chapter06_section03_edit (1)
... The Value of Biodiversity Biological diversity, or biodiversity, is the sum total of the genetically based variety of all organisms in the biosphere. Ecosystem diversity includes the variety of habitats, communities, and ecological processes in the living world. ...
... The Value of Biodiversity Biological diversity, or biodiversity, is the sum total of the genetically based variety of all organisms in the biosphere. Ecosystem diversity includes the variety of habitats, communities, and ecological processes in the living world. ...
Appendix 1
... 3) The losses of plant foliage, in terms of the percentage of leaf area or leaf biomass, consumed (or modified, as in the case of gallers) by herbivorous insects from three feeding guilds (defoliators, miners and gallers; separately or in combination), were measured from individual leaves of woody p ...
... 3) The losses of plant foliage, in terms of the percentage of leaf area or leaf biomass, consumed (or modified, as in the case of gallers) by herbivorous insects from three feeding guilds (defoliators, miners and gallers; separately or in combination), were measured from individual leaves of woody p ...
Ecological Risk Assessment of Genetically Modified Higher Plants
... In ecological risk assessment of transgenic plants, information on a wide range of subjects is needed for an effective and reliable assessment procedure. The information obtained from literature, field trials, laboratory and greenhouse tests have to be interpreted in a structured and well-defined ma ...
... In ecological risk assessment of transgenic plants, information on a wide range of subjects is needed for an effective and reliable assessment procedure. The information obtained from literature, field trials, laboratory and greenhouse tests have to be interpreted in a structured and well-defined ma ...
Feeding Selectivity and Habitat Usage of Esox americanus
... habitat usage of Esox americanus. By virtue of its fast progression to a piscivorous diet, it is potentially a strong regulator of fish assemblage composition in many small to midsized streams where it is often one of a few apex piscivores. Contrasting empirical data exists from field and experiment ...
... habitat usage of Esox americanus. By virtue of its fast progression to a piscivorous diet, it is potentially a strong regulator of fish assemblage composition in many small to midsized streams where it is often one of a few apex piscivores. Contrasting empirical data exists from field and experiment ...
Eradication of Rattus norvegicus from Seabird Habitat in Canada
... Corvus corax populations suffered through primary and secondary poisoning. Evidence of bait station tampering was seen with the advent of missing bait stations in areas of low R. norvegicus population. Brodifacoum residues were also found in other nontarget species, but not enough decline was seen i ...
... Corvus corax populations suffered through primary and secondary poisoning. Evidence of bait station tampering was seen with the advent of missing bait stations in areas of low R. norvegicus population. Brodifacoum residues were also found in other nontarget species, but not enough decline was seen i ...
Host ontogeny and the temporal decay of similarity in parasite
... per size class, for each of the three host species, are available in Supplementary Tables S1–3. In each of the three fish species, the parasite community was dominated by one or a few parasite species that had a more important influence on similarity values than other species. In C. guatucupa, the lar ...
... per size class, for each of the three host species, are available in Supplementary Tables S1–3. In each of the three fish species, the parasite community was dominated by one or a few parasite species that had a more important influence on similarity values than other species. In C. guatucupa, the lar ...
Litchman CV - Litchman-Klausmeier Lab
... Stomp M*, J Huisman, GG Mittelbach, E Litchman and CA Klausmeier. 2011. Large scale biodiversity gradients in freshwater phytoplankton. Ecology 92: 2096-2107. Highlighted in Science and Faculty of 1000. Edwards KF*, CA Klausmeier and E Litchman. 2011. Evidence for a three-way tradeoff between nitrog ...
... Stomp M*, J Huisman, GG Mittelbach, E Litchman and CA Klausmeier. 2011. Large scale biodiversity gradients in freshwater phytoplankton. Ecology 92: 2096-2107. Highlighted in Science and Faculty of 1000. Edwards KF*, CA Klausmeier and E Litchman. 2011. Evidence for a three-way tradeoff between nitrog ...
(climax community) is reached is called ecological succession
... * Each community modifies the environment, often making it more unfavorable for itself and more favorable for the following community. ...
... * Each community modifies the environment, often making it more unfavorable for itself and more favorable for the following community. ...
Warning Signal Brightness Variation: Sexual Selection May Work
... The aposematic strawberry poison frog Dendrobates (Oophaga) pumilio exhibits extreme warning color variation in the Bocas del Toro archipelago of Panama, with ∼15 distinct phenotypes represented across island and mainland populations (polytypism; Daly and Myers 1967; Siddiqi et al. 2004). Assortativ ...
... The aposematic strawberry poison frog Dendrobates (Oophaga) pumilio exhibits extreme warning color variation in the Bocas del Toro archipelago of Panama, with ∼15 distinct phenotypes represented across island and mainland populations (polytypism; Daly and Myers 1967; Siddiqi et al. 2004). Assortativ ...
The assembly and disassembly of ecological networks in a changing world
... species population dynamics are influenced by biotic interactions within the overall network. Moreover, certain features observed in the structure of ecological networks are responsible for the maintenance of stability and species persistence in different kinds of ecological communities. The next st ...
... species population dynamics are influenced by biotic interactions within the overall network. Moreover, certain features observed in the structure of ecological networks are responsible for the maintenance of stability and species persistence in different kinds of ecological communities. The next st ...
Adaptive Radiation, Ecological Opportunity, and Evolutionary
... is “ecological opportunity,” which Schluter (2000, p. 69) “loosely defined as a wealth of evolutionarily accessible resources little used by competing taxa.” It almost seems like a truism, but the idea is that in the presence of a variety of different types of available resources, a clade will diver ...
... is “ecological opportunity,” which Schluter (2000, p. 69) “loosely defined as a wealth of evolutionarily accessible resources little used by competing taxa.” It almost seems like a truism, but the idea is that in the presence of a variety of different types of available resources, a clade will diver ...
Benthic grazers and suspension feeders: Which one assumes the
... ABSTRACT: Size-frequency histograms of biomass, secondary production, respiration a n d energy flow of 4 dominant macrobenthic communities of the intertidal bay of K6nlgshafen were analysed and compared. In the shallow sandy fiats (Nereis-Corophium-belt [N.C.-belt], seagrass-bed and Arenicola-flat) ...
... ABSTRACT: Size-frequency histograms of biomass, secondary production, respiration a n d energy flow of 4 dominant macrobenthic communities of the intertidal bay of K6nlgshafen were analysed and compared. In the shallow sandy fiats (Nereis-Corophium-belt [N.C.-belt], seagrass-bed and Arenicola-flat) ...
The myriad consequences of hunting for vertebrates and plants in
... traits that make them easy to locate. These traits include frequent vocalization, travel in noisy social groups, and predictable return to salt licks, dens or fruiting trees. Preferred game species include ungulates and large primates throughout the tropics and large rodents (>1 kg) wherever they oc ...
... traits that make them easy to locate. These traits include frequent vocalization, travel in noisy social groups, and predictable return to salt licks, dens or fruiting trees. Preferred game species include ungulates and large primates throughout the tropics and large rodents (>1 kg) wherever they oc ...
Assemblage dynamics of exotic herpetofauna on Jupiter campus of
... 2004). Most of the exotic herpetofauna are lizards, 11 of these are exotic geckos and 8 are exotic anole species (Meshaka et al. 2004). The success of exotic herpetofauna in Florida is due partially to the ability to excel around human habitation. Most exotics are introduced in South Florida cities ...
... 2004). Most of the exotic herpetofauna are lizards, 11 of these are exotic geckos and 8 are exotic anole species (Meshaka et al. 2004). The success of exotic herpetofauna in Florida is due partially to the ability to excel around human habitation. Most exotics are introduced in South Florida cities ...
Wildlife Module - Forests Ontario
... agencies in Canada have an interest in reptiles, amphibians and small animals that are not used by humans nor are seen as pests, as well as being interested in traditional game species. In the past, wildlife management agencies were only concerned with game and vermin. However, game and vermin speci ...
... agencies in Canada have an interest in reptiles, amphibians and small animals that are not used by humans nor are seen as pests, as well as being interested in traditional game species. In the past, wildlife management agencies were only concerned with game and vermin. However, game and vermin speci ...
19Molles5e
... Includes major atmospheric pool - N2. Only nitrogen fixers can use atmospheric supply directly. Energy-demanding process. N2 reduced to ammonia (NH3). Once N is fixed it is available to organisms. Upon death of an organism, N can be released by fungi and bacteria during decomposition. ...
... Includes major atmospheric pool - N2. Only nitrogen fixers can use atmospheric supply directly. Energy-demanding process. N2 reduced to ammonia (NH3). Once N is fixed it is available to organisms. Upon death of an organism, N can be released by fungi and bacteria during decomposition. ...
View PDF - CiteSeerX
... studied in a grassland community of central Himalayan tarai region from April 1999 to March 2001. A total of 31 plant species were recorded in the grassland and mean aboveground net primary production was 2815 KJ m-2 yr-1. Fifty-nine insect species belonging 8 insect orders were recorded in the gras ...
... studied in a grassland community of central Himalayan tarai region from April 1999 to March 2001. A total of 31 plant species were recorded in the grassland and mean aboveground net primary production was 2815 KJ m-2 yr-1. Fifty-nine insect species belonging 8 insect orders were recorded in the gras ...
Biotic interactions and plant invasions
... (Parker et al. 1999). Empirical studies commonly focus on one of the many components of demographic success, including individual plant performance, local population density, local population growth rate, rate of spread at larger spatial scales and niche breadth or habitat use. Demographic success c ...
... (Parker et al. 1999). Empirical studies commonly focus on one of the many components of demographic success, including individual plant performance, local population density, local population growth rate, rate of spread at larger spatial scales and niche breadth or habitat use. Demographic success c ...
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.