The Role of Bankside Habitat in River Ecology
... addressed ,problems associated with low flows,- invertebrate .association with habitat types, and various aspects of river corridor management.andriver habitat surveys. However none of these studies have addressed, in a holistic sense, the marginal zone of-rivers. The interactions.. between plants,, ...
... addressed ,problems associated with low flows,- invertebrate .association with habitat types, and various aspects of river corridor management.andriver habitat surveys. However none of these studies have addressed, in a holistic sense, the marginal zone of-rivers. The interactions.. between plants,, ...
Sage-Grouse and Indirect Interactions: Potential Implications of
... Using published information, including studies data series on coyote abundance and sageconducted outside sagebrush steppe habitat grouse productivity in Oregon, found a signifi- ...
... Using published information, including studies data series on coyote abundance and sageconducted outside sagebrush steppe habitat grouse productivity in Oregon, found a signifi- ...
Calomys laucha
... Calomys laucha is found in the Chaco regions of South America, including those of Paraguay, central Argentina, southern Bolivia, southeastern Brazil, and Uruguay (Bilenca and Kravetz 1999). The Chaco can be divided into two sub-regions, the Chaco Austral of Argentina and the Chaco Boreal of Paraguay ...
... Calomys laucha is found in the Chaco regions of South America, including those of Paraguay, central Argentina, southern Bolivia, southeastern Brazil, and Uruguay (Bilenca and Kravetz 1999). The Chaco can be divided into two sub-regions, the Chaco Austral of Argentina and the Chaco Boreal of Paraguay ...
PARTITIONING OF TIME AS AN ECOLOGICAL RESOURCE Noga
... activity of pollinators at each Acacia species clearly followed the temporal separation between species in pollen release, so the ecological consequences of temporal partitioning have actually been demonstrated. The interest in the role of competition in evolution and in structuring communities also ...
... activity of pollinators at each Acacia species clearly followed the temporal separation between species in pollen release, so the ecological consequences of temporal partitioning have actually been demonstrated. The interest in the role of competition in evolution and in structuring communities also ...
Conceptual issues in local adaptation
... well-delimited habitat patches, or may represent arbitrary sampling units in a continuous species range. Similarly, the spatial variation in the environment may be discrete, with several distinct habitat types, or it may consist of continuous environmental gradients, whereby a ÔhabitatÕ represents t ...
... well-delimited habitat patches, or may represent arbitrary sampling units in a continuous species range. Similarly, the spatial variation in the environment may be discrete, with several distinct habitat types, or it may consist of continuous environmental gradients, whereby a ÔhabitatÕ represents t ...
Does dispersal influence intraspecific competition in a stream
... Metacommunity ecology emphasizes the role of dispersal in linking local processes across space. Competition is one such local process that can be affected by dispersal. Dispersal can influence intraspecific trait variation, thereby affecting the strength of intraspecific competition and, consequentl ...
... Metacommunity ecology emphasizes the role of dispersal in linking local processes across space. Competition is one such local process that can be affected by dispersal. Dispersal can influence intraspecific trait variation, thereby affecting the strength of intraspecific competition and, consequentl ...
curriculum vitae - Towson University
... Suding. 2005. Do individual plant species show predictable responses to nitrogen addition across multiple experiments? Oikos 110:547-555. Hobbie, S.E., L. Gough, and G.R. Shaver. 2005. Species compositional differences on different-aged glacial landscapes drive contrasting responses of tundra to nut ...
... Suding. 2005. Do individual plant species show predictable responses to nitrogen addition across multiple experiments? Oikos 110:547-555. Hobbie, S.E., L. Gough, and G.R. Shaver. 2005. Species compositional differences on different-aged glacial landscapes drive contrasting responses of tundra to nut ...
Direct and Indirect Effects of Wolves on Interior
... work. Summer field volunteers were N. Vinciguerra, M. Sutton, T. Floberg, R. Pyles, K. Colson, M. Mercier, K. Moeller, J. Rose, S. Langley, E. Leonhardt, P. Detwiller, E. Nakanishi, and N. Peterson, who enthusiastically donated their time and hard work to count hare poo and lug Sherman traps across ...
... work. Summer field volunteers were N. Vinciguerra, M. Sutton, T. Floberg, R. Pyles, K. Colson, M. Mercier, K. Moeller, J. Rose, S. Langley, E. Leonhardt, P. Detwiller, E. Nakanishi, and N. Peterson, who enthusiastically donated their time and hard work to count hare poo and lug Sherman traps across ...
A meso-predator release of stickleback promotes recruitment of
... only, whereas the role of biological communities for regulating ecosystem functioning has only been incorporated in lake management (Søndergaard et al., 2007). In order to evaluate potential synergistic effects of fisheries exploitation and coastal eutrophication, large-scale food web studies are str ...
... only, whereas the role of biological communities for regulating ecosystem functioning has only been incorporated in lake management (Søndergaard et al., 2007). In order to evaluate potential synergistic effects of fisheries exploitation and coastal eutrophication, large-scale food web studies are str ...
Wildlife in alpine and sub-alpine habitats
... goats, remain in their high elevation ‘islands’ yearround, and leave only to travel to other alpine patches. However, the majority of species move to lower elevation habitats at some life history stage. Thus, connectivity is a key ecological process to maintain for alpine wildlife. Anthropogenically ...
... goats, remain in their high elevation ‘islands’ yearround, and leave only to travel to other alpine patches. However, the majority of species move to lower elevation habitats at some life history stage. Thus, connectivity is a key ecological process to maintain for alpine wildlife. Anthropogenically ...
Scale-dependent interactions and community
... Abstract Recent theory suggests that scale-dependent interaction between facilitation and competition can generate spatial structure in ecological communities. The application of this hypothesis, however, has been limited to systems with little underlying heterogeneity. We evaluated this prediction ...
... Abstract Recent theory suggests that scale-dependent interaction between facilitation and competition can generate spatial structure in ecological communities. The application of this hypothesis, however, has been limited to systems with little underlying heterogeneity. We evaluated this prediction ...
Cortex: psychophysics, imaging and perception
... Over the last two decades hearing instruments have turned into intelligent systems offering a range of ...
... Over the last two decades hearing instruments have turned into intelligent systems offering a range of ...
Full Program
... with limited data and in the role of variance, risk, and extreme events in population dynamics. Because these problems are complex, a large part of his research involves method and software development and is often highly collaborative. His work spans across taxa (e.g. birds, moths, grizzly bears, s ...
... with limited data and in the role of variance, risk, and extreme events in population dynamics. Because these problems are complex, a large part of his research involves method and software development and is often highly collaborative. His work spans across taxa (e.g. birds, moths, grizzly bears, s ...
Research Article Effects of Contralateral Acoustic Stimulation on
... (Zwicker and Schloth 1984), we focused our measurements on SOAE frequencies so as to reliably locate threshold minima and to make precise comparisons between magnitude and frequency shifts in the SOAE and behavioral measures. However, this approach was complicated by the perceptual effects associate ...
... (Zwicker and Schloth 1984), we focused our measurements on SOAE frequencies so as to reliably locate threshold minima and to make precise comparisons between magnitude and frequency shifts in the SOAE and behavioral measures. However, this approach was complicated by the perceptual effects associate ...
Importance of interaural time difference in coding the azimuth in the
... Such an impression is referred to as virtual acoustic space, or VAS for short. VAS has two major advantages when compared with non-virtual dichotic stimulation. HRTFs simulate a free-field situation evoking a spatial percept, containing all natural spatial cues available for sound localization. At t ...
... Such an impression is referred to as virtual acoustic space, or VAS for short. VAS has two major advantages when compared with non-virtual dichotic stimulation. HRTFs simulate a free-field situation evoking a spatial percept, containing all natural spatial cues available for sound localization. At t ...
Artificial Night Lighting and Protected Lands
... addition to light reflected in the atmosphere. Finally, urban environments have many artificial light sources, but still can support significant biodiversity in the form of both resident and migratory species. Migratory birds are attracted to lighted structures at night and collide with windows duri ...
... addition to light reflected in the atmosphere. Finally, urban environments have many artificial light sources, but still can support significant biodiversity in the form of both resident and migratory species. Migratory birds are attracted to lighted structures at night and collide with windows duri ...
Unifying sources and sinks in ecology andEarth sciences
... reached a point where the source and sink concepts need to be re-examined, so that greater clarity and greater consistency is attained across disciplines. Failure to do so might lead to conceptual confusion, fragmentation of research agendas, lack of communication among disciplines, and ultimately r ...
... reached a point where the source and sink concepts need to be re-examined, so that greater clarity and greater consistency is attained across disciplines. Failure to do so might lead to conceptual confusion, fragmentation of research agendas, lack of communication among disciplines, and ultimately r ...
Poster Abstracts - American Auditory Society
... components. Data were acquired using a simultaneous dual-‐tone stimulus (500 Hz and 2000 Hz) with one signal presented through an insert earphone and the other through a bone vibrator. ASSR data we ...
... components. Data were acquired using a simultaneous dual-‐tone stimulus (500 Hz and 2000 Hz) with one signal presented through an insert earphone and the other through a bone vibrator. ASSR data we ...
Bottom-Up and Top-Down Interactions across Aquatic
... populations) of barnacles on a rocky shoreline are open (i.e., offspring may not return to their population of origin; instead, they disperse and populate a different population). However, over scales of 100s of km, they can be viewed as part of a larger (closed) metapopulation (Hanski and Gilpin, 1 ...
... populations) of barnacles on a rocky shoreline are open (i.e., offspring may not return to their population of origin; instead, they disperse and populate a different population). However, over scales of 100s of km, they can be viewed as part of a larger (closed) metapopulation (Hanski and Gilpin, 1 ...
Characterizing Nekton use of the Largest Unfished Oyster Reef in
... habitats, collection limitation resulting from its large vertical relief (>1 m) and complex 3-dimensional structure, or habitat selection resulting from water depth. Because the majority of crustaceans and resident and transient fish were observed within the marsh edge and nonvegetated shallow habita ...
... habitats, collection limitation resulting from its large vertical relief (>1 m) and complex 3-dimensional structure, or habitat selection resulting from water depth. Because the majority of crustaceans and resident and transient fish were observed within the marsh edge and nonvegetated shallow habita ...
Ecological Effects of Pesticides
... recognizable structure and function, and matter and energy are exchanged and cycled through the ecosystem. Over time, better adapted species come to dominate; entirely new species may change, perhaps in a new or altered ecosystem. 1.2 The organisation in ecosystems The basic level of ecological orga ...
... recognizable structure and function, and matter and energy are exchanged and cycled through the ecosystem. Over time, better adapted species come to dominate; entirely new species may change, perhaps in a new or altered ecosystem. 1.2 The organisation in ecosystems The basic level of ecological orga ...
HEARING: A 21 CENTURY PARADIGM ELECTROCHEMISTRY OF
... colored noise) can be characterized. Kleppe has provided a figure illustrating colored noise3. Colored noise need not be random in character. It can be varied in the extreme to the case of a single tone of arbitrary frequency as a background. Intermediate between these two extremes are situations wh ...
... colored noise) can be characterized. Kleppe has provided a figure illustrating colored noise3. Colored noise need not be random in character. It can be varied in the extreme to the case of a single tone of arbitrary frequency as a background. Intermediate between these two extremes are situations wh ...
Bat Echolocation: Adaptations for Prey Detection and Capture
... To optimize detection range and target localization most bats use a combination of narrowband and broadband FM calls switching from one to the other depending on the situation. Most species also use harmonics (Neuweiler 1984; Schnitzler and Kalko 2001) to broaden the bandwidth of their calls. Echolo ...
... To optimize detection range and target localization most bats use a combination of narrowband and broadband FM calls switching from one to the other depending on the situation. Most species also use harmonics (Neuweiler 1984; Schnitzler and Kalko 2001) to broaden the bandwidth of their calls. Echolo ...
HABITAT COMPLEXITY INFLUENCES CASCADING EFFECTS OF MULTIPLE PREDATORS J H. G
... and habitat complexity, ecologists have yet to fully integrate how the interaction between habitat complexity and multiple predators influences the relative strength of trophic cascades. Almost all systems are characterized by multiple predators and variation in habitat complexity. Therefore, investi ...
... and habitat complexity, ecologists have yet to fully integrate how the interaction between habitat complexity and multiple predators influences the relative strength of trophic cascades. Almost all systems are characterized by multiple predators and variation in habitat complexity. Therefore, investi ...
NOISE INDUCED HEARING LOSS IN A PAPER MILL IN KZN
... The unit used to measure how loud a sound is Decibel. The human ear is most sensitive to sounds at or near the centre of its frequency range. This provides the basis for the A scale weighting to assess the impact of noise on people. Sound generated at frequencies to which the ear is less sensitive h ...
... The unit used to measure how loud a sound is Decibel. The human ear is most sensitive to sounds at or near the centre of its frequency range. This provides the basis for the A scale weighting to assess the impact of noise on people. Sound generated at frequencies to which the ear is less sensitive h ...
Soundscape ecology
Soundscape ecology is the study of sound within a landscape and its effect on organisms. Sounds may be generated by organisms (biophony), by the physical environment (geophony), or by humans (anthrophony). Soundscape ecologists seek to understand how these different sound sources interact across spatial scales and through time. Variation in soundscapes may have wide-ranging ecological effects as organisms often obtain information from environmental sounds. Soundscape ecologists use recording devices, audio tools, and elements of traditional ecological analyses to study soundscape structure. Increasingly, anthrophony, sometimes referred to in older, more archaic terminology as anthropogenic noise dominates soundscapes, and this type of noise pollution or disturbance has a negative impact on a wide range of organisms. The preservation of natural soundscapes is now a recognized conservation goal.