization (e.g., Symeonakis et al. 2007). Nevertheless, an additional risk could be the decline of the European rabbit, which is endemic to the Iberian Peninsula (Monnerot et al. 1994). From the late Pleistocene until Classical antiquity, European rabbits were present only on the Iberian Peni ...
Models of a four-species annual weed community : growth
... models built from theory that explain how systems ought to work. My approach is explanatory; therefore, I look for ecological theory that provides a framework to predict community dynamics in agricultural systems. Weed associations are a special type of plant community. Once key life-history process ...
... models built from theory that explain how systems ought to work. My approach is explanatory; therefore, I look for ecological theory that provides a framework to predict community dynamics in agricultural systems. Weed associations are a special type of plant community. Once key life-history process ...
Five-lined Skink (Plestiodon fasciatus)
... The Five-lined Skink (Plestiodon fasciatus) is the only lizard native to the province of Ontario. Juveniles and some adults can be readily identified by five cream-coloured stripes that extend down the length of their green-black bodies. This species becomes more uniformly bronze with age, though ha ...
... The Five-lined Skink (Plestiodon fasciatus) is the only lizard native to the province of Ontario. Juveniles and some adults can be readily identified by five cream-coloured stripes that extend down the length of their green-black bodies. This species becomes more uniformly bronze with age, though ha ...
population
... Density: A Dynamic Perspective • In most cases, it is impractical or impossible to count all individuals in a population • Sampling techniques can be used to estimate densities and total population sizes ...
... Density: A Dynamic Perspective • In most cases, it is impractical or impossible to count all individuals in a population • Sampling techniques can be used to estimate densities and total population sizes ...
Trait similarity patterns within grass and grasshopper
... of different taxonomic or trophic groups, even in the same environment (Fig. 1B). For example, low soil pH may filter out some plant species that cannot tolerate soil acidity, while not directly acting upon herbivore community assembly. On the other hand, certain disturbances, such as traffic noise, c ...
... of different taxonomic or trophic groups, even in the same environment (Fig. 1B). For example, low soil pH may filter out some plant species that cannot tolerate soil acidity, while not directly acting upon herbivore community assembly. On the other hand, certain disturbances, such as traffic noise, c ...