The growth and asymmetry of neighbouring plants of white clover (Trifolium repens L.).

abstract：:Recent research has shown that many mutualistic communities display non-random structures. While our understanding of the structural properties of mutualistic communities continues to improve, we know little of the biological variables resulting in them. Mutualistic communities include those formed between ants and ex...

journal_title：Oecologia

authors： Chamberlain SA,Kilpatrick JR,Holland JN

更新日期：2010-11-01 00:00:00

abstract：:In flowering plants, many dioecious species display a certain degree of sexual dimorphism in non-reproductive traits, but this dimorphism tends to be much less striking than that found in animals. Sexual size dimorphism in plants may be limited because competition for light in crowded environments so strongly penalise...

journal_title：Oecologia

authors： Labouche AM,Pannell JR

更新日期：2016-07-01 00:00:00

abstract：:The diurnal changes in proline and water contents of Zygophyllum quatarense and Francoeuria crispa were investigated under desert conditions. In both plants, the proline content was low before sunrise amounting to 10.42 μmoles/g fresh weight in Zygophyllum and 6.3 μmoles/g fresh weight in Francoeuria. By the progress ...

journal_title：Oecologia

authors： Batanouny KH,Ebeid MM

更新日期：1981-01-01 00:00:00

abstract：:It is widely recognized that pollinators vary in their effectiveness in pollination mutualisms, due both to differences in flower-pollinator morphological fit as well as pollinator behaviour. However, pollination webs typically treat all interactions as equal, and we contend that this method may provide misleading res...

journal_title：Oecologia

authors： Sánchez-Lafuente AM,Rodríguez-Gironés MA,Parra R

更新日期：2012-01-01 00:00:00

abstract：:Studies with Nasutitermes and Rhynchotermes (Isoptera, Nasutitermitinae) in a Costa Rican rainforest suggest that nitrogen fixation by gut symbionts may play a significant role in termite nutrition. Leaf-litter feeders ingest more and fix less nitrogen than do wood-litter feeders; both species feed preferentially on N...

journal_title：Oecologia

authors： Prestwich GD,Bentley BL,Carpenter EJ

更新日期：1980-09-01 00:00:00

abstract：:Spatial variation in biotic interactions and natural selection are fundamental parts of natural systems, and can be driven by differences in both trait distributions and the local environmental context of the interaction. Most studies of plant-animal interactions have been performed only in natural settings, making it...

journal_title：Oecologia

authors： König MA,Wiklund C,Ehrlén J

更新日期：2014-04-01 00:00:00

abstract：:Humans are rapidly altering thermal landscapes, so a central challenge to organismal ecologists is to better understand the thermal niches of ectotherms. However, there is much disagreement over how we should go about this. Some ecologists assume that a statistical model of abundance as a function of habitat temperatu...

journal_title：Oecologia

authors： Stoffels RJ,Richardson AJ,Vogel MT,Coates SP,Müller WJ

更新日期：2016-01-01 00:00:00

abstract：:(1) Small saplings of Tilia cordata, when planted in deciduous woodlands, are damaged or destroyed by rodents. (2) Experiments with captive animals show that the damage is identical with that caused by bank voles. (3) Bank voles are present at all sites where damage occurs. (4) Small saplings of Betula spp. establishe...

journal_title：Oecologia

authors： Pigott CD

更新日期：1985-10-01 00:00:00

abstract：:We present evidence of genetic variation in and covariation between leaf-level gas exchange properties and leaf size among family lines of Polygonum arenastrum. This self-fertilizing annual had previously been shown to vary genetically in developmental phenology and in morphology (size of leaves, internodes, flowers a...

journal_title：Oecologia

authors： Geber MA,Dawson TE

更新日期：1990-12-01 00:00:00

abstract：:Spatiotemporal patchiness in the soil environment is thought to be crucial for the maintenance of soil biodiversity. It provides diverse microhabitats (allowing resource partitioning), and presents these in a complex mosaic, such that competitors may be spatially and temporally separated (promoting patch dynamics). Th...

journal_title：Oecologia

authors： Ettema CH,Rathbun SL,Coleman DC

更新日期：2000-11-01 00:00:00

abstract：:We have investigated interspecific interactions between larvae of the 3 native British anurans, Rana temporaria, Bufo bufo and B. calamita in the field and in the laboratory. Over a 3 year period, predation of B. calamita spawn by the two competitively superior species accounted for only 0.3-3.0% of the total deposite...

journal_title：Oecologia

authors： Banks B,Beebee TJ

更新日期：1987-07-01 00:00:00

abstract：:Despite the potential impact on prey fitness and predator-prey interactions, most studies of predation risk ignore physiological responses and their dependence upon food level and sex. Therefore, we reared male and female larvae of the damselfly Lestes viridis under predator stress (dragonfly larvae) at high and low f...

journal_title：Oecologia

authors： Slos S,De Meester L,Stoks R

更新日期：2009-09-01 00:00:00

abstract：:Two calanoid copepod genera, Boeckella and Calamoecia have broadly similar geographic distributions in Australia but Boeckella is more common than Calamoecia. A field survey and literature search indicate that Boeckella is usually the first calanoid to colonize newly formed bodies of water, and Boeckella is more commo...

journal_title：Oecologia

authors： Maly EJ

更新日期：1984-05-01 00:00:00

abstract：:No definitive explanation for the form of the relationship between species diversity and ecosystem productivity exists nor is there agreement on the mechanisms linking diversity and productivity across scales. Here, we examine changes in the form of the diversity-productivity relationship within and across the plant c...

journal_title：Oecologia

authors： Jennings MD,Williams JW,Stromberg MR

更新日期：2005-05-01 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：:An automated, fiber optic point quadrat system for vegetation sampling is described. Because the effective point diameter of this system never exceeds 25 μm it minimizes the substantial errors which can arise with conventional point quadrats. Automatic contact detection eliminates operator subjectivity, and permits wo...

journal_title：Oecologia

authors： Caldwell MM,Harris GW,Dzurec RS

更新日期：1983-09-01 00:00:00

abstract：:Optimal foraging theory is based on the assumption that at least some aspects of foraging behavior are genetically determined (Pyke et al. 1977; Kamil and Sargent 1980; Pyke 1984). Nonetheless, very few studies have examined the role of genetics in foraging behavior. Here, we report on geographical differences in the ...

journal_title：Oecologia

authors： Hedrick AV,Riechert SE

更新日期：1989-09-01 00:00:00

abstract：:Lianas are an important component of tropical forests, contributing up to 25% of the woody stems and 35% of woody species diversity. Lianas invest less in structural support but more in leaves compared to trees of similar biomass. These physiological and morphological differences suggest that lianas may interact with ...

journal_title：Oecologia

authors： Wright A,Tobin M,Mangan S,Schnitzer SA

更新日期：2015-02-01 00:00:00

abstract：:The concept of trade-offs between reproduction and other fitness traits is a fundamental principle of life history theory. For many plant species, the cost of sexual reproduction affects vegetative growth in years of high seed production through the allocation of resources to reproduction at different hierarchical lev...

journal_title：Oecologia

authors： Sánchez-Humanes B,Sork VL,Espelta JM

更新日期：2011-05-01 00:00:00

abstract：:Animal-pollinated invasive species have frequently been demonstrated to outcompete native species for pollinator attention, which can have detrimental effects on the reproductive success and population dynamics of native species. Many animal-pollinated invasive species exhibit showy flowers and provide substantial rew...

journal_title：Oecologia

authors： Da Silva EM,King VM,Russell-Mercier JL,Sargent RD

更新日期：2013-06-01 00:00:00

abstract：:The costs and benefits of resource integration in Hydrocotyle bonariensis were examined by comparing severed and intact clones grown across multiple resource gradients. Basipetal movement of water, nitrogen and photosynthates was demonstrated to occur between two rhizome branch systems interconnecting hundreds of rame...

journal_title：Oecologia

authors： Evans JP

更新日期：1991-04-01 00:00:00

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：:Osmoderma eremita is a species of beetle that inhabits hollows in ancient trees, which is a habitat that has decreased significantly during the last century. In southeastern Sweden, we studied the metapopulation dynamics of this beetle over a 25 year period, using capture-mark-recapture. The metapopulation size had be...

journal_title：Oecologia

authors： Lindman L,Larsson MC,Mellbrand K,Svensson GP,Hedin J,Tranberg O,Ranius T

更新日期：2020-12-01 00:00:00

abstract：:We analysed the spatial and temporal pattern of egg laying in great spotted cuckoo females using microsatellite typing to determine parentage of the eggs and nestlings found in host (magpie) nests. The results showed that there were no exclusive laying territories in the study area. Cases of multiparasitism could be d...

journal_title：Oecologia

authors： Martínez JG,Soler JJ,Soler M,Burke T

更新日期：1998-11-01 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：:The optimal strategy in the design of nature reserves is investigated by means of the theory of island biogeography. Some previous results are revised. A new form of the incidence functions is presented. Their merit is that they do not ignore the minimum area requirements, they are more flexible, and in a number of in...

journal_title：Oecologia

authors： Kindlmann P

更新日期：1983-08-01 00:00:00

abstract：:Species of the 'bana' vegetation in the Amazonas region of equatorial South America have scleromorphic leaves. This leaf type, which characterizes the vegetation of Mediterranean climates, among others, has apparently evolved in this community in response to the oligotrophic soils and widely fluctuating water table.An...

journal_title：Oecologia

authors： Sobrado MA,Medina E

更新日期：1980-01-01 00:00:00

abstract：:We studied the nutritional behaviour of hinds foraging on a mixed-forest edge by direct observation of their choices at each season and by measuring nutrient concentration in the plants. We compared nutrient concentrations in the observed diets with those in the total available vegetation, and with those of 1,000 rand...

journal_title：Oecologia

authors： Verheyden-Tixier H,Renaud PC,Morellet N,Jamot J,Besle JM,Dumont B

更新日期：2008-06-01 00:00:00

abstract：:The number of tracheal gills in the larval Limnephilini varies according to oxygen conditions of the surrounding waters. High proportions of oxygen cause a significant decrease in the number of gills, whereas low oxygen concentrations retult in a significant increase in the number of gills. These morphological adapati...

journal_title：Oecologia

authors： Wichard W

更新日期：1974-06-01 00:00:00

abstract：:Plant isoprene emissions are known to contribute to abiotic stress tolerance, especially during episodes of high temperature and drought, and during cellular oxidative stress. Recent studies have shown that genetic transformations to add or remove isoprene emissions cause a cascade of cellular modifications that inclu...

journal_title：Oecologia

authors： Monson RK,Weraduwage SM,Rosenkranz M,Schnitzler JP,Sharkey TD

更新日期：2021-01-08 00:00:00