468-HBRC54 - Envirolink
... been completely eradicated from a number of New Zealand’s islands. While benefits to native wildlife have often resulted from these actions (summarised in Dickman 1996), the fact that other predators (primarily mustelids) were present and were eradicated or controlled along with cats makes it diffic ...
... been completely eradicated from a number of New Zealand’s islands. While benefits to native wildlife have often resulted from these actions (summarised in Dickman 1996), the fact that other predators (primarily mustelids) were present and were eradicated or controlled along with cats makes it diffic ...
Feral Cat Predation and It`s Effects on Wildlife
... So, what has been learned from all the conflicting studies of cat predation? What do we know now about cat predation in general? First, multiple studies have found that 36-56% of owned cats hunt (Fougere, 2000; Perry 1999; Reark, 1994). The amount of prey caught varies widely between individual cats ...
... So, what has been learned from all the conflicting studies of cat predation? What do we know now about cat predation in general? First, multiple studies have found that 36-56% of owned cats hunt (Fougere, 2000; Perry 1999; Reark, 1994). The amount of prey caught varies widely between individual cats ...
Santa Clara Island was first censused in the 2001-2
... we deployed seven dummy and five active Lotek geolocator tags to breeding pink-footed shearwaters in March 2003. These lightweight tags measure light level, temperature and pressure. Light levels can be used to calculate geographic position although the accuracy is considerably less than that of sat ...
... we deployed seven dummy and five active Lotek geolocator tags to breeding pink-footed shearwaters in March 2003. These lightweight tags measure light level, temperature and pressure. Light levels can be used to calculate geographic position although the accuracy is considerably less than that of sat ...
Four decades of research on the Medes Islands
... the communities [16,17]. That was why the continuous monitoring through time of the preservation effects quickly rendered dramatic results concerning the population recovery of some species previously exploited (mainly fish). The synergistic aspect is related to the scientific monitoring of the pres ...
... the communities [16,17]. That was why the continuous monitoring through time of the preservation effects quickly rendered dramatic results concerning the population recovery of some species previously exploited (mainly fish). The synergistic aspect is related to the scientific monitoring of the pres ...
The Ecological Role of the Mammalian Mesocarnivore
... Carnivora) are ecologically important because a few individuals can cause strong predation-driven direct effects or fear-driven indirect effects on communities and ecosystems (Ripple and Beschta 2004, Ray et al. 2005). Nevertheless, most carnivores are neither large nor at the apex of their ecologic ...
... Carnivora) are ecologically important because a few individuals can cause strong predation-driven direct effects or fear-driven indirect effects on communities and ecosystems (Ripple and Beschta 2004, Ray et al. 2005). Nevertheless, most carnivores are neither large nor at the apex of their ecologic ...
The Ecological Role of the Mammalian Mesocarnivore
... Carnivora) are ecologically important because a few individuals can cause strong predation-driven direct effects or fear-driven indirect effects on communities and ecosystems (Ripple and Beschta 2004, Ray et al. 2005). Nevertheless, most carnivores are neither large nor at the apex of their ecologic ...
... Carnivora) are ecologically important because a few individuals can cause strong predation-driven direct effects or fear-driven indirect effects on communities and ecosystems (Ripple and Beschta 2004, Ray et al. 2005). Nevertheless, most carnivores are neither large nor at the apex of their ecologic ...
High trophic overlap within the seabird community of Argentinean
... the Argentinean Patagonia (Fig. 1), which covers about 1000 km of coast and numerous islands. This area is an example of a wide, fully open shelf that is highly affected by two major western boundary currents, Falklands’ and Patagonian (Fig. 1). The Patagonian continental shelf is characterized by w ...
... the Argentinean Patagonia (Fig. 1), which covers about 1000 km of coast and numerous islands. This area is an example of a wide, fully open shelf that is highly affected by two major western boundary currents, Falklands’ and Patagonian (Fig. 1). The Patagonian continental shelf is characterized by w ...
- New Zealand Ecological Society
... this deployment might evolve as a network of smaller core areas aiming to achieve zero or low densities of all or most pests, with surrounding halos with lesser control effort against fewer species, enough to allow for at least ‘safe passage’ of native animals between the cores. This system might wo ...
... this deployment might evolve as a network of smaller core areas aiming to achieve zero or low densities of all or most pests, with surrounding halos with lesser control effort against fewer species, enough to allow for at least ‘safe passage’ of native animals between the cores. This system might wo ...
Albatross - Pacific Rim Conservation
... War II also took a heavy toll. During the 1950s and 1960s, thousands of albatrosses were killed at Midway to reduce risk of collisions with aircraft. Today, human disturbance is a threat primarily on Oahu and Kauai. At the U. S. Navy Pacific Missile Range Facility on Kauai, Laysan Albatrosses are a ...
... War II also took a heavy toll. During the 1950s and 1960s, thousands of albatrosses were killed at Midway to reduce risk of collisions with aircraft. Today, human disturbance is a threat primarily on Oahu and Kauai. At the U. S. Navy Pacific Missile Range Facility on Kauai, Laysan Albatrosses are a ...
Island-specific Ecological Release of Small Mammals in Lake
... Many authors have questioned the use of artificial nests to estimate rates of nest depredation of natural bird nests. Factors such as human scent contamination (Donalty and Henke 2001); lack of adult scent and incubating activity; presence of eggs but not nestlings; differences in camouflage; lack o ...
... Many authors have questioned the use of artificial nests to estimate rates of nest depredation of natural bird nests. Factors such as human scent contamination (Donalty and Henke 2001); lack of adult scent and incubating activity; presence of eggs but not nestlings; differences in camouflage; lack o ...
PSG 2012 Hawaii abstracts
... Satellite telemetry studies of the movements of seabirds are now common and have revealed impressive flight capabilities and extensive distributions among individuals of many species at sea. Linking seabird movements with environmental conditions over vast expanses of the world’s open ocean, however ...
... Satellite telemetry studies of the movements of seabirds are now common and have revealed impressive flight capabilities and extensive distributions among individuals of many species at sea. Linking seabird movements with environmental conditions over vast expanses of the world’s open ocean, however ...
Flightless ducks, giant mice and pygmy mammoths
... on the islands between 13,000 and 12,900 cal. BP (Erlandson et al. 2011; Johnson et al. 2002). This apparent overlap led Agenbroad et al. (2005) to speculate that humans may have been responsible for the extinction of Channel Island mammoths. No clear resolution currently exists on the cause or caus ...
... on the islands between 13,000 and 12,900 cal. BP (Erlandson et al. 2011; Johnson et al. 2002). This apparent overlap led Agenbroad et al. (2005) to speculate that humans may have been responsible for the extinction of Channel Island mammoths. No clear resolution currently exists on the cause or caus ...
Experimental Zoogeography of Islands
... foraging by adults. Females of the moth A u t o wzeris i o (Saturniidae) fly frequently onto small mangrove islands and occasionally deposit eggs. The life cycle from egg to adult of Autovneris on Rhizophora is about 2% months, and if (as may have happened on E3) adults breed on an island at interva ...
... foraging by adults. Females of the moth A u t o wzeris i o (Saturniidae) fly frequently onto small mangrove islands and occasionally deposit eggs. The life cycle from egg to adult of Autovneris on Rhizophora is about 2% months, and if (as may have happened on E3) adults breed on an island at interva ...
NatioNal actioN PlaN for the coNservatioN of albatrosses
... the Tristão da Cunha Islands. Other large albatross’ species are also caught by Brazilian fishing vessels, mainly the wandering albatross, Diomedea exulans, the Tristan albatross, D. dabbenena, the southern royal albatross, D. epomophora and northern royal albatross, D. sanfordi. The wandering alb ...
... the Tristão da Cunha Islands. Other large albatross’ species are also caught by Brazilian fishing vessels, mainly the wandering albatross, Diomedea exulans, the Tristan albatross, D. dabbenena, the southern royal albatross, D. epomophora and northern royal albatross, D. sanfordi. The wandering alb ...
BREEDING SPECIES OF WATERBIRDS ON 10 ISLANDS OF
... region. High salinity is one of the most important environmental factors controlling and limiting the occurrence and distribution of marine life in the Persian Gulf. Thirdly, the Persian Gulf is connected with the Indian Ocean only by a narrow passage at the strait of Hormuz, and has a so-called Med ...
... region. High salinity is one of the most important environmental factors controlling and limiting the occurrence and distribution of marine life in the Persian Gulf. Thirdly, the Persian Gulf is connected with the Indian Ocean only by a narrow passage at the strait of Hormuz, and has a so-called Med ...
Eradication of invasive alien vertebrates in the UK Overseas
... The UK Overseas Territories (OTs) are of considerable importance for biodiversity, holding an estimated 90% of the UKs total biodiversity and over 300 globally threatened species (IUCN 2013). One of the most serious threats identified to this biodiversity is the presence of invasive alien species, i ...
... The UK Overseas Territories (OTs) are of considerable importance for biodiversity, holding an estimated 90% of the UKs total biodiversity and over 300 globally threatened species (IUCN 2013). One of the most serious threats identified to this biodiversity is the presence of invasive alien species, i ...
Nest predation in New Zealand songbirds: Exotic predators
... Massaro et al., 2008). However, there are reasons to treat kiore separately from newly introduced mammalian predators. First, it was introduced to New Zealand by Maori starting ca. 1000 years ago (Atkinson, 2001), allowing for microevolutionary response in its prey (Stockwell et al., 2003). Second, ...
... Massaro et al., 2008). However, there are reasons to treat kiore separately from newly introduced mammalian predators. First, it was introduced to New Zealand by Maori starting ca. 1000 years ago (Atkinson, 2001), allowing for microevolutionary response in its prey (Stockwell et al., 2003). Second, ...
Cats - An Annotated Bibliography
... Wyperfield National Park had a significant effect on any mammal population. It was difficult to draw conclusions about birds although birds remain at all times a minor part of diet. Rabbits were the major food source. The study identifies species by number but does not identify whether they were nat ...
... Wyperfield National Park had a significant effect on any mammal population. It was difficult to draw conclusions about birds although birds remain at all times a minor part of diet. Rabbits were the major food source. The study identifies species by number but does not identify whether they were nat ...
Guidelines for Managing Visitation to Seabird Breeding
... In any environmental management exercise, it is essential to monitor the effectiveness of management approaches and specific measures. These guidelines are no exception and they will benefit from further testing and from research and monitoring activities designed to provide clearer guidance on spec ...
... In any environmental management exercise, it is essential to monitor the effectiveness of management approaches and specific measures. These guidelines are no exception and they will benefit from further testing and from research and monitoring activities designed to provide clearer guidance on spec ...
Tabby Go Home
... condition, numbers and activity patterns of their household cats, as well as how often their cats brought back prey items to the residence. Second, willing owners were asked to collect all the returned prey so I could identify which species, both native and exotic, cats were killing. Third, batted t ...
... condition, numbers and activity patterns of their household cats, as well as how often their cats brought back prey items to the residence. Second, willing owners were asked to collect all the returned prey so I could identify which species, both native and exotic, cats were killing. Third, batted t ...
Presence of mammalian predators decreases tolerance to human
... the Falkland Islands (Malvinas) and South America, using variation generated by the ‘‘natural experiment’’ of mammalian predator introduction to the Falkland Islands. Following recent studies, we used spatial variation in predator distribution to investigate the behavioral impacts of predation risk ...
... the Falkland Islands (Malvinas) and South America, using variation generated by the ‘‘natural experiment’’ of mammalian predator introduction to the Falkland Islands. Following recent studies, we used spatial variation in predator distribution to investigate the behavioral impacts of predation risk ...
Using stable isotopes of nitrogen and carbon to study - ICM-CSIC
... SUMMARY: The application of the stable isotope technique to ecological studies is becoming increasingly widespread. In the case of seabirds, stable isotopes of nitrogen and carbon have been mainly used as dietary tracers. This approach relies on the fact that foodweb isotopic signatures are reflecte ...
... SUMMARY: The application of the stable isotope technique to ecological studies is becoming increasingly widespread. In the case of seabirds, stable isotopes of nitrogen and carbon have been mainly used as dietary tracers. This approach relies on the fact that foodweb isotopic signatures are reflecte ...
Eradication of feral cats from large islands
... San Nicolas Island in the Channel Islands, California (33°14′ N, 119°31′ W), is arid (annual rainfall less than 200 mm) with sparse vegetation. Feral dogs (Canis familiaris) were removed in 1857 and farmed sheep were removed in the 1940s. Cats may have been present since these times but were reporte ...
... San Nicolas Island in the Channel Islands, California (33°14′ N, 119°31′ W), is arid (annual rainfall less than 200 mm) with sparse vegetation. Feral dogs (Canis familiaris) were removed in 1857 and farmed sheep were removed in the 1940s. Cats may have been present since these times but were reporte ...
Experimental evidence that feral cats cause local extirpation of small
... impact of free-ranging cats is likely to be much higher than previously thought, with more than 20 billion mammals killed by cats each year in the United States alone. Translated to Australia, this implies a potentially significant impact of cats on currently widespread smallmammal species. Since th ...
... impact of free-ranging cats is likely to be much higher than previously thought, with more than 20 billion mammals killed by cats each year in the United States alone. Translated to Australia, this implies a potentially significant impact of cats on currently widespread smallmammal species. Since th ...
Viewing invasive species removal in a whole
... many types. Excessive poisoning of non-target organisms and transfer of poisons up food chains6 are problems that can result from the removal method used7,8. Some eradication efforts fail because they do not eliminate the target organism, because they either miss individuals or do not include steps ...
... many types. Excessive poisoning of non-target organisms and transfer of poisons up food chains6 are problems that can result from the removal method used7,8. Some eradication efforts fail because they do not eliminate the target organism, because they either miss individuals or do not include steps ...
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.