Allopatric Speciation*Drift
... Allopatric Speciation—Drift • Drift is important in evolution • Just because an allele is common doesn’t mean selection favored it ...
... Allopatric Speciation—Drift • Drift is important in evolution • Just because an allele is common doesn’t mean selection favored it ...
Diversity and the Coevolution of Competitors, or the Ghost of
... the species in use of resources has occurred, (2) that it was caused by competition rather than by some other mechanism, and (3) that the divergence has a genetic, not simply a phenotypic, basis. While it should be possible to demonstrate all three in laboratory populations, it is perhaps of more ge ...
... the species in use of resources has occurred, (2) that it was caused by competition rather than by some other mechanism, and (3) that the divergence has a genetic, not simply a phenotypic, basis. While it should be possible to demonstrate all three in laboratory populations, it is perhaps of more ge ...
Missing links in food
... large reserves must be to hold predators or even their prey. A few years ago, I sat munching on my lunchtime sandwich, watching wildlife that ought only appear together in a dream. Fifty wild horses stared at me. The red deer grazing behind them were oblivious. Farther away a large flock of barnacle ...
... large reserves must be to hold predators or even their prey. A few years ago, I sat munching on my lunchtime sandwich, watching wildlife that ought only appear together in a dream. Fifty wild horses stared at me. The red deer grazing behind them were oblivious. Farther away a large flock of barnacle ...
PHYSICAL FEATURES OF THE MARINE ENVIRONMENT:
... 6. Describe Bob Paine’s initial experimental procedures and key results for Pisaster ochraceus removal experiments on the Washington coast. 7. When Bob Paine returned to his experimental sites 14-17 years after the Pisaster-exclusion cages were removed he found that the thick beds of mussels persist ...
... 6. Describe Bob Paine’s initial experimental procedures and key results for Pisaster ochraceus removal experiments on the Washington coast. 7. When Bob Paine returned to his experimental sites 14-17 years after the Pisaster-exclusion cages were removed he found that the thick beds of mussels persist ...
Species detection using environmental DNA from water samples
... We showed that environmental DNA (either in solution or in cellular debris) can be used to ascertain species presence in a wetland, and that this technique is able to discriminate between absence and presence, even at low densities. As the environment can retain the molecular imprint of inhabiting s ...
... We showed that environmental DNA (either in solution or in cellular debris) can be used to ascertain species presence in a wetland, and that this technique is able to discriminate between absence and presence, even at low densities. As the environment can retain the molecular imprint of inhabiting s ...
Disturbance and Succesion Worksheet - Ecosystem
... Ecosystems are constantly changing from and then returning to their natural communities. The causes (called disturbances) can be either human changes or natural events. Succession is an ecosystem’s slow and predictable (step by step) return to its natural, native community of species – the Climax Co ...
... Ecosystems are constantly changing from and then returning to their natural communities. The causes (called disturbances) can be either human changes or natural events. Succession is an ecosystem’s slow and predictable (step by step) return to its natural, native community of species – the Climax Co ...
Alien invasive species (AIS)
... questions about the appropriateness of using the EU Wildlife Trade Regulations to deal with the problem of invasive alien species, the EU is currently considering a dedicated legal instrument to deal with the issue 3. The International Maritime Organisation (IMO) adopted the International Convention ...
... questions about the appropriateness of using the EU Wildlife Trade Regulations to deal with the problem of invasive alien species, the EU is currently considering a dedicated legal instrument to deal with the issue 3. The International Maritime Organisation (IMO) adopted the International Convention ...
Current Normative Concepts in Conservation
... think that any human modification of nature is unnatural. The connection between a compositionalist view of the humanity–nature relationship and evolutionary ecology is tenuous and contingent, not logically necessary. On evolutionarily significant scales of time, Homo sapiens is a latecomer, a new s ...
... think that any human modification of nature is unnatural. The connection between a compositionalist view of the humanity–nature relationship and evolutionary ecology is tenuous and contingent, not logically necessary. On evolutionarily significant scales of time, Homo sapiens is a latecomer, a new s ...
Ecology and the Environmental Sciences
... Ozone and UV-B in the atmosphere (text) Acid rain (text) Climate change and greenhouse gases (text and lecture) Landfills and recycling (text) Over-harvesting of marine fisheries Biodiversity or loss of species Mercury in the environment (lecture) Endocrine disruptors (lecture) ...
... Ozone and UV-B in the atmosphere (text) Acid rain (text) Climate change and greenhouse gases (text and lecture) Landfills and recycling (text) Over-harvesting of marine fisheries Biodiversity or loss of species Mercury in the environment (lecture) Endocrine disruptors (lecture) ...
The effects of disturbance on trophic levels, food webs
... stemmed from natural causes such as fire, from anthropogenic causes such as predator removal, from invasions of exotic species, or from the removal of native species. According to Wootton (1998), disturbance can be a landscape‐altering phenomenon and can have consequences that disrupt ecological ...
... stemmed from natural causes such as fire, from anthropogenic causes such as predator removal, from invasions of exotic species, or from the removal of native species. According to Wootton (1998), disturbance can be a landscape‐altering phenomenon and can have consequences that disrupt ecological ...
V) Maintenance of species diversity
... i) Facilitation: early species modify the environment… - make it more suitable for later species - later species can’t colonize until environment modified - modified environment sometimes not so good for early species ii) Inhibition: early species inhibit later species from colonizing… - later speci ...
... i) Facilitation: early species modify the environment… - make it more suitable for later species - later species can’t colonize until environment modified - modified environment sometimes not so good for early species ii) Inhibition: early species inhibit later species from colonizing… - later speci ...
Rethinking plant community theory
... exclude virtually all natives in an environment that the invader has never experienced? We may turn to trophic levels for explanations, and certainly the release from natural enemies is a crucial component of invasive plant success as illustrated by the success of some biocontrol herbivores (Blossey ...
... exclude virtually all natives in an environment that the invader has never experienced? We may turn to trophic levels for explanations, and certainly the release from natural enemies is a crucial component of invasive plant success as illustrated by the success of some biocontrol herbivores (Blossey ...
EHS-I-unit-v
... The mutual and reciprocal influence between the living organisms and their non-living environment for the continued survival and maintenance of life processes is the dynamic feature of an eco system. An ecosystem basically involves energy flow and nutrient cycling between its various components in a ...
... The mutual and reciprocal influence between the living organisms and their non-living environment for the continued survival and maintenance of life processes is the dynamic feature of an eco system. An ecosystem basically involves energy flow and nutrient cycling between its various components in a ...
St. Kateri Outdoor Learning Centre Lesson Plan Understanding
... Have been taught about, and be able to identify, different interactions within an ecosystem (i.e., mutualism, predation, competition, commensalism). Be dressed appropriately to hike the trail. Be asked to bring a digital camera, phone with a camera, or tablet with them for documentation. (Note ...
... Have been taught about, and be able to identify, different interactions within an ecosystem (i.e., mutualism, predation, competition, commensalism). Be dressed appropriately to hike the trail. Be asked to bring a digital camera, phone with a camera, or tablet with them for documentation. (Note ...
Invasive species: a global concern bubbling to the
... Finally, perhaps the main route for the spread of aquatic IAS is transport in ballast water, leading to a major international programme to address the problem (see below). Technology has improved significantly in the past decade, and may be helpful in addressing the IAS issue. Clearly, information i ...
... Finally, perhaps the main route for the spread of aquatic IAS is transport in ballast water, leading to a major international programme to address the problem (see below). Technology has improved significantly in the past decade, and may be helpful in addressing the IAS issue. Clearly, information i ...
Mesic forest - Piedmont mesic forests occur on moist portions of
... Conduct herpetofauna monitoring to track population trends for species of concern. Particular attention should be paid to mole salamanders and four‐toed salamanders. ...
... Conduct herpetofauna monitoring to track population trends for species of concern. Particular attention should be paid to mole salamanders and four‐toed salamanders. ...
Does functional redundancy exist?
... hypothesis of functional redundancy. Not all experiments, however, have been able to reject this null hypothesis (reviewed by Loreau et al. 2002), and rejection of the null hypothesis does not necessarily imply that functional redundancy is not present among some of the species, e.g. within function ...
... hypothesis of functional redundancy. Not all experiments, however, have been able to reject this null hypothesis (reviewed by Loreau et al. 2002), and rejection of the null hypothesis does not necessarily imply that functional redundancy is not present among some of the species, e.g. within function ...
BCS311 Module 5
... in the form of sugars produced and stored in plant tissues during daytime to operate during the night. Organisms that cannot survive on abiotic sources of chemicals and energy do so by digesting the biomass produced by other organisms. They obtain the energy for their growth and reproduction only fr ...
... in the form of sugars produced and stored in plant tissues during daytime to operate during the night. Organisms that cannot survive on abiotic sources of chemicals and energy do so by digesting the biomass produced by other organisms. They obtain the energy for their growth and reproduction only fr ...
Title: Fine-scale and Microhabitat Factors Influencing Terrestrial
... Furthermore, analyzing species’ distribution and abundance along environmental gradients yields invaluable information about their niche requirements, population dynamics, and biotic interactions (Costa et al. 2008, Peterman and Semlitsch 2013), and can even inform decisions about habitat management ...
... Furthermore, analyzing species’ distribution and abundance along environmental gradients yields invaluable information about their niche requirements, population dynamics, and biotic interactions (Costa et al. 2008, Peterman and Semlitsch 2013), and can even inform decisions about habitat management ...
Population Distribution and Abundance
... increasing organism size. – Damuth found the population density of herbivorous mammals decreased with increased body size. – Peters and Wassenberg found aquatic invertebrates tend to have higher population densities than terrestrial invertebrates of similar size. • Mammals tend to have higher popula ...
... increasing organism size. – Damuth found the population density of herbivorous mammals decreased with increased body size. – Peters and Wassenberg found aquatic invertebrates tend to have higher population densities than terrestrial invertebrates of similar size. • Mammals tend to have higher popula ...
GSTM Model Challenge February 16, 2010 Power point - eco
... Sets, frames and context...games in ecological restoration and the beauty of nature...seeing cohorts. Enhancing beauty, fostering hope, planning on clean water and food. **** “If this, then that.” Tamra Engelhorn Raven January 2009 ...
... Sets, frames and context...games in ecological restoration and the beauty of nature...seeing cohorts. Enhancing beauty, fostering hope, planning on clean water and food. **** “If this, then that.” Tamra Engelhorn Raven January 2009 ...
Biology 2 Semester Review
... Biodiversity is one of Earth's greatest natural resources. Many species have provided us with foods, industrial products, and medicines—including painkillers, antibiotics, heart drugs, antidepressants, and anticancer drugs. ...
... Biodiversity is one of Earth's greatest natural resources. Many species have provided us with foods, industrial products, and medicines—including painkillers, antibiotics, heart drugs, antidepressants, and anticancer drugs. ...
Technical Note TN660
... the Wildlife and Countryside Act 1981 (as amended) and it is an offence to intentionally or recklessly kill, injure or take any wild bird (apart from Schedule 2 species outside the close season) or to take, damage, destroy or otherwise interfere with the nest of any wild bird while it is in use, unl ...
... the Wildlife and Countryside Act 1981 (as amended) and it is an offence to intentionally or recklessly kill, injure or take any wild bird (apart from Schedule 2 species outside the close season) or to take, damage, destroy or otherwise interfere with the nest of any wild bird while it is in use, unl ...
Species Invasions - UK College of Agriculture
... V = radial velocity wave (speed of spread of invader) r = intrinsic growth rate (how fast can invader reproduce) D = diffusion coefficient through environment (how easy is it for invader to inhabit and spread through a particular patch) ...
... V = radial velocity wave (speed of spread of invader) r = intrinsic growth rate (how fast can invader reproduce) D = diffusion coefficient through environment (how easy is it for invader to inhabit and spread through a particular patch) ...
Biodiversity action plan
This article is about a conservation biology topic. For other uses of BAP, see BAP (disambiguation).A biodiversity action plan (BAP) is an internationally recognized program addressing threatened species and habitats and is designed to protect and restore biological systems. The original impetus for these plans derives from the 1992 Convention on Biological Diversity (CBD). As of 2009, 191 countries have ratified the CBD, but only a fraction of these have developed substantive BAP documents.The principal elements of a BAP typically include: (a) preparing inventories of biological information for selected species or habitats; (b) assessing the conservation status of species within specified ecosystems; (c) creation of targets for conservation and restoration; and (d) establishing budgets, timelines and institutional partnerships for implementing the BAP.