Deep-Sea Hydrothermal Vent Communities C
... within these limits through processes that parallel those observed in coastal habitats, but sometimes in ways that challenge established ecological theory. Volcanic and tectonic activity can be frequent at vents, changing or destroying habitat and eliminating communities. This disturbance makes larv ...
... within these limits through processes that parallel those observed in coastal habitats, but sometimes in ways that challenge established ecological theory. Volcanic and tectonic activity can be frequent at vents, changing or destroying habitat and eliminating communities. This disturbance makes larv ...
McIntosh et al. 2004
... patchiness, possibly by allowing the influence of variation in physical characteristics (e.g., flow and substratum) to predominate or by changing grazer microhabitat use. These results support theoretical predictions that factors affecting primary consumer behavior also alter resource heterogeneity. ...
... patchiness, possibly by allowing the influence of variation in physical characteristics (e.g., flow and substratum) to predominate or by changing grazer microhabitat use. These results support theoretical predictions that factors affecting primary consumer behavior also alter resource heterogeneity. ...
Special Sessions Sponsored or Co
... Dendroecology, Dendroclimatology, North American Dendroecological Fieldweek Studies, Stable Isotopes and Dendrochemistry Contact - Jim Speer ([email protected]) Biogeography and Remote Sensing: Linking species, landscape and regional scales Contact: Jaclyn Hall ([email protected]) Insect outbrea ...
... Dendroecology, Dendroclimatology, North American Dendroecological Fieldweek Studies, Stable Isotopes and Dendrochemistry Contact - Jim Speer ([email protected]) Biogeography and Remote Sensing: Linking species, landscape and regional scales Contact: Jaclyn Hall ([email protected]) Insect outbrea ...
Brown-headed Cowbirds - American Birding Association
... when hosts were decreasing than when hosts were increasing. Another study (DeGroot et al. 1999) used a more direct approach and compared the makeup of bird communities at sites where cowbirds were being trapped and removed to protect Kirtland’s Warblers with data from sites 5–10 kilometers or more t ...
... when hosts were decreasing than when hosts were increasing. Another study (DeGroot et al. 1999) used a more direct approach and compared the makeup of bird communities at sites where cowbirds were being trapped and removed to protect Kirtland’s Warblers with data from sites 5–10 kilometers or more t ...
Freshwater Mussels Pacific Northwest
... conglutinates that quickly disintegrate and leave free glochidia to find a host on their own5. Females of some North American species have mantle margins that are modified to attract fish, with either bright colors or fleshy lobes that undulate to look like prey5,35,36,37. Using photoreceptive spots ...
... conglutinates that quickly disintegrate and leave free glochidia to find a host on their own5. Females of some North American species have mantle margins that are modified to attract fish, with either bright colors or fleshy lobes that undulate to look like prey5,35,36,37. Using photoreceptive spots ...
... Plateau and Mojave Desert regions. This same study also refuted the long-held assumption that olackbrush was a paleoendemic species, generally lacking in genetic variation (Stebbins 1972; Stebbins and Major 1965). The assumption was based primarily on the fact that the genus is monotypic with few cl ...
Plio-Pleistocene large carnivores from the Italian peninsula
... The evolutionary history of large carnivorous mammals through the Ice Age have been investigated for the Italian peninsula. No endemisms are recorded in the mainland of Italy and large carnivore species composition reflected the similar fauna of European continent. Morpho-ecological adaptation of ex ...
... The evolutionary history of large carnivorous mammals through the Ice Age have been investigated for the Italian peninsula. No endemisms are recorded in the mainland of Italy and large carnivore species composition reflected the similar fauna of European continent. Morpho-ecological adaptation of ex ...
The smell of success: choice of larval rearing sites
... Water of all tadpoles was taken and mixed for use in the field every other day and tadpoles were fed afterwards with flaked fish food (Tetra) ad libitum. Tadpoles were collected in phytotelmata at a nearby site and were mostly R. variabilis. Once captive tadpoles had reached Gosner developmental stage ...
... Water of all tadpoles was taken and mixed for use in the field every other day and tadpoles were fed afterwards with flaked fish food (Tetra) ad libitum. Tadpoles were collected in phytotelmata at a nearby site and were mostly R. variabilis. Once captive tadpoles had reached Gosner developmental stage ...
Otolith science entering the 21st century
... (Pagrus auratus) which grew up in the bay. Although this and other studies used stable isotope ratios as the population marker, the trace element composition of the otolith has more often been used in this type of study. For example, Brazner et al. (2004) observed distinct elemental fingerprints in ...
... (Pagrus auratus) which grew up in the bay. Although this and other studies used stable isotope ratios as the population marker, the trace element composition of the otolith has more often been used in this type of study. For example, Brazner et al. (2004) observed distinct elemental fingerprints in ...
Vocabulary Definitions
... population all the individuals of one kind (one species) in a specified area at one time (SRB, IG) population study an experiment in which the observer collects data over time for one population in an ecosystem (SRB, IG) predator an organism, usually an animal, that eats other organisms (SRB, IG) pr ...
... population all the individuals of one kind (one species) in a specified area at one time (SRB, IG) population study an experiment in which the observer collects data over time for one population in an ecosystem (SRB, IG) predator an organism, usually an animal, that eats other organisms (SRB, IG) pr ...
Risk Assessment
... The following general biological information on the snakehead family comes from the biological synopsis compiled by Courtney and Williams (2004). The body of snakeheads is torpedo-shaped, which tapers towards the tail. They have a single, long dorsal fin, a long anal fin, and a small head with a lar ...
... The following general biological information on the snakehead family comes from the biological synopsis compiled by Courtney and Williams (2004). The body of snakeheads is torpedo-shaped, which tapers towards the tail. They have a single, long dorsal fin, a long anal fin, and a small head with a lar ...
Habitat use and movements of plains zebra
... Zebra response to lion presence To test if zebra tended to abandon an area when lions arrive, we compared the numbers of zebras using a patch on a day when we observe lions in that patch to zebra abundance on days when we did not find lions in that patch. We defined a grassland patch as an area of t ...
... Zebra response to lion presence To test if zebra tended to abandon an area when lions arrive, we compared the numbers of zebras using a patch on a day when we observe lions in that patch to zebra abundance on days when we did not find lions in that patch. We defined a grassland patch as an area of t ...
significant natural areas timaru district
... and clearance. Most landowners are interested in the value of vegetation and habitat on their properties, intrigued to learn that it is regarded as important for the District, and proud if there are threatened or notable species present. These SNAs define the natural character of Timaru District. Th ...
... and clearance. Most landowners are interested in the value of vegetation and habitat on their properties, intrigued to learn that it is regarded as important for the District, and proud if there are threatened or notable species present. These SNAs define the natural character of Timaru District. Th ...
Wolves, elk, bison, and secondary trophic cascades in Yellowstone
... allowed bison numbers to increase through a reduction in inter-specific competition with elk, may represent an example of an alternative top-down pathway by which predators can influence multiple trophic levels through mediating the competitive interaction between two prey species. Both wolves and b ...
... allowed bison numbers to increase through a reduction in inter-specific competition with elk, may represent an example of an alternative top-down pathway by which predators can influence multiple trophic levels through mediating the competitive interaction between two prey species. Both wolves and b ...
Latitude, seed predation and seed mass
... The relationship between latitude and seed predation Both the generality of the above mechanism, and the wide range of taxa displaying latitudinal gradients in predation or herbivory, suggest that levels of seed predation might be higher towards the tropics. However, the only paper we are aware of t ...
... The relationship between latitude and seed predation Both the generality of the above mechanism, and the wide range of taxa displaying latitudinal gradients in predation or herbivory, suggest that levels of seed predation might be higher towards the tropics. However, the only paper we are aware of t ...
Lemmings EN
... Another obvious candidate is the interaction between lemmings and their food supply. As lemming numbers increase so does damage to the vegetation. Ultimately, the food supply is no longer able to sustain the population. Following a massive die-off of lemmings, the vegetation is able to recover, whic ...
... Another obvious candidate is the interaction between lemmings and their food supply. As lemming numbers increase so does damage to the vegetation. Ultimately, the food supply is no longer able to sustain the population. Following a massive die-off of lemmings, the vegetation is able to recover, whic ...
1 Course: Zoology Online Resources used in Correlations These
... SC.H.2.4.2 know that scientists control conditions in order to obtain evidence, but when that is not possible for practical or ethical reasons, they try to observe a wide range of natural occurrences to discern patterns. ...
... SC.H.2.4.2 know that scientists control conditions in order to obtain evidence, but when that is not possible for practical or ethical reasons, they try to observe a wide range of natural occurrences to discern patterns. ...
HERBIVORE OFFENSE Richard Karban Anurag A. Agrawal
... compensatory feeding among insect herbivores occurs as the result of nutritional feedback; herbivores respond to the osmolality and amino acid content of their hemolymph. Herbivores may also assess the bulk of digested food and its rate of passage through their guts and adjust their decisions about ...
... compensatory feeding among insect herbivores occurs as the result of nutritional feedback; herbivores respond to the osmolality and amino acid content of their hemolymph. Herbivores may also assess the bulk of digested food and its rate of passage through their guts and adjust their decisions about ...
The role of biotic factors in the transmission of free
... way to their down-stream hosts, but are instead surrounded by complex communities of ambient organisms. These organisms may alter the transmission process through a variety of species interactions, for example via predation on the free-living stages. We surveyed the available literature for studies ...
... way to their down-stream hosts, but are instead surrounded by complex communities of ambient organisms. These organisms may alter the transmission process through a variety of species interactions, for example via predation on the free-living stages. We surveyed the available literature for studies ...
the reciprocal interaction of angiosperm evolution and tetrapod
... We infer the following evolutionary effects of angiosperms and tetrapods on each other. During Stage 1 generalized herbivory/disturbance by dinosaurs favored angiosperms that remained relatively small and r-selected. Increasing abundance and geographic spread of these r-selected angiosperms fueled t ...
... We infer the following evolutionary effects of angiosperms and tetrapods on each other. During Stage 1 generalized herbivory/disturbance by dinosaurs favored angiosperms that remained relatively small and r-selected. Increasing abundance and geographic spread of these r-selected angiosperms fueled t ...
Diss für PDF - Deutsche Digitale Bibliothek
... broadly tolerant distribution, others require a very specific hydrographic regime. If this hydrographic regime is found in several places around the globe, the species will be found in many or all of them. As the three major oceans show very different habitat characteristics, they share some, but no ...
... broadly tolerant distribution, others require a very specific hydrographic regime. If this hydrographic regime is found in several places around the globe, the species will be found in many or all of them. As the three major oceans show very different habitat characteristics, they share some, but no ...
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.