Gummy Bear Genetics
... species, to increase their population size and ultimately reintroduce them to the wild. Another benefit of the program was that while in captivity, these Gummy bears were also safe from consumption by the Homo sapiens. The breeding program began with a purebred male and female bear of each of the fo ...
... species, to increase their population size and ultimately reintroduce them to the wild. Another benefit of the program was that while in captivity, these Gummy bears were also safe from consumption by the Homo sapiens. The breeding program began with a purebred male and female bear of each of the fo ...
Asymmetric specialization
... We used two null models. In null model 1, interactions were randomly distributed among pairs of plant and pollinator species; all plant or animal species had the same probability of interacting, independently of their frequency of interaction, thus assuming neutrality at the species level (i.e., all ...
... We used two null models. In null model 1, interactions were randomly distributed among pairs of plant and pollinator species; all plant or animal species had the same probability of interacting, independently of their frequency of interaction, thus assuming neutrality at the species level (i.e., all ...
Coexistence of nearly neutral species - SYSU
... simulated the effects of differential birth rates (as proposed by Zhang and Lin 1997) on species-abundance distributions. These models depart from Hubbell’s neutral model by only considering species difference in either birth rate or death rate, but not both, although in reality species differ in bo ...
... simulated the effects of differential birth rates (as proposed by Zhang and Lin 1997) on species-abundance distributions. These models depart from Hubbell’s neutral model by only considering species difference in either birth rate or death rate, but not both, although in reality species differ in bo ...
Regional adaptation improves the performance of grassland plant
... Many plant species are locally or regionally adapted to their environment as demonstrated by reciprocal transplant experiments (Leimu & Fischer 2008). An advantage of local or regional plants and seeds mainly results from adaptation to factors such as climate, soil or land use (Macel et al. 2007; Ra ...
... Many plant species are locally or regionally adapted to their environment as demonstrated by reciprocal transplant experiments (Leimu & Fischer 2008). An advantage of local or regional plants and seeds mainly results from adaptation to factors such as climate, soil or land use (Macel et al. 2007; Ra ...
Explaining the global biodiversity gradient: energy, area, history and
... Arrhenius (1921), MacArthur and Wilson (1967), Terborgh (1973), and Rosenzweig (1995). The neutral theory explains explicitly how it exercises this influence: species richness should be proportional to the area of the metacommunity (Eq. (2)). This is defined as the distance over which a species can ...
... Arrhenius (1921), MacArthur and Wilson (1967), Terborgh (1973), and Rosenzweig (1995). The neutral theory explains explicitly how it exercises this influence: species richness should be proportional to the area of the metacommunity (Eq. (2)). This is defined as the distance over which a species can ...
Re-defining native woodland
... disturbance then community composition will bear little relation to the potential environmental climax of a site. This is certainly the case for woodland where the structure and composition of vegetation reflects a continuous process of response to and recovery from disturbance. Since trees are typi ...
... disturbance then community composition will bear little relation to the potential environmental climax of a site. This is certainly the case for woodland where the structure and composition of vegetation reflects a continuous process of response to and recovery from disturbance. Since trees are typi ...
Systematics
... There’s another way of figuring out relationships that tries to avoid this problem by using DNA or protein sequence data. As you may know, both DNA and proteins are huge molecules that are made up of strings of smaller subunits. A DNA molecule is a chain of nucleotides, and a protein molecule is a ...
... There’s another way of figuring out relationships that tries to avoid this problem by using DNA or protein sequence data. As you may know, both DNA and proteins are huge molecules that are made up of strings of smaller subunits. A DNA molecule is a chain of nucleotides, and a protein molecule is a ...
VERTEBRATES: FISH, AMPHIBIANS, REPTILES, BIRDS, MAMMALS
... and ponds that may contain water for days or weeks during a rainy period of the year, to permanent lakes that support diverse communities of fish and invertebrates. Generally, the hydroperiod gradient is seen as representing a trade-off for amphibians and other organisms that occupy lentic, freshwat ...
... and ponds that may contain water for days or weeks during a rainy period of the year, to permanent lakes that support diverse communities of fish and invertebrates. Generally, the hydroperiod gradient is seen as representing a trade-off for amphibians and other organisms that occupy lentic, freshwat ...
Evolutionary food web model based on body masses gives realistic
... as climate change and land use [5]. Even without human interference or other catastrophic causes, and apart from evolutionary suicide due to runaway selection [6], biological extinctions occur due to intrinsic processes, i.e., the dynamic trophic and competitive interactions among species [7, 8]. Th ...
... as climate change and land use [5]. Even without human interference or other catastrophic causes, and apart from evolutionary suicide due to runaway selection [6], biological extinctions occur due to intrinsic processes, i.e., the dynamic trophic and competitive interactions among species [7, 8]. Th ...
Feeding habits of Collembola and their ecological niche
... in the rainy seasons (Palacios-Vargas & Castaño-Meneses 2003), its abundance increased during the dry season, reaching 8% of the total number of springtails; this species also showed variation in dietary components. We were not able to identify any material in the gut of the species collected from b ...
... in the rainy seasons (Palacios-Vargas & Castaño-Meneses 2003), its abundance increased during the dry season, reaching 8% of the total number of springtails; this species also showed variation in dietary components. We were not able to identify any material in the gut of the species collected from b ...
Lichens - Corridor appalachien
... Pseudevernia cladonia, also called Ghost Antler, is a species of macrolichen found in the mountainous forests of the Appalachians, which are mostly constituted of spruce and fir. The Ghost Antler grows mainly on the branches of conifers and is easily recognizable thanks to its chalky white colour. I ...
... Pseudevernia cladonia, also called Ghost Antler, is a species of macrolichen found in the mountainous forests of the Appalachians, which are mostly constituted of spruce and fir. The Ghost Antler grows mainly on the branches of conifers and is easily recognizable thanks to its chalky white colour. I ...
Gough and Grace 1999
... and Armbruster 1991, Mitchell 1992). Using this method, Grace and Pugesek (1997) proposed both a general model whereby plant species density is controlled by abiotic conditions, disturbance, and plant biomass, and a specific version of the model for a Louisiana coastal wetland. They concluded that c ...
... and Armbruster 1991, Mitchell 1992). Using this method, Grace and Pugesek (1997) proposed both a general model whereby plant species density is controlled by abiotic conditions, disturbance, and plant biomass, and a specific version of the model for a Louisiana coastal wetland. They concluded that c ...
Important IB ESS Course Booklet
... rate. A natural increase rate of 1% will enable a human population to double in 70 years. Other doubling times can then be calculated proportionately, that is, the doubling time for any human population is equal to 70 divided by the natural increase rate. The area of land and water required to suppo ...
... rate. A natural increase rate of 1% will enable a human population to double in 70 years. Other doubling times can then be calculated proportionately, that is, the doubling time for any human population is equal to 70 divided by the natural increase rate. The area of land and water required to suppo ...
minimum group size and other conservation
... Examining the dynamics of naturally declining populations can be useful in understanding some of the problems encountered by endangered populations. A study of a declining population of vervet monkeys Cercopithecus aethiops provides a unique opportunity to examine factors associated with minimum soc ...
... Examining the dynamics of naturally declining populations can be useful in understanding some of the problems encountered by endangered populations. A study of a declining population of vervet monkeys Cercopithecus aethiops provides a unique opportunity to examine factors associated with minimum soc ...
Fundamentals of Ecology - University of West Florida
... space, and the interaction of organisms with other living things and their physical environment. This ecology course is intended for non-biology majors who have an interest in nature and their interaction with it. Although it is not a requirement of this course that you took biology or chemistry in ...
... space, and the interaction of organisms with other living things and their physical environment. This ecology course is intended for non-biology majors who have an interest in nature and their interaction with it. Although it is not a requirement of this course that you took biology or chemistry in ...
The Ethics of Reviving Long Extinct Species
... species extinctions involve a loss of value from the world. This is one of the primary reasons that anthropogenic extinctions are wrong and ought to be avoided (Soulé 1985; Rolston 1995; Cafaro 2001). Perhaps, deep de-extinction can restore value that was lost. If so, this may justify pursuing it. ...
... species extinctions involve a loss of value from the world. This is one of the primary reasons that anthropogenic extinctions are wrong and ought to be avoided (Soulé 1985; Rolston 1995; Cafaro 2001). Perhaps, deep de-extinction can restore value that was lost. If so, this may justify pursuing it. ...
The Ethics of Reviving Long Extinct Species
... species extinctions involve a loss of value from the world. This is one of the primary reasons that anthropogenic extinctions are wrong and ought to be avoided (Soulé 1985; Rolston 1995; Cafaro 2001). Perhaps, deep de-extinction can restore value that was lost. If so, this may justify pursuing it. ...
... species extinctions involve a loss of value from the world. This is one of the primary reasons that anthropogenic extinctions are wrong and ought to be avoided (Soulé 1985; Rolston 1995; Cafaro 2001). Perhaps, deep de-extinction can restore value that was lost. If so, this may justify pursuing it. ...
A Qualitative Model of Plant Growth Based on Exploitation of
... whereas in the middle pathway, growth is slower and resources actually reach high levels before the plant population is large enough to start suppressing them. However, each of these two pathways end in the same state (state 20), with resources low (i.e., equal to R*) and plant populations high. The ...
... whereas in the middle pathway, growth is slower and resources actually reach high levels before the plant population is large enough to start suppressing them. However, each of these two pathways end in the same state (state 20), with resources low (i.e., equal to R*) and plant populations high. The ...
Effect of segregation and genetic exchange on arbuscular
... experiment. A time course of fungal colonization would be more accurate in order to make conclusions about the potential effect of fungal colonization on plant growth (or vice versa) as, indeed, such interactions could change through time. Angelard et al. (2010) conducted two independent experiments ...
... experiment. A time course of fungal colonization would be more accurate in order to make conclusions about the potential effect of fungal colonization on plant growth (or vice versa) as, indeed, such interactions could change through time. Angelard et al. (2010) conducted two independent experiments ...
Species at Risk, Conservation Strategies, and Ecological Integrity
... However, we also want to save other species and develop a functional conservation network. Further, since some habitats have already been set aside in protected areas, these should be incorporated into the network, where possible, and added to in the most effective way (Nicholls and Margules 1993). ...
... However, we also want to save other species and develop a functional conservation network. Further, since some habitats have already been set aside in protected areas, these should be incorporated into the network, where possible, and added to in the most effective way (Nicholls and Margules 1993). ...
Community patterns in sandy beaches of Chile: richness
... The absence of correlation between beach length and species richness residuals was an unexpected result. It is widely known that islands support fewer species than continental areas of similar surface (MacArthur & Wilson 1967). Likewise, several studies on landscape ecology have found that patches l ...
... The absence of correlation between beach length and species richness residuals was an unexpected result. It is widely known that islands support fewer species than continental areas of similar surface (MacArthur & Wilson 1967). Likewise, several studies on landscape ecology have found that patches l ...
Protein and DNA Sequence Comparison
... How are E-values computed ? A local alignment without gaps consists simply of a pair of equal length segments, one from each of the two sequences being compared, whose scores can not be improved by extension or trimming. These are called high-scoring segment pairs or HSPs. Seq 1 Seq 2 ...
... How are E-values computed ? A local alignment without gaps consists simply of a pair of equal length segments, one from each of the two sequences being compared, whose scores can not be improved by extension or trimming. These are called high-scoring segment pairs or HSPs. Seq 1 Seq 2 ...
Chapter 18 Success factors in the establishment of human
... filters), or which of the organisms present in a region are likely to spread to other regions (the first through third filters). In the general view, particular characteristics of species or environments have usually been perceived as either promoting or inhibiting the invasion process as a whole, w ...
... filters), or which of the organisms present in a region are likely to spread to other regions (the first through third filters). In the general view, particular characteristics of species or environments have usually been perceived as either promoting or inhibiting the invasion process as a whole, w ...
Consortium for Educational Communication
... subsequent processes, such as predation, competition and mating. There are numerous examples of very interesting co-evolutionary relationships between various plant species and their dispersal vectors. Seed dispersal can contribute to species coexistence through tradeoffs between colonization abilit ...
... subsequent processes, such as predation, competition and mating. There are numerous examples of very interesting co-evolutionary relationships between various plant species and their dispersal vectors. Seed dispersal can contribute to species coexistence through tradeoffs between colonization abilit ...