Spatial variation in parasite-induced mortality in an amphipod: shore height versus exposure history.

abstract：:The random-mixing assumptions of many parasite-transmission models are challenged if healthy individuals can alter their behaviour to reduce their risk of infection. Some pathogens reduce the attractiveness of their hosts' excretions, for example, potentially altering contact rates and thus the predicted force of infe...

journal_title：Oecologia

authors： Hughes NK,Helsen S,Tersago K,Leirs H

更新日期：2014-12-01 00:00:00

abstract：:We determined the effects of defoliation by a graminivorous grasshopper on the foliage quality of the C3 plant, western wheatgrass (Pascopyrum smithii [Rydb] A. Love). Additionally, we determined the effects of this defoliation upon the subsequent feeding of the graminivorous grasshopper Phoetaliotes nebrascensis Thom...

journal_title：Oecologia

authors： Redak RA,Capinera JL

更新日期：1994-11-01 00:00:00

abstract：:Ecological traits that reflect movement potential are often used as proxies for measured dispersal distances. Whether such traits reflect actual dispersal is often untested. Such tests are important because maximum dispersal distances may not be achieved and many dispersal events may be unsuccessful (without reproduct...

journal_title：Oecologia

authors： Lancaster J,Downes BJ

更新日期：2017-05-01 00:00:00

abstract：:When heterospecific seabirds are part of a nesting colony, there may be less opportunity for conspecifics to come in direct contact with each other, resulting in lower intraspecific aggressiveness. To determine if individuals spend less time in aggressive behavior when nesting in conspecific rather than heterospecific...

journal_title：Oecologia

authors： Pius SM,Leberg PL

更新日期：1997-06-01 00:00:00

abstract：:The fate of individual plants of Helianthus annuus was monitored in populations sown at a density of 650 seeds m-2. Ninety six percent of the seeds germinated but only fifty two percent of the seedlings survived to the end of the experiment due to self-thinning. Whilst the seedlings emerged over only four days the cot...

journal_title：Oecologia

authors： Watkinson AR,Lonsdale WM,Firbank LG

更新日期：1983-02-01 00:00:00

abstract：:CO2 assimilation in relation to light intensity and the relationship between leaf nitrogen and phosphorus concentrations and CO2 assimilation in 14 species of ecologically important Zimbabwean trees were examined. Eight of the species are members of the Fabaceae (Leguminosae). In the majority of Zimbabwean climax wood...

journal_title：Oecologia

authors： Tuohy JM,Prior JA,Stewart GR

更新日期：1991-11-01 00:00:00

abstract：:Environmental filtering and niche differentiation are processes proposed to drive community assembly, generating nonrandom patterns in community trait distributions. Despite the substantial intraspecific trait variation present in plant communities, most previous studies of trait-based community assembly have used spe...

journal_title：Oecologia

authors： Siefert A

更新日期：2012-11-01 00:00:00

abstract：:Studies relating reproduction to food availability are usually restricted to food quantity, but ignore food quality and the effects of habitat structure on obtaining the food. This is particularly true for insectivorous birds. In this study we relate measures of reproductive success, time of reproduction and nestling ...

journal_title：Oecologia

authors： Brodmann PA,Reyer HU,Bollmann K,Schläpfer AR,Rauter C

更新日期：1997-01-01 00:00:00

abstract：:Breeding ecology and mating patterns of the western toad, Bufo boreas, were examined in three large explosively breeding populations in the Oregon Cascade Mountains. Two mating patterns occurred variably within and among the three populations. First, a large male mating advantage was observed in two of the three popul...

journal_title：Oecologia

authors： Olson DH,Blaustein AR,O'Hara RK

更新日期：1986-10-01 00:00:00

abstract：:Differences in the density of conspecific tree individuals in response to environmental gradients are well documented for many tree species, but how such density differences are generated and maintained is poorly understood. We examined the segregation of six dipterocarp species among three soil types in the Pasoh tro...

journal_title：Oecologia

authors： Yamada T,Yamada Y,Okuda T,Fletcher C

更新日期：2013-07-01 00:00:00

abstract：:The effect of processing of beech leaf litter (Fagus sylvatica L.) of different ages by the diplopodGlomeris marginata (Villers) on status and turnover of microorganisms was investigated in the laboratory. Microbial biomass, basal respiration and metabolic quotient of litter-material from three different beechwood sit...

journal_title：Oecologia

authors： Maraun M,Scheu S

更新日期：1996-03-01 00:00:00

abstract：:Theoretical models about the benefits of philopatry predict that immigrant fitness can be higher, lower or similar to that of philopatrics depending on habitat heterogeneity, dispersal costs, distance between patches or population densities. In this study, we compared transience rates, local survival and recruitment a...

journal_title：Oecologia

authors： Oro D,Tavecchia G,Genovart M

更新日期：2011-04-01 00:00:00

abstract：:For a symbiosis to be a mutualism, benefits received must exceed costs incurred for both partners. Partners can prevent costly overexploitation through behaviors that moderate interactions with the other symbiont. In a symbiosis between crayfish and branchiobdellidan annelids, the worms can increase crayfish survival ...

journal_title：Oecologia

authors： Farrell KJ,Creed RP,Brown BL

更新日期：2014-02-01 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 pace-of-life syndrome describes covariation between life-history, behavioral and physiological traits; while, the emerging behavioral-bioenergetics theory proposes mechanistic links between those traits in a spatial-ecological context. However, little is known about the association between the limits to metabolic ...

journal_title：Oecologia

authors： Boratyński Z,Szyrmer M,Koteja P

更新日期：2020-07-01 00:00:00

abstract：:The stress-gradient hypothesis (SGH) predicts that the community-wide prevalence of positive interactions, relative to negative interactions, is greater under more severe environmental conditions. Because the frequency of positive and negative interactions within a community is the aggregate of multiple pair-wise inte...

journal_title：Oecologia

authors： le Roux PC,McGeoch MA

更新日期：2010-03-01 00:00:00

abstract：:Our experiments addressed systemic metabolic effects in above-ground plant tissue as part of the plant's response to the arbuscular mycorrhizal (AM) interaction. Due to the physiology of this interaction, we expected effects in the areas of plant mineral nutrition, carbon allocation and stress-related metabolism, but ...

journal_title：Oecologia

authors： Fester T,Fetzer I,Buchert S,Lucas R,Rillig MC,Härtig C

更新日期：2011-12-01 00:00:00

abstract：:Seed predation can cause substantial seed losses and influence plant population dynamics, but the impact depends on the extent to which populations are limited by seed availability or favorable microsites for recruitment. Harvester ants are the dominant post-dispersal seed predators in Australia's tropical savannas, a...

journal_title：Oecologia

authors： Setterfield SA,Andersen AN

更新日期：2018-04-01 00:00:00

abstract：:Organisms normally grow at a sub-maximal rate. After experiencing a period of arrested growth, individuals often show compensatory growth responses by modifying their life-history, behaviour and physiology. However, the strength of compensatory responses may vary across broad geographic scales as populations differ in...

journal_title：Oecologia

authors： Orizaola G,Dahl E,Laurila A

更新日期：2014-01-01 00:00:00

abstract：:Two physiological races of the carabid beetle, Pterostichus nigrita, are compared. The larvae from the northern Scandinavian population (polar circle) develop faster in all temperature regimens, have a reduced mortality in lower temperatures and an increased growth rate in high temperatures compared with the central E...

journal_title：Oecologia

authors： Ferenz HJ

更新日期：1975-03-01 00:00:00

abstract：:Although it is well-documented from theoretical studies that pathogens have the capacity to generate cycles, the occurrence and role of pathogens and disease have been poorly empirically studied in cyclic voles and lemmings. In screening for the occurrence of disease in cyclic vole and lemming populations, we found th...

journal_title：Oecologia

authors： Niklasson B,Nyholm E,Feinstein RE,Samsioe A,Hörnfeldt B

更新日期：2006-11-01 00:00:00

abstract：:The maintenance of separated diploid and polyploid populations within a contact zone is possible due to both prezygotic and postzygotic isolation mechanisms. Niche differentiation between two cytotypes may be an important prezygotic isolating mechanism and can be studied using reciprocal transplant experiments. We inv...

journal_title：Oecologia

authors： Raabová J,Fischer M,Münzbergová Z

更新日期：2008-12-01 00:00:00

abstract：:Rodents of the family Heteromyidae are proficient gatherers and hoarders of seeds. A major component of their adaptive specialization for harvesting and transporting seeds is their spacious, fur-lined cheek pouches. Precise measurements of cheek pouch capacities are essential if ecologists are to understand the foragi...

journal_title：Oecologia

authors： Vander Wall SB,Longland WS,Pyare S,Veech JA

更新日期：1997-12-01 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：:We investigated the effects of elevated CO2 (600 μl l-1 vs 350 μl l-1) and phosphorus supply (1 g P m-2 year-1 vs unfertilized) on intact monoliths from species-rich calcareous grassland in a greenhouse. Aboveground community dry mass remained almost unaffected by elevated CO2 in the first year (+6%, n.s.), but was si...

journal_title：Oecologia

authors： Stöcklin J,Schweizer K,Körner C

更新日期：1998-08-01 00:00:00

abstract：:A traditional view of diverse floral traits is that they reflect differences in foraging preferences of pollinators. The role of pollinators in the evolution of floral traits has been questioned recently by broad community surveys, especially studies concerning variation in pollinator assemblages and visitation freque...

journal_title：Oecologia

authors： Gong YB,Huang SQ

更新日期：2011-07-01 00:00:00

abstract：:Juvenile habitat use and early life migratory behaviors of successfully recruited adult fish provide unique insight into critical habitats for a population, and this information allows restoration plans to be tailored to maximize benefits. Retrospective analysis of adult otolith chemistry combined with fish-otolith gr...

journal_title：Oecologia

authors： Turner SM,Limburg KE

更新日期：2016-01-01 00:00:00

abstract：:Resprouting is the main regeneration mechanism after fire in Mediterranean-type ecosystems. Herbivores play an important role in controlling postfire seedling establishment, but their influence on regeneration by resprouting is less well known. To study the effects of fire intensity on resprouting of Adenostoma fascic...

journal_title：Oecologia

authors： Moreno JM,Oechel WC

更新日期：1991-01-01 00:00:00

abstract：:Twenty nine harpacticoid copepods are new to Bermuda and significant changes are noted in the distribution records of several species. Six temporary groups are organized to separate the copepods on their apparent zoogeographical ranges: (1) cosmopolitan, (2) warm temperate-tropical, (3) North Atlantic, (4) North Atlan...

journal_title：Oecologia

authors： Coull BC,Herman SS

更新日期：1970-12-01 00:00:00

abstract：:Geographic variation in species interactions can have major effects on species distributions and can be important for the resistance of resident communities to invasive species. We tested the hypothesis that coexistence or replacement of a resident North American mosquito Aedes aegypti with the invasive Aedes albopict...

journal_title：Oecologia

authors： Leisnham PT,Juliano SA

更新日期：2010-09-01 00:00:00