Regulation of leaf life-span and nutrient-use efficiency of Metrosideros polymorpha trees at two extremes of a long chronosequence in Hawaii.

abstract：:Regulation of seed germination phenology is an important aspect of the life history strategy of invading annual plant species. In the obligately selfing winter annual grass Bromus tectorum, seeds are at least conditionally dormant at dispersal in early summer and lose dormancy through dry-afterripening. Patterns of ge...

journal_title：Oecologia

authors： Meyer SE,Allen PS

更新日期：1999-07-01 00:00:00

abstract：:Populations of dioecious plant species often exhibit biased sex ratios. Such biases may arise as a result of sex-based differences in life history traits, or as a result of spatial segregation of the sexes. Of these, sex-based differentiation in life history traits is likely to be the most common cause of bias. In dio...

journal_title：Oecologia

authors： Nicotra AB

更新日期：1998-06-01 00:00:00

abstract：:The tenets of optimal foraging theory are used to contrast the behavior of the predatory snail Acantina spirata when feeding on the barnacles Balanus glandula and Chthamalus fissus under conditions of satiation and starvation. As predicted in optimal diet models, A. spirata is less selective (ratio of attack frequency...

journal_title：Oecologia

authors： Perry DM

更新日期：1987-06-01 00:00:00

abstract：:In previous papers we have described and verified a primary production model of the desert shrub Larrea tridentata. Here we address the validation phase of the evaluation of this model. Two versions of the model which differ in the priority scheme used for allocating carbon to reproductive or vegetative organs were co...

journal_title：Oecologia

authors： Reynolds JF,Cunningham GL

更新日期：1981-01-01 00:00:00

abstract：:A search for desiccation tolerant grasses in India revealed nine grass species (in the genera Eragrostiella, Oropetium and Tripogon) whose ability to recover from airdryness had not previously been reported. Dry leaves of these species recover uninjured within 24 h of plants receiving water. Desiccation tolerance limi...

journal_title：Oecologia

authors： Gaff DF,Bole PV

更新日期：1986-12-01 00:00:00

abstract：:Seeds dispersed by tropical, arboreal mammals are usually deposited singly and without dung or in clumps of fecal material. After dispersal through defecation by mammals, most seeds are secondarily dispersed by dung beetles or consumed by rodents. These post-dispersal, plant-animal interactions are likely to interact ...

journal_title：Oecologia

authors： Andresen E,Levey DJ

更新日期：2004-03-01 00:00:00

abstract：:To improve the understanding of how native plant diversity influences invasion, we examined how population and community diversity may directly and indirectly be related to invasion in a natural field setting. Due to the large impact of the dominant C(4) grass species (Andropogon gerardii) on invasion resistance of ta...

journal_title：Oecologia

authors： Chang CC,Smith MD

更新日期：2012-04-01 00:00:00

abstract：:Competition for water surface prey between fish (Priapichtus annectens: Poeciliidae) and water striders (Potamobates unidentatus: Gerridae) was studied in the laboratory and in pools in a small tropical stream. Laboratory experiments showed that fish depressed activity and foraging success of water striders. Large fis...

journal_title：Oecologia

authors： Englund G,Johansson F,Olsson TI

更新日期：1992-12-01 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：:After herbivore attack, plants launch a suite of direct and indirect defense responses that must be coordinated if plants are to realize a fitness benefit from these responses. Here we characterize the volatile emissions in the native tobacco plant, Nicotiana attenuata Torr. ex Wats., that are elicited by tobacco horn...

journal_title：Oecologia

authors： Halitschke R,Keßler A,Kahl J,Lorenz A,Baldwin IT

更新日期：2000-08-01 00:00:00

abstract：:Canada mayflower (Maianthemum canadense Desf.), a rhizomatous, perennial herb, was the subject of a 2-year field experiment that examined two factors potentially affecting fruit and seed production: pollen addition and ramet isolation. Ramets were either open pollinated or overpollinated by hand to supplement natural ...

journal_title：Oecologia

authors： Ganger MT

更新日期：1997-04-01 00:00:00

abstract：:Intraspecific variation in behavior and diet can have important consequences for population and ecosystem dynamics. Here, we examine how differences in reproductive investment and spatial ecology influence individual diet specialization in male and female southern sea otters (Enhydra lutris nereis). We hypothesize tha...

journal_title：Oecologia

authors： Smith EA,Newsome SD,Estes JA,Tinker MT

更新日期：2015-05-01 00:00:00

abstract：:This paper gives the first reports on aphid effects on rhizosphere organisms as influenced by soil nutrient status and plant development. Barley plants grown in pots fertilized with N but without P (N), with N and P (NP), or not fertilized (0) were sampled in the early growth phase (day 25), 1 week before and 1 week a...

journal_title：Oecologia

authors： Vestergård M,Bjørnlund L,Christensen S

更新日期：2004-09-01 00:00:00

abstract：:Herbivores can have strong deleterious effects on plant growth, reproduction, and even survival. Because these effects might be strongly interrelated, the direct consumptive effects of herbivores and a variety of indirect effects are difficult to untangle. Reductions in growth, for example, may strongly impact the flo...

journal_title：Oecologia

authors： Brys R,Shefferson RP,Jacquemyn H

更新日期：2011-06-01 00:00:00

abstract：:Predation pressure and resource availability often interact in structuring herbivore communities, with their relative influence varying in space and time. The operation of multiple ecological pressures and guild-specific herbivore responses may combine to override simple predictions of how the roles of plant quality a...

journal_title：Oecologia

authors： Zehnder CB,Stodola KW,Cooper RJ,Hunter MD

更新日期：2010-12-01 00:00:00

abstract：:The photosynthetic responses of a range of trebouxioid lichens were investigated to determine whether variations in net assimilation rates shown by populations of the same species collected from different habitats could be correlated with adjustments in carbon-concentrating mechanism (CCM) activity. The activity of a ...

journal_title：Oecologia

authors： Smith EC,Griffiths H

更新日期：1998-01-01 00:00:00

abstract：:This is the first in a series of papers on the growth, photosynthetic rate, water and nutrient relations, root distribution and mycorrhizal frequency of two Norway spruce forests at different stages of decline. One of the stands was composed of green trees only while the other included trees ranging in appearance from...

journal_title：Oecologia

authors： Oren R,Schulze E-,Werk KS,Meyer J,Schneider BU,Heilmeier H

更新日期：1988-02-01 00:00:00

abstract：:The responses of organisms to organic farming depend on the taxonomic group and landscape complexity. Following the intermediate landscape complexity hypothesis, organic farming can compensate for the lack of complexity in simple landscapes. Argentinian farmlands are simple with large fields and scarce linear habitat ...

journal_title：Oecologia

authors： Serafini VN,Coda JA,Contreras F,Conroy MJ,Gomez MD,Priotto JW

更新日期：2019-12-01 00:00:00

abstract：:We used a laboratory assay to partition the effects of predation and intraspecific competition on the establishment, mating success, and brood development of an endophytic herbivore. We selected a system in which the same predator feeds both exophytically and endophytically on the same prey, to evaluate the role of he...

journal_title：Oecologia

authors： Aukema BH,Raffa KF

更新日期：2002-12-01 00:00:00

abstract：:The importance of facilitative processes due to the presence of nitrogen-fixing legumes in temperate grasslands is a contentious issue in biodiversity experiments. Despite a multitude of studies of fertilization effects of legumes on associated nonfixers in agricultural systems, we know little about the dynamics in mo...

journal_title：Oecologia

authors： Temperton VM,Mwangi PN,Scherer-Lorenzen M,Schmid B,Buchmann N

更新日期：2007-03-01 00:00:00

abstract：:Optimal diet theory often fails to predict a forager's diet choice when prey are mobile. Because they escape or defend themselves, mobile prey are likely to increase the forager's handling time, thereby decreasing its fitness gain rate. Many animals have been shown to select their prey so as to maximize either their f...

journal_title：Oecologia

authors： Barrette M,Wu GM,Brodeur J,Giraldeau LA,Boivin G

更新日期：2009-01-01 00:00:00

abstract：:Myrmecophytic symbioses are widespread in tropical ecosystems and their diversity makes them useful tools for understanding the origin and evolution of mutualisms. Obligate ant-plants, or myrmecophytes, provide a nesting place, and, often, food to a limited number of plant-ant species. In exchange, plant-ants protect ...

journal_title：Oecologia

authors： Orivel J,Lambs L,Malé PJ,Leroy C,Grangier J,Otto T,Quilichini A,Dejean A

更新日期：2011-02-01 00:00:00

abstract：:General scaling rules or constants for metabolic and structural plant allometry as assumed by the theory of Euclidian geometric scaling (2/3-scaling) or metabolic scaling (3/4-scaling) may meet human's innate propensity for simplicity and generality of pattern and processes in nature. However, numerous empirical works...

journal_title：Oecologia

authors： Pretzsch H,Dieler J

更新日期：2012-07-01 00:00:00

abstract：:Leaves from several desert and woodland species, including gymnosperms and angiosperms with both C3 and C4 physiology, were analyzed to detect trends in δ13Cleaf with elevation and slope aspect along two transects in southeastern Utah and south-central New Mexico, USA. The main difference between the two transects is ...

journal_title：Oecologia

authors： Van de Water PK,Leavitt SW,Betancourt JL

更新日期：2002-08-01 00:00:00

abstract：:Data are presented on the influence of Athous subfuscus larvae (Coleoptera, Elateridae) on the microbial carbon cycle in the biotically most active horizons of three contrasting beech forest soils: the Ah horizon of a mull soil on limestone (Göttinger Wald, FRG), the F/H horizon of a moder soil on new red sandstone (S...

journal_title：Oecologia

authors： Wolters V

更新日期：1989-08-01 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：:Nutrient resorption, a process by which plants degrade organic compounds and resorb their nutrients from senescing tissues, is a crucial plant function to increase growth and fitness in nutrient-poor environments. Tropical trees on phosphorus (P)-poor soils are particularly known to have high P-resorption efficiency (...

journal_title：Oecologia

authors： Tsujii Y,Onoda Y,Kitayama K

更新日期：2017-10-01 00:00:00

abstract：:Plants are often attacked by many herbivorous insects and pathogens at the same time. Two important suites of responses to attack are mediated by plant hormones, jasmonate and salicylate, which independently provide resistance to herbivorous insects and pathogens, respectively. Several lines of evidence suggest that t...

journal_title：Oecologia

authors： Thaler JS,Karban R,Ullman DE,Boege K,Bostock RM

更新日期：2002-04-01 00:00:00

abstract：:At Bakers Hill, differential winter mortality of juvenile slowgrowing Amphibolurus ornatus is correlated with the incidence of frosts (Bradshaw, 1971). The present study shows that the probability an individual will spend the night in a refuge that is safe from the lethal effect of a frost is directly related to the i...

journal_title：Oecologia

authors： Baverstock PR

更新日期：1978-01-01 00:00:00

abstract：:Although predator avoidance has been proposed as one possible factor influencing the distribution of fish among substrate types, no study has addressed this question directly. Groups of juvenile Atlantic cod were offered a choice between pairs of the following three substrates: sand, gravel-pebble and cobble. Their di...

journal_title：Oecologia

authors： Gotceitas V,Brown JA

更新日期：1993-02-01 00:00:00