3.1 Measuring Biodiversity
... only 1 percent of Canada’s total landmass, it has a higher number of species than any other ecosystem in Canada. It is estimated to have 2200 plants, including endangered trees and orchids, as well as 40 percent of Canada’s breeding birds. The Leitrim Wetlands, near Ottawa, is home to more than 200 ...
... only 1 percent of Canada’s total landmass, it has a higher number of species than any other ecosystem in Canada. It is estimated to have 2200 plants, including endangered trees and orchids, as well as 40 percent of Canada’s breeding birds. The Leitrim Wetlands, near Ottawa, is home to more than 200 ...
Colony–colony interactions between highly invasive ants
... among four highly invasive species, Linepithema humile, Lasius neglectus, Pheidole megacephala and Wasmannia auropunctata, at the whole colony level, using a laboratory set-up. Each colony consisted of 300 workers and one queen. The number of surviving workers in the competing colonies was recorded ...
... among four highly invasive species, Linepithema humile, Lasius neglectus, Pheidole megacephala and Wasmannia auropunctata, at the whole colony level, using a laboratory set-up. Each colony consisted of 300 workers and one queen. The number of surviving workers in the competing colonies was recorded ...
Landscape Ecology and Ecosystems Management
... seeds, etc. between communities. These changes ultimately affect ecological processes such as gene flow and species composition in each community. For example, breaking up the forest or creating openings in the forest matrix creates smaller forest patches, with the matrix becoming open land (Figure ...
... seeds, etc. between communities. These changes ultimately affect ecological processes such as gene flow and species composition in each community. For example, breaking up the forest or creating openings in the forest matrix creates smaller forest patches, with the matrix becoming open land (Figure ...
Alien Species
... • Impacts to native species – Threats to 49% of all endangered and threatened species – Blamed for 68% of fish extinctions in U.S. Changing Hudson Project Institute of Ecosystem Studies ...
... • Impacts to native species – Threats to 49% of all endangered and threatened species – Blamed for 68% of fish extinctions in U.S. Changing Hudson Project Institute of Ecosystem Studies ...
Population Density and Energetics of Lizards - UCI
... east of, and of similar composition to, our study quadrat. Each gecko seen was collected, weighed, and measured. The assessment of the population density of Cnemidophorus posed several problems. Freeranging teiids are very wary, difficult to capture, and will run at high speeds if pursued. Animals c ...
... east of, and of similar composition to, our study quadrat. Each gecko seen was collected, weighed, and measured. The assessment of the population density of Cnemidophorus posed several problems. Freeranging teiids are very wary, difficult to capture, and will run at high speeds if pursued. Animals c ...
Conserving Biodiversity by Conserving Land
... include such things as setting aside habitat as biological reserves, alternative pesticide application or tillage practices on agricultural land, or alternative timber harvest rotations in forests. Management actions could also include consideration of public policies such as zoning laws that restri ...
... include such things as setting aside habitat as biological reserves, alternative pesticide application or tillage practices on agricultural land, or alternative timber harvest rotations in forests. Management actions could also include consideration of public policies such as zoning laws that restri ...
English - Invasive Species Specialist Group
... Urgent attention to the IAS problem is needed • The risks of transferring IAS to new locations increases as more people are travelling and amount of freight is increasing. ...
... Urgent attention to the IAS problem is needed • The risks of transferring IAS to new locations increases as more people are travelling and amount of freight is increasing. ...
More Biodiversity on Organic Farms? - Epsilon Open Archive
... The natural enemies of pest species are usually most affected by the surrounding landscape. There ...
... The natural enemies of pest species are usually most affected by the surrounding landscape. There ...
Here Today, Gone Tomorrow
... also saw nature as inexhaustibly sustainable, which we now know is the case only if we care for it. It is not difficult to forgive destruction in the past which resulted from ignorance. Today, however, we have access to more information, and it is essential that we re-examine ethically what we have ...
... also saw nature as inexhaustibly sustainable, which we now know is the case only if we care for it. It is not difficult to forgive destruction in the past which resulted from ignorance. Today, however, we have access to more information, and it is essential that we re-examine ethically what we have ...
Key findings
... to extreme climatic events, in combination with regeneration failure, can result in local population extinction and the loss of FGR. Conservation and sustainable management of FGR is therefore a must to ensure that present and future generations continue to benefit from forests and trees. ...
... to extreme climatic events, in combination with regeneration failure, can result in local population extinction and the loss of FGR. Conservation and sustainable management of FGR is therefore a must to ensure that present and future generations continue to benefit from forests and trees. ...
View or download Interim Technical Report
... This Sir Peter Scott Foundation grant funds airfare and helicopter travel that allows the Maui Nui Plant Extinction Prevention Coordinator, Hank Oppenheimer, to implement the recovery actions for the eight critically rare plant species. The funding was received on July 20, 2007 and field work outlin ...
... This Sir Peter Scott Foundation grant funds airfare and helicopter travel that allows the Maui Nui Plant Extinction Prevention Coordinator, Hank Oppenheimer, to implement the recovery actions for the eight critically rare plant species. The funding was received on July 20, 2007 and field work outlin ...
Conservation status of Hooded Plover in New South Wales
... (e.g. seaweed, driftwood), and lined with seaweed, shells or pebbles. Two or three eggs form a clutch, which is laid from late winter to early autumn, with multiple attempts in a season. The incubation period is one month. Downy chicks are precocial and can run soon after hatching and fly well when ...
... (e.g. seaweed, driftwood), and lined with seaweed, shells or pebbles. Two or three eggs form a clutch, which is laid from late winter to early autumn, with multiple attempts in a season. The incubation period is one month. Downy chicks are precocial and can run soon after hatching and fly well when ...
e. - Quia
... When a habitat is very diverse with a variety of different species, it is much healthier and more stable. One of the reasons for this is that disease doesn’t spread as easily in a diverse community. If one species gets a disease, others of its kind are far enough away (due to the variety of other or ...
... When a habitat is very diverse with a variety of different species, it is much healthier and more stable. One of the reasons for this is that disease doesn’t spread as easily in a diverse community. If one species gets a disease, others of its kind are far enough away (due to the variety of other or ...
Protocols for monitoring New Zealand robins (Petroica australis)
... al. unpubl. data). Of 43 North Island robin nests found at Kaharoa during the 1993–94 season, at least 60% failed as a result of predation (Brown 1994). At Kowhai Bush, Kaikoura, of 626 South Island robin nests found during 1971–76, the contents of 57% were preyed upon (Moors & Flack 1979). Taking a ...
... al. unpubl. data). Of 43 North Island robin nests found at Kaharoa during the 1993–94 season, at least 60% failed as a result of predation (Brown 1994). At Kowhai Bush, Kaikoura, of 626 South Island robin nests found during 1971–76, the contents of 57% were preyed upon (Moors & Flack 1979). Taking a ...
Fall2013 - BiodiversityWorks
... day hike, and reported them to us. We met with the beach owners and were thrilled to find the plover family. It was exciting to see them using new habitat and a good reminder that piping plovers need little help from us where human disturbance is limited. Elsewhere on the Island, birds nest on beach ...
... day hike, and reported them to us. We met with the beach owners and were thrilled to find the plover family. It was exciting to see them using new habitat and a good reminder that piping plovers need little help from us where human disturbance is limited. Elsewhere on the Island, birds nest on beach ...
SBI4U Population Dynamics
... Read pages 660-669 in your textbook and then answer the following questions. Measuring and Modeling Population Change ...
... Read pages 660-669 in your textbook and then answer the following questions. Measuring and Modeling Population Change ...
SOUTH DElTfl UlATfR R G f ~...
... know whether the impact of reduced flows on resident fishery is as great as the impact of the recent proliferation of non-native aquatic plants, for example. Higher flows would help somewhat to control these plants, but not in oxbows and other backwaters. Massive hyacinth growths have impeded migrat ...
... know whether the impact of reduced flows on resident fishery is as great as the impact of the recent proliferation of non-native aquatic plants, for example. Higher flows would help somewhat to control these plants, but not in oxbows and other backwaters. Massive hyacinth growths have impeded migrat ...
Canyon Habitat Restoration 101 Manual
... The most common ways of removing weeds is by mechanical removal, such as pulling the weeds out by their roots, or cutting them with tools, or through herbicide application. Herbicide must be applied (usually sprayed) by a certified herbicide applicator with a “Qualified Applicator Certificate“(QAC). ...
... The most common ways of removing weeds is by mechanical removal, such as pulling the weeds out by their roots, or cutting them with tools, or through herbicide application. Herbicide must be applied (usually sprayed) by a certified herbicide applicator with a “Qualified Applicator Certificate“(QAC). ...
The diversity of life forms, so numerous that we have yet to identify
... these, about 170 are candidates for threatened or endangered status. • In heavily populated areas such as the southwest coast and the southern interior, forest harvesting, agriculture, and invasions of exotic species have eliminated and are threatening many native species and ecosystems. Some ecosys ...
... these, about 170 are candidates for threatened or endangered status. • In heavily populated areas such as the southwest coast and the southern interior, forest harvesting, agriculture, and invasions of exotic species have eliminated and are threatening many native species and ecosystems. Some ecosys ...
biolcons_biodiv_loss - digital
... Brownian model of evolution (i.e. constant–variance random process) (Freckleton et al., 2002). When k = 0 trait evolution is independent of phylogeny, while a value of k = 1 indicates that traits covary in direct proportion to species’ shared evolutionary history. We simultaneously estimated k and fi ...
... Brownian model of evolution (i.e. constant–variance random process) (Freckleton et al., 2002). When k = 0 trait evolution is independent of phylogeny, while a value of k = 1 indicates that traits covary in direct proportion to species’ shared evolutionary history. We simultaneously estimated k and fi ...
Habitat Conservation for Birds in the Mississippi Headwaters
... population, while it could be harmful to other species for which the area is primary habitat. This is especially true for birds that are habitat specialists and breed successfully in only one habitat type. Although we know that some species require habitat mosaics or may benefit from secondary habit ...
... population, while it could be harmful to other species for which the area is primary habitat. This is especially true for birds that are habitat specialists and breed successfully in only one habitat type. Although we know that some species require habitat mosaics or may benefit from secondary habit ...
Comparison of species sensitivity distributions based on population
... EC10 at individual level, but the slope of the regression to derive the SSD was generally lower at population than at individual level. In general, HC5 values derived with the ecologically relevant species were lower at population level compared to individual level (this was the case in around 60% o ...
... EC10 at individual level, but the slope of the regression to derive the SSD was generally lower at population than at individual level. In general, HC5 values derived with the ecologically relevant species were lower at population level compared to individual level (this was the case in around 60% o ...
Species at Risk Stations
... Caribou, ancient members of the deer family (Cervidae), are one of Canada’s most widely distributed large mammals. Caribou are unique among Cervids in that both sexes have antlers; however, some females have only one antler or lack them altogether. The Woodland Caribou’s coat is mostly brown in summ ...
... Caribou, ancient members of the deer family (Cervidae), are one of Canada’s most widely distributed large mammals. Caribou are unique among Cervids in that both sexes have antlers; however, some females have only one antler or lack them altogether. The Woodland Caribou’s coat is mostly brown in summ ...
Indirect effect of habitat destruction on ecosystems
... real relationships between habitat destruction and species extinction. At least we can count the following three advantages of the present approach over empirical studies: (i) in our case of theory or simulation, we have found the true cause of extinction; in the present work, Y goes extinct by the ...
... real relationships between habitat destruction and species extinction. At least we can count the following three advantages of the present approach over empirical studies: (i) in our case of theory or simulation, we have found the true cause of extinction; in the present work, Y goes extinct by the ...
11:45 Heupel M
... Mesopredators: 1) should be better at exploiting shared food resources 2) are less specialised hunters than apex predators 3) have less influence on the behaviour of other species ...
... Mesopredators: 1) should be better at exploiting shared food resources 2) are less specialised hunters than apex predators 3) have less influence on the behaviour of other species ...
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.