Patchiness and compensatory growth in a fungus-Collembola system.

abstract：:Arafura filesnakes (Acrochordus arafurae) are large (up to 2.5 m, 5 kg) aquatic nonvenomous snakes that feed entirely on fishes. A 10-year field study in the Australian wet-dry tropics revealed strong correlations between rainfall patterns, fish abundance, and snake population dynamics. All of these characteristics sh...

journal_title：Oecologia

authors： Madsen T,Shine R

更新日期：2000-08-01 00:00:00

abstract：:In many mammals, early survival differs between the sexes, with males proving the more fragile sex ["Fragile male (FM) hypothesis"], especially in sexually dimorphic species where males are the larger sex. Male-biased allocation (MBA) by females may offset this difference. Here, we evaluate support for the FM and MBA ...

journal_title：Oecologia

authors： Kraus C,Mueller B,Meise K,Piedrahita P,Pörschmann U,Trillmich F

更新日期：2013-04-01 00:00:00

abstract：:Release from natural enemies is often cited as a key factor for understanding the success of invasive plant species in novel environments. However, with time invasive species will accumulate native enemies in their invaded range, with factors such as spread distance from the site of introduction, climate and leaf-leve...

journal_title：Oecologia

authors： Tabassum S,Leishman MR

更新日期：2018-02-01 00:00:00

abstract：:Female lifetime reproductive success in a small population of individually-marked adders in southern Sweden was studied over a period of seven years. Reproductive characteristics varied little from year to year and were consistent through time in individual females. Most females mature at four years of age and reprodu...

journal_title：Oecologia

authors： Madsen T,Shine R

更新日期：1992-10-01 00:00:00

abstract：:The life-cycle of the dominant brackish water ostracod Cyprideis torosa (Jones, 1850) has been studied during 4 years. The species has only one generation anually. Reproduction is fairly similar throughout the years and appears to be tuned in to temperature. The number of adults has one peak every year and can be desc...

journal_title：Oecologia

authors： Heip C

更新日期：1976-09-01 00:00:00

abstract：:Spatial distribution in the two collembolan species Tomocerus minor and Orchesella cincta is greatly influenced by the distribution of the environmental factors water and food. T. minor is totally restricted in distribution to water-saturated places, where it forms spaced-out aggregations. O. cincta assembles in water...

journal_title：Oecologia

authors： Verhoef HA,Nagelkerke CJ

更新日期：1977-01-01 00:00:00

abstract：:Leaves of birch (Betula pendula Roth) and sycamore (Acer pseudoplatanus L.) were initiated and grown either in a simulated shadelight (80 μmol m-2 s-1, R/FR ratio 0.28)/dark photoenvironment or a white light (250 μmol m-2 s-1, R/FR>1)/dark photoenvironment. Until the leaves were more than 50% expanded, growth rates (m...

journal_title：Oecologia

authors： Taylor G,Davies WJ

更新日期：1986-07-01 00:00:00

abstract：:Fourteen temperate, submerged macrophytes were cultivated in the laboratory at high DIC levels (3.3-3.8 mM), 10.4-14.4 mol photons (PAR) m-2 d-1 and 15°C. Photosynthesis at photosaturation ranged between 0.59 and 17.98 mg O2 g-1 DW h-1 at ambient pH (8.3) and were markedly higher between 1.76 and 47.11 mg O2 g-1 DW h-...

journal_title：Oecologia

authors： Nielsen SL,Sand-Jensen K

更新日期：1989-11-01 00:00:00

abstract：:Beaver (Castor canadensis) affect the benthic invertebrate community of small woodland streams in Quebec through habitat modifications. Their activities influence community structure through the replacement of lotic taxa by lentic forms and community function by increasing the absolute importance of collectors and pre...

journal_title：Oecologia

authors： McDowell DM,Naiman RJ

更新日期：1986-03-01 00:00:00

abstract：:Long-term studies were carried out in central Finland between 1985 and 2003 to examine the temporal and spatial variation in the density of otter populations. Snow tracking was used to estimate the total population and the number of litters in the study area. In total 52 otters, including 16 cubs in 11 litters, lived ...

journal_title：Oecologia

authors： Sulkava RT,Sulkava PO,Sulkava PE

更新日期：2007-09-01 00:00:00

abstract：:Increasing evidence has shown that nutrients and consumers interact to control primary productivity in natural systems, but how abiotic stress affects this interaction is unclear. Moreover, while herbivores can strongly impact zonation patterns in a variety of systems, there are few examples of this in salt marshes. W...

journal_title：Oecologia

authors： Alberti J,Méndez Casariego A,Daleo P,Fanjul E,Silliman BR,Bertness M,Iribarne O

更新日期：2010-05-01 00:00:00

abstract：:The dynamics of vegetative and reproductive growth were compared in matched pairs of Mediteranean and desert populations of three unrelated annual species, Erucaria hispanica (L.) Druce, Brachypodium distachyon (L.) Beauv. and Bromus fasciculatus C. Presl., under high and low levels of water availability in a common-e...

journal_title：Oecologia

authors： Aronson J,Kigel J,Shmida A,Klein J

更新日期：1992-01-01 00:00:00

abstract：:Desert annuals of Death Valley, California have higher average light-saturated photosynthetic capacities and leaf nitrogen contents than do early-successional annuals of Illinois. The leaves of annuals in the light-unlimited Death Valley environment change little in specific weight, nitrogen, or photosynthetic capacit...

journal_title：Oecologia

authors： Mooney HA,Field C,Gulmon SL,Bazzaz FA

更新日期：1981-08-01 00:00:00

abstract：:We have examined the extreme longevity displayed by trees in relation to a theory mainly developed in animals, namely, the controversial rate of living (ROL) theory of aging which proposes that longevity is negatively correlated to metabolic rate. Plant metabolism implies respiration and photosynthesis; both are susce...

journal_title：Oecologia

authors： Issartel J,Coiffard C

更新日期：2011-01-01 00:00:00

abstract：:Dissolved O(2) is an important aquatic ecosystem health indicator. Metabolic and gas exchange (G) rates, which control O(2) concentration, are affected by nutrient loading and other environmental factors. Traditionally, aquatic metabolism has been reported as primary production:community respiration (P:R) ratios using...

journal_title：Oecologia

authors： Venkiteswaran JJ,Wassenaar LI,Schiff SL

更新日期：2007-08-01 00:00:00

abstract：:Stratospheric ozone depletion has caused ground-level ultraviolet-B (UV-B) radiation to rise in temperate latitudes of both hemispheres. Because the effects of enhanced UV-B radiation on the nutrition of food consumed by mammalian herbivores are unknown, we measured nutritional and chemical constituents of 18 forages ...

journal_title：Oecologia

authors： Thines NJ,Shipley LA,Bassman JH,Slusser JR,Gao W

更新日期：2008-05-01 00:00:00

abstract：:Carbon dioxide efflux and soil microenvironmental factors were measured diurnally in Carex aquatilus-and Eriophorum angustifolium-dominated riparian tundra communities to determine the relative importance of soil environmental factors controlling ecosystem carbon dioxide exchange with the atmosphere. Measurements were...

journal_title：Oecologia

authors： Oberbauer SF,Gillespie CT,Cheng W,Gebauer R,Serra AS,Tenhunen JD

更新日期：1992-12-01 00:00:00

abstract：:We evaluate the empirical and theoretical support for the hypothesis that a large proportion of native species richness is required to maximize ecosystem stability and sustain function. This assessment is important for conservation strategies because sustenance of ecosystem functions has been used as an argument for t...

journal_title：Oecologia

authors： Schwartz MW,Brigham CA,Hoeksema JD,Lyons KG,Mills MH,van Mantgem PJ

更新日期：2000-02-01 00:00:00

abstract：:Emergence and survival of honey mesquite (Prosopis glandulosa var.glandulosa Torr.) seedlings was quantified on sites with contrasting grazing histories: long-term continuous grazing (LTG) and long-term protection (LTP) from grazing by cattle. On each site, different levels of heroaceous defoliation were imposed at mo...

journal_title：Oecologia

authors： Brown JR,Archer S

更新日期：1989-03-01 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：: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：:We reared larvae of three generalist insect species on plants occurring in their habitats. Individuals of each species were kept either on mixed diets, or on each plant species separately. We measured food plant preference in the mixed-diet group and compared insect performance on single plants to the performance on t...

journal_title：Oecologia

authors： Hägele BF,Rowell-Rahier M

更新日期：1999-06-01 00:00:00

abstract：:We studied behavioral mechanisms underlying the spatial distribution of Euphydryas anicia (Lepidoptera: Nymphalidae) females searching for larval host plants on a flat plain in Colorado. The rate of female movement, as represented by an empirically estimated diffusion coefficient, is affected by two factors. First, wh...

journal_title：Oecologia

authors： Odendaal FJ,Turchin P,Stermitz FR

更新日期：1989-02-01 00:00:00

abstract：:Predator-generated variation in prey energy intake remains the dominant explanation of adaptive response to predation risk in prey life history, morphology and physiology across a wide range of taxa. This "behavioural hypothesis" suggest that chemical or visual signals of predation risk reduce prey energy intake leadi...

journal_title：Oecologia

authors： Beckerman AP,Wieski K,Baird DJ

更新日期：2007-05-01 00:00:00

abstract：:The effects of a number of factors, notably leaf mining insects, on the longevity of beech and holm oak leaves have been studied. The regular monitoring of individually labelled leaves was complemented by analysis of leaf fall data. Both methods confirm that these mining insects have only a slight impact on their host...

journal_title：Oecologia

authors： Pritchard IM,James R

更新日期：1984-09-01 00:00:00

abstract：:We examined patterns of density and species diversity for leaf-mining Lepidopterans and gall-forming Hymenopterans in two oak (Quercus spp.) hybrid zones: Quercus depressipes x Q. rugosa and Q. emoryi x Q. coccolobifolia. In both species complexes, hybrid hosts typically supported significantly lower densities and spe...

journal_title：Oecologia

authors： Boecklen WJ,Spellenberg R

更新日期：1990-11-01 00:00:00

abstract：:Resource partitioning of diet and habitat use was studied in the entire Amazonian ungulate community of Northeastern Peru, which comprises the red brocket deer (Mazama americana), grey brocket deer (M. gouazoubira), collared peccary (Tayassu tajacu), white-lipped peccary (T. pecari), and lowland tapir (Tapirus terrest...

journal_title：Oecologia

authors： Bodmer RE

更新日期：1991-01-01 00:00:00

abstract：:In a typical Dutch polder landscape the effects of nutrient transport from cultivated grassland to mesotrophic fen communities were studied. In a comparative approach, biomass production and nutrient (N, P and K) uptake were determined monthly in four fens and a hayfield differeing in productivity and species composit...

journal_title：Oecologia

authors： Verhoeven JT,van Beek S,Dekker M,Storm W

更新日期：1983-10-01 00:00:00

abstract：:Adaptive within-clutch allocation of resources by laying females is an important focus of evolutionary studies. However, the critical assumption of these studies, namely that within-clutch egg-size deviations affect offspring performance, has been properly tested only rarely. In this study, we investigated effects of ...

journal_title：Oecologia

authors： Krist M,Remes V,Uvírová L,Nádvorník P,Bures S

更新日期：2004-06-01 00:00:00

abstract：:Senecio vulgaris from ruderal habitats may colonise crop fields and persist in the new environment. Persistence may occur through phenotypic plasticity or genetic differentiation. In the presence of genetic variation, differential responses of life history traits to selection may lead to local adaptation. A reciprocal...

journal_title：Oecologia

authors： Leiss KA,Müller-Schärer H

更新日期：2001-07-01 00:00:00