The effect of different zooplankton grazing patterns resulting from diel vertical migration on phytoplankton growth and composition: a laboratory experiment.

abstract：:Much more tannic acid or pin oak tannin is required to precipitate the abundant leaf protein, ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBPC), from Manduca sexta gut fluid adjusted to pH 6.5 than is required to precipitate this protein from an aqueous buffer at the same pH. This finding demonstrates that some ...

journal_title：Oecologia

authors： Martin MM,Martin JS

更新日期：1984-03-01 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

abstract：:We examined the relationship between size variability and the distribution of functional gender in stands of the monoecious, wind-pollinated annual Ambrosia artemisiifolia. Populations of 60 individuals were grown in the greenhouse at a density of 372 m-2 and at two nutrient levels. Among the surviving plants, after s...

journal_title：Oecologia

authors： Ackerly DD,Jasieński M

更新日期：1990-04-01 00:00:00

abstract：:The influence of fluctuating light intensities on phytoplankton composition and diversity was investigated for 49 days under semi-continuous culture conditions with sufficient nutrient supply, using phytoplankton assemblages from Lake Biwa, Japan. Light conditions were either periodically changed from high intensity (...

journal_title：Oecologia

authors： Flöder S,Urabe J,Kawabata ZI

更新日期：2002-11-01 00:00:00

abstract：:Weight losses from sweet chestnut and beech leaves, attributable to biotic and abiotic breakdown processes, leaching and microbial decomposition have been studied using tethered leaves and litter bags. The experimental sites were two adjacent areas of deciduous woodland. In one area (the Castanea site) a mor-like mode...

journal_title：Oecologia

authors： Anderson JM

更新日期：1973-09-01 00:00:00

abstract：:For many amphibians, high temperatures and limited precipitation are crucial habitat characteristics that limit species ranges and modulate life-history characteristics. Although knowledge of the ability of amphibians to cope with such environmental harshness is particularly relevant in the light of ongoing environmen...

journal_title：Oecologia

authors： Reniers J,Brendonck L,Roberts JD,Verlinden W,Vanschoenwinkel B

更新日期：2015-07-01 00:00:00

abstract：:Regulation of seed germination phenology is an important aspect of the life history strategy of invading annual plant species. In the obligately selfing winter annual grass Bromus tectorum, seeds are at least conditionally dormant at dispersal in early summer and lose dormancy through dry-afterripening. Patterns of ge...

journal_title：Oecologia

authors： Meyer SE,Allen PS

更新日期：1999-07-01 00:00:00

abstract：:The regularly inundated region of the middle Amazon river together with its marginal lakes is characterized by special hydrographic, hydrochemical and biological conditions [1-4]. It is called "Várzea". Regular investigations of such Várzea lakes revealed several correlations between changes in water level, thermic an...

journal_title：Oecologia

authors： de Menezes Santos U

更新日期：1973-09-01 00:00:00

abstract：:Effective communication regarding distance in the vertical dimension is critical for many ecological, climatological and broader geophysical studies of the Earth. Confusion exists regarding the definition of three English words commonly used to describe the vertical dimension: (1) elevation; (2) altitude; and (3) he...

journal_title：Oecologia

authors： McVicar TR,Körner C

更新日期：2013-02-01 00:00:00

abstract：:Enhanced ultraviolet-B (UV-B) radiation may have multiple effects on both plants and animals and affect plant-herbivore interactions directly and indirectly by inducing changes in host plant quality. In this study, we examined combined effects of UV-B and herbivory on the defence of the mountain birch (Betula pubescen...

journal_title：Oecologia

authors： Anttila U,Julkunen-Tiitto R,Rousi M,Yang S,Rantala MJ,Ruuhola T

更新日期：2010-09-01 00:00:00

abstract：:Understanding the factors that influence plant distributions is a considerable challenge for ecologists in the face of environmental change. Here, we quantify spatial and temporal variation in the finite rate of population increase of the annual grass Vulpia fasciculata. Specifically, we test the hypothesis that the n...

journal_title：Oecologia

authors： Norton LR,Firbank LG,Scott A,Watkinson AR

更新日期：2005-07-01 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：: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：:Environmental effects on parents can strongly affect the phenotype of their offspring, which alters the heritability of traits and the offspring's responses to the environment. We examined whether P limitation of the aquatic invertebrate, Daphnia magna, alters the responses of its offspring to inadequate P nutrition. ...

journal_title：Oecologia

authors： Frost PC,Ebert D,Larson JH,Marcus MA,Wagner ND,Zalewski A

更新日期：2010-04-01 00:00:00

abstract：:C(4) plants are rare in cool climates, an ecological pattern attributable to their poor photosynthetic performance at low temperatures relative to C(3) species. However, some C(4) species are able to persist at high latitudes and high elevations, possibly due to the characteristics of the particular microsites they in...

journal_title：Oecologia

authors： Kubien DS,Sage RF

更新日期：2003-11-01 00:00:00

abstract：:Many plant species currently exist in fragmented populations of different sizes, while they also experience unpredictable climatic fluctuation over time. However, we still understand little about how plant demography responds to such spatial and temporal environmental variability. We studied population dynamics of an ...

journal_title：Oecologia

authors： Tomimatsu H,Ohara M

更新日期：2010-04-01 00:00:00

abstract：:We tested (1) how the presence of a diverse soil faunal community affects ecosystem carbon balance and (2) whether habitat patchiness modifies the influence of soil fauna on plant growth and carbon dynamics. We constructed cylindrical microcosms that contained coniferous forest humus and different litter materials eit...

journal_title：Oecologia

authors： Sulkava P,Huhta V,Laakso J,Gylén ER

更新日期：2001-09-01 00:00:00

abstract：:A model is presented that simulates nitrogen uptake and response to nitrogen deficiency by a growing annual plant canopy. It is a descriptive model as it is not based on a detailed definition of the biochemical processes involved. It does incorporate a considerable amount of experimental knowledge about these processe...

journal_title：Oecologia

authors： Seligman NG,van Keulen H,Goudriaan J

更新日期：1975-09-01 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：:Hybridization has been proposed as a mechanism by which exotic plants can increase their invasiveness. By generating novel recombinants, hybridization may result in phenotypes that are better adapted to the new environment than their parental species. We experimentally assessed the resistance of five exotic Fallopia t...

journal_title：Oecologia

authors： Krebs C,Gerber E,Matthies D,Schaffner U

更新日期：2011-12-01 00:00:00

abstract：:For organisms that exhibit complex life cycles, resource conditions experienced by individuals before metamorphosis can strongly affect phenotypes later in life. Such resource-induced effects are known to arise from variation in resource quantity, yet little is known regarding effects stemming from variation in resour...

journal_title：Oecologia

authors： Stoler AB,Stephens JP,Relyea RA,Berven KA,Tiegs SD

更新日期：2015-11-01 00:00:00

abstract：:Investigating factors which affect the decline in survival with age, i.e. actuarial senescence, is important in order to understand how demographic rates vary in wild populations. Although the evidence for the occurrence of actuarial senescence in wild populations is growing, very few studies have compared actuarial s...

journal_title：Oecologia

authors： Holand H,Kvalnes T,Gamelon M,Tufto J,Jensen H,Pärn H,Ringsby TH,Sæther BE

更新日期：2016-07-01 00:00:00

abstract：:Theory suggests that source-sink dynamics can allow coexistence of intraguild predators and prey, but empirical evidence for this coexistence mechanism is limited. We used capture-mark-recapture, genetic methods, and stable isotopes to test whether source-sink dynamics promote coexistence between stream fishes, the in...

journal_title：Oecologia

authors： Sepulveda AJ,Lowe WH

更新日期：2011-08-01 00:00:00

abstract：:Functional diversity has been identified as a key to understanding ecosystem and community functioning. However, due to the lack of a sound definition its nature and measurement are still poorly understood. In the same way that species diversity can be split into species richness and species evenness, so functional di...

journal_title：Oecologia

authors： Mouillot D,Mason WH,Dumay O,Wilson JB

更新日期：2005-01-01 00:00:00

abstract：:Non-trophic interactions, driven by one species changing the behavior but not density of another species, appear to be as pervasive as those involving consumption. However, ecologists have only begun to explore non-trophic interactions in species-rich communities. We investigated interactions within a community includ...

journal_title：Oecologia

authors： Prasad RP,Snyder WE

更新日期：2010-03-01 00:00:00

abstract：:According to the plant vigour hypothesis, galling insects should respond positively and perform better on vigorous plants or plant parts, the opposite of the predictions of the plant stress hypothesis. I carried out field experiments to analyse the effects of sustained abiotic stress on the interactions between the co...

journal_title：Oecologia

authors： De Bruyn L

更新日期：1995-04-01 00:00:00

abstract：:I tested hypotheses for ecological roles of storage carbohydrates in perennating organs (roots and branches) of alpine Oxytropis sericea, a leguminous herb. In naturally growing plants, total nonstructural carbohydrates achieved their maximal concentration in the fall, declined during winter, and reached minimal level...

journal_title：Oecologia

authors： Wyka T

更新日期：1999-08-01 00:00:00

abstract：:Life history theory and empirical studies suggest that large size or earlier metamorphosis are suitable proxies for increased lifetime fitness. Thus, across a gradient of larval habitat quality, individuals with similar phenotypes for these traits should exhibit similar post-metamorphic performance. Here we examine th...

journal_title：Oecologia

authors： Van Allen BG,Briggs VS,McCoy MW,Vonesh JR

更新日期：2010-12-01 00:00:00

abstract：:Positive species interactions are ubiquitous and crucial components of communities, but they are still not well incorporated into established ecological theories. The definitions of facilitation and mutualism overlap, and both are often context dependent. Many interactions that are facilitative under stressful conditi...

journal_title：Oecologia

authors： Lim RJY,Lam WN,Tan HTW

更新日期：2018-11-01 00:00:00

abstract：:We explored whether a variation in predation and habitat complexity between conspecific populations can drive qualitatively different numerical dynamics in those populations. We considered two disjunct populations of the least killifish, Heterandria formosa, that exhibit long-term differences in density, top fish pred...

journal_title：Oecologia

authors： Richardson JM,Gunzburger MS,Travis J

更新日期：2006-04-01 00:00:00