Brittle Stars - Research Online at MacEwan
... their range could pose a threat to existing coral reefs in areas previously uninhabited by brittle stars (Hendler et al. 2012). For example, O. mirabilis has expanded from the Pacific Ocean into the Atlantic, most likely by attaching to ships and have become an invasive species (Hendler et al. 2012) ...
... their range could pose a threat to existing coral reefs in areas previously uninhabited by brittle stars (Hendler et al. 2012). For example, O. mirabilis has expanded from the Pacific Ocean into the Atlantic, most likely by attaching to ships and have become an invasive species (Hendler et al. 2012) ...
Wildlife Review Packet
... Most large mammals require ________ water and will typically drink ________ times per day. ...
... Most large mammals require ________ water and will typically drink ________ times per day. ...
Download population ecology of introduced rodents (Rattus rattus, Rattus exulans, and Mus musculus) and their habitat uses in Hawaiian mesic forest
... Wildlife Refuge) on Hawaii Island. There, the average home-ranges were estimated at 3.5 ha and 3.0 ha for black rats and Pacific rats, respectively (Lindsey et al. 1999). Determining the extent of variation (i.e., patchiness) in rodent species composition, abundance, and habitat use within a given f ...
... Wildlife Refuge) on Hawaii Island. There, the average home-ranges were estimated at 3.5 ha and 3.0 ha for black rats and Pacific rats, respectively (Lindsey et al. 1999). Determining the extent of variation (i.e., patchiness) in rodent species composition, abundance, and habitat use within a given f ...
A review of the indicators for ecosystem structure and functioning
... frameworks are “threatened and declining species” or “sensitive and opportunistic species”. These groupings may apply to benthos, fish, seabirds, marine mammals or marine reptiles (eg turtles) and would conceptually fall under the population level. However, they may be used as sentinels at the commu ...
... frameworks are “threatened and declining species” or “sensitive and opportunistic species”. These groupings may apply to benthos, fish, seabirds, marine mammals or marine reptiles (eg turtles) and would conceptually fall under the population level. However, they may be used as sentinels at the commu ...
Stability and complexity : a reappraisal of the Competitive Exclusion
... (1970) ran simulations and found that stability decreased with increasingly complex systems. Soon after, May (1972) argued that mathematical stability required simplicity in ecological systems, an argument pursued to an extreme by Pimm (1984). It was realized by the ecological community that the Rou ...
... (1970) ran simulations and found that stability decreased with increasingly complex systems. Soon after, May (1972) argued that mathematical stability required simplicity in ecological systems, an argument pursued to an extreme by Pimm (1984). It was realized by the ecological community that the Rou ...
Patterns and Consequences of Interspecific Competition
... at least one group of neighbors. We also included two other types of experiments in which treatments differ in neighbor identity but not absolute neighbor abundance. These allow comparison of the relative but not the absolute magnitude of the effects of different neighbors. In "comparison-phytometer ...
... at least one group of neighbors. We also included two other types of experiments in which treatments differ in neighbor identity but not absolute neighbor abundance. These allow comparison of the relative but not the absolute magnitude of the effects of different neighbors. In "comparison-phytometer ...
Refining mimicry: phenotypic variation tracks the local
... ullerian mimicry between chemically defended preys is a textbook example of natural selection favouring phenotypic convergence onto a shared warning signal. Studies of mimicry have concentrated on deciphering the ecological and genetic underpinnings of dramatic switches in mimicry association, produ ...
... ullerian mimicry between chemically defended preys is a textbook example of natural selection favouring phenotypic convergence onto a shared warning signal. Studies of mimicry have concentrated on deciphering the ecological and genetic underpinnings of dramatic switches in mimicry association, produ ...
Arid Recovery Annual Report 2008
... period and will continue until all southern sections of the Reserve are replaced. Effective monitoring for feral and native animals inside the Reserve and weekly perimeter fence checks successfully detected these feral animals and enabled staff, students and volunteers to act quickly. Two of the thr ...
... period and will continue until all southern sections of the Reserve are replaced. Effective monitoring for feral and native animals inside the Reserve and weekly perimeter fence checks successfully detected these feral animals and enabled staff, students and volunteers to act quickly. Two of the thr ...
Chipmunk, Peñasco least
... This petition requests that the U.S. Fish and Wildlife Service (FWS) list the Peñasco least chipmunk as “endangered” or “threatened” throughout its entire range under the U.S. Endangered Species Act (ESA). The chipmunk has a narrow range and small population size—it is known from only two population ...
... This petition requests that the U.S. Fish and Wildlife Service (FWS) list the Peñasco least chipmunk as “endangered” or “threatened” throughout its entire range under the U.S. Endangered Species Act (ESA). The chipmunk has a narrow range and small population size—it is known from only two population ...
The role of metapopulations in conservation
... long-term persistence of small populations substantially. However, a metapopulation study (Regan & Auld 2004) concluded that management of fires is crucial for the long-term persistence of G. caleyi populations, and that predation management was rather ineffective by itself. The reason for this diff ...
... long-term persistence of small populations substantially. However, a metapopulation study (Regan & Auld 2004) concluded that management of fires is crucial for the long-term persistence of G. caleyi populations, and that predation management was rather ineffective by itself. The reason for this diff ...
The Ecology of Mutualism
... Plants benefit most when soil nutrient concentrations are low. In some circumstances, normally mutualistic fungi can be parasitic, and in rare instances of high phosphate levels the increased uptake caused by mycorrhizae can cause phosphate poisoning (42). Nutrient uptake by endozoic algae has been ...
... Plants benefit most when soil nutrient concentrations are low. In some circumstances, normally mutualistic fungi can be parasitic, and in rare instances of high phosphate levels the increased uptake caused by mycorrhizae can cause phosphate poisoning (42). Nutrient uptake by endozoic algae has been ...
solomon islands
... Solomon Islands Biodiversity: The Solomon Islands is a southwest tropical Pacific nation lying just south of the equator. Comprised of over 992 islands it includes seven of the eight major island groups of the Solomon Archipelago. The terrestrial flora and fauna of all of the larger islands in the S ...
... Solomon Islands Biodiversity: The Solomon Islands is a southwest tropical Pacific nation lying just south of the equator. Comprised of over 992 islands it includes seven of the eight major island groups of the Solomon Archipelago. The terrestrial flora and fauna of all of the larger islands in the S ...
Coral reefs in crisis: The reliability of deep-time food web
... time-averaged on at least a millennial scale [55]. The complete dataset documents the interactions of 749 species in the northern Caribbean, ranging from single-celled protists to multicellular macrophytes and metazoans, of which 728 have records of occurrence in Jamaica. Multiple species were colla ...
... time-averaged on at least a millennial scale [55]. The complete dataset documents the interactions of 749 species in the northern Caribbean, ranging from single-celled protists to multicellular macrophytes and metazoans, of which 728 have records of occurrence in Jamaica. Multiple species were colla ...
The role of past and present management in the rural landscape
... was used as a basis for a permutation test comparing seed bank, seed rain and above-ground vegetation communities at the site level, as well as for assessing the similarity of the seed bank and seed rain with above-ground vegetation between habitat types. Characteristic species of seminatural grassl ...
... was used as a basis for a permutation test comparing seed bank, seed rain and above-ground vegetation communities at the site level, as well as for assessing the similarity of the seed bank and seed rain with above-ground vegetation between habitat types. Characteristic species of seminatural grassl ...
DOC. SC37-29 - The Ramsar Convention on Wetlands
... Urge that particular priority be given to capacity building for flyway conservation in countries and territories with limited institutions and resources, given that the wise use of waterbirds and wetlands is important for sustainable development and poverty alleviation; Strongly encourage countries ...
... Urge that particular priority be given to capacity building for flyway conservation in countries and territories with limited institutions and resources, given that the wise use of waterbirds and wetlands is important for sustainable development and poverty alleviation; Strongly encourage countries ...
PROCEEDINGS STREAKED HORNED LARK WORKSHOP 2007
... and adult survival are important factors driving population growth. Further, annual fecundity is lower in Washington than in B.C. and may be due to smaller clutch size, reduced hatching success, lower nest survival, and longer re-nesting intervals. Streaked Horned Lark reproductive success in Washin ...
... and adult survival are important factors driving population growth. Further, annual fecundity is lower in Washington than in B.C. and may be due to smaller clutch size, reduced hatching success, lower nest survival, and longer re-nesting intervals. Streaked Horned Lark reproductive success in Washin ...
Why bother about taxonomy and taxonomists in Europe
... focused in the universities and academy of sciences which are mainly state institutions with very low budget. The same refers to the major biological collections. They all rely on the restricted state budgets. This often results in relatively very low salaries for researchers, even to local standard ...
... focused in the universities and academy of sciences which are mainly state institutions with very low budget. The same refers to the major biological collections. They all rely on the restricted state budgets. This often results in relatively very low salaries for researchers, even to local standard ...
attached - BobWongLab
... We controlled for the stimulus phenotype and behaviour by using model intruders that were all the same size (16 cm in length). Hand-made models have been successfully used as stimuli to elicit ecologically relevant behaviours in a range of fish species (reviewed in [41]), including field-based studi ...
... We controlled for the stimulus phenotype and behaviour by using model intruders that were all the same size (16 cm in length). Hand-made models have been successfully used as stimuli to elicit ecologically relevant behaviours in a range of fish species (reviewed in [41]), including field-based studi ...
Biogeography and endemism of ants in Baja California
... and inhospitable conditions confined most biological explorations to a few selected regions. Nevertheless, it is apparent that Baja California supports a diverse and distinctive flora and fauna. The biota is also notable because of the substantial numbers of endemic species (Wiggins, 1980; Case & Co ...
... and inhospitable conditions confined most biological explorations to a few selected regions. Nevertheless, it is apparent that Baja California supports a diverse and distinctive flora and fauna. The biota is also notable because of the substantial numbers of endemic species (Wiggins, 1980; Case & Co ...
Evolution and adaptations of Galapagos sea-birds
... marine environments would be found to be more uniform for sea-birds than terrestrial environments are for land-birds. The surface of the sea is much the same the world over, the food available for sea-birds near the surface is much the same in different oceans at equivalent latitudes, and cliffs and ...
... marine environments would be found to be more uniform for sea-birds than terrestrial environments are for land-birds. The surface of the sea is much the same the world over, the food available for sea-birds near the surface is much the same in different oceans at equivalent latitudes, and cliffs and ...
Potential consequences of the coqui frog invasion in Hawaii
... (Table 1). Thus, it appears that coquis are mostly consuming non-native, leaf litter invertebrates. It is not surprising that exotics constitute the majority of the coqui diet because coqui populations have mostly become established in nurseries, residential gardens, resort areas, state parks and lo ...
... (Table 1). Thus, it appears that coquis are mostly consuming non-native, leaf litter invertebrates. It is not surprising that exotics constitute the majority of the coqui diet because coqui populations have mostly become established in nurseries, residential gardens, resort areas, state parks and lo ...
Society for the Study of Amphibians and Reptiles
... predators typical of the breeding habitats of the parental species. Hybrid tadpoles had lower survival with sunfish than odonate naiad (dragonfly) predators and tended to increase hiding behavior in response to sunfish predation. Tadpoles of H. gratiosa also had higher survival with odonates than su ...
... predators typical of the breeding habitats of the parental species. Hybrid tadpoles had lower survival with sunfish than odonate naiad (dragonfly) predators and tended to increase hiding behavior in response to sunfish predation. Tadpoles of H. gratiosa also had higher survival with odonates than su ...
Biotic resistance and facilitation of a non
... disperse widely (Quayle 1964). Adults are found primarily in wave-protected habitats and can dominate intertidal areas as a consequence of high numbers and large size (up to 30 cm). However, in most locations along the coast, oysters are rare, suggesting some mechanisms of resistance to invasion or ...
... disperse widely (Quayle 1964). Adults are found primarily in wave-protected habitats and can dominate intertidal areas as a consequence of high numbers and large size (up to 30 cm). However, in most locations along the coast, oysters are rare, suggesting some mechanisms of resistance to invasion or ...
Plant species loss decreases arthropod diversity and shifts trophic structure
... predator species richness. Both herbivore and predator species richness were positively related to plant biomass (Tables S1 and S5). While annual arthropod responses were relatively weak, we found strong responses of cumulative richness of both herbivores and predators to plant species richness (Fig ...
... predator species richness. Both herbivore and predator species richness were positively related to plant biomass (Tables S1 and S5). While annual arthropod responses were relatively weak, we found strong responses of cumulative richness of both herbivores and predators to plant species richness (Fig ...
Feeding electivity of Pugettia gracilis, the graceful kelp crab
... neither a monthly complete harvest of sea urchins (simulating sea otter predation), nor an annual size-selective harvest of sea urchins (simulating commercial urchin harvest), significantly increased the density of perennial or annual (incl. N. luetkeana) species of macroalgae after 2 years. These ...
... neither a monthly complete harvest of sea urchins (simulating sea otter predation), nor an annual size-selective harvest of sea urchins (simulating commercial urchin harvest), significantly increased the density of perennial or annual (incl. N. luetkeana) species of macroalgae after 2 years. These ...
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.