Organic Farming and Butterflies - North American Butterfly Association
... are scarce and fragmented, high mobility can facilitate exploration of the landscape at wider scales for additional resources. Sedentary species on the other hand are more dependent on having their resources nearby and have difficulty persisting in the most resourcepoor landscapes. High reproductive ...
... are scarce and fragmented, high mobility can facilitate exploration of the landscape at wider scales for additional resources. Sedentary species on the other hand are more dependent on having their resources nearby and have difficulty persisting in the most resourcepoor landscapes. High reproductive ...
spatial selection and inheritance: applying evolutionary concepts to
... and the spatial distribution of populations in heterogeneous space, and focuses empirical efforts on critical parameters estimable from field data. In addition, it highlights the generality of selection and inheritance as mechanisms of ecological as well as evolutionary change and provides opportunit ...
... and the spatial distribution of populations in heterogeneous space, and focuses empirical efforts on critical parameters estimable from field data. In addition, it highlights the generality of selection and inheritance as mechanisms of ecological as well as evolutionary change and provides opportunit ...
M I s : I
... ecology on the Mount Haggin Wildlife Management Area in southwestern Montana. In this presentation, we will briefly review our methodology and results, but will largely focus on the management implications of this research and potential ideas for future research. The goals of this research were to d ...
... ecology on the Mount Haggin Wildlife Management Area in southwestern Montana. In this presentation, we will briefly review our methodology and results, but will largely focus on the management implications of this research and potential ideas for future research. The goals of this research were to d ...
Two-species interactions
... evidence for resource limitation. A niche reflects the environmental requirements of a species. Mathematical and laboratory models provide theoretical foundation for studying competitive interactions in nature. Competition can have significant ecological and evolutionary influences on the nich ...
... evidence for resource limitation. A niche reflects the environmental requirements of a species. Mathematical and laboratory models provide theoretical foundation for studying competitive interactions in nature. Competition can have significant ecological and evolutionary influences on the nich ...
Habitat selection determines abundance, richness and species
... and thus operate both within communities and at the metacommunity scale (Resetarits 2005). Multispecies habitat selection generates very different ecological consequences compared with random dispersal and differential mortality because species distributions are based on the redistribution of indivi ...
... and thus operate both within communities and at the metacommunity scale (Resetarits 2005). Multispecies habitat selection generates very different ecological consequences compared with random dispersal and differential mortality because species distributions are based on the redistribution of indivi ...
Chap 5 APES
... • Extinction occurs when the environment changes too rapidly for natural selection to keep up • Endemic species - a species only exists in a certain, specialized area (golden toad to the Monteverde cloud forest) - Very susceptible to extinction - These species usually have small populations ...
... • Extinction occurs when the environment changes too rapidly for natural selection to keep up • Endemic species - a species only exists in a certain, specialized area (golden toad to the Monteverde cloud forest) - Very susceptible to extinction - These species usually have small populations ...
Observed Instances of Speciation
... argue that sexual compatibility is a primitive trait. Organisms that are no longer closely related may have retained the ability for genetic recombination with each other through sex. This is not a derived characteristic. Because of this it is invalid for defining monophyletic taxa. A final problem ...
... argue that sexual compatibility is a primitive trait. Organisms that are no longer closely related may have retained the ability for genetic recombination with each other through sex. This is not a derived characteristic. Because of this it is invalid for defining monophyletic taxa. A final problem ...
A test of alternative models of diversification in tropical rainforests
... size does not differ significantly within habitats on either side of the BMC (F1, 47 ⫽ 0.27, P ⫽ 0.606 for females; and F1, 45 ⫽ 0.91, P ⫽ 0.346 for males). The second PC explains 5.4% and 3.6% of the variation in females and males, respectively, and is largely a shape axis, with negative loadings f ...
... size does not differ significantly within habitats on either side of the BMC (F1, 47 ⫽ 0.27, P ⫽ 0.606 for females; and F1, 45 ⫽ 0.91, P ⫽ 0.346 for males). The second PC explains 5.4% and 3.6% of the variation in females and males, respectively, and is largely a shape axis, with negative loadings f ...
Mutualisms
... An obligate mutualism is an interaction in which at least one species cannot survive without the presence of the other species; a facultative mutualism is an interaction that benefits both species but is not required by either species. One reason facultative mutualisms are more common is that A) in ...
... An obligate mutualism is an interaction in which at least one species cannot survive without the presence of the other species; a facultative mutualism is an interaction that benefits both species but is not required by either species. One reason facultative mutualisms are more common is that A) in ...
CONCEPTUAL SYNTHESIS IN COMMUNITY ECOLOGY
... of speciation. Just as mutation is the ultimate source of genetic variation, so too is speciation the ultimate source of the species that make up ecological communities. The next key addition to the mix was ecological drift. Ecologists have long recognized that changes in the composition and diversi ...
... of speciation. Just as mutation is the ultimate source of genetic variation, so too is speciation the ultimate source of the species that make up ecological communities. The next key addition to the mix was ecological drift. Ecologists have long recognized that changes in the composition and diversi ...
Human survivorship curves. Most modern curves are
... large cohorts passing through child-bearing years. However, growth rate is slowing, and China’s population is predicted to peak in about 10 years; after that it will decline, IF fertility rates remain below replacement level. Replacement level is slightly over 2; why? ...
... large cohorts passing through child-bearing years. However, growth rate is slowing, and China’s population is predicted to peak in about 10 years; after that it will decline, IF fertility rates remain below replacement level. Replacement level is slightly over 2; why? ...
vs_mysterygraph_072810_lsalicaria
... skills to figure out and explain what happened during a 12-year scientific study in New Jersey to control the spread of invasive purple loosestrife. Students learn about a similar study happening at the Rachel Carson National Wildlife Refuge in Wells, Maine. ...
... skills to figure out and explain what happened during a 12-year scientific study in New Jersey to control the spread of invasive purple loosestrife. Students learn about a similar study happening at the Rachel Carson National Wildlife Refuge in Wells, Maine. ...
Mammalian Biology 88th Annual Meeting of the - JKI
... dynamics were studied by roost trapping and telemetry. Combining these data with parentage analyses using microsatellites we investigated the importance of mating behaviour at summer sites for successful reproduction and conservation management. Our hypothesis, that mating at summer sites plays an i ...
... dynamics were studied by roost trapping and telemetry. Combining these data with parentage analyses using microsatellites we investigated the importance of mating behaviour at summer sites for successful reproduction and conservation management. Our hypothesis, that mating at summer sites plays an i ...
Each of the following is an abiotic factor in the environment EXCEPT
... together and neither is harmed 3. One organism lives in or on another and benefits. 4. Two organisms nourish each other; both benefit. ...
... together and neither is harmed 3. One organism lives in or on another and benefits. 4. Two organisms nourish each other; both benefit. ...
Brown 2008 introduced_mammals_on_st._martin
... The invasion of ecosystems by exotic species is currently viewed as one of the main causes of global ecological change, mostly due to biodiversity loss (Vitousek et al. 1997). The largest part of this loss has occurred on islands where indigenous species had thrived in the absence of competition. Th ...
... The invasion of ecosystems by exotic species is currently viewed as one of the main causes of global ecological change, mostly due to biodiversity loss (Vitousek et al. 1997). The largest part of this loss has occurred on islands where indigenous species had thrived in the absence of competition. Th ...
Experimental evolution of protozoan traits in response to
... removed from replicates in both monoculture and competition treatments and placed in identical environments containing 20 mL of sterile well water and 6 mg of tetramin. Colpoda were grown under these common conditions for 24 h (3–6 generations) to diminish the role of phenotypic plasticity, because ...
... removed from replicates in both monoculture and competition treatments and placed in identical environments containing 20 mL of sterile well water and 6 mg of tetramin. Colpoda were grown under these common conditions for 24 h (3–6 generations) to diminish the role of phenotypic plasticity, because ...
Final Report - Rufford Small Grants
... reason of why Tripneustes depressus has this overwhelming effect is because its ability to forage under high flow conditions. Thus, having identified how and why this urchin species matters has important implications for the maintenance of diversity in the Galápagos Marine Reserve. And finally, my s ...
... reason of why Tripneustes depressus has this overwhelming effect is because its ability to forage under high flow conditions. Thus, having identified how and why this urchin species matters has important implications for the maintenance of diversity in the Galápagos Marine Reserve. And finally, my s ...
Homage to Malthus, Ricardo, and Boserup: Toward a General
... stake.) If technological improvement is rapid enough compared to population increase, N will lag K, and human populations will grow prosperous on the gap between resources and carrying capacity at current technology. Call this surplus capacity “prosperity,” where per capita prosperity (P)will be som ...
... stake.) If technological improvement is rapid enough compared to population increase, N will lag K, and human populations will grow prosperous on the gap between resources and carrying capacity at current technology. Call this surplus capacity “prosperity,” where per capita prosperity (P)will be som ...
Quantifying the evidence for biodiversity effects on ecosystem
... Rey Benayas, J.M., Newton, A.C., Diaz, A. & Bullock, J.M. (2009) Enhancement of biodiversity and ecosystem services by ecological restoration: a meta-analysis. Science, 325, 1121-1124. ...
... Rey Benayas, J.M., Newton, A.C., Diaz, A. & Bullock, J.M. (2009) Enhancement of biodiversity and ecosystem services by ecological restoration: a meta-analysis. Science, 325, 1121-1124. ...
Engineering the Genetic Code
... By engineering new genetic codes we can: • make universal systems for “plug and play” with new amino acids • block exchange of genes, a “genetic firewall” • produce organisms immune to viruses SS -6 PAC 8/18/11 ...
... By engineering new genetic codes we can: • make universal systems for “plug and play” with new amino acids • block exchange of genes, a “genetic firewall” • produce organisms immune to viruses SS -6 PAC 8/18/11 ...
Population and community
... Allee’s principle holds good. A number of plant species occur in groups, which may be in response to habitat preference or suitable climatic or environmental conditions or due to reproductive strategies. Within a group, the survival rates of species increase in response to the adverse environmental ...
... Allee’s principle holds good. A number of plant species occur in groups, which may be in response to habitat preference or suitable climatic or environmental conditions or due to reproductive strategies. Within a group, the survival rates of species increase in response to the adverse environmental ...