Transgenerational effects and the cost of ant tending in aphids.

abstract：:The time at which plants emerge from the soil is shown to be correlated with both survival and growth in each of four years in a plant community emerging after yearly plowing. For all seven species investigated, earlier emerging individuals generally had both a higher biomass and probability of survival. There were di...

journal_title：Oecologia

authors： Miller TE

更新日期：1987-05-01 00:00:00

abstract：:Six early successional plant species with differing photosynthetic pathways (3 C3 species and 3 C4 species) were grown at either 300, 600, or 1,200 ppm CO2 and at either 0.0 or 0.25 ppm SO2. Total plant growth increased with CO2 concentration for the C3 species and varied only slightly with CO2 for the C4 species. Fum...

journal_title：Oecologia

authors： Carlson RW,Bazzaz FA

更新日期：1982-01-01 00:00:00

abstract：:Differential predation pressure and the probability of predation on a Batesian mimicry complex and on alternative prey were estimatedin a field experiment. The mimicry complex was composed of a noxious model (Eleodes obscura (Say)) and a palatable mimic (Stenomorpha marginata (LeConte)). House crickets (Acheta domesti...

journal_title：Oecologia

authors： Hetz M,Slobodchikoff CN

更新日期：1988-09-01 00:00:00

abstract：:Microtus duodecimcostatus in a mediterranean vole which is not known to display spectacular increases in population numbers as in some microtine species. A population was studied in southern France with a capture-recapture method. The population included resident adults which have a high and constant survival rate (mo...

journal_title：Oecologia

authors： Paradis E,Guédon G

更新日期：1993-03-01 00:00:00

abstract：:Globally, dung beetles (Scarabaeidae: Scarabaeinae) are linked to many critical ecosystem processes involving the consumption and breakdown of mammal dung. Endemic New Zealand dung beetles (Canthonini) are an anomaly, occurring at high abundance and low diversity on an island archipelago historically lacking terrestri...

journal_title：Oecologia

authors： Stavert JR,Gaskett AC,Scott DJ,Beggs JR

更新日期：2014-09-01 00:00:00

abstract：:Phytoplankton abundance in tropical lakes is more often judged to be limited by nitrogen than phosphorus, but seldom does the evidence include controlled enrichments of natural populations. In January 1980 we performed the first experimental fertilization in an equatorial African soda lake, Lake Sonachi, a small, mero...

journal_title：Oecologia

authors： Melack JM,Kilham P,Fisher TR

更新日期：1982-01-01 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：:The late-glacial climatic oscillation, 12-10 ka BP, is characterised in ice core oxygen isotope profiles by a rapid and abrupt return to glacial climate. Recent work has shown that associated with this cooling was a drop in atmospheric CO2 concentration of ca. 50 ppm. In this paper, the impact of these environmental c...

journal_title：Oecologia

authors： Beerling DJ

更新日期：1996-10-01 00:00:00

abstract：:Seasonal excavations of ramet systems in overlapping natural populations of Typha latifolia and T. angustifolia revealed intrapopulation variation in ramet size and reproduction. Reproductive "states" were recognized based on whether or not a ramet had flowered and the number of offspring ramets it possessed. As the g...

journal_title：Oecologia

authors： Grace JB,Wetzel RG

更新日期：1982-01-01 00:00:00

abstract：:Declines in density of one natural, three artificially-seeded and eight experimental populations of Anadara granosa were monitored over periods ranging from seven to twelve months. For three of four large populations the decline in density has been adequately described by a model of the form N t=N 0·e zt where N t is ...

journal_title：Oecologia

authors： Broom MJ

更新日期：1983-06-01 00:00:00

abstract：:Animal-pollinated invasive species have frequently been demonstrated to outcompete native species for pollinator attention, which can have detrimental effects on the reproductive success and population dynamics of native species. Many animal-pollinated invasive species exhibit showy flowers and provide substantial rew...

journal_title：Oecologia

authors： Da Silva EM,King VM,Russell-Mercier JL,Sargent RD

更新日期：2013-06-01 00:00:00

abstract：:The spatial context in which seed predation occurs may modify the spatial structure of recruitment generated by seed dispersal. The Janzen-Connell (J-C) model predicts that granivores will exert greater pressure on the parent plant or at those sites where the density of dispersed seeds is higher. We have investigated ...

journal_title：Oecologia

authors： Blendinger PG,Díaz-Vélez MC

更新日期：2010-06-01 00:00:00

abstract：:Chemical cues that evoke anti-predator developmental changes have received considerable attention, but it is not known to what extent prey use information from the smell of predators and from cues released through digestion. We conducted an experiment to determine the importance of various types of cues for the adjust...

journal_title：Oecologia

authors： Hettyey A,Tóth Z,Thonhauser KE,Frommen JG,Penn DJ,Van Buskirk J

更新日期：2015-11-01 00:00:00

abstract：:Natural regeneration of abandoned farmland provides an important opportunity to contribute to global reforestation targets, including the Bonn Challenge. Of particular importance are the montane tropics, where a long history of farming, frequently on marginal soils, has rendered many ecosystems highly degraded and hot...

journal_title：Oecologia

authors： Hethcoat MG,King BJ,Castiblanco FF,Ortiz-Sepúlveda CM,Achiardi FCP,Edwards FA,Medina C,Gilroy JJ,Haugaasen T,Edwards DP

更新日期：2019-10-01 00:00:00

abstract：:Fluxes of CO2 and N2O were measured from both natural and experimentally augmented snowpacks during the winters of 1993 and 1994 on Niwot Ridge in the Colorado Front Range. Consistent snow cover insulated the soil surface from extreme air temperatures and allowed heterotrophic activity to continue through much of the ...

journal_title：Oecologia

authors： Brooks PD,Schmidt SK,Williams MW

更新日期：1997-04-01 00:00:00

abstract：:Only heavy insects and those that fly quickly can pass through a spider's web. When an insect is entangled in a web, permanent activity is the best way of getting free. Small wings are conducive to a successful escape, as is a special surface structure of the wings (scales, hairs, lipoid surface). The autotomy of legs...

journal_title：Oecologia

authors： Nentwig W

更新日期：1982-06-01 00:00:00

abstract：:Although insect herbivores have many well documented effects on plant performance, there are few studies that assess the impact of above-ground herbivory on below-ground plant growth. For a seven year period in which no large-scale herbivore outbreaks occurred, a broad spectrum insecticide was utilized to suppress her...

journal_title：Oecologia

authors： Cain ML,Carson WP,Root RB

更新日期：1991-10-01 00:00:00

abstract：:Nitrogen (N) losses constrain rates of plant carbon dioxide (CO2) uptake and storage in many ecosystems globally. N isotope models have been used to infer that ~30 % of terrestrial N losses occur via microbial denitrification; however, this approach assumes a small isotope effect associated with N leaching losses. Pas...

journal_title：Oecologia

authors： Mnich ME,Houlton BZ

更新日期：2016-06-01 00:00:00

abstract：:Relationships between leaf traits and the gap dependence for regeneration, and ontogenetic changes therein, were investigated in juvenile and adult tropical rainforest tree species. The juveniles of the 17 species included in the study were grown in high light, similar to the exposed crowns of the adult trees. The tra...

journal_title：Oecologia

authors： Houter NC,Pons TL

更新日期：2012-05-01 00:00:00

abstract：:During extensive field surveys in central and eastern Europe, 21 herbivorous root insect species were found on Centaurea maculosa ssp. rhenana Boreau, 12 species on C. diffusa Lam. and 11 species on C. vallesiaca Jordan, representing 12 families in 4 orders. The large geographic distribution (species-area function), t...

journal_title：Oecologia

authors： Müller H

更新日期：1989-01-01 00:00:00

abstract：:Experiments are described which test the hypothesis that more host-specific species of caterpillars should be less aceptable to a generalist predator than polyphagous species. Caterpillars of all species were tested in paired choice tests with the Argentine ant, Iridomyrmex humilis. Experiments were replicated ten tim...

journal_title：Oecologia

authors： Bernays EA,Cornelius ML

更新日期：1989-05-01 00:00:00

abstract：:Climate plays a fundamental role in limiting the range of a species, is a key factor in the dynamics of large herbivores, and is thought to be involved in declines of moose populations in recent decades. We examined effects of climate and growing-season phenology on recruitment (8-9 months old) of young Shiras moose (...

journal_title：Oecologia

authors： Monteith KL,Klaver RW,Hersey KR,Holland AA,Thomas TP,Kauffman MJ

更新日期：2015-08-01 00:00:00

abstract：:Dormancy is a common way in which organisms survive environmental conditions that would be lethal to the active individual. However, while dormant, individuals forego reproduction. Hence theory suggests an optimal time in which to enter dormancy, depending on risks associated with both remaining active and entering do...

journal_title：Oecologia

authors： Cáceres CE,Tessier AJ

更新日期：2004-11-01 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：:Enemy release often is invoked to explain the success of invasive plants: an invader benefits from reduced attack as it escapes specialized enemies through the invasion process. Enemy release typically is thought of as occurring at large geographic scales, but local-scale interactions may also be important for invader...

journal_title：Oecologia

authors： Nunes KA,Kotanen PM

更新日期：2018-09-01 00:00:00

abstract：:Although cascading effects of top predators can help structure communities, their influence may vary across habitats that differentially protect prey. Therefore, to understand how and to what degree habitat complexity can affect trophic interactions in adjacent habitats, we used a combination of a broad regional-scale...

journal_title：Oecologia

authors： Byers JE,Holmes ZC,Malek JC

更新日期：2017-09-01 00:00:00

abstract：:In a typical Dutch polder landscape the effects of nutrient transport from cultivated grassland to mesotrophic fen communities were studied. In a comparative approach, biomass production and nutrient (N, P and K) uptake were determined monthly in four fens and a hayfield differeing in productivity and species composit...

journal_title：Oecologia

authors： Verhoeven JT,van Beek S,Dekker M,Storm W

更新日期：1983-10-01 00:00:00

abstract：:Individuals of the collembolan species Tomocerus flavescens from a beech wood on limestone near Göttingen (West Germany) were fed with C-14-labelled algae in the laboratory. On an average, T. flavescens exchanged almost all of its endogenous carbon after 3.4 moults. In periods of starvation the interval between two ec...

journal_title：Oecologia

authors： Wolters V

更新日期：1985-01-01 00:00:00

abstract：:Plants of Dudleya blochmanae were studied over a growing season (December-June) in their native habitat on the central California coast. During the season soil water potential fluctuatdd widely, becoming unmeasurably negative (<-5.0 MPa) by early May. In contrast, leaf water potential did not fluctuate greatly with th...

journal_title：Oecologia

authors： Teeri JA

更新日期：1984-09-01 00:00:00

abstract：:Branch sampling of branch diameter and fruit crop on 22 species of Barbadian trees and shrubs provided sufficient data to build regressions between plant size and fruit crop weight. Orchard plants bear much more fruit than wild, feral or garden plants of similar size, but this difference disappears in multiple regress...

journal_title：Oecologia

authors： Peters RH,Cloutier S,Dubé D,Evans A,Hastings P,Kaiser H,Kohn D,Sarwer-Foner B

更新日期：1988-01-01 00:00:00