Are planthopper problems caused by a breakdown in ecosystem
... Based on research results, both experimental and field, and related literature, it is evident that planthopper outbreaks are secondary pest problems because of the deterioration of important ecosystem services, such as natural biological control and invasion resistance. These services can be affecte ...
... Based on research results, both experimental and field, and related literature, it is evident that planthopper outbreaks are secondary pest problems because of the deterioration of important ecosystem services, such as natural biological control and invasion resistance. These services can be affecte ...
Niche versus chance and tree diversity in forest gaps
... similarity among others 3. Nonetheless, given the overall species behaving individualistically3. array, plus other possible axes of variation in adaptations The death of an adult tree creates a forest gap in which and gap environments, the scope for niche partitioning along gap—understory gradients ...
... similarity among others 3. Nonetheless, given the overall species behaving individualistically3. array, plus other possible axes of variation in adaptations The death of an adult tree creates a forest gap in which and gap environments, the scope for niche partitioning along gap—understory gradients ...
What Is Evolution? - Princeton University Press
... phylogeny, and from study of the process of evolutionary change, particularly the effect of natural selection. It is now apparent that when selection is strong, evolution can proceed considerably more rapidly than was generally envisioned by Darwin. As a result, scientists are realizing that it is p ...
... phylogeny, and from study of the process of evolutionary change, particularly the effect of natural selection. It is now apparent that when selection is strong, evolution can proceed considerably more rapidly than was generally envisioned by Darwin. As a result, scientists are realizing that it is p ...
Carrying Capacity and Ecological Economics (PDF
... to technological progress.”10 Economists following Solow have adopted a standard model of growth that contains only two factors: knowledge and the labor to apply it. This model differs from the classical models of Robert T. Malthus and David Ricardo11 because “[natural] resources, the third member o ...
... to technological progress.”10 Economists following Solow have adopted a standard model of growth that contains only two factors: knowledge and the labor to apply it. This model differs from the classical models of Robert T. Malthus and David Ricardo11 because “[natural] resources, the third member o ...
- Wiley Online Library
... [15]. In the present study, therefore, we consider the combined effects of GCC and toxicants at the population and community levels (Fig. 1). The ultimate aim is to provide support for improved ERA [16] and ecosystems restoration [17] under GCC. The combination of toxicant stress with other environm ...
... [15]. In the present study, therefore, we consider the combined effects of GCC and toxicants at the population and community levels (Fig. 1). The ultimate aim is to provide support for improved ERA [16] and ecosystems restoration [17] under GCC. The combination of toxicant stress with other environm ...
Jepsen Breeding J Ornithology 157
... received much attention in the scientific literature, particularly with respect to climate change and its implications for vulnerable species (e.g., Chen et al. 2011; McClure et al. 2012). Physical factors (e.g., climate) are recognised as being the principal drivers of species ranges at regional an ...
... received much attention in the scientific literature, particularly with respect to climate change and its implications for vulnerable species (e.g., Chen et al. 2011; McClure et al. 2012). Physical factors (e.g., climate) are recognised as being the principal drivers of species ranges at regional an ...
assessment
... Burrows of both sexes may be located on the old limestone reef-tract or in sandy areas adjacent to it. If available, iguanas will use additional holes or crevices as emergency retreats. Whereas degraded vegetation may provide for male subsistence, it may not provide females with sufficient energy to ...
... Burrows of both sexes may be located on the old limestone reef-tract or in sandy areas adjacent to it. If available, iguanas will use additional holes or crevices as emergency retreats. Whereas degraded vegetation may provide for male subsistence, it may not provide females with sufficient energy to ...
Beavers and biodiversity: the ethics of ecological restoration
... distinction between human artifacts (e.g., restored ecosystems) and natural entities. We should understand “that there is a realm of value with which we should not interfere. . . We cannot be the masters of nature, molding nature to our wishes and desires, without destroying the value of nature” (ib ...
... distinction between human artifacts (e.g., restored ecosystems) and natural entities. We should understand “that there is a realm of value with which we should not interfere. . . We cannot be the masters of nature, molding nature to our wishes and desires, without destroying the value of nature” (ib ...
Resiliência, Incerteza e Gestão de Sistemas Socioecológicos
... change and industrial development, we have been grappling with the question of whether fundamental change is possible without a major collapse. What has your experience studying system change told you about this question? I think the key is to look for windows of opportunity for change. Such windows ...
... change and industrial development, we have been grappling with the question of whether fundamental change is possible without a major collapse. What has your experience studying system change told you about this question? I think the key is to look for windows of opportunity for change. Such windows ...
thesis12.11 - Academic Commons
... support lower avian species diversity and total population density when compared to native pinelands and forest-edge habitats (Curnutt 1989). Schinus forest habitats in Everglades National Park host few native and many non-indigenous species, such as Cuban tree frogs (Osteopilus septentrionallis) an ...
... support lower avian species diversity and total population density when compared to native pinelands and forest-edge habitats (Curnutt 1989). Schinus forest habitats in Everglades National Park host few native and many non-indigenous species, such as Cuban tree frogs (Osteopilus septentrionallis) an ...
Unit 10
... • Minimum Viable Population (MVP) and Population Viability Analysis (PVA) use extensive field data to predict best management practices for a particular species in conservation biology. • Double bar graph population pyramids show proportions of males and females within age groups. • Population pyrami ...
... • Minimum Viable Population (MVP) and Population Viability Analysis (PVA) use extensive field data to predict best management practices for a particular species in conservation biology. • Double bar graph population pyramids show proportions of males and females within age groups. • Population pyrami ...
3rd Grade BIOLOGY ECOLOGY UNIT SAND DUNE SUCCESSION
... strand line and collect where there is calm air behind it. Over time, A small embryo dune is formed, which may become vegetated by sea couch grass and/or marram grass. This dune can be easily destroyed unless it is colonised by these pioneer plant species. When pioneer plant species move into an are ...
... strand line and collect where there is calm air behind it. Over time, A small embryo dune is formed, which may become vegetated by sea couch grass and/or marram grass. This dune can be easily destroyed unless it is colonised by these pioneer plant species. When pioneer plant species move into an are ...
Ecological Succession
... Succession in a Microhabitat A very simple way would be to take a small sample of soil using a graduated cylinder (or a beaker). Add water to the sample and swirl the cylinder to mix the soil and water. Left to settle, the sample will separate and the organic matter will float to the surface. Use t ...
... Succession in a Microhabitat A very simple way would be to take a small sample of soil using a graduated cylinder (or a beaker). Add water to the sample and swirl the cylinder to mix the soil and water. Left to settle, the sample will separate and the organic matter will float to the surface. Use t ...
DNA intergenic spacer length, growth rate, and C:N:P stoichiometry
... grown at low (atomic) N : P ratio (;17 : 1) at high growth rate and thus has low (atomic) C : P (;140) and (atomic) N : P (;20) ratios (Kilham et al. 1998). Previous studies (e.g., Sterner 1993) have indicated that this alga grown under these culture conditions can support rapid Daphnia growth. Medi ...
... grown at low (atomic) N : P ratio (;17 : 1) at high growth rate and thus has low (atomic) C : P (;140) and (atomic) N : P (;20) ratios (Kilham et al. 1998). Previous studies (e.g., Sterner 1993) have indicated that this alga grown under these culture conditions can support rapid Daphnia growth. Medi ...
Competition among native and invasive Impatiens species: the roles
... depends on abundances. To explore the importance of these factors, we examined competition effects in an experiment with three Impatiens species (Balsaminaceae) widespread in central Europe and sharing similar life-history characteristics and habitats: the native I. noli-tangere, and two invasive sp ...
... depends on abundances. To explore the importance of these factors, we examined competition effects in an experiment with three Impatiens species (Balsaminaceae) widespread in central Europe and sharing similar life-history characteristics and habitats: the native I. noli-tangere, and two invasive sp ...
Ecological Succession - Galena Park ISD Moodle
... Succession in a Microhabitat A very simple way would be to take a small sample of soil using a graduated cylinder (or a beaker). Add water to the sample and swirl the cylinder to mix the soil and water. Left to settle, the sample will separate and the organic matter will float to the surface. Use t ...
... Succession in a Microhabitat A very simple way would be to take a small sample of soil using a graduated cylinder (or a beaker). Add water to the sample and swirl the cylinder to mix the soil and water. Left to settle, the sample will separate and the organic matter will float to the surface. Use t ...
AP Bio Syllabus 2013-2014
... quickly and in much more detail than in your lower-level biology courses. Excessive absences for whatever reason – illness, athletic competitions, doctor’s appointments, etc. – will jeopardize your chances of success in the course. If absences have been a problem for you in the past and you expect t ...
... quickly and in much more detail than in your lower-level biology courses. Excessive absences for whatever reason – illness, athletic competitions, doctor’s appointments, etc. – will jeopardize your chances of success in the course. If absences have been a problem for you in the past and you expect t ...
AP Biology
... and in much more detail than in your lower-level biology courses. Excessive absences for whatever reason – illness, athletic competitions, doctor’s appointments, etc. – will jeopardize your chances of success in the course. If absences have been a problem for you in the past and you expect them to c ...
... and in much more detail than in your lower-level biology courses. Excessive absences for whatever reason – illness, athletic competitions, doctor’s appointments, etc. – will jeopardize your chances of success in the course. If absences have been a problem for you in the past and you expect them to c ...
Interactions of multiple predators with different foraging modes in an
... if predator species are substitutable in that interspecific interactions are similar to intraspecific interactions (Schmitz 2007). The outcome for a shared prey to multiple predators is also influenced by the foraging mode of the predators and habitat use of both predators and prey (Schmitz 2007). W ...
... if predator species are substitutable in that interspecific interactions are similar to intraspecific interactions (Schmitz 2007). The outcome for a shared prey to multiple predators is also influenced by the foraging mode of the predators and habitat use of both predators and prey (Schmitz 2007). W ...
The Ethics of Reviving Long Extinct Species
... performing ecosystem functions); instrumental values to people (e.g., providing ecosystem services); and intrinsic value (or final value) in themselves or for what they are (e.g., as distinctive forms of life) (Rolston 1986, 2003; Callicott 1989; Hunter 2001; Sandler 2012). As a result, species exti ...
... performing ecosystem functions); instrumental values to people (e.g., providing ecosystem services); and intrinsic value (or final value) in themselves or for what they are (e.g., as distinctive forms of life) (Rolston 1986, 2003; Callicott 1989; Hunter 2001; Sandler 2012). As a result, species exti ...
Ch. 53 Notes - Dublin Schools
... paramecia and daphnia fits an S-shaped curve. • These organisms are grown in a constant environment lacking predators and competitors ...
... paramecia and daphnia fits an S-shaped curve. • These organisms are grown in a constant environment lacking predators and competitors ...
Symbiosis Activity
... 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: ( - is negative, 0 is neutral and + is positive) 1. Amensalism ( ...
... 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: ( - is negative, 0 is neutral and + is positive) 1. Amensalism ( ...
1091-Lec19(ReintroP)
... extinct in the last 200 yrs Mammals 25 species extinct 10 species only on islands 17 species in remnant habitat 10% of their pre-European range ...
... extinct in the last 200 yrs Mammals 25 species extinct 10 species only on islands 17 species in remnant habitat 10% of their pre-European range ...
Overview of Ecological Responses to the Eruption of Mount St. Helens
... arboreal rodents, perished in the blast area. Amphibians associated with water had higher survival rates than did entirely ...
... arboreal rodents, perished in the blast area. Amphibians associated with water had higher survival rates than did entirely ...
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.