Indirect effects of phorid ¯y parasitoids on the mechanisms of
... direct vicinity of very few baits, a low level of posturing was observed at many baits, indicating that ants were aware of the general presence of phorids in the area. (The posturing behavior may be a response to chemical cues released by other workers; see Discussion). In late October 1996 when a t ...
... direct vicinity of very few baits, a low level of posturing was observed at many baits, indicating that ants were aware of the general presence of phorids in the area. (The posturing behavior may be a response to chemical cues released by other workers; see Discussion). In late October 1996 when a t ...
COMPETITION AND COEXISTENCE OF LARVAL ANT LIONS
... species consumes shared resources, why doesn’t one member of the pair go extinct? Traditionally, there have been three kinds of answers. First, factors such as predation or disturbance may suppress densities to chronically low levels, so that shared resources never become limiting (Connell 1975, Sou ...
... species consumes shared resources, why doesn’t one member of the pair go extinct? Traditionally, there have been three kinds of answers. First, factors such as predation or disturbance may suppress densities to chronically low levels, so that shared resources never become limiting (Connell 1975, Sou ...
Coexistence of two stage-structured intraguild predators
... intraguild populations by defining a trade-off between feeding on heterospecifics and resource. In their model, coexistence was only possible when omnivores were ‘punished’ with lower combined maximum intake rates compared to specialized predators or consumers. In essence, coexistence was only possibl ...
... intraguild populations by defining a trade-off between feeding on heterospecifics and resource. In their model, coexistence was only possible when omnivores were ‘punished’ with lower combined maximum intake rates compared to specialized predators or consumers. In essence, coexistence was only possibl ...
28/09/03 1 Classification: Biological Sciences: Evolution 1 2
... were consistent with a previous inter-specific study (1). Although recombination may be expected at nuclear loci, levels of r, the ratio between per-site recombination rate and per-site mutation rate (17), at Mpi and Tpi were low in both species, and comparable to those in mtDNA datasets (Table 1). ...
... were consistent with a previous inter-specific study (1). Although recombination may be expected at nuclear loci, levels of r, the ratio between per-site recombination rate and per-site mutation rate (17), at Mpi and Tpi were low in both species, and comparable to those in mtDNA datasets (Table 1). ...
lions on small reserves - Carnivore Conservation
... 1986; Wemmer & Sunquist, 1988; Mills, 1991). These failures can be attributed to a number of factors including the following: long-term monitoring programmes are costly and are often abandoned before sufficient data is collected. In many cases, subject lions escape from the reserve or farm and are d ...
... 1986; Wemmer & Sunquist, 1988; Mills, 1991). These failures can be attributed to a number of factors including the following: long-term monitoring programmes are costly and are often abandoned before sufficient data is collected. In many cases, subject lions escape from the reserve or farm and are d ...
Stachowicz Annual Reviews - Virginia Institute of Marine Science
... the highest performing monoculture (transgressive overyielding), this can be taken as clear evidence that the richness effect is not accounted for purely by the effects of a dominant species, and that some form of complementarity is operating. The sampling effect occurs when the presence of a partic ...
... the highest performing monoculture (transgressive overyielding), this can be taken as clear evidence that the richness effect is not accounted for purely by the effects of a dominant species, and that some form of complementarity is operating. The sampling effect occurs when the presence of a partic ...
University of Groningen Introduction Dennen, JMG van der
... This volume is devoted to one type of analysis of conflict, the sociobiological one. In The Sociobiology of Ethnocentrism, a book closely related to many of the ideas and some authors of this volume, sociobiology was defined as ‘the branch of biology that concerns itself with the explanation of soci ...
... This volume is devoted to one type of analysis of conflict, the sociobiological one. In The Sociobiology of Ethnocentrism, a book closely related to many of the ideas and some authors of this volume, sociobiology was defined as ‘the branch of biology that concerns itself with the explanation of soci ...
asymmetrical pollen success in ipomopsis
... and I. tenuituba pollen from either GR or PG, while noncompetitive crosses included pollen from only a single species from GR. We performed competitive crosses of GR donors on GR and PG recipients to test for pollen competition between the species at GR. We also performed competitive crosses of PG d ...
... and I. tenuituba pollen from either GR or PG, while noncompetitive crosses included pollen from only a single species from GR. We performed competitive crosses of GR donors on GR and PG recipients to test for pollen competition between the species at GR. We also performed competitive crosses of PG d ...
Key Threatening Process Nomination Form
... heritage and Indigenous culture (Clutton-Brock, 1995). Since dingoes arrived in Australia they have been woven into numerous aspects of Aboriginal life, playing prominent parts in both mythology and everyday life. They fulfilled the role of companion and protector (both physical and spiritual), and ...
... heritage and Indigenous culture (Clutton-Brock, 1995). Since dingoes arrived in Australia they have been woven into numerous aspects of Aboriginal life, playing prominent parts in both mythology and everyday life. They fulfilled the role of companion and protector (both physical and spiritual), and ...
The effect of intra- and interspecific competition on coexistence in
... Techniques for evaluating the stability of multispecies communities have been available for many decades, and include invasion analysis, loop analysis, and qualitative modeling. Invasion analysis (Chesson and Ellner 1989, Chesson 1994, 2009, Adler et al. 2007, Siepielski and McPeek 2010) attempts to ...
... Techniques for evaluating the stability of multispecies communities have been available for many decades, and include invasion analysis, loop analysis, and qualitative modeling. Invasion analysis (Chesson and Ellner 1989, Chesson 1994, 2009, Adler et al. 2007, Siepielski and McPeek 2010) attempts to ...
Indirect interactions and plant community structure
... prairie grasses and forbs and one highly invasive European forb, Centaurea stoebe¸ were grown alone, in all pairwise combinations, and in a novel replacement series with Latin square matrix plot combinations that allowed for all possible combinations of contacts among species. By iteratively omittin ...
... prairie grasses and forbs and one highly invasive European forb, Centaurea stoebe¸ were grown alone, in all pairwise combinations, and in a novel replacement series with Latin square matrix plot combinations that allowed for all possible combinations of contacts among species. By iteratively omittin ...
Modeling multiple nonconsumptive effects in
... marine predators (Madin et al. 2010). Yet, despite this wealth of empirical studies, there remains a dearth of empirically informed models of NCEs. This lack of data-informed models is not due to a lack of theoretical work on NCEs. The theoretical research on NCEs to date has yielded insight into ho ...
... marine predators (Madin et al. 2010). Yet, despite this wealth of empirical studies, there remains a dearth of empirically informed models of NCEs. This lack of data-informed models is not due to a lack of theoretical work on NCEs. The theoretical research on NCEs to date has yielded insight into ho ...
Do changes in berry crops drive population fluctuations in small C
... X̄ 5 92% 6 3% SE; documented in Boonstra and Krebs [2006]). Some breeding continues into September so that the late summer density estimates are not peak densities but provide an index of the rate of increase in summer populations. We have found no evidence of winter breeding in these 3 species at K ...
... X̄ 5 92% 6 3% SE; documented in Boonstra and Krebs [2006]). Some breeding continues into September so that the late summer density estimates are not peak densities but provide an index of the rate of increase in summer populations. We have found no evidence of winter breeding in these 3 species at K ...
A Stoichiometric Model of Early Plant Primary Succession
... cat’s ear (Hypochaeris radicata; a weedy, nonnative composite), Lupinus decreased in biomass, and overall community biomass increased (Gill et al. 2006; Bishop et al. 2010). With additional P, Lupinus biomass increased over the short term, but other plant species experienced longterm benefit from N ...
... cat’s ear (Hypochaeris radicata; a weedy, nonnative composite), Lupinus decreased in biomass, and overall community biomass increased (Gill et al. 2006; Bishop et al. 2010). With additional P, Lupinus biomass increased over the short term, but other plant species experienced longterm benefit from N ...
Interim koala referral advice for proponents
... the Australian Capital Territory (ACT) have been listed as vulnerable under the Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act). This listing came into legal effect on 2 May 2012. The listed threatened QLD, NSW and ACT populations are hereafter referred to in these guideline ...
... the Australian Capital Territory (ACT) have been listed as vulnerable under the Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act). This listing came into legal effect on 2 May 2012. The listed threatened QLD, NSW and ACT populations are hereafter referred to in these guideline ...
Interactions between sea urchin grazing and prey diversity on
... richness on urchin consumption in the field in each experiment using a factorial design that crossed the natural gradient in species richness against the full gradient observed in urchin density. This was done by grouping species richness and urchins into separate bins by amount, and then using these ...
... richness on urchin consumption in the field in each experiment using a factorial design that crossed the natural gradient in species richness against the full gradient observed in urchin density. This was done by grouping species richness and urchins into separate bins by amount, and then using these ...
leaf litter ant assemblage in a natural fragmented dry forest
... Leaf litter weight and bromeliad density showed a strong spatial structure in their distribution along transects A and B (Fig. 2). Leaf litter quantity correlogram indicated evidence of a periodic spatial distribution along both transects (Fig. 2A, B). Positive autocorrelations (peaks) were observed ...
... Leaf litter weight and bromeliad density showed a strong spatial structure in their distribution along transects A and B (Fig. 2). Leaf litter quantity correlogram indicated evidence of a periodic spatial distribution along both transects (Fig. 2A, B). Positive autocorrelations (peaks) were observed ...
Theoretical and empirical studies on population dynamics, species
... Laska & Wootton 1998). In the third chapter of the thesis, we will systematically investigate the effects of the foraging parameters on the mean time to extinction of a prey species subjected to constant predation. The generalization of the Lotka-Volterra equations with realistic functional response ...
... Laska & Wootton 1998). In the third chapter of the thesis, we will systematically investigate the effects of the foraging parameters on the mean time to extinction of a prey species subjected to constant predation. The generalization of the Lotka-Volterra equations with realistic functional response ...
metacommunity influences on community richness at multiple spatial
... resulted in observable differences in composition, community similarity was calculated using either the Sorenson index or between-community contrasts within a metacommunity, at day 50. For example, highly connected communities should be more similar than less connected communities. The similarity va ...
... resulted in observable differences in composition, community similarity was calculated using either the Sorenson index or between-community contrasts within a metacommunity, at day 50. For example, highly connected communities should be more similar than less connected communities. The similarity va ...
Linking internal and external bacterial community control gives
... lysis, which gives a range of competitive abilities in the host population, where competitively superior strains support higher viral abundances at steady state. The efficiency by which BP is transferred to higher trophic levels and/or exported to the deep ocean depends on the amount of viruses and ...
... lysis, which gives a range of competitive abilities in the host population, where competitively superior strains support higher viral abundances at steady state. The efficiency by which BP is transferred to higher trophic levels and/or exported to the deep ocean depends on the amount of viruses and ...
Hind-Limb Length Plasticity in Anolis carolinensis
... the pattern of hind-limb growth exist between the two species. Although there was a significant difference in hind-limb growth between males and females for both A. carolinensis and A. sagrei, the magnitude of the difference was much greater for A. sagrei (Fig. 2). Furthermore, the difference betwee ...
... the pattern of hind-limb growth exist between the two species. Although there was a significant difference in hind-limb growth between males and females for both A. carolinensis and A. sagrei, the magnitude of the difference was much greater for A. sagrei (Fig. 2). Furthermore, the difference betwee ...