IUCN Species Survival Commission
... effective lifespan. They are not an advocacy document for conservation translocations; indeed they are designed to ensure that proposals for any such activity are rigorously designed and scrutinised, whatever the taxon or scale of operation. Accordingly, the need for risk assessment and sound decisi ...
... effective lifespan. They are not an advocacy document for conservation translocations; indeed they are designed to ensure that proposals for any such activity are rigorously designed and scrutinised, whatever the taxon or scale of operation. Accordingly, the need for risk assessment and sound decisi ...
An Experimental Test of Darwin`s Naturalization Hypothesis
... relatedness and invasion. Second and more important, although not explicitly stated, Darwin’s naturalization hypothesis best applies to small spatial scales at which species interact with each other, given the assumption of strong competition between closely related species as its driving mechanism. ...
... relatedness and invasion. Second and more important, although not explicitly stated, Darwin’s naturalization hypothesis best applies to small spatial scales at which species interact with each other, given the assumption of strong competition between closely related species as its driving mechanism. ...
Fairy Tern information
... For small terns like the Fairy Tern foraging in the open ocean is likely to have some risks. Storm events are likely to make it very difficult for small terns to be able to forage, let alone forage efficiently. A possible reason for the breeding colony at Goat Island failing to fledge any chicks in ...
... For small terns like the Fairy Tern foraging in the open ocean is likely to have some risks. Storm events are likely to make it very difficult for small terns to be able to forage, let alone forage efficiently. A possible reason for the breeding colony at Goat Island failing to fledge any chicks in ...
Progress in wetland restoration ecology
... match some reference site or a specific impact site, the need to emphasize one or a few attributes that can be measured to assess compliance with permit conditions, and the need to achieve specific standards in a short time frame, usually five years3. To determine if standards are met, permits gener ...
... match some reference site or a specific impact site, the need to emphasize one or a few attributes that can be measured to assess compliance with permit conditions, and the need to achieve specific standards in a short time frame, usually five years3. To determine if standards are met, permits gener ...
ABSTRACT. This study investigates how arboreal spider
... years, a major change in vegetation cover has occurred in salt marshes of the Mont SaintMichel bay (France). In this study, we investigated if the high conservation value of invaded salt marshes is preserved. Abundances, densities and flood resistance abilities of the dominant halophilic species Arc ...
... years, a major change in vegetation cover has occurred in salt marshes of the Mont SaintMichel bay (France). In this study, we investigated if the high conservation value of invaded salt marshes is preserved. Abundances, densities and flood resistance abilities of the dominant halophilic species Arc ...
Chapter 1 - Edinburgh Research Archive
... individuals or species with the same or similar requirements for resources and least between associated plants with differing demands. They are often most consequential during the stages of ecesis (section 1.4 paragraph 2) when closely dispersed seeds from one species develop into numerous seedlings ...
... individuals or species with the same or similar requirements for resources and least between associated plants with differing demands. They are often most consequential during the stages of ecesis (section 1.4 paragraph 2) when closely dispersed seeds from one species develop into numerous seedlings ...
Overview of the Spanish fisheries in the Patagonian Shelf. ICES CM
... information was used for preliminary assessment of two hake populations. Monthly lengthfrequencies of hake were used for cohort analysis, using standard software. Assessment based on cohort analysis was carried out for the stocks in international waters. The suitability of a range of other possible ...
... information was used for preliminary assessment of two hake populations. Monthly lengthfrequencies of hake were used for cohort analysis, using standard software. Assessment based on cohort analysis was carried out for the stocks in international waters. The suitability of a range of other possible ...
American Bison - Minnesota Zoo
... Ehmke: “American bison were the first wildlife species that zoos actively worked to help save, with a small herd originating from the Bronx Zoo being returned to the wild in 1907 to help restore the species in the Western Plains. A strategic priority of the Minnesota Zoo is to increase awareness and ...
... Ehmke: “American bison were the first wildlife species that zoos actively worked to help save, with a small herd originating from the Bronx Zoo being returned to the wild in 1907 to help restore the species in the Western Plains. A strategic priority of the Minnesota Zoo is to increase awareness and ...
Copenhaver 1 Lake and Bog Fish Survey and Water
... construction affecting water access. In addition, few sites were not surveyed with a few techniques due to the assumptions of certain species would not be present in certain harsh environments to save time and effort. The seine nets used were ca.1.2 m wide x 5m and 25 m long. Two gill net type ...
... construction affecting water access. In addition, few sites were not surveyed with a few techniques due to the assumptions of certain species would not be present in certain harsh environments to save time and effort. The seine nets used were ca.1.2 m wide x 5m and 25 m long. Two gill net type ...
Assessing the Effects of Climate Change on Aquatic Invasive Species
... terways have been recorded throughout North America (Fuller et al. 1999). For example, piranha (Pygocentrus or Serrasalmus) have been recorded in 22 states, and although no populations have become established, areas where overwinter survival is possible may increase with climate warming (Fig. 4). To ...
... terways have been recorded throughout North America (Fuller et al. 1999). For example, piranha (Pygocentrus or Serrasalmus) have been recorded in 22 states, and although no populations have become established, areas where overwinter survival is possible may increase with climate warming (Fig. 4). To ...
Beak of the Fish: What Cichlid Flocks Reveal About Speciation
... protein domain areas affected by these numerous amino acid substitutions in the Bmp4 found that all substitutions affected the portion of the protein responsible for post-translational control of ...
... protein domain areas affected by these numerous amino acid substitutions in the Bmp4 found that all substitutions affected the portion of the protein responsible for post-translational control of ...
here - Western Australian Museum
... As Engaewa spend virtually their entire life below ground, one immediate challenge is to confirm their presence at a site. In order to direct collection efforts, in the first instance potential habitat was identified using a combination of maps and satellite imagery, looking for small creeks or pote ...
... As Engaewa spend virtually their entire life below ground, one immediate challenge is to confirm their presence at a site. In order to direct collection efforts, in the first instance potential habitat was identified using a combination of maps and satellite imagery, looking for small creeks or pote ...
Layman report - European Commission
... colonies after the assessment of 144 colony islands and of different potential population control methods. The aim was to determine their applicability in Greece and to improve the breeding success of the project’s two target species. Among different control methods available, such as disturbance at ...
... colonies after the assessment of 144 colony islands and of different potential population control methods. The aim was to determine their applicability in Greece and to improve the breeding success of the project’s two target species. Among different control methods available, such as disturbance at ...
(Coleoptera: Tenebrionidae) in the shortgrass steppe
... ABSTRACT.—Patterns in the community structure of darkling beetle (9 Eleodes spp., Coleoptera: Tenebrionidae) assemblages in the shortgrass steppe of north central Colorado were monitored by live pitfall trapping for 4 summers. There were significant correlations among weather (temperature and precip ...
... ABSTRACT.—Patterns in the community structure of darkling beetle (9 Eleodes spp., Coleoptera: Tenebrionidae) assemblages in the shortgrass steppe of north central Colorado were monitored by live pitfall trapping for 4 summers. There were significant correlations among weather (temperature and precip ...
ThemeGallery PowerTemplate
... Case Study: Competition in Plants that Eat Animals Pitcher plants lure insects into a pitchershaped trap. The inside of the pitcher has downwardfacing hairs, which make it easy for the insect to crawl in, but hard to crawl out. About halfway down, many pitchers have a layer of wax that sticks ...
... Case Study: Competition in Plants that Eat Animals Pitcher plants lure insects into a pitchershaped trap. The inside of the pitcher has downwardfacing hairs, which make it easy for the insect to crawl in, but hard to crawl out. About halfway down, many pitchers have a layer of wax that sticks ...
Maritime cliffs and slopes
... generally slower or non-existent and on cliff tops and faces, areas are frequently stripped bare due to wind action. Rabbits are also often present in large numbers, maintaining open areas and further preventing scrub invasion. However, privet, gorse and blackthorn can encroach on such habitats. Alt ...
... generally slower or non-existent and on cliff tops and faces, areas are frequently stripped bare due to wind action. Rabbits are also often present in large numbers, maintaining open areas and further preventing scrub invasion. However, privet, gorse and blackthorn can encroach on such habitats. Alt ...
Novel weapons: invasive success and the evolution of increased
... and dominant in its natural geographic range as it is in the western North American communities it has invaded (RM Callaway pers obs). While working in the foothills of the Caucasus Mountains, Callaway and Aschehoug (2000) observed that many of the genera outcompeted by C diffusa in North America ap ...
... and dominant in its natural geographic range as it is in the western North American communities it has invaded (RM Callaway pers obs). While working in the foothills of the Caucasus Mountains, Callaway and Aschehoug (2000) observed that many of the genera outcompeted by C diffusa in North America ap ...
Chapter 2 Morphometric measurement selection: an invertebrate case study
... Marion Island, they are restricted to habitats that are characterised by angiosperm vegetation (Chown 1989a), where mice are particularly abundant (Gleeson and van Rensburg 1982). Because these species are also present on the nearby mouse-free Prince Edward Island (22 km distant) (Crafford and Schol ...
... Marion Island, they are restricted to habitats that are characterised by angiosperm vegetation (Chown 1989a), where mice are particularly abundant (Gleeson and van Rensburg 1982). Because these species are also present on the nearby mouse-free Prince Edward Island (22 km distant) (Crafford and Schol ...
Appendix A
... „To date several biological control agents have been successful yet not well spread.(perhaps when making the application a clear pathway be identified on how distribution will take place accompanied with the required funding).‟ the question would have to be asked, "What happens when all of the tobac ...
... „To date several biological control agents have been successful yet not well spread.(perhaps when making the application a clear pathway be identified on how distribution will take place accompanied with the required funding).‟ the question would have to be asked, "What happens when all of the tobac ...
On the Use of Surrogate Species in Conservation Biology
... public attention and funding for a larger environmental issue (Dietz et al. 1994). In contrast, a keystone species is an ecological concept that is used to describe a species whose impact on the community or ecosystem is disproportionately large relative to its abundance (Mills et al 1993; Power et ...
... public attention and funding for a larger environmental issue (Dietz et al. 1994). In contrast, a keystone species is an ecological concept that is used to describe a species whose impact on the community or ecosystem is disproportionately large relative to its abundance (Mills et al 1993; Power et ...
Dendrolagus scottae n.sp. (Marsupialia: Macropodidae): a new tree
... mountain ranges lie to the west of the Torricelli Mountains, and may provide habitat for D. scottae n.sp. An unnamed range 31 km to the west, and separated by saddles as low as 640 m, has some 40 km2 above 1,200 m. Again, however, it is divided into many fragments, the largest being only 27 km2 • Th ...
... mountain ranges lie to the west of the Torricelli Mountains, and may provide habitat for D. scottae n.sp. An unnamed range 31 km to the west, and separated by saddles as low as 640 m, has some 40 km2 above 1,200 m. Again, however, it is divided into many fragments, the largest being only 27 km2 • Th ...
Diversity Increases Indirect Interactions
... (Lankau et al. 2011), and there is empirical evidence for nontransitive interactions among multiple genotypes of a species and its competitors in invaded plant systems (Lankau and Strauss 2007). But clearly identifying nontransitive interactions among multiple species of plants in communities has pr ...
... (Lankau et al. 2011), and there is empirical evidence for nontransitive interactions among multiple genotypes of a species and its competitors in invaded plant systems (Lankau and Strauss 2007). But clearly identifying nontransitive interactions among multiple species of plants in communities has pr ...
1369-1376
... sites and less well at confamilial and distant relative sites. This pattern is reversed later, as in terms of survival most species performed better when grown with distant than with close relatives. The authors suggest that more closely related species are more similar ecologically and that is the ...
... sites and less well at confamilial and distant relative sites. This pattern is reversed later, as in terms of survival most species performed better when grown with distant than with close relatives. The authors suggest that more closely related species are more similar ecologically and that is the ...
Do cities export biodiversity? Traffic as dispersal vector
... We used two long (750 and 1050 m) motorway tunnels in Berlin, Germany, as sampling sites to insulate seed samples from other dispersal vectors than traffic. The tunnels are located on the same motorway leading from the inner city to the north-west outskirts of Berlin at a distance of 2 km from each ...
... We used two long (750 and 1050 m) motorway tunnels in Berlin, Germany, as sampling sites to insulate seed samples from other dispersal vectors than traffic. The tunnels are located on the same motorway leading from the inner city to the north-west outskirts of Berlin at a distance of 2 km from each ...
Rusty Crayfish Invades Ontario Waters
... length of 10 cm (3.9 inches), not including the claws . Its claws are more robust and larger than other native species in Ontario. Rusty crayfish can live three to four years. The number of eggs a female lays ranges from 50 to 575 eggs, which hatch in three to six weeks depending on water temperatur ...
... length of 10 cm (3.9 inches), not including the claws . Its claws are more robust and larger than other native species in Ontario. Rusty crayfish can live three to four years. The number of eggs a female lays ranges from 50 to 575 eggs, which hatch in three to six weeks depending on water temperatur ...
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.