File - Mrs. Schneider`s Science home page
... • When one partner is really small and lives inside of the other partner, the other partner is called the host. • The really small partner can be called a mutualist, a commensalist, or a parasite (depending on the type of relationship). • Sometimes, the really small partner is called the symbiont. T ...
... • When one partner is really small and lives inside of the other partner, the other partner is called the host. • The really small partner can be called a mutualist, a commensalist, or a parasite (depending on the type of relationship). • Sometimes, the really small partner is called the symbiont. T ...
Viewpoint: A theoretical basis for planning woody plant control to
... overgrazing by livestock and failed attempts at brush control (Fulbright 1991) that fire is not a practical tool to reduce brush density. Overgrazing by cattle in certain arid and semiarid landscapeshas resulted in severe soil compaction and manipulations such as heavy discing are required to promot ...
... overgrazing by livestock and failed attempts at brush control (Fulbright 1991) that fire is not a practical tool to reduce brush density. Overgrazing by cattle in certain arid and semiarid landscapeshas resulted in severe soil compaction and manipulations such as heavy discing are required to promot ...
redroot pigweed Amaranthus retroflexus L.
... High nitrogen levels in the soil, partial drought, and low light levels favor the accumulation of toxic nitrates in this species. Illness or death can result when animals ingest plants with high nitrate concentrations (Walsh 1993, Herbarium of the University of Georgia 2002, Costea et al. 2004). Win ...
... High nitrogen levels in the soil, partial drought, and low light levels favor the accumulation of toxic nitrates in this species. Illness or death can result when animals ingest plants with high nitrate concentrations (Walsh 1993, Herbarium of the University of Georgia 2002, Costea et al. 2004). Win ...
First Black-footed Ferret Born in New Mexico in 75 years
... The hatchlings were found by Rosalinda Palomo Ramos, a New Mexico State University graduate student, who is studying the diet of the tortoises. The three wild hatchlings have now joined seven of their 2009 siblings, which had hatched from eggs that were collected on the ranch and were then placed in ...
... The hatchlings were found by Rosalinda Palomo Ramos, a New Mexico State University graduate student, who is studying the diet of the tortoises. The three wild hatchlings have now joined seven of their 2009 siblings, which had hatched from eggs that were collected on the ranch and were then placed in ...
Ecological and evolutionary consequences of size
... Our second approach is more comprehensive in that we also included species for which there is only indirect evidence for size-selective harvesting, such as a reduction in mean or maximum body size through time or between exploited and protected areas. Under heavy harvesting pressure, even when it is ...
... Our second approach is more comprehensive in that we also included species for which there is only indirect evidence for size-selective harvesting, such as a reduction in mean or maximum body size through time or between exploited and protected areas. Under heavy harvesting pressure, even when it is ...
Discovery of the invasive Mayan Cichlid fish “Cichlasoma
... 98127 and HI 8733C). To determine salinity (ppt), we applied the conductivity-salinity relationship equation of Williams (1986). All “C.” urophthalmus specimens and a few other species caught during our visit were preserved immediately in the field, some placed in 10% formalin and others in 70% etha ...
... 98127 and HI 8733C). To determine salinity (ppt), we applied the conductivity-salinity relationship equation of Williams (1986). All “C.” urophthalmus specimens and a few other species caught during our visit were preserved immediately in the field, some placed in 10% formalin and others in 70% etha ...
The Interplay of Biotic and Abiotic Factors in a Semiarid
... are essentially limited by available resources (i.e.. "donor-controlled": Polis and Strong 1996). and that "top-down" interactions (i.e., predation. herbivorq) are relatively unimportant. Thus. predator or herbivore exclusions would result in little or no effects on consumers or primary producers at ...
... are essentially limited by available resources (i.e.. "donor-controlled": Polis and Strong 1996). and that "top-down" interactions (i.e., predation. herbivorq) are relatively unimportant. Thus. predator or herbivore exclusions would result in little or no effects on consumers or primary producers at ...
shared and unique features of diversification in greater antillean
... To examine the effects of phylogenetic relationships on our MANOVA results, we used sequences for 121 anole species and one outgroup (Polychrus acutirostris) from a 1481bp mitochondrial DNA region that spanned the protein coding regions ND1 to COI, including the complete ND2 gene, the origin of ligh ...
... To examine the effects of phylogenetic relationships on our MANOVA results, we used sequences for 121 anole species and one outgroup (Polychrus acutirostris) from a 1481bp mitochondrial DNA region that spanned the protein coding regions ND1 to COI, including the complete ND2 gene, the origin of ligh ...
The Pinto Abalone Deserves Protection Under the Endangered
... cluster together and release their sperm and eggs into the water. Obviously, this reproductive strategy depends on a certain density of animals to succeed—and pinto abalone populations, in some cases, have suffered such a decline that individuals are simply too far apart from one another to reproduc ...
... cluster together and release their sperm and eggs into the water. Obviously, this reproductive strategy depends on a certain density of animals to succeed—and pinto abalone populations, in some cases, have suffered such a decline that individuals are simply too far apart from one another to reproduc ...
The importance of bees and other insect
... result of a long and intimate co evolutionary relationship. The pollinating bees of the Brazil nut tree Bertholletia excelsa is an illustrative example of such a relationship and its economic importance. The Brazil nut tree grows wild in the Amazon Forest. Brazil nuts are one of the economically mos ...
... result of a long and intimate co evolutionary relationship. The pollinating bees of the Brazil nut tree Bertholletia excelsa is an illustrative example of such a relationship and its economic importance. The Brazil nut tree grows wild in the Amazon Forest. Brazil nuts are one of the economically mos ...
The structure of N eotropical mammal communities: an appraisal of
... in California utilized a wider range of sites, with morphologically similar species showing significant differences in habitats used. Two species, Dupodomys agilis and Peromyscus maniculatus, preferred stations with low shrub cover (< 50 percent). The less-rich Chilean fauna used a narrower spectrum ...
... in California utilized a wider range of sites, with morphologically similar species showing significant differences in habitats used. Two species, Dupodomys agilis and Peromyscus maniculatus, preferred stations with low shrub cover (< 50 percent). The less-rich Chilean fauna used a narrower spectrum ...
Ch5WithgottPPT2
... • The process of generating new species - A single species can generate multiple species • Allopatric speciation = species formation due to physical separation of populations - Can be separated by glaciers, rivers, mountains - The main mode of species creation Copyright © 2008 Pearson Education, Inc ...
... • The process of generating new species - A single species can generate multiple species • Allopatric speciation = species formation due to physical separation of populations - Can be separated by glaciers, rivers, mountains - The main mode of species creation Copyright © 2008 Pearson Education, Inc ...
stc_inf_7_10_summary_study_inv_alien_aq_weeds_0
... Naivasha in various ways. Some of these also appear to be invasive. At least two, the Louisiana red swamp crayfish (Procambarus clarkii) and a large water rodent, the Coypu (Myocastor coypus) are anecdotally blamed for the loss of the indigenous water lilies, formerly important as a food species for ...
... Naivasha in various ways. Some of these also appear to be invasive. At least two, the Louisiana red swamp crayfish (Procambarus clarkii) and a large water rodent, the Coypu (Myocastor coypus) are anecdotally blamed for the loss of the indigenous water lilies, formerly important as a food species for ...
hau_vivian_tbio_brief1
... There is often little geographic and taxonomic coverage in some older databases and they are not detailed enough. Some only recorded the absence or presence of certain species (Hudson et al.). Another problem is whether certain species are contributing, harming, or not having an impact on the envir ...
... There is often little geographic and taxonomic coverage in some older databases and they are not detailed enough. Some only recorded the absence or presence of certain species (Hudson et al.). Another problem is whether certain species are contributing, harming, or not having an impact on the envir ...
Life 9e - Garvness
... 24. Suppose a lumber company proposes to clear-cut a large area of forest, but it aims to leave small patches of forest to provide habitat for forest animals. Which of the following is a weakness of this method of conservation? a. Small patches cannot support populations of species that require larg ...
... 24. Suppose a lumber company proposes to clear-cut a large area of forest, but it aims to leave small patches of forest to provide habitat for forest animals. Which of the following is a weakness of this method of conservation? a. Small patches cannot support populations of species that require larg ...
Unveiling a mechanism for species decline in fragmented habitats
... we can cite: (i) species that are overly sensitive to habitat size; (ii) a lower genetic variability associated with a smaller number of individuals living in fragments (thus decreasing the fitness of future generations); (iii) reduction of migration owing to hostile interfragment regions (known as ...
... we can cite: (i) species that are overly sensitive to habitat size; (ii) a lower genetic variability associated with a smaller number of individuals living in fragments (thus decreasing the fitness of future generations); (iii) reduction of migration owing to hostile interfragment regions (known as ...
Chapter04 - Duluth High School
... Environmental indicators are organisms or physical factors that serve as a gauge for ...
... Environmental indicators are organisms or physical factors that serve as a gauge for ...
The Population Biology of Invasive Species Ann K. Sakai
... After initial successful colonization, the next stage of invasions is characterized by establishment of a viable, self-sustaining, population. There may be little correlation between traits required for initial colonization and traits needed for establishment. Establishment in a natural community ma ...
... After initial successful colonization, the next stage of invasions is characterized by establishment of a viable, self-sustaining, population. There may be little correlation between traits required for initial colonization and traits needed for establishment. Establishment in a natural community ma ...
Ecological Significance of Within- Species Leaf Trait Variability: A
... The vast majority of studies on plant trait variability in local communities (i.e. at scales of meters to tens of meters) have focused on between-species trait variability, because this has long been seen as the main component of plant community response to changes in environmental conditions (Garni ...
... The vast majority of studies on plant trait variability in local communities (i.e. at scales of meters to tens of meters) have focused on between-species trait variability, because this has long been seen as the main component of plant community response to changes in environmental conditions (Garni ...
Using the ESS Maximum Principle to Explore Root
... influences its own growth and the growth of others only through the consumption of essential light and soil resources, and that plant species only differ in how they allocate biomass between roots, stems, leaves, and seeds. Reynolds & Pacala (1993) simplified this model by restricting biomass alloca ...
... influences its own growth and the growth of others only through the consumption of essential light and soil resources, and that plant species only differ in how they allocate biomass between roots, stems, leaves, and seeds. Reynolds & Pacala (1993) simplified this model by restricting biomass alloca ...
Chapter 14: Interactions in Ecosystems
... A habitat differs from a niche. On the vast plains of Africa, tall grasses grow among trees and shrubs, and small pools of water surrounded by thirsty animals dot the landscape. This challenging environment is the home of the African lion, shown in Figure 1.1. Here, lions stalk through tall grass to ...
... A habitat differs from a niche. On the vast plains of Africa, tall grasses grow among trees and shrubs, and small pools of water surrounded by thirsty animals dot the landscape. This challenging environment is the home of the African lion, shown in Figure 1.1. Here, lions stalk through tall grass to ...
thesis12.11 - Academic Commons
... suggested that Schinus also has the ability to inhibit the growth of competing vegetation through the production of allelopathic substances. Its potential dispersers are gray catbird, raccoon, opossum, and robins, meaning Schinus is also a competitor for dispersal with native plants who share many o ...
... suggested that Schinus also has the ability to inhibit the growth of competing vegetation through the production of allelopathic substances. Its potential dispersers are gray catbird, raccoon, opossum, and robins, meaning Schinus is also a competitor for dispersal with native plants who share many o ...
ESDay2013MediaSample.. - Endangered Species Coalition
... throughout the country will celebrate Endangered Species Day by hosting special events ranging from the Kansas City Zoo’s “Learning Fest” to an endangered species scavenger hunt at the Georgia Aquarium in Atlanta. “AZA is pleased to be a partner in Endangered Species Day helping to raise awareness a ...
... throughout the country will celebrate Endangered Species Day by hosting special events ranging from the Kansas City Zoo’s “Learning Fest” to an endangered species scavenger hunt at the Georgia Aquarium in Atlanta. “AZA is pleased to be a partner in Endangered Species Day helping to raise awareness a ...
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.