Moose Scientific Name - Province of British Columbia
... Moose feed in a variety of forest types including coniferous, deciduous and mixed forests. Their diet varies with the season. Forage preferences are determined by both the seasonal variations in protein content and by availability. Woody forage is eaten in all seasons, but is more commonly taken in ...
... Moose feed in a variety of forest types including coniferous, deciduous and mixed forests. Their diet varies with the season. Forage preferences are determined by both the seasonal variations in protein content and by availability. Woody forage is eaten in all seasons, but is more commonly taken in ...
early primary succession on mount st. helens: impact of insect
... with biomass (Pearson’s r 5 0.95, df 5 49, P , 0.0001), and herbivore damage were measured at each census. Herbivory.—Foliage damage by leaf-mining Chionodes caterpillars, which is conspicuous, was rare until 1993. It was quantified first as present or absent (1993), then, in 1994 –1995, on a 0 –5 s ...
... with biomass (Pearson’s r 5 0.95, df 5 49, P , 0.0001), and herbivore damage were measured at each census. Herbivory.—Foliage damage by leaf-mining Chionodes caterpillars, which is conspicuous, was rare until 1993. It was quantified first as present or absent (1993), then, in 1994 –1995, on a 0 –5 s ...
CHAPTER 23 ECOLOGY OF POPULATIONS
... the postreproductive group being smallest due to mortality; this is characteristic of stable populations. 5. An urn-shaped diagram indicates the postreproductive group is largest and the prereproductive group is smallest, a result of the birthrate falling below the death rate; this is characteristic ...
... the postreproductive group being smallest due to mortality; this is characteristic of stable populations. 5. An urn-shaped diagram indicates the postreproductive group is largest and the prereproductive group is smallest, a result of the birthrate falling below the death rate; this is characteristic ...
Chapter 52 - Canyon ISD
... – Two weeks later, 100 hares are captured, and 10 have already been marked (recaptures = 10%) – Since 50 hares were originally marked, the entire population would be about 500 hares ...
... – Two weeks later, 100 hares are captured, and 10 have already been marked (recaptures = 10%) – Since 50 hares were originally marked, the entire population would be about 500 hares ...
Slide 1
... Succession of one community by another goes on until a mature, stable community develops. Such a community is called a climax community. In an ecosystem with climax community, the conditions continue to be suitable for all members. The climax community remains until an event such as, fire, flood, ...
... Succession of one community by another goes on until a mature, stable community develops. Such a community is called a climax community. In an ecosystem with climax community, the conditions continue to be suitable for all members. The climax community remains until an event such as, fire, flood, ...
8.1 Notes
... • However, it may be estimated by looking at average population sizes or by observing a population crash after a certain size has been exceeded. ...
... • However, it may be estimated by looking at average population sizes or by observing a population crash after a certain size has been exceeded. ...
COMPETITION
... Problem: This approach assumes we know what to measure, we often measure what we can rather than what is important or we measure so many things that the important variable is lost in the chaos. Habitat Use: is uniquely defined by what is available. Habitat Selection: Used – Available (+ result is se ...
... Problem: This approach assumes we know what to measure, we often measure what we can rather than what is important or we measure so many things that the important variable is lost in the chaos. Habitat Use: is uniquely defined by what is available. Habitat Selection: Used – Available (+ result is se ...
Gopher tortoises - UCF College of Sciences
... wiregrass (early spring), and opportunistic foraging (seeds, fruits, flowers) • Potentially an important disperser for native grasses and other plants ...
... wiregrass (early spring), and opportunistic foraging (seeds, fruits, flowers) • Potentially an important disperser for native grasses and other plants ...
Complex community and evolutionary responses to habitat
... tried to understand how fragmentation affects food web dynamics [reviewed in 8,17]. However, most examinations of species interactions in fragmented habitats are restricted to two-species models [8] and the few studies that have examined how habitat fragmentation affects multi-trophic interactio ...
... tried to understand how fragmentation affects food web dynamics [reviewed in 8,17]. However, most examinations of species interactions in fragmented habitats are restricted to two-species models [8] and the few studies that have examined how habitat fragmentation affects multi-trophic interactio ...
Metapopulation Ecology - Department of Ecology and Evolutionary
... disturbances, such as drought or human persecution, or biological (often intrinsic) disturbances such as predation and parasitism. The basic result of this model is that, as for the logistic population models, if c > p, then an initially small metapopulation grows towards equilibrium. At equilibrium ...
... disturbances, such as drought or human persecution, or biological (often intrinsic) disturbances such as predation and parasitism. The basic result of this model is that, as for the logistic population models, if c > p, then an initially small metapopulation grows towards equilibrium. At equilibrium ...
DOC file - City of Fort Collins Public Records
... In areas where creeks and streams no longer flow at historic levels the riparian habitat is reduced in size and density. Such water flow impacts can jeopardize the persistence of jumping mice by decreasing the amount of available riparian habitat. Maintaining historic flows or increasing the water t ...
... In areas where creeks and streams no longer flow at historic levels the riparian habitat is reduced in size and density. Such water flow impacts can jeopardize the persistence of jumping mice by decreasing the amount of available riparian habitat. Maintaining historic flows or increasing the water t ...
Dispersal traits determine plant response to habitat
... Johst et al. 2002). Plants will be most vulnerable to fragmentation if their capacities for local persistence and dispersal among patches are low. Translated to a functional perspective, this means that traits enabling a species to survive within and to move between habitat patches confer the abilit ...
... Johst et al. 2002). Plants will be most vulnerable to fragmentation if their capacities for local persistence and dispersal among patches are low. Translated to a functional perspective, this means that traits enabling a species to survive within and to move between habitat patches confer the abilit ...
articles - Cary Institute of Ecosystem Studies
... Figure 1. Diagrammatic representation of processes occurring in oak forest and adjacent non-oak forest relevant to Lyme-disease risk and gypsy moth population dynamics. In fall/winter of a mast year: 1 many acorns are produced; 2 mice in oak forest eat and store acorns and survive winter well; 3 dee ...
... Figure 1. Diagrammatic representation of processes occurring in oak forest and adjacent non-oak forest relevant to Lyme-disease risk and gypsy moth population dynamics. In fall/winter of a mast year: 1 many acorns are produced; 2 mice in oak forest eat and store acorns and survive winter well; 3 dee ...
Chapter 18 – Ecology of Organisms and Populations
... all today. The environmental movement began as the scientific world started noticing that when even small environmental conditions change, there are often drastic consequences for living systems. Once a population, community, or ecosystem is altered, large-scale changes result. WHY? Because these sy ...
... all today. The environmental movement began as the scientific world started noticing that when even small environmental conditions change, there are often drastic consequences for living systems. Once a population, community, or ecosystem is altered, large-scale changes result. WHY? Because these sy ...
Ecology - Aurora City Schools
... densities may vary greatly. The dispersion pattern of a population refers to the way individuals are spaced within their area. These patterns are important characteristics for an ecologist to study, since they provide insights into the environmental effects and social interactions in the population. ...
... densities may vary greatly. The dispersion pattern of a population refers to the way individuals are spaced within their area. These patterns are important characteristics for an ecologist to study, since they provide insights into the environmental effects and social interactions in the population. ...
Review sheet for Midterm #2
... What is the tension-cohesion mechanism of water transport in plants and how does it work? What are the main “control points” of this water flow and how do plants regulate them? How do air temperature and relative humidity account for differences in evaporation rates? What are field capacity and wilt ...
... What is the tension-cohesion mechanism of water transport in plants and how does it work? What are the main “control points” of this water flow and how do plants regulate them? How do air temperature and relative humidity account for differences in evaporation rates? What are field capacity and wilt ...
Effect of Elevation and Type of Habitat on the Abundance and
... 1992), in the spring and the summer, a period during which most scarabaeoid dung beetles are active as adults in the study area (Romero-Alcaraz et al. 1998). These circumstances may become important in determining the spatial distribution of dung beetles along elevational or habitat gradients: eleva ...
... 1992), in the spring and the summer, a period during which most scarabaeoid dung beetles are active as adults in the study area (Romero-Alcaraz et al. 1998). These circumstances may become important in determining the spatial distribution of dung beetles along elevational or habitat gradients: eleva ...
Populations - Cobb Learning
... part of its range. A species whose population size is declining in a way that places it in danger of extinction is called an endangered species. As the population of an endangered species declines, the species loses genetic diversity ...
... part of its range. A species whose population size is declining in a way that places it in danger of extinction is called an endangered species. As the population of an endangered species declines, the species loses genetic diversity ...
Stream and Riparian Zone - North Carolina Wildlife Resources
... resource professional and recommendations to restore hydrology native plant ded if plant communities. Control of invasive exoticdeveloped plants within the riparian zoneand/or may be recommen communities as deemed necessary. the extent of the infestation covers over 50% of the area. Approved herbici ...
... resource professional and recommendations to restore hydrology native plant ded if plant communities. Control of invasive exoticdeveloped plants within the riparian zoneand/or may be recommen communities as deemed necessary. the extent of the infestation covers over 50% of the area. Approved herbici ...
15 Competition 2010
... growth, delay in reproduction, and decrease in reproduction and survival. 5) The theory of competition and coexistence is an extension of logistic growth models. 6) The niche reflects the environmental requirements of species; its dimensions shrink when faced with interspecific competition. 7) Organ ...
... growth, delay in reproduction, and decrease in reproduction and survival. 5) The theory of competition and coexistence is an extension of logistic growth models. 6) The niche reflects the environmental requirements of species; its dimensions shrink when faced with interspecific competition. 7) Organ ...
Populations - Cloudfront.net
... Exponential growth doesn’t continue in natural populations for very long If a new species of organism is introduced into a new environment, at first the population grows slowly, then exponentially, eventually the population growth slows down (the size has not dropped, but the population is growing ...
... Exponential growth doesn’t continue in natural populations for very long If a new species of organism is introduced into a new environment, at first the population grows slowly, then exponentially, eventually the population growth slows down (the size has not dropped, but the population is growing ...
Population Dynamics of the Northern Spotted Owl
... less at sites positive effect on NSO site extinction withold good habitat Less forest higher site extinction rates Less fragmented old forest higher colonization rates ...
... less at sites positive effect on NSO site extinction withold good habitat Less forest higher site extinction rates Less fragmented old forest higher colonization rates ...
White-browed Treecreeper
... No accurate estimates are available of the former numbers of White-browed Treecreepers in Victoria, but the number remaining in Victoria is likely to be less than 1000 (Silveira pers. comm.). In its final recommendation, the Scientific Advisory Committee (1994) determined that the White-browed Treec ...
... No accurate estimates are available of the former numbers of White-browed Treecreepers in Victoria, but the number remaining in Victoria is likely to be less than 1000 (Silveira pers. comm.). In its final recommendation, the Scientific Advisory Committee (1994) determined that the White-browed Treec ...