AP Ecology HW 2012 current
... G.4.3- Outline the biogeographical features of nature reserves that promote the conservation of diversity G.4.4- Discuss the role of active management techniques in conservation G.4. 5 Discuss the advantages of in situ conservation of endangered species (terrestrial & aquatic reserves) G.4. 6- Outli ...
... G.4.3- Outline the biogeographical features of nature reserves that promote the conservation of diversity G.4.4- Discuss the role of active management techniques in conservation G.4. 5 Discuss the advantages of in situ conservation of endangered species (terrestrial & aquatic reserves) G.4. 6- Outli ...
Mechanisms responsible for the positive diversity–productivity relationship in Minnesota grasslands
... ecosystem ecologists have also become interested in these interactions, because the consequences of species extinctions for ecosystem metrics such as aboveground productivity may depend on the same species interactions that determine community dynamics (Naeem et al. 1994; Petchey 2000; Cardinale et ...
... ecosystem ecologists have also become interested in these interactions, because the consequences of species extinctions for ecosystem metrics such as aboveground productivity may depend on the same species interactions that determine community dynamics (Naeem et al. 1994; Petchey 2000; Cardinale et ...
The Implications of Niche Construction and Ecosystem
... species, which regulates ecosystem functioning in conjunction with the well-studied webs of trophic interactions (Wilby 2002). Moreover, ecosystem engineers can control flows of energy and materials among trophically interconnected organisms without being part of those flows. The laws of conservatio ...
... species, which regulates ecosystem functioning in conjunction with the well-studied webs of trophic interactions (Wilby 2002). Moreover, ecosystem engineers can control flows of energy and materials among trophically interconnected organisms without being part of those flows. The laws of conservatio ...
Carrying Capacity of Ecosystems
... Foreign species often compete with native species for food and habitat, OR they may prey on them. Generally, invasive competitors and predators have a greater negative affect on local species than native competitors or predators. This is often due to the fact that native species have not evolved str ...
... Foreign species often compete with native species for food and habitat, OR they may prey on them. Generally, invasive competitors and predators have a greater negative affect on local species than native competitors or predators. This is often due to the fact that native species have not evolved str ...
Life on Rocky Shores
... Anthopleura elegantissima is generally in tight colonies, often partly obliterated by sand. Some interesting biology to deal with here! First of all, each aggregation is a clone, formed by repeated divisions that began with a single individual. An anemone elongates at its base, and gradually the two ...
... Anthopleura elegantissima is generally in tight colonies, often partly obliterated by sand. Some interesting biology to deal with here! First of all, each aggregation is a clone, formed by repeated divisions that began with a single individual. An anemone elongates at its base, and gradually the two ...
Ecological principles and function of natural ecosystems - MIO
... habitat degradation to a certain point, then fall sharply after a critical threshold of degradation is reached. Human behaviour, especially at group levels, sometimes exhibits threshold effects. Thresholds at which irreversible changes occur are especially of concern to decision makers. ...
... habitat degradation to a certain point, then fall sharply after a critical threshold of degradation is reached. Human behaviour, especially at group levels, sometimes exhibits threshold effects. Thresholds at which irreversible changes occur are especially of concern to decision makers. ...
Top predator control of plant biodiversity and productivity in an old
... (randomized block MANOVA, Wilks Lambda 0.737, d.f. ¼ 4, 36, P ¼ 0.06). A posteriori randomized block ANOVAs revealed that this significance was entirely due to treatment effects on plant species evenness (P < 0.02, d.f. ¼ 2, 18): there was no significant treatment effect on plant species richness (P ...
... (randomized block MANOVA, Wilks Lambda 0.737, d.f. ¼ 4, 36, P ¼ 0.06). A posteriori randomized block ANOVAs revealed that this significance was entirely due to treatment effects on plant species evenness (P < 0.02, d.f. ¼ 2, 18): there was no significant treatment effect on plant species richness (P ...
Consulta: subjectFacets:"Mimicry" Registros recuperados: 14 Data
... Alfred Russel Wallace and the Darwinian Species Concept: His Paper on the Swallowtail Butterflies (Papilionidae) of 1865 Provedor de dados: 72 Autores: Mallet,James. Soon after his return from the Malay Archipelago, Alfred Russel Wallace published one of his most signifcant papers. The paper used b ...
... Alfred Russel Wallace and the Darwinian Species Concept: His Paper on the Swallowtail Butterflies (Papilionidae) of 1865 Provedor de dados: 72 Autores: Mallet,James. Soon after his return from the Malay Archipelago, Alfred Russel Wallace published one of his most signifcant papers. The paper used b ...
LAPB 2009 Program wi.. - Louisiana Association of Professional
... Colonial nesting seabirds face a variety of threats, including habitat loss and degradation, human disturbance, and predation. Louisiana contains large breeding colonies of many of these birds, and several species of conservation concern concentrate high percentages of their total U.S. populations ...
... Colonial nesting seabirds face a variety of threats, including habitat loss and degradation, human disturbance, and predation. Louisiana contains large breeding colonies of many of these birds, and several species of conservation concern concentrate high percentages of their total U.S. populations ...
Behavioral Mediators of the Human Population Effect on Global
... parent species. But more often, the inability to adapt leads to a “terminal extinction”, literally a dead end. The complex causes of terminal extinctions are not always easy to discern. It is not unusual in nature for the rise and success of one species to lead to the downfall of another. Competitio ...
... parent species. But more often, the inability to adapt leads to a “terminal extinction”, literally a dead end. The complex causes of terminal extinctions are not always easy to discern. It is not unusual in nature for the rise and success of one species to lead to the downfall of another. Competitio ...
Problems in the Measurement of Evenness in Ecology Rauno V
... instance, is the logarithm of the number of 'abundant' species. Evenness measures should measure the equality of The use of diversity indices, which combine species richness and evenness of abundance distribution into a abundances in the community: maximum evenness single value, has often been crit ...
... instance, is the logarithm of the number of 'abundant' species. Evenness measures should measure the equality of The use of diversity indices, which combine species richness and evenness of abundance distribution into a abundances in the community: maximum evenness single value, has often been crit ...
Invasive crayfish alert!
... • There are no native freshwater crayfish in mainland Africa and this species can out-compete and even eat native freshwater crabs; it is also capable of affecting the many endemic crustaceans, molluscs and small fish of Lake Tanganyika causing (in the extreme) significant changes in populations an ...
... • There are no native freshwater crayfish in mainland Africa and this species can out-compete and even eat native freshwater crabs; it is also capable of affecting the many endemic crustaceans, molluscs and small fish of Lake Tanganyika causing (in the extreme) significant changes in populations an ...
Large-scale processes and the Asian bias in species
... temperate forest (warm and cool temperate climate groups C and D), distributed in 13 geographically distinct patches, including areas isolated by water on the Korean Peninsula and Japan (Fig. 2). Extensive tropical and subtropical forests at lower elevation separate temperate forests at higher eleva ...
... temperate forest (warm and cool temperate climate groups C and D), distributed in 13 geographically distinct patches, including areas isolated by water on the Korean Peninsula and Japan (Fig. 2). Extensive tropical and subtropical forests at lower elevation separate temperate forests at higher eleva ...
Temporal stability of European rocky shore assemblages
... towards higher latitudes (Vermeij 1978, Connolly et al. 2001, Bertness and Ewanchuk 2002, Sanford et al. 2003, Pennings and Silliman 2005, Coleman et al. 2006), Campbell et al. (2011) have suggested that a weakening of the relationship between diversity and stability towards higher latitudes might b ...
... towards higher latitudes (Vermeij 1978, Connolly et al. 2001, Bertness and Ewanchuk 2002, Sanford et al. 2003, Pennings and Silliman 2005, Coleman et al. 2006), Campbell et al. (2011) have suggested that a weakening of the relationship between diversity and stability towards higher latitudes might b ...
The paradox of enrichment in phytoplankton by induced competitive
... In our model we assume that the birth rates of phytoplankton species are increasing with the increase in nutrient level. As a consequence, we expect an increase in the possibility of coexistence because of more nutrients for all species1. However, we also expect that the increase in nutrients leads ...
... In our model we assume that the birth rates of phytoplankton species are increasing with the increase in nutrient level. As a consequence, we expect an increase in the possibility of coexistence because of more nutrients for all species1. However, we also expect that the increase in nutrients leads ...
White-chinned Petrel Procellaria aequinoctialis
... BREEDING BIOLOGY Many aspects of the life history of P. aequinoctialis are not well known in comparison with those of surface-nesting albatrosses and giant petrels and only a few attempts have been made at studying them in the past [26, 27, 28, 29]. Procellaria aequinoctialis is a colonial species t ...
... BREEDING BIOLOGY Many aspects of the life history of P. aequinoctialis are not well known in comparison with those of surface-nesting albatrosses and giant petrels and only a few attempts have been made at studying them in the past [26, 27, 28, 29]. Procellaria aequinoctialis is a colonial species t ...
Cayman`s blue iguanas moves to “endangered” from “critically
... summation of monitored iguana locations. This area may increase slightly in the next decade, but is currently not predicted to reach one km² (using the recommended grid size of 2×2 km for estimating AOO increases the area to 12 km², a figure which is well within the Endangered threshold and very cl ...
... summation of monitored iguana locations. This area may increase slightly in the next decade, but is currently not predicted to reach one km² (using the recommended grid size of 2×2 km for estimating AOO increases the area to 12 km², a figure which is well within the Endangered threshold and very cl ...
Contributions in Science, number 520:1
... genus are a small fraction of the true diversity, which may be ten times larger than this number. Single sites can have tremendous species richness, with the current record going to a site in Sweden where 330 species were identified (Bonet, 2006). No estimates are available for tropical sites, for w ...
... genus are a small fraction of the true diversity, which may be ten times larger than this number. Single sites can have tremendous species richness, with the current record going to a site in Sweden where 330 species were identified (Bonet, 2006). No estimates are available for tropical sites, for w ...
Robustness of metacommunities with omnivory to habitat destruction
... patches: suitable habitat (s), which can be colonized, and unsuitable habitat (u), which cannot be colonized and can block distance-limited dispersal (Fig. 1b). Hiebeler (2000, 2007) characterizes such landscapes with two parameters: the density S and clustering degree qs/s of the suitable habitat. ...
... patches: suitable habitat (s), which can be colonized, and unsuitable habitat (u), which cannot be colonized and can block distance-limited dispersal (Fig. 1b). Hiebeler (2000, 2007) characterizes such landscapes with two parameters: the density S and clustering degree qs/s of the suitable habitat. ...
Great Desert Skink - Natural Resources South Australia
... plains and in areas between dunes. They dig complex burrow systems which can be over one metre deep and five metres wide with up to 10 entrances and many tunnels. During the cooler months of the year they hibernate in specially constructed chambers in their burrow system. These burrow systems are co ...
... plains and in areas between dunes. They dig complex burrow systems which can be over one metre deep and five metres wide with up to 10 entrances and many tunnels. During the cooler months of the year they hibernate in specially constructed chambers in their burrow system. These burrow systems are co ...
with one new record from Gilgit-Baltistan, Pakistan
... They are of economic importance due to their predatory activity against soft-bodied insects like aphids, jassids, psyllids, whiteflies, scale insects, and mealy bugs. They also prey on small larvae, insect eggs, and phytophagous mites, which are injurious to agricultural and forest plantations. Pred ...
... They are of economic importance due to their predatory activity against soft-bodied insects like aphids, jassids, psyllids, whiteflies, scale insects, and mealy bugs. They also prey on small larvae, insect eggs, and phytophagous mites, which are injurious to agricultural and forest plantations. Pred ...
Q1. (a) Explain the meaning of these ecological terms. Population
... insects too large for species A and temperature too cool for species B? ............. ...
... insects too large for species A and temperature too cool for species B? ............. ...
Module 06 - Environmental Enrichment The objectives of this
... stimuli. Cage equipment, nesting material, etc., allows the animal to interact with and in some cases manipulate their environment. The equipment or material in the cage should be appropriate for the animal's behavioural needs. Perches for birds, for example, should be the correct size or in a varie ...
... stimuli. Cage equipment, nesting material, etc., allows the animal to interact with and in some cases manipulate their environment. The equipment or material in the cage should be appropriate for the animal's behavioural needs. Perches for birds, for example, should be the correct size or in a varie ...
Module 06 - Environmental Enrichment
... stimuli. Cage equipment, nesting material, etc., allows the animal to interact with and in some cases manipulate their environment. The equipment or material in the cage should be appropriate for the animal's behavioural needs. Perches for birds, for example, should be the correct size or in a varie ...
... stimuli. Cage equipment, nesting material, etc., allows the animal to interact with and in some cases manipulate their environment. The equipment or material in the cage should be appropriate for the animal's behavioural needs. Perches for birds, for example, should be the correct size or in a varie ...
OPEN-CANOPY OAK WOODLANDS
... Open-canopy oak woodlands on Mt. Tam are characterized by the presence of long-lived acorn-producing trees from the genus Quercus. This discussion focuses on stands with dominant species include coast live oak (Q. agrifolia), valley oak (Q. lobata), Oregon white oak (Q. garryana var. garryana), and/ ...
... Open-canopy oak woodlands on Mt. Tam are characterized by the presence of long-lived acorn-producing trees from the genus Quercus. This discussion focuses on stands with dominant species include coast live oak (Q. agrifolia), valley oak (Q. lobata), Oregon white oak (Q. garryana var. garryana), and/ ...
Island restoration
The ecological restoration of islands, or island restoration, is the application of the principles of ecological restoration to islands and island groups. Islands, due to their isolation, are home to many of the world's endemic species, as well as important breeding grounds for seabirds and some marine mammals. Their ecosystems are also very vulnerable to human disturbance and particularly to introduced species, due to their small size. Island groups such as New Zealand and Hawaii have undergone substantial extinctions and losses of habitat. Since the 1950s several organisations and government agencies around the world have worked to restore islands to their original states; New Zealand has used them to hold natural populations of species that would otherwise be unable to survive in the wild. The principal components of island restoration are the removal of introduced species and the reintroduction of native species.