Ecological and evolutionary implications of food subsidies
... birds (Margalida et al. 2010; Martınez-Abraın et al. 2012). Bird feeding is particularly important in some industrialised countries (e.g. the USA and the UK, see Table 1) with important consequences for passerine communities and the cascading effects associated (Table S1, see also Robb et al. 2008 ...
... birds (Margalida et al. 2010; Martınez-Abraın et al. 2012). Bird feeding is particularly important in some industrialised countries (e.g. the USA and the UK, see Table 1) with important consequences for passerine communities and the cascading effects associated (Table S1, see also Robb et al. 2008 ...
Big APES Exam review questions for each unit
... e. How urban and rural populations differ in developed and developing nations. 15. Name and describe five modes of urban transportation. Rank the five modes of transportation in order of environmental impact. 16. List five ways to reduce pollution and increase biodiversity in urban areas. 17. Descri ...
... e. How urban and rural populations differ in developed and developing nations. 15. Name and describe five modes of urban transportation. Rank the five modes of transportation in order of environmental impact. 16. List five ways to reduce pollution and increase biodiversity in urban areas. 17. Descri ...
Population Genetics
... They may be better at obtaining food and water, protecting themselves from predators or have a higher reproductive potential. When these organisms reproduce, these “successful” genes will be transmitted to the offspring. The offspring will be better able to survive; therefore, subsequent generations ...
... They may be better at obtaining food and water, protecting themselves from predators or have a higher reproductive potential. When these organisms reproduce, these “successful” genes will be transmitted to the offspring. The offspring will be better able to survive; therefore, subsequent generations ...
When can two plant species facilitate each other`s pollination?
... Feldman, T. S., Morris, W. F. and Wilson, W. G. 2004. When can two plant species facilitate each other’s pollination? / Oikos 105: 197 /207. Facilitation occurs when an increase in the density of one species causes an increase in the population growth rate or the density of a second species. In pl ...
... Feldman, T. S., Morris, W. F. and Wilson, W. G. 2004. When can two plant species facilitate each other’s pollination? / Oikos 105: 197 /207. Facilitation occurs when an increase in the density of one species causes an increase in the population growth rate or the density of a second species. In pl ...
Evenness drives consistent diversity effects in intensive grassland
... richness. The contribution of a particular interaction depends on the strength of the interaction and the relative abundances of the species involved (Sheehan et al. 2006). One would not expect a large contribution from two species that interact strongly but for which one or both have a very low rel ...
... richness. The contribution of a particular interaction depends on the strength of the interaction and the relative abundances of the species involved (Sheehan et al. 2006). One would not expect a large contribution from two species that interact strongly but for which one or both have a very low rel ...
population dynamics
... For species inhabiting unstable, unpredictable environments; or species with very high juvenile mortality: • The odds of suitable habitat for the next generation are low. • Therefore, natural selection favors the generalist populations that opportunistically harvest any available resource to grow ...
... For species inhabiting unstable, unpredictable environments; or species with very high juvenile mortality: • The odds of suitable habitat for the next generation are low. • Therefore, natural selection favors the generalist populations that opportunistically harvest any available resource to grow ...
Document
... (a) High atmospheric pressure at high altitudes (b) Low atmospheric pressure at high altitude (c) High mountain height and high temperature (d) Heavy snowfall at high altitude and low temperature ...
... (a) High atmospheric pressure at high altitudes (b) Low atmospheric pressure at high altitude (c) High mountain height and high temperature (d) Heavy snowfall at high altitude and low temperature ...
Interspecific interaction: The analysis of complex structures in
... pileus, are inverse trophic relationships with age, can hardly be expressed in the form of a predator-prey system. Therefore, the terms "agent" and "reagent" were introduced, representing the two coordinates in an interaction matrix (Fig. 3). In some cases, the agent may be seen as the prey which ac ...
... pileus, are inverse trophic relationships with age, can hardly be expressed in the form of a predator-prey system. Therefore, the terms "agent" and "reagent" were introduced, representing the two coordinates in an interaction matrix (Fig. 3). In some cases, the agent may be seen as the prey which ac ...
Ecological Equivalence: A Realistic Assumption for Niche Theory as
... Background: Hubbell’s 2001 neutral theory unifies biodiversity and biogeography by modelling steady-state distributions of species richness and abundances across spatio-temporal scales. Accurate predictions have issued from its core premise that all species have identical vital rates. Yet no ecologi ...
... Background: Hubbell’s 2001 neutral theory unifies biodiversity and biogeography by modelling steady-state distributions of species richness and abundances across spatio-temporal scales. Accurate predictions have issued from its core premise that all species have identical vital rates. Yet no ecologi ...
Effects of the non-native amphibian species Discoglossus pictus on
... Reyer 2003). If non-native species substantially outperform co-occurring natives, then we can expect serious widespread consequences for the community structure (Daehler 2003). On the other hand, if nonnative species rarely outperform co-occurring natives, or if their fitness is only marginally supe ...
... Reyer 2003). If non-native species substantially outperform co-occurring natives, then we can expect serious widespread consequences for the community structure (Daehler 2003). On the other hand, if nonnative species rarely outperform co-occurring natives, or if their fitness is only marginally supe ...
Lesson Overview - St. Pius X High School
... Density-dependent limiting factors operate strongly only when population density—the number of organisms per unit area—reaches a certain level. These factors do not affect small, scattered populations as much. Density-dependent limiting factors include competition, predation, herbivory, parasitism, ...
... Density-dependent limiting factors operate strongly only when population density—the number of organisms per unit area—reaches a certain level. These factors do not affect small, scattered populations as much. Density-dependent limiting factors include competition, predation, herbivory, parasitism, ...
Limits to Growth - Hoquiam Science
... Herbivory can also contribute to changes in population numbers. From a plant’s perspective, herbivores are predators. On parts of Isle Royale, large, dense moose populations can eat so much balsam fir that the population of these favorite food plants drops. When this happens, moose may suffer from l ...
... Herbivory can also contribute to changes in population numbers. From a plant’s perspective, herbivores are predators. On parts of Isle Royale, large, dense moose populations can eat so much balsam fir that the population of these favorite food plants drops. When this happens, moose may suffer from l ...
Predator-prey population dynamics are connected
... Mimicry – look like something that is dangerous or tastes bad Batesian mimicry – palatable species mimics an unpalatable species model ...
... Mimicry – look like something that is dangerous or tastes bad Batesian mimicry – palatable species mimics an unpalatable species model ...
A1987K474900001
... paper seems to prove I was correct, and hindsight in part shows why. First, the article conAugust 31, 1987 tained an empirical review and as such documented patterns against which ecologists I was in the Bahamas doing research on liz- could compare their own systems; for ards when I received a lette ...
... paper seems to prove I was correct, and hindsight in part shows why. First, the article conAugust 31, 1987 tained an empirical review and as such documented patterns against which ecologists I was in the Bahamas doing research on liz- could compare their own systems; for ards when I received a lette ...
Zebra mussel (Dreissena polymorpha)
... Work in Progress: Clarifying the problem with ArcGIS Apply a population growth model to overlaid distribution maps of mussels and gobies - Where do they interact? - What will be the effect on mussel population size? ...
... Work in Progress: Clarifying the problem with ArcGIS Apply a population growth model to overlaid distribution maps of mussels and gobies - Where do they interact? - What will be the effect on mussel population size? ...
Now! - Soojeede.com
... Population growth is the increase in number of individuals comprising an aggregation (mass) . It is not necessarily the result of more births than deaths, but may be caused by increased survivorship, movement into the area of new organisms of the species under consideration, or other factors Growth ...
... Population growth is the increase in number of individuals comprising an aggregation (mass) . It is not necessarily the result of more births than deaths, but may be caused by increased survivorship, movement into the area of new organisms of the species under consideration, or other factors Growth ...
polychaete Capitella capitata (Type I): their cause
... under constant conditions of food input, temperature, and salinity. Population biomass and numbers oscillated with a period of approximately 6 to 8 mo and population peaks ranged from 120,000 to 150.000 indiv. m-2. Estimates of carrying capacity of the population along with analyses of the reproduct ...
... under constant conditions of food input, temperature, and salinity. Population biomass and numbers oscillated with a period of approximately 6 to 8 mo and population peaks ranged from 120,000 to 150.000 indiv. m-2. Estimates of carrying capacity of the population along with analyses of the reproduct ...
Reprint
... have examined the conditions under which the storage effect is likely to evolve [28,29]. In general, however, there are still very few studies that connect evolutionary analyses with communityecological questions, such as the relative importance of different assembly and coexistence mechanisms. In t ...
... have examined the conditions under which the storage effect is likely to evolve [28,29]. In general, however, there are still very few studies that connect evolutionary analyses with communityecological questions, such as the relative importance of different assembly and coexistence mechanisms. In t ...
Good Buddies
... ways. A very specific interaction that may occur between the organisms is defined as symbiosis, a close, coevolutionary association between one species (host) and another species (symbiont). Species may interact in a variety of different ways: 1. Amensalism (- , 0) -- in this interaction, one specie ...
... ways. A very specific interaction that may occur between the organisms is defined as symbiosis, a close, coevolutionary association between one species (host) and another species (symbiont). Species may interact in a variety of different ways: 1. Amensalism (- , 0) -- in this interaction, one specie ...
paper - Jordi Bascompte
... Food webs. The Caribbean food web16 describes the trophic relationships between 249 species/trophic groups in a wide geographic region of the Caribbean sea, comprising B1,000 km2 and stretching from the surface to 100-m depth. Obtained through gut content analysis17,18, it is the most complete and a ...
... Food webs. The Caribbean food web16 describes the trophic relationships between 249 species/trophic groups in a wide geographic region of the Caribbean sea, comprising B1,000 km2 and stretching from the surface to 100-m depth. Obtained through gut content analysis17,18, it is the most complete and a ...