Document
... The difference between the birth rate and the death rate is the per capita growth rate r=b-d The growth equation can be rewritten as ∆N = rN or dN = rN ∆t dt Exponential growth occurs when resources are unlimited and the population is small (doesn’t happen often). The r is maximal (rmax) and it is c ...
... The difference between the birth rate and the death rate is the per capita growth rate r=b-d The growth equation can be rewritten as ∆N = rN or dN = rN ∆t dt Exponential growth occurs when resources are unlimited and the population is small (doesn’t happen often). The r is maximal (rmax) and it is c ...
Mechanistic theory and modelling of complex food‐web dynamics in
... Five ATN model variants (M0–M4) from very generalisable to more complex and specific to LC were built: The most basic, M0, is relatively standard (i.e. fm = fa = 1) with allometrically derived values of ri or xi for all guilds (Brose et al. 2006; Williams 2008) that are easily generalisable to many ...
... Five ATN model variants (M0–M4) from very generalisable to more complex and specific to LC were built: The most basic, M0, is relatively standard (i.e. fm = fa = 1) with allometrically derived values of ri or xi for all guilds (Brose et al. 2006; Williams 2008) that are easily generalisable to many ...
Principles of population viability analysis (PVA)
... and mortality (often termed the vital rates), and predicting how these rates vary under a range of environmental conditions is at the heart of PVA. Poor estimates of vital rates lead to poor PVA. For most listed threatened species, estimates of vital rates are published in the literature. Nonetheles ...
... and mortality (often termed the vital rates), and predicting how these rates vary under a range of environmental conditions is at the heart of PVA. Poor estimates of vital rates lead to poor PVA. For most listed threatened species, estimates of vital rates are published in the literature. Nonetheles ...
Doncaster et al 2000 paper - Department of Zoology, University of
... Fruits were collected from three trees in Bloomington with large crops. Fruit flesh was removed, and seeds were surface sterilized (1 min 70% alcohol, 3 min 50% bleach, 1 min 70% alcohol, 1 min distilled water). To break dormancy, seeds were stratified in wet sterile sand at 4 8C for 5–6 months. Soi ...
... Fruits were collected from three trees in Bloomington with large crops. Fruit flesh was removed, and seeds were surface sterilized (1 min 70% alcohol, 3 min 50% bleach, 1 min 70% alcohol, 1 min distilled water). To break dormancy, seeds were stratified in wet sterile sand at 4 8C for 5–6 months. Soi ...
If the producers in an ecosystem capture 1000 units of energy, how
... Nitrogen Cycle = process where nitrogen (N) is cycled b/w atmosphere, bacteria, & other organisms ❧ All organisms need N for proteins & nucleic acids ...
... Nitrogen Cycle = process where nitrogen (N) is cycled b/w atmosphere, bacteria, & other organisms ❧ All organisms need N for proteins & nucleic acids ...
Bay Area Ecosystems
... invertebrates, fish, and shorebirds. Salt ponds These are not a natural ecosystem in the Bay Area, but it is one that takes up a lot of space. Salt ponds are where salt is commercially extracted from bay water. While these may seem to be unforgiving and uninviting habitat, they are actually thriving ...
... invertebrates, fish, and shorebirds. Salt ponds These are not a natural ecosystem in the Bay Area, but it is one that takes up a lot of space. Salt ponds are where salt is commercially extracted from bay water. While these may seem to be unforgiving and uninviting habitat, they are actually thriving ...
Diversifying on the Islands
... unlike those anywhere else. For these reasons, islands provide valuable insights into speciation and adaptive radiation. ...
... unlike those anywhere else. For these reasons, islands provide valuable insights into speciation and adaptive radiation. ...
Ecosystems Notes
... Organisms may use energy from the sun in two different ways: 1. directly (autotrophs or producers – _______________________________________________________________________) 2. indirectly (heterotrophs or consumers – __________________________________________________________________) ...
... Organisms may use energy from the sun in two different ways: 1. directly (autotrophs or producers – _______________________________________________________________________) 2. indirectly (heterotrophs or consumers – __________________________________________________________________) ...
Meta-ecosystems: a theoretical framework for a spatial ecosystem
... nutrient N) and two local ecosystems 1 and 2, it is easy to verify that these constraints result in a global material cycle such that net flows at equilibrium are either in the direction N1 fi P1 fi P2 fi N2 fi N1 or in the opposite direction. In this global cycle, although production and nutrient recyc ...
... nutrient N) and two local ecosystems 1 and 2, it is easy to verify that these constraints result in a global material cycle such that net flows at equilibrium are either in the direction N1 fi P1 fi P2 fi N2 fi N1 or in the opposite direction. In this global cycle, although production and nutrient recyc ...
Ecological Succession Ecosystems are constantly changing in
... further changes in the community. This series of predictable changes that occurs in a community over time is called ecological succession. Ecological succession is slow and gradual; it occurs over a period of many years. As ecological succession occurs, types of species present in a community will c ...
... further changes in the community. This series of predictable changes that occurs in a community over time is called ecological succession. Ecological succession is slow and gradual; it occurs over a period of many years. As ecological succession occurs, types of species present in a community will c ...
The Biosphere Chapter 58
... species can occupy the same niche indefinitely when resources are limiting • Species may divide up the resources, this is called resource partitioning • Gause found this occurring with two of his Paramecium species ...
... species can occupy the same niche indefinitely when resources are limiting • Species may divide up the resources, this is called resource partitioning • Gause found this occurring with two of his Paramecium species ...
Unit 1—Key Concepts - Oregon State University
... Course Web Site: On OSU Blackboard System Course Description: Ecological anthropology examines the relationship between humans and their environments. This course has two primary aims: 1) to provide a foundation of knowledge about past and present theoretical perspectives in ecological anthropology; ...
... Course Web Site: On OSU Blackboard System Course Description: Ecological anthropology examines the relationship between humans and their environments. This course has two primary aims: 1) to provide a foundation of knowledge about past and present theoretical perspectives in ecological anthropology; ...
Do penguins play leap-frog? Niche partitioning in Adélie and
... and this, in combination with phase-dependant variability in foraging trip duration, can lead to spatiotemporal segregation of species by foraging areas. This causes birds to “leap-frog” one another in time and space to exploit distinct spatial niches as the season progresses. Seabird phenology is s ...
... and this, in combination with phase-dependant variability in foraging trip duration, can lead to spatiotemporal segregation of species by foraging areas. This causes birds to “leap-frog” one another in time and space to exploit distinct spatial niches as the season progresses. Seabird phenology is s ...
Ecosystems - GeoScience
... Write down these questions and leave 1 line for the answers. 1. How much rain falls in the Amazon rain forest per year? Convert that to feet. (1 meter = 3.3 feet) 2. How much of the rain fall comes from the trees themselves? Describe how the water cycle does this. 3. The rainforest floor thrives on ...
... Write down these questions and leave 1 line for the answers. 1. How much rain falls in the Amazon rain forest per year? Convert that to feet. (1 meter = 3.3 feet) 2. How much of the rain fall comes from the trees themselves? Describe how the water cycle does this. 3. The rainforest floor thrives on ...
PDF - Lake Forest College
... DC, delves into species survival and extinction. He is the author of scientific publications and articles on conservation biology and endangered species. In this book, Wilcove describes how species survival is dependent on other species, and he also provides readers with examples of how habitat dest ...
... DC, delves into species survival and extinction. He is the author of scientific publications and articles on conservation biology and endangered species. In this book, Wilcove describes how species survival is dependent on other species, and he also provides readers with examples of how habitat dest ...
Slide 1
... life, such as water, nutrients, light, food, or space. Habitat + Resources = ????? • The ecological niche – Is the total of an organism’s use of the biotic and abiotic resources in its environment ...
... life, such as water, nutrients, light, food, or space. Habitat + Resources = ????? • The ecological niche – Is the total of an organism’s use of the biotic and abiotic resources in its environment ...
Slide 1
... – Instead enters the food web as detritus (particles of organic material that provide food for organisms at the base of the estuary’s food web) • Support an astonishing amount of biomass ...
... – Instead enters the food web as detritus (particles of organic material that provide food for organisms at the base of the estuary’s food web) • Support an astonishing amount of biomass ...
Scholarly Interest Report
... My research integrates community ecology with evolutionary biology to explore the ecological dynamics and the evolutionary consequences of interactions among plants, animals and microbes. Plants interact with other community members through both direct and indirect pathways. For example, plants are ...
... My research integrates community ecology with evolutionary biology to explore the ecological dynamics and the evolutionary consequences of interactions among plants, animals and microbes. Plants interact with other community members through both direct and indirect pathways. For example, plants are ...
diversity presentation
... Stability is the ability to withstand internal and external disturbances. • Ex: internal species extinction external fires, floods, pest outbreaks ...
... Stability is the ability to withstand internal and external disturbances. • Ex: internal species extinction external fires, floods, pest outbreaks ...
communication inspired by nature
... Abstracted principle: Provide individuals with outcomes which are rare in their environment to attract them and form a community centered on those outcomes. References: Ask Nature: Epiphytes capture nutrients: Bromeliads Attenborough, D. 1995. The Private Life of Plants: A Natural History of Plant B ...
... Abstracted principle: Provide individuals with outcomes which are rare in their environment to attract them and form a community centered on those outcomes. References: Ask Nature: Epiphytes capture nutrients: Bromeliads Attenborough, D. 1995. The Private Life of Plants: A Natural History of Plant B ...
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.