The natural history of a fugitive prairie plant (Mirabilis hirsuta (Pursh) MacM.).

abstract：:Northern deer populations are typically partially migratory, but the relationship between migratory movements and parasites has received little attention. Migration often involves movement from a low-elevation winter range towards a summer range at higher elevation. In Europe these movements may also involve a gradien...

journal_title：Oecologia

authors： Mysterud A,Qviller L,Meisingset EL,Viljugrein H

更新日期：2016-02-01 00:00:00

abstract：:Geographic variation in species interactions can have major effects on species distributions and can be important for the resistance of resident communities to invasive species. We tested the hypothesis that coexistence or replacement of a resident North American mosquito Aedes aegypti with the invasive Aedes albopict...

journal_title：Oecologia

authors： Leisnham PT,Juliano SA

更新日期：2010-09-01 00:00:00

abstract：:The up-regulation of secondary metabolic pathways following herbivore attack and the subsequent reduction in herbivore performance have been identified in numerous woody plant species. Eucalypts constitutively express many secondary metabolites in the leaves, including terpenes and formylated phloroglucinol compounds ...

journal_title：Oecologia

authors： Henery ML,Wallis IR,Stone C,Foley WJ

更新日期：2008-07-01 00:00:00

abstract：:The density of a plant population is expected to influence reproductive success through changes in the quantity and quality of pollination service, or because both density and reproduction respond to quality of the local environment. We reported previously that seed set in sparse natural populations of Delphinium nutt...

journal_title：Oecologia

authors： Bosch M,Waser NM

更新日期：2001-01-01 00:00:00

abstract：:Anthropogenic land use may shape vegetation composition and affect trophic interactions by altering concentrations of host plant metabolites. Here, we investigated the hypotheses that: (1) plant N and defensive secondary metabolite contents of the herb Plantago lanceolata are affected by land use intensity (LUI) and t...

journal_title：Oecologia

authors： Wäschke N,Hancock C,Hilker M,Obermaier E,Meiners T

更新日期：2015-09-01 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：:Understanding the mechanisms by which populations are regulated is critical for predicting the effects of large-scale perturbations. While discrete mortality events provide clear evidence of direct impacts, indirect pathways are more difficult to assess but may play important roles in population and ecosystem dynamics...

journal_title：Oecologia

authors： Schmidt JH,Putera J,Wilson TL

更新日期：2020-02-01 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：:11 fruit fly species captured at 47 sites in a natural forest area at Cooloola (south-east Queensland) revealed specific patterns of spatial abundance. Although all species were collected throughout the study area, D. bryoniae, D. mayi, D. neohumeralis and D. tryoni were more prevalent (average number caught per trap)...

journal_title：Oecologia

authors： Zalucki MP,Drew RA,Hooper GH

更新日期：1984-10-01 00:00:00

abstract：:Development of ornamental characters exposed to directional selection may be particularly sensitive to the effect of parasitic infections. Antlers are ornamental characters of importance in intraspecific interactions, and are in reindeer (Rangifer) developed by both males and females. By antihelmintic treatment of nat...

journal_title：Oecologia

authors： Folstad I,Arneberg P,Karter AJ

更新日期：1996-03-01 00:00:00

abstract：:We modeled the dynamics of a metapopulation of the land snail Arianta arbustorum in north-eastern Switzerland to investigate the effect of population subdivision on the persistence of a land snail metapopulation and to analyze the interaction between spatial factors, population subdivision, and catastrophes. We develo...

journal_title：Oecologia

authors： Akçakaya HR,Baur B

更新日期：1996-03-01 00:00:00

abstract：:General circulation models project more intense and frequent droughts over the next century, but many questions remain about how terrestrial ecosystems will respond. Of particular importance, is to understand how drought will alter the species composition of regenerating temperate forests wherein symbiotic dinitrogen ...

journal_title：Oecologia

authors： Wurzburger N,Miniat CF

更新日期：2014-04-01 00:00:00

abstract：:The study presents a data set of above-ground biomass (AGB), structure, spacing and fire regime, for 24 stands of pristine Siberian Scots pine (Pinus sylvestris) forests with lichens (n = 20) or Vaccinium/mosses (n = 4) as ground cover, along four chronosequences. The stands of the "lichen" site type (LT) were stratif...

journal_title：Oecologia

authors： Wirth C,Schulze ED,Schulze W,von Stünzner-Karbe D,Ziegler W,Miljukova IM,Sogatchev A,Varlagin AB,Panvyorov M,Grigoriev S,Kusnetzova W,Siry M,Hardes G,Zimmermann R,Vygodskaya NN

更新日期：1999-10-01 00:00:00

abstract：:Predators have far-reaching effects on communities by triggering top-down trophic cascades that influence ecosystem functioning. Omnivory and intraguild interactions between predators give rise to reticulate food webs and may either strengthen or dampen trophic cascades depending on context. Disentangling the effects ...

journal_title：Oecologia

authors： Mestre L,Piñol J,Barrientos JA,Espadaler X

更新日期：2016-01-01 00:00:00

abstract：:Climate change effects on plants are expected to be primarily mediated through early life stage transitions. Snowfall variability, in particular, may have profound impacts on seedling recruitment, structuring plant populations and communities, especially in mid-latitude systems. These water-limited and frequently inva...

journal_title：Oecologia

authors： Gornish ES,Aanderud ZT,Sheley RL,Rinella MJ,Svejcar T,Englund SD,James JJ

更新日期：2015-02-01 00:00:00

abstract：:Genets of Trifolium repens (white clover) were collected from three patches of old permanent pasture dominated by Agrostis capillaris, Holcus lanatus or Lolium perenne. Plants derived from the genets were grown with plants of one grass species present on one side of each T. repens, and a different grass species on the...

journal_title：Oecologia

authors： Turkington R,Hamilton RS,Gliddon C

更新日期：1991-04-01 00:00:00

abstract：:An empirical model for predicting net photosynthesis (P N ) and dark respiration (R D ) in the field was developed and tested for Bouteloua gracilis (H.B.K.) Lag., the dominant C4 grass of the North American shortgrass prairie. P N is predicted as a function of soil water potential, canopy air temperature, irradiance,...

journal_title：Oecologia

authors： Detling JK,Parton WJ,Hunt HW

更新日期：1978-01-01 00:00:00

abstract：:In common with samples from less taxonomically constrained studies, significant correlations exist between the numbers of predatory and non-predatory species in assemblages of terrestrial beetles. Under logarithmic transformation the relationship can be described reasonably well by a straight line. Explanations for pr...

journal_title：Oecologia

authors： Gaston KJ,Warren PH,Hammond PM

更新日期：1992-06-01 00:00:00

abstract：:A rich mammalian fauna is found on islands that lie on the Sunda Shelf, a continental shelf extending from Vietnam to Borneo and Java that was periodically exposed as dry land during the Pleistocene. The correlation between log of island area and number of species is high (r 2=0.94); the slope of the curve is moderate...

journal_title：Oecologia

authors： Heaney LR

更新日期：1984-01-01 00:00:00

abstract：:Spatial genetic patterns can be influenced by a broad range of factors across a landscape. The hypothesis that heterogeneous vegetation and habitat fragmentation rather than water flow influence genetic patterns in two riparian plant species with different niches was tested. Genotyping by sequencing was used to assess...

journal_title：Oecologia

authors： Hopley T,Byrne M

更新日期：2018-10-01 00:00:00

abstract：:In the tropical dry forest of the central Pacific coast of Mexico the pollination and reproductive success of the bombacaceous tree Ceiba grandiflora was negatively affected by habitat disruption. Two of the three bat species that function as effective pollinators for this species ( Glossophaga soricina and Musonycter...

journal_title：Oecologia

authors： Quesada M,Stoner KE,Rosas-Guerrero V,Palacios-Guevara C,Lobo JA

更新日期：2003-05-01 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：:Plant-plant facilitation is a crucial ecological process, as many plant species (facilitated) require the presence of an established individual (nurse) to recruit. Some plant facilitative interactions disappear during the ontogenetic development of the facilitated plant but others persist, even when the two plants are...

journal_title：Oecologia

authors： Montesinos-Navarro A,Segarra-Moragues JG,Valiente-Banuet A,Verdú M

更新日期：2016-06-01 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 effect of the heat interaction between a water column and sediments on the formation, development, and duration of existence of anaerobic zones in ice-covered lakes is estimated based on observational data from five frozen lakes located in northwestern Russia and North America. A simple one-dimensional model that ...

journal_title：Oecologia

authors： Golosov S,Maher OA,Schipunova E,Terzhevik A,Zdorovennova G,Kirillin G

更新日期：2007-03-01 00:00:00

abstract：:Stable carbon isotope techniques were employed to study the food habits of the termite Macrotermes michaelseni (Isoptera: Termitidae) in a semiarid savanna habitat in Kenya. At Kajiado this species utilized approximately 70% herbaceous vegetation (mostly grass) and 30% woody vegetation, while at Ruiru approximately 64...

journal_title：Oecologia

authors： Boutton TW,Arshad MA,Tieszen LL

更新日期：1983-08-01 00:00:00

abstract：:Pollen movement is often restricted in natural populations, and insufficient pollination is a potential constraint on sexual reproduction in outcrossing species. Seed-set should decrease with increased distance from the pollen source in outcrossing plants. This prediction was tested using females of the clonal, gynodi...

journal_title：Oecologia

authors： Widén B,Widén M

更新日期：1990-06-01 00:00:00

abstract：:Ideal free distribution (IFD) models predict that animals distribute themselves such that no individual can increase its fitness by moving to another patch. Many empirical tests assume that the interference among animals is independent of density and do not quantify the effects of density on fitness traits. Using two ...

journal_title：Oecologia

authors： van der Hammen T,Montserrat M,Sabelis MW,de Roos AM,Janssen A

更新日期：2012-05-01 00:00:00

abstract：:The promise of "trait-based" plant ecology is one of generalized prediction across organizational and spatial scales, independent of taxonomy. This promise is a major reason for the increased popularity of this approach. Here, we argue that some important foundational assumptions of trait-based ecology have not receiv...

journal_title：Oecologia

authors： Shipley B,De Bello F,Cornelissen JH,Laliberté E,Laughlin DC,Reich PB

更新日期：2016-04-01 00:00:00

abstract：:The activity behaviour of the common vole, Microtus arvalis was studied in an enclosure during a one-year cycle. The number of voles varied between 2 and 25 specimens. Emergence from burrows, running through pathways and visits at a feeding site were automatically recorded by passage counters which we developed for us...

journal_title：Oecologia

authors： Lehmann U,Sommersberg CW

更新日期：1980-01-01 00:00:00