Download Niche partitioning based on diet analysis of three introduced rodents in Hawaiian montane forest
... arthropod for mice. Rodents may be dispersing some native and non-native seeds, including the highly invasive Clidemia hirta, because intact seeds were found in some of the stomachs of all three species. Fruit pulp comprised 55% of the black rat diet, 41% of the Pacific rat diet, but only 11% of the ...
... arthropod for mice. Rodents may be dispersing some native and non-native seeds, including the highly invasive Clidemia hirta, because intact seeds were found in some of the stomachs of all three species. Fruit pulp comprised 55% of the black rat diet, 41% of the Pacific rat diet, but only 11% of the ...
Could controlling mammalian carnivores lead to mesopredator
... as a keystone predator as it consumes the largest array of reptile species including three other species of Varanus, as well as its own kind. Instances of varanids being used for pest control have been documented, several of which attest to their impact on prey populations. Varanus rosenbergi were r ...
... as a keystone predator as it consumes the largest array of reptile species including three other species of Varanus, as well as its own kind. Instances of varanids being used for pest control have been documented, several of which attest to their impact on prey populations. Varanus rosenbergi were r ...
Cats and Wildlife A Conservation Dilemma
... been involved in the extinction of more bird species than any other cause, except habitat destruction. Cats are contributing to the endangerment of populations of birds such as Least Terns, Piping Plovers and Loggerhead Shrikes. In Florida, marsh rabbits in Key West have been threatened by predation ...
... been involved in the extinction of more bird species than any other cause, except habitat destruction. Cats are contributing to the endangerment of populations of birds such as Least Terns, Piping Plovers and Loggerhead Shrikes. In Florida, marsh rabbits in Key West have been threatened by predation ...
Extinction and the zoogeography of West Indian land mammals
... Several terms used throughout the paper are clarified here to eliminate any confusion regarding their meaning. ‘West Indies’ is used in a zoogeographic sense following the classification of Hershkovitz (1958), in which the West Indies is considered a subregion of the Neotropical Region. The West Ind ...
... Several terms used throughout the paper are clarified here to eliminate any confusion regarding their meaning. ‘West Indies’ is used in a zoogeographic sense following the classification of Hershkovitz (1958), in which the West Indies is considered a subregion of the Neotropical Region. The West Ind ...
4.4. Common Tern Species Action Plan
... favourable condition for the species through scrub removal and creation of gravel areas or areas of open, bare earth for nesting birds. Provision of floating rafts Natural nest sites are rare on Lough Neagh, Lough Beg and Portmore Lough and, therefore, the creation of artificial nesting sites must b ...
... favourable condition for the species through scrub removal and creation of gravel areas or areas of open, bare earth for nesting birds. Provision of floating rafts Natural nest sites are rare on Lough Neagh, Lough Beg and Portmore Lough and, therefore, the creation of artificial nesting sites must b ...
Cats and Wildlife - CHS Science Department Mrs. Davis
... the extinction of more bird species than any other cause, except habitat destruction. Cats are contributing to the endangerment of populations of birds such as Least Terns, Piping Plovers and Loggerhead Shrikes. In Florida, marsh rabbits in Key West have been threatened by predation from domestic ca ...
... the extinction of more bird species than any other cause, except habitat destruction. Cats are contributing to the endangerment of populations of birds such as Least Terns, Piping Plovers and Loggerhead Shrikes. In Florida, marsh rabbits in Key West have been threatened by predation from domestic ca ...
Ecological Implications of Reptile Mesopredator Release in Arid
... some small reptiles following removal of exotic mammalian predators in a landscape-scale reserve in arid South Australia. We used counts of Sand Goanna (Varanus gouldii) tracks and diggings as a surrogate activity index in paddock-scale treatments with different assemblages of feral predators and re ...
... some small reptiles following removal of exotic mammalian predators in a landscape-scale reserve in arid South Australia. We used counts of Sand Goanna (Varanus gouldii) tracks and diggings as a surrogate activity index in paddock-scale treatments with different assemblages of feral predators and re ...
Harvest Mouse Fact Sheet
... insectivore mix is added once a week. At present no live foods are provided. This may be considered in the future as in the wild insects constitute a high percentage of the diet. A small dish of water or water bottle is also provided. ...
... insectivore mix is added once a week. At present no live foods are provided. This may be considered in the future as in the wild insects constitute a high percentage of the diet. A small dish of water or water bottle is also provided. ...
seabird community structure along a productivity gradient
... mechanisms does this structuring take place? Historically, marine ornithologists have found that changes in water mass characteristics can affect the prey base such that prey species and, therefore, predator species will change (reviews by Brown 1980, Hunt 1990). In this paper, we will demonstrate h ...
... mechanisms does this structuring take place? Historically, marine ornithologists have found that changes in water mass characteristics can affect the prey base such that prey species and, therefore, predator species will change (reviews by Brown 1980, Hunt 1990). In this paper, we will demonstrate h ...
black-flanked rock-wallaby (Petrogale lateralis lateralis)
... Petrogale lateralis lateralis is the subspecies which has suffered the largest known range decline. Predation by foxes is known to have reduced populations in the Wheat belt and on Depuch Island, and is presumed to be the main cause of the local extinctions of most other Petrogale lateralis laterali ...
... Petrogale lateralis lateralis is the subspecies which has suffered the largest known range decline. Predation by foxes is known to have reduced populations in the Wheat belt and on Depuch Island, and is presumed to be the main cause of the local extinctions of most other Petrogale lateralis laterali ...
- Wiley Online Library
... difficult to predict. Wildlife managers must consider such interactions when planning predator control programmes. Integrated predator control will require a greater understanding of the complex relationships between species. In many parts of the world, sympatric species of carnivores have coexisted o ...
... difficult to predict. Wildlife managers must consider such interactions when planning predator control programmes. Integrated predator control will require a greater understanding of the complex relationships between species. In many parts of the world, sympatric species of carnivores have coexisted o ...
House Cats as Predators in the Australian Environment: Impacts and
... In the suburban habitats, all “other rodents” ingested were introduced black rats (Rattus rattus), whereas in the forest habitats all “other rodents” taken were probably native bush rats (R. fuscipes). ...
... In the suburban habitats, all “other rodents” ingested were introduced black rats (Rattus rattus), whereas in the forest habitats all “other rodents” taken were probably native bush rats (R. fuscipes). ...
Gymnesic Islands, Western Mediterranean
... only A. hidalgoi. Nevertheless, no taphonomic biases that may have originated from selective predation or even by specific behaviour and ecology were adequately considered by these authors. On the other hand, the accuracy of the reported stratigraphy of some deposits from Mallorca, usually considere ...
... only A. hidalgoi. Nevertheless, no taphonomic biases that may have originated from selective predation or even by specific behaviour and ecology were adequately considered by these authors. On the other hand, the accuracy of the reported stratigraphy of some deposits from Mallorca, usually considere ...
House cats as predators in the Australian
... In the suburban habitats, all “other rodents” ingested were introduced black rats (Rattus rattus), whereas in the forest habitats all “other rodents” taken were probably native bush rats (R. fuscipes). ...
... In the suburban habitats, all “other rodents” ingested were introduced black rats (Rattus rattus), whereas in the forest habitats all “other rodents” taken were probably native bush rats (R. fuscipes). ...
population status and diet of the yellow
... in 2004, at Ilhéu das Lagoinhas (95 pairs) on the northern coast. In 2003 a gull nest had also been found on a smaller sea stack nearby Ilhéu das Lagoinhas but the gulls did not use this site in 2004. This stack has been used by both Common and Roseate Terns in the past. Also on Santa Maria and in 2 ...
... in 2004, at Ilhéu das Lagoinhas (95 pairs) on the northern coast. In 2003 a gull nest had also been found on a smaller sea stack nearby Ilhéu das Lagoinhas but the gulls did not use this site in 2004. This stack has been used by both Common and Roseate Terns in the past. Also on Santa Maria and in 2 ...
research applied to the conservation of seabirds breeding on
... European storm-petrel Hydrobates pelagicus, Audouin’s gull Larus audouinii, yellowlegged gull Larus cachinnans and Eleonora’s falcon Falco eleonorae, a raptor breeding exclusively on Mediterranean islands. Despite having several insular species breeding on the same island, the aim of this thesis was ...
... European storm-petrel Hydrobates pelagicus, Audouin’s gull Larus audouinii, yellowlegged gull Larus cachinnans and Eleonora’s falcon Falco eleonorae, a raptor breeding exclusively on Mediterranean islands. Despite having several insular species breeding on the same island, the aim of this thesis was ...
Regulatory Strategy for the Designation of the Proposed Scott
... seabird populations were previously estimated at approximately 2.2 million; almost 2 million of these were Cassin’s Auklet. Since those estimates were made in the late 1990s, Cassin’s Auklet and Common Murre have declined significantly, suggesting a total breeding population of all species of about ...
... seabird populations were previously estimated at approximately 2.2 million; almost 2 million of these were Cassin’s Auklet. Since those estimates were made in the late 1990s, Cassin’s Auklet and Common Murre have declined significantly, suggesting a total breeding population of all species of about ...
Biological Control of Aleutian Island Arctic Fox
... arctic fox. Alaska trappers consider red foxes to be one of the primary predators of arctic fox (Chesemore, 1975). Marsh (1938) found that red foxes often attacked and killed trapped arctic foxes. Fur farmers noted that if arctic and red fox were placed on the same island the arctic fox ...
... arctic fox. Alaska trappers consider red foxes to be one of the primary predators of arctic fox (Chesemore, 1975). Marsh (1938) found that red foxes often attacked and killed trapped arctic foxes. Fur farmers noted that if arctic and red fox were placed on the same island the arctic fox ...
Abundance and Diets of Rats in Two Native
... particularly insect larvae, were the most frequently found and abundant food item in the stomachs of both rat species. Consumption of these prey by rats was higher in winter than in summer. Black rats ate more fruits, seeds, and other vegetation than did Polynesian rats. More information about the l ...
... particularly insect larvae, were the most frequently found and abundant food item in the stomachs of both rat species. Consumption of these prey by rats was higher in winter than in summer. Black rats ate more fruits, seeds, and other vegetation than did Polynesian rats. More information about the l ...
Methods to control and eradicate non
... 7. monitoring of effort, costs and results to allow for corrections; 8. monitoring of eradication and of recovery of native communities; 9. some level of collateral effects should be accepted, respecting priorities. The following methods may be employed alone or alternatively in order to remove or c ...
... 7. monitoring of effort, costs and results to allow for corrections; 8. monitoring of eradication and of recovery of native communities; 9. some level of collateral effects should be accepted, respecting priorities. The following methods may be employed alone or alternatively in order to remove or c ...
Population dynamics of large and small mammals
... populations of large herbivores. Small mammal population dynamics The conjecture of Caughley and Krebs (1983) that small herbivorous mammals show intrinsic control was challenged by an array of Scandinavian researchers who, in general, postulated top-down control of small mammal numbers. If this wer ...
... populations of large herbivores. Small mammal population dynamics The conjecture of Caughley and Krebs (1983) that small herbivorous mammals show intrinsic control was challenged by an array of Scandinavian researchers who, in general, postulated top-down control of small mammal numbers. If this wer ...
Speciation, and Conservation
... In the case of habitat islands, the degree to which one area is isolated depends on the dissimilarity of the matrix surrounding it. Isolation of more remote islands may also depend on the availability of islands closer to the source that can serve as “stepping stones.” Without doubt, it is possible ...
... In the case of habitat islands, the degree to which one area is isolated depends on the dissimilarity of the matrix surrounding it. Isolation of more remote islands may also depend on the availability of islands closer to the source that can serve as “stepping stones.” Without doubt, it is possible ...
MS Word Document - 7.2 MB - Department of Environment, Land
... included in the Port Phillip Bay (Western Shoreline) and Bellarine Peninsula Ramsar Site. Over recent decades there have been significant changes to the bird communities of Mud Islands but information about these changes has not been collated or comprehensively documented. This report attempts to ac ...
... included in the Port Phillip Bay (Western Shoreline) and Bellarine Peninsula Ramsar Site. Over recent decades there have been significant changes to the bird communities of Mud Islands but information about these changes has not been collated or comprehensively documented. This report attempts to ac ...
Northern Ireland Seabird Report 2013
... Northern Fulmars (Fulmars) are one of the commonest seabirds in Britain and adult birds are present in UK waters all year round. Their food comes from a wide variety of sources including zooplankton, fish and fishing discards. An increase in the use of commercial discards has been cited as one of th ...
... Northern Fulmars (Fulmars) are one of the commonest seabirds in Britain and adult birds are present in UK waters all year round. Their food comes from a wide variety of sources including zooplankton, fish and fishing discards. An increase in the use of commercial discards has been cited as one of th ...
Numerical and functional response of feral cats
... account for the variations in the female requirements throughout the year. The available calorific value of a rodent (the field vole, Microtus agrestis) is estimated to be 1.46 Kcal g–1 of fresh weight (Hansson and Grodzinski 1970). If the mean weight of a rat, the cats’ primary prey, is assumed to ...
... account for the variations in the female requirements throughout the year. The available calorific value of a rodent (the field vole, Microtus agrestis) is estimated to be 1.46 Kcal g–1 of fresh weight (Hansson and Grodzinski 1970). If the mean weight of a rat, the cats’ primary prey, is assumed to ...
Introduced mammals on seabird breeding islands
Seabirds include some of the most threatened taxa anywhere in the world. For example, of extant albatross species, 82% are listed as threatened, endangered, or critically endangered by the International Union for Conservation of Nature. The two leading threats to seabirds are accidental bycatch by commercial fishing operations and introduced mammals on their breeding islands. Mammals are typically brought to remote islands by humans either accidentally as stowaways on ships, or deliberately for hunting, ranching, or biological control of previously introduced species. Introduced mammals have a multitude of negative effects on seabirds including direct and indirect effects. Direct effects include predation and disruption of breeding activities, and indirect effects include habitat transformation due to overgrazing and major shifts in nutrient cycling due to a halting of nutrient subsidies from seabird excrement. There are other invasive species on islands that wreak havoc on native bird populations (e.g. brown snakes on Guam), but mammals are by far the most commonly introduced species to islands and the most detrimental to breeding seabirds. Despite efforts to remove introduced mammals from these remote islands, invasive mammals are still present on roughly 80% of islands worldwide.