assessment
... Citation: Burnett, S. & Ellis, M. 2016. Thylogale stigmatica. The IUCN Red List of Threatened Species 2016: e.T40574A21958270. http://dx.doi.org/10.2305/IUCN.UK.2016-2.RLTS.T40574A21958270.en Copyright: © 2016 International Union for Conservation of Nature and Natural Resources Reproduction of this ...
... Citation: Burnett, S. & Ellis, M. 2016. Thylogale stigmatica. The IUCN Red List of Threatened Species 2016: e.T40574A21958270. http://dx.doi.org/10.2305/IUCN.UK.2016-2.RLTS.T40574A21958270.en Copyright: © 2016 International Union for Conservation of Nature and Natural Resources Reproduction of this ...
On the stabilizing effect of predators and competitors on ecological
... authors showed by computer simulation that in a two-prey, one-predator model of Lotka-Volterra type, the absence of the predator may shorten the time of coexistence of the two-prey species. A local stability analysis of the two-prey, one-predator equilibrium was performed by Cramer and May (1972) an ...
... authors showed by computer simulation that in a two-prey, one-predator model of Lotka-Volterra type, the absence of the predator may shorten the time of coexistence of the two-prey species. A local stability analysis of the two-prey, one-predator equilibrium was performed by Cramer and May (1972) an ...
invasive non-native species
... nineteenth century. It is now a major problem, reducing biodiversity by shading native plants and damaging hard structures such as tarmac, paved areas and flood defence structures. It can regenerate from less than a gram of root tissue, grow four metres tall in four months and has a large undergroun ...
... nineteenth century. It is now a major problem, reducing biodiversity by shading native plants and damaging hard structures such as tarmac, paved areas and flood defence structures. It can regenerate from less than a gram of root tissue, grow four metres tall in four months and has a large undergroun ...
Managing Uplands with Keystone Species
... Native species are always preferred but tortoises will do just fine with a number of non-native species A study by Ashton and Ashton study found that gopher tortoises will eat 370 plant species from 22 different families. ...
... Native species are always preferred but tortoises will do just fine with a number of non-native species A study by Ashton and Ashton study found that gopher tortoises will eat 370 plant species from 22 different families. ...
Implications of changing species definitions for
... This is partly because any shift to a PSC and a sudden surge in new species has implications for broader society beyond just conservation. Although the legal implications of changing species definitions may be surprisingly small (see below), each time the name of a species changes, or species bounda ...
... This is partly because any shift to a PSC and a sudden surge in new species has implications for broader society beyond just conservation. Although the legal implications of changing species definitions may be surprisingly small (see below), each time the name of a species changes, or species bounda ...
global status of oceanic pelagic sharks and rays
... on large species that are affected by high seas or open ocean fisheries. Many of these species reproduce relatively late (between 2–21 years) and have long life spans (between 8–65 years), with long ...
... on large species that are affected by high seas or open ocean fisheries. Many of these species reproduce relatively late (between 2–21 years) and have long life spans (between 8–65 years), with long ...
Anthony R. Ives: Theoretical and Empirical Community Ecology
... same system with repeated pulse perturbations.(D)Press perturbations to systems with a stable equilibrium. The arrows trace the equilibrium densities of species i and j in a six-species ecosystem as the intrinsic rates of increase decline for all species. In the left panel, the equilibrium point col ...
... same system with repeated pulse perturbations.(D)Press perturbations to systems with a stable equilibrium. The arrows trace the equilibrium densities of species i and j in a six-species ecosystem as the intrinsic rates of increase decline for all species. In the left panel, the equilibrium point col ...
Grasshopper Habitats
... is that if low-growing plants are present, grasshoppers can be found feeding on them. We are aware of only two habitat types where it is difficult to find grasshoppers. The first is mature, dense forest, especially pine plantations and tropical hardwood forests. In such habitat virtually no light re ...
... is that if low-growing plants are present, grasshoppers can be found feeding on them. We are aware of only two habitat types where it is difficult to find grasshoppers. The first is mature, dense forest, especially pine plantations and tropical hardwood forests. In such habitat virtually no light re ...
Probeseiten 1 PDF
... a 100 other animals and plants blinked into nothingness, unhymned by the world media, blithely unnoticed by the vast majority of Homo sapiens, the species that has now come to dominate all others and to occupy the lion’s share of the planet’s resources. Like death, extinction—let it be said—is a par ...
... a 100 other animals and plants blinked into nothingness, unhymned by the world media, blithely unnoticed by the vast majority of Homo sapiens, the species that has now come to dominate all others and to occupy the lion’s share of the planet’s resources. Like death, extinction—let it be said—is a par ...
An Analysis for Revision of the Nevada Wildlife Action Plan.
... actually decreased based on CCVI, habitat analysis and other factors although new species were added in all categories. • SOCP total was similar (256 v 264) due to inclusion of additional gastropods and other aquatics ...
... actually decreased based on CCVI, habitat analysis and other factors although new species were added in all categories. • SOCP total was similar (256 v 264) due to inclusion of additional gastropods and other aquatics ...
Lab 5 - Testing a Competition Model with Wasps
... The structure of a community will be determined in part by the dynamics of the interactions between the species in the community. Interactions between two species can be direct or indirect (i.e., mediated through other species). In even a simple natural community, hundreds of different species of pl ...
... The structure of a community will be determined in part by the dynamics of the interactions between the species in the community. Interactions between two species can be direct or indirect (i.e., mediated through other species). In even a simple natural community, hundreds of different species of pl ...
4. Consequences of climate change
... surrounded by sea or by a different terrestrial habitat, with no alternative locations for species to move to. Human activities have greatly increased this risk through reduction and fragmentation of habitats to create ecological islands surrounded by human-dominated landscapes such as agriculture o ...
... surrounded by sea or by a different terrestrial habitat, with no alternative locations for species to move to. Human activities have greatly increased this risk through reduction and fragmentation of habitats to create ecological islands surrounded by human-dominated landscapes such as agriculture o ...
Chapter 9
... a. Many people have a preference for natural scenes over urban environments. b. Some believe that certain organisms have more of a right to life than others. 2. Biophobia: Fear of certain forms of wildlife. SCIENCE FOCUS: There are about 950 species of bats. They reproduce slowly and live in large c ...
... a. Many people have a preference for natural scenes over urban environments. b. Some believe that certain organisms have more of a right to life than others. 2. Biophobia: Fear of certain forms of wildlife. SCIENCE FOCUS: There are about 950 species of bats. They reproduce slowly and live in large c ...
A Stochastic Multi-Species model, SMS
... – Open source, freely available from http://admbfoundation.org • North Sea configuration ~ 1000 parameters – ~ 50 “multi species” parameters • Baltic Sea configuration ~ 350 parameters – ~10 “multi species” parameters • Running time (Baltic Sea example), including variance estimate, less than 5 minu ...
... – Open source, freely available from http://admbfoundation.org • North Sea configuration ~ 1000 parameters – ~ 50 “multi species” parameters • Baltic Sea configuration ~ 350 parameters – ~10 “multi species” parameters • Running time (Baltic Sea example), including variance estimate, less than 5 minu ...
Natural enemies
... – Sieve elements conducts the products of photosynthesis - sugars and amino acids - from the place where they are manufactured (a "source"), e.g., leaves, to the places ("sinks") where they are consumed or stored; – Companion cells move sugars and amino acids into and out of the sieve elements. ...
... – Sieve elements conducts the products of photosynthesis - sugars and amino acids - from the place where they are manufactured (a "source"), e.g., leaves, to the places ("sinks") where they are consumed or stored; – Companion cells move sugars and amino acids into and out of the sieve elements. ...
New Zealand Journal of Botany Comparative ecology of bird
... and views expressed in this publication are the opinions and views of the authors, and are not the views of or endorsed by Taylor & Francis. The accuracy of the Content should not be relied upon and should be independently verified with primary sources of information. Taylor and Francis shall not be ...
... and views expressed in this publication are the opinions and views of the authors, and are not the views of or endorsed by Taylor & Francis. The accuracy of the Content should not be relied upon and should be independently verified with primary sources of information. Taylor and Francis shall not be ...
CHAPTER 8: POPULATION ECOLOGY Outline 8
... 2. Sexual reproduction occurs when gametes from each parent combine to produce offspring with a combination of genetic traits from each parent. 3. There are three disadvantages to sexual reproduction: a. Males do not give birth, females have to produce twice the offspring to maintain the same number ...
... 2. Sexual reproduction occurs when gametes from each parent combine to produce offspring with a combination of genetic traits from each parent. 3. There are three disadvantages to sexual reproduction: a. Males do not give birth, females have to produce twice the offspring to maintain the same number ...
xxxxx
... Wood Storks (Mycteria americana) are the only species of stork to be found in North America. They measure 40-44 inches long, with a wingspan of 5 feet. It's bones are hollow and extremely light, with the feathers actually weighing more. It feeds mainly on fish, and forages in shallow water with it's ...
... Wood Storks (Mycteria americana) are the only species of stork to be found in North America. They measure 40-44 inches long, with a wingspan of 5 feet. It's bones are hollow and extremely light, with the feathers actually weighing more. It feeds mainly on fish, and forages in shallow water with it's ...
2.4.2 Zonation and Succession
... an environmental gradient due to factors such as changes in altitude, latitude, tidal level or distance from shore/coverage by water. ...
... an environmental gradient due to factors such as changes in altitude, latitude, tidal level or distance from shore/coverage by water. ...
why plant native trees?
... Current research being undertaken at Scion evaluating the growth and wood quality of selected native trees indicates that the timber from fast-growing planted trees can be as attractive as, and has many of the wood characteristics of, timber from old-growth indigenous forest or locally grown and imp ...
... Current research being undertaken at Scion evaluating the growth and wood quality of selected native trees indicates that the timber from fast-growing planted trees can be as attractive as, and has many of the wood characteristics of, timber from old-growth indigenous forest or locally grown and imp ...
Methods of Monitoring Pollution
... of sewage dumping in the ecosystem Overall diversity of the system is the best indicator presence is better than absence ...
... of sewage dumping in the ecosystem Overall diversity of the system is the best indicator presence is better than absence ...
File
... Define and describe the process of evolution Explain how natural selection, speciation, and tolerance limits have influenced biodiversity Describe the dynamics in which species live and interact with one another Define and describe the importance of Keystone Species Explain how primary pro ...
... Define and describe the process of evolution Explain how natural selection, speciation, and tolerance limits have influenced biodiversity Describe the dynamics in which species live and interact with one another Define and describe the importance of Keystone Species Explain how primary pro ...
vegetation and the regeneration of moist deciduous forests
... both forest patches, the seedling bank was dominated by climax shrub species and there was no significant difference between the number of climax shrub species in both forests (t test: p = 0.24). Seedlings of pioneer tree and shrub species were not very common in the seedling bank. The amount of sun ...
... both forest patches, the seedling bank was dominated by climax shrub species and there was no significant difference between the number of climax shrub species in both forests (t test: p = 0.24). Seedlings of pioneer tree and shrub species were not very common in the seedling bank. The amount of sun ...
Knapweed in the Web
... an herbivore that only attacks the target weed. Screening biocontrol agents for host specificity prior to introduction is extremely important. There have been a few cases in which biocontrol agents, many years after introduction, have switched host plants and fed on native plants that were closely r ...
... an herbivore that only attacks the target weed. Screening biocontrol agents for host specificity prior to introduction is extremely important. There have been a few cases in which biocontrol agents, many years after introduction, have switched host plants and fed on native plants that were closely r ...
Bifrenaria
Bifrenaria, abbreviated Bif. in horticultural trade, is a genus of plant in family Orchidaceae. It contains 20 species found in Panama, Trinidad and South America. There are no known uses for them, but their abundant, and at first glance artificial, flowers, make them favorites of orchid growers.The genus can be split in two clearly distinct groups: one of highly robust plants with large flowers, that encompass the first species to be classified under the genus Bifrenaria; other of more delicate plants with smaller flowers occasionally classified as Stenocoryne or Adipe. There are two additional species that are normally classified as Bifrenaria, but which molecular analysis indicate to belong to different orchid groups entirely. One is Bifrenaria grandis which is endemic to Bolívia and which is now placed in Lacaena, and Bifrenaria steyermarkii, an inhabitant of the northern Amazon Forest, which does not have an alternative classification.