Drawing ecological inferences from coincident patterns of
... Schoener 2011). One manifestation of this has been a focus on the interaction between ecological and evolutionary processes in driving the ongoing dynamics of populations and communities. Studies of such eco-evolutionary dynamics have been subject to many reviews (e.g. Fussmann et al. 2007; Pelletie ...
... Schoener 2011). One manifestation of this has been a focus on the interaction between ecological and evolutionary processes in driving the ongoing dynamics of populations and communities. Studies of such eco-evolutionary dynamics have been subject to many reviews (e.g. Fussmann et al. 2007; Pelletie ...
Resource partitioning as determining factor in structuring fish
... numerous in variety and taxonomically interesting (Allen et al. 2010 [1]). Like other Himalayan rivers, Teesta river and its tributaries provide a fair ecological niche for many indigenous and a few exotic fish species. These augmented the study of freshwater fish species and their various ...
... numerous in variety and taxonomically interesting (Allen et al. 2010 [1]). Like other Himalayan rivers, Teesta river and its tributaries provide a fair ecological niche for many indigenous and a few exotic fish species. These augmented the study of freshwater fish species and their various ...
The influence of biodiversity on invasibility of terrestrial plant
... The major feature of diversity which negatively affects invasion is resource partitioning. As evidenced by the intermediate disturbance hypothesis, resource partitioning is not a prerequisite for diversity. Even if diversity has arisen in stable environments, competition can still be interrupted by ...
... The major feature of diversity which negatively affects invasion is resource partitioning. As evidenced by the intermediate disturbance hypothesis, resource partitioning is not a prerequisite for diversity. Even if diversity has arisen in stable environments, competition can still be interrupted by ...
Neanderthal-modern human competition?
... order establish whether or not they were exploiting the same faunal resources. If the two human taxa are not associated with the same large mammals, it is more difficult to invoke competition between them and the hypothesis is falsified. However, if there is a level of similarity of faunal Copyright ...
... order establish whether or not they were exploiting the same faunal resources. If the two human taxa are not associated with the same large mammals, it is more difficult to invoke competition between them and the hypothesis is falsified. However, if there is a level of similarity of faunal Copyright ...
Food web structure and the evolution of ecological communities
... many other species. There are now a large number of evolutionary models, mostly in the physics literature, that investigate the dynamics of extinction events and the possibility of large scale avalanches of extinctions. Mass extinctions are an important feature observed in the fossil record. Biologi ...
... many other species. There are now a large number of evolutionary models, mostly in the physics literature, that investigate the dynamics of extinction events and the possibility of large scale avalanches of extinctions. Mass extinctions are an important feature observed in the fossil record. Biologi ...
Biological Populations
... misleading impression. For example, the death rate differs between the three life groups of humans and thus one would rather use ASMR. The ASMR reveals that in underdeveloped (developing) countries, infant mortality rate is high compared to developed countries. Also, for example the number of deaths ...
... misleading impression. For example, the death rate differs between the three life groups of humans and thus one would rather use ASMR. The ASMR reveals that in underdeveloped (developing) countries, infant mortality rate is high compared to developed countries. Also, for example the number of deaths ...
Workshop on Predation – Thomas Herbert, Ph.D. I. Basics of the
... migrate to an area where there are others of your species. 5. (Lynx) Recall the data on the relationship between lynx and hare populations as analyzed by MacLulich. What is your relationship to the trappers? (Consider all possibilities.) Predation: The trappers are your predators when they trap you. ...
... migrate to an area where there are others of your species. 5. (Lynx) Recall the data on the relationship between lynx and hare populations as analyzed by MacLulich. What is your relationship to the trappers? (Consider all possibilities.) Predation: The trappers are your predators when they trap you. ...
Nordic Society Oikos
... tant in population dynamics because generalized habi- backwaters (pers. obs.). tat and resource use enhances the possibilities for juvenile bottlenecks that are intensified by interspecific competition (Werner 1986, Persson 1988). This paper Experimental stream system expands on previous work (Reset ...
... tant in population dynamics because generalized habi- backwaters (pers. obs.). tat and resource use enhances the possibilities for juvenile bottlenecks that are intensified by interspecific competition (Werner 1986, Persson 1988). This paper Experimental stream system expands on previous work (Reset ...
Ecological niche , , Jitka Polechov amp David Storch Department of
... necessarily leads to a moment when the resource level is insufficient for further growth. competitors may act also as predators. Even if two species sharing several resources have exactly the same requirements and ability to utilize them. no two species utilizing. Due to the difficulties with the co ...
... necessarily leads to a moment when the resource level is insufficient for further growth. competitors may act also as predators. Even if two species sharing several resources have exactly the same requirements and ability to utilize them. no two species utilizing. Due to the difficulties with the co ...
Notes and Comments
... ecosystem productivity and hence stability, noting that experimental systems should be designed to separate effects due to these two factors. Here, we ask how competitive asymmetries alter the response of temporal stability to increasing diversity at both the community and population level. First, w ...
... ecosystem productivity and hence stability, noting that experimental systems should be designed to separate effects due to these two factors. Here, we ask how competitive asymmetries alter the response of temporal stability to increasing diversity at both the community and population level. First, w ...
concepts-of-biology
... existence,” which states that individuals will compete (with members of their own or other species) for limited resources. The successful ones are more likely to survive and pass on the traits that made them successful to the next generation at a greater rate (natural selection). To model the realit ...
... existence,” which states that individuals will compete (with members of their own or other species) for limited resources. The successful ones are more likely to survive and pass on the traits that made them successful to the next generation at a greater rate (natural selection). To model the realit ...
Giving-up densities of foraging gerbils: the effect of interspecific
... on the patch use of its subordinate competitor, G. andersoni allenbyi (Allenby’s gerbil), to better understand interspecific competition between the two species. We used manipulated resource patches (seed trays) covered with cages with two adjustable species-specific gates (either opened or closed to ...
... on the patch use of its subordinate competitor, G. andersoni allenbyi (Allenby’s gerbil), to better understand interspecific competition between the two species. We used manipulated resource patches (seed trays) covered with cages with two adjustable species-specific gates (either opened or closed to ...
PREDATOR IDENTITY AND ECOLOGICAL IMPACTS
... Interactions among species influence individual fitness, population dynamics, and community structure (see reviews by Schoener 1983, Sih et al. 1985, Gurevitch et al. 1992, 2000, Bertness and Callaway 1994). An individual species, however, may co-occur with very different sets of species at differen ...
... Interactions among species influence individual fitness, population dynamics, and community structure (see reviews by Schoener 1983, Sih et al. 1985, Gurevitch et al. 1992, 2000, Bertness and Callaway 1994). An individual species, however, may co-occur with very different sets of species at differen ...
Ecological niche - Biomathematics and Statistics Scotland
... for the same resources. Realized niche thus always has a narrower extent along respective dimensions; a species which could potentially live in a broad range of humidity conditions, for instance, may occupy a much narrower range of these conditions in an environment with competing species, since its ...
... for the same resources. Realized niche thus always has a narrower extent along respective dimensions; a species which could potentially live in a broad range of humidity conditions, for instance, may occupy a much narrower range of these conditions in an environment with competing species, since its ...
A generalized model for population dynamics where interactions
... Other sets of parameters can exist if we permute any of the relationships between rx0 , ry0 , bx0 , by0 and r̃1 , r̃2 , b̃12 , b̃21 . These changes can be seen in table 3 and they alter the relationship of one species to the other, but in a way they do not offer a new interesting behavior. The two r ...
... Other sets of parameters can exist if we permute any of the relationships between rx0 , ry0 , bx0 , by0 and r̃1 , r̃2 , b̃12 , b̃21 . These changes can be seen in table 3 and they alter the relationship of one species to the other, but in a way they do not offer a new interesting behavior. The two r ...
The interplay between environmental conditions and Allee effects
... to represent low and high population growth rates since this parameter could vary widely depending on environmental conditions. The length of breeding season corresponds to the length of the experiment. Given these parameter estimates, the critical density of E. lacustris is expected to fall between ...
... to represent low and high population growth rates since this parameter could vary widely depending on environmental conditions. The length of breeding season corresponds to the length of the experiment. Given these parameter estimates, the critical density of E. lacustris is expected to fall between ...
Fish population size, and not density, as the determining factor of
... 2002). Studies on macroparasites are complicated by other variables also differing between host populations, in particular the diversity of other host species co-occurring with the host species investigated. Here, we take advantage of a natural system in which populations of the crucian carp, Carassi ...
... 2002). Studies on macroparasites are complicated by other variables also differing between host populations, in particular the diversity of other host species co-occurring with the host species investigated. Here, we take advantage of a natural system in which populations of the crucian carp, Carassi ...
AP Biology Summer Assignment- Due Date: Wednesday, Aug 21s
... prey species. Sea urchins were shown to limit the abundance and distribution of seaweeds. Abiotic Factors Global patterns of geographic distributions are influenced by abiotic factors such as regional differences in temperature, rainfall, and light. An environment may have both spatial and temporal ...
... prey species. Sea urchins were shown to limit the abundance and distribution of seaweeds. Abiotic Factors Global patterns of geographic distributions are influenced by abiotic factors such as regional differences in temperature, rainfall, and light. An environment may have both spatial and temporal ...
A Meta-analysis of Studies on Plant Growth
... synthesis of studies which address five hypotheses concerning interspecific comparisons of relative growth rate and allocation to roots vs. shoots. While some authors have regarded these patterns as established facts, they will be regarded here as hypotheses to be tested empirically. The five hypoth ...
... synthesis of studies which address five hypotheses concerning interspecific comparisons of relative growth rate and allocation to roots vs. shoots. While some authors have regarded these patterns as established facts, they will be regarded here as hypotheses to be tested empirically. The five hypoth ...
Chapter 5
... ecological niche for very long—a concept known as the competitive exclusion principle. When there is intense competition between two species for the same resources, both species suffer harm by having reduced access to important resources. If one species can take over the largest share of one or more ...
... ecological niche for very long—a concept known as the competitive exclusion principle. When there is intense competition between two species for the same resources, both species suffer harm by having reduced access to important resources. If one species can take over the largest share of one or more ...
