A P element-homologous sequence in the house fly, Musca domestica
... from M. domestica. The overall picture is one of reasonable conservation in the central portion of the P elements comprising exons 1 and 2, and considerable divergence in exons 0 and 3. It is unclear why the central portion of the P element has been more conserved over evolutionary time than regions ...
... from M. domestica. The overall picture is one of reasonable conservation in the central portion of the P elements comprising exons 1 and 2, and considerable divergence in exons 0 and 3. It is unclear why the central portion of the P element has been more conserved over evolutionary time than regions ...
File - Pedersen Science
... • Dispersion is the pattern of spacing among individuals within the boundaries of the population. • Density is the result of an interplay between processes that add individuals to a population and those that remove individuals. Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin ...
... • Dispersion is the pattern of spacing among individuals within the boundaries of the population. • Density is the result of an interplay between processes that add individuals to a population and those that remove individuals. Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin ...
Ecological niche - Biomathematics and Statistics Scotland
... competing species, since its population growth rate decreases to negative values in some conditions. To a good approximation, if we ignore stochastic sampling from a heterogeneous species’ population, species does fill its realized niche. According to Hutchinson’s formalization, niches of different ...
... competing species, since its population growth rate decreases to negative values in some conditions. To a good approximation, if we ignore stochastic sampling from a heterogeneous species’ population, species does fill its realized niche. According to Hutchinson’s formalization, niches of different ...
Ant-mediated seed dispersal does not facilitate niche expansion
... disperser are nested within those for the plant. The strength of this interaction varies across space and time, and in doing so may undermine attempts to predict future distributions. Further, given that myrmecochores are typically poor dispersers, the incomplete niche overlap between the plant and ...
... disperser are nested within those for the plant. The strength of this interaction varies across space and time, and in doing so may undermine attempts to predict future distributions. Further, given that myrmecochores are typically poor dispersers, the incomplete niche overlap between the plant and ...
Chapter 53 Population Ecology Powerpoint
... • Dispersion is the pattern of spacing among individuals within the boundaries of the population. • Density is the result of an interplay between processes that add individuals to a population and those that remove individuals. Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin ...
... • Dispersion is the pattern of spacing among individuals within the boundaries of the population. • Density is the result of an interplay between processes that add individuals to a population and those that remove individuals. Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin ...
Mutualism or cooperation among competitors promotes coexistence
... two isoclines intersect, and the absolute value of slope (|dN2 /dN1 |) of isoclines of species 1 is larger than the slope (|dN2 /dN1 |) of species 2. There are no stable equilibriums for the other situations, and one of the species will be excluded under each of the situations (Fig. 1a, c, and d). ...
... two isoclines intersect, and the absolute value of slope (|dN2 /dN1 |) of isoclines of species 1 is larger than the slope (|dN2 /dN1 |) of species 2. There are no stable equilibriums for the other situations, and one of the species will be excluded under each of the situations (Fig. 1a, c, and d). ...
The Serengeti food web: empirical quantification and analysis of
... Higher extinction risks are more often found among large-sized species and ⁄ or species at high trophic levels (Cardillo et al. 2005). This observation provides a predictable sequence of species loss under increased human pressure and is used in theoretical studies that investigate the consequences ...
... Higher extinction risks are more often found among large-sized species and ⁄ or species at high trophic levels (Cardillo et al. 2005). This observation provides a predictable sequence of species loss under increased human pressure and is used in theoretical studies that investigate the consequences ...
Document
... 2 - Score or bit score is a value calculated from the number of gaps and substitutions associated with each aligned sequence. The higher the score, the more significant the alignment. Each score links to the corresponding pairwise alignment between query sequence and hit sequence (also referred to a ...
... 2 - Score or bit score is a value calculated from the number of gaps and substitutions associated with each aligned sequence. The higher the score, the more significant the alignment. Each score links to the corresponding pairwise alignment between query sequence and hit sequence (also referred to a ...
2014 Symposium Program
... capabilities, and acoustic data processing software have provided an opportunity to characterize the acoustic dimension of ecosystems. Soundscape ecology is a relatively new field of study that quantifies the collection of sounds that emanate from a landscape. The types of sound within a landscape a ...
... capabilities, and acoustic data processing software have provided an opportunity to characterize the acoustic dimension of ecosystems. Soundscape ecology is a relatively new field of study that quantifies the collection of sounds that emanate from a landscape. The types of sound within a landscape a ...
as a PDF
... The outcome of competition between two closely related species can be altered by change in one component of the environment. Birch (1953) raised the grain beetles (Calandra oryzae) and (Rhizopertha dominica) at several different temperatures and observed that Calandra eliminated Rhizopertha at 290C ...
... The outcome of competition between two closely related species can be altered by change in one component of the environment. Birch (1953) raised the grain beetles (Calandra oryzae) and (Rhizopertha dominica) at several different temperatures and observed that Calandra eliminated Rhizopertha at 290C ...
Determinants of Distribu_on
... Determinants of Distribu/on 4) Bio?c Interac?ons: Diffuse Compe??on Diffuse compe??on: the combined effect of compe//on with many other species – one species is nega/vely affected by numerous other species that collec/vely cause significant deple/on of shared resources (MacArthur 1972). Add more ...
... Determinants of Distribu/on 4) Bio?c Interac?ons: Diffuse Compe??on Diffuse compe??on: the combined effect of compe//on with many other species – one species is nega/vely affected by numerous other species that collec/vely cause significant deple/on of shared resources (MacArthur 1972). Add more ...
Appalachian Corridor News
... A first dominant land for our new Affiliate Members! Conservation Espace Nature Shefford In March 2012, Mr Jean-Pierre Rémillard donated 8.4ha (21 acres) of land to Conservation Espace Nature Shefford (CENS), which represents the organisation’s first dominant land! Many thanks to Mr Rémillard for hi ...
... A first dominant land for our new Affiliate Members! Conservation Espace Nature Shefford In March 2012, Mr Jean-Pierre Rémillard donated 8.4ha (21 acres) of land to Conservation Espace Nature Shefford (CENS), which represents the organisation’s first dominant land! Many thanks to Mr Rémillard for hi ...
Behavioral barriers to non-migratory movements of birds
... movement have been proposed. It has been suggested that Neotropical migrant forest birds are more sensitive to habitat loss and fragmentation than are temperate resident species, in that they are less likely to occupy fragmented landscapes (e.g., Blake 1986, Robbins et al. 1989). It has been suggest ...
... movement have been proposed. It has been suggested that Neotropical migrant forest birds are more sensitive to habitat loss and fragmentation than are temperate resident species, in that they are less likely to occupy fragmented landscapes (e.g., Blake 1986, Robbins et al. 1989). It has been suggest ...
The Evolutionary Ecology of Carnivorous Plants
... I. S U M M A R Y This review synthesizes published data and new results concerning the evolutionary ecology of carnivorous plants. These diverse taxa occur in many angiosperm clades, but are united by a common ecological "niche" botanical carnivory. Aspects of their life-history, including developme ...
... I. S U M M A R Y This review synthesizes published data and new results concerning the evolutionary ecology of carnivorous plants. These diverse taxa occur in many angiosperm clades, but are united by a common ecological "niche" botanical carnivory. Aspects of their life-history, including developme ...
Production, Predation and Food Niche Segregation in a Marine
... biomass and production of the benthic infauna constituting the main food resource for the predaceous epifauna. The bay was stratified according to depth and substrate composition (Evans and Tallmark, 1976, 1977). Random sampling was carried out in the different strata within the border lines of HWL ...
... biomass and production of the benthic infauna constituting the main food resource for the predaceous epifauna. The bay was stratified according to depth and substrate composition (Evans and Tallmark, 1976, 1977). Random sampling was carried out in the different strata within the border lines of HWL ...
A weed risk assessment system for new conservation weeds in New
... open habitats unsuitable for frugivorous birds, and a scoring system for that habitat type might give bird dispersal a lower score. Even so, many naturalised species have abundant wind-blown seeds, but only a few are considered to be conservation weeds. Thus, attributes such as dispersal mode may be ...
... open habitats unsuitable for frugivorous birds, and a scoring system for that habitat type might give bird dispersal a lower score. Even so, many naturalised species have abundant wind-blown seeds, but only a few are considered to be conservation weeds. Thus, attributes such as dispersal mode may be ...
Niche and fitness differences relate the maintenance of diversity to
... competitors are solutions to Ṅi ¼ Nigi(N) for i ¼ 1 . . . n, where the per capita growth rate, gi, is a scalar function of the vector of state variables, N. The dimension of N may exceed n when growth rates depend on variables other than the n competitors. In Eq. 1, for example, N also includes res ...
... competitors are solutions to Ṅi ¼ Nigi(N) for i ¼ 1 . . . n, where the per capita growth rate, gi, is a scalar function of the vector of state variables, N. The dimension of N may exceed n when growth rates depend on variables other than the n competitors. In Eq. 1, for example, N also includes res ...
Mass rearing the endangered Palos Verdes blue butterfly
... Under any breeding system changes in gene frequency will occur across generations by either natural or artificial selection, or random sampling (genetic drift) (Mackauer 1972; Mackauer 1976). The changes are inevitable because the environment of the breeding system will not be the same as the enviro ...
... Under any breeding system changes in gene frequency will occur across generations by either natural or artificial selection, or random sampling (genetic drift) (Mackauer 1972; Mackauer 1976). The changes are inevitable because the environment of the breeding system will not be the same as the enviro ...
Molecular characterization of MHC class II in a nonmodel anuran
... MHC diversity for conservation genetics should not be overrated (Acevedo-Whitehouse and Cunningham 2006), associations between certain MHC alleles and disease resistance or susceptibility have been found in a number of species (Sommer 2005). Overall, this marker has been found often to be more infor ...
... MHC diversity for conservation genetics should not be overrated (Acevedo-Whitehouse and Cunningham 2006), associations between certain MHC alleles and disease resistance or susceptibility have been found in a number of species (Sommer 2005). Overall, this marker has been found often to be more infor ...
Name of indicator 3.10 Zooplankton mean size vs. total stock (MSTS)
... Indicator calculation: The index gives species population abundance relative to population at base time (period). Average wintering population during 1991 - 2000 period is suggested as base level. To obtain the population index, site and year specific counts of individuals of particular species are ...
... Indicator calculation: The index gives species population abundance relative to population at base time (period). Average wintering population during 1991 - 2000 period is suggested as base level. To obtain the population index, site and year specific counts of individuals of particular species are ...
What Does the Federal Listing of Koala as Vulnerable Mean?
... au/epbc/publications/nes-guidelines.html. These ‘significant impact’ guidelines should be read in conjunction with the specific guidelines for the koala, which are currently being prepared. If you have any doubts about whether your project will have a significant impact on the species you can always ...
... au/epbc/publications/nes-guidelines.html. These ‘significant impact’ guidelines should be read in conjunction with the specific guidelines for the koala, which are currently being prepared. If you have any doubts about whether your project will have a significant impact on the species you can always ...
Mutualistic Mimicry and Filtering by Altitude Shape the Structure of
... (Valiente-Banuet and Verdu 2007; Verdu et al. 2009; Alexandrou et al. 2011), none have examined their importance in montane ecosystems. Here we investigate jointly the importance of habitat filtering by altitude and positive interactions in communities of Müllerian mimetic butterflies in the easter ...
... (Valiente-Banuet and Verdu 2007; Verdu et al. 2009; Alexandrou et al. 2011), none have examined their importance in montane ecosystems. Here we investigate jointly the importance of habitat filtering by altitude and positive interactions in communities of Müllerian mimetic butterflies in the easter ...
Existence and construction of large stable food webs
... winner will “take all”, i.e. the most-competitive species will take over all available resources. These considerations imply that ...
... winner will “take all”, i.e. the most-competitive species will take over all available resources. These considerations imply that ...
