Relating tree growth to rainfall in Bolivian rain forests: a test for six species using tree ring analysis.

abstract：:The effects of time of the day and frequency of application and of purity of artificially deposited pollen loads on fruiting and seed set were studied in Rhinanthus angustifolius (diurnally visited by bumblebees) and Viscaria vulgaris (diurnally visited by bumblebees, nocturnally by sphingid moths).Time of the day did...

journal_title：Oecologia

authors： Kwak MM,Jennersten O

更新日期：1986-11-01 00:00:00

abstract：:A simulation program on the germination of winter annuals is written in such a way that the influence of changing environmental conditions on germination characteristics such as the time of germination, the percentage of germination and the distribution function of germination is described as well as possible in accor...

journal_title：Oecologia

authors： Janssen JG

更新日期：1974-09-01 00:00:00

abstract：:As humans continue to alter tropical landscapes across the world, it is important to understand what environmental factors help determine the persistence of biodiversity in modified ecosystems. Studies on well-known taxonomic groups can offer critical insights as to the fate of biodiversity in these modified systems. ...

journal_title：Oecologia

authors： Moura NG,Lees AC,Aleixo A,Barlow J,Berenguer E,Ferreira J,Mac Nally R,Thomson JR,Gardner TA

更新日期：2016-03-01 00:00:00

abstract：:The contribution of small mammals to nitrogen cycling could have repercussions for the producer community in the maintaining or perhaps magnifying of nitrogen availability. Our objective was to model nitrogen outputs (deposition of feces and urine) of small mammals in an old-field ecosystem and estimate the amount of ...

journal_title：Oecologia

authors： Clark JE,Hellgren EC,Parsons JL,Jorgensen EE,Engle DM,Leslie DM Jr

更新日期：2005-07-01 00:00:00

abstract：:Estimates were made of the ecological fish production in two small lowland rivers uninhabited by salmonids. Eight sites were examined in the Utrata River drainage basin, and five in the Zalewka Brook. Nets were placed at the upper and lower limits of each site and fish were captured using electrofishing apparatus; at ...

journal_title：Oecologia

authors： Penczak T

更新日期：1981-02-01 00:00:00

abstract：:Measurements were made of the photosynthetic gas exchange properties and water use efficiency of 19 species of mangrove in 9 estuaries with different salinity and climatic regimes in north eastern Australia and Papua New Guinea. Stomatal conductance and CO2 assimilation rates differed significantly between species at ...

journal_title：Oecologia

authors： Clough BF,Sim RG

更新日期：1989-04-01 00:00:00

abstract：:Mature male parr successfully fertilized eggs of anadromous female Atlantic salmon, Salmo salar, in competition with anadromous males under simulated natural conditions. Mating situations were created in which mature male parr and anadromous males competing for the opportunity to spawn with an anadromous female differ...

journal_title：Oecologia

authors： Hutchings JA,Myers RA

更新日期：1988-03-01 00:00:00

abstract：:Anuran amphibians have traditionally been considered suitable model organisms for community ecology studies. In this paper, we review and quantitatively re-analyze the original studies published on dietary relationships among anuran communities worldwide. We re-analyzed 33 independent communities from all continents, ...

journal_title：Oecologia

authors： Vignoli L,Luiselli L

更新日期：2012-06-01 00:00:00

abstract：:Isoprene emission from plants represents one of the principal biospheric controls over the oxidative capacity of the continental troposphere. In the study reported here, the seasonal pattern of isoprene emission, and its underlying determinants, were studied for aspen trees growing in the Rocky Mountains of Colorado. ...

journal_title：Oecologia

authors： Monson RK,Harley PC,Litvak ME,Wildermuth M,Guenther AB,Zimmerman PR,Fall R

更新日期：1994-09-01 00:00:00

abstract：:A widely cited benefit of predator diversity is greater suppression of insect herbivores, with corresponding increases in plant biomass. In the context of a vector-borne pathogen system, predator species richness may also influence plant disease risk via the direct effects of predators on the abundance and behavior of...

journal_title：Oecologia

authors： Long EY,Finke DL

更新日期：2015-04-01 00:00:00

abstract：:We analyze gut architectures of 42 species of marine polychaetes in terms of their anatomically distinct compartments, and quantify differences among guts in terms of ratios of body volume to gut volume, relative compartmental volumes, total gut aspect ratios and compartmental aspect ratios. We use multivariate techni...

journal_title：Oecologia

authors： Penry DL,Jumars PA

更新日期：1990-01-01 00:00:00

abstract：:It is often suggested that habitat attributes and interspecific interactions can cause non-random species co-occurrence patterns, but quantifying their contributions can be difficult. Null models that systematically exclude and include habitat effects can give information on the contribution of these factors to commun...

journal_title：Oecologia

authors： Azeria ET,Ibarzabal J,Hébert C

更新日期：2012-04-01 00:00:00

abstract：:There is considerable theoretical evidence that a trade-off between competitive and colonization ability enables species coexistence. However, empirical studies testing for the presence of a competition-colonization (CC) trade-off and its importance for species coexistence have found mixed results. In a microcosm expe...

journal_title：Oecologia

authors： Limberger R,Wickham SA

更新日期：2011-11-01 00:00:00

abstract：:Computer simulations of a pollinator foraging in a mixture of two species were used to explore how plant reproduction can be influenced by interspecific pollination movements. Interspecific pollen transfer led to strong competitive effects when availabilities of pollen, receptive stigma surfaces, or pollinator movemen...

journal_title：Oecologia

authors： Waser NM

更新日期：1978-01-01 00:00:00

abstract：:Mycorrhizal fungi are crucial for the ecological success of land plants, providing their hosts with nutrients in exchange for organic C. However, not all plants are mycorrhizal, especially ferns, of which about one-third of the species lack this symbiosis. Because the mycorrhizal status is evolutionarily ancestral, th...

journal_title：Oecologia

authors： Kessler M,Güdel R,Salazar L,Homeier J,Kluge J

更新日期：2014-07-01 00:00:00

abstract：:Predators attack and plants defend, so herbivores face the dilemma of how to eat enough without being eaten. But do differences in the personality of herbivores affect the foraging choices of individuals? We explored the ecological impact of personality in a generalist herbivore, the brushtail possum (Trichosurus vulp...

journal_title：Oecologia

authors： Mella VS,Ward AJ,Banks PB,McArthur C

更新日期：2015-01-01 00:00:00

abstract：:Invasive generalist ectoparasites provide a tool to study factors affecting expansion rates. An increase in the number of host species may facilitate geographic range expansion by increasing the number of suitable habitats and by affecting local extinction and colonization rates. A geographic perspective on parasite h...

journal_title：Oecologia

authors： Välimäki P,Kaitala A,Madslien K,Härkönen L,Várkonyi G,Heikkilä J,Jaakola M,Ylönen H,Kortet R,Ytrehus B

更新日期：2011-08-01 00:00:00

abstract：:The spatial distributions of selected soil properties in two adjacent sites in southwest Michigan were examined to evaluate the potential effects of chronic disturbance on resource heterogeneity. One site was a cultivated field that had been cleared, plowed, and cropped annually for decades prior to sampling while the...

journal_title：Oecologia

authors： Robertson GP,Crum JR,Ellis BG

更新日期：1993-12-01 00:00:00

abstract：:Agricultural land use is a leading cause of habitat degradation, leaving a legacy of ecological impacts long after agriculture has ceased. Yet the mechanisms for legacy effects, such as altered plant community composition, are not well understood. In particular, whether plant community recovery is limited by an inabil...

journal_title：Oecologia

authors： Barker CA,Turley NE,Orrock JL,Ledvina JA,Brudvig LA

更新日期：2019-04-01 00:00:00

abstract：:In this study we investigated the relationship between food availability, feeding ecology and territoriality in a population of Cactus Finches, Geospiza scandens, on Isla Daphne Major, Galápagos, between 1979 and 1981.We monitored the phenologies of the principal food types on the island and related them to changes in...

journal_title：Oecologia

authors： Millington SJ,Grant PR

更新日期：1983-04-01 00:00:00

abstract：:The photosynthetic incorporation of H14CO3- by the alga Platymonas subcordiformis decreased with increasing concentrations of NaCl in the medium. There was no correlation between the response of P. subcordiformis to salinity in high or low NaCl-concentrations in the growing solution. When other osmotic substances were...

journal_title：Oecologia

authors： Kirst GO

更新日期：1975-09-01 00:00:00

abstract：:Soil properties of pioneer Pinus flexilis stands with similar topography and climate were investigated. Soils supporting this tree in association with Cercocarpus ledifolius were found to have higher percentages of total nitrogen than soils beneath similar stands lacking Cercocarpus.An excavated Cercocarpus ledifolius...

journal_title：Oecologia

authors： Lepper MG,Fleschner M

更新日期：1977-12-01 00:00:00

abstract：:Bromus tectorum L. dominates sites of large-scale disturbance, while Poa pratensis L. dominates the sites of small-scale disturbance in the Festuca/Symphoricarpos habitat type in eastern Washington (USA). The role of incident irradiation in influencing these distributions was examined using field and glasshouse experi...

journal_title：Oecologia

authors： Bookman PA,Mack RN

更新日期：1983-03-01 00:00:00

abstract：:Direct and interactive effects of daylength and temperature preconditioning of above- and below-ground parts of Chrysanthemum morifolium Ramat. 'Astrid' are examined in relation to net photosynthesis. Most previous work on thermal preconditioning has concentrated on the effects of a given thermal regime on entire plan...

journal_title：Oecologia

authors： Adams MS,Fayyaz MM

更新日期：1979-01-01 00:00:00

abstract：:Long-termed fumigation of pea seedlings with SO2 caused typical alterations of the concentration of free glutamate and glutamine as well as fluctuations of the activity of glutamate dehydrogenase and glutamine synthetase. Shortly after the beginning of the fumigation with low concentrations of SO2 (up to 0,3 ppm) the ...

journal_title：Oecologia

authors： Jäger HJ,Pahlich E

更新日期：1972-06-01 00:00:00

abstract：:Tropospheric O(3) and deposition of reactive N threaten the composition and function of natural and semi-natural vegetation even in remote regions. However, little is known about effects of these pollutants individually or in combination on plant species in alpine habitats. We analyzed 11 frequent plant species of a s...

journal_title：Oecologia

authors： Bassin S,Werner RA,Sörgel K,Volk M,Buchmann N,Fuhrer J

更新日期：2009-01-01 00:00:00

abstract：:Water stress and temperature effects on growth, translocation and reallocation of 14C assimilated by blue grama (Bouteloua gracilis (H.B.K.) Lag. ex Steud.) were studied for sods extracted from shortgrass prairie. The sods were kept at either 24°/16° or 34°/16°C (day/nigh) temperatures and were labeled at two phenolog...

journal_title：Oecologia

authors： Chung HH,Trlica MJ

更新日期：1980-01-01 00:00:00

abstract：:Arthropods and pathogens damage leaves in natural ecosystems and may reduce photosynthesis at some distance away from directly injured tissue. We quantified the indirect effects of naturally occurring biotic damage on leaf-level photosystem II operating efficiency (Phi(PSII)) of 11 understory hardwood tree species usi...

journal_title：Oecologia

authors： Aldea M,Hamilton JG,Resti JP,Zangerl AR,Berenbaum MR,Frank TD,Delucia EH

更新日期：2006-08-01 00:00:00

abstract：:The outflying and homeflying activity pattern of a colony of the Indian pygmy bat Pipistrellus mimus occupying a tunnel was studied under natural conditions. Before leaving the tunnel for foraging, the bats made circling flights outside to sample the environmental light conditions. The onset and end of activity was re...

journal_title：Oecologia

authors： Isaac SS,Marimuthu G

更新日期：1993-12-01 00:00:00

abstract：:While parasites are increasingly recognized as important components of ecosystems, we currently know little about how they alter ecosystem nutrient availability via host-mediated nutrient cycling. We examined whether infection alters the flow of nutrients through hosts and whether such effects depend upon host diet qu...

journal_title：Oecologia

authors： Narr CF,Frost PC

更新日期：2015-12-01 00:00:00