Density dependent interactions between VA mycorrhizal fungi and even-aged seedlings of two perennial Fabaceae species.

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：:The impacts of climatic change on organisms depend on the interaction of multiple stressors and how these may affect the interactions among species. Consumer-prey relationships may be altered by changes to the abundance of either species, or by changes to the per capita interaction strength among species. To examine t...

journal_title：Oecologia

authors： Poore AG,Graba-Landry A,Favret M,Sheppard Brennand H,Byrne M,Dworjanyn SA

更新日期：2013-11-01 00:00:00

abstract：:There is considerable variation in cannibalism between different species and also between individuals of different species, although relatively little is known about what creates this variation. We investigated the degree of cannibalism in guppy (Poecilia reticulata) populations originating from high and low predation...

journal_title：Oecologia

authors： Nilsson KA,Lundbäck S,Postavnicheva-Harri A,Persson L

更新日期：2011-10-01 00:00:00

abstract：:1. The mortality of part of the Calathus melanocephalus (Linn.) population, which showed locomotory activity during autumn 1966 was studied in the following year. 2. Mortality occurs mainly during the winter; during the winter of 1966-1967 it was about 36-41% for normal males and females at Schiermonnikoog (Table 1). ...

journal_title：Oecologia

authors： Vlijm L,van Dijk TS,Wijmans SY

更新日期：1968-11-01 00:00:00

abstract：:Analyses of carbon-assimilation patterns in response to intercellular CO2 concentrations, and the photosynthetic water-and nitrogen-use efficiencies, were conducted for a C3, a C4, and three C3-C4 species in the genus Flaveria in order to determine some of the advantages and disadvantages of C3-C4 intermediate photosy...

journal_title：Oecologia

authors： Monson RK

更新日期：1989-08-01 00:00:00

abstract：:The carotenoid composition of 33 species of green algal lichens and 5 species of blue-green algal lichens was examined and compared with that of the leaves of higher plants. As in higher plants, green algal lichen species which were found in both shade and full sunlight exhibited higher levels of the carotenoids invol...

journal_title：Oecologia

authors： Adams WW 3rd,Demmig-Adams B,Lange OL

更新日期：1993-07-01 00:00:00

abstract：:Reciprocal transplant experiments have been used to estimate the probability that negative frequency-dependent selection by natural enemies has occurred in host populations by determining whether pest populations are less adapted to "foreign" (rare) hosts, which originate from a population with which the pests have no...

journal_title：Oecologia

authors： Roy BA

更新日期：1998-06-01 00:00:00

abstract：:Conspecific attraction is the preferential settlement into habitat patches with conspecifics. To be a good proximate strategy, fitness gains from settling with conspecifics must outweigh the costs of higher conspecific densities, such as intraspecific competition. Two types of benefits have been proposed to explain co...

journal_title：Oecologia

authors： Donahue MJ

更新日期：2006-08-01 00:00:00

abstract：:Invasive species are capable of altering ecosystems through the consumption of basal resources. However, quantifying the effects of invasive species in large ecosystems is challenging. Measuring changes in basal resources (i.e., phytoplankton) at an ecosystem scale is an important and potentially translatable response...

journal_title：Oecologia

authors： Tumolo BB,Flinn MB

更新日期：2017-10-01 00:00:00

abstract：:Avian malaria parasites are known to have negative effects on their hosts, including consequences for reproductive success and survival. However, the outcome of disease may vary greatly among individuals, due to their particular genetic background, their past history of exposure to infections, or the way they respond ...

journal_title：Oecologia

authors： Arriero E,Pérez-Tris J,Ramírez A,Remacha C

更新日期：2018-12-01 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：:The paper considers a model of competition, based upon the Lotka-Volterra equations, which explicitly considers the effect of density independent mortality upon the outcome of competition. The model's possible application to wild Drosophila species in Europe are considered. ...

journal_title：Oecologia

authors： Shorrocks B,Begon M

更新日期：1975-12-01 00:00:00

abstract：:Understanding the factors that affect establishment success of new species in established communities requires the study of both the ability of new species to establish and community resistance. Spatial pattern of species within a community can affect plant performance by changing the outcome of inter-specific competi...

journal_title：Oecologia

authors： Thébault A,Stoll P,Buttler A

更新日期：2012-12-01 00:00:00

abstract：:Marion Island (47°S, 38°E) has one of the most oceanic climates on earth, with consistently low air temperatures, high precipitation, constantly high humidity, and low incident radiation. Since 1968 mean surface air temperature has increased significantly, by 0.025° C year-1. This was strongly associated with correspo...

journal_title：Oecologia

authors： Smith VR,Steenkamp M

更新日期：1990-11-01 00:00:00

abstract：:The partitioning of energy in three species of nematode, Paroigolaimella bernensis, Diplogasteritus nudicapitatus and Rhabditis curvicaudata, from a polysaprobic environment is considered. Temperature was shown to have a profound impact on the rate at which these organisms obtained food resources and on the partitioni...

journal_title：Oecologia

authors： Woombs M,Laybourn-Parry J

更新日期：1985-01-01 00:00:00

abstract：:The absence of essential biochemical nutrients, such as polyunsaturated fatty acids or sterols, has been considered as a mechanism determining trophic interactions between the herbivore Daphnia and its phytoplankton food source. Here, we experimentally quantify the sensitivity of two Daphnia species to decreasing amou...

journal_title：Oecologia

authors： Martin-Creuzburg D,Wacker A,von Elert E

更新日期：2005-07-01 00:00:00

abstract：:This study quantified both the age- and sex-specific survival rates of juveniles and adults, and tested for interannual differences in age-specific survival rates of the southern elephant seal population at Marion Island. Pups were tagged on an annual basis from 1983 onwards at Marion Island, and a consistent recaptur...

journal_title：Oecologia

authors： Pistorius PA,Bester MN,Kirkman SP

更新日期：1999-11-01 00:00:00

abstract：:Ungulates are important to the diet of bears because they are high in protein, and the level of dietary protein strongly influences bear size. The size a bear obtains as an adult influences important life history characteristics, such as age of reproduction and reproductive success; therefore, it is important to know ...

journal_title：Oecologia

authors： Hatch KA,Kester KA,Auger J,Roeder BL,Bunnell K,Black HL

更新日期：2019-04-01 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：:Density-dependent mortality may regulate many populations, but due to an offshore larval phase in benthic marine organisms, it is often difficult to quantify the effects of mortality of arriving individuals. We added approximately 600 recruit-sized individuals onto coral reef that parallels patterns in naturally settl...

journal_title：Oecologia

authors： Brunton BJ,Booth DJ

更新日期：2003-11-01 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：:This study examines the idea that variation in forelimb length among male anurans influences reproductive success, and does so independently of body size. Analyses of covariance and multivariate analyses of morphological data for five species of explosives breeders are used to test the prediction that for species in w...

journal_title：Oecologia

authors： Lee JC

更新日期：1986-05-01 00:00:00

abstract：:Climate change causes species range expansions to higher latitudes and altitudes. It is expected that, due to differences in dispersal abilities between plants and soil biota, range-expanding plant species will become associated with a partly new belowground community in their expanded range. Theory on biological inva...

journal_title：Oecologia

authors： Wilschut RA,Magnée KJH,Geisen S,van der Putten WH,Kostenko O

更新日期：2020-10-01 00:00:00

abstract：:Several studies published over the last years suggest that the ability of many species to cope with global change will be closely related to the current amount of plasticity for fitness-related traits. Thus, disentangling general patterns in phenotypic flexibility, which could be then included in models aimed to predi...

journal_title：Oecologia

authors： Aguilar-Kirigin ÁJ,Naya DE

更新日期：2013-11-01 00:00:00

abstract：:To improve the understanding of how native plant diversity influences invasion, we examined how population and community diversity may directly and indirectly be related to invasion in a natural field setting. Due to the large impact of the dominant C(4) grass species (Andropogon gerardii) on invasion resistance of ta...

journal_title：Oecologia

authors： Chang CC,Smith MD

更新日期：2012-04-01 00:00:00

abstract：:Previous studies have shown that green sunfish, Lepomis cyanellus, have strong effects on the activity, habitat use, social interactions and mating dynamics of a stream-dwelling water strider, Aquarius remigis (family Gerridae, hence, gerrids). In nature, however, stream pools often contain not just sunfish and water ...

journal_title：Oecologia

authors： Sih A,Krupa JJ

更新日期：1996-01-01 00:00:00

abstract：:Nitrogen deposition in the northeastern US changed N availability in the latter part of the twentieth century, with potential legacy effects. However, long-term N cycle measurements are scarce. N isotopes in tree rings have been used as an indicator of N availability through time, but there is little verification of w...

journal_title：Oecologia

authors： Burnham MB,Adams MB,Peterjohn WT

更新日期：2019-12-01 00:00:00

abstract：:This paper describes the epiphytic lichen vegetation on maple trees along an 1.1-km avenue leading from the outer suburbs of Freiburg toward the city center. A special aim of this investigation was to examine the variation in the coverage by lichens altogether and by each lichen species as a function of increasing dis...

journal_title：Oecologia

authors： Wirth V,Brinckmann B

更新日期：1977-03-01 00:00:00

abstract：:Plants in the Mediterranean climate region of California typically experience summer drought conditions, but correlations between zones of frequent coastal fog inundation and certain species' distributions suggest that water inputs from fog may influence species composition in coastal habitats. We sampled the stable H...

journal_title：Oecologia

authors： Corbin JD,Thomsen MA,Dawson TE,D'Antonio CM

更新日期：2005-10-01 00:00:00

abstract：:The effects of pollination, predispersal seed predation, and plant density upon seed production of Astragalus canadensis L. in a tall-grass prairie were studied by experimental manipulation of plant density. Seed production was greater at high than low plant densities; this was inferred to result from differences in p...

journal_title：Oecologia

authors： Platt WJ,Hill GR,Clark S

更新日期：1974-03-01 00:00:00