DYNAMICS OF DRUPELLA CORNUS POPULATIONS ON KENYAN
... communication). Consequently, from existing studies and data, D. cornus has been a very successful snail during the last 3 decades and, although originally widespread (Abbott and Dance 1986), outbreak population may be spreading or arising at similar times throughout the central and western Indo-Pac ...
... communication). Consequently, from existing studies and data, D. cornus has been a very successful snail during the last 3 decades and, although originally widespread (Abbott and Dance 1986), outbreak population may be spreading or arising at similar times throughout the central and western Indo-Pac ...
Mrs. Krausz`s Environmental Science: Chapter 5 Study Guide
... mountain meadow, grasshoppers and aphids eat the flowers and grasses. Ladybugs eat the aphids, and blue jays eat the grasshoppers and ladybugs. Blue jays also eat grass seeds and pine nuts and even an occasional small frog from the pond. The frogs ate algae in the pond when they were tadpoles, but n ...
... mountain meadow, grasshoppers and aphids eat the flowers and grasses. Ladybugs eat the aphids, and blue jays eat the grasshoppers and ladybugs. Blue jays also eat grass seeds and pine nuts and even an occasional small frog from the pond. The frogs ate algae in the pond when they were tadpoles, but n ...
Production of tropical larvaceans in Kingston Harbour, Jamaica: are
... use of the appropriate growth rate becomes important. The larvaceans represent an extreme example of discrepancies between values of g and G; our average g = 2.49 for the Oikopleuridae is equivalent to G = 11.1, an ~4 fold difference in magnitude. While we often observe larvacean production in micro ...
... use of the appropriate growth rate becomes important. The larvaceans represent an extreme example of discrepancies between values of g and G; our average g = 2.49 for the Oikopleuridae is equivalent to G = 11.1, an ~4 fold difference in magnitude. While we often observe larvacean production in micro ...
Shifts in phenology due to global climate change: the need for a
... It is, however, unclear how we should interpret these shifts without some sort of a yardstick: a measure that will reflect how much a species should be shifting to match the change in its environment caused by climate change. Here, we assume that the shift in the phenology of a species’ food abundan ...
... It is, however, unclear how we should interpret these shifts without some sort of a yardstick: a measure that will reflect how much a species should be shifting to match the change in its environment caused by climate change. Here, we assume that the shift in the phenology of a species’ food abundan ...
QUESTION: Review
... entities - Its members remain associated over space and time - The community shared similar limiting factors and evolutionary histories • Henry Gleason = maintained that each species responds independently to its own limiting factors - Species can join or leave communities without greatly altering t ...
... entities - Its members remain associated over space and time - The community shared similar limiting factors and evolutionary histories • Henry Gleason = maintained that each species responds independently to its own limiting factors - Species can join or leave communities without greatly altering t ...
Risk of brood parasitism and predation in relation to human
... Jahangirnagar University campus outside Dhaka in Bangladesh. A total of five cuckoo species was recorded in the study area which parasitized six passerine species nests. This study is the first to confirm that plaintive cuckoos use common tailorbirds as hosts in Bangladesh. Two hypotheses were teste ...
... Jahangirnagar University campus outside Dhaka in Bangladesh. A total of five cuckoo species was recorded in the study area which parasitized six passerine species nests. This study is the first to confirm that plaintive cuckoos use common tailorbirds as hosts in Bangladesh. Two hypotheses were teste ...
APES Unit #3- Presentation
... entities - Its members remain associated over space and time - The community shared similar limiting factors and evolutionary histories • Henry Gleason = maintained that each species responds independently to its own limiting factors - Species can join or leave communities without greatly altering t ...
... entities - Its members remain associated over space and time - The community shared similar limiting factors and evolutionary histories • Henry Gleason = maintained that each species responds independently to its own limiting factors - Species can join or leave communities without greatly altering t ...
Exploring indirect effects of biological invasions on native ecosystems
... advantages that make invasive species superior competitors, such as release from natural enemies that had co-evolved in their native habitats. Further success can come from indirect ecosystem effects, such as the development of new mutualisms with other native organisms that improve survival of the ...
... advantages that make invasive species superior competitors, such as release from natural enemies that had co-evolved in their native habitats. Further success can come from indirect ecosystem effects, such as the development of new mutualisms with other native organisms that improve survival of the ...
Biology
... diversity of life. Examined are the chemical nature of life, genetics, evolution, population and community dynamics, and ecological diversity. Lecture and laboratory. May be used to satisfy a distribution requirement in natural sciences. 1024 General Biology II A continuation of General Biology I wi ...
... diversity of life. Examined are the chemical nature of life, genetics, evolution, population and community dynamics, and ecological diversity. Lecture and laboratory. May be used to satisfy a distribution requirement in natural sciences. 1024 General Biology II A continuation of General Biology I wi ...
Chapter 7 The Diet of the Powerful Owl - DRO
... The powerful owl is increasingly being detected in urban and urban fringe environments (e.g. Pavey 1993; Webster et al. 1999b; Cooke et al. 2002a, Kavanagh 2004; Cooke and Wallis 2004), yet relatively few studies have been conducted on these urban owls. The question then rises as to why a species th ...
... The powerful owl is increasingly being detected in urban and urban fringe environments (e.g. Pavey 1993; Webster et al. 1999b; Cooke et al. 2002a, Kavanagh 2004; Cooke and Wallis 2004), yet relatively few studies have been conducted on these urban owls. The question then rises as to why a species th ...
ANTI-PREDATOR TRAINING: AN EXPERIMENTAL APPROACH IN REINTRODUCTION BIOLOGY
... 1976; Morse 1980). Individuals that are especially vulnerable are the young, weak, sick, aged, injured and inexperienced. For example, Temple (1987) studied the predator-prey relationships between the red-tailed hawk (Buteo jamaicensis) and three of its prey. He found that substandard prey were not ...
... 1976; Morse 1980). Individuals that are especially vulnerable are the young, weak, sick, aged, injured and inexperienced. For example, Temple (1987) studied the predator-prey relationships between the red-tailed hawk (Buteo jamaicensis) and three of its prey. He found that substandard prey were not ...
Potential Impacts of a Western Pacific Grapsid Crab on Intertidal
... Population density and size distribution, salinity tolerance, and feeding activity were examined in a western Pacific grapsid crab, Hemigrapsus sanguineus, that was recently introduced to the mid-Atlantic coast of North America. Seasonal abundance on a boulder/cobble shore (Crane Neck Pt.) in centra ...
... Population density and size distribution, salinity tolerance, and feeding activity were examined in a western Pacific grapsid crab, Hemigrapsus sanguineus, that was recently introduced to the mid-Atlantic coast of North America. Seasonal abundance on a boulder/cobble shore (Crane Neck Pt.) in centra ...
Global patterns in the impact of marine herbivores on benthic
... have demonstrated important roles of marine herbivores, fewer have contrasted different groups of grazers (e.g. Carpenter 1986), compared habitats, or were conducted on the scales needed to test theories of large-scale gradients in the strength of herbivory (see Pennings & Silliman 2005 for an excep ...
... have demonstrated important roles of marine herbivores, fewer have contrasted different groups of grazers (e.g. Carpenter 1986), compared habitats, or were conducted on the scales needed to test theories of large-scale gradients in the strength of herbivory (see Pennings & Silliman 2005 for an excep ...
WASTE STABILIZATION PONDS AND CONSTRUCTED WETLANDS
... Recognition is extended to the following individuals who provided assistance on the compilation of WSP and CW module incorporated in this manual: Richard Kimwaga - University of Dar es Salaam, Prospective College of Engineering and Technology, WSP & CW Research Project: Model on total suspended soli ...
... Recognition is extended to the following individuals who provided assistance on the compilation of WSP and CW module incorporated in this manual: Richard Kimwaga - University of Dar es Salaam, Prospective College of Engineering and Technology, WSP & CW Research Project: Model on total suspended soli ...
Genetic consequences of ecological reserve design guidelines: An
... to understanding how many populations are required to represent within-species genetic diversity when diversity patterns are unknown. This approach is in contrast to maximizing genetic diversity when patterns of within and among populations variation are known (e.g., Namkoong 1993; Ceska et al. 1997 ...
... to understanding how many populations are required to represent within-species genetic diversity when diversity patterns are unknown. This approach is in contrast to maximizing genetic diversity when patterns of within and among populations variation are known (e.g., Namkoong 1993; Ceska et al. 1997 ...
Coyotes, deer, and wildflowers: diverse evidence points to a trophic
... Louis, MO, USA) at each of two locations near the townsite (there was no other feeding of deer during our study). Observations near dawn and dusk at a feed block began 2 days after deer discovered it. Thereafter, blocks were covered and unavailable to deer except during observations. At the start of ...
... Louis, MO, USA) at each of two locations near the townsite (there was no other feeding of deer during our study). Observations near dawn and dusk at a feed block began 2 days after deer discovered it. Thereafter, blocks were covered and unavailable to deer except during observations. At the start of ...
Effects of urbanization on Song Sparrow (Melospiza melodia
... habitat within the range of common dispersal distances facilitates stepping-stone gene flow over multiple generations, so reduced habitat availability could result in less population connectivity despite birds’ high mobility. Movement of birds among populations is difficult to monitor directly, but ...
... habitat within the range of common dispersal distances facilitates stepping-stone gene flow over multiple generations, so reduced habitat availability could result in less population connectivity despite birds’ high mobility. Movement of birds among populations is difficult to monitor directly, but ...
The tragedy of our legacy
... Paper submitted to Forum for Development Studies http://www.tandf.co.uk/journals/sfds Abstract: Modern fisheries management discourse is supported by two fundamental narratives that have global impacts. One is the fear of open access regimes, and the other is the condemnation of catching under-sized ...
... Paper submitted to Forum for Development Studies http://www.tandf.co.uk/journals/sfds Abstract: Modern fisheries management discourse is supported by two fundamental narratives that have global impacts. One is the fear of open access regimes, and the other is the condemnation of catching under-sized ...
Ecological observations on the Indian Spiny
... three time intervals were noted for a time class. Since observations were repeated three times within a time ...
... three time intervals were noted for a time class. Since observations were repeated three times within a time ...
Visual Mimicry
... • A quick decision may allow imperfect mimics enough time to escape • Categorization of prey – Very different prey share common character(s) – Different predators may form different categories ...
... • A quick decision may allow imperfect mimics enough time to escape • Categorization of prey – Very different prey share common character(s) – Different predators may form different categories ...
Goliath grouper issues in Florida: fact or fiction. Christopher C
... the number of snapper (all species combined) and the number of goliath groupers present on surveyed sites; that is, the higher the number of goliath grouper occupying a reef, the higher the number of snappers on that reef (Figure 2). We found no significant relationship between the number of adult g ...
... the number of snapper (all species combined) and the number of goliath groupers present on surveyed sites; that is, the higher the number of goliath grouper occupying a reef, the higher the number of snappers on that reef (Figure 2). We found no significant relationship between the number of adult g ...
(k(:i)logia Patterns of variation in life history among
... conspecificdemesthat have experienceddifferent environmental conditions for long time periods. The presentstudy constitutes one such test. characteriDng patterns of reproduction in tropical fishes with a seriesof dependentvariables.The degreeof speciesclustering in multivariate space indicates the l ...
... conspecificdemesthat have experienceddifferent environmental conditions for long time periods. The presentstudy constitutes one such test. characteriDng patterns of reproduction in tropical fishes with a seriesof dependentvariables.The degreeof speciesclustering in multivariate space indicates the l ...
the Study of Mutualistic Benefits To Plants In Myrmecochory
... by temporal limitations, and by limitations of sources of mortality that have typically been investigated. Furthermore, from the plant perspective, many key parts as well as inconsistencies within this more complex process have not been well explored. Here, I provide a more realistic guiding framewo ...
... by temporal limitations, and by limitations of sources of mortality that have typically been investigated. Furthermore, from the plant perspective, many key parts as well as inconsistencies within this more complex process have not been well explored. Here, I provide a more realistic guiding framewo ...
Theoretical ecology
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.