DODSON, STANLEY Predicting crustacean zooplankton species
... pelagic crustaceans, even rare species. The following is a brief description of the criteria used for choosing species; more complete information, including a justification of the criteria used, the species lists, and the literature cited, is available on request (Dodson 1992). Each species list inc ...
... pelagic crustaceans, even rare species. The following is a brief description of the criteria used for choosing species; more complete information, including a justification of the criteria used, the species lists, and the literature cited, is available on request (Dodson 1992). Each species list inc ...
Ecological Observations of Some Common Antipatharian Corals in
... followed an inverse relationship between the abundance of black corals and stony corals. Particularly, both the unbranched forms (Cirrhipathes and Stichopathes) and the bottlebrush forms (Cupressopathes) lived in exposed habitats where strong currents flow from varying directions. The most common si ...
... followed an inverse relationship between the abundance of black corals and stony corals. Particularly, both the unbranched forms (Cirrhipathes and Stichopathes) and the bottlebrush forms (Cupressopathes) lived in exposed habitats where strong currents flow from varying directions. The most common si ...
Parasites that change predator or prey behaviour can have keystone
... other [9]. The invasive amphipod Gammarus pulex is a strong intraguild predator; however, parasitic infection alters both attack rates for intraguild predators and consumption of intraguild prey. For instance, Echinorhynchus truttae (Acanthocephala) infection increases maximal predation rates (funct ...
... other [9]. The invasive amphipod Gammarus pulex is a strong intraguild predator; however, parasitic infection alters both attack rates for intraguild predators and consumption of intraguild prey. For instance, Echinorhynchus truttae (Acanthocephala) infection increases maximal predation rates (funct ...
Darkling Beetles (Coleoptera: Tenebrionidae) of Canadian Grasslands
... highest diversity. The darkling beetle fauna of Canadian grasslands is quite distinctive and comprises 31 species (Tables 1 and 2). Darkling beetles occur in most terrestrial habitats, from high latitudes in Canada and Alaska to the hottest deserts (Matthews and Bouchard 2008; Matthews et al. 2010; ...
... highest diversity. The darkling beetle fauna of Canadian grasslands is quite distinctive and comprises 31 species (Tables 1 and 2). Darkling beetles occur in most terrestrial habitats, from high latitudes in Canada and Alaska to the hottest deserts (Matthews and Bouchard 2008; Matthews et al. 2010; ...
Section 4: Population Samplings
... Humans can remove or alter the constraints on population sizes, with both good and bad consequences. On the negative side, about 17% of the 1500 introduced insect species require the use of pesticides to control them. For example, African killer bees are expanding their population and migrating from ...
... Humans can remove or alter the constraints on population sizes, with both good and bad consequences. On the negative side, about 17% of the 1500 introduced insect species require the use of pesticides to control them. For example, African killer bees are expanding their population and migrating from ...
Teacher Resource Guide
... A species is considered endangered when there are so few of its kind left that they run the risk of extinction. Both plants and animals can be endangered. There are many factors that can lead to an animal becoming endangered, including both natural and human impacts. For example, loss of habitat is ...
... A species is considered endangered when there are so few of its kind left that they run the risk of extinction. Both plants and animals can be endangered. There are many factors that can lead to an animal becoming endangered, including both natural and human impacts. For example, loss of habitat is ...
Bhutan predators
... component of the ecosystem and the subject of a considerable lobby in the developed world. As a consequence, newly free countries with shaky economies came under strong pressure to declare PAs and to prevent hunters killing wildlife, irrespective of its impact on livelihoods. The effects of this hav ...
... component of the ecosystem and the subject of a considerable lobby in the developed world. As a consequence, newly free countries with shaky economies came under strong pressure to declare PAs and to prevent hunters killing wildlife, irrespective of its impact on livelihoods. The effects of this hav ...
Population characteristics
... - Extremely good at what they do, but vulnerable to change • Generalists = species with broad niches that can use a wide array of habitats and resources - Able to live in many different places Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings ...
... - Extremely good at what they do, but vulnerable to change • Generalists = species with broad niches that can use a wide array of habitats and resources - Able to live in many different places Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings ...
Wildlife Module - Forests Ontario
... by humans for food or bait. Only animals native to the country are usually considered wildlife and domesticated animals that have become wild, or feral, are usually not included. The term wildlife is arbitrary depending upon who is using it. Today most government wildlife management agencies in Cana ...
... by humans for food or bait. Only animals native to the country are usually considered wildlife and domesticated animals that have become wild, or feral, are usually not included. The term wildlife is arbitrary depending upon who is using it. Today most government wildlife management agencies in Cana ...
First Black-footed Ferret Born in New Mexico in 75 years
... for the first time in approximately 10,000 years, three new bolson tortoises hatched out of their eggshells and scurried for cover in their new Chihuahuan desert home. Earlier in the summer their mother had carefully buried the eggs on Ted Turner’s Armendaris Ranch in south-central New Mexico. The h ...
... for the first time in approximately 10,000 years, three new bolson tortoises hatched out of their eggshells and scurried for cover in their new Chihuahuan desert home. Earlier in the summer their mother had carefully buried the eggs on Ted Turner’s Armendaris Ranch in south-central New Mexico. The h ...
Invasive Fish in the Murray- Darling Basin
... Rapid response capacity Manage existing problems Target communications & engagement & capacity building • Due for completion in 2011 ...
... Rapid response capacity Manage existing problems Target communications & engagement & capacity building • Due for completion in 2011 ...
Leptocerus interruptus - Acta Zoologica Bulgarica
... Richardson 2002). Therefore, species-level identification tools and autecological data on habitat preferences are crucial and are currently re-evaluated. According to the Water Framework Directive, an assessment of aquatic ecosystems is primarily based on both the identification of types in all cate ...
... Richardson 2002). Therefore, species-level identification tools and autecological data on habitat preferences are crucial and are currently re-evaluated. According to the Water Framework Directive, an assessment of aquatic ecosystems is primarily based on both the identification of types in all cate ...
Summary - Yellowstone to Yukon Conservation Initiative
... occupancy and connectivity among species, with significant changes apparent among scenarios. Absolute reductions in regional landscape effectiveness among species range from 7% to 47% at present to a projected loss of between 11% and 55% in 25 years. Within the local assessment area, the reduction i ...
... occupancy and connectivity among species, with significant changes apparent among scenarios. Absolute reductions in regional landscape effectiveness among species range from 7% to 47% at present to a projected loss of between 11% and 55% in 25 years. Within the local assessment area, the reduction i ...
Species, Functional Groups, and Thresholds in Ecological Resilience
... Birds are clearly not the only taxonomic group that contributes to the resilience of grassland ecosystems, but they are useful subjects of analyses because data sets on birds are large and the information available regarding their presence and absence, diet, and foraging habits is of high quality. ...
... Birds are clearly not the only taxonomic group that contributes to the resilience of grassland ecosystems, but they are useful subjects of analyses because data sets on birds are large and the information available regarding their presence and absence, diet, and foraging habits is of high quality. ...
BIOLOGICAL WEED CONTROL VIA NUTRIENT COMPETITION: POTASSIUM LIMITATION OF DANDELIONS E A. T
... Abstract. Weedy plants are often controlled by the application of herbicides. Here we explore an alternative method of control. We suggest that the abundance of an undesired plant species (here dandelions: Taraxacum officinale) may be controlled by modifying interspecific competition via changes in ...
... Abstract. Weedy plants are often controlled by the application of herbicides. Here we explore an alternative method of control. We suggest that the abundance of an undesired plant species (here dandelions: Taraxacum officinale) may be controlled by modifying interspecific competition via changes in ...
The Spread, Effect and Mitigation of Bullfrogs
... A study done by Hayes and Jennings indicates bullfrogs may not be the cause Habitat loss, fragmentation and pollution may also be factors Other predators may also be to ...
... A study done by Hayes and Jennings indicates bullfrogs may not be the cause Habitat loss, fragmentation and pollution may also be factors Other predators may also be to ...
pdf - Gunnar Brehm
... larger than the observed numbers in all three taxa. The estimate ranges from 29% (Larentiinae, site 11a) to 218% (Ennominae, site 8b) larger than the recorded species number. Figure 2A shows extrapolation results for Geometridae, Ennominae and Larentiinae for all 22 sites. For Geometridae, estimates ...
... larger than the observed numbers in all three taxa. The estimate ranges from 29% (Larentiinae, site 11a) to 218% (Ennominae, site 8b) larger than the recorded species number. Figure 2A shows extrapolation results for Geometridae, Ennominae and Larentiinae for all 22 sites. For Geometridae, estimates ...
Food web assembly rules
... must be part of a non-overlapping pairing. We define a non-overlapping pairing as a topological pattern for a directed network, where each species must contribute to a closed loop and none of the loops may overlap (Details: Methods). Mathematically, this is a consequence of demanding that the determ ...
... must be part of a non-overlapping pairing. We define a non-overlapping pairing as a topological pattern for a directed network, where each species must contribute to a closed loop and none of the loops may overlap (Details: Methods). Mathematically, this is a consequence of demanding that the determ ...
O. triseriatus
... ● We determined species (Ochlerotatus triseriatus, Aedes albopictus) and developmental-specific prey vulnerability to a size-limited predatory midge Corethrella appendiculata. ● Prey vulnerability was determined by measuring prey survival for combinations of the two mosquito species and developmenta ...
... ● We determined species (Ochlerotatus triseriatus, Aedes albopictus) and developmental-specific prey vulnerability to a size-limited predatory midge Corethrella appendiculata. ● Prey vulnerability was determined by measuring prey survival for combinations of the two mosquito species and developmenta ...
Plant diversity increases resistance to invasion in the absence of
... tectorum and Digitaria ischaemum, thus small and large plants flowered at similar times. We specifically focused on testing the competitionbased mechanism proposed by Elton and others that high levels of resident diversity reduce invasibility because they generate a greater competitive environment ...
... tectorum and Digitaria ischaemum, thus small and large plants flowered at similar times. We specifically focused on testing the competitionbased mechanism proposed by Elton and others that high levels of resident diversity reduce invasibility because they generate a greater competitive environment ...
Biomes Powerpoint - Helena High School
... page 64 to 65 to review the levels of organization from individual species to the biosphere. Use pages 110 1) Look at levels of organization on page 64 and review terms. 2) Review information about the biomes on page 110 to 121. 3) Set up the poster to represent two biomes-columns, circles, etc. The ...
... page 64 to 65 to review the levels of organization from individual species to the biosphere. Use pages 110 1) Look at levels of organization on page 64 and review terms. 2) Review information about the biomes on page 110 to 121. 3) Set up the poster to represent two biomes-columns, circles, etc. The ...
A new parameterization for estimating co
... We develop the model using a hierarchical (or statespace) formulation that includes distinct components for species occurrence and species detection given occurrence. This approach allows us to build models of predator and prey species occurrences and their potential ecological determinants (e.g., h ...
... We develop the model using a hierarchical (or statespace) formulation that includes distinct components for species occurrence and species detection given occurrence. This approach allows us to build models of predator and prey species occurrences and their potential ecological determinants (e.g., h ...
Mobulid Rays Reef Manta and Devil Rays
... seas in fragmented and sparsely distributed populations. They migrate across national boundaries, feeding on small fish and plankton, which they filter through prebranchial appendages known as gill plates. Mobulids are thought to be among the world’s least fecund marine fish. Their vulnerability to ...
... seas in fragmented and sparsely distributed populations. They migrate across national boundaries, feeding on small fish and plankton, which they filter through prebranchial appendages known as gill plates. Mobulids are thought to be among the world’s least fecund marine fish. Their vulnerability to ...
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.