Flatworms (Schmidtea nova) prey upon embryos of the common frog
... We used R software (R Core Team, 2014) and lme4 package (Bates et al., 2014) to perform a mixed effects model analysis of the effect of planaria presence on embryo development, the response variable. We considered treatment as a fixed effect with three levels (NP, CP, and FP) and to account for inte ...
... We used R software (R Core Team, 2014) and lme4 package (Bates et al., 2014) to perform a mixed effects model analysis of the effect of planaria presence on embryo development, the response variable. We considered treatment as a fixed effect with three levels (NP, CP, and FP) and to account for inte ...
Name Date: Per.: Score: ECOLOGY UNIT 6 Blended Learning Guide
... Counts only for points for online assignments. Use complete sentences and vocabulary words to answer the following questions from the textbook: page 430, #1-4 Go to classzone.com >Assessment and take section quiz for practice. Logon to www.quia.com and take the quiz for section 14.1; this counts a ...
... Counts only for points for online assignments. Use complete sentences and vocabulary words to answer the following questions from the textbook: page 430, #1-4 Go to classzone.com >Assessment and take section quiz for practice. Logon to www.quia.com and take the quiz for section 14.1; this counts a ...
Crassostrea gigas - Pacific oyster UK NON
... 2.15 How likely is it that genetic traits can be carried to native species, modifying their genetic nature and making their economic, environmental or social effects more serious? 2.16 How probable is it that natural enemies, already present in the Risk Assessment area, will have no affect on popula ...
... 2.15 How likely is it that genetic traits can be carried to native species, modifying their genetic nature and making their economic, environmental or social effects more serious? 2.16 How probable is it that natural enemies, already present in the Risk Assessment area, will have no affect on popula ...
Is invasion success explained by the enemy release hypothesis?
... We searched the ecological literature published over the past 10 years and found 25 studies that tested various aspects of the ERH, over half of which (60%) generally supported ERH predictions (Table 1). These studies could be divided into two categories based on the scale of analysis; ‘biogeographi ...
... We searched the ecological literature published over the past 10 years and found 25 studies that tested various aspects of the ERH, over half of which (60%) generally supported ERH predictions (Table 1). These studies could be divided into two categories based on the scale of analysis; ‘biogeographi ...
Quantifying the effects of biodiversity on food web structure: a stable
... Food web structure is of underlying importance to ecological functions and processes. Whilst it is understood that a range of biotic and abiotic factors affect structure, relatively little is known of the role of biodiversity per se in structuring food webs. In this thesis I utilise novel multi-dime ...
... Food web structure is of underlying importance to ecological functions and processes. Whilst it is understood that a range of biotic and abiotic factors affect structure, relatively little is known of the role of biodiversity per se in structuring food webs. In this thesis I utilise novel multi-dime ...
From tameness to wariness: chemical recognition of snake
... We recorded 16 behavioural variables: (1) ‘Walk latency’: time until the first ‘walk’ movement, (2) ‘Walk’: lizards walk normally, as moving in the wild, (3) ‘Change among sectors’: lizards move between the six predefined sectors of the experimental terrarium, (4) ‘Slow’: lizards walk slowly and wit ...
... We recorded 16 behavioural variables: (1) ‘Walk latency’: time until the first ‘walk’ movement, (2) ‘Walk’: lizards walk normally, as moving in the wild, (3) ‘Change among sectors’: lizards move between the six predefined sectors of the experimental terrarium, (4) ‘Slow’: lizards walk slowly and wit ...
Collection of Bait Organisms in Estuaries
... periods’ and provided reasons for its absence from these systems. More recent focus on the larval life history strategies has now shown that mud prawn larvae require an obligatory marine phase of development. First-stage larvae migrate from the estuary in highest numbers on the crepuscular ebb tide. ...
... periods’ and provided reasons for its absence from these systems. More recent focus on the larval life history strategies has now shown that mud prawn larvae require an obligatory marine phase of development. First-stage larvae migrate from the estuary in highest numbers on the crepuscular ebb tide. ...
Significance of Plankton Community Structure and Nutrient
... multiflagellated structure (the vermiforme), which fragments within a few hours, releasing hundreds of dinospores, each potentially capable of infecting a novel host [11, 12]. This simple life-cycle, combined with a short generation time, make Amoebophrya spp. excellent models for studying host-para ...
... multiflagellated structure (the vermiforme), which fragments within a few hours, releasing hundreds of dinospores, each potentially capable of infecting a novel host [11, 12]. This simple life-cycle, combined with a short generation time, make Amoebophrya spp. excellent models for studying host-para ...
independent gradients of producer, consumer
... polyacrylamide with a denaturant gradient ranging from 20% to 55% (100% denaturant being 7 mol/L urea and 40% deionized formamide). Electrophoresis was run at a constant voltage of 200 V for three hours at 608C in a buffer of 13 Tris-Acetate-EDTA (TAE). After electrophoresis, the gels were stained w ...
... polyacrylamide with a denaturant gradient ranging from 20% to 55% (100% denaturant being 7 mol/L urea and 40% deionized formamide). Electrophoresis was run at a constant voltage of 200 V for three hours at 608C in a buffer of 13 Tris-Acetate-EDTA (TAE). After electrophoresis, the gels were stained w ...
UNIVERSITY OF CALGARY Direct, indirect and predator
... response to wolf presence. Cattle (Bos taurus) selected roads (likely to seek human protection) and low-food-quality habitat, but only after wolves left pastures, indicating poor anti-predator behaviour. Despite presence of the top-down effects described above, path analysis indicated that humans in ...
... response to wolf presence. Cattle (Bos taurus) selected roads (likely to seek human protection) and low-food-quality habitat, but only after wolves left pastures, indicating poor anti-predator behaviour. Despite presence of the top-down effects described above, path analysis indicated that humans in ...
Literature Review Ahlam Salih Eltahir and Bouran Ibrahim
... Cutler Cleveland (2012) “Mangrove Ecology” This paper focuses on the study of biotic interactions with mangrove swamp ecosystems. This study also states the classification of mangroves on the basis of tidal zones. Mangrove distribution and physical description has been exclusively mentioned. The var ...
... Cutler Cleveland (2012) “Mangrove Ecology” This paper focuses on the study of biotic interactions with mangrove swamp ecosystems. This study also states the classification of mangroves on the basis of tidal zones. Mangrove distribution and physical description has been exclusively mentioned. The var ...
Hibernation and daily torpor minimize mammalian extinctions
... Boyer BB, Barnes BM (1999) Molecular and metabolic aspects of ...
... Boyer BB, Barnes BM (1999) Molecular and metabolic aspects of ...
Mycorrhizal fungal establishment in agricultural soils: factors
... Increasingly, inoculation of soils with beneficial soil biota is being considered as a tool to enhance plant productivity and sustainability of agricultural ecosystems. However, one important bottleneck is the establishment of viable microbial populations that can persist over multiple seasons. Here ...
... Increasingly, inoculation of soils with beneficial soil biota is being considered as a tool to enhance plant productivity and sustainability of agricultural ecosystems. However, one important bottleneck is the establishment of viable microbial populations that can persist over multiple seasons. Here ...
Marine Ecology
... influx, we will set up two treatments for each of four native Gulf coast phytoplankton species, including K. brevis. The first treatment of each species will serve as a control where the water sample is exclusively characteristic of Gulf coast waters prior to dust storm events. For the second treatm ...
... influx, we will set up two treatments for each of four native Gulf coast phytoplankton species, including K. brevis. The first treatment of each species will serve as a control where the water sample is exclusively characteristic of Gulf coast waters prior to dust storm events. For the second treatm ...
The interaction between habitat conditions, ecosystem
... function has been central to community ecology for many decades. Mathematical models have produced inconclusive results showing that more diverse ecosystems can be either more or less stable than simpler ecosystems, depending on the ecosystem under investigation. The relationship between habitat com ...
... function has been central to community ecology for many decades. Mathematical models have produced inconclusive results showing that more diverse ecosystems can be either more or less stable than simpler ecosystems, depending on the ecosystem under investigation. The relationship between habitat com ...
Rethinking patch size and isolation effects: the habitat amount
... Is the species–area curve across habitat patches steeper (like the curve for islands) or shallower (like the curve for sample areas within continuous habitat)? If the latter, we can hypothesize that the species–area curve for habitat patches primarily results from the sample area effect, where large ...
... Is the species–area curve across habitat patches steeper (like the curve for islands) or shallower (like the curve for sample areas within continuous habitat)? If the latter, we can hypothesize that the species–area curve for habitat patches primarily results from the sample area effect, where large ...
Instructions for the Preparation of COSEWIC Status
... credible sources, including personal communications with knowledgeable local people and other experts. The report writer’s own professional inferences are welcome. For updates on status reports, former report writers who may have new information on the wildlife species should be contacted and cited. ...
... credible sources, including personal communications with knowledgeable local people and other experts. The report writer’s own professional inferences are welcome. For updates on status reports, former report writers who may have new information on the wildlife species should be contacted and cited. ...
History and restoration of the longleaf pine-grassland
... Americans sustained open diverse stands in a fire climax and prevented succession to mixed hardwood forests. Disruption of prehistorical and historical fire regimes, coupled with land conversion, urbanization, and other factors, is responsible for the rapid decline of the ecosystem. Today only about ...
... Americans sustained open diverse stands in a fire climax and prevented succession to mixed hardwood forests. Disruption of prehistorical and historical fire regimes, coupled with land conversion, urbanization, and other factors, is responsible for the rapid decline of the ecosystem. Today only about ...
Guha Dharmarajan PhD: Population genetics (Department of
... Dharmarajan G, Dieter K and Lehmann T (In Prep.) Are mosquitoes in disease “hot-spots” more efficient vectors? Insights on spatial variation in disease resistance and tolerance in a natural vector-parasite system. Beasley JC, Olson ZH, Dharmarajan G, Eagan TS and Rhodes OE Jr. (In Prep.) Source-sink ...
... Dharmarajan G, Dieter K and Lehmann T (In Prep.) Are mosquitoes in disease “hot-spots” more efficient vectors? Insights on spatial variation in disease resistance and tolerance in a natural vector-parasite system. Beasley JC, Olson ZH, Dharmarajan G, Eagan TS and Rhodes OE Jr. (In Prep.) Source-sink ...
modulam a ecologia da predação de um
... BELLEGGIA, M. et al. Spatio-temporal and ontogenetic changes in the diet of the Argentine hake Merluccius hubbsi. Journal of the Marine Biological Association of the United Kingdom, v. 94, n. 8, p. 1701–1710, 2014. BOGGS, C. L. Understanding insect life histories and senescence through a resource a ...
... BELLEGGIA, M. et al. Spatio-temporal and ontogenetic changes in the diet of the Argentine hake Merluccius hubbsi. Journal of the Marine Biological Association of the United Kingdom, v. 94, n. 8, p. 1701–1710, 2014. BOGGS, C. L. Understanding insect life histories and senescence through a resource a ...
- Wiley Online Library
... Doutrelant et al. 2000). This view is supported by widespread species specificity in birdsong design, leading to the assertion that “all species have songs recognizably different from those of other species” (Baptista and Kroodsma 2001). Rare exceptions to the rule have been proposed as evidence of ...
... Doutrelant et al. 2000). This view is supported by widespread species specificity in birdsong design, leading to the assertion that “all species have songs recognizably different from those of other species” (Baptista and Kroodsma 2001). Rare exceptions to the rule have been proposed as evidence of ...
The masquerade game: marine mimicry adaptation between
... molecular systematics, we tested the hypothesis whether egg-cowrie shell (color and shape) polymorphisms, that currently are categorized as distinct species, correspond to different lineages (most likely due to a coevolutionary process) or, alternatively, plasticity or any other mechanism for mainta ...
... molecular systematics, we tested the hypothesis whether egg-cowrie shell (color and shape) polymorphisms, that currently are categorized as distinct species, correspond to different lineages (most likely due to a coevolutionary process) or, alternatively, plasticity or any other mechanism for mainta ...
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.