Adaptations to Intraguild Competition
... The ecological role of mammalian carnivores has traditionally been thought to be limited to controlling prey populations but in recent years it has become clear that stable, intact carnivore guilds play an important role in structuring entire biological communities (e.g. Crooks and Soule 1999, Berge ...
... The ecological role of mammalian carnivores has traditionally been thought to be limited to controlling prey populations but in recent years it has become clear that stable, intact carnivore guilds play an important role in structuring entire biological communities (e.g. Crooks and Soule 1999, Berge ...
Fact sheet on the giant willow aphid
... determined before bio-control becomes a viable option. In future, some bird species may prove useful predators of this aphid. ...
... determined before bio-control becomes a viable option. In future, some bird species may prove useful predators of this aphid. ...
Investigating a Competitive Two Species System that Produces
... Ecosystem engineers are organisms that have the capability to change a given abiotic factor, changing the local environment and habitat with its presence (Jones et al. 1994). The change can be done by changing materials in the environment (allogenic ecosystem engineers) or by the organism changing i ...
... Ecosystem engineers are organisms that have the capability to change a given abiotic factor, changing the local environment and habitat with its presence (Jones et al. 1994). The change can be done by changing materials in the environment (allogenic ecosystem engineers) or by the organism changing i ...
Daphnia hybridization along ecological gradients in pelagic
... hybrids of the D. longispina complex seem to be sizeselective fish predation pressure and food level, as it is Phil. Trans. R. Soc. B (2008) ...
... hybrids of the D. longispina complex seem to be sizeselective fish predation pressure and food level, as it is Phil. Trans. R. Soc. B (2008) ...
population dynamics of two species of kleptoparasitic spiders
... July 1997 to April 1998 at intervals of approximately 2–3 mo. I recorded all web spiders with body lengths larger than 4 mm living within 2 m from the transect and 2 m from the ground. I recorded the spider body length, the vertical and horizontal web diameters, any prey being consumed, and any smal ...
... July 1997 to April 1998 at intervals of approximately 2–3 mo. I recorded all web spiders with body lengths larger than 4 mm living within 2 m from the transect and 2 m from the ground. I recorded the spider body length, the vertical and horizontal web diameters, any prey being consumed, and any smal ...
Could controlling mammalian carnivores lead to mesopredator
... over and above predation by foxes and cats [60]. In the Great Victoria Desert, Pianka [35] described V. gouldii as a keystone predator as it consumes the largest array of reptile species including three other species of Varanus, as well as its own kind. Instances of varanids being used for pest cont ...
... over and above predation by foxes and cats [60]. In the Great Victoria Desert, Pianka [35] described V. gouldii as a keystone predator as it consumes the largest array of reptile species including three other species of Varanus, as well as its own kind. Instances of varanids being used for pest cont ...
Mass-Scaled Rates of Respiration and Intrinsic
... Abstract: This review compares rates of oxygen uptake and intrinsic growth of very small invertebrate species near 20 "C with those of larger invertebrate and unicellular animals by means of the allometric relation (rate a Mb where M = mass). Respiration rates of small species of major invertebrate ...
... Abstract: This review compares rates of oxygen uptake and intrinsic growth of very small invertebrate species near 20 "C with those of larger invertebrate and unicellular animals by means of the allometric relation (rate a Mb where M = mass). Respiration rates of small species of major invertebrate ...
Bust economics: foragers choose high quality habitats in
... The physiological adaptations of desert-dwelling mammals have been much studied (Degen et al., 1997; Geiser, 2004; Schwimmer & Haim, 2009), but the behavioral responses of these mammals to arid environments are less well known. Large species such as giraffe (Giraffa camelopardalis) can move long dis ...
... The physiological adaptations of desert-dwelling mammals have been much studied (Degen et al., 1997; Geiser, 2004; Schwimmer & Haim, 2009), but the behavioral responses of these mammals to arid environments are less well known. Large species such as giraffe (Giraffa camelopardalis) can move long dis ...
AP BIOLOGY SUMMER ASSIGNMENT 2013
... 7. Explain how edges and corridors can strongly influence landscape biodiversity. 8. Define biodiversity hot spots and explain why they are important. 9. Explain why natural reserves must be functional parts of landscapes. 10. Define zoned reserves and explain why they are important. 11. Define rest ...
... 7. Explain how edges and corridors can strongly influence landscape biodiversity. 8. Define biodiversity hot spots and explain why they are important. 9. Explain why natural reserves must be functional parts of landscapes. 10. Define zoned reserves and explain why they are important. 11. Define rest ...
Unit 1 Review Multiple Choice Identify the letter of the choice that
... a. They enable the organism to survive in its environment. b. They help the organism to compete with other organisms. c. They increase competition among different organisms. d. They allow organisms to play a specific role in their environment. ____ 22. When two organisms are competing for resources, ...
... a. They enable the organism to survive in its environment. b. They help the organism to compete with other organisms. c. They increase competition among different organisms. d. They allow organisms to play a specific role in their environment. ____ 22. When two organisms are competing for resources, ...
report of the first meeting of the ad hoc technical expert group
... have a negative impact on the target vector and pathogen3 and other non-target species. Such as: New or more vigorous pests, especially those that have adverse effects on human health: (i) the released LM mosquitoes may not function as expected, for example due to gene silencing or undetected failur ...
... have a negative impact on the target vector and pathogen3 and other non-target species. Such as: New or more vigorous pests, especially those that have adverse effects on human health: (i) the released LM mosquitoes may not function as expected, for example due to gene silencing or undetected failur ...
Environmental Biology ~ Allan M. Jones ~ 2001
... The last few years have witnessed tremendous changes in the syllabi of environmentallyrelated courses at Advanced Level and in tertiary education. Moreover, there have been major alterations in the way degree and diploma courses are organised in colleges and universities. Syllabus changes reflect th ...
... The last few years have witnessed tremendous changes in the syllabi of environmentallyrelated courses at Advanced Level and in tertiary education. Moreover, there have been major alterations in the way degree and diploma courses are organised in colleges and universities. Syllabus changes reflect th ...
Deterministic and stochastic forces in community ecology:
... In this paper we present the results of a community assembly model designed to address the roles of functional diversity and neutrality on community structure. This model extends the non-spatial assembly model of Tilman (2004) to a spatially explicit individual-based framework. Our model is based o ...
... In this paper we present the results of a community assembly model designed to address the roles of functional diversity and neutrality on community structure. This model extends the non-spatial assembly model of Tilman (2004) to a spatially explicit individual-based framework. Our model is based o ...
Lethal interactions among vertebrate top predators
... more than one term, but although there may be some degree of overlap, the terms used are far from being synonyms. Thus, it is useful to always bear in mind their definitions. (1) Predation This concept is one of the pillars of ecology, and for the purposes of this article we simply need to stress th ...
... more than one term, but although there may be some degree of overlap, the terms used are far from being synonyms. Thus, it is useful to always bear in mind their definitions. (1) Predation This concept is one of the pillars of ecology, and for the purposes of this article we simply need to stress th ...
can intraspecific competition drive disruptive selection?
... results support long-standing theoretical arguments that intraspecific competition drives disruptive selection and thus may be an important causal agent in the evolution of ecological variation. Key words. minima. ...
... results support long-standing theoretical arguments that intraspecific competition drives disruptive selection and thus may be an important causal agent in the evolution of ecological variation. Key words. minima. ...
Ecosystems and Environment
... Copyright © 2007 Pearson Education, Inc., publishing as Pearson Addison-Wesley ...
... Copyright © 2007 Pearson Education, Inc., publishing as Pearson Addison-Wesley ...
Environmental filtering of crustacean zooplankton
... refuge to withstand invertebrate predation in these habitats (O’Brien and Schmidt, 1979; Riessen et al., 1988; Kats and Dill, 1998). Further, several field, laboratory and model-based studies indicate contrasting competitive outcomes between large- and small-bodied zooplankton taxa under fishless co ...
... refuge to withstand invertebrate predation in these habitats (O’Brien and Schmidt, 1979; Riessen et al., 1988; Kats and Dill, 1998). Further, several field, laboratory and model-based studies indicate contrasting competitive outcomes between large- and small-bodied zooplankton taxa under fishless co ...
Interspecific Competition Between Two Invasive Species of
... combinations) as factors. For analyses of ⬘ for A. aegypti, no transformation yielded data that met the assumptions of normality and homogeneous variance. Therefore, randomization ANOVA (Manly 1991a,b) was used for the analyses of ⬘ for A. aegypti. Because conclusions of least squares ANOVA and ra ...
... combinations) as factors. For analyses of ⬘ for A. aegypti, no transformation yielded data that met the assumptions of normality and homogeneous variance. Therefore, randomization ANOVA (Manly 1991a,b) was used for the analyses of ⬘ for A. aegypti. Because conclusions of least squares ANOVA and ra ...
A Survey and Overview of Habitat Fragmentation Experiments
... “expected” manner. Reasons for these discrepancies included edge effects, competitive release in the habitat fragments, and the spatial scale of the experiments. One of the more consistently supported hypotheses was that movement and species richness are positively affected by corridors and connecti ...
... “expected” manner. Reasons for these discrepancies included edge effects, competitive release in the habitat fragments, and the spatial scale of the experiments. One of the more consistently supported hypotheses was that movement and species richness are positively affected by corridors and connecti ...