Experimental evidence for interactive habitat segregation between roach (Rutilus rutilus) and rudd (Scardinius erythrophthalmus) in a shallow eutrophic lake.

abstract：:Like many polyphagous herbivores, individuals of Sarasinula plebeia (Fischer) (Soleolifera: Veronicellidae) consume a variety of plant species that may differ in nutritional content. In this study we determined the ability of these slugs to compensate for such variation in diet composition. Dilution with water of an a...

journal_title：Oecologia

authors： Rueda AA,Slansky F Jr,Wheeler GS

更新日期：1991-10-01 00:00:00

abstract：:Stemflow inputs of magnesium and potassium were measured from 57 canopy trees representing eight species under heavy rainfall conditions in two tropical forest sites in northeast Queensland, Australia. In the premontane tropical moist forest site on the Atherton Tableland, the stemflow input per unit trunk basal area ...

journal_title：Oecologia

authors： Herwitz SR

更新日期：1986-10-01 00:00:00

abstract：:The acetylene reduction method was used to measure nitrogen fixation in the phyllosphere of attached leaves of different phorophytes under natural conditions in a premontane rain forest in Costa Rica. Maximum rates of nitrogen fixation (26 ng N · cm-2 leaf area · h-1) - mainly due to the activity of two species of Scy...

journal_title：Oecologia

authors： Freiberg E

更新日期：1998-11-01 00:00:00

abstract：:Life history theory predicts that migratory fishes should delay reproduction, be larger at first reproduction, and have higher fecundities than nonmigrants. We tested this hypothesis by comparing life histories of anadromous ("estuary") and resident freshwater ("upstream") threespine sticklebacks (Gasterosteus aculeat...

journal_title：Oecologia

authors： Snyder RJ,Dingle H

更新日期：1990-10-01 00:00:00

abstract：:Resource competition is commonly invoked to explain negative effects of invasive plants on native plant abundance. If invasives out-compete natives, global changes that elevate resource availability may interact with invasives to exacerbate impacts on native communities. Indeed, evidence is accumulating that elevated ...

journal_title：Oecologia

authors： Bradford MA,Schumacher HB,Catovsky S,Eggers T,Newingtion JE,Tordoff GM

更新日期：2007-07-01 00:00:00

abstract：:This paper describes the epiphytic lichen vegetation on maple trees along an 1.1-km avenue leading from the outer suburbs of Freiburg toward the city center. A special aim of this investigation was to examine the variation in the coverage by lichens altogether and by each lichen species as a function of increasing dis...

journal_title：Oecologia

authors： Wirth V,Brinckmann B

更新日期：1977-03-01 00:00:00

abstract：:We studied behavioral mechanisms underlying the spatial distribution of Euphydryas anicia (Lepidoptera: Nymphalidae) females searching for larval host plants on a flat plain in Colorado. The rate of female movement, as represented by an empirically estimated diffusion coefficient, is affected by two factors. First, wh...

journal_title：Oecologia

authors： Odendaal FJ,Turchin P,Stermitz FR

更新日期：1989-02-01 00:00:00

abstract：:The relationship between ichthyotoxicity and predation-related defensive functional morphology was examined in alcyonacean soft corals of the central and northern regions of the Great Barrier Reef (GBR), Australia. Approximately 170 specimens were assessed encompassing a number of genera within three families: 1) the ...

journal_title：Oecologia

authors： Sammarco PW,La Barre S,Coll JC

更新日期：1987-11-01 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：:We compared the parasitoid communities associated with grass-feeding herbivores in Germany and Britain to examine geographical consistency in community composition and to test ecological characteristics of the plants and host insects that may explain variability in parasitoid community structure. The parasitoid commun...

journal_title：Oecologia

authors： Tscharntke T,Vidal S,Hawkins BA

更新日期：2001-11-01 00:00:00

abstract：:Using data from three fires in northeastern Spain, we tested a condition necessary to support the idea that fire has been a factor in the evolution of the resprouting habit: populations of all resprouting species within a community should show high levels of genet survival after fires and show a low coefficient of var...

journal_title：Oecologia

authors： López-Soria L,Castell C

更新日期：1992-10-01 00:00:00

abstract：:The impact of predation by the robber fly Proctacanthus milbertii Macquart on populations of adult grasshoppers from grasslands of the Nebraska sandhills was estimated. Densities of P. milbertii were estimated at 437 individuals per hectare (2 se=122). Overall densities of 23 species of grasshoppers were estimated to ...

journal_title：Oecologia

authors： Joern A,Rudd NT

更新日期：1982-10-01 00:00:00

abstract：:Debate on the control of population dynamics in reef fishes has centred on whether patterns in abundance are determined by the supply of planktonic recruits, or by post-recruitment processes. Recruitment limitation implies little or no regulation of the reef-associated population, and is supported by several experimen...

journal_title：Oecologia

authors： Forrester GE

更新日期：1995-08-01 00:00:00

abstract：:A stage-by-stage protocol for identifying simple or biased lottery, or non-lottery, patterns of seedling recruitment is outlined. For a simple (weighted) lottery to apply, the proportion of total individuals accounted for by one species at one stage of recruitment plotted against the proportion accounted for at a prev...

journal_title：Oecologia

authors： Lamont BB,Witkowski ET

更新日期：1995-03-01 00:00:00

abstract：:Size-limited predation is an important process during the development of many aquatic species, and mortality rates of early larval stages and small individuals can be particularly high. Structurally complex habitats can mediate predator-prey interactions and provide a potentially important mechanism for decreasing pre...

journal_title：Oecologia

authors： Babbitt KJ,Tanner GW

更新日期：1998-04-01 00:00:00

abstract：:This study links summer foraging and scatter-hoarding to winter larder-hoarding and winter survival in yellow pine chipmunks (Tamias amoenus) by comparing patterns of time allocation and winter larder contents in 2 years with very different levels of resource availability. In 2003, seed production and the number of tr...

journal_title：Oecologia

authors： Kuhn KM,Vander Wall SB

更新日期：2008-08-01 00:00:00

abstract：:Calorific values for the vegetative tissues of a group of perennial desert and arid woodland plants ranged from 3,191 to 5,375 calories per gram, oven dry weight. These span the range of comparable values reported earlier for plants in other environments, and reflect variety in adaptations to dry environments. Tissues...

journal_title：Oecologia

authors： Darling MS

更新日期：1976-06-01 00:00:00

abstract：:Many studies have analysed plant responses to flooding or drought separately, without addressing the relations between plant resistance to each of these factors. In this paper, we compare the responses to drought and flooding under glasshouse conditions of three populations of Paspalum dilatatum, a perennial C4 grass ...

journal_title：Oecologia

authors： Loreti J,Oesterheld M

更新日期：1996-10-01 00:00:00

abstract：:Analyses of carbon-assimilation patterns in response to intercellular CO2 concentrations, and the photosynthetic water-and nitrogen-use efficiencies, were conducted for a C3, a C4, and three C3-C4 species in the genus Flaveria in order to determine some of the advantages and disadvantages of C3-C4 intermediate photosy...

journal_title：Oecologia

authors： Monson RK

更新日期：1989-08-01 00:00:00

abstract：:While elaborate carotenoid-based traits in adult birds may have evolved as honest signals of individual quality in the context of sexual selection or other social interactions, the function of carotenoid-based colours in juveniles is less well understood. We investigated the hypothesis that carotenoid-based nestling c...

journal_title：Oecologia

authors： Tschirren B,Fitze PS,Richner H

更新日期：2005-04-01 00:00:00

abstract：:At least once a year the mountain pine beetle searches for lodgepole pines that provide a suitable habitat for a new brood. After attacking females feed, they produce an attractant pheromone that causes beetles to aggregate and, during outbreaks, to usually mass attack the "focus" tree. Near the completion of mass att...

journal_title：Oecologia

authors： Geiszler DR,Gallucci VF,Gara RI

更新日期：1980-01-01 00:00:00

abstract：:Decomposition of standing dead trees that were killed by fire was examined for 10 species in the Great Smoky Mountains National Park. The decrease in wood density as fire age increased was used to estimate decomposition rates. Quercus prinus had the fastest decay rate (11% yr-1) while Pinus virginiana had the slowest ...

journal_title：Oecologia

authors： Harmon ME

更新日期：1982-02-01 00:00:00

abstract：:During five consecutive growing seasons (winters) ca. 110 plants of the desert geophyte Bellevalia desertorum were marked individually in a 25 m2 plot on a south-facing slope in the central Negev Desert of Israel. The number of rosette leaves of each plant was recorded, as well as whether it flowered and produced seed...

journal_title：Oecologia

authors： Boeken B

更新日期：1989-08-01 00:00:00

abstract：:We examined the demographic costs of Chaoborus-induced defensive spine structures in Daphnia pulex. Our aim was to assess the role of resource limitation and the interaction effects of limiting food level and antipredator structures on fitness of D. pulex and to pinpoint those life stages that are most sensitive to ch...

journal_title：Oecologia

authors： Walls M,Caswell H,Ketola M

更新日期：1991-06-01 00:00:00

abstract：:Eriophorum vaginatum is a characteristic species of northern peatlands and a keystone plant for cutover bog restoration. Understanding the factors affecting E. vaginatum seedling establishment (i.e. growth dynamics and allocation) under global change has practical implications for the management of abandoned mined bog...

journal_title：Oecologia

authors： Siegenthaler A,Buttler A,Grosvernier P,Gobat JM,Nilsson MB,Mitchell EA

更新日期：2013-02-01 00:00:00

abstract：:Stratospheric ozone depletion has caused ground-level ultraviolet-B (UV-B) radiation to rise in temperate latitudes of both hemispheres. Because the effects of enhanced UV-B radiation on the nutrition of food consumed by mammalian herbivores are unknown, we measured nutritional and chemical constituents of 18 forages ...

journal_title：Oecologia

authors： Thines NJ,Shipley LA,Bassman JH,Slusser JR,Gao W

更新日期：2008-05-01 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：:Not all hosts, communities or environments are equally hospitable for parasites. Direct and indirect interactions between parasites and their predators, competitors and the environment can influence variability in host exposure, susceptibility and subsequent infection, and these influences may vary across spatial scal...

journal_title：Oecologia

authors： Gehman AM,Grabowski JH,Hughes AR,Kimbro DL,Piehler MF,Byers JE

更新日期：2017-01-01 00:00:00

abstract：:Invasion of non-native annuals across the Intermountain West is causing a widespread transition from perennial sagebrush communities to fire-prone annual herbaceous communities and grasslands. To determine how this invasion affects ecosystem function, carbon and water fluxes were quantified in three, paired sagebrush ...

journal_title：Oecologia

authors： Prater MR,Obrist D,Arnone JA 3rd,DeLucia EH

更新日期：2006-01-01 00:00:00

abstract：:Spatiotemporal variation in the interactions among plants and animals is widespread; yet our conceptual and empirical understanding of this variation is limited to a few types of visitors, mainly herbivores, pollinators, seed predators, and seed dispersers. Despite the ubiquity of nectar robbing and the strength of it...

journal_title：Oecologia

authors： Irwin RE,Maloof JE

更新日期：2002-12-01 00:00:00