Field metabolic rates and water influxes of two sympatric Gerbillidae:Gerbillus allenbyi andG. pyramidum.

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：:Warming-induced nutrient enrichment in the Arctic may lead to shifts in leaf-level physiological properties and processes with potential consequences for plant community dynamics and ecosystem function. To explore the physiological responses of Arctic tundra vegetation to increasing nutrient availability, we examined ...

journal_title：Oecologia

authors： Prager CM,Boelman NT,Eitel JUH,Gersony JT,Greaves HE,Heskel MA,Magney TS,Menge DNL,Naeem S,Shen C,Vierling LA,Griffin KL

更新日期：2020-03-01 00:00:00

abstract：:The effect of invertebrate shredders on organic matter dynamics and phosphorus spiralling was studied over a 30-week period in laboratory streams. The streams were fed by groundwater, layered with cobble and gravel from a natural stream, covered with opaque material to eliminate algal growth, and initially contained 1...

journal_title：Oecologia

authors： Mulholland PJ,Elwood JW,Newbold JD,Ferren LA

更新日期：1985-05-01 00:00:00

abstract：:This study presents novel evidence that 15N natural abundance can be used as a robust indicator to detect pollutant nitrogen in natural plant communities. Vegetation from the heavily polluted industrial area of Cubatão in São Paulo State, SE Brazil, was strongly 15N depleted compared to plants at remote sites. Histori...

journal_title：Oecologia

authors： Stewart GR,Aidar MP,Joly CA,Schmidt S

更新日期：2002-05-01 00:00:00

abstract：:Most animals metamorphose, changing morphology, physiology, behavior and ecological interactions. Size- and habitat-dependent mortality risk is thought to affect the evolution and plastic expression of metamorphic timing, and high predation during the morphological transition is posited as a critical selective force s...

journal_title：Oecologia

authors： Touchon JC,Jiménez RR,Abinette SH,Vonesh JR,Warkentin KM

更新日期：2013-11-01 00:00:00

abstract：:How pathogens affect their hosts is a key question in infectious disease ecology, and it can have important influences on the spread and persistence of the pathogen. Sin Nombre virus (SNV) is the etiological agent of hantavirus pulmonary syndrome (HPS) in humans. A better understanding of SNV in its reservoir host, th...

journal_title：Oecologia

authors： Luis AD,Douglass RJ,Hudson PJ,Mills JN,Bjørnstad ON

更新日期：2012-06-01 00:00:00

abstract：:We compare results of field study and model analysis of two butterfly populations to evaluate the importance of alternative mechanisms causing changes in abundance. Although understanding and predicting population fluctuations is a central goal of population ecology, it is not often achieved because long-term abundanc...

journal_title：Oecologia

authors： McLaughlin JF,Hellmann JJ,Boggs CL,Ehrlich PR

更新日期：2002-08-01 00:00:00

abstract：:Heavy damage of the mountain birch foliage, as well as application of small amounts of insect frass to the soil beneath the trees, reduced growth of Epirrita autumnata larvae reared in these trees in the following year. Foliage damage in the previous year decreased larval survival, too. Both foliage damage and insect ...

journal_title：Oecologia

authors： Haukioja E,Suomela J,Neuvonen S

更新日期：1985-02-01 00:00:00

abstract：:Experimental ponds were used as a model system of habitat patches to study the effect of habitat size on the relative growth performance of tadpoles of Bufo americanus and Pseudacris triseriata, and on colonization by predatory insects. Three pond depths and surface areas were habitat size treatments in a replicated, ...

journal_title：Oecologia

authors： Pearman PB

更新日期：1995-04-01 00:00:00

abstract：:The tendency of mammals to increase or decrease body size with respect to geography or time depends on the abundance, availability, and size of resources. This dependency accounts for a change in mass with respect to geography, including latitude (Bergmann's rule), a desert existence, and life on oceanic islands (the ...

journal_title：Oecologia

authors： McNab BK

更新日期：2010-09-01 00:00:00

abstract：:Due to an overlap in the resources used by the flight muscles with the resources used during egg production, it has been hypothesised that an increased dispersal in fragmented landscapes may result in a physiological trade-off between flight and reproduction. In a common garden experiment, we investigated the effects ...

journal_title：Oecologia

authors： Gibbs M,Van Dyck H

更新日期：2010-06-01 00:00:00

abstract：:While morphological differences such as tongue length are often featured as drivers of pollinator floral preferences, differences in chemical detection and tolerance to secondary compounds may also play a role. We sought to better understand the role of secondary compounds in floral preference by examining visitation ...

journal_title：Oecologia

authors： Villalona E,Ezray BD,Laveaga E,Agrawal AA,Ali JG,Hines HM

更新日期：2020-07-01 00:00:00

abstract：:Chronic atmospheric N deposition has modified relative N availability, altering the biogeochemical cycles of forests and the stoichiometry of nutrients in trees, inducing P limitation, and modifying the N:P ratios of plant biomass. This study examines how the variation in the foliar stoichiometry of Abies pinsapo acro...

journal_title：Oecologia

authors： Blanes MC,Viñegla B,Merino J,Carreira JA

更新日期：2013-04-01 00:00:00

abstract：:Effects of temperature changes on phytoplankton communities seem to be highly context-specific, but few studies have analyzed whether this context specificity depends on differences in the abiotic conditions or in species composition between studies. We present an experiment that allows disentangling the contribution ...

journal_title：Oecologia

authors： Striebel M,Schabhüttl S,Hodapp D,Hingsamer P,Hillebrand H

更新日期：2016-11-01 00:00:00

abstract：:Plants experience unique challenges due to simultaneous life in two spheres, above- and belowground. Interactions with other organisms on one side of the soil surface may have impacts that extend across this boundary. Although our understanding of plant-herbivore interactions is derived largely from studies of leaf he...

journal_title：Oecologia

authors： Barber NA,Adler LS,Bernardo HL

更新日期：2011-02-01 00:00:00

abstract：:Herbivore-induced defences appear ubiquitous across most biomes and habitats. Yet the direct correlation between induced changes in host plant chemistry and the population dynamics of the herbivore remain untested in many systems. In plant-herbivore interactions in the terrestrial environment, indirect or tritrophic i...

journal_title：Oecologia

authors： Coleman RA,Ramchunder SJ,Davis KM,Moody AJ,Foggo A

更新日期：2007-03-01 00:00:00

abstract：:Developmental periods are integral components of life history strategies that can have important fitness consequences and vary enormously among organisms. However, the selection pressures and mechanisms causing variation in length of developmental periods are poorly understood. Particularly puzzling are prolonged deve...

journal_title：Oecologia

authors： Palacios MG,Martin TE

更新日期：2006-01-01 00:00:00

abstract：:The duration and amount of water captured on leaves and its functional significance is highly varied. Leaf surface wettability influences water absorption, gas exchange, pathogen infection, nutrient leaching, contamination by pollutants, self-cleaning properties and in freezing environments the probability of extrinsi...

journal_title：Oecologia

authors： Aryal B,Neuner G

更新日期：2010-01-01 00:00:00

abstract：:In a tropical environment near the equator in Nairobi, Kenya, flesh fly development is nearly continuous throughout the year with only a few individuals being channeled into pupal diapause during the coldest months. Two species reared in a field cage completed 7 generations/year. Generation time for nondiapause flies ...

journal_title：Oecologia

authors： Denlinger DL

更新日期：1978-01-01 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：: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：:The foraging strategies of four naturally co-existing heteromyid rodent species were investigated: Dipodomys deserti (≈100 g), D. merriami (≈38 g), Microdipodops pallidus (≈13 g), and Perognathus longimembris (≈7 g). In 208 over-night laboratory foraging trials animals were provided with millet seed distributed in clu...

journal_title：Oecologia

authors： Trombulak SC,Kenagy GJ

更新日期：1979-01-01 00:00:00

abstract：:Holling's (1992) proposition that discontinuities in biotic and abiotic processes generate structure in ecological systems is examined experimentally by imposing size-specific perturbations on marine sediment assemblages. Two kinds of perturbations were applied: organic enrichment and predation, each at two levels. Pe...

journal_title：Oecologia

authors： Raffaelli D,Hall S,Emes C,Manly B

更新日期：2000-02-01 00:00:00

abstract：:The effect of malarial parasitism on the ability of male western fence lizards, Sceloporus occidentalis, to compete for access to females was assessed experimentally. Pairs of male lizards, one infected with the malarial parasite, Plasmodium mexicanum, and the other not infected, were matched by size and color and pla...

journal_title：Oecologia

authors： Schall JJ,Dearing MD

更新日期：1987-09-01 00:00:00

abstract：:Aspects of the demography of Monhystera disjuncta were investigated at different temperatures (in agnotobiotic cultures) and in different feeding conditions (monoxenic cultures with different bacterial strains, and different densities in the feeding suspension with one strain). Embryonic development time, minimum gene...

journal_title：Oecologia

authors： Vranken G,Herman PM,Heip C

更新日期：1988-11-01 00:00:00

abstract：:Cottonwoods are dominant riparian trees of the western United States and are known for their propensity to hybridize. We compared the decomposition of leaf litter from two species (Populus angustifolia and P. fremontii) and their hybrids. Three patterns were found. First, in one terrestrial and two aquatic experiments...

journal_title：Oecologia

authors： Driebe EM,Whitham TG

更新日期：2000-04-01 00:00:00

abstract：:In order to monitor the nitrate assimilation capability of mire plants, in vivo current and maximally induced nitrate reductase activity (NRA) were investigated in 14 species of vascular plants from four different sites in a central Swedish mire. One of the sites was a swamp forest. The plants studied included species...

journal_title：Oecologia

authors： Högbom L,Ohlson M

更新日期：1991-09-01 00:00:00

abstract：:In the simultaneously hermaphroditic marine fish, Serranus subligarius, male role individuals are known to pair spawn, group spawn and streak spawn. While the effects of these common mating tactics on mating success in the male role have been well studied, their consequences for the reproductive success of the individ...

journal_title：Oecologia

authors： Adreani MS

更新日期：2012-10-01 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：:Aggregations of different-looking animals are frequently seen in nature, despite well-documented selection pressures on individuals to maintain phenotypically homogenous groups. Two well-known theories, the 'confusion effect' (reduced ability of a predator to accurately target an individual in a group) and the 'oddity...

journal_title：Oecologia

authors： Rodgers GM,Kimbell H,Morrell LJ

更新日期：2013-05-01 00:00:00