EcologyUnit3-6.24.15
... 3255.3.3 Distinguish among the following roles and cite Tennessee examples of each: o native species o non-native species o invasive species o indicator species o “keystone” species. 3255.3.4 Discuss how competition and predation regulate population size. 3255.3.5 Summarize the principles of c ...
... 3255.3.3 Distinguish among the following roles and cite Tennessee examples of each: o native species o non-native species o invasive species o indicator species o “keystone” species. 3255.3.4 Discuss how competition and predation regulate population size. 3255.3.5 Summarize the principles of c ...
Endangered Species
... Biodiversity is affected by human activity. The consequences of rapid and tremendous industrialization has manifest as pollution. A polluted environment (or even a changed environment) threatens the survival of any species that cannot adapt to it. Already many species have vanished forever. Many ot ...
... Biodiversity is affected by human activity. The consequences of rapid and tremendous industrialization has manifest as pollution. A polluted environment (or even a changed environment) threatens the survival of any species that cannot adapt to it. Already many species have vanished forever. Many ot ...
APES Vocabulary Review
... Biogeography- The large-scale geographic pattern in the distribution of species, and the causes and history of this distribution. Biological Control – A set of methods to control pest organisms by using natural ecological interactions, including predation, parasitism, and competition. Part of the in ...
... Biogeography- The large-scale geographic pattern in the distribution of species, and the causes and history of this distribution. Biological Control – A set of methods to control pest organisms by using natural ecological interactions, including predation, parasitism, and competition. Part of the in ...
Fish abundance with no fishing: predictions based on
... results suggest that depletion of large fishes due to fisheries exploitation exceeds that described in many short-term studies. 6. Biomass of the contemporary North Sea fish community (defined as all fishes with body mass 64 g−66 kg) is 38% lower than predicted in the absence of exploitation, while ...
... results suggest that depletion of large fishes due to fisheries exploitation exceeds that described in many short-term studies. 6. Biomass of the contemporary North Sea fish community (defined as all fishes with body mass 64 g−66 kg) is 38% lower than predicted in the absence of exploitation, while ...
OCR AS and A Level Biology A Delivery Guide
... supporting students with little background knowledge or experience of examples of species or habitats ensuring that the clarity and precision of language used to discuss biodiversity topics is equivalent to that used to discuss other A Level topics such as biological molecules. Students are likely t ...
... supporting students with little background knowledge or experience of examples of species or habitats ensuring that the clarity and precision of language used to discuss biodiversity topics is equivalent to that used to discuss other A Level topics such as biological molecules. Students are likely t ...
Resource Partitioning in Ecological Communities
... to show higher ratios (29). Furthermore, insectivorous birds and lizards sometimes increase ratios with increasing body size (27, 29). Why should sizes be a constant or increasing multiple of one another rather than be separated by a constant difference? If populations were close to numbers that wou ...
... to show higher ratios (29). Furthermore, insectivorous birds and lizards sometimes increase ratios with increasing body size (27, 29). Why should sizes be a constant or increasing multiple of one another rather than be separated by a constant difference? If populations were close to numbers that wou ...
Hybridization and Conservation
... The New Zealand black stilt - formerly bred throughout New Zealand - now occurs in only one river basin due to predation and loss of breeding habitat. The pied stilt - self-introduced from Australia to the South Island in the early 1800s - spread to the North Island in the 1900s Hybrids - were first ...
... The New Zealand black stilt - formerly bred throughout New Zealand - now occurs in only one river basin due to predation and loss of breeding habitat. The pied stilt - self-introduced from Australia to the South Island in the early 1800s - spread to the North Island in the 1900s Hybrids - were first ...
Chapter 5
... Core Case Study: Endangered Southern Sea Otter (2) • 1938-2008: increase from 50 to ~2760 • 1977: declared an endangered species • Why should we care? 1. Cute and cuddly – tourists love them 2. Ethics – it’s wrong to hunt a species to extinction 3. Keystone species – eat other species that would de ...
... Core Case Study: Endangered Southern Sea Otter (2) • 1938-2008: increase from 50 to ~2760 • 1977: declared an endangered species • Why should we care? 1. Cute and cuddly – tourists love them 2. Ethics – it’s wrong to hunt a species to extinction 3. Keystone species – eat other species that would de ...
Understanding Populations Section 1
... • A population may increase beyond this number but it cannot stay at this increased size. • Because ecosystems change, carrying capacity is difficult to predict or calculate exactly. • However, it may be estimated by looking at average population sizes or by observing a population crash after a cert ...
... • A population may increase beyond this number but it cannot stay at this increased size. • Because ecosystems change, carrying capacity is difficult to predict or calculate exactly. • However, it may be estimated by looking at average population sizes or by observing a population crash after a cert ...
Population Growth Finz 2012
... fields often result in a secondary pest outbreak as more-tolerant-to-pesticide species expand once less tolerant competitors are removed. ...
... fields often result in a secondary pest outbreak as more-tolerant-to-pesticide species expand once less tolerant competitors are removed. ...
3.6 Freshwater Mussels - North Carolina Wildlife Resources
... T – Threatened; a taxon which is likely to become an endangered species within the foreseeable future throughout all or a significant portion of its range. C – Candidate; taxa for which the [Fish and Wildlife] Service has on file enough substantial information on biological vulnerability and threat( ...
... T – Threatened; a taxon which is likely to become an endangered species within the foreseeable future throughout all or a significant portion of its range. C – Candidate; taxa for which the [Fish and Wildlife] Service has on file enough substantial information on biological vulnerability and threat( ...
Course Descriptions FWCE 110 (3 cr.) – Introduction to Natural
... FWCE 409 (3 cr.) – Introduction to Population Ecology Quantitative analysis of vital statistics and mechanisms affecting dynamics of wild opulations. Patterns of growth, age structure, survival, and natality. Population theories and life tables. Prerequisites: MATH 142G and FWCE 255. FWCE 430 4(3+3 ...
... FWCE 409 (3 cr.) – Introduction to Population Ecology Quantitative analysis of vital statistics and mechanisms affecting dynamics of wild opulations. Patterns of growth, age structure, survival, and natality. Population theories and life tables. Prerequisites: MATH 142G and FWCE 255. FWCE 430 4(3+3 ...
Criticality and unpredictability in macroevolution
... Recall that in the analytical calculation the zeros that might be found after the extinction event are not taken into account. This temporal evolution of the entropy has also been observed in Ray’s model tierra of artificial life evolution @24#. The system slowly evolves to an ‘‘attractor’’ characte ...
... Recall that in the analytical calculation the zeros that might be found after the extinction event are not taken into account. This temporal evolution of the entropy has also been observed in Ray’s model tierra of artificial life evolution @24#. The system slowly evolves to an ‘‘attractor’’ characte ...
Interaction strength combinations and the overfishing of a marine
... assessment of the ‘‘absolute prey response standardized by some measure of prey abundance.’’ This measure has been empirically calculated for only a few species. In contrast, observational, indirect (static) information has been used to estimate interaction strength for larger communities (5). Our m ...
... assessment of the ‘‘absolute prey response standardized by some measure of prey abundance.’’ This measure has been empirically calculated for only a few species. In contrast, observational, indirect (static) information has been used to estimate interaction strength for larger communities (5). Our m ...
Game: Marine Food Web - Tasmania Parks and Wildlife
... A food chain shows how each living thing gets energy through its food. Plants get energy from the sun. Some animals eat plants (herbivores), some eat both plants and animals (omnivores) and some animals eat other animals (carnivores). In a food chain, each link in the chain (or food source) becomes ...
... A food chain shows how each living thing gets energy through its food. Plants get energy from the sun. Some animals eat plants (herbivores), some eat both plants and animals (omnivores) and some animals eat other animals (carnivores). In a food chain, each link in the chain (or food source) becomes ...
sea otter conservation
... sea otters. Some of the otters translocated to San Nicholas Island died, some swam back to the parent range. More than half of the translocated sea otters disappeared. A management zone was also created in 1986 to reduce sea otter-fishery conflicts. The management zone is an area outside the parent ...
... sea otters. Some of the otters translocated to San Nicholas Island died, some swam back to the parent range. More than half of the translocated sea otters disappeared. A management zone was also created in 1986 to reduce sea otter-fishery conflicts. The management zone is an area outside the parent ...
Ecological consequences of human niche
... the northern common cuscus (Phalanger orientalis), endemic to New Guinea, was transported to eastern Indonesia, the Solomon Islands, and the Bismarck Archipelago beginning ∼20–23 ka, becoming a key subsistence species (26, 27). Other taxa were also moved; together with a species of bandicoot (Ech ...
... the northern common cuscus (Phalanger orientalis), endemic to New Guinea, was transported to eastern Indonesia, the Solomon Islands, and the Bismarck Archipelago beginning ∼20–23 ka, becoming a key subsistence species (26, 27). Other taxa were also moved; together with a species of bandicoot (Ech ...
Overexploitation
Overexploitation, also called overharvesting, refers to harvesting a renewable resource to the point of diminishing returns. Sustained overexploitation can lead to the destruction of the resource. The term applies to natural resources such as: wild medicinal plants, grazing pastures, game animals, fish stocks, forests, and water aquifers.In ecology, overexploitation describes one of the five main activities threatening global biodiversity. Ecologists use the term to describe populations that are harvested at a rate that is unsustainable, given their natural rates of mortality and capacities for reproduction. This can result in extinction at the population level and even extinction of whole species. In conservation biology the term is usually used in the context of human economic activity that involves the taking of biological resources, or organisms, in larger numbers than their populations can withstand. The term is also used and defined somewhat differently in fisheries, hydrology and natural resource management.Overexploitation can lead to resource destruction, including extinctions. However it is also possible for overexploitation to be sustainable, as discussed below in the section on fisheries. In the context of fishing, the term overfishing can be used instead of overexploitation, as can overgrazing in stock management, overlogging in forest management, overdrafting in aquifer management, and endangered species in species monitoring. Overexploitation is not an activity limited to humans. Introduced predators and herbivores, for example, can overexploit native flora and fauna.