The dispersal rate of a beetle, Osmoderma eremita, living in tree hollows.

abstract：:Anuran amphibians have traditionally been considered suitable model organisms for community ecology studies. In this paper, we review and quantitatively re-analyze the original studies published on dietary relationships among anuran communities worldwide. We re-analyzed 33 independent communities from all continents, ...

journal_title：Oecologia

authors： Vignoli L,Luiselli L

更新日期：2012-06-01 00:00:00

abstract：:Models incorporating the energetics of individual daphnids (Cladocera) have been developed to predict the effect of environmental variables, particularly food availability, on population dynamics. One of them, that of Kooijman (1986), assumes that all assimilated energy enters a storage compartment prior to use in pro...

journal_title：Oecologia

authors： Bradley MC,Perrin N,Calow P

更新日期：1991-05-01 00:00:00

abstract：:Effects of herbicides (Garlone 3A, MCPA, 2,4-D and Krenite) and nitrogen fertilizer (NH4NO3), commonly used in Swedish forestry, on nitrogen fixation (C2H2-reduction) by Peltigera praetextata (Sommerf.) Zopf. (field and laboratory) and its phycobiont Nostoc sp. (laboratory) were studied. The alga was affected by the h...

journal_title：Oecologia

authors： Hällbom L,Bergman B

更新日期：1979-01-01 00:00:00

abstract：:Many animals have seasonally plastic diets to take advantage of seasonally abundant plant resources, such as fruit or nectar. Switches from insectivorous diets that are protein rich to fruits or nectar that are carbohydrate rich present physiological challenges, but are routinely done by insectivorous songbirds during...

journal_title：Oecologia

authors： Frick WF,Shipley JR,Kelly JF,Heady PA 3rd,Kay KM

更新日期：2014-01-01 00:00:00

abstract：:Principal and reduced major axes, and Bulmer's (1975) tests have been suggested as methods for detecting the presence of density dependence in a series of population censuses that are unsuitable for analysis by alternative means e.g. by k-factor analysis. These alternative methods are tested using census data, some of...

journal_title：Oecologia

authors： Gaston KJ,Lawton JH

更新日期：1987-12-01 00:00:00

abstract：:A model is presented that simulates nitrogen uptake and response to nitrogen deficiency by a growing annual plant canopy. It is a descriptive model as it is not based on a detailed definition of the biochemical processes involved. It does incorporate a considerable amount of experimental knowledge about these processe...

journal_title：Oecologia

authors： Seligman NG,van Keulen H,Goudriaan J

更新日期：1975-09-01 00:00:00

abstract：:The energy turnover of weevil populations ofPhyllobius argentatus L.,Polydrosus undatus F., andStrophosomus sp. was investigated in a 123 years old (1970) beech forest in special consideration of their soil-living rhizophagous larvae (results of the energy turnover ofStrophosomus sp. imagines, see Grimm, 1973). I. Lif...

journal_title：Oecologia

authors： Schauermann J

更新日期：1973-12-01 00:00:00

abstract：:Larger nymphs within aquatic insect taxa have been frequently observed to be transported down-stream in the stream drift only at night. Others have hypothesized this pattern results primarily from large nymphs' behavioural avoidance of entering drift during daylight, when size-selective, visually-feeding fish predator...

journal_title：Oecologia

authors： Poff NL,DeCino RD,Ward JV

更新日期：1991-12-01 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：:Difficulties in using genetic markers to demonstrate that changes in gene frequency cause fluctuations in the density of animal populations are illustrated. The frequency of chicks with light-coloured down increased during 4 years when population density of red grouse declined and the inherent level of aggressive beha...

journal_title：Oecologia

authors： Moss R,Watson A

更新日期：1987-10-01 00:00:00

abstract：:Occurrence and diet of ten carnivorous predators (four falconiforms, four owls, and two foxes), and population levels of their mammalian prey, were monitored over 45 months at a semi-arid site in north-central Chile. Early in this period, small mammals irrupted and then declined markedly to a density 7% of that at pea...

journal_title：Oecologia

authors： Jaksié FM,Jiménez JE,Castro SA,Feinsinger P

更新日期：1992-01-01 00:00:00

abstract：:Locomotory efficiency and potential has been studied in three species of the waterboatman Notonecta in relation to the predation strategies of these bugs.Morphometric analysis, estimating likely relative drag forces, mechanical advantages of the swimming legs and leg length/body length ratios allowed an estimation of ...

journal_title：Oecologia

authors： Giller PS

更新日期：1982-02-01 00:00:00

abstract：:A 9-year study of the structure of assemblages of fish on 20 coral patch reefs, based on 20 non-manipulative censuses, revealed a total of 141 species from 34 families, although 40 species accounted for over 95% of sightings of fish. The average patch reef was 8.5 m2 in surface area, and supported 125 fish of 20 speci...

journal_title：Oecologia

authors： Sale PF,Guy JA,Steel WJ

更新日期：1994-06-01 00:00:00

abstract：:The responses to drought of the solar tracking winter annualLupinus arizonicus (Wats.) were examined under field and laboratory growth regimes. Under drought conditions tracking movements were maintained until the plant reached the wilting point. The leaves and leaflets were observed to cup in response to decreases in...

journal_title：Oecologia

authors： Forseth I,Ehleringer JR

更新日期：1980-01-01 00:00:00

abstract：:Concentration and isotopic composition (δ13C and δ18O) of ambient CO2 and water vapour were determined within a Quercus petraea canopy, Northumberland, UK. From continuous measurements made across a 36-h period from three heights within the forest canopy, we generated mixing lines (Keeling plots) for δa13CO2, δa C18O1...

journal_title：Oecologia

authors： Harwood KG,Gillon JS,Roberts A,Griffiths H

更新日期：1999-04-01 00:00:00

abstract：:Dissection of 1,941 specimens provided data on reproductive cycles in six genera of skinks and three genera of agamids from the Alligator Rivers Region of Australia's Northern Territory. Comparative data on lizards from the temperate zone were gathered by dissecting specimens of three genera, and by reviewing publishe...

journal_title：Oecologia

authors： James C,Shine R

更新日期：1985-12-01 00:00:00

abstract：:No definitive explanation for the form of the relationship between species diversity and ecosystem productivity exists nor is there agreement on the mechanisms linking diversity and productivity across scales. Here, we examine changes in the form of the diversity-productivity relationship within and across the plant c...

journal_title：Oecologia

authors： Jennings MD,Williams JW,Stromberg MR

更新日期：2005-05-01 00:00:00

abstract：:Many ecological studies rely heavily on chemical analysis of plant and animal tissues. Often, there is limited time and money to perform all the required analyses and this can result in less than ideal sampling schemes and poor levels of replication. Near infrared reflectance spectroscopy (NIRS) can relieve these cons...

journal_title：Oecologia

authors： Foley WJ,McIlwee A,Lawler I,Aragones L,Woolnough AP,Berding N

更新日期：1998-09-01 00:00:00

abstract：:Prey subsidies originating from detritus add nutrients and energy to arboreal communities. Measurement of this subsidy is required in the understanding of how food web dynamics respond to changes in surrounding environments. Shrub spiders are one of the key predators involved in food web coupling. We evaluate the effe...

journal_title：Oecologia

authors： Haraguchi TF,Uchida M,Shibata Y,Tayasu I

更新日期：2013-04-01 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：:Inoculation with arbuscular mycorrhizal (AM) fungi is known to increase the species diversity of plant communities. One mechanism that can increase the likelihood of species co-existence, and thus species diversity, is a trade-off between competitive ability and the magnitude of plant growth response to AM fungal inoc...

journal_title：Oecologia

authors： Stanescu S,Maherali H

更新日期：2017-02-01 00:00:00

abstract：:Exposure to enhanced levels of ambient ultraviolet (UV) radiation (UVR) can have adverse effects on aquatic organisms including damage at the cellular and molecular level and impairment of development, fecundity and survival. Much research has been conducted on the role of the harmful UVB radiation. However, due to it...

journal_title：Oecologia

authors： Rick IP,Mehlis M,Eßer E,Bakker TC

更新日期：2014-02-01 00:00:00

abstract：:External hyphae of vesicular-arbuscular mycorrhizal (VAM) fungi were quantified over a growing season in a reconstructed tallgrass prairie and an ungrazed cool-season pasture. In both sites, hyphal lengths increased throughout the growing season. Peak external hyphal lengths were 111 m cm-3 of soil in the prairie and ...

journal_title：Oecologia

authors： Miller RM,Jastrow JD,Reinhardt DR

更新日期：1995-07-01 00:00:00

abstract：:Pea aphids have several alternative responses to the detection of alarm pheromone produced by conspecifics. One of these, dropping from the feeding site to the ground, is potentially costly owing to the risk of desiccation-induced mortality on the ground before another host plant can be reached. Both dropping and walk...

journal_title：Oecologia

authors： Dill LM,Fraser AH,Roitberg BD

更新日期：1990-07-01 00:00:00

abstract：:The effects on plant growth and stomatal physiology of alterations in light quantity and quality during development were investigated in the C3 monocot, Commelina communis. Reduction in light intensity resulted in decreased branching and stem elongation, with effects more severe under "neutral shade" (R:FR≥1.0) than u...

journal_title：Oecologia

authors： Assmann SM

更新日期：1992-11-01 00:00:00

abstract：:Consumers do not always utilize all suitable hosts. Understanding why parasitic plants do not always parasitize potentially suitable hosts requires a better understanding of the constraints that limit host use by parasitic plants. In Texas salt marshes, the parasitic plant Cuscuta indecora rarely parasitizes three hos...

journal_title：Oecologia

authors： Marquardt ES,Pennings SC

更新日期：2010-09-01 00:00:00

abstract：:Cosmopolitan species of cellular slime molds occur continents apart in both tropical and temperate zones of the world though the spore masses are too heavy to be wind borne, and water dispersal is limited to the watercourses. A highly mobile distribution vector was found in ground-feeding migratory song birds. Nine ub...

journal_title：Oecologia

authors： Suthers HB

更新日期：1985-03-01 00:00:00

abstract：:The effects of floral morphology on rates of pollen removal and deposition by different pollinators in generalist plant species are not well known. We studied pollination dynamics in wild radish, Raphanus raphanistrum, a plant visited by four groups of pollinators: honey bees, small native bees, butterflies, and syrph...

journal_title：Oecologia

authors： Conner JK,Davis R,Rush S

更新日期：1995-10-01 00:00:00

abstract：:The percent of species of the Cyperaceae possessing the C4 pathway was calculated for twenty-five regions of North America. A stepwise multiple regression analysis was used to determine which climatic variables were most highly correlated with the percent C4 species among the various regions. The square of the mean Ju...

journal_title：Oecologia

authors： Teeri JA,Livingstone DA

更新日期：1980-12-01 00:00:00

abstract：:We examined how different exploratory behavioral types of largemouth bass responded to differing prey communities by determining effects on growth, survival and diet in experimental ponds. We found evidence that non-explorer largemouth bass target young-of-year bluegill early on in life, but bluegill were not an impor...

journal_title：Oecologia

authors： Nannini MA,Wahl DH

更新日期：2016-10-01 00:00:00