Tale of Two Scorpions - Teacher Copy2
... Teacher Note: Stop here and have a classroom discussion about situations that arise in scientific experiments that lead to increased messiness within the data. In this experiment, mouse #5 tipped over both cups during one of the trials. Ashlee and Matt ended the trial early because the data collecte ...
... Teacher Note: Stop here and have a classroom discussion about situations that arise in scientific experiments that lead to increased messiness within the data. In this experiment, mouse #5 tipped over both cups during one of the trials. Ashlee and Matt ended the trial early because the data collecte ...
Ant species richness and evenness increase along a
... of species richness and evenness with increasing pollution. Simpson’s index decreased while the slopes of rank-abundance curves increased with Zn concentration, both indicating a decrease of species dominance with increasing pollution (Simpson index: P ¼ 0.008, r ¼ 0.636; slopes of rank-abundance cu ...
... of species richness and evenness with increasing pollution. Simpson’s index decreased while the slopes of rank-abundance curves increased with Zn concentration, both indicating a decrease of species dominance with increasing pollution (Simpson index: P ¼ 0.008, r ¼ 0.636; slopes of rank-abundance cu ...
Mossy Prehensile-tailed Gecko Rhacodactylus chahoua Class
... R. chahoua lays two well calcified eggs that become adhered to one another shortly after laying. This is known as "egg gluing". R. chahoua is the only Rhacodactylus gecko that lays adhering eggs. The eggs are generally laid on top of the substrate (generally ...
... R. chahoua lays two well calcified eggs that become adhered to one another shortly after laying. This is known as "egg gluing". R. chahoua is the only Rhacodactylus gecko that lays adhering eggs. The eggs are generally laid on top of the substrate (generally ...
Plants
... PRA: Differences in the assessment of plants • invasive plants have effects on ecosystems, habitats or species, impacts are generally described in qualitative rather than in quantitative terms ...
... PRA: Differences in the assessment of plants • invasive plants have effects on ecosystems, habitats or species, impacts are generally described in qualitative rather than in quantitative terms ...
as a PDF
... Communities assembled with two invaders per time step (scenario B) did not lead to a complete invasion resistant state after either 500 (Figure 3) or 10,000 time steps. The per species colonization success did not greatly vary over the first 500 time steps ranging from 19.1% to 30.0% (x̄ = 23.5%, s. ...
... Communities assembled with two invaders per time step (scenario B) did not lead to a complete invasion resistant state after either 500 (Figure 3) or 10,000 time steps. The per species colonization success did not greatly vary over the first 500 time steps ranging from 19.1% to 30.0% (x̄ = 23.5%, s. ...
rtf - Florida Entomological Society
... 23. Fred Punzo: Effects of contact with maternal parent and siblings on hunting behavior, spatial learning, and CNS development in spiderlings of Hogna carolinensis (Araneae: Lycosidae) Spiderlings of H. carolinensis that had contact with their maternal parent and siblings during the first 5 days af ...
... 23. Fred Punzo: Effects of contact with maternal parent and siblings on hunting behavior, spatial learning, and CNS development in spiderlings of Hogna carolinensis (Araneae: Lycosidae) Spiderlings of H. carolinensis that had contact with their maternal parent and siblings during the first 5 days af ...
A Bug`s Life: Competition Among Species Towards
... focus on possible interactions between one species with the others, that is species evolve di¤erently when coming into contact with other individuals to contrast their living activities. Not surprisingly, it might be also the case that individuals do not interfere with one another, or rather connect ...
... focus on possible interactions between one species with the others, that is species evolve di¤erently when coming into contact with other individuals to contrast their living activities. Not surprisingly, it might be also the case that individuals do not interfere with one another, or rather connect ...
Fifty years of change in northern upland forest understories: Identity
... of 54 prairie remnants in southern Wisconsin, Leach and Givnish (1996) documented large extinction rates (8–60%) over a 32–52-year period that were most pronounced at unburned sites and fell disproportionately on plants that were short, small-seeded, and nitrogen fixers. They interpreted these patte ...
... of 54 prairie remnants in southern Wisconsin, Leach and Givnish (1996) documented large extinction rates (8–60%) over a 32–52-year period that were most pronounced at unburned sites and fell disproportionately on plants that were short, small-seeded, and nitrogen fixers. They interpreted these patte ...
Lichens - Corridor appalachien
... canopy and are the main food source for caribou. They can also be part of the diet of numerous species including moose, deer, flying squirrels, and a host of invertebrates including mites, slugs and snails. Lichens are used as nesting material by flying squirrels and by almost fifty species of birds ...
... canopy and are the main food source for caribou. They can also be part of the diet of numerous species including moose, deer, flying squirrels, and a host of invertebrates including mites, slugs and snails. Lichens are used as nesting material by flying squirrels and by almost fifty species of birds ...
Teacher: Jeannie Sparks Grade: 12th e. Science For the Week of
... cycles and evaluate the effects of abiotic factors on the local ecosystem. ...
... cycles and evaluate the effects of abiotic factors on the local ecosystem. ...
1369-1376
... may lead to exclusion of one or both species. One of the mechanisms by which two similar species can coexist is the differential usage of resources (Tilman, 1977). By diverging in traits relevant to the uptake and use of resources, there will be a niche separation, and consequently competition will ...
... may lead to exclusion of one or both species. One of the mechanisms by which two similar species can coexist is the differential usage of resources (Tilman, 1977). By diverging in traits relevant to the uptake and use of resources, there will be a niche separation, and consequently competition will ...
Strong density- and diversity-related effects help to maintain tree
... diversity of the local environment, effectively increasing the number and diversity of ecological niches for host species in the forest. The best-known of these models is that of Janzen (15) and Connell (16), which predicts that species-specific pests will tend to be more numerous near mature trees. ...
... diversity of the local environment, effectively increasing the number and diversity of ecological niches for host species in the forest. The best-known of these models is that of Janzen (15) and Connell (16), which predicts that species-specific pests will tend to be more numerous near mature trees. ...
Slide 1
... - Reduce range of resources used = resource partitioning. - If this selective pressure continues, it may result in a morphological change in the competition. This adaptive response to competition is called Character Displacement ...
... - Reduce range of resources used = resource partitioning. - If this selective pressure continues, it may result in a morphological change in the competition. This adaptive response to competition is called Character Displacement ...
Ecology of Estuaries I. Importance of Estuaries
... has hybridized with native cordgrass Spartina foliosa ...
... has hybridized with native cordgrass Spartina foliosa ...
Patterns in the co-occurrence of fish species in streams: the role of
... (Menezes 1972) and endemic fish taxa (Bohlke et al. 1978) in South America. Its fauna has more than 285 species, the majority of which are endemic (Bizerril 1994). Most river systems in eastern Brazil are found along the Serra do Mar, a relatively high altitude mountain range (2,400 m) along the Bra ...
... (Menezes 1972) and endemic fish taxa (Bohlke et al. 1978) in South America. Its fauna has more than 285 species, the majority of which are endemic (Bizerril 1994). Most river systems in eastern Brazil are found along the Serra do Mar, a relatively high altitude mountain range (2,400 m) along the Bra ...
Ecology glossary
... distribution, which does not increase simply because the mean itself increases or because the units of measurement change. Coevolution The process by which members of two (or more) species contribute reciprocally to the forces of natural selection that they exert on each other, e.g. parasites and th ...
... distribution, which does not increase simply because the mean itself increases or because the units of measurement change. Coevolution The process by which members of two (or more) species contribute reciprocally to the forces of natural selection that they exert on each other, e.g. parasites and th ...
Diversity, invasive species and extinctions in insular ecosystems
... locales and species (Fisher & Owens 2004; Sullivan et al. 2006). Since current extinction threats are taxon- or context-specific (Owens & Bennett 2000), such analyses may be of limited utility for conservation planning or in elucidating the natural history of extinctions. While global models are vit ...
... locales and species (Fisher & Owens 2004; Sullivan et al. 2006). Since current extinction threats are taxon- or context-specific (Owens & Bennett 2000), such analyses may be of limited utility for conservation planning or in elucidating the natural history of extinctions. While global models are vit ...
AP Biology Ecology Unit Study Questions These questions are
... individuals are recaptured out of a total of 20 individuals. What is the population size estimate? What are the assumptions and limitations to this method? Describe a situation where the assumption ...
... individuals are recaptured out of a total of 20 individuals. What is the population size estimate? What are the assumptions and limitations to this method? Describe a situation where the assumption ...
Differences in leaf δ13C among four dominant species in a
... there do not exist significant differences between them in terms of the mean leaf δ13C. In correspondence to this pattern, the time interval between them is fairly small (ca. 20 y). Furthermore, the mean leaf δ13C values of both A. gmelinii and L. davurica were significantly more positive than that ...
... there do not exist significant differences between them in terms of the mean leaf δ13C. In correspondence to this pattern, the time interval between them is fairly small (ca. 20 y). Furthermore, the mean leaf δ13C values of both A. gmelinii and L. davurica were significantly more positive than that ...
Arion vulgaris - the aetiology of an invasive species
... slugs are attacked (WEIDEMA 2006). One of the biological control methods currently used to fight A. vulgaris, as well as other slugs (e.g., A. rufus, Deroceras reticulatum) is the application of Nemaslug, which contains a parasitic nematode (Phasmarhabditis hermaphrodita) that hosts the bacterium Mo ...
... slugs are attacked (WEIDEMA 2006). One of the biological control methods currently used to fight A. vulgaris, as well as other slugs (e.g., A. rufus, Deroceras reticulatum) is the application of Nemaslug, which contains a parasitic nematode (Phasmarhabditis hermaphrodita) that hosts the bacterium Mo ...
Resource Resilience, Human Niche Construction, and the Long
... Native Americans to adversely impact plant communities and ecosystems (Smith and Wishine 2000). I argue here, however, that it is worthwhile to look beyond the ‘‘low impact’’ profile of these small-scale indigenous societies and to view their limited predation pressure and limited potential for envi ...
... Native Americans to adversely impact plant communities and ecosystems (Smith and Wishine 2000). I argue here, however, that it is worthwhile to look beyond the ‘‘low impact’’ profile of these small-scale indigenous societies and to view their limited predation pressure and limited potential for envi ...
species - TavistockCollegeScience
... i.e. the relative numbers or abundance of individuals in each species Species Richness (number of different species in an area) Number of different species per sample (in an area) is a measure of richness - the more species present in a sample, the greater the species richness. Measured by taking ra ...
... i.e. the relative numbers or abundance of individuals in each species Species Richness (number of different species in an area) Number of different species per sample (in an area) is a measure of richness - the more species present in a sample, the greater the species richness. Measured by taking ra ...
Richness and species composition of arboreal arthropods affected
... Whittaker and Heegaard 2003), recent syntheses indicate that, at local scales, this pattern commonly is humpshaped in plant communities, but is more often a simple positive relationship within animal communities (Waide et al. 1999; Mittelbach et al. 2001). Experimental manipulation of top predators ...
... Whittaker and Heegaard 2003), recent syntheses indicate that, at local scales, this pattern commonly is humpshaped in plant communities, but is more often a simple positive relationship within animal communities (Waide et al. 1999; Mittelbach et al. 2001). Experimental manipulation of top predators ...
species interactions - University of Toronto Mississauga
... interaction is detrimental to one species but negligible to the other, an interaction called amensalism. Predation, herbivory, and parasitism all have a positive effect on one population and a negative effect on the other (/). However, while predators always kill their prey, the hosts of parasites ...
... interaction is detrimental to one species but negligible to the other, an interaction called amensalism. Predation, herbivory, and parasitism all have a positive effect on one population and a negative effect on the other (/). However, while predators always kill their prey, the hosts of parasites ...
Behavioral Mediators of the Human Population Effect on Global
... 1,000 times that of historic background rates (Pimm et al. 1995). In addition, it should be made clear that also there have been real losses of biodiversity at the genetic level of many species, as surviving populations lessen in numbers. This is an important consideration because the resilience and ...
... 1,000 times that of historic background rates (Pimm et al. 1995). In addition, it should be made clear that also there have been real losses of biodiversity at the genetic level of many species, as surviving populations lessen in numbers. This is an important consideration because the resilience and ...
Introduced species
An introduced, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its native distributional range, which has arrived there by human activity, either deliberate or accidental. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are called invasive species. Some have a negative effect on a local ecosystem. Some introduced species may have no negative effect or only minor impact. Some species have been introduced intentionally to combat pests. They are called biocontrols and may be regarded as beneficial as an alternative to pesticides in agriculture for example. In some instances the potential for being beneficial or detrimental in the long run remains unknown. A list of some introduced species is given in a separate article.The effects of introduced species on natural environments have gained much scrutiny from scientists, governments, farmers and others.