The harlequin ladybird, Harmonia axyridis
... this species has an almost global distribution. Therefore, it is timely to provide a world overview of research and perspectives. Indeed, the collaborative nature of the research from around the world on this species is inspiring. As concerns increased with respect to the threats posed by H. axyridi ...
... this species has an almost global distribution. Therefore, it is timely to provide a world overview of research and perspectives. Indeed, the collaborative nature of the research from around the world on this species is inspiring. As concerns increased with respect to the threats posed by H. axyridi ...
ESA 2010 handbook - Ecological Society of Australia
... or species is within the ‘normal’ range for the system. The vertebrate fossil deposits of the Naracoorte Caves World Heritage Area in south-eastern South Australia contain long term records of ecosystem response to multiple climate fluctuations at one location and provide an opportunity to examine t ...
... or species is within the ‘normal’ range for the system. The vertebrate fossil deposits of the Naracoorte Caves World Heritage Area in south-eastern South Australia contain long term records of ecosystem response to multiple climate fluctuations at one location and provide an opportunity to examine t ...
Redalyc.Independent effects of grazing and tide pool habitats on the
... Background: Prevailing environmental conditions can modulate the structuring role of biotic interactions. In intertidal habitats, less stressful environmental conditions and/or higher grazer densities may allow grazing effects to be stronger in tide pools than on emergent rocks. To test this hypothe ...
... Background: Prevailing environmental conditions can modulate the structuring role of biotic interactions. In intertidal habitats, less stressful environmental conditions and/or higher grazer densities may allow grazing effects to be stronger in tide pools than on emergent rocks. To test this hypothe ...
Fauna sensitive road design guidelines
... are a major challenge to planners and ecologists, as management and design must consider the wider landscape context. ...
... are a major challenge to planners and ecologists, as management and design must consider the wider landscape context. ...
SPECIES-AREA RELATIONSHIPS OF CLIFF SYSTEM
... hike in and prepare for climbs, and on the cliff edge when they top off. The fruticose and foliose lichens were among the groups most impacted by climbing (Farris 1998). Other studies reveal an increase in abundance and diversity of crustose lichen in climbing routes (Smith 1998, Hill 2009). Many li ...
... hike in and prepare for climbs, and on the cliff edge when they top off. The fruticose and foliose lichens were among the groups most impacted by climbing (Farris 1998). Other studies reveal an increase in abundance and diversity of crustose lichen in climbing routes (Smith 1998, Hill 2009). Many li ...
Brown-headed Cowbirds - American Birding Association
... (DeCapita 2000) involves the Kirtland’s Warbler, a species whose rarity led to a decision in the 1940s to conduct a complete census in its lower Michigan breeding grounds every 10 years. There were 432 and 502 singing males in 1951 and 1961, respectively, but only 201 in 1971. The apparent populatio ...
... (DeCapita 2000) involves the Kirtland’s Warbler, a species whose rarity led to a decision in the 1940s to conduct a complete census in its lower Michigan breeding grounds every 10 years. There were 432 and 502 singing males in 1951 and 1961, respectively, but only 201 in 1971. The apparent populatio ...
Cost-efficient fenced reserves for conservation: single
... disease) than a single fence. The continuous management of fenced reserves also allows for recolonization attempts in the event of local extinction in a two-fence system. The use of the second reserve as an insurance population means that a threatened species will only be lost if a catastrophe affec ...
... disease) than a single fence. The continuous management of fenced reserves also allows for recolonization attempts in the event of local extinction in a two-fence system. The use of the second reserve as an insurance population means that a threatened species will only be lost if a catastrophe affec ...
Key Role of European Rabbits in the Conservation of the Western
... In spite of recent population declines (see later), rabbits still can reach high abundances in some of their natural Mediterranean habitats, where their ecological effects are evident (Ward 2005). Nevertheless, because they evolved in this area, they are central to processes that maintain integrity ...
... In spite of recent population declines (see later), rabbits still can reach high abundances in some of their natural Mediterranean habitats, where their ecological effects are evident (Ward 2005). Nevertheless, because they evolved in this area, they are central to processes that maintain integrity ...
Background - Sacramento - California State University
... dependent on this variance. The dynamics of this system are generated by the existence of trade-offs among species that allow them to specialize on different patch types. Dispersal is important and enables covariance between the community and environment (Leibold et al. 2004). The mass-effect perspe ...
... dependent on this variance. The dynamics of this system are generated by the existence of trade-offs among species that allow them to specialize on different patch types. Dispersal is important and enables covariance between the community and environment (Leibold et al. 2004). The mass-effect perspe ...
- Wiley Online Library
... substantially modified as a population spreads into unoccupied space, such that key assumptions made in deriving the Hovestadt et al (2010) function are unlikely to remain valid. Most importantly in the context of this paper, while a discussion on the relative merits of the functions is likely to co ...
... substantially modified as a population spreads into unoccupied space, such that key assumptions made in deriving the Hovestadt et al (2010) function are unlikely to remain valid. Most importantly in the context of this paper, while a discussion on the relative merits of the functions is likely to co ...
Use of artificial tree hollows by Australian birds and bats
... A range of hollow designs has been employed but there is a limited understanding of favoured designs. General designs (e.g. front-entry plywood boxes) have been used extensively by some species and should continue to be used until more effective designs are identified. Species tend to use artificial h ...
... A range of hollow designs has been employed but there is a limited understanding of favoured designs. General designs (e.g. front-entry plywood boxes) have been used extensively by some species and should continue to be used until more effective designs are identified. Species tend to use artificial h ...
Long-term Effects of Shifts in Grazing Pressure on
... Sheep (Ovis aries) are the main large herbivore in Norwegian mountains during summer and these herbivores have shaped alpine plant communities over a long land-use history. Sheep are selective feeders, and increased livestock densities increases the pressure on some plant species and growth form gro ...
... Sheep (Ovis aries) are the main large herbivore in Norwegian mountains during summer and these herbivores have shaped alpine plant communities over a long land-use history. Sheep are selective feeders, and increased livestock densities increases the pressure on some plant species and growth form gro ...
Verween et al. 2006
... Two questions can be raised; (1) why R. cuneata was first found along the Schelde estuary and (2) why it did not appear or has been detected in European waters earlier. Nehring (2006) hypothesized that estuaries, often being a combination of brackish water with its unsaturated niches and intensive i ...
... Two questions can be raised; (1) why R. cuneata was first found along the Schelde estuary and (2) why it did not appear or has been detected in European waters earlier. Nehring (2006) hypothesized that estuaries, often being a combination of brackish water with its unsaturated niches and intensive i ...
ecological and reproductive character displacement
... Simply observing one of these patterns, however, is not sufficient to conclude that character displacement is its cause, and Schluter and McPhail (1992) and Waage (1979) describe alternatives that must be considered and ruled out. Put briefly, the character must be relevant to the process being cons ...
... Simply observing one of these patterns, however, is not sufficient to conclude that character displacement is its cause, and Schluter and McPhail (1992) and Waage (1979) describe alternatives that must be considered and ruled out. Put briefly, the character must be relevant to the process being cons ...
Blue Mussel Seafood Watch Report
... returned to the habitat unharmed, so effects on non-target species are negligible. Mussel dredges may cause some harm to incidentally captured invertebrates. Mussel dredges also cause more damage to the bottom habitat than hand rakes, but there are measures in place to limit the impacts of dredge ge ...
... returned to the habitat unharmed, so effects on non-target species are negligible. Mussel dredges may cause some harm to incidentally captured invertebrates. Mussel dredges also cause more damage to the bottom habitat than hand rakes, but there are measures in place to limit the impacts of dredge ge ...
Synchronous dynamics of zooplankton competitors
... e"(1=2)((n"ti )=s) (#) dn is a Gaussian localization function in time n. The localized wavelet modulus ratio computes the ratio of the actual amplitude of community fluctuations against the cumulative amplitude of population fluctuations at each time and scale. The numerator in equation (2.3) uses t ...
... e"(1=2)((n"ti )=s) (#) dn is a Gaussian localization function in time n. The localized wavelet modulus ratio computes the ratio of the actual amplitude of community fluctuations against the cumulative amplitude of population fluctuations at each time and scale. The numerator in equation (2.3) uses t ...
Descriptions of the wildlife species that commonly occur in the
... The publishers do not warrant that the information in this report is free from errors or omissions. The publishers do not accept any form of liability, be it contractual, tortuous or otherwise, for the contents of this report for any consequences arising from its use or any reliance placed on it. Th ...
... The publishers do not warrant that the information in this report is free from errors or omissions. The publishers do not accept any form of liability, be it contractual, tortuous or otherwise, for the contents of this report for any consequences arising from its use or any reliance placed on it. Th ...
Harvestmen and Pseudoscorpions - Digital Commons @ Michigan
... are suitable for finding inhabitants within a moss mat, but one needs to be more clever to achieve representative sampling of those organisms that live on the surface. The harvestmen can move fairly rapidly, so those living in peatlands on the surface are unlikely ever to be sampled by removing core ...
... are suitable for finding inhabitants within a moss mat, but one needs to be more clever to achieve representative sampling of those organisms that live on the surface. The harvestmen can move fairly rapidly, so those living in peatlands on the surface are unlikely ever to be sampled by removing core ...
Anegada Iguana, Cyclura pinguis SPECIES RECOVERY PLAN
... human- mediated introductions. At least four islands in the BVI now support small populations of C. pinguis, one of which (Guana) is large enough to be considered biologically significant. However the most important and robust population, not only from a conservation genetics and management perspect ...
... human- mediated introductions. At least four islands in the BVI now support small populations of C. pinguis, one of which (Guana) is large enough to be considered biologically significant. However the most important and robust population, not only from a conservation genetics and management perspect ...
108790 No Species Text Q6 - Department of Environment, Water
... and commitment needed by all South Australians if we are to prevent further loss of our known native species from human impacts, and if we are to conserve biodiversity for future generations. The 100-year vision for No Species Loss is: ...
... and commitment needed by all South Australians if we are to prevent further loss of our known native species from human impacts, and if we are to conserve biodiversity for future generations. The 100-year vision for No Species Loss is: ...
- Warwick WRAP
... principle that “complexity begets instability”, and has become known as May’s Paradox. One solution might be that the linear stability analysis used by May and many subsequent studies does not capture essential characteristics of ecosystem dynamics, and much work has gone into exploring how more acc ...
... principle that “complexity begets instability”, and has become known as May’s Paradox. One solution might be that the linear stability analysis used by May and many subsequent studies does not capture essential characteristics of ecosystem dynamics, and much work has gone into exploring how more acc ...
Noxious Weeds in Washington State
... orchardists millions of dollars in control efforts and lost crop production, which can contribute to higher prices of food for all of us. Invasive knapweeds and yellow starthistle outcompete forage species, reducing grazing quality of rangeland and pastures. Infestations of these species result in a ...
... orchardists millions of dollars in control efforts and lost crop production, which can contribute to higher prices of food for all of us. Invasive knapweeds and yellow starthistle outcompete forage species, reducing grazing quality of rangeland and pastures. Infestations of these species result in a ...
Synchronous dynamics of zooplankton competitors prevail in
... e(1=2)((nti )=s) () dn is a Gaussian localization function in time n. The localized wavelet modulus ratio computes the ratio of the actual amplitude of community fluctuations against the cumulative amplitude of population fluctuations at each time and scale. The numerator in equation (2.3) uses t ...
... e(1=2)((nti )=s) () dn is a Gaussian localization function in time n. The localized wavelet modulus ratio computes the ratio of the actual amplitude of community fluctuations against the cumulative amplitude of population fluctuations at each time and scale. The numerator in equation (2.3) uses t ...
University of Groningen Plasticity in daily timing of behavior van der
... timescale (phylogenetic level). (3) Review temporal niche switching within an individual’s lifespan. (4) Evaluate possible underlying mechanisms for temporal niche switching. (5) Describe a new hypothesis of circadian thermo-energetics which may explain several cases of temporal niche switching in m ...
... timescale (phylogenetic level). (3) Review temporal niche switching within an individual’s lifespan. (4) Evaluate possible underlying mechanisms for temporal niche switching. (5) Describe a new hypothesis of circadian thermo-energetics which may explain several cases of temporal niche switching in m ...
Deep-Sea Hydrothermal Vent Communities C
... by the physical and chemical environment, which sets limits on species’ distributions and abundances. Invertebrate species interactions determine community composition within these limits through processes that parallel those observed in coastal habitats, but sometimes in ways that challenge establi ...
... by the physical and chemical environment, which sets limits on species’ distributions and abundances. Invertebrate species interactions determine community composition within these limits through processes that parallel those observed in coastal habitats, but sometimes in ways that challenge establi ...
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.