Factors modulating cottongrass seedling growth stimulation to enhanced nitrogen and carbon dioxide: compensatory tradeoffs in leaf dynamics and allocation to meet potassium-limited growth.

abstract：:Nitrogen deposition in the northeastern US changed N availability in the latter part of the twentieth century, with potential legacy effects. However, long-term N cycle measurements are scarce. N isotopes in tree rings have been used as an indicator of N availability through time, but there is little verification of w...

journal_title：Oecologia

authors： Burnham MB,Adams MB,Peterjohn WT

更新日期：2019-12-01 00:00:00

abstract：:The tropical ants Ectatomma ruidum and E. tuberculatum (Formicidae) regularly patrol leaves, flowers, and fruits of the understory shrub, Psychotria limonensis (Rubiaceae), on Barro Colorado Island, Panama. Ant and pollinator exclusion experiments elucidated both positive and negative effects of ant attendance on plan...

journal_title：Oecologia

authors： Altshuler DL

更新日期：1999-06-01 00:00:00

abstract：:Larvae of the pyralid moth, Herpetogramma aeglealis, construct feeding shelters upon the Christmas fern (Polystichum acrostichoides). Field and laboratory study involving 532 shelters showed that as the larvae mature, they sequentially inhabit approximately 5 shelters of 3 distinct types, constructed at night on diffe...

journal_title：Oecologia

authors： Ruehlmann TE,Matthews RW,Matthews JR

更新日期：1988-03-01 00:00:00

abstract：:Leptopterna dolobrata (L.) (Holarctis) and Calocoris roseomaculatus (De Geer) (Palaearctis) are single-brooded in the whole range of their distribution and hibernate in the egg stage. Both species are active only for 21/2 months, while the egg stage lasts over 9 months.The main food plants of Leptopterna are Dactylis ...

journal_title：Oecologia

authors： Braune HJ

更新日期：1971-09-01 00:00:00

abstract：:The palatability of 14 species of woody plant was assessed for three species of browsing ruminant, namely kudus, impalas and goats. Results show that palatability was most clearly related to leaf contents of condensed tannins. The effect was a threshold one, with all plants containing more than 5% condensed tannins be...

journal_title：Oecologia

authors： Cooper SM,Owen-Smith N

更新日期：1985-08-01 00:00:00

abstract：:A central point in life history theory is that parental investment in current reproduction should be balanced by the costs in terms of residual reproductive value. Long-lived seabirds are considered fixed investors, that is, parents fix a specific level of investment in their current reproduction independent to the br...

journal_title：Oecologia

authors： Navarro J,González-Solís J

更新日期：2007-02-01 00:00:00

abstract：:Landscape position, grazing, and seasonal variation in precipitation and temperature create spatial and temporal variability in soil processes, and plant biomass and composition in grasslands. However, it is unclear how this variation in plant and soil properties affects carbon dioxide (CO2) fluxes. The aim of this st...

journal_title：Oecologia

authors： Risch AC,Frank DA

更新日期：2006-03-01 00:00:00

abstract：:Photosynthetic induction under constant and fluctuating light conditions was investigated in intact leaves of Alocasia macrorrhiza and Toona australis, two species native to Australian rainforests. When leaves were exposed to saturating light following a long period at low light intensity, an induction period of 25-40...

journal_title：Oecologia

authors： Chazdon RL,Pearcy RW

更新日期：1986-07-01 00:00:00

abstract：:The sensible and latent heat losses of a maritime pine stand (Pinus pinaster Aiton) and of its understorey were measured in Portugal, in conditions of mild water stress, using an eddy covariance technique (monodimensional sonic anemometer coupled with a thin thermocouple and a fast-response hygrometer) at two levels a...

journal_title：Oecologia

authors： Berbigier P,Bonnefond JM,Loustau D,Ferreira MI,David JS,Pereira JS

更新日期：1996-03-01 00:00:00

abstract：:Life history theory predicts that migratory fishes should delay reproduction, be larger at first reproduction, and have higher fecundities than nonmigrants. We tested this hypothesis by comparing life histories of anadromous ("estuary") and resident freshwater ("upstream") threespine sticklebacks (Gasterosteus aculeat...

journal_title：Oecologia

authors： Snyder RJ,Dingle H

更新日期：1990-10-01 00:00:00

abstract：:Anthropogenic nitrogen deposition and projected increases in rainfall variability (the frequency of drought and heavy rainfall events) are expected to strongly influence ecosystem processes such as litter decomposition. However, how these two global change factors interact to influence litter decomposition is largely ...

journal_title：Oecologia

authors： Schuster MJ

更新日期：2016-03-01 00:00:00

abstract：:Chronic atmospheric N deposition has modified relative N availability, altering the biogeochemical cycles of forests and the stoichiometry of nutrients in trees, inducing P limitation, and modifying the N:P ratios of plant biomass. This study examines how the variation in the foliar stoichiometry of Abies pinsapo acro...

journal_title：Oecologia

authors： Blanes MC,Viñegla B,Merino J,Carreira JA

更新日期：2013-04-01 00:00:00

abstract：:We investigated the effect of increased N-supply on productivity and potential litter decay rates of Carex species, which are the dominant vascular plant species in peatlands in the Netherlands. We hypothesized that: (1) under conditions of N-limited plant growth, increased N-supply will lead to increased productivity...

journal_title：Oecologia

authors： Aerts R,van Logtestijn R,van Staalduinen M,Toet S

更新日期：1995-12-01 00:00:00

abstract：:1 Intake of food, fat, protein and carbohydrates and their fecal output were recorded during the annual body weight cycle of the garden warbler, and old-world longdistance migratory bird species, and the efficiencies of food and nutrient utilization, defined as the ratio (intake-fecal output)/intake, were calculated. ...

journal_title：Oecologia

authors： Bairlein F

更新日期：1985-12-01 00:00:00

abstract：:Anthropogenic land use may shape vegetation composition and affect trophic interactions by altering concentrations of host plant metabolites. Here, we investigated the hypotheses that: (1) plant N and defensive secondary metabolite contents of the herb Plantago lanceolata are affected by land use intensity (LUI) and t...

journal_title：Oecologia

authors： Wäschke N,Hancock C,Hilker M,Obermaier E,Meiners T

更新日期：2015-09-01 00:00:00

abstract：:A number of feeding cues determine the palatability of detritus to detritivorous invertebrates. In salt marsh detritus the feeding cues include flavor provided by phenolics such as ferulic acid, pH, salinity, and nitrogen content. We examined the feeding responses to each cue by using experimental manipulations where ...

journal_title：Oecologia

authors： Valiela I,Rietsma CS

更新日期：1984-08-01 00:00:00

abstract：:I examined the effects of pollen loads containing pollen from one, three and five donors on fruit production and fruit quality in Campsis radicans. Number of pollen donors had no significant effect on % fruit production, seed number, seed weight or seed germination. In singledonor pollinations the identity of the dono...

journal_title：Oecologia

authors： Bertin RI

更新日期：1986-08-01 00:00:00

abstract：:Despite the increasing sophistication of ecological models with respect to the size and spatial arrangement of habitat, there is relatively little empirical documentation of how species dynamics change as a function of habitat size and the fraction of habitat occupied. In an assemblage of tidepool fishes, I used maxim...

journal_title：Oecologia

authors： Pfister CA

更新日期：1998-03-01 00:00:00

abstract：:Ground-nesting North American landbirds have declined in the longterm, including species with a variety of migratory strategies. The mesopredator release hypothesis explains declines by suggesting that the virtual elimination of top carnivores (large-bodied canids and felids) from much of North America has "released" ...

journal_title：Oecologia

authors： Rogers CM,Caro MJ

更新日期：1998-08-01 00:00:00

abstract：:The effects of caterpillar food supply on the breeding performance of a population of the Japanese great tit Parus major minor were investigated. Since more than 90% of the food items in our study site were caterpillars living on trees, we estimated the food availability using 20 frass traps per hectare. The sampling ...

journal_title：Oecologia

authors： Seki SI,Takano H

更新日期：1998-05-01 00:00:00

abstract：:Soil fauna can influence soil processes through interactions with the microbial community. Due to the complexity of the functional roles of fauna and their effects on microbes, little consensus has been reached on the extent to which soil fauna can regulate microbial activities. We quantified soil microbial biomass an...

journal_title：Oecologia

authors： González G,Ley RE,Schmidt SK,Zou X,Seastedt TR

更新日期：2001-08-01 00:00:00

abstract：:Many bumblebee species are declining at a rapid rate in the United Kingdom and elsewhere. This is commonly attributed to the decline in floral resources that has resulted from an intensification in farming practices. Here we assess growth of nests of the bumblebee, Bombus terrestris, in habitats providing different le...

journal_title：Oecologia

authors： Goulson D,Hughes W,Derwent L,Stout J

更新日期：2002-01-01 00:00:00

abstract：:Variation in body size (weight) is examined across the order Carnivora in relation to taxonomy (phylogeny), latitude, habitat, zonation, activity cycle, diet, prey size, and prey diversity. Significant differences in body weight are observed with respect to family membership. Some of these differences may be explained...

journal_title：Oecologia

authors： Gittleman JL

更新日期：1985-12-01 00:00:00

abstract：:To estimate the optimality of brood size, it is essential to study the effects of brood size manipulation on offspring survival and reproductive success. Moreover, testing the generality of the hypothesis of reproductive costs requires experimental data from a diversity of organisms. Here I present data on the growth,...

journal_title：Oecologia

authors： Koskela E

更新日期：1998-07-01 00:00:00

abstract：:Senecio vulgaris from ruderal habitats may colonise crop fields and persist in the new environment. Persistence may occur through phenotypic plasticity or genetic differentiation. In the presence of genetic variation, differential responses of life history traits to selection may lead to local adaptation. A reciprocal...

journal_title：Oecologia

authors： Leiss KA,Müller-Schärer H

更新日期：2001-07-01 00:00:00

abstract：:No-take marine reserves (NTMRs) provide hope that local carrying capacity may be partially restored if reserves are protected long enough. How long is long enough? We assess the duration of protection required for populations of large predatory reef fish in marine reserves to attain new steady states. We monitored bio...

journal_title：Oecologia

authors： Russ GR,Alcala AC

更新日期：2010-08-01 00:00:00

abstract：:As the Arctic warms, tundra vegetation is becoming taller and more structurally complex, as tall deciduous shrubs become increasingly dominant. Emerging studies reveal that shrubs exhibit photosynthetic resource partitioning, akin to forests, that may need accounting for in the "big leaf" net ecosystem exchange models...

journal_title：Oecologia

authors： Boelman NT,Magney TS,Logan BA,Griffin KL,Eitel JU,Greaves H,Prager CM,Vierling LA

更新日期：2016-09-01 00:00:00

abstract：:In the present study we investigated the economics of load transport in the grass-cutting ant Atta vollenweideri by focusing on the effects of load mass, width and length on individual transport rates. Both running speed of foragers and the amount of material transported a given distance per unit time, i.e. gross mate...

journal_title：Oecologia

authors： Röschard J,Roces F

更新日期：2002-04-01 00:00:00

abstract：:The aquatic larvae of two species of salamanders coexist as a result of differences in their competitive abilities: Ambystoma talpoideum is a superior aggressor, whereas A. maculatum is a superior forager. I examined the behavioral mechanisms that permit these species to coexist with their predatory congener, A. opacu...

journal_title：Oecologia

authors： Walls SC

更新日期：1995-01-01 00:00:00

abstract：:In a Danish heathland invasion of oak shrub has taken place, the succession rate being approximately 300 m during the last 100 years. The colonisation has occurred in steps related to the delay time between seedling stage and fertility stage. Seedlings are often found in clusters originating from caches probably made ...

journal_title：Oecologia

authors： Jensen TS,Nielsen OF

更新日期：1986-09-01 00:00:00