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Life history strategies, population regulation, and implications for
Life history strategies, population regulation, and implications for

... the short term), with recruitment dynamics also being irregular. Type IB species are favored when environmental variation occurs over longer periods, and Type II species are favored when environmental variation is low and predictable. Based on patterns of life history variation in tropical freshwate ...
Population Ecology_AP Bio
Population Ecology_AP Bio

... b. Grasses, many insects -Usually quickly invade, reproduce many offspring and die -Offspring mature quickly and require very little parental ...
Diversityinteraction modeling: estimating contributions of species
Diversityinteraction modeling: estimating contributions of species

... mixed community can differ from that expected from a combination of the individual species performances. This difference between the actual performance of a mixture and the performance expected from the monoculture performances is the diversity effect, DE (Fig. 1c, d) (Loreau 1998). Interactions amo ...
Kirwan in Ecology
Kirwan in Ecology

... mixed community can differ from that expected from a combination of the individual species performances. This difference between the actual performance of a mixture and the performance expected from the monoculture performances is the diversity effect, DE (Fig. 1c, d) (Loreau 1998). Interactions amo ...
Strong density- and diversity-related effects help to maintain tree
Strong density- and diversity-related effects help to maintain tree

... compared with the numbers expected by chance, given in column 2 of Table 1. Negative density-dependence predicts negative correlations of basal area with per capita survival among adults, juveniles, and all trees (correlations a, b, and c), recruitment (correlation d), and r (correlation e). In each ...
Documentos a serem entregues pelo SWG “Mosquitoes”
Documentos a serem entregues pelo SWG “Mosquitoes”

... New or more vigorous pests, especially those that have adverse effects on human health: (i) The released LM mosquitoes may not function as expected. Gene silencing or production failures could result in the release of non-sterile or competent mosquitoes and thus increase the vector population or dis ...
Coexistence, niches and biodiversity effects on ecosystem functioning
Coexistence, niches and biodiversity effects on ecosystem functioning

... among species exhibiting substantial trait variation is unlikely (Turnbull et al. 2008; Purves & Turnbull 2010) coexistence requires the operation of stabilising forces that induce frequency-dependent community dynamics, reflected in species having higher population growth rates when rare (Levine & ...
Community Ecology_54
Community Ecology_54

...  Interspecific competition (/ interaction) occurs when species compete for a resource in short supply ...
Temporal stability of European rocky shore assemblages
Temporal stability of European rocky shore assemblages

... These studies have revealed that a variety of factors, such as species traits and trophic-level, environmental conditions, resource availability and spatial and temporal scale investigated, can generate large context-dependency in the strength of the mechanisms underlying community stability. Little ...
Evolution, Biodiversity, and Population Ecology
Evolution, Biodiversity, and Population Ecology

... - Extremely good at what they do, but vulnerable to change • Generalists = species with broad niches that can use a wide array of habitats and resources - Able to live in many different places Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings ...
Ecology Review Sheet
Ecology Review Sheet

... 26. Explain what is meant by: energy flows through an ecosystem and chemicals are cycled. Give an example of each. 27. By what means do organisms become so adapted to their environments and why can these adaptations be dangerous in terms of a rapidly changing environment? 28. Describe the reason for ...
Effects of density and ontogeny on size and growth
Effects of density and ontogeny on size and growth

... wide range of shade-tolerance, growth rates, net photosynthetic capacity, leaf morphologies, leaf life span, leaf respiration rates and other plant traits (Table 1; Reich et al. 1998a,b). Even though all three species are conifers, these trait differences should lead to different competitive strateg ...
Introductory Ecology Laboratory Manual - Your Space
Introductory Ecology Laboratory Manual - Your Space

... purpose is to inform an audience of other scientists about an important issue and to document the particular approach they used to investigate that issue. Clear, concise, proper English grammar is critical in science writing. Most scientific papers have multiple co-authors. The first paper you will ...
1 - Biology Department | UNC Chapel Hill
1 - Biology Department | UNC Chapel Hill

When is more species better? A long and winding ecological
When is more species better? A long and winding ecological

Competition and the Structure of Granivore
Competition and the Structure of Granivore

... relationship to their resources than are ants, simple differences in the sizes of seeds foraged are less likely to provide a f u n c t i o n a l b a s i s for b o d y s i z e dis­ placement. For seed types differing in size and dispersion, the foraging effi­ ciencies of rodents are apt to be deter­ ...
Phytoplankton niches, traits and eco
Phytoplankton niches, traits and eco

... outline here (Fig. 1). First, a species’ phenotypic plasticity (Table 1) can allow it to persist as the environment changes (Charmantier et al. 2008), essentially widening its ecological niche (Polechova & Storch 2008). Species, as well as traits, differ in their plasticity ranges, and higher plasti ...
13 Populations
13 Populations

... (c) hares increased between 1855 and 1865? (d) lynx increased between 1860 and 1865? (e) hares decreased between 1865 and ...
Nitrogen acquisition from different spatial distributions by six Great
Nitrogen acquisition from different spatial distributions by six Great

... scales of foraging. In this study we evaluated the ability of 6 species commonly found in the Great Basin to utilize nitrogen (N) distributed in different patterns. Three growth forms were represented by these 6 species. We applied 15N-labeled nitrogen in concentrated patches and over broader unifor ...
Chapter 4
Chapter 4

... logistic function, as every schoolboy knows. A feature that interferes with this in the real world is the ...
Invasion in a heterogeneous world: resistance, coexistence or
Invasion in a heterogeneous world: resistance, coexistence or

... Our focus is the effect on invasions of heterogeneity per se, such as might be quantified by the statistical variance. There are different types of heterogeneity. One important distinction is between environmental (or abiotic) heterogeneity vs. biotic heterogeneity. Environmental heterogeneity is va ...
Population, Land Use Change, and Species Endangerment in the
Population, Land Use Change, and Species Endangerment in the

... projected development conflict, while red represent areas where projected land-use change and important T&E habitat overlap. Within this scenario, 233,075 additional hectares are projected as developed, 162,542 (69.73%) of which are characterized as habitat for at least 3 threatened and endangered ...
Growth, regeneration and predation in three species of large coral
Growth, regeneration and predation in three species of large coral

... found in the comparison of parallel measurements along the whole body contour of an individual sponge. Zero growth rates and even negative values (shrinkage) were found at intervals for some points on individuals of all 3 species. There was no apparent pattern in this variation, but overall size of ...
Fouling Community Studies in the Indian River
Fouling Community Studies in the Indian River

... on what time of year the substrate is immersed in the water. Data collected from 3 and 6 month plates indicates that Styela plicata and oysters may be important in at least one stable state of the fouling community. ...
Ecological and evolutionary implications of food subsidies
Ecological and evolutionary implications of food subsidies

... birds (Margalida et al. 2010; Martınez-Abraın et al. 2012). Bird feeding is particularly important in some industrialised countries (e.g. the USA and the UK, see Table 1) with important consequences for passerine communities and the cascading effects associated (Table S1, see also Robb et al. 2008 ...
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Storage effect

The storage effect is a coexistence mechanism proposed in the ecological theory of species coexistence, which tries to explain how such a wide variety of similar species are able to coexist within the same ecological community or guild. The storage effect was originally proposed in the 1980s to explain coexistence in diverse communities of coral reef fish, however it has since been generalized to cover a variety of ecological communities. The theory proposes one way for multiple species to coexist: in a changing environment, no species can be the best under all conditions. Instead, each species must have a unique response to varying environmental conditions, and a way of buffering against the effects of bad years. The storage effect gets its name because each population ""stores"" the gains in good years or microhabitats (patches) to help it survive population losses in bad years or patches. One strength of this theory is that, unlike most coexistence mechanisms, the storage effect can be measured and quantified, with units of per-capita growth rate (offspring per adult per generation).The storage effect can be caused by both temporal and spatial variation. The temporal storage effect (often referred to as simply ""the storage effect"") occurs when species benefit from changes in year-to-year environmental patterns, while the spatial storage effect occurs when species benefit from variation in microhabitats across a landscape.
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