Impacts of invasive plant species on riparian plant assemblages: interactions with elevated atmospheric carbon dioxide and nitrogen deposition.

abstract：:In common with samples from less taxonomically constrained studies, significant correlations exist between the numbers of predatory and non-predatory species in assemblages of terrestrial beetles. Under logarithmic transformation the relationship can be described reasonably well by a straight line. Explanations for pr...

journal_title：Oecologia

authors： Gaston KJ,Warren PH,Hammond PM

更新日期：1992-06-01 00:00:00

abstract：:A three year study of Senecio keniodendron (Compositae), a giant rosette species of the alpine zone of Mt. Kenya, demonstrated that individuals which reproduce are more likely to die, and less likely to reproduce in the future if they do survive, than are vegetative individuals of the same size. However, if an individ...

journal_title：Oecologia

authors： Smith AP,Young TP

更新日期：1982-11-01 00:00:00

abstract：:Stable carbon and nitrogen isotope ratios in autotrophs, aquatic invertebrates and fishes from the Orinoco River floodplain of Venezuela reveal that microalgae, including both phytoplankton and epiphytic (attached) forms, are predominant energy sources for many aquatic animals, even though aquatic vascular plants are ...

journal_title：Oecologia

authors： Hamilton SK,Lewis WM Jr,Sippel SJ

更新日期：1992-03-01 00:00:00

abstract：:I increased the availability of tadpole-rearing sites (bromeliads) and oviposition sites (leaf litter) and examined the effects on space-use patterns in adult Dendrobates pumilio at the La Selva Biological Reserve in northeastern Costa Rica. I made 4158 observations of 986 marked adults during the seven-month study pe...

journal_title：Oecologia

authors： Donnelly MA

更新日期：1989-10-01 00:00:00

abstract：:Life history theory and empirical studies suggest that large size or earlier metamorphosis are suitable proxies for increased lifetime fitness. Thus, across a gradient of larval habitat quality, individuals with similar phenotypes for these traits should exhibit similar post-metamorphic performance. Here we examine th...

journal_title：Oecologia

authors： Van Allen BG,Briggs VS,McCoy MW,Vonesh JR

更新日期：2010-12-01 00:00:00

abstract：:The effect of the community composition of soil microbes on ecosystem processes has received relatively little attention. Here we examined the variation in soil microbial composition in a Yellowstone National Park grassland and the effect of that variation on the growth, in a greenhouse, of the dominant grass in the c...

journal_title：Oecologia

authors： Frank DA,Gehring CA,Machut L,Phillips M

更新日期：2003-12-01 00:00:00

abstract：:The effect of invertebrate shredders on organic matter dynamics and phosphorus spiralling was studied over a 30-week period in laboratory streams. The streams were fed by groundwater, layered with cobble and gravel from a natural stream, covered with opaque material to eliminate algal growth, and initially contained 1...

journal_title：Oecologia

authors： Mulholland PJ,Elwood JW,Newbold JD,Ferren LA

更新日期：1985-05-01 00:00:00

abstract：:Frugivorous birds disperse the seeds of many fruit-bearing plants, but the fate of seeds after defecation or regurgitation is often unknown. Some rodents gather and scatter hoard seeds, and some of these may be overlooked, germinate, and establish plants. We show that these two disparate modes of seed dispersal are li...

journal_title：Oecologia

authors： Vander Wall SB,Kuhn KM,Gworek JR

更新日期：2005-09-01 00:00:00

abstract：:Most animals metamorphose, changing morphology, physiology, behavior and ecological interactions. Size- and habitat-dependent mortality risk is thought to affect the evolution and plastic expression of metamorphic timing, and high predation during the morphological transition is posited as a critical selective force s...

journal_title：Oecologia

authors： Touchon JC,Jiménez RR,Abinette SH,Vonesh JR,Warkentin KM

更新日期：2013-11-01 00:00:00

abstract：:Parasites often produce large numbers of offspring within their hosts. High parasite burdens are thought to be important for parasite transmission, but can also lower host fitness. We studied the protozoan Ophryocystis elektroscirrha, a common parasite of monarch butterflies (Danaus plexippus), to quantify the benefit...

journal_title：Oecologia

authors： de Roode JC,Chi J,Rarick RM,Altizer S

更新日期：2009-08-01 00:00:00

abstract：:While foliar photosynthetic relationships with light, nitrogen, and water availability have been well described, environmental factors driving vertical gradients of foliar traits within forest canopies are still not well understood. We, therefore, examined how light availability and vapour pressure deficit (VPD) co-de...

journal_title：Oecologia

authors： Bachofen C,D'Odorico P,Buchmann N

更新日期：2020-02-01 00:00:00

abstract：:The competitive interactions between roach (Rutilus rutilus) and rudd (Scardinius erythrophthalmus) were investigated in two habitats, the open water and the waterlily zone. The growth rates of both species in enclosures were lower when confined together than when alone, demonstrating interspecific competition. Allopa...

journal_title：Oecologia

authors： Johansson L

更新日期：1987-08-01 00:00:00

abstract：:Ideal free distribution (IFD) models predict that animals distribute themselves such that no individual can increase its fitness by moving to another patch. Many empirical tests assume that the interference among animals is independent of density and do not quantify the effects of density on fitness traits. Using two ...

journal_title：Oecologia

authors： van der Hammen T,Montserrat M,Sabelis MW,de Roos AM,Janssen A

更新日期：2012-05-01 00:00:00

abstract：:Phytoplankton abundance in tropical lakes is more often judged to be limited by nitrogen than phosphorus, but seldom does the evidence include controlled enrichments of natural populations. In January 1980 we performed the first experimental fertilization in an equatorial African soda lake, Lake Sonachi, a small, mero...

journal_title：Oecologia

authors： Melack JM,Kilham P,Fisher TR

更新日期：1982-01-01 00:00:00

abstract：:We reared larvae of three generalist insect species on plants occurring in their habitats. Individuals of each species were kept either on mixed diets, or on each plant species separately. We measured food plant preference in the mixed-diet group and compared insect performance on single plants to the performance on t...

journal_title：Oecologia

authors： Hägele BF,Rowell-Rahier M

更新日期：1999-06-01 00:00:00

abstract：:Kelrick et al. (1986) argued that seed preferences of desert granivores are strongly influenced by soluble carbohydrate contents of native seed species. They assumed that bitterbrush (Purshia tridentata) seeds are eaten in their entirety by rodents, but in fact these granivores eat only embryos of bitterbrush seeds. E...

journal_title：Oecologia

authors： Jenkins SH

更新日期：1988-04-01 00:00:00

abstract：:Stemflow inputs of magnesium and potassium were measured from 57 canopy trees representing eight species under heavy rainfall conditions in two tropical forest sites in northeast Queensland, Australia. In the premontane tropical moist forest site on the Atherton Tableland, the stemflow input per unit trunk basal area ...

journal_title：Oecologia

authors： Herwitz SR

更新日期：1986-10-01 00:00:00

abstract：:The impact of predation by the robber fly Proctacanthus milbertii Macquart on populations of adult grasshoppers from grasslands of the Nebraska sandhills was estimated. Densities of P. milbertii were estimated at 437 individuals per hectare (2 se=122). Overall densities of 23 species of grasshoppers were estimated to ...

journal_title：Oecologia

authors： Joern A,Rudd NT

更新日期：1982-10-01 00:00:00

abstract：:We tested the hypothesis that generally higher levels of herbivory on bittercress in sun vs in shade, especially by leaf miners, were related to the earlier phenological development of plants in the sun. Naturally-occurring plants in the sun were taller and had longer leaves than did those in the shade during the firs...

journal_title：Oecologia

authors： Collinge SK,Louda SM

更新日期：1989-04-01 00:00:00

abstract：:Crucian carp (Carassius carassius) increases in body depth in response to chemical cues from piscivores and the deeper body constitutes a morphological defence against gape-limited piscivores. In the field, deep-bodied individuals suffer a density-dependent cost when competing with shallow-bodied conspecifics. Here, w...

journal_title：Oecologia

authors： Pettersson LB,Brönmark C

更新日期：1999-10-01 00:00:00

abstract：:Vein placement has been hypothesised to control leaf hydraulic properties, but the ecophysiological significance of variation in vein placement in the angiosperms has remained poorly understood. The highly diverse Neotropical Bromeliaceae offers an excellent system for exploring understudied relationships between leaf...

journal_title：Oecologia

authors： Males J

更新日期：2017-11-01 00:00:00

abstract：:Studies that test community assembly hypotheses in observational communities frequently evaluate patterns for plots or entire communities, yet studies that examine assembly patterns across spatial scales show that they are greatly influenced by scale. Here, we test the spatial dependency of patterns of relatedness and...

journal_title：Oecologia

authors： Jin LS,Yin D,Fortin MJ,Cadotte MW

更新日期：2020-07-01 00:00:00

abstract：:Herbivores are thought to achieve adequate nutrition by consuming numerous species of plants or by occasionally consuming animal tissue. Although active selection of diverse foods is common in nature, the relationship between diet mixing and consumer fitness is poorly understood, especially in marine environments. We ...

journal_title：Oecologia

authors： Cruz-Rivera E,Hay ME

更新日期：2000-05-01 00:00:00

abstract：:Ovipositing females of the cynipid waspPseudeucoila bochei discriminate between parasitized and unparasitized hosts, which results in a far more uniform distribution of eggs over the hosts than would be obtained if oviposition were random (Fig. 1,a 0-f 0).For the description of the distributions a few models were work...

journal_title：Oecologia

authors： Bakker K,Eijsackers HJ,van Lenteren JC,Meelis E

更新日期：1972-03-01 00:00:00

abstract：:Seasonal excavations of ramet systems in overlapping natural populations of Typha latifolia and T. angustifolia revealed intrapopulation variation in ramet size and reproduction. Reproductive "states" were recognized based on whether or not a ramet had flowered and the number of offspring ramets it possessed. As the g...

journal_title：Oecologia

authors： Grace JB,Wetzel RG

更新日期：1982-01-01 00:00:00

abstract：:In the simultaneously hermaphroditic marine fish, Serranus subligarius, male role individuals are known to pair spawn, group spawn and streak spawn. While the effects of these common mating tactics on mating success in the male role have been well studied, their consequences for the reproductive success of the individ...

journal_title：Oecologia

authors： Adreani MS

更新日期：2012-10-01 00:00:00

abstract：:I suggest that between-community variations in diversity patterns during succession in plant communities are due to the effects of selection on life history strategies under different disturbance regimes. Natural disturbances to plant communities are simultaneously a source of mortality for some individuals and a sour...

journal_title：Oecologia

authors： Denslow JS

更新日期：1980-07-01 00:00:00

abstract：:The chaparral shrub Eriodictyon californicum secretes a phenolic leaf resin composed of flavonoid aglycones. We used leaves with artificially altered resin contents to test the effects of resin on the feeding, growth, and oviposition of the specialist herbivore Trirhabda diducta. In addition, we compared Trirhabda fee...

journal_title：Oecologia

authors： Johnson ND,Brain SA,Ehrlich PR

更新日期：1985-04-01 00:00:00

abstract：:Blue oak (Quercus douglasii) is a deciduous tree species endemic to California that currently exhibits poor seedling survival to sapling age classes. We used common garden techniques to examine how genetic variation at regional and local scales affected phenotypic expression in traits affecting oak seedling growth and...

journal_title：Oecologia

authors： Rice KJ,Gordon DR,Hardison JL,Welker JM

更新日期：1993-12-01 00:00:00

abstract：:The thermoregulatory significance of a striped-melanic colour polymorphism in the common garter snake, Thamnophis sirtalis, was assessed through a combination of labortory experimentation and field study. In experiments with living snakes the melanic morph maintained a higher body temperature than the striped morph, w...

journal_title：Oecologia

authors： Ralph Gibson A,Bruce Falls J

更新日期：1979-10-01 00:00:00