92KB - NZQA
... exposure and the northern skink populations were able to expand into new available niches. By now speciation had occurred and different northern skink species now exist sympatrically, but reproductively isolated in similar niches. O. smithi has greater distribution, so there is a lot of gene flow be ...
... exposure and the northern skink populations were able to expand into new available niches. By now speciation had occurred and different northern skink species now exist sympatrically, but reproductively isolated in similar niches. O. smithi has greater distribution, so there is a lot of gene flow be ...
Chapter 8
... Constant loss population die at all ages. Most members of early loss population, die at ...
... Constant loss population die at all ages. Most members of early loss population, die at ...
What about nonadaptive radiation
... in various directions. In principle such species can live in the same places. The large numbers of sympatric cichlid species in certain African lakes are among the most illustrative examples of adaptive radiation (Fryer & Iles, 1972). As another consequence of the preceding way of reasoning, non-ada ...
... in various directions. In principle such species can live in the same places. The large numbers of sympatric cichlid species in certain African lakes are among the most illustrative examples of adaptive radiation (Fryer & Iles, 1972). As another consequence of the preceding way of reasoning, non-ada ...
Appendix S1 Justification for studying lineage compositions of
... of environments as different regions. For instance, our study system, The Netherlands, may seem a small region with almost absent climatic gradients across its whole area, and therefore with very narrow representation of environmental gradients. Nevertheless, in reality this region represents surpri ...
... of environments as different regions. For instance, our study system, The Netherlands, may seem a small region with almost absent climatic gradients across its whole area, and therefore with very narrow representation of environmental gradients. Nevertheless, in reality this region represents surpri ...
No Slide Title
... Evolutionary biology, in contrast with physics and chemistry, is a historical science -- the evolutionist attempts to explain events and processes that have already taken place. Laws and experiments are inappropriate techniques for the explication of such events and processes. Instead one constructs ...
... Evolutionary biology, in contrast with physics and chemistry, is a historical science -- the evolutionist attempts to explain events and processes that have already taken place. Laws and experiments are inappropriate techniques for the explication of such events and processes. Instead one constructs ...
Chapter 6 – Population and Community Ecology
... 20. Define symbiotic relationships. List the three population interactions that are examples of symbiotic relationships. Use the blank table below to indicate the effects on both partners in the four relationships listed: ...
... 20. Define symbiotic relationships. List the three population interactions that are examples of symbiotic relationships. Use the blank table below to indicate the effects on both partners in the four relationships listed: ...
Is Facilitation a True Species Interaction?
... [+, 0] and amensalism [-, 0], individuals of one species are unaffected by the interaction. In such a relationship, can the unaffected individual really be considered as interacting with the “+” or “-” organism? In other words, are facilitation, commensalism and amensalism true species interactions? ...
... [+, 0] and amensalism [-, 0], individuals of one species are unaffected by the interaction. In such a relationship, can the unaffected individual really be considered as interacting with the “+” or “-” organism? In other words, are facilitation, commensalism and amensalism true species interactions? ...
Conservation Impact Report 2016
... continuation of this is essential for the survival of the community. Hay meadows are particularly susceptible to changes in hydrology, such as summer flooding, which can prevent traditional management. Hay meadow management usually consists of an annual hay cut in mid-July, followed by aftermath gra ...
... continuation of this is essential for the survival of the community. Hay meadows are particularly susceptible to changes in hydrology, such as summer flooding, which can prevent traditional management. Hay meadow management usually consists of an annual hay cut in mid-July, followed by aftermath gra ...
Medicinal and aromatic plants improve livelihoods in Yemen
... henna, 83% for nigella and 120% for cumin. Yields of the target species increased too, more than trebling for cumin. Farmers grew these species for their own use and to market, and the income derived from market sales increased for coriander (+40%), nigella (+54%) and cumin (+80%). Income from henna ...
... henna, 83% for nigella and 120% for cumin. Yields of the target species increased too, more than trebling for cumin. Farmers grew these species for their own use and to market, and the income derived from market sales increased for coriander (+40%), nigella (+54%) and cumin (+80%). Income from henna ...
Document
... In contrast, hundreds of thousands of species (in small populations) can be found in the rainforests of Central and South America. The reason that Canada supports large populations, with less diversity is the extreme environment and seasonal variations, which restrict their food supply. Organisms li ...
... In contrast, hundreds of thousands of species (in small populations) can be found in the rainforests of Central and South America. The reason that Canada supports large populations, with less diversity is the extreme environment and seasonal variations, which restrict their food supply. Organisms li ...
1.1_Populations_and_ecosystems
... place at the same time. • The word is often used to refer to organisms of a particular kind, such as the plant community on a lawn. ...
... place at the same time. • The word is often used to refer to organisms of a particular kind, such as the plant community on a lawn. ...
Grand Junction Field Office
... -Determine the effects of cowbird parasitism on Black-chinned Hummingbirds, Gray Flycatchers, Gray Vireos, Juniper Titmice, and Black-throated Gray Warblers. -Determine conditions that lead to excessive parasitism and predation failure in nesting of piñon-juniper birds: vireos, including Gray and Pl ...
... -Determine the effects of cowbird parasitism on Black-chinned Hummingbirds, Gray Flycatchers, Gray Vireos, Juniper Titmice, and Black-throated Gray Warblers. -Determine conditions that lead to excessive parasitism and predation failure in nesting of piñon-juniper birds: vireos, including Gray and Pl ...
The Big Kill - impossible2Possible
... that were adapted to eat coarse grasses. It is believed that their long tusks (up to 5 m or 16 ft long) were curved to act as shovels to clear snow from the ground to reach grasses buried beneath (see mammoth) . The woolly mammoth became extinct about 10,000 years ago. It is believed their disappear ...
... that were adapted to eat coarse grasses. It is believed that their long tusks (up to 5 m or 16 ft long) were curved to act as shovels to clear snow from the ground to reach grasses buried beneath (see mammoth) . The woolly mammoth became extinct about 10,000 years ago. It is believed their disappear ...
Lecture_9_Jan 22_2015_Coccidia
... Eimeria species demonstrate both site and host specificity, but to somewhat different degrees. The majority of species undergo development within certain cells of the gastrointestinal tract, but not all species are found in this location. Other species have been found to develop in cells of the gall ...
... Eimeria species demonstrate both site and host specificity, but to somewhat different degrees. The majority of species undergo development within certain cells of the gastrointestinal tract, but not all species are found in this location. Other species have been found to develop in cells of the gall ...
Protozoa Apicomplexa SarcomastigophoraCiliophora
... Eimeria species demonstrate both site and host specificity, but to somewhat different degrees. The majority of species undergo development within certain cells of the gastrointestinal tract, but not all species are found in this location. Other species have been found to develop in cells of the gall ...
... Eimeria species demonstrate both site and host specificity, but to somewhat different degrees. The majority of species undergo development within certain cells of the gastrointestinal tract, but not all species are found in this location. Other species have been found to develop in cells of the gall ...
Chapter 8 - Bergen.org
... – An area that is biologically isolated so that a species occurring within the area rarely mixes with any other population of the same species Botkin and Keller Environmental Science 5e ...
... – An area that is biologically isolated so that a species occurring within the area rarely mixes with any other population of the same species Botkin and Keller Environmental Science 5e ...
Introduction of fish to fresh waters within a river catchment outside
... • Oxleyan pygmy perch (endangered); • Southern pygmy perch (vulnerable); • Macquarie perch (vulnerable); • Silver perch (vulnerable); • Western population of the purple spotted gudgeon (endangered population); and • Western population of the olive perchlet (endangered population). ...
... • Oxleyan pygmy perch (endangered); • Southern pygmy perch (vulnerable); • Macquarie perch (vulnerable); • Silver perch (vulnerable); • Western population of the purple spotted gudgeon (endangered population); and • Western population of the olive perchlet (endangered population). ...
Woodland Ecosystems - Ministry of Environment
... dependent on these neighbouring ecosystems. Hawks, for example, like to perch or nest in tall trees within the forest and then hunt in the more open woodlands. People enjoy looking at and visiting woodland areas. Some woodlands, especially Garry oak ecosystems that occur on deep soils, display a stu ...
... dependent on these neighbouring ecosystems. Hawks, for example, like to perch or nest in tall trees within the forest and then hunt in the more open woodlands. People enjoy looking at and visiting woodland areas. Some woodlands, especially Garry oak ecosystems that occur on deep soils, display a stu ...
Biology III, Summer 2009
... There are several possible results of interspecific competition. One result is that both species can persist, but each with their stable population sizes depressed by competition with the other. This is most likely to occur when the resources being competed for are only a portion of the resources ea ...
... There are several possible results of interspecific competition. One result is that both species can persist, but each with their stable population sizes depressed by competition with the other. This is most likely to occur when the resources being competed for are only a portion of the resources ea ...
Potential Fishery Impacts to Alaska from a Marine Invasive Species: the Colonial Tunicate Didemnum vexillum
... likely to cause economic or environmental harm or harm to human health. ...
... likely to cause economic or environmental harm or harm to human health. ...
Importance, threats, status and conservation challenges of
... rainfall areas and has the greatest summer aridity. This is the land of many spring flowers, which for a few weeks each year, draw large numbers of tourists from all over the world. Succulent plant species with thick, fleshy leaves are plentiful here, the diversity of which is unparalleled anywhere ...
... rainfall areas and has the greatest summer aridity. This is the land of many spring flowers, which for a few weeks each year, draw large numbers of tourists from all over the world. Succulent plant species with thick, fleshy leaves are plentiful here, the diversity of which is unparalleled anywhere ...
A Multidisciplinary Approach to the Analysis of Multifactorial Land
... of dispersal to islands (see Palombo 2009a and the references therein). We contend that this is an oversimplification. Insular ter restrial mammal communities, either living or fossil, can be found to be unbalanced for many more reasons than a sweepstake invasion by new species. For example, fauna ...
... of dispersal to islands (see Palombo 2009a and the references therein). We contend that this is an oversimplification. Insular ter restrial mammal communities, either living or fossil, can be found to be unbalanced for many more reasons than a sweepstake invasion by new species. For example, fauna ...
Population Dynamics - Amazing World of Science with Mr. Green
... Always limits on population growth in nature ...
... Always limits on population growth in nature ...
Island restoration
The ecological restoration of islands, or island restoration, is the application of the principles of ecological restoration to islands and island groups. Islands, due to their isolation, are home to many of the world's endemic species, as well as important breeding grounds for seabirds and some marine mammals. Their ecosystems are also very vulnerable to human disturbance and particularly to introduced species, due to their small size. Island groups such as New Zealand and Hawaii have undergone substantial extinctions and losses of habitat. Since the 1950s several organisations and government agencies around the world have worked to restore islands to their original states; New Zealand has used them to hold natural populations of species that would otherwise be unable to survive in the wild. The principal components of island restoration are the removal of introduced species and the reintroduction of native species.