COMPETITION AND SALT-MARSH PLANT ZONATION: STRESS
... Barton 1992). Grime’s competitor/stress tolerator/ruderal theory (hereafter CSR theory) of plant life histories classifies plant strategies as competitive, stresstolerant, or ruderal (Grime 1977, 1979). It predicts that the intensity of competition, or the degree to which the presence of neighbors r ...
... Barton 1992). Grime’s competitor/stress tolerator/ruderal theory (hereafter CSR theory) of plant life histories classifies plant strategies as competitive, stresstolerant, or ruderal (Grime 1977, 1979). It predicts that the intensity of competition, or the degree to which the presence of neighbors r ...
The Human Population
... 6. What is environmental resistance? Ans: Organisms cannot reproduce indefinitely at their intrinsic rates of increase because the environment sets limits, collectively called environmental resistance. Environmental resistance includes such unfavorable environmental conditions as the limited availab ...
... 6. What is environmental resistance? Ans: Organisms cannot reproduce indefinitely at their intrinsic rates of increase because the environment sets limits, collectively called environmental resistance. Environmental resistance includes such unfavorable environmental conditions as the limited availab ...
Evolution, biodiversity, and Population Ecology
... Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings ...
... Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings ...
Extinction order and altered community structure
... were extremely low (T.H. Larsen, unpublished data). Species collected at only one site were omitted from the analysis because it is likely that they were not widely distributed across the original unfragmented landscape. Bee abundance and diversity were assessed in watermelon patches along 50 m tran ...
... were extremely low (T.H. Larsen, unpublished data). Species collected at only one site were omitted from the analysis because it is likely that they were not widely distributed across the original unfragmented landscape. Bee abundance and diversity were assessed in watermelon patches along 50 m tran ...
COMPETITION FOR HUMMINGBIRD POLLINATION SHAPES
... of these species to converge on a single color that might be best suited to attract hummingbirds suggests that other factors, such as interspecific competition for pollinators, may have driven color divergence. Moreover, the extensive overlap of pollinator assemblages among sympatric taxa (Smith et ...
... of these species to converge on a single color that might be best suited to attract hummingbirds suggests that other factors, such as interspecific competition for pollinators, may have driven color divergence. Moreover, the extensive overlap of pollinator assemblages among sympatric taxa (Smith et ...
Apparent predation risk: tests of habitat selection theory reveal
... systems (Lima 1998). Such experiments are sorely needed because: (1) trait-mediated interactions may often depend on the density of other prey (Peacor, 2003); (2) trait-mediated effects, such as reduced prey activity in the presence of predators (Peacor and Werner, 1997), may themselves ‘cascade’ ac ...
... systems (Lima 1998). Such experiments are sorely needed because: (1) trait-mediated interactions may often depend on the density of other prey (Peacor, 2003); (2) trait-mediated effects, such as reduced prey activity in the presence of predators (Peacor and Werner, 1997), may themselves ‘cascade’ ac ...
Variation in Body Shape across Species and Populations in a
... and Technology, Kastanienbaum, Luzern, Switzerland ...
... and Technology, Kastanienbaum, Luzern, Switzerland ...
CHARACTERIZATION OF ENVIRONMENTAL PARAMETERS AND
... The rocky intertidal has an array of species found in the different zones. The intertidal is typically broken up into three parts: high, middle and low. The zones can be differentiated by either measuring the physical height from mean low water level or by identifying the key species (typically alga ...
... The rocky intertidal has an array of species found in the different zones. The intertidal is typically broken up into three parts: high, middle and low. The zones can be differentiated by either measuring the physical height from mean low water level or by identifying the key species (typically alga ...
competition for hummingbird pollination shapes flower color
... of these species to converge on a single color that might be best suited to attract hummingbirds suggests that other factors, such as interspecific competition for pollinators, may have driven color divergence. Moreover, the extensive overlap of pollinator assemblages among sympatric taxa (Smith et ...
... of these species to converge on a single color that might be best suited to attract hummingbirds suggests that other factors, such as interspecific competition for pollinators, may have driven color divergence. Moreover, the extensive overlap of pollinator assemblages among sympatric taxa (Smith et ...
Environmental responses, not species interactions
... theory has been developed by focusing on simple limiting cases in which only one of these three drivers operates. For example, in a community composed of large populations (no demographic stochasticity) with weak interspecific interations, community-wide species synchrony should be determined by the ...
... theory has been developed by focusing on simple limiting cases in which only one of these three drivers operates. For example, in a community composed of large populations (no demographic stochasticity) with weak interspecific interations, community-wide species synchrony should be determined by the ...
Larsen et al (2005) Ecol Letters pdf
... were extremely low (T.H. Larsen, unpublished data). Species collected at only one site were omitted from the analysis because it is likely that they were not widely distributed across the original unfragmented landscape. Bee abundance and diversity were assessed in watermelon patches along 50 m tran ...
... were extremely low (T.H. Larsen, unpublished data). Species collected at only one site were omitted from the analysis because it is likely that they were not widely distributed across the original unfragmented landscape. Bee abundance and diversity were assessed in watermelon patches along 50 m tran ...
ECOLOGY REVIEW By Kelly Riedell Brookings Biology
... Essential knowledge 2.D.1: All biological systems from cells and organisms to populations, communities and ecosystems are affected by complex biotic and abiotic interactions involving exchange of matter and free energy. a. Cell activities are affected by interactions with biotic and abiotic factors. ...
... Essential knowledge 2.D.1: All biological systems from cells and organisms to populations, communities and ecosystems are affected by complex biotic and abiotic interactions involving exchange of matter and free energy. a. Cell activities are affected by interactions with biotic and abiotic factors. ...
State of California State Water Resources Control Board DIVISION OF WATER RIGHTS
... long-term decline in populations caused by persistently inadequate flows has been exacerbated by the current drought. In addition, migratory species, including Chinook salmon, steelhead, green sturgeon, and Sacramento splittail, benefit from higher river inflows to the Delta. As a result of human wa ...
... long-term decline in populations caused by persistently inadequate flows has been exacerbated by the current drought. In addition, migratory species, including Chinook salmon, steelhead, green sturgeon, and Sacramento splittail, benefit from higher river inflows to the Delta. As a result of human wa ...
Population
... Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings ...
... Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings ...
... chemical environmental heterogeneity. In this sense, Hurlbert [6] severely criticizing how ecologists are designing and analyzing their field experiments, stated that pseudoreplication occurred in many cases, specially in benthological studies with small and middle sized enclosures. This paper revie ...
A Critical Review of Twenty Years` Use of the Resource
... species resource use and resource supply rates in the environment (aij and R values, respectively, in fig. 2). Other very similar approaches were developed at about the same time. Maguire (1973) used a related model to describe effect and response components of the niche, as well as interactions bet ...
... species resource use and resource supply rates in the environment (aij and R values, respectively, in fig. 2). Other very similar approaches were developed at about the same time. Maguire (1973) used a related model to describe effect and response components of the niche, as well as interactions bet ...
SudingMS_final_1007_RYS
... Werner 1983) and for functional traits (Goldberg 1990), it has been applied to ecosystem Although we discuss functional classification in terms of species and the grouping of species, it also applies to groupings at other levels of organization, such as genotypes or phenotypes of individuals acclima ...
... Werner 1983) and for functional traits (Goldberg 1990), it has been applied to ecosystem Although we discuss functional classification in terms of species and the grouping of species, it also applies to groupings at other levels of organization, such as genotypes or phenotypes of individuals acclima ...
Terrestrial predators and abiotic conditions affect hatching survival
... Taken together our results show that the interpretations of food web dynamics can be quite different depending on the suit of focal species. For example at low tadpole densities we might assume that the reduction in tadpole inputs due to predator and abiotic factors would have a positive effect on p ...
... Taken together our results show that the interpretations of food web dynamics can be quite different depending on the suit of focal species. For example at low tadpole densities we might assume that the reduction in tadpole inputs due to predator and abiotic factors would have a positive effect on p ...
Understanding Our Environment
... Von Liebig proposed the single factor in shortest supply relative to demand is the critical determinant in species distribution. Shelford later expanded by stating each environmental factor has both minimum and maximum levels, tolerance limits, beyond which a particular species cannot survive. ...
... Von Liebig proposed the single factor in shortest supply relative to demand is the critical determinant in species distribution. Shelford later expanded by stating each environmental factor has both minimum and maximum levels, tolerance limits, beyond which a particular species cannot survive. ...
Species diversity, invasion success, and ecosystem functioning
... change predictably, each species thus may have a temporal or seasonal niche. These seasonal niches appear to provide the basis for complementary effects of species on resource use and invasion resistance (Fig. 1B; Stachowicz et al. 2002a). While the results shown in Fig. 1 can largely be attributed ...
... change predictably, each species thus may have a temporal or seasonal niche. These seasonal niches appear to provide the basis for complementary effects of species on resource use and invasion resistance (Fig. 1B; Stachowicz et al. 2002a). While the results shown in Fig. 1 can largely be attributed ...
Recent advances in ecological stoichiometry: insights for population
... To understand how stoichiometry can constrain population growth, it is necessary to examine the effects of stoichiometry on different demographic rates (survival, growth, development, reproduction and migration) at different life /history stages. An organism’s requirements of different elements may ...
... To understand how stoichiometry can constrain population growth, it is necessary to examine the effects of stoichiometry on different demographic rates (survival, growth, development, reproduction and migration) at different life /history stages. An organism’s requirements of different elements may ...