Air pollution and biodiversity
... date . In general, the studies have concentrated on either specific ecosystems, or individual groups of plants and animals. Whilst these investigations have all been useful in helping to identify the existence and scale of the problem relating to biodiversity and air pollution, they have not, on the ...
... date . In general, the studies have concentrated on either specific ecosystems, or individual groups of plants and animals. Whilst these investigations have all been useful in helping to identify the existence and scale of the problem relating to biodiversity and air pollution, they have not, on the ...
State of Britain`s Mammals 2008 - People`s Trust for Endangered
... the movements of people, resources, money, species or pathogens, globalisation has reached a level that most conservation problems are affected by supra-national forces, and often need solutions at this larger scale too. It is timely, therefore, that 2008 saw a new global assessment of mammal conser ...
... the movements of people, resources, money, species or pathogens, globalisation has reached a level that most conservation problems are affected by supra-national forces, and often need solutions at this larger scale too. It is timely, therefore, that 2008 saw a new global assessment of mammal conser ...
Forestry and Agricultural Management Can Enhance Biodiversity
... diverse communities require fewer pesticides because they are adapted to deal with local pests, whereas monocultures of any plant species require frequent application of pesticides and fertilizers. Pastures composed of native plants require much less maintenance than introduced grass pastures. Natur ...
... diverse communities require fewer pesticides because they are adapted to deal with local pests, whereas monocultures of any plant species require frequent application of pesticides and fertilizers. Pastures composed of native plants require much less maintenance than introduced grass pastures. Natur ...
Ambio 22 - Ecosystem Ecology: The CBL Gonzo Group
... freshwater, nutrients and sediments into estuaries through a variety of mechanisms, and subject most organisms to some degree of stress. However, the "memory" of most estuaries with respect to these events seems to be relatively short (< 5 years) at least for lower levels of the food web. At higher ...
... freshwater, nutrients and sediments into estuaries through a variety of mechanisms, and subject most organisms to some degree of stress. However, the "memory" of most estuaries with respect to these events seems to be relatively short (< 5 years) at least for lower levels of the food web. At higher ...
Chapter 55
... • To estimate current extinction rates and predict how they might change in the near future, biologists use two approaches: ...
... • To estimate current extinction rates and predict how they might change in the near future, biologists use two approaches: ...
Wetlands and Inner Floodplains of the Macquarie Marshes: a
... National Environmental Significance. The Act is only triggered if a particular activity is likely to have a significant impact on any of these matters. Threatened species and ecological communities are one of these Matters of National Environmental Significance. The EPBC Act defines an ecological co ...
... National Environmental Significance. The Act is only triggered if a particular activity is likely to have a significant impact on any of these matters. Threatened species and ecological communities are one of these Matters of National Environmental Significance. The EPBC Act defines an ecological co ...
Distribution, historical development and ecophysiological
... Summary — Approximately 30 Quercus (oak) species occur in the eastern United States, of which Q alba, Q rubra, Q velutina, Q coccinea, Q stellata and Q prinus are among the most dominant. Quercus distribution greatly increased at the beginning of the Holocene epoch (10 000 years BP), but has e ...
... Summary — Approximately 30 Quercus (oak) species occur in the eastern United States, of which Q alba, Q rubra, Q velutina, Q coccinea, Q stellata and Q prinus are among the most dominant. Quercus distribution greatly increased at the beginning of the Holocene epoch (10 000 years BP), but has e ...
Nest predation in New Zealand songbirds: Exotic predators
... (n = 17). Predator control was conducted by means of various traps, bait stations or aerial 1080 poisoning (sodium monofluoroacetate), and targeted the following exotic mammals: mustelids (stoat [Mustela erminea], weasel [M. nivalis], and ferret [M. furo]), cats (Felis catus), rats (Rattus rattus and ...
... (n = 17). Predator control was conducted by means of various traps, bait stations or aerial 1080 poisoning (sodium monofluoroacetate), and targeted the following exotic mammals: mustelids (stoat [Mustela erminea], weasel [M. nivalis], and ferret [M. furo]), cats (Felis catus), rats (Rattus rattus and ...
Components of breeding performance in two competing species
... studies concentrate just on one of these topics, i.e. habitat or individual quality, or the available data do not allow the proper separation of their relative importance in the studied populations. The concept of individual quality was mainly proposed to emphasize the fact that not all individuals ...
... studies concentrate just on one of these topics, i.e. habitat or individual quality, or the available data do not allow the proper separation of their relative importance in the studied populations. The concept of individual quality was mainly proposed to emphasize the fact that not all individuals ...
Allocation in High-Sea Fisheries
... WHY SO LITTLE PROGRESS? Little incentive for very large expenditure with krill fishery minimal given economic constraints ...
... WHY SO LITTLE PROGRESS? Little incentive for very large expenditure with krill fishery minimal given economic constraints ...
Western ringtail possum - WWF
... Western ringtail possum Threats to the western ringtail possum The western ringtail possum has disappeared from 90 per cent of its original range due to a number of threats including habitat loss due to land clearing and logging, and introduced predators such as foxes and cats. Habitat loss has res ...
... Western ringtail possum Threats to the western ringtail possum The western ringtail possum has disappeared from 90 per cent of its original range due to a number of threats including habitat loss due to land clearing and logging, and introduced predators such as foxes and cats. Habitat loss has res ...
effects of grazer richness and composition on algal biomass in a
... biomass. Species also appear to be lost more frequently from higher than from lower trophic levels (Petchey et al. 2004). The loss of a few consumer species can have more profound long-term effects on ecosystem functioning compared to the consequences following the species loss of primary producers ...
... biomass. Species also appear to be lost more frequently from higher than from lower trophic levels (Petchey et al. 2004). The loss of a few consumer species can have more profound long-term effects on ecosystem functioning compared to the consequences following the species loss of primary producers ...
AqUAtic INvAdERS
... surfaces) emerge. It is usually striped with dark bands but can also be pure black or unpigmented. The quagga mussel is larger, up to 4 cm long, with a more-rounded shell. It usually has dark, concentric rings on the shell that are paler near the hinge. There is a small groove near the hinge where b ...
... surfaces) emerge. It is usually striped with dark bands but can also be pure black or unpigmented. The quagga mussel is larger, up to 4 cm long, with a more-rounded shell. It usually has dark, concentric rings on the shell that are paler near the hinge. There is a small groove near the hinge where b ...
landbird conservation plan - Charles Darwin Foundation
... be conducted on the Galapagos Islands, however visiting and collaborating scientists from several countries will carry out their personal analysis and advise from outside of Ecuador. Any actions requiring research or control techniques related to P. downsi will be conducted in collaboration with res ...
... be conducted on the Galapagos Islands, however visiting and collaborating scientists from several countries will carry out their personal analysis and advise from outside of Ecuador. Any actions requiring research or control techniques related to P. downsi will be conducted in collaboration with res ...
American Burying Beetle Nicrophorus americanus
... the currently disjunct Block Island, Rhode Island, population, and the two western United States populations each contain an unknown, though certainly much larger, number of individuals. Limiting factors and threats There is ongoing discussion regarding the cause of the decline in the range and abun ...
... the currently disjunct Block Island, Rhode Island, population, and the two western United States populations each contain an unknown, though certainly much larger, number of individuals. Limiting factors and threats There is ongoing discussion regarding the cause of the decline in the range and abun ...
PDF - Smithsonian Tropical Research Institute
... Strong 1977; Basset 1996). Many studies of rainforest insects have reported a higher abundance, activity or diversity of insect herbivores in the upper canopy than in the understorey (e.g. Sutton 1983; Basset et al. 1992). However, these studies compared whole forest strata, rather than comparing th ...
... Strong 1977; Basset 1996). Many studies of rainforest insects have reported a higher abundance, activity or diversity of insect herbivores in the upper canopy than in the understorey (e.g. Sutton 1983; Basset et al. 1992). However, these studies compared whole forest strata, rather than comparing th ...
Population size and the risk of local extinction: empirical evidence
... Stöcklin 1997) for population size, have also reported negative effects of small population size on survival. In contrast, Husband and Barrett (1996) found no such relationship in Eichhornia paniculata, an aquatic plant of ephemeral pools in north-east Brazil, which they attributed to the frequent ...
... Stöcklin 1997) for population size, have also reported negative effects of small population size on survival. In contrast, Husband and Barrett (1996) found no such relationship in Eichhornia paniculata, an aquatic plant of ephemeral pools in north-east Brazil, which they attributed to the frequent ...
Biodiversity of Rangelands - Society For Range Management
... Flather, C.H. and C.H. Sieg. “Application of Montreal Process Criterion 1 - Conservation of Biological Diversity To Rangeland Sustainability.” The International Journal of Sustainable Development and World Ecology, 2000. Vol 7, Number 2, p81-96. Sieg, C.H., C.H. Flather and S. McCanny. “Recent Biodi ...
... Flather, C.H. and C.H. Sieg. “Application of Montreal Process Criterion 1 - Conservation of Biological Diversity To Rangeland Sustainability.” The International Journal of Sustainable Development and World Ecology, 2000. Vol 7, Number 2, p81-96. Sieg, C.H., C.H. Flather and S. McCanny. “Recent Biodi ...
Erik Trond Aschehoug
... 7. Xiao, S., Callaway, R. M., Newcombe, G., and E.T. Aschehoug*. 2012. Models of experimental competitive intensities predict home and away differences in invasive impact and the effects of an endophytic mutualist. American Naturalist 180:707-718 6. Aschehoug, E.T., Metlen, K.L., Callaway, R.M. and ...
... 7. Xiao, S., Callaway, R. M., Newcombe, G., and E.T. Aschehoug*. 2012. Models of experimental competitive intensities predict home and away differences in invasive impact and the effects of an endophytic mutualist. American Naturalist 180:707-718 6. Aschehoug, E.T., Metlen, K.L., Callaway, R.M. and ...
Climate Change Risk Assessment Comment
... Despite these issues and some concern over the varied level of analysis of the different impacts, participants provided a valuable review of the impacts list. Some general comments were that the list over-emphasized hydrological issues and that it was important to take account of other perspectives ...
... Despite these issues and some concern over the varied level of analysis of the different impacts, participants provided a valuable review of the impacts list. Some general comments were that the list over-emphasized hydrological issues and that it was important to take account of other perspectives ...
methods - San Francisco State University
... warmer temperatures. Changes in precipitation patterns and water management will exacerbate this impact, especially given the increased societal demands for water in a semi-arid climate. The composition, structure and dynamics of tidal wetland plant and bird communities will be significantly changed ...
... warmer temperatures. Changes in precipitation patterns and water management will exacerbate this impact, especially given the increased societal demands for water in a semi-arid climate. The composition, structure and dynamics of tidal wetland plant and bird communities will be significantly changed ...
Baseline Environmental Conditions The methods used to collect and
... and vegetation for all Three Proposed Projects are described in Section 3.0 of the Keystone EA in Appendix K. The results of baseline studies for the Big Silver Creek Waterpower Project are summarized below. A complete description of baseline conditions is provided in the Keystone EA in Appendix K, ...
... and vegetation for all Three Proposed Projects are described in Section 3.0 of the Keystone EA in Appendix K. The results of baseline studies for the Big Silver Creek Waterpower Project are summarized below. A complete description of baseline conditions is provided in the Keystone EA in Appendix K, ...
Threatened species of the Northern Territory
... specimen from Alexandria appears to be anomalous, in that the Barkly Tablelands does not appear to be suitable habitat. However, no detail was given of the habitat in which it was found there, and the locality may be very imprecise. Its diet comprises mostly invertebrates, but it may also take small ...
... specimen from Alexandria appears to be anomalous, in that the Barkly Tablelands does not appear to be suitable habitat. However, no detail was given of the habitat in which it was found there, and the locality may be very imprecise. Its diet comprises mostly invertebrates, but it may also take small ...
Wildlife in Managed Forests: Spotted Owl
... At the time of listing, an assumption was made that there was very limited suitable habitat on non-federal lands. Since then, studies throughout the owl’s range have broadened scientists’ knowledge. In some cases, the assumptions about suitable habitat on non-federal lands were not validated. While ...
... At the time of listing, an assumption was made that there was very limited suitable habitat on non-federal lands. Since then, studies throughout the owl’s range have broadened scientists’ knowledge. In some cases, the assumptions about suitable habitat on non-federal lands were not validated. While ...
Biological Dynamics of Forest Fragments Project
The Biological Dynamics of Forest Fragments Project, originally called the Minimum Critical Size of Ecosystems Project is a large-scale ecological experiment looking at the effects of habitat fragmentation on tropical rainforest; it is one of the most expensive biology experiments ever run. The experiment, which was established in 1979 is located near Manaus, in the Brazilian Amazon. The project is jointly managed by the Smithsonian Institution and INPA, the Brazilian Institute for Research in the Amazon.The project was initiated in 1979 by Thomas Lovejoy to investigate the SLOSS debate. Initially named the Minimum Critical Size of Ecosystems Project, the project created forest fragments of sizes 1 hectare (2 acres), 10 hectares (25 acres), and 100 hectares (247 acres). Data were collected prior to the creation of the fragments and studies of the effects of fragmentation now exceed 25 years.As of October 2010 562 publications and 143 graduate dissertations and theses had emerged from the project.