MOOREA`S NEWEST INVASIVE SPECIES: THE DISTRIBUTION
... without early intervention can do irreparable damage to the ecosystems they invade. Oceanic islands have native flora and fauna that develop without much competition for resources, niches or habitats. As a result, invasive species often can outcompete natives. The recent introduction of Phelsuma lat ...
... without early intervention can do irreparable damage to the ecosystems they invade. Oceanic islands have native flora and fauna that develop without much competition for resources, niches or habitats. As a result, invasive species often can outcompete natives. The recent introduction of Phelsuma lat ...
Toward Synthesizing Artificial Neural Networks that Exhibit
... A trained network is then used to classify future inputs according to their similarity with the training sample. ...
... A trained network is then used to classify future inputs according to their similarity with the training sample. ...
AP Biology - Groch Biology
... 2. the Hardy-Weinberg equation and its use in determining the frequency of alleles in a population, and 3. the effects on allelic frequencies of selection against the homozygous recessive or other genotypes. After doing this lab you should be able to: 1. calculate the frequencies of alleles and geno ...
... 2. the Hardy-Weinberg equation and its use in determining the frequency of alleles in a population, and 3. the effects on allelic frequencies of selection against the homozygous recessive or other genotypes. After doing this lab you should be able to: 1. calculate the frequencies of alleles and geno ...
AP Biology
... 2. the Hardy-Weinberg equation and its use in determining the frequency of alleles in a population, and 3. the effects on allelic frequencies of selection against the homozygous recessive or other genotypes. After doing this lab you should be able to: 1. calculate the frequencies of alleles and geno ...
... 2. the Hardy-Weinberg equation and its use in determining the frequency of alleles in a population, and 3. the effects on allelic frequencies of selection against the homozygous recessive or other genotypes. After doing this lab you should be able to: 1. calculate the frequencies of alleles and geno ...
Seafarers or castaways: ecological traits associated with rafting
... even if the flotsam itself provides no resources. The ‘indicator-log’ hypothesis, for example, proposes that fishes are attracted to rafts because they originate in and remain within resource-rich areas (i.e. river mouth, mangrove swamps) or aggregate in frontal zones and convergences where plankton ...
... even if the flotsam itself provides no resources. The ‘indicator-log’ hypothesis, for example, proposes that fishes are attracted to rafts because they originate in and remain within resource-rich areas (i.e. river mouth, mangrove swamps) or aggregate in frontal zones and convergences where plankton ...
Bust economics: foragers choose high quality habitats in
... × 27 cm high (Appendix S2). Each room was equipped with a round 30 cm diameter tray, filled with one liter of sand, and each tray was set with a different density of live mealworms (Tenebrio molitor) that burrowed in the sand: low density (3 mealworms per tray), medium density (6 mealworms) or high ...
... × 27 cm high (Appendix S2). Each room was equipped with a round 30 cm diameter tray, filled with one liter of sand, and each tray was set with a different density of live mealworms (Tenebrio molitor) that burrowed in the sand: low density (3 mealworms per tray), medium density (6 mealworms) or high ...
A distance-based framework for measuring functional diversity from
... be considered when using that approach, but which Villéger et al. (2008) have not mentioned: what should we do if PCoA returns negative eigenvalues? Indeed, some distance matrices will not allow the distance relationships among the objects to be fully represented in a Euclidean space (Gower 1982). ...
... be considered when using that approach, but which Villéger et al. (2008) have not mentioned: what should we do if PCoA returns negative eigenvalues? Indeed, some distance matrices will not allow the distance relationships among the objects to be fully represented in a Euclidean space (Gower 1982). ...
5.2 Limits to Growth
... Density-Independent Limiting Factors Some limiting factors do not necessarily depend on population size. Density-independent limiting factors depend on population density, or the number of organisms per unit area. Examples include severe weather, natural disasters, and human activities. Some of thes ...
... Density-Independent Limiting Factors Some limiting factors do not necessarily depend on population size. Density-independent limiting factors depend on population density, or the number of organisms per unit area. Examples include severe weather, natural disasters, and human activities. Some of thes ...
Lien/PDF - Laboratoire de lutte biologique (Éric Lucas)
... Agustı́, 1988; Perdikis and Lykouressis, 2000). All the results concerning nymphs (low mortality, short development time) and adults (low mortality, high weight) were homogeneous and demonstrated higher performances with animal than with plant resources. Our study confirms previous results showing t ...
... Agustı́, 1988; Perdikis and Lykouressis, 2000). All the results concerning nymphs (low mortality, short development time) and adults (low mortality, high weight) were homogeneous and demonstrated higher performances with animal than with plant resources. Our study confirms previous results showing t ...
Bergmann`s rule and the mammal fauna of northern North America
... can be considered biological. The dispersal hypothesis (3) suggests that small-bodied species are under-represented in certain areas because they have failed to disperse there as often as have large-bodied species in the period since these areas became habitable. The heat conservation hypothesis (4) ...
... can be considered biological. The dispersal hypothesis (3) suggests that small-bodied species are under-represented in certain areas because they have failed to disperse there as often as have large-bodied species in the period since these areas became habitable. The heat conservation hypothesis (4) ...
Biodiversity and the functioning of seagrass ecosystems
... ecosystems. Several themes emerge from a review of the mostly indirect evidence and the few experiments that explicitly manipulated diversity in seagrass systems. First, because many seagrass communities are dominated by 1 or a few plant species, genetic and phenotypic diversity within such foundati ...
... ecosystems. Several themes emerge from a review of the mostly indirect evidence and the few experiments that explicitly manipulated diversity in seagrass systems. First, because many seagrass communities are dominated by 1 or a few plant species, genetic and phenotypic diversity within such foundati ...
Ecological Inventory of Queensborough, City of New Westminster
... Other areas of natural or semi‐natural vegetation were typically small and often isolated from other habitats. Higher ecological value was given to areas that had contiguous natural cover, as they provided a corridor for movement of species, and potentially a buffer from more developed areas. The ...
... Other areas of natural or semi‐natural vegetation were typically small and often isolated from other habitats. Higher ecological value was given to areas that had contiguous natural cover, as they provided a corridor for movement of species, and potentially a buffer from more developed areas. The ...
(Pilosa, Myrmecophagidae) REGARDING THE TERMITE DEFENSE
... for either. However, on average, they spent more time feeding on termites with a mixed defense mechanism and a hard nest (Cornitermes), than on those with only a chemical defense mechanism and a soft nest (Nasutitermes). Termite individuals have low nutritional value, except for the reproductive cas ...
... for either. However, on average, they spent more time feeding on termites with a mixed defense mechanism and a hard nest (Cornitermes), than on those with only a chemical defense mechanism and a soft nest (Nasutitermes). Termite individuals have low nutritional value, except for the reproductive cas ...
Evolution through natural selection
... Let us look a little more closely at the three necessary and sufficient conditions and consider how likely it is that they will be met. The first, a struggle for existence, is probably almost always met, because living organisms produce more progeny than are required to replace their parents when th ...
... Let us look a little more closely at the three necessary and sufficient conditions and consider how likely it is that they will be met. The first, a struggle for existence, is probably almost always met, because living organisms produce more progeny than are required to replace their parents when th ...
Functional and phylogenetic diversity of woody plants drive
... axis (PC1abio), which represented stand age and age-dependent aspects of stand structure and biomass, was related to herbivore damage (Schuldt et al., 2010), and therefore was included in our analyses to account for diversity-independent plot effects. Other plot characteristics, as well as sapling h ...
... axis (PC1abio), which represented stand age and age-dependent aspects of stand structure and biomass, was related to herbivore damage (Schuldt et al., 2010), and therefore was included in our analyses to account for diversity-independent plot effects. Other plot characteristics, as well as sapling h ...
Word - Learnz
... The Antarctic Food Web Plankton form the basis for the Antarctic food web. These are marine and freshwater organisms that, because they are non-motile or too small or weak to swim against the current, exist in a drifting state in the water they live in. The term plankton is a collective name for all ...
... The Antarctic Food Web Plankton form the basis for the Antarctic food web. These are marine and freshwater organisms that, because they are non-motile or too small or weak to swim against the current, exist in a drifting state in the water they live in. The term plankton is a collective name for all ...
Effects of short-term warming on low and high latitude forest ant
... climatic change than those at high latitudes, ecological communities at low latitudes could be more resilient to environmental change because they are generally more diverse (Wittebolle et al. 2009). Yet, because most experimental studies of the effects of warming have been conducted at single sites ...
... climatic change than those at high latitudes, ecological communities at low latitudes could be more resilient to environmental change because they are generally more diverse (Wittebolle et al. 2009). Yet, because most experimental studies of the effects of warming have been conducted at single sites ...
Ecological succession as an energy dispersal process
... is defined by the logarithm of the energy densities. The chemical potential j denotes the energy content of the j-population and k that of the k-population. The potential difference is a convenient way to relate diverse repositories of energy, i.e., populations to each other to deduce directions of ...
... is defined by the logarithm of the energy densities. The chemical potential j denotes the energy content of the j-population and k that of the k-population. The potential difference is a convenient way to relate diverse repositories of energy, i.e., populations to each other to deduce directions of ...
Theoretical ecology
Theoretical ecology is the scientific discipline devoted to the study of ecological systems using theoretical methods such as simple conceptual models, mathematical models, computational simulations, and advanced data analysis. Effective models improve understanding of the natural world by revealing how the dynamics of species populations are often based on fundamental biological conditions and processes. Further, the field aims to unify a diverse range of empirical observations by assuming that common, mechanistic processes generate observable phenomena across species and ecological environments. Based on biologically realistic assumptions, theoretical ecologists are able to uncover novel, non-intuitive insights about natural processes. Theoretical results are often verified by empirical and observational studies, revealing the power of theoretical methods in both predicting and understanding the noisy, diverse biological world.The field is broad and includes foundations in applied mathematics, computer science, biology, statistical physics, genetics, chemistry, evolution, and conservation biology. Theoretical ecology aims to explain a diverse range of phenomena in the life sciences, such as population growth and dynamics, fisheries, competition, evolutionary theory, epidemiology, animal behavior and group dynamics, food webs, ecosystems, spatial ecology, and the effects of climate change.Theoretical ecology has further benefited from the advent of fast computing power, allowing the analysis and visualization of large-scale computational simulations of ecological phenomena. Importantly, these modern tools provide quantitative predictions about the effects of human induced environmental change on a diverse variety of ecological phenomena, such as: species invasions, climate change, the effect of fishing and hunting on food network stability, and the global carbon cycle.