Herbivore and predator diversity interactively affect ecosystem
... predator richness! contrast compared treatments with monocultures at both trophic levels to the treatment with polycultures at both trophic levels (e.g. Fontaine et al. 2006). The "grazer richness * predator richness! contrast assessed whether grazer richness effects were altered by predator richnes ...
... predator richness! contrast compared treatments with monocultures at both trophic levels to the treatment with polycultures at both trophic levels (e.g. Fontaine et al. 2006). The "grazer richness * predator richness! contrast assessed whether grazer richness effects were altered by predator richnes ...
Linking Restoration and Ecological Succession (Springer
... potential benefits a closer examination of succession can provide. These benefits address both how to restore ecosystem function and structure as quickly as possible and the longer-term consequences of current restoration activities. Successfully restored ecosystems can be more or less sustainable w ...
... potential benefits a closer examination of succession can provide. These benefits address both how to restore ecosystem function and structure as quickly as possible and the longer-term consequences of current restoration activities. Successfully restored ecosystems can be more or less sustainable w ...
Leaf gas exchange responses of 13 prairie grassland
... lead to a suite of morphological and growth changes. It is well documented that increased CO2 enhances the photosynthetic rate and growth of most C3 plants (Bowes, 1993). However, ...
... lead to a suite of morphological and growth changes. It is well documented that increased CO2 enhances the photosynthetic rate and growth of most C3 plants (Bowes, 1993). However, ...
FastTracks - People Pages
... So the information received is not the greatest. But scientists must use what they have in the short amount of time they are given. Getting on the Species of Greatest Conservation Need is like qualifying for the honor role at school. You need a high enough grade point average to qualify. Likewise, t ...
... So the information received is not the greatest. But scientists must use what they have in the short amount of time they are given. Getting on the Species of Greatest Conservation Need is like qualifying for the honor role at school. You need a high enough grade point average to qualify. Likewise, t ...
COSEWIC Assessment and Update Status Report on the Ivory Gull
... plant or other organism, other than a bacterium or virus, that is wild by nature and it is either native to Canada or has extended its range into Canada without human intervention and has been present in Canada for at least 50 years. A wildlife species that no longer exists. A wildlife species no lo ...
... plant or other organism, other than a bacterium or virus, that is wild by nature and it is either native to Canada or has extended its range into Canada without human intervention and has been present in Canada for at least 50 years. A wildlife species that no longer exists. A wildlife species no lo ...
RMIT Bundoora: Wetland Management Plan
... with the exception of one species (Triglochin procerum s.l. [broad erect leaves]). This unrecognised taxa has been allocated the phrase name ‘broad erect leaves’ by Ecology Australia. An asterisk (*) preceding the plant is used to signify non-indigenous taxa, which are those that would not naturally ...
... with the exception of one species (Triglochin procerum s.l. [broad erect leaves]). This unrecognised taxa has been allocated the phrase name ‘broad erect leaves’ by Ecology Australia. An asterisk (*) preceding the plant is used to signify non-indigenous taxa, which are those that would not naturally ...
The Role of Body Size in Complex Food Webs: A Cold - ePIC
... Dynamical and structural food web models, which describe the interactions between multiple species, have often focused on the relationship between complexity and stability in ecological communities, and this approach has a long history (e.g. MacArthur, 1955; May, 1972; McCann, 2000; McCann et al., 1 ...
... Dynamical and structural food web models, which describe the interactions between multiple species, have often focused on the relationship between complexity and stability in ecological communities, and this approach has a long history (e.g. MacArthur, 1955; May, 1972; McCann, 2000; McCann et al., 1 ...
06
... recently but NRS do know of individuals at some of Dr. Hadfield's study sites further south near the old Kahuku Cabin. This area along the Summit Trail supports some of the richestAchatinella habitat in the entire Ko' olau range. On 16 March 1998, NRS visited the Crispa Rock site along the Summit Tr ...
... recently but NRS do know of individuals at some of Dr. Hadfield's study sites further south near the old Kahuku Cabin. This area along the Summit Trail supports some of the richestAchatinella habitat in the entire Ko' olau range. On 16 March 1998, NRS visited the Crispa Rock site along the Summit Tr ...
Investigation of sympatric speciation as the outcome of competition
... Table 2.1 The main characteristics of food resources for the prey individuals ................. 37 Table 2.2. Sympatric speciation criteria and chosen strategy ............................................ 39 Table 2.3. Initial number of sister species and the number of sister species that successful ...
... Table 2.1 The main characteristics of food resources for the prey individuals ................. 37 Table 2.2. Sympatric speciation criteria and chosen strategy ............................................ 39 Table 2.3. Initial number of sister species and the number of sister species that successful ...
How the proposed reintroduction of Eurasian lynx to Britain
... (Figure 1). The Trust’s proposal document (Eagle, 2015) reported the expectation that one or two sites within these areas would be selected for a “highly controlled, time limited and regulated study.” For each site, it is proposed that this would involve the release of up to six lynx, which would be ...
... (Figure 1). The Trust’s proposal document (Eagle, 2015) reported the expectation that one or two sites within these areas would be selected for a “highly controlled, time limited and regulated study.” For each site, it is proposed that this would involve the release of up to six lynx, which would be ...
4-habitat-and-niche
... exclusion principle does not apply? Expleain. • The competitive exclusion principle only applies if the 2 species live in the same habitat AND occupy the same niche • A niche includes – Food type – Abiotic conditions – Behavior • These two species use the same food resource but occupy different nich ...
... exclusion principle does not apply? Expleain. • The competitive exclusion principle only applies if the 2 species live in the same habitat AND occupy the same niche • A niche includes – Food type – Abiotic conditions – Behavior • These two species use the same food resource but occupy different nich ...
OIKOS Finland conference for Ecologists and Evolutionary Biologists
... efficient restoration measures across ecosystems. Finally, by showing results from a national restoration prioritization work (ELITE-project), I will conclude that to obtain a scientifically justified 15% reduction in the degradation of ecosystems we need to apply heavy restoration measures across v ...
... efficient restoration measures across ecosystems. Finally, by showing results from a national restoration prioritization work (ELITE-project), I will conclude that to obtain a scientifically justified 15% reduction in the degradation of ecosystems we need to apply heavy restoration measures across v ...
Mammalian Predators of the Larch Sawfly in Eastern Manitoba```
... The small mammal species frequenting sawfiy-infested tamarack stands are listed. It was found that 12 species feed upon cocoons of this insect in a confined universe. Of these, Sorex cinereus, the cinereous shrew, S. arcticus, the saddle-backed shrew, Clethrionomys gapperi, the red-backed vole, and ...
... The small mammal species frequenting sawfiy-infested tamarack stands are listed. It was found that 12 species feed upon cocoons of this insect in a confined universe. Of these, Sorex cinereus, the cinereous shrew, S. arcticus, the saddle-backed shrew, Clethrionomys gapperi, the red-backed vole, and ...
restoration of tipton kangaroo rats at kern national wildlife refuge
... Much of the habitat within their former range was displaced by agricultural, industrial, and urban development, facilitated by the completion of the Central Valley Project and the California Water Project in the early 1970’s (U.S. Fish and Wildlife Service 1998). From 1990 to 1996 alone, approximate ...
... Much of the habitat within their former range was displaced by agricultural, industrial, and urban development, facilitated by the completion of the Central Valley Project and the California Water Project in the early 1970’s (U.S. Fish and Wildlife Service 1998). From 1990 to 1996 alone, approximate ...
habitat connectivity for carnivores in mediterranean landscapes
... fragmentation, although mongoose movement may be limited to shorter distances when landscape connectivity is low. Roads, on the other hand, appear to be selectively permeable and may act as filters to movement. On average, 47 carnivores/100 km/year were road-killed, with red fox suffering the highes ...
... fragmentation, although mongoose movement may be limited to shorter distances when landscape connectivity is low. Roads, on the other hand, appear to be selectively permeable and may act as filters to movement. On average, 47 carnivores/100 km/year were road-killed, with red fox suffering the highes ...
Functional diversity - Centre d`étude de la forêt
... organisms, just as taxonomic and phylogenetic classifications are. It is at the lower levels of the hierarchy where functional diversity might be best focused rather than the higher levels where species differ fundamentally in their energy source. The functional differences above mostly concern spec ...
... organisms, just as taxonomic and phylogenetic classifications are. It is at the lower levels of the hierarchy where functional diversity might be best focused rather than the higher levels where species differ fundamentally in their energy source. The functional differences above mostly concern spec ...
Mexico - Seafood Watch
... increase production in the long-term without jeopardizing the structure or function of affected ecosystems. Seafood Watch® makes its science-based recommendations available to the public in the form of regional pocket guides that can be downloaded from www.seafoodwatch.org. The program’s goals are t ...
... increase production in the long-term without jeopardizing the structure or function of affected ecosystems. Seafood Watch® makes its science-based recommendations available to the public in the form of regional pocket guides that can be downloaded from www.seafoodwatch.org. The program’s goals are t ...
Ecological Problems With Iowa`s Invasive and Introduced Fishes
... Key sources of information on Iowa's introduced fishes include the biennial reports of the Iowa fish commissioners to the Iowa General Assembly from 1876 through 1967 (e.g., Evans et al. 1876, Shaw 1878, and Speaker 1965), species accounts and other information in the various editions of Iowa Fish a ...
... Key sources of information on Iowa's introduced fishes include the biennial reports of the Iowa fish commissioners to the Iowa General Assembly from 1876 through 1967 (e.g., Evans et al. 1876, Shaw 1878, and Speaker 1965), species accounts and other information in the various editions of Iowa Fish a ...
EVALUATION OF ECOLOGICAL RISK TO POPULATIONS OF A
... At present, the risk to the rare, federally listed Pitcher’s thistle (Cirsium pitcheri) in North America from Rhinocyllus conicus, a biological control weevil now feeding on many native thistles, is unknown. We hypothesized that quantification of host specificity and potential phenological overlap b ...
... At present, the risk to the rare, federally listed Pitcher’s thistle (Cirsium pitcheri) in North America from Rhinocyllus conicus, a biological control weevil now feeding on many native thistles, is unknown. We hypothesized that quantification of host specificity and potential phenological overlap b ...
When predators go missing – rise of the herbivores
... mesopredators are extinct or their populations are reduced and fragmented. Their problems are compounded by having competitive human-adapted novel mesopredators: the fox and cat. Here we explore the role of vertebrate top predators and mesopredators in regulating terrestrial ecosystems by controllin ...
... mesopredators are extinct or their populations are reduced and fragmented. Their problems are compounded by having competitive human-adapted novel mesopredators: the fox and cat. Here we explore the role of vertebrate top predators and mesopredators in regulating terrestrial ecosystems by controllin ...
The Role of Economic and Social Factors Driving Predator Control
... every year or only occasionally. In addition, game managers can also request special permits to eliminate feral cats (Felis catus) and dogs (Canis lupus familiaris). In general, foxes and magpies are the main species legally subjected to control by game managers in central Spain (Ríos-Saldaña 2010). ...
... every year or only occasionally. In addition, game managers can also request special permits to eliminate feral cats (Felis catus) and dogs (Canis lupus familiaris). In general, foxes and magpies are the main species legally subjected to control by game managers in central Spain (Ríos-Saldaña 2010). ...
Fall/Winter 2016 - Galapagos Conservancy
... Restoration Initiative (GTRI) team in the Islands. We hear from two of our Galapagos oldtimers, James Gibbs and Wacho Tapia, on their return to Española and Santa Fe Islands respectively to review and monitor earlier restoration efforts. But these “sabios viejos” (wise elders) are joined by the next ...
... Restoration Initiative (GTRI) team in the Islands. We hear from two of our Galapagos oldtimers, James Gibbs and Wacho Tapia, on their return to Española and Santa Fe Islands respectively to review and monitor earlier restoration efforts. But these “sabios viejos” (wise elders) are joined by the next ...
effects of interspecific competition and multiple predators
... fundamental activities, such as feeding and mating, prey should greatly benefit from an ability to adjust their level of vigilance to the variation in the current level of risk. It seems that many animals possess this ability (Kats and Dill 1998). The “predation risk allocation hypothesis” by Lima a ...
... fundamental activities, such as feeding and mating, prey should greatly benefit from an ability to adjust their level of vigilance to the variation in the current level of risk. It seems that many animals possess this ability (Kats and Dill 1998). The “predation risk allocation hypothesis” by Lima a ...
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.