Estuary Chpt. 1 - Overview of the Kennebec Estuary
... since the nadir of the estuary’s health were dramatic and rapid once corrective measures were implemented, but mounting evidence indicates that the consequences of historical and contemporary alterations of this system continue to hinder recovery. This project was designed to explore restoration opp ...
... since the nadir of the estuary’s health were dramatic and rapid once corrective measures were implemented, but mounting evidence indicates that the consequences of historical and contemporary alterations of this system continue to hinder recovery. This project was designed to explore restoration opp ...
- Smithsonian Tropical Research Institute
... manuscript) when crabs release larvae from entrances of inundated refuges than when they walk to the water's edge. Furthermore, by hatching on high tides, larvae of all species may avoid planktivorous fishes because ensuing ebb tides transport larvae from shorelines, where planktivorous fishes aboun ...
... manuscript) when crabs release larvae from entrances of inundated refuges than when they walk to the water's edge. Furthermore, by hatching on high tides, larvae of all species may avoid planktivorous fishes because ensuing ebb tides transport larvae from shorelines, where planktivorous fishes aboun ...
Ingredients for protist coexistence: competition, endosymbiosis and
... hundreds of cells of the green algae Chlorella vulgaris and may benefit from carbohydrates synthesised by its endosymbiont presumably in exchange of protection (Karakashian 1963; Pado 1965; Weis 1969). Although the interaction between P. bursaria and C. vulgaris looks mutualistic, it has been suggest ...
... hundreds of cells of the green algae Chlorella vulgaris and may benefit from carbohydrates synthesised by its endosymbiont presumably in exchange of protection (Karakashian 1963; Pado 1965; Weis 1969). Although the interaction between P. bursaria and C. vulgaris looks mutualistic, it has been suggest ...
Changes in selection on gastropod shell size and thickness with
... To predict shell weight as a function of shell width we estimated linear regression equations for each species using the log-transformed data. Shell width was used to define size instead of shell length because it is more comparable among Littorina species with different shapes. Littorina subrotunda ...
... To predict shell weight as a function of shell width we estimated linear regression equations for each species using the log-transformed data. Shell width was used to define size instead of shell length because it is more comparable among Littorina species with different shapes. Littorina subrotunda ...
California native and exotic perennial grasses differ
... Early emergence of plant seedlings can offer strong competitive advantages over later-germinating neighbors through the preemption of limiting resources. This phenomenon may have contributed to the persistent dominance of European annual grasses over native perennial grasses in California grasslands ...
... Early emergence of plant seedlings can offer strong competitive advantages over later-germinating neighbors through the preemption of limiting resources. This phenomenon may have contributed to the persistent dominance of European annual grasses over native perennial grasses in California grasslands ...
BEHAVIORAL INTERACTIONS BETWEEN PARASITES AND
... the parasitoid. An infected individual may behave in such a manner as to become more conspicuous to predators or easier to capture. As a result the host may be killed before the parasitoid is able to mature. The host's kin are now protected against infection by this particular parasitoid individual. ...
... the parasitoid. An infected individual may behave in such a manner as to become more conspicuous to predators or easier to capture. As a result the host may be killed before the parasitoid is able to mature. The host's kin are now protected against infection by this particular parasitoid individual. ...
BEHAVIORAL INTERACTIONS BETWEEN PARASITES AND HOSTS
... the parasitoid. An infected individual may behave in such a manner as to become more conspicuous to predators or easier to capture. As a result the host may be killed before the parasitoid is able to mature. The host's kin are now protected against infection by this particular parasitoid individual. ...
... the parasitoid. An infected individual may behave in such a manner as to become more conspicuous to predators or easier to capture. As a result the host may be killed before the parasitoid is able to mature. The host's kin are now protected against infection by this particular parasitoid individual. ...
Grassland Ecology - Kansas State University
... and climate change. This is due, in part, to the relative ease of performing manipulative experiments in grasslands, the sensitivity of grasslands to perturbations, and the relatively rapid responses they often exhibit to these manipulations. In fact one of the longest running field experiments in t ...
... and climate change. This is due, in part, to the relative ease of performing manipulative experiments in grasslands, the sensitivity of grasslands to perturbations, and the relatively rapid responses they often exhibit to these manipulations. In fact one of the longest running field experiments in t ...
Importance of salmon to wildlife: Implications
... resource.The literatureis fraughtwith examples of one animal defending, stealing, or sharing a nutritional resourcewith otheranimals,andexamplesof interactions surrounding salmon are included in this body of behavioral observations (e.g. Stalmasterand Gessman 1984). However, this type of interaction ...
... resource.The literatureis fraughtwith examples of one animal defending, stealing, or sharing a nutritional resourcewith otheranimals,andexamplesof interactions surrounding salmon are included in this body of behavioral observations (e.g. Stalmasterand Gessman 1984). However, this type of interaction ...
Western Chorus Frog (Pseudacris triseriata)
... Pseudacris triseriata generally live no more than 1 year and usually breed in the first spring after metamorphosis. The breeding season is from early-March to mid-May. It takes approximately 2 months for tadpoles to change into froglets, which grow very quickly and are mature at the end of the summe ...
... Pseudacris triseriata generally live no more than 1 year and usually breed in the first spring after metamorphosis. The breeding season is from early-March to mid-May. It takes approximately 2 months for tadpoles to change into froglets, which grow very quickly and are mature at the end of the summe ...
Poster Presentations (, ~1 MB in size)
... weakly electric fishes, including African mormyrids, these responses are accompanied by transient increases in electrical signal production known as novelty responses. While these novelty responses may heighten an individual's perception of their surroundings, they are aerobically powered and may co ...
... weakly electric fishes, including African mormyrids, these responses are accompanied by transient increases in electrical signal production known as novelty responses. While these novelty responses may heighten an individual's perception of their surroundings, they are aerobically powered and may co ...
Recovery strategy for the American Badger
... the American Badger to endangered. In 2004, T. t. jacksoni was added to the Species at Risk in Ontario List as endangered – not regulated. When this list was regulated in 2008, the subspecies was removed from the species name. Little research or monitoring has been conducted on the Ontario populatio ...
... the American Badger to endangered. In 2004, T. t. jacksoni was added to the Species at Risk in Ontario List as endangered – not regulated. When this list was regulated in 2008, the subspecies was removed from the species name. Little research or monitoring has been conducted on the Ontario populatio ...
The importance of predation, cannibalism and resources for
... ability to act as herbivores, detritivores and predators. This polytrohic behaviour is rather unique in freshwater ecosystems. Several studies have shown that crayfish can have strong impacts on other benthic organisms through direct and indirect effects. Crayfish can for example totally exclude som ...
... ability to act as herbivores, detritivores and predators. This polytrohic behaviour is rather unique in freshwater ecosystems. Several studies have shown that crayfish can have strong impacts on other benthic organisms through direct and indirect effects. Crayfish can for example totally exclude som ...
Cane Toad
... • US and British Virgin Islands – Cane Toads were introduced to St Croix in 1934, where within 2 years they had spread 6.4 km from their release site, and were described as ‘well dispersed’. Toads on St Thomas had probably been introduced in the early or mid-1940s. Cane Toads also reportedly occur o ...
... • US and British Virgin Islands – Cane Toads were introduced to St Croix in 1934, where within 2 years they had spread 6.4 km from their release site, and were described as ‘well dispersed’. Toads on St Thomas had probably been introduced in the early or mid-1940s. Cane Toads also reportedly occur o ...
Ecological flexibility in a disturbed landscape
... introduced or anthropogenic resources and the population density (1.13 lemurs/ha) is onesixth that at Anja. During the late dry season of 2010 and mid- to late-wet season of 2011, I collected continuous time focal animal data to examine behavioural patterns related to habitat use (ranging, matrix us ...
... introduced or anthropogenic resources and the population density (1.13 lemurs/ha) is onesixth that at Anja. During the late dry season of 2010 and mid- to late-wet season of 2011, I collected continuous time focal animal data to examine behavioural patterns related to habitat use (ranging, matrix us ...
Biology Objective 3
... the process of change over time • There are natural variations in all populations. • As climate changes occur, and as pressures in terms of food, space, shelter and predation occur, some variations allow a species to survive; others do not. • Some members who survive, reproduce causing the beneficia ...
... the process of change over time • There are natural variations in all populations. • As climate changes occur, and as pressures in terms of food, space, shelter and predation occur, some variations allow a species to survive; others do not. • Some members who survive, reproduce causing the beneficia ...
Kearney2011 - Association of Field Ornithologists
... passing through Nebraska since the 1990s has usually been estimated to range from 450,000–500,000.The population in the 1960s was probably under 200,000, but irrigation, fertilization and associated increases in corn production have provided a spring feast for both cranes and geese. Relatively few G ...
... passing through Nebraska since the 1990s has usually been estimated to range from 450,000–500,000.The population in the 1960s was probably under 200,000, but irrigation, fertilization and associated increases in corn production have provided a spring feast for both cranes and geese. Relatively few G ...
Invertebrates outcompete vertebrate facultative scavengers
... servation of natural processes, including the promotion of undisturbed dynamics within natural communities. This includes the avoidance of control measures for the wild ungulate population through human intervention. Therefore forest and wildlife management is not allowed in 75% of the area (Heurich ...
... servation of natural processes, including the promotion of undisturbed dynamics within natural communities. This includes the avoidance of control measures for the wild ungulate population through human intervention. Therefore forest and wildlife management is not allowed in 75% of the area (Heurich ...
Curriculum Vitae - FCUL - Universidade de Lisboa
... Plant-herbivore interactions. Eco-evolutionary dynamics. Biological control. ...
... Plant-herbivore interactions. Eco-evolutionary dynamics. Biological control. ...
18_Lectures_PPT
... – Is concerned with ecosystems, which include all the abiotic factors in addition to the community of species in a certain area. – Focuses on energy flow and the cycling of chemicals among the various abiotic and biotic factors. ...
... – Is concerned with ecosystems, which include all the abiotic factors in addition to the community of species in a certain area. – Focuses on energy flow and the cycling of chemicals among the various abiotic and biotic factors. ...
Population Growth Models
... – Is concerned with ecosystems, which include all the abiotic factors in addition to the community of species in a certain area. – Focuses on energy flow and the cycling of chemicals among the various abiotic and biotic factors. ...
... – Is concerned with ecosystems, which include all the abiotic factors in addition to the community of species in a certain area. – Focuses on energy flow and the cycling of chemicals among the various abiotic and biotic factors. ...
Feeding of detritivores in freshwater sediments
... different feeding modes and different food sources. Significant differences between species was only found for the degradation of polysaccharides. All "– and ß –glucosides and galactosides were degraded by all tested species. Marked species differences existed in the degradation of pectin, xylan and ...
... different feeding modes and different food sources. Significant differences between species was only found for the degradation of polysaccharides. All "– and ß –glucosides and galactosides were degraded by all tested species. Marked species differences existed in the degradation of pectin, xylan and ...
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.