Seasons of a Plant - Chicago Botanic Garden
... 8. Now ask students to imagine that one year these biological events did not happen at the right time. Have them make a list of factors that might cause them to occur at a different time than they normally do. 9. Discuss their lists as a class. Many of the things on the list should be related to cl ...
... 8. Now ask students to imagine that one year these biological events did not happen at the right time. Have them make a list of factors that might cause them to occur at a different time than they normally do. 9. Discuss their lists as a class. Many of the things on the list should be related to cl ...
ABSTRACT Title of Document:
... Chapter 1: Detritivores mediate predator-herbivore interactions Table 1. ANOVA results for the main and interactive effects of the detritivorous isopod Littorophiloscia vittata (I), the herbivorous planthopper Prokelisia dolus (H), the predaceous spider Pardosa littoralis (P), and leaf litter (L) on ...
... Chapter 1: Detritivores mediate predator-herbivore interactions Table 1. ANOVA results for the main and interactive effects of the detritivorous isopod Littorophiloscia vittata (I), the herbivorous planthopper Prokelisia dolus (H), the predaceous spider Pardosa littoralis (P), and leaf litter (L) on ...
ECOLOGY
... insecticide. When these surviving insects reproduce, this gene may be inherited by their offspring. The number of insecticide-resistant insects usually increases over time because increasing numbers of offspring with this gene are able to survive and reproduce. What is the ecological relationship be ...
... insecticide. When these surviving insects reproduce, this gene may be inherited by their offspring. The number of insecticide-resistant insects usually increases over time because increasing numbers of offspring with this gene are able to survive and reproduce. What is the ecological relationship be ...
Effect of segregation and genetic exchange on arbuscular
... P < 0.001 and r = 0.17, P = 0.027, respectively). However, we found significant negative correlations between the dry weight of P. lanceolata and arbuscular colonization, for both the genetic exchange and the segregation experiments (r = )0.22, P = 0.047 and r = )0.42, P < 0.001, respectively). The ...
... P < 0.001 and r = 0.17, P = 0.027, respectively). However, we found significant negative correlations between the dry weight of P. lanceolata and arbuscular colonization, for both the genetic exchange and the segregation experiments (r = )0.22, P = 0.047 and r = )0.42, P < 0.001, respectively). The ...
Animal defenses against predation/predator-prey
... system diverges from this single value, it does not return to that joint equilibrium. The equilibrium point is not what theory calls an attractor. This is called neutral stability. Instead, perturbation causes populations to oscillate around the equilibrium in a continuous cycle. These are the cycle ...
... system diverges from this single value, it does not return to that joint equilibrium. The equilibrium point is not what theory calls an attractor. This is called neutral stability. Instead, perturbation causes populations to oscillate around the equilibrium in a continuous cycle. These are the cycle ...
printer-friendly version of benchmark
... Another keystone predator along the California coastline is the sea star (Piaster) which helps to keep the population of mussels (Mytilus) in intertidal zones in check. By limiting the mussel populations, other organisms can maintain a presence in the tidal pools. In many habitats in North America, ...
... Another keystone predator along the California coastline is the sea star (Piaster) which helps to keep the population of mussels (Mytilus) in intertidal zones in check. By limiting the mussel populations, other organisms can maintain a presence in the tidal pools. In many habitats in North America, ...
Prey preference, interaction with selected natural
... for 3 days with the adult females. In order to reduce possible adaptation of the predator to a certain prey species, all the tested D. tamaninii individuals were fed a mixed population of the 5 prey species during the entire time, from their emergence until the beginning of the experiments. Ten repl ...
... for 3 days with the adult females. In order to reduce possible adaptation of the predator to a certain prey species, all the tested D. tamaninii individuals were fed a mixed population of the 5 prey species during the entire time, from their emergence until the beginning of the experiments. Ten repl ...
Ground Rules, exams, etc. (no “make up” exams) Text: read
... “The recognition that animals can hold their rate of reproduction below the maximum that is possible for them throws fresh light upon that most hideous blot on the fair face of nature, predation, the killing and devouring of one creature by another. It is well known that if predators are suddenly r ...
... “The recognition that animals can hold their rate of reproduction below the maximum that is possible for them throws fresh light upon that most hideous blot on the fair face of nature, predation, the killing and devouring of one creature by another. It is well known that if predators are suddenly r ...
Plasticity and trait-mediated indirect interactions among plants
... Oswald J. Schmitz and Robert D. Holt. Published by Cambridge University Press. © Cambridge University Press 2012. ...
... Oswald J. Schmitz and Robert D. Holt. Published by Cambridge University Press. © Cambridge University Press 2012. ...
Annual Review of Ecology Evolution and Systematics
... of plant-associated microbes is small, their effects on ecosystems may be large through their influence on plant functional traits. Figure 1 shows the genera of endophytic bacteria commonly isolated from plants. The model symbiosis between legumes and rhizobia has been studied since the 1880s, and th ...
... of plant-associated microbes is small, their effects on ecosystems may be large through their influence on plant functional traits. Figure 1 shows the genera of endophytic bacteria commonly isolated from plants. The model symbiosis between legumes and rhizobia has been studied since the 1880s, and th ...
Guide to Native Grassland Management in
... during the winter. Examples of cool-season grasses include Canada wildrye, western wheatgrass, and smooth brome. The optimum temperature for cool-season plant growth is 77ºF. Warm-season plants grow from late-spring to early-fall, with optimum growth temperatures being about 95ºF. Nebraska rangeland ...
... during the winter. Examples of cool-season grasses include Canada wildrye, western wheatgrass, and smooth brome. The optimum temperature for cool-season plant growth is 77ºF. Warm-season plants grow from late-spring to early-fall, with optimum growth temperatures being about 95ºF. Nebraska rangeland ...
Methods for dietary studies on marine mammals
... A number of important decisions must be made about prey identification: for instance should only fresh prey be considered? should all hard parts be identified? and so on. Thus, to avoid errors due to digestive erosion and loss of material, one strategy is to identify only “fresh” remains. In practic ...
... A number of important decisions must be made about prey identification: for instance should only fresh prey be considered? should all hard parts be identified? and so on. Thus, to avoid errors due to digestive erosion and loss of material, one strategy is to identify only “fresh” remains. In practic ...
CT_PlantStewIndex_090930
... (slender three-awned grass), Juncus brachycarpus (short fruited rush), and Ludwigia alternifolia (seed box). The three species were found within remnant lakeplain wet-mesic prairies and mesic sand prairies. The statutory requirements of Part 365 (Endangered Species Protection) of P.A. 451 of 1994 we ...
... (slender three-awned grass), Juncus brachycarpus (short fruited rush), and Ludwigia alternifolia (seed box). The three species were found within remnant lakeplain wet-mesic prairies and mesic sand prairies. The statutory requirements of Part 365 (Endangered Species Protection) of P.A. 451 of 1994 we ...
Butterfly Breeding Guide
... Rauparaha’s Copper/mokarakare butterflies are New Zealand natives. They acquired their European name, Rauparaha, because they lived along the same coastal regions as Te Rauparaha, a rangatira (chief) and war leader of Ngāti Toa. They live mainly along coastal dunes, although they can be found wherev ...
... Rauparaha’s Copper/mokarakare butterflies are New Zealand natives. They acquired their European name, Rauparaha, because they lived along the same coastal regions as Te Rauparaha, a rangatira (chief) and war leader of Ngāti Toa. They live mainly along coastal dunes, although they can be found wherev ...
A hierarchical deductive approach for functional types in disturbed
... much of the tolerance to grazing of perennial species (Briske & Richards 1995), but many species also persist after grazing due to their unpalatability (toughness, thorns) or toxicity of their tissues (Anderson & Briske 1995). Most mature individuals of resprouter species persist after disturbance, ...
... much of the tolerance to grazing of perennial species (Briske & Richards 1995), but many species also persist after grazing due to their unpalatability (toughness, thorns) or toxicity of their tissues (Anderson & Briske 1995). Most mature individuals of resprouter species persist after disturbance, ...
A Generalized Food Web for Lake Pontchartrain in Southeastern
... Food webs illustrate a set of interconnected food chains by which energy and materials circulate within an ecosystem. Energy enters the food web from the sun and is subsequently lost at each stage or level as; feces (solid waste), movement energy and heat energy resulting in only a small amount of e ...
... Food webs illustrate a set of interconnected food chains by which energy and materials circulate within an ecosystem. Energy enters the food web from the sun and is subsequently lost at each stage or level as; feces (solid waste), movement energy and heat energy resulting in only a small amount of e ...
Post-Tour Classroom Activities
... say that soil only becomes dirt when we find it in places we don’t think it belongs, such as on our clothes or in our homes. Soil as Habitat Maker One convenient definition of habitat is: There area in which a plant or animal normally lives. This definition also implies the importance of habitats be ...
... say that soil only becomes dirt when we find it in places we don’t think it belongs, such as on our clothes or in our homes. Soil as Habitat Maker One convenient definition of habitat is: There area in which a plant or animal normally lives. This definition also implies the importance of habitats be ...
SCNPS Journal Winter 2012 - the South Carolina Native Plant Society!
... dark in late summer or early fall, considerably earlier than the first frost. The early change in color results from enzymatic reactions in the plant that create the blue pigment. This is most likely a day-length response. The senesced stems can break off at the soil level, thus creating a “tumblewe ...
... dark in late summer or early fall, considerably earlier than the first frost. The early change in color results from enzymatic reactions in the plant that create the blue pigment. This is most likely a day-length response. The senesced stems can break off at the soil level, thus creating a “tumblewe ...
How To Be a Predator Department of Zoology, University of
... Hydra and Daphnia, the amount of food provided the experimental populations could be measured with fair precision. The Daphnia were fed on unicellular algae grown on sterile agar medium. The algae were washed off the medium, the density of algae in suspension was measured photo electrically, and a c ...
... Hydra and Daphnia, the amount of food provided the experimental populations could be measured with fair precision. The Daphnia were fed on unicellular algae grown on sterile agar medium. The algae were washed off the medium, the density of algae in suspension was measured photo electrically, and a c ...
Desert biome
... The desert (from the Latin deserere, to abandon) is a habitat with poor rainfalls. In many deserts, the annual rainfall is below 50 mm, but it can even be zero. In this ecosystem, the shortage of water is the main ecological factor affecting vegetal and animal life. As well as the shortage of rains, ...
... The desert (from the Latin deserere, to abandon) is a habitat with poor rainfalls. In many deserts, the annual rainfall is below 50 mm, but it can even be zero. In this ecosystem, the shortage of water is the main ecological factor affecting vegetal and animal life. As well as the shortage of rains, ...
Consumers indirectly increase infection risk in grassland food webs
... theory has demonstrated a variety of mechanisms by which predation and competition in food webs can indirectly control infection risk in hosts, there have until now been no experimental tests of this theory. We sampled the effect of long-term exclusion of large vertebrate herbivores on the prevalenc ...
... theory has demonstrated a variety of mechanisms by which predation and competition in food webs can indirectly control infection risk in hosts, there have until now been no experimental tests of this theory. We sampled the effect of long-term exclusion of large vertebrate herbivores on the prevalenc ...
Using constraint lines to characterize plant
... presented here assumes that for any initial density, N,, plants will grow in size until resources become limiting (see Fig. 2). At this point the thinning line is reached and competition for resources begins. Further increase in size Log (density m-2) is only possible if some plants die. Others will ...
... presented here assumes that for any initial density, N,, plants will grow in size until resources become limiting (see Fig. 2). At this point the thinning line is reached and competition for resources begins. Further increase in size Log (density m-2) is only possible if some plants die. Others will ...
Herbivore
_grazing_-_20050809.jpg?width=300)
A herbivore is an animal anatomically and physiologically adapted to eating plant material, for example foliage, for the main component of its diet. As a result of their plant diet, herbivorous animals typically have mouthparts adapted to rasping or grinding. Horses and other herbivores have wide flat teeth that are adapted to grinding grass, tree bark, and other tough plant material.