Marine Ecology 2010 final lecture 4 Competition
... 10. Why are species with planktotrophic larvae more common in the tropics than at polar latitudes? 11. What is the value of planktonic feeding larval development? 12. What are the potential sources of mortality for planktonic larvae? 13. What effect does planktotrophic larval dispersal tend to have ...
... 10. Why are species with planktotrophic larvae more common in the tropics than at polar latitudes? 11. What is the value of planktonic feeding larval development? 12. What are the potential sources of mortality for planktonic larvae? 13. What effect does planktotrophic larval dispersal tend to have ...
olabisi onabanjo university pls317: plant ecology
... Succession is a process of ecological change involving the progressive replacement of earlier biotic communities with others over time. It will interest you to know that succession usually begins with the disturbance of a pre-existing ecosystem follow by recovery. In the absence of further disturban ...
... Succession is a process of ecological change involving the progressive replacement of earlier biotic communities with others over time. It will interest you to know that succession usually begins with the disturbance of a pre-existing ecosystem follow by recovery. In the absence of further disturban ...
Chapter 8 pages 143-146
... about ______ of the earth’s land surface (excluding Antarctica and Greenland). In the U.S. at least ________ of the virgin forests in the lower 48 states have been ________________ for lumber & to make room for ________________, ________________, and industry. _______ of tallgrass prairie in the Mid ...
... about ______ of the earth’s land surface (excluding Antarctica and Greenland). In the U.S. at least ________ of the virgin forests in the lower 48 states have been ________________ for lumber & to make room for ________________, ________________, and industry. _______ of tallgrass prairie in the Mid ...
Chapter 52: An Introduction to Ecology and the Biosphere
... The next three chapters on population, community, and ecosystem ecology provide the academic backbone for this unit on ecology. Each chapter is a different organizational level in ecology, starting with population ecology. Before beginning your study of each chapter, be sure you have a clear underst ...
... The next three chapters on population, community, and ecosystem ecology provide the academic backbone for this unit on ecology. Each chapter is a different organizational level in ecology, starting with population ecology. Before beginning your study of each chapter, be sure you have a clear underst ...
Chapters • Lesson 16
... Visual communication is often used to attract mates. For example, many animals perform courtship dances. Courtship dances are usually instinctive, elaborate, and ritualistic movements that an animal performs to attract the attention of a potential mate. Such rituals have been observed in scorpions, ...
... Visual communication is often used to attract mates. For example, many animals perform courtship dances. Courtship dances are usually instinctive, elaborate, and ritualistic movements that an animal performs to attract the attention of a potential mate. Such rituals have been observed in scorpions, ...
Individuals, populations and the balance of nature: the question of
... However, ‘‘non-equilibrium’’ does not provide an obvious alternative to the notion of equilibrium. When ecological systems are defined in this way, in terms of what they are not, one is implicitly taken back to the point of departure, meaning that ecological systems are again interpreted only in rel ...
... However, ‘‘non-equilibrium’’ does not provide an obvious alternative to the notion of equilibrium. When ecological systems are defined in this way, in terms of what they are not, one is implicitly taken back to the point of departure, meaning that ecological systems are again interpreted only in rel ...
population
... function within an ecological community. • A niche can also be though of as the functional role, or job of a particular species in an ecosystem. ...
... function within an ecological community. • A niche can also be though of as the functional role, or job of a particular species in an ecosystem. ...
Characteristics of Resilient Ecosystems and Strategies for
... Planting species over a broader range of environments. We currently know little about how climate change will affect the ability of species to re-establish in different locations, or how varying responses to change in different locations will affect species interactions. Redundant plantings of speci ...
... Planting species over a broader range of environments. We currently know little about how climate change will affect the ability of species to re-establish in different locations, or how varying responses to change in different locations will affect species interactions. Redundant plantings of speci ...
LS Gr12 Session 18 LN (Commmun struct.doc
... Lions and leopards are predators that co-exist in the same areas. Lions feed on larger buck because the females in the pride hunt together and are able to pull down a large animal. Leopards and cheetahs are solitary hunters and hunt smaller prey so there is stable co-existence between these two pr ...
... Lions and leopards are predators that co-exist in the same areas. Lions feed on larger buck because the females in the pride hunt together and are able to pull down a large animal. Leopards and cheetahs are solitary hunters and hunt smaller prey so there is stable co-existence between these two pr ...
Midterm 2013 Review
... 1. Lipids are more commonly known as Fats or Waxes and are hydrophobic or dislike water. 2. They make up the membranes of cells which are composed of a lipid bilayer. 3. They are used to store energy in the body in long chains these chains are made out of Fatty acid and Glycerol molecule. 4. Lipids ...
... 1. Lipids are more commonly known as Fats or Waxes and are hydrophobic or dislike water. 2. They make up the membranes of cells which are composed of a lipid bilayer. 3. They are used to store energy in the body in long chains these chains are made out of Fatty acid and Glycerol molecule. 4. Lipids ...
biodiversity and infectious disease: why we need nature
... intimately linked with understanding the trade-offs between agriculture, trade and nature (Arrow et al., 1995; Balmford et al., 2002; Costanza, 1991). Inherently asking the question ‘Do we need Nature?’ assumes we can realistically compare the long-term value of natural habitats, whose benefits are ...
... intimately linked with understanding the trade-offs between agriculture, trade and nature (Arrow et al., 1995; Balmford et al., 2002; Costanza, 1991). Inherently asking the question ‘Do we need Nature?’ assumes we can realistically compare the long-term value of natural habitats, whose benefits are ...
What factors affect population growth
... Allee effect Density-independent factors Factors unaffected by population density Examples include drought, hurricanes and floods Density-independent factor Decline in the population of one of Darwin's finches (Geospiza fortis) on Galapagos Islands due to drought ...
... Allee effect Density-independent factors Factors unaffected by population density Examples include drought, hurricanes and floods Density-independent factor Decline in the population of one of Darwin's finches (Geospiza fortis) on Galapagos Islands due to drought ...
Ecology Study Guide
... Commensalism – symbiosis in which one organism benefits and the other gets no benefit and is not harmed either Parasitism – symbiosis in which one organism benefits (parasite) and one is harmed (host). The parasite usually lives in or on the host Predation – when one organism kills and eats another ...
... Commensalism – symbiosis in which one organism benefits and the other gets no benefit and is not harmed either Parasitism – symbiosis in which one organism benefits (parasite) and one is harmed (host). The parasite usually lives in or on the host Predation – when one organism kills and eats another ...
B 262, S 2009
... example of an organism that could be described as each of these. Feel free but do not feel obliged to use labeled sketches for your answer. (5%) ...
... example of an organism that could be described as each of these. Feel free but do not feel obliged to use labeled sketches for your answer. (5%) ...
Origins of Species chpt 16 txt bk ppt
... Appearance Can Be Misleading • The cordilleran flycatcher and Pacific slope flycatcher are so similar that birdwatchers can’t tell them apart • These birds were considered to be a single species, but research revealed that they do not interbreed and are in fact two different species ...
... Appearance Can Be Misleading • The cordilleran flycatcher and Pacific slope flycatcher are so similar that birdwatchers can’t tell them apart • These birds were considered to be a single species, but research revealed that they do not interbreed and are in fact two different species ...
Exam_2_Lecture_Notes
... There is Evolution without natural selection: B. Genetic Drift: In small populations, evolution over time may simply be due to ‘rolls of the dice’ of allele transmission. This is purely random and has nothing to do with environmental selection. ...
... There is Evolution without natural selection: B. Genetic Drift: In small populations, evolution over time may simply be due to ‘rolls of the dice’ of allele transmission. This is purely random and has nothing to do with environmental selection. ...
INTRASPECIFIC VARIATION AND GEOGRAPHIC ISOLATION IN
... isolated in different geographic locations may develop different patterns of response to local predators and algal communities; this hypothesis has not been tested with direct reference to populations that are known to be historically isolated. However, other species seem to share this pattern of di ...
... isolated in different geographic locations may develop different patterns of response to local predators and algal communities; this hypothesis has not been tested with direct reference to populations that are known to be historically isolated. However, other species seem to share this pattern of di ...
2.5 Food Webs and Ecological Pyramids
... energy by placing your hand on your forehead. Organisms such as plants also release small quantities of thermal energy to the environment. Plants use the energy they obtain from the Sun for growth, reproduction, and cellular activities. Some of this energy is lost to the environment. As a result, le ...
... energy by placing your hand on your forehead. Organisms such as plants also release small quantities of thermal energy to the environment. Plants use the energy they obtain from the Sun for growth, reproduction, and cellular activities. Some of this energy is lost to the environment. As a result, le ...
Predation, Mutualism, Commensalism, or Parasitism
... Plants have a large array of defense mechanisms that guard against entophytes and other fungi from becoming pathogens. These defenses include physical barriers like the tough cuticle lining the surfaces of plants or the bark on trees. Chemical barriers including various toxins and strong oxidizers m ...
... Plants have a large array of defense mechanisms that guard against entophytes and other fungi from becoming pathogens. These defenses include physical barriers like the tough cuticle lining the surfaces of plants or the bark on trees. Chemical barriers including various toxins and strong oxidizers m ...
BDOL Interactive Chalkboard
... Ecologists interested in energy flow in an ecosystem may set up experiments with as many organisms in the community as they can. The model they create, called a ___________ _____________, shows all the possible feeding relationships at each trophic level in a community. ...
... Ecologists interested in energy flow in an ecosystem may set up experiments with as many organisms in the community as they can. The model they create, called a ___________ _____________, shows all the possible feeding relationships at each trophic level in a community. ...
Ecological fitting
Ecological fitting is ""the process whereby organisms colonize and persist in novel environments, use novel resources or form novel associations with other species as a result of the suites of traits that they carry at the time they encounter the novel condition.” It can be understood as a situation in which a species' interactions with its biotic and abiotic environment seem to indicate a history of coevolution, when in actuality the relevant traits evolved in response to a different set of biotic and abiotic conditions. The simplest form of ecological fitting is resource tracking, in which an organism continues to exploit the same resources, but in a new host or environment. In this framework, the organism occupies a multidimensional operative environment defined by the conditions in which it can persist, similar to the idea of the Hutchinsonian niche. In this case, a species can colonize new environments (e.g. an area with the same temperature and water regime) and/or form new species interactions (e.g. a parasite infecting a new host) which can lead to the misinterpretation of the relationship as coevolution, although the organism has not evolved and is continuing to exploit the same resources it always has. The more strict definition of ecological fitting requires that a species encounter an environment or host outside of its original operative environment and obtain realized fitness based on traits developed in previous environments that are now co-opted for a new purpose. This strict form of ecological fitting can also be expressed either as colonization of new habitat or the formation of new species interactions.