![the ecological impact of invasive cane toads (bufo marinus) in](http://s1.studyres.com/store/data/001245116_1-241c18fd6db18f16f4a6cba237a28d2a-300x300.png)
the ecological impact of invasive cane toads (bufo marinus) in
... toads attain very high densities (Freeland 1986; Lever 2001). They tolerate a broad range of environmental and climatic conditions and occupy a wide range of habitats (Urban et al. 2007), albeit with a clear preference for anthropogenically degraded sites (Zug and Zug 1979). Ultimately, the cane toa ...
... toads attain very high densities (Freeland 1986; Lever 2001). They tolerate a broad range of environmental and climatic conditions and occupy a wide range of habitats (Urban et al. 2007), albeit with a clear preference for anthropogenically degraded sites (Zug and Zug 1979). Ultimately, the cane toa ...
100 th Annual Meeting, Providence, Rhode Island, April 2008
... Colleen A. Burge, Jean-Francxois Pepin, Nicole Faury, Tristan Renault and Carolyn S. Friedman USING QUANTITATIVE POLYMERASE CHAIN REACTION (Q-PCR) TO DETECT AND QUANTIFY THE OYSTER HERPESVIRUS (OSHV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Russel ...
... Colleen A. Burge, Jean-Francxois Pepin, Nicole Faury, Tristan Renault and Carolyn S. Friedman USING QUANTITATIVE POLYMERASE CHAIN REACTION (Q-PCR) TO DETECT AND QUANTIFY THE OYSTER HERPESVIRUS (OSHV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Russel ...
Abstracts of Technical Papers Presented at the 100th
... BioOne (www.bioone.org) is a nonprofit, online aggregation of core research in the biological, ecological, and environmental sciences. BioOne provides a sustainable online platform for over 170 journals and books published by nonprofit societies, associations, museums, institutions, and presses. You ...
... BioOne (www.bioone.org) is a nonprofit, online aggregation of core research in the biological, ecological, and environmental sciences. BioOne provides a sustainable online platform for over 170 journals and books published by nonprofit societies, associations, museums, institutions, and presses. You ...
- California State University
... and small clearings than in large ones because (1) more zygotes settle near parent plants than further away, and (2) post-settlement mortality is extremely high in clearings (S. R. Dudgeon, unpublished data). Algal zygotes in large clearings often die due to desiccation, herbivory, and water motion ...
... and small clearings than in large ones because (1) more zygotes settle near parent plants than further away, and (2) post-settlement mortality is extremely high in clearings (S. R. Dudgeon, unpublished data). Algal zygotes in large clearings often die due to desiccation, herbivory, and water motion ...
Wolves in the NE - National Wildlife Federation
... No other North American mammal inspires such a wide range of human emotions as the gray wolf (Canis lupus). Feared and admired, cursed and revered, wolves are the stuff of legends and a symbol of America’s vanishing wilderness. Their reputation is larger than life; their role in the restoration of A ...
... No other North American mammal inspires such a wide range of human emotions as the gray wolf (Canis lupus). Feared and admired, cursed and revered, wolves are the stuff of legends and a symbol of America’s vanishing wilderness. Their reputation is larger than life; their role in the restoration of A ...
Durham E-Theses The impact of land reform in Zimbabwe on
... Figure 1.5 Savé Valley Conservancy and resettlement area. The external boundary of SVC (red line) shows the location of perimeter fence prior to FTLRP. Fences were removed from internal property boundaries (black lines). The labels show the names of properties within SVC. The conservancy is surround ...
... Figure 1.5 Savé Valley Conservancy and resettlement area. The external boundary of SVC (red line) shows the location of perimeter fence prior to FTLRP. Fences were removed from internal property boundaries (black lines). The labels show the names of properties within SVC. The conservancy is surround ...
here - Cladocera 2011 | Welcome
... Hydrobiologia publishes original articles in the fields of limnology and marine science that are of interest to th abroad and international audience. A special issue about the IX International Symposium on Cladocera will be published next year. The deadline for submission is December 31, 2011. Furth ...
... Hydrobiologia publishes original articles in the fields of limnology and marine science that are of interest to th abroad and international audience. A special issue about the IX International Symposium on Cladocera will be published next year. The deadline for submission is December 31, 2011. Furth ...
American Fisheries Society
... Across Wisconsin, LMB CPUE has increased significantly over the past 20 years. Concurrently, LMB growth and adult WAE densities have decreased. Although restrictive LMB harvest policies offer one plausible explanation for these trends, other factors such as increased voluntary release of LMB and pot ...
... Across Wisconsin, LMB CPUE has increased significantly over the past 20 years. Concurrently, LMB growth and adult WAE densities have decreased. Although restrictive LMB harvest policies offer one plausible explanation for these trends, other factors such as increased voluntary release of LMB and pot ...
The Northern Lapwing (Vanellus vanellus) in Norway: Exploring the
... The ringing of Lapwings in Norway dates back to 1920, yet there have been very few (published) studies based on these data. Bakken, Runde & Tjørve (2003) gave an overview of the data in The Norwegian Bird Ringing Atlas, Vol. 1, and Lislevand, Byrkjedal & Grønstøl (2009) used it to look at dispersal ...
... The ringing of Lapwings in Norway dates back to 1920, yet there have been very few (published) studies based on these data. Bakken, Runde & Tjørve (2003) gave an overview of the data in The Norwegian Bird Ringing Atlas, Vol. 1, and Lislevand, Byrkjedal & Grønstøl (2009) used it to look at dispersal ...
Zebra reduce predation risk in mixed-species
... indicates that zebra perceive information gleaned from giraffe to be more valuable than that from wildebeest. In addition to altering vigilance time, the intensity of vigilance scans by zebra differed between herds with and without giraffe (F3,130 = 19.31, P < 0.0001). When herding alone, zebra ...
... indicates that zebra perceive information gleaned from giraffe to be more valuable than that from wildebeest. In addition to altering vigilance time, the intensity of vigilance scans by zebra differed between herds with and without giraffe (F3,130 = 19.31, P < 0.0001). When herding alone, zebra ...
Feeding strategies and resource partitioning of whitefish
... Interspecific competition for resources is, alongside abiotic factors like climate and geography, a very important factor in shaping communities. Since competition is difficult to prove directly, resource partitioning is frequently used as an indication of the presence of interspecific competition. ...
... Interspecific competition for resources is, alongside abiotic factors like climate and geography, a very important factor in shaping communities. Since competition is difficult to prove directly, resource partitioning is frequently used as an indication of the presence of interspecific competition. ...
Soil detritivore functioning in heterogeneously contaminated soils
... net plant productivity and parasitism infection increased in environments that ...
... net plant productivity and parasitism infection increased in environments that ...
Ecology and ecosystem impacts of common buckthorn (Rhamnus
... effects of mature R. cathartica shrubs on their seedlings. In North America, R. cathartica seedlings growing near mature conspecifics exhibited greater growth and survival than seedlings far from mature shrubs in similar light environments (Knight 2006). Unlike seedlings of four other species in an ...
... effects of mature R. cathartica shrubs on their seedlings. In North America, R. cathartica seedlings growing near mature conspecifics exhibited greater growth and survival than seedlings far from mature shrubs in similar light environments (Knight 2006). Unlike seedlings of four other species in an ...
Thresholds in Habitat Supply: A Review of the Literature
... Understanding how and when species respond to habitat change is relevant to sustaining viable populations in managed forest ecosystems. Because some ecosystem changes are irreversible, of particular interest is knowledge about non-linear or “threshold” change that may have rapid, drastic effects on ...
... Understanding how and when species respond to habitat change is relevant to sustaining viable populations in managed forest ecosystems. Because some ecosystem changes are irreversible, of particular interest is knowledge about non-linear or “threshold” change that may have rapid, drastic effects on ...
Kelp forest ecosystems - Cambridge University Press
... Chile (40–20° S latitude) are without fucoids (Bolton 1996). However, in Chile the large kelp-like Durvillaea sp. (closely related to the fucoids) commonly dominates shallow zones (Santelices 1990) and may outcompete Macrocystis there (Dayton 1985b). In general, the three interacting processes that ...
... Chile (40–20° S latitude) are without fucoids (Bolton 1996). However, in Chile the large kelp-like Durvillaea sp. (closely related to the fucoids) commonly dominates shallow zones (Santelices 1990) and may outcompete Macrocystis there (Dayton 1985b). In general, the three interacting processes that ...
Age at Capture - Ministry of Environment
... of the two summer home range polygons was greater than one average summer home range length. This proviso was included to reduce errors associated with underestimating home range size due to limited numbers of locations to delineate summer home range polygons for each animal. Additionally, the proba ...
... of the two summer home range polygons was greater than one average summer home range length. This proviso was included to reduce errors associated with underestimating home range size due to limited numbers of locations to delineate summer home range polygons for each animal. Additionally, the proba ...
Determining the relative importance of dilution and detection for
... from conspecifics as more reliable and thus maintain lower vigilance levels when herding in zebra-only herds. However, as herd size increases, we predicted that there would be a reduction in the difference in zebra vigilance between individuals in zebra-only and mixed-species herds such that their vi ...
... from conspecifics as more reliable and thus maintain lower vigilance levels when herding in zebra-only herds. However, as herd size increases, we predicted that there would be a reduction in the difference in zebra vigilance between individuals in zebra-only and mixed-species herds such that their vi ...
abstracts / oral presentations - Association for Tropical Biology and
... provides outlets for research dissemination, educational and funding opportunities, particularly for early career scientists working across the tropics. As a diverse community of science professionals, the ATBC provides a credible, collective, and authoritative vision of tropical biology and conse ...
... provides outlets for research dissemination, educational and funding opportunities, particularly for early career scientists working across the tropics. As a diverse community of science professionals, the ATBC provides a credible, collective, and authoritative vision of tropical biology and conse ...
Independent Study - incredible world
... Moose populations are not at risk in Canada. Moose population numbers mostly fluctuate in relation to food availability, disease, hunting pressure. Where predation and hunting are limited, moose numbers may increase to the point where food is inadequate. Under these conditions, many animals starve ...
... Moose populations are not at risk in Canada. Moose population numbers mostly fluctuate in relation to food availability, disease, hunting pressure. Where predation and hunting are limited, moose numbers may increase to the point where food is inadequate. Under these conditions, many animals starve ...
Kelp Forest Ecosystems - Digital Commons @ UMaine
... can be eliminated by thermal events, storms or outbreaks of herbivores and disappear without a trace within a year, but significantly, the entire community can return nearly as quickly (Scheibling 1984; Harrold & Reed 1985; Hart & Scheibling 1988; Witman 1988; Tegner et al. 1997). As with most ecosy ...
... can be eliminated by thermal events, storms or outbreaks of herbivores and disappear without a trace within a year, but significantly, the entire community can return nearly as quickly (Scheibling 1984; Harrold & Reed 1985; Hart & Scheibling 1988; Witman 1988; Tegner et al. 1997). As with most ecosy ...
Regeneration from injury and resource allocation in sponges and
... function for other species could be of value as a predictive tool: if the mean wound size can be used to predict the rate of physiological recovery of colonies, then the expected ecological pattern of recovery of multiple damaged species in a disturbed community (a pattern difficult to observe direc ...
... function for other species could be of value as a predictive tool: if the mean wound size can be used to predict the rate of physiological recovery of colonies, then the expected ecological pattern of recovery of multiple damaged species in a disturbed community (a pattern difficult to observe direc ...
Theoretical ecology
![](https://en.wikipedia.org/wiki/Special:FilePath/FoodWeb.jpg?width=300)
Theoretical ecology is the scientific discipline devoted to the study of ecological systems using theoretical methods such as simple conceptual models, mathematical models, computational simulations, and advanced data analysis. Effective models improve understanding of the natural world by revealing how the dynamics of species populations are often based on fundamental biological conditions and processes. Further, the field aims to unify a diverse range of empirical observations by assuming that common, mechanistic processes generate observable phenomena across species and ecological environments. Based on biologically realistic assumptions, theoretical ecologists are able to uncover novel, non-intuitive insights about natural processes. Theoretical results are often verified by empirical and observational studies, revealing the power of theoretical methods in both predicting and understanding the noisy, diverse biological world.The field is broad and includes foundations in applied mathematics, computer science, biology, statistical physics, genetics, chemistry, evolution, and conservation biology. Theoretical ecology aims to explain a diverse range of phenomena in the life sciences, such as population growth and dynamics, fisheries, competition, evolutionary theory, epidemiology, animal behavior and group dynamics, food webs, ecosystems, spatial ecology, and the effects of climate change.Theoretical ecology has further benefited from the advent of fast computing power, allowing the analysis and visualization of large-scale computational simulations of ecological phenomena. Importantly, these modern tools provide quantitative predictions about the effects of human induced environmental change on a diverse variety of ecological phenomena, such as: species invasions, climate change, the effect of fishing and hunting on food network stability, and the global carbon cycle.