Effects of reproductive resource supplementation on space-use patterns in Dendrobates pumilio.

abstract：:11 fruit fly species captured at 47 sites in a natural forest area at Cooloola (south-east Queensland) revealed specific patterns of spatial abundance. Although all species were collected throughout the study area, D. bryoniae, D. mayi, D. neohumeralis and D. tryoni were more prevalent (average number caught per trap)...

journal_title：Oecologia

authors： Zalucki MP,Drew RA,Hooper GH

更新日期：1984-10-01 00:00:00

abstract：:There is considerable variation in cannibalism between different species and also between individuals of different species, although relatively little is known about what creates this variation. We investigated the degree of cannibalism in guppy (Poecilia reticulata) populations originating from high and low predation...

journal_title：Oecologia

authors： Nilsson KA,Lundbäck S,Postavnicheva-Harri A,Persson L

更新日期：2011-10-01 00:00:00

abstract：:A reanalysis of data presented by Henneman (1983) to examine the relationship between intrinsic rate of increase and basal metabolism suggests there is no statistically significant correlation between the two variables when both are treated with comparable statistical techniques. In addition, I suggest there is no the...

journal_title：Oecologia

authors： Hayssen V

更新日期：1984-11-01 00:00:00

abstract：:Prey intake and selection were related to within-shoal position for Atlantic cod (Gadus morhua) engaged in annual migration across the Newfoundland shelf in the northwest Atlantic. Comparisons made among fish occupying five regions from the front to rear of a large (>10 km across) migrating shoal indicated that leadin...

journal_title：Oecologia

authors： DeBlois EM,Rose GA

更新日期：1996-10-01 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：:Size thresholds commonly underlie the induction of alternative morphological states. However, the respective importance of absolute and relative size to such thresholds remains uncertain. If absolute size governs expression, morph frequency should differ among environments that influence absolute sizes (e.g. resources...

journal_title：Oecologia

authors： Moore MP,Pechmann JHK,Whiteman HH

更新日期：2020-08-01 00:00:00

abstract：:Floral visitors vary in their pollination efficiency and their preferences for floral traits. If low-efficiency pollinators decrease the amount of pollen available to higher efficiency visitors, then low-efficiency visitors may actually have negative fitness consequences for the plants that they visit. We used experim...

journal_title：Oecologia

authors： Lau JA,Galloway LF

更新日期：2004-12-01 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：: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：:A laboratory experiment was conducted to determine whether the sea star Asterias forbesi and the naticid gastropod Euspira heros feed on surfclams, Spisula solidissima, in an additive or non-additive manner. Predators were allowed to feed on clams with conspecifics and in the presence of the other predator species. Cl...

journal_title：Oecologia

authors： Weissberger EJ

更新日期：1999-05-01 00:00:00

abstract：:In mutualistic interactions, partners obtain a net benefit, but there may also be costs associated with the provision of benefits for a partner. The question of whether aphids suffer such costs when attended by ants has been raised in previous work. Transgenerational effects, where offspring phenotypes are adjusted ba...

journal_title：Oecologia

authors： Tegelaar K,Glinwood R,Pettersson J,Leimar O

更新日期：2013-11-01 00:00:00

abstract：:This paper discusses the interactions among prefire shrub abundance, soil moisture, and plant and animal species on postfire seedling establishment in mixed chparral in southern California. Postfire germination and survival of seedlings in a stand dominated by a facultative seeder (Adenostoma fasciculatum) and by an o...

journal_title：Oecologia

authors： Moreno JM,Oechel WC

更新日期：1992-04-01 00:00:00

abstract：:We report the recovery of root nodules from P. glandulosa var. glandulosa in the eastern portion of its range, where the species reaches its greatest vegetational development. Single cores 4.7 cm in diameter and up to 250 cm deep yielded from 0 to over 250 nodules. Nodules were found at all depths below 10 cm, with th...

journal_title：Oecologia

authors： Johnson HB,Mayeux HS Jr

更新日期：1990-09-01 00:00:00

abstract：: Field phenologies of high- (ca. 1500 m) and low- (ca. 500 m) altitude populations of the two most common European species of dung flies, Scathophaga stercoraria and Sepsis cynipsea, differ quite markedly due to differences in climate. To differentiate genetic adaptation due to natural selection and phenotypic plastic...

journal_title：Oecologia

authors： Blanckenhorn WU

更新日期：1997-02-01 00:00:00

abstract：:Several studies published over the last years suggest that the ability of many species to cope with global change will be closely related to the current amount of plasticity for fitness-related traits. Thus, disentangling general patterns in phenotypic flexibility, which could be then included in models aimed to predi...

journal_title：Oecologia

authors： Aguilar-Kirigin ÁJ,Naya DE

更新日期：2013-11-01 00:00:00

abstract：:In tropical dry forests, a high interspecific variation in the strategies of fruiting phenology has been documented. Therefore, phenological responses may be mediated by influence of environmental variables, functional plant attributes or phylogenetic inertia. During 2 years, we recorded the fruiting phenology of 151 ...

journal_title：Oecologia

authors： Cortés-Flores J,Cornejo-Tenorio G,Urrea-Galeano LA,Andresen E,González-Rodríguez A,Ibarra-Manríquez G

更新日期：2019-01-01 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：:There is no correlation between protein-precipitating capacity and either total phenolic or proanthocyanidin content of extracts of mature foliage from six species of oaks: Quercus alba (white oak), Q. bicolor (swamp white oak), Q. macrocarpa (bur oak), Q. palustris (pin oak), Q. rubra (red oak), and Q. velutina (blac...

journal_title：Oecologia

authors： Martin JS,Martin MM

更新日期：1982-08-01 00:00:00

abstract：:Both phenotypic and genetic quality can influence the survival of individuals through time, although their relative influences are rarely addressed simultaneously. Here we used capture-mark-recapture modelling to assess the influence of both multilocus heterozygosity (MLH) and body size on apparent adult survival in a...

journal_title：Oecologia

authors： Cézilly F,Quinard A,Motreuil S,Pradel R

更新日期：2016-01-01 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：:In five California evergreen trees and shrubs cooccurring in this study but most common in habitats of different moisture availability, leaf nitrogen was a major determinant of photosynthetic capacity. Within each species, stomatal conductance was highly correlated with photosynthetic capacity, resulting in little var...

journal_title：Oecologia

authors： Field C,Merino J,Mooney HA

更新日期：1983-12-01 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：:During unusually wet years the salinity of the Great Salt Lake (Utah) decreased from above 100 g/L to 50 g/L. This allowed the predaceous insect Trichocorixa verticalis to invade the pelagic region of the lake and reach a mean summer density of 52/m3. Concurrent changes in the pelagic ecosystem were: a decrease in the...

journal_title：Oecologia

authors： Wurtsbaugh WA

更新日期：1992-02-01 00:00:00

abstract：:Spatial and temporal niche differentiation are potential mechanisms of plant species' coexistence in many communities, including many grasslands. In a 6-year field experiment, a dominant prairie bunchgrass, Schizachyrium scoparium, excluded species sharing similar phenology and rooting depth, but coexisted with specie...

journal_title：Oecologia

authors： Fargione J,Tilman D

更新日期：2005-05-01 00:00:00

abstract：:This study investigated seasonal variation in the origin of water used by plants in a riparian tropical rainforest community and explored linkages between plant water source, plant xylem hydraulic conductivity and response to the onset of dry conditions. The study focused on five co-dominant canopy species, comprising...

journal_title：Oecologia

authors： Drake PL,Franks PJ

更新日期：2003-11-01 00:00:00

abstract：:Resource supply and pollen delivery are often thought to equally limit seed production in animal-pollinated plants. At equilibrium, plants should show no response to experimental pollen supplementation because resources limit seed set above the current level of pollen attraction, while experimental reduction in pollen...

journal_title：Oecologia

authors： Ornelas JF,Lara C

更新日期：2009-07-01 00:00:00

abstract：:Habitat fragmentation modifies ecological patterns and processes through changes in species richness and abundance. In the coastal Maulino forest, central Chile, both species richness and abundance of insectivorous birds increases in forest fragments compared to continuous forest. Through a field experiment, we examin...

journal_title：Oecologia

authors： González-Gómez PL,Estades CF,Simonetti JA

更新日期：2006-05-01 00:00:00

abstract：:An automated, fiber optic point quadrat system for vegetation sampling is described. Because the effective point diameter of this system never exceeds 25 μm it minimizes the substantial errors which can arise with conventional point quadrats. Automatic contact detection eliminates operator subjectivity, and permits wo...

journal_title：Oecologia

authors： Caldwell MM,Harris GW,Dzurec RS

更新日期：1983-09-01 00:00:00

abstract：:Herbivory can reduce plant fitness, and its effects can be increased by competition. Though numerous studies have examined the joint effects of herbivores and competitors on plant performance, these interactive effects are seldom considered in the context of plant invasions. Here, we examined variation in plant perfor...

journal_title：Oecologia

authors： Huang W,Carrillo J,Ding J,Siemann E

更新日期：2012-10-01 00:00:00

abstract：:The photosynthetic incorporation of H14CO3- by the alga Platymonas subcordiformis decreased with increasing concentrations of NaCl in the medium. There was no correlation between the response of P. subcordiformis to salinity in high or low NaCl-concentrations in the growing solution. When other osmotic substances were...

journal_title：Oecologia

authors： Kirst GO

更新日期：1975-09-01 00:00:00