Ecology Unit
... All organisms have the abilities to grow and reproduce, properties which require materials and energy from the environment. The organism’s environment includes physical properties (abiotic factors), such as sunlight, climate, soil, water and air, and biological properties (biotic factors), which are ...
... All organisms have the abilities to grow and reproduce, properties which require materials and energy from the environment. The organism’s environment includes physical properties (abiotic factors), such as sunlight, climate, soil, water and air, and biological properties (biotic factors), which are ...
Sustaining Biodiversity: The Ecosystem Approach
... hotspots is an urgent priority • Some biodiversity scientists urge adoption of an emergency action strategy to identify and quickly protect biodiversity hotspots, areas especially rich in plant species that are found nowhere else and are in great danger of extinction . • These hotspots cover only a ...
... hotspots is an urgent priority • Some biodiversity scientists urge adoption of an emergency action strategy to identify and quickly protect biodiversity hotspots, areas especially rich in plant species that are found nowhere else and are in great danger of extinction . • These hotspots cover only a ...
Title: Fine-scale and Microhabitat Factors Influencing Terrestrial
... Woods, a forest in the Cumberland Plateau-region of south-eastern Kentucky, containing several mixed mesophytic old growth stands. Owing to its rich amphibian diversity, lack of anthropogenic disturbance, and heterogeneous landscape and vegetative structure, Lilley Cornett Woods serves as an exempla ...
... Woods, a forest in the Cumberland Plateau-region of south-eastern Kentucky, containing several mixed mesophytic old growth stands. Owing to its rich amphibian diversity, lack of anthropogenic disturbance, and heterogeneous landscape and vegetative structure, Lilley Cornett Woods serves as an exempla ...
Adaptations to life on land
... • K-selected traits (favored at high density) – Slow growth, delayed reproduction – Density dependent populations ...
... • K-selected traits (favored at high density) – Slow growth, delayed reproduction – Density dependent populations ...
Lesson 5: Population structure and plant
... Carrying capacities are rarely constant. They vary with environmental conditions. Birth and death rates are not constant. Therefore, r is not constant. Biomass of plants may have more impact on the carrying capacity than the number of individuals. Population boundaries are usually poorly defined. ...
... Carrying capacities are rarely constant. They vary with environmental conditions. Birth and death rates are not constant. Therefore, r is not constant. Biomass of plants may have more impact on the carrying capacity than the number of individuals. Population boundaries are usually poorly defined. ...
Blog resource: http://tinyurl
... ''........can we doubt (remembering that many more individuals are born than can possible survive) that individuals having any advantage, however slight, over others, would have the best chance of surviving and procreating their kind? On the other hand, we may feel sure that any variation in the lea ...
... ''........can we doubt (remembering that many more individuals are born than can possible survive) that individuals having any advantage, however slight, over others, would have the best chance of surviving and procreating their kind? On the other hand, we may feel sure that any variation in the lea ...
printable version
... animals, especially birds, is desirable. Applicants should also be highly motivated and well organised, with capabilities of working both in a group and independently. Work will be 5-6 days per week starting early in the morning and potentially continuing into the evening. The working language at th ...
... animals, especially birds, is desirable. Applicants should also be highly motivated and well organised, with capabilities of working both in a group and independently. Work will be 5-6 days per week starting early in the morning and potentially continuing into the evening. The working language at th ...
Conservation of Matter & Energy
... tagged, released. 9 elephants caught second time, 6 were tagged. ...
... tagged, released. 9 elephants caught second time, 6 were tagged. ...
Abstract - BIT Mesra
... (Golpata) providing perfect camouflage for the tigers, teach the tourists about Nature's determination to survive and sustain. The pre-historic Mudskipper or many species of crabs, fish and oysters/mollusks can make the visitors enthralled. And a nature's trail at Burir dabri camp, glorious Sunrise ...
... (Golpata) providing perfect camouflage for the tigers, teach the tourists about Nature's determination to survive and sustain. The pre-historic Mudskipper or many species of crabs, fish and oysters/mollusks can make the visitors enthralled. And a nature's trail at Burir dabri camp, glorious Sunrise ...
EnvScisamplebooktestChp13Questions
... a) Population risk b) Genetic risk c) Human induced risk d) Environmental risk e) A natural risk 18. Much of the information we have concerning the abundance of grizzly bears in North America prior to the western expansion of European communities comes from: a) fossil evidence b) the journals of Lew ...
... a) Population risk b) Genetic risk c) Human induced risk d) Environmental risk e) A natural risk 18. Much of the information we have concerning the abundance of grizzly bears in North America prior to the western expansion of European communities comes from: a) fossil evidence b) the journals of Lew ...
Diversity, invasive species and extinctions in insular ecosystems
... Comparative methods are important tools in conservation biology, and the techniques are particularly useful for searching for mechanisms that underlie patterns of extinction risk (Terborgh 1974; Wilson & Willis 1975). Comparative methods also often hope to inform on-the-ground conservation planning ...
... Comparative methods are important tools in conservation biology, and the techniques are particularly useful for searching for mechanisms that underlie patterns of extinction risk (Terborgh 1974; Wilson & Willis 1975). Comparative methods also often hope to inform on-the-ground conservation planning ...
Simple prediction of interaction strengths in complex food webs
... governed by simple allometric scaling rules (1, 18, 19). We explore two general questions: (i) How are per capita pair-wise rules modified by network dynamics? (ii) Is there a simple predictor of the dynamic effect of removing a species on the other species in a network governed by allometric scalin ...
... governed by simple allometric scaling rules (1, 18, 19). We explore two general questions: (i) How are per capita pair-wise rules modified by network dynamics? (ii) Is there a simple predictor of the dynamic effect of removing a species on the other species in a network governed by allometric scalin ...
research report
... on vital ecosystem services provides us practical reasons for preserving biodiversity. The world’s natural ecosystems are rapidly disappearing. Nearly half of the world’s forests are gone, and thousands more square kilometers disappear every year. Aquatic ecosystems are also threatened ...
... on vital ecosystem services provides us practical reasons for preserving biodiversity. The world’s natural ecosystems are rapidly disappearing. Nearly half of the world’s forests are gone, and thousands more square kilometers disappear every year. Aquatic ecosystems are also threatened ...
Document
... Viral and Fungal diseases. Overhunting. Natural immigration or deliberate introduction of nonnative predators and competitors. ...
... Viral and Fungal diseases. Overhunting. Natural immigration or deliberate introduction of nonnative predators and competitors. ...
natural selection
... He inferred everything about it from his careful observations from nature. Darwin's theory of descent with modification was accepted by most scientists worldwide within ten years of its publication in 1859. However, his theory of natural selection was widely criticized, and by the turn of the 20th c ...
... He inferred everything about it from his careful observations from nature. Darwin's theory of descent with modification was accepted by most scientists worldwide within ten years of its publication in 1859. However, his theory of natural selection was widely criticized, and by the turn of the 20th c ...
Biodiversity:
... Organisms introduced into habitats where they are not native are termed as exotics. They can be thought of as Biological Pollutants and are considered to be among the most damaging agents of habitat alteration and degradation the world. Climate change: A changing global climate threatens speci ...
... Organisms introduced into habitats where they are not native are termed as exotics. They can be thought of as Biological Pollutants and are considered to be among the most damaging agents of habitat alteration and degradation the world. Climate change: A changing global climate threatens speci ...
Warm up # 21
... 3) Which of the fish are most likely to reach adulthood and reproduce? 4) What does the word “evolution” mean? ...
... 3) Which of the fish are most likely to reach adulthood and reproduce? 4) What does the word “evolution” mean? ...
Plant of the Day
... – Used empirical data (trees from different organism groups) and tested five different statistical models for the frequency distribution of branch lengths – Result: Best fit is to the simplest model of evolution, the exponential model, in which new species emerge from single events — each event bein ...
... – Used empirical data (trees from different organism groups) and tested five different statistical models for the frequency distribution of branch lengths – Result: Best fit is to the simplest model of evolution, the exponential model, in which new species emerge from single events — each event bein ...
European Commission
... better policy making on this difficult issue." Alien species – non-native organisms that become established in a new environment – are on the increase worldwide. Most of them do not present significant risks for their new environment. However, some of them adapt so successfully to the new environmen ...
... better policy making on this difficult issue." Alien species – non-native organisms that become established in a new environment – are on the increase worldwide. Most of them do not present significant risks for their new environment. However, some of them adapt so successfully to the new environmen ...
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.