Recovery strategy for the American Badger
... Under the ESA, 2007, a recovery strategy provides the best available scientific knowledge onwhat is required to achieve recovery of a species. A recovery strategy outlines the habitat needs and the threats to the survival and recovery of the species. It also makes recommendations on the objectives f ...
... Under the ESA, 2007, a recovery strategy provides the best available scientific knowledge onwhat is required to achieve recovery of a species. A recovery strategy outlines the habitat needs and the threats to the survival and recovery of the species. It also makes recommendations on the objectives f ...
Are dingoes a trophic regulator in arid Australia? A comparison of
... treatment. This exploratory method calculates the average similarity between every plot in each treatment. The average similarity is then broken down into separate contributions for each species to give the average contribution, as a percentage, by each species within each group. Comparisons of the ...
... treatment. This exploratory method calculates the average similarity between every plot in each treatment. The average similarity is then broken down into separate contributions for each species to give the average contribution, as a percentage, by each species within each group. Comparisons of the ...
UNIT 2 Practice TEST
... c. Amphibians are experiencing sharp population declines in a variety of habitats. d. Amphibians eat many insects, second in number only to birds. e. They are often considered keystone species. Birds and trout make good a. nonnative species. b. native species. c. keystone species. d. indicator speci ...
... c. Amphibians are experiencing sharp population declines in a variety of habitats. d. Amphibians eat many insects, second in number only to birds. e. They are often considered keystone species. Birds and trout make good a. nonnative species. b. native species. c. keystone species. d. indicator speci ...
Geographic extent and chronology of the
... established from Miami to North Carolina since 2002. They have only recently (2009) established in the Florida Keys. Although present in Atlantic waters north of North Carolina, they are not considered established there because they are not likely to survive cold winter temperatures. Bermuda, Bahama ...
... established from Miami to North Carolina since 2002. They have only recently (2009) established in the Florida Keys. Although present in Atlantic waters north of North Carolina, they are not considered established there because they are not likely to survive cold winter temperatures. Bermuda, Bahama ...
Parasites, density, and disturbance: Factors influencing coexistence
... on C. californica include selecting for early maturation in areas of high prevalence (Lafferty 1993b ), decreased reproductive output, reduced growth rates, and increased mortality (Sousa 1983, Sousa and Gleason 1989, Lafferty 1993a); similar studies have not been conducted for B. attramentaria. Dif ...
... on C. californica include selecting for early maturation in areas of high prevalence (Lafferty 1993b ), decreased reproductive output, reduced growth rates, and increased mortality (Sousa 1983, Sousa and Gleason 1989, Lafferty 1993a); similar studies have not been conducted for B. attramentaria. Dif ...
reducing feral cat threats to native wildlife
... research interns and staff for providing invaluable assistance in gathering data. Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government. ...
... research interns and staff for providing invaluable assistance in gathering data. Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government. ...
Nine-spotted Lady Beetle (Coccinella novemnotata
... turn, this species is also subject to predation by introduced lady beetles, other invertebrates and vertebrates, and susceptible to parasitoids and pathogens. Population Sizes and Trends The historically broad geographic range and prominence of the Nine-spotted Lady Beetle stands in stark contrast t ...
... turn, this species is also subject to predation by introduced lady beetles, other invertebrates and vertebrates, and susceptible to parasitoids and pathogens. Population Sizes and Trends The historically broad geographic range and prominence of the Nine-spotted Lady Beetle stands in stark contrast t ...
An evaluation of coastal dune forest restoration in northern KwaZulu-Natal,
... of the several bird and tree species, however, responses to patch characteristics were varied and idiosyncratic. For restoration to succeed, managers need to consider the spatial configuration of the landscape to facilitate colonization of rehabilitating patches. From this thesis and previous work, ...
... of the several bird and tree species, however, responses to patch characteristics were varied and idiosyncratic. For restoration to succeed, managers need to consider the spatial configuration of the landscape to facilitate colonization of rehabilitating patches. From this thesis and previous work, ...
Problem Definition - Information Technology
... General Information: To fully understand the problems associated with the Round goby (Neogobius melanostomus) we must first explore the concept of an invasive species. Invasive species are defined by the U.S. Congress as “an alien species whose introduction does or is likely to cause economic or env ...
... General Information: To fully understand the problems associated with the Round goby (Neogobius melanostomus) we must first explore the concept of an invasive species. Invasive species are defined by the U.S. Congress as “an alien species whose introduction does or is likely to cause economic or env ...
predator accelerated replacement
... size than O. propinquus, the proportion of O. propinquus population vulnerable to predation is larger than O. rusticus. I suggest future studies regarding invasion dynamics should consider not only competition for food and shelter resources between invading and native species, but also consider dire ...
... size than O. propinquus, the proportion of O. propinquus population vulnerable to predation is larger than O. rusticus. I suggest future studies regarding invasion dynamics should consider not only competition for food and shelter resources between invading and native species, but also consider dire ...
Modeling the Impact of the African Elephant, Loxodonta africana, on
... reducing tree cover, although at an elephant density of 1.0 per square kilometer, woody plants still persist for over a century. I tested the effect of plant responses to elephant ...
... reducing tree cover, although at an elephant density of 1.0 per square kilometer, woody plants still persist for over a century. I tested the effect of plant responses to elephant ...
Standard PDF - Wiley Online Library
... probability of carcass removal by vertebrates was higher for large than for small rodent carcasses. These authors suggested that this is because larger carcasses are more conspicuous (i.e. easier to find) and comparatively less exploited by decomposers due to a lower surface:volume ratio. These patt ...
... probability of carcass removal by vertebrates was higher for large than for small rodent carcasses. These authors suggested that this is because larger carcasses are more conspicuous (i.e. easier to find) and comparatively less exploited by decomposers due to a lower surface:volume ratio. These patt ...
effects of algal and herbivore diversity on the partitioning of biomass
... culture type, herbivore presence/absence, and their interactions, on algal biovolume. Planned orthogonal contrasts compared the biovolume of each species in the presence vs. absence of herbivores, in mono- vs. polyculture in the absence of herbivores, and in monovs. polyculture in the presence of he ...
... culture type, herbivore presence/absence, and their interactions, on algal biovolume. Planned orthogonal contrasts compared the biovolume of each species in the presence vs. absence of herbivores, in mono- vs. polyculture in the absence of herbivores, and in monovs. polyculture in the presence of he ...
In search of operational trophospecies in a tropical aquatic ,food web
... trophic activity, then we need to explore alternative ways in which these two aspects interact. One can Original trophicentities imagine casesin which the composition of an animal's The ideal trophic data would be resolved to the biolog- diet might influencethe composition of its set of predaical sp ...
... trophic activity, then we need to explore alternative ways in which these two aspects interact. One can Original trophicentities imagine casesin which the composition of an animal's The ideal trophic data would be resolved to the biolog- diet might influencethe composition of its set of predaical sp ...
restoration of tall fescue pastures to native warm season grasslands
... the success of planted native species might be impacted via indirect soil effects. My overall hypotheses were that E+ plants would recover from restoration/eradication efforts better than E- plants, and that E+ fescue would reduce microbial symbionts in the soil needed by planted native species. I f ...
... the success of planted native species might be impacted via indirect soil effects. My overall hypotheses were that E+ plants would recover from restoration/eradication efforts better than E- plants, and that E+ fescue would reduce microbial symbionts in the soil needed by planted native species. I f ...
Aligning molecular studies of mycorrhizal fungal diversity
... currently underway. Most published studies, at best, only address species or genera-level resolution. However, several experimental studies indicate that variation in plant performance is large among plants colonised by different individuals of one AMF species. Thus, there is a potential disparity b ...
... currently underway. Most published studies, at best, only address species or genera-level resolution. However, several experimental studies indicate that variation in plant performance is large among plants colonised by different individuals of one AMF species. Thus, there is a potential disparity b ...
Variation in the feeding of four species of seabird on Machias Seal
... chicks in their bill, allowing for unobtrusive prey identification and quantification. We used ten years of data from four species of seabird, Arctic Tern (Sterna paradisaea), Common Tern (S. hirundo), Atlantic Puffin (Fratercula arctica), and Razorbill (Alca torda) on Machias Seal Island, NB, to ex ...
... chicks in their bill, allowing for unobtrusive prey identification and quantification. We used ten years of data from four species of seabird, Arctic Tern (Sterna paradisaea), Common Tern (S. hirundo), Atlantic Puffin (Fratercula arctica), and Razorbill (Alca torda) on Machias Seal Island, NB, to ex ...
Conservation issues for Darwin`s finches in the Galápagos
... Relaxed selection for mate choice: the mechanism for hybridisation .................... 148! Outcompeting parasites: the function of hybridisation ........................................... 149! Conclusion ............................................................................................. ...
... Relaxed selection for mate choice: the mechanism for hybridisation .................... 148! Outcompeting parasites: the function of hybridisation ........................................... 149! Conclusion ............................................................................................. ...
Ensis directus
... The American razor clam is known as Ensis directus (Conrad, 1843) in its native area, and this is also what is was called when it was first introduced to Europe (Von Cosel et al., 1982). However, further studies showed that this name was based on a fossil and presumably extinct species (van Urk, 197 ...
... The American razor clam is known as Ensis directus (Conrad, 1843) in its native area, and this is also what is was called when it was first introduced to Europe (Von Cosel et al., 1982). However, further studies showed that this name was based on a fossil and presumably extinct species (van Urk, 197 ...
THE FORAGING ECOLOGY, HABITAT USE, AND
... individuals showed strong site fidelity during the tracking period, but habitat selection varied between individuals. Mean home range size was 9.78 ha (SE 2.6) using the fixed kernel estimator (95% kernel; 15 birds with >25 locations). Foraging was strongly influenced by time of day: birds spent onl ...
... individuals showed strong site fidelity during the tracking period, but habitat selection varied between individuals. Mean home range size was 9.78 ha (SE 2.6) using the fixed kernel estimator (95% kernel; 15 birds with >25 locations). Foraging was strongly influenced by time of day: birds spent onl ...
Linking modern coexistence theory and contemporary niche theory
... intersect, the ecological implications of which is that each species is a better competitor for a different resource. Second, each species must have a r elatively greater impact on the resource it finds most limiting. Third, the supply ratio of the two resources must not disproportionately favou ...
... intersect, the ecological implications of which is that each species is a better competitor for a different resource. Second, each species must have a r elatively greater impact on the resource it finds most limiting. Third, the supply ratio of the two resources must not disproportionately favou ...
3. MANAGING CRESTED WHEATGRASS in Native
... wheatgrass, it exploits any available moisture in drought situations and recovers from drought faster than many native species. • Prolific seed production: Seeds remain viable in the soil for up to five years, which allows the number of seeds in the soil to accumulate. Crested wheatgrass stands in s ...
... wheatgrass, it exploits any available moisture in drought situations and recovers from drought faster than many native species. • Prolific seed production: Seeds remain viable in the soil for up to five years, which allows the number of seeds in the soil to accumulate. Crested wheatgrass stands in s ...
06
... NRS surveyed the areas south of the Poamoho Stream on a ridge where d’Alte Welch had recorded snails during the 1930s. Much of this habitat looked promising for snails, but the end result was the usual one; searching so far from the summit at lower elevations is very unlikely to yield snails. No add ...
... NRS surveyed the areas south of the Poamoho Stream on a ridge where d’Alte Welch had recorded snails during the 1930s. Much of this habitat looked promising for snails, but the end result was the usual one; searching so far from the summit at lower elevations is very unlikely to yield snails. No add ...
Hwang 1 The Effects of Acanthaster planci Species on
... rate is fairly successful, which then affects their population size, which, in large numbers has detrimental effects on other marine organisms, especially the coral on which they live and feed on. This species thrive while others are at a larger risk of becoming endangered because of the feeding and ...
... rate is fairly successful, which then affects their population size, which, in large numbers has detrimental effects on other marine organisms, especially the coral on which they live and feed on. This species thrive while others are at a larger risk of becoming endangered because of the feeding and ...
Effects of seagrass landscape structure, structural complexity and
... (Ruppia maritima) and minor amounts of macroalgae. Seagrass coverage ranged from highly patchy (13% cover) dune-like beds to continuous (100% cover) low-relief beds within 18 replicate 50 × 50 m plots. Twelve species (8 decapods and 4 fishes) made up 95% or more of the catch, and densities of nearly ...
... (Ruppia maritima) and minor amounts of macroalgae. Seagrass coverage ranged from highly patchy (13% cover) dune-like beds to continuous (100% cover) low-relief beds within 18 replicate 50 × 50 m plots. Twelve species (8 decapods and 4 fishes) made up 95% or more of the catch, and densities of nearly ...
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.