Impact of herbivory on flowering behaviour and life history trade-offs in a polycarpic herb: a 10-year experiment.

abstract：:1. It was clarified, by means of breeding experiments conducted within a temperature range of 14-34°C, if the growth of Pieris influenced by diurnally fluctuating temperatures depends on a simple additive influence of day-and-night-temperatures or if its growth is accelerated or retarded under these conditions by spec...

journal_title：Oecologia

authors： Neumann D,Heimbach F

更新日期：1975-06-01 00:00:00

abstract：:Understanding social evolution requires us to understand the processes regulating the number of breeders within social groups and how they partition reproduction. Queens in polygynous (multiple queens per colony) ants often seek adoption in established colonies instead of founding a new colony independently. This mode...

journal_title：Oecologia

authors： Holzer B,Chapuisat M,Keller L

更新日期：2008-10-01 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：:In this paper we test the influence of temperature and interference competition by dominant species on the foraging of subordinate species in Mediterranean ant communities. We have analyzed the changes in resource use by subordinate species in plots with different abundances of dominant ants, and in different periods ...

journal_title：Oecologia

authors： Cerdá X,Retana J,Manzaneda A

更新日期：1998-12-01 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：:Mediterranean evergreen forests of Corsica are characterized by relatively high species diversity of arthropods with low population densities. Food is never superabundant for Corsican blue tits Parus caeruleus. This study focused on the composition of the food of blue tit nestlings and especially on two main component...

journal_title：Oecologia

authors： Bańbura J,Blondel J,de Wilde-Lambrechts H,Galan MJ,Maistre M

更新日期：1994-12-01 00:00:00

abstract：:The degree of CAM-cycling was examined in plants from 23 populations representing five morphologically similar species of Talinum to determine how CAM-cycling correlates with site aridity and drought stress. In the field, CAM-cycling, as indicated by the amount of malic acid accumulated in plant tissues overnight, and...

journal_title：Oecologia

authors： Harris FS,Martin CE

更新日期：1991-05-01 00:00:00

abstract：:Corridors connect otherwise isolated habitat patches and can direct movement of animals among such patches. In eight experimental landscapes, we tested two hypotheses of how corridors might affect dispersal behavior. The Traditional Corridor hypothesis posits that animals preferentially leave patches via corridors, fo...

journal_title：Oecologia

authors： Fried JH,Levey DJ,Hogsette JA

更新日期：2005-05-01 00:00:00

abstract：:One of the most commonly cited hypotheses explaining invasion success is the enemy release hypothesis (ERH), which maintains that populations are regulated by coevolved natural enemies where they are native but are relieved of this pressure in the new range. However, the role of resident enemies in plant invasion rema...

journal_title：Oecologia

authors： Bohl Stricker K,Stiling P

更新日期：2014-03-01 00:00:00

abstract：:Heterotrophic gains of carbon from various host species by the root hemiparasitic shrub Olax phyllanthi (Labill) R.Br. were assessed using techniques based on carbon isotope discrimination (δ13C) on C3 and C4 hosts and C:N ratios of xylem sap and dry matter of host and parasite. Heterotrophic benefits (H) to Olax base...

journal_title：Oecologia

authors： Tennakoon KU,Pate JS

更新日期：1996-02-01 00:00:00

abstract：:Osmoderma eremita is a species of beetle that inhabits hollows in ancient trees, which is a habitat that has decreased significantly during the last century. In southeastern Sweden, we studied the metapopulation dynamics of this beetle over a 25 year period, using capture-mark-recapture. The metapopulation size had be...

journal_title：Oecologia

authors： Lindman L,Larsson MC,Mellbrand K,Svensson GP,Hedin J,Tranberg O,Ranius T

更新日期：2020-12-01 00:00:00

abstract：:The phytochemical action of Erica scoparia L. upon its environment was studied. The toxicity of biogenic heath products on red clover seedlings was demonstrated by biological tests. Ten phenolic hydrosoluble compounds were identified; p-Hydroxybenzoic, vanillic, syringic, caffeic, ferulic, p-coumaric, protocatechuic, ...

journal_title：Oecologia

authors： Ballester A,Albo JM,Vieitez E

更新日期：1977-03-01 00:00:00

abstract：:The ostracod Cyprideis torosa Jones, 1850 is a dominant species in the meiofauna of brackish water habitats. Its production in the field over a five-year period has been calculated using two production models. The first model uses the age-distribution of shells preserved in the sediment to assess the stage-specific mo...

journal_title：Oecologia

authors： Herman PM,Heip C,Vranken G

更新日期：1983-06-01 00:00:00

abstract：:Fluctuations in the abundance of main prey species might shape animal communities, by inducing numerical responses and dietary shifts in predators. Whether numerical responses and dietary shifts differ among individuals of different age and sex has so far gained little attention. These differences could affect how muc...

journal_title：Oecologia

authors： Masoero G,Laaksonen T,Morosinotto C,Korpimäki E

更新日期：2020-03-01 00:00:00

abstract：:A water flux model with daily resolution is described which permits one to assess how changes in the rooting volume, amount of sapwood, leaf area and conductance properties interact to affect water uptake, internal storage, and transpiration.A root zone water compartment is defined for a particular tree on the basis o...

journal_title：Oecologia

authors： Running SW,Waring RH,Rydell RA

更新日期：1975-03-01 00:00:00

abstract：:The physiological activity and C and N allocation of beech seedlings planted in two different beech forest soils (acid brown earth, rendzina) were studied over 80 days. One adult earthworm Octolasion lacteum (Örley) was placed in half of the containers. Transpiration, CO2, assimilation, chlorophyll synthesis and N inc...

journal_title：Oecologia

authors： Wolters V,Stickan W

更新日期：1991-09-01 00:00:00

abstract：:The population dynamics of snowshoe hares (Lepus americanus) are fundamental to the ecosystem dynamics of Canada's boreal forest. During the 8- to 11-year population cycle, hare densities can fluctuate up to 40-fold. Predators in this system (lynx, coyotes, great-horned owls) affect population numbers not only through...

journal_title：Oecologia

authors： Lavergne SG,McGowan PO,Krebs CJ,Boonstra R

更新日期：2014-11-01 00:00:00

abstract：:The tadpoles of two anuran species, Rana sylvatica and Xenopus laevis, were fed various concentrations of two algae, Anabaena sphaerica (large filaments) and Chlorella pyrenoidosa (small unicells). Filtering rates were measured indirectly with a Coulter Counter system; buccal pumping rates were observed directly.Exper...

journal_title：Oecologia

authors： Seale DB,Wassersug RJ

更新日期：1979-01-01 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：:We tested whether temperature-induced variation in the growth rate of Rana cascadae tadpoles caused any variation in head width or leg length at metamorphosis, independent of the effects of temperature on body size. Body-size-adjusted head width appears to be insensitive to even large variations in tadpole growth rate...

journal_title：Oecologia

authors： Blouin MS,Brown ST

更新日期：2000-11-01 00:00:00

abstract：:Environmentally controlled experiments on damping-off disease of garden cress (Lepidium sativum) caused by Pythium irregulare were used to study the effect of clumped planting patterns upon epidemic rates. In clumped stands of seedlings the rate of multiplication of disease was, in general, slower than in unclumped, e...

journal_title：Oecologia

authors： Burdon JJ,Chilvers GA

更新日期：1976-03-01 00:00:00

abstract：:Two atlantic voyages were made by the FS Meteor during which pollen and spores were collected from the air. In the course of 32 days the average pollen content was 29/100 m3 air, the average spore content came to 5x104/100 m3 air. Both voyages occurred in late autumn. On the trip from Hamburg to the Azores the spore c...

journal_title：Oecologia

authors： Stix E

更新日期：1975-09-01 00:00:00

abstract：:Relatively few published food webs have included parasites, and in this study we examined the animal community in a stream across eight contiguous seasons to test how inclusion of helminth parasites alters the topology or structure of the food web. Food webs constructed for each season and analyzed using common binary...

journal_title：Oecologia

authors： Hernandez AD,Sukhdeo MV

更新日期：2008-06-01 00:00:00

abstract：:CrowdedEpirrita larvae had shorter larval periods than, and similar pupal masses to, their solitary siblings when reared on low quality diets. When fed on high quality diets, pupal masses of crowded larvae were lower than in singletons, and there was no difference in larval period. Because changes in food availability...

journal_title：Oecologia

authors： Haukioja E,Pakarinen E,Niemelä P,Iso-Iivari L

更新日期：1988-05-01 00:00:00

abstract：:Nitrogen (N) deposition and climate are acknowledged drivers of change in biodiversity and ecosystem function at large scales. However, at a local scale, their impact on functions and community structure of organisms is filtered by drivers like habitat quality and food quality/availability. This study assesses the rel...

journal_title：Oecologia

authors： Mitchell RJ,Urpeth HM,Britton AJ,Black H,Taylor AR

更新日期：2016-11-01 00:00:00

abstract：:By analogy with deterministic stability, the stability of stochastic ecological systems can be viewed as a tendency for population densities to avoid dynamic boundaries (i.e. boundedness) or to approach a dynamic attractor (i.e. attraction). At the population level, these two views generate predictions consistent with...

journal_title：Oecologia

authors： Crowley PH

更新日期：1992-05-01 00:00:00

abstract：:To establish a general model for the removal rate of periphyton by grazers, we identified 27 publications in which removal rates could be estimated from grazer enclosure or exclosure experiments. When all the measurements obtained under different experimental conditions were extracted, these publications provided 107 ...

journal_title：Oecologia

authors： Cattaneo A,Mousseau B

更新日期：1995-08-01 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：:The impacts of disturbance on biodiversity and distributions have been studied in many systems. Yet, comparatively less is known about how lichens-obligate symbiotic organisms-respond to disturbance. Successful establishment and development of lichens require a minimum of two compatible yet usually unrelated species t...

journal_title：Oecologia

authors： Tripp EA,Lendemer JC,McCain CM

更新日期：2019-06-01 00:00:00

abstract：:Despite many studies highlighting the widespread occurrence and effects of resource movement between ecosystems, comparatively little is known about how anthropogenic alterations to ecosystems affect the strength, direction and importance of such fluxes. Hydrological regime and riparian land use cause well-documented ...

journal_title：Oecologia

authors： Greenwood MJ,Booker DJ

更新日期：2016-02-01 00:00:00