Incidence of diapause varies among populations of Daphnia pulicaria.

abstract：:Developing eggs of Metrioptera roeseli HGB. have an obligate "embryonic" diapause in stage 23 and a facultative "initial" diapause in stage 4. Initial diapause is lacking when the ovipositing females are kept at long day photoperiod (LD 16/8), but is induced at LD 14/10 and LD 8/16. When natural light conditions are g...

journal_title：Oecologia

authors： Ingrisch S

更新日期：1984-02-01 00:00:00

abstract：:Resource supply and pollen delivery are often thought to equally limit seed production in animal-pollinated plants. At equilibrium, plants should show no response to experimental pollen supplementation because resources limit seed set above the current level of pollen attraction, while experimental reduction in pollen...

journal_title：Oecologia

authors： Ornelas JF,Lara C

更新日期：2009-07-01 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：:Evaluation of size-dependent variation in statoblast numbers in Plumatella repens indicates that this freshwater bryozoan employs divergent strategies in dispersing its asexual offspring in space and time. While the numbers of sessoblasts which were cemented to local substrates did not vary per unit ramet size, number...

journal_title：Oecologia

authors： Karlson RH

更新日期：1992-03-01 00:00:00

abstract：:Among 13 tropical tree species on Barro Colorado Island, species with high seedling mortality rates during the first year in shade had higher reltive growth rates (RGR) from germination to 2 months in both sun (23% full sun) and shade [2%, with and without lowered red: far red (R:FR) ratio] than shade tolerant species...

journal_title：Oecologia

authors： Kitajima K

更新日期：1994-08-01 00:00:00

abstract：:Natural regeneration of abandoned farmland provides an important opportunity to contribute to global reforestation targets, including the Bonn Challenge. Of particular importance are the montane tropics, where a long history of farming, frequently on marginal soils, has rendered many ecosystems highly degraded and hot...

journal_title：Oecologia

authors： Hethcoat MG,King BJ,Castiblanco FF,Ortiz-Sepúlveda CM,Achiardi FCP,Edwards FA,Medina C,Gilroy JJ,Haugaasen T,Edwards DP

更新日期：2019-10-01 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 aquatic larvae of two species of salamanders coexist as a result of differences in their competitive abilities: Ambystoma talpoideum is a superior aggressor, whereas A. maculatum is a superior forager. I examined the behavioral mechanisms that permit these species to coexist with their predatory congener, A. opacu...

journal_title：Oecologia

authors： Walls SC

更新日期：1995-01-01 00:00:00

abstract：:The effects of competitive suppression by vines on the non-vine plant community have received little attention in temperate habitats. This study investigated the impact vines have on their herbaceous hosts in a wetland community at two soil fertility levels. Plots in an oligohaline marsh were treated in a 2 × 2 factor...

journal_title：Oecologia

authors： Gough L,Grace JB

更新日期：1997-10-01 00:00:00

abstract：:Festuca idahoensis (Idaho fescue) is a perennial caespitose grass, common in semi-arid rangelands of the Intermountain West. To determine how individuals are recruited into a population, we studied two long-term monitoring plots that were established in 1937 at the Northern Great Basin Experimental Range in southeaste...

journal_title：Oecologia

authors： Liston A,Wilson BL,Robinson WA,Doescher PS,Harris NR,Svejcar T

更新日期：2003-10-01 00:00:00

abstract：:Climate change is driving species range shifts worldwide. However, physiological responses related to distributional changes are not fully understood. Oceanographers have reported an increase in ocean temperature in the northwest Iberian Peninsula that is potentially related to the decline in some cold-temperate inter...

journal_title：Oecologia

authors： Martínez B,Arenas F,Rubal M,Burgués S,Esteban R,García-Plazaola I,Figueroa FL,Pereira R,Saldaña L,Sousa-Pinto I,Trilla A,Viejo RM

更新日期：2012-10-01 00:00:00

abstract：:Eight species of carabids (six of them represented by two subpopulations) were sampled. It appeared that the mean number of ripe eggs in the ovaries could be regressed on the specific body weight (ranging from 20 to 285 mg dry wt.): the mean decreased in heavier species, and was higher in the autumn breeders than in t...

journal_title：Oecologia

authors： Grüm L

更新日期：1984-12-01 00:00:00

abstract：:Damaged cotton plants in which reproductive organs were manually removed to simulate shedding induced by Helicoverpa spp. (Lepidoptera) were compared with undamaged controls grown under contrasting availability of resources. Plant growth and partitioning were analysed and fruit mass was taken as a measure of compensat...

journal_title：Oecologia

authors： Sadras VO

更新日期：1996-06-01 00:00:00

abstract：:Temperature regulation and oxygen consumption were examined in two species of grasshoppers: Melanoplus sanguinipes from cold alpine tundra at elevation 3,800 m, and Trimerotropis pallidipennis from hot desert habitats at elevation 250 m. Both species utilized behavioral thermoregulation to keep body temperature (T b )...

journal_title：Oecologia

authors： Chappell MA

更新日期：1983-01-01 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：:The impact of the xylem-tapping mistletoe Phoradendron juniperinum on the nitrogen and water relations of its host Juniperus osteosperma was investigated under natural field conditions. Leaf conductance, leaf water potential, and leaf Kjeldahl nitrogen contents were followed through the growing season on mistletoes, i...

journal_title：Oecologia

authors： Ehleringer JR,Cook CS,Tieszen LL

更新日期：1986-01-01 00:00:00

abstract：:Florivores are present in many pollination systems and can have direct and indirect effects on both plants and pollinators. Although the impact of florivores are commonly examined in facultative pollination mutualisms, their effects on obligate mutualism remain relatively unstudied. Here, we used experimental manipula...

journal_title：Oecologia

authors： Althoff DM,Xiao W,Sumoski S,Segraves KA

更新日期：2013-12-01 00:00:00

abstract：:Carbon isotopes are commonly used in trophic ecology to estimate consumer diet composition. This estimation is complicated by the fact that lipids exhibit a more depleted carbon signature (δ13C) than other macromolecules, and are often found at different concentrations among individual organisms. Some researchers argu...

journal_title：Oecologia

authors： Arostegui MC,Schindler DE,Holtgrieve GW

更新日期：2019-12-01 00:00:00

abstract：:Although the selective loss of individuals susceptible to disease can favor the evolution of female preference for older males, the interrelationship between age, infection, longevity, and mating success remains poorly characterized in natural populations. In a longitudinal study of 61 male common yellowthroats (Geoth...

journal_title：Oecologia

authors： Freeman-Gallant CR,Taff CC

更新日期：2017-08-01 00:00:00

abstract：:This is the first study to investigate whether scatter-hoarding behavior, a conditional mutualism, can be disrupted by forest fragmentation. We examined whether acouchies (Myoprocta acouchy, Rodentia) and agoutis (Dasyprocta leporina, Rodentia) changed scatter-hoarding behavior toward seeds of Astrocaryum aculeatum (A...

journal_title：Oecologia

authors： Jorge ML,Howe HF

更新日期：2009-10-01 00:00:00

abstract：:Dolman (1995) measured the intake rates of snow buntings feeding on seed patches at difference bird densities, for each of two different seed densities. Interference occurred in the low food density treatment, with intake rate declining at high bird densities, but did not occur in the high food density treatment. Dolm...

journal_title：Oecologia

authors： Moody AL,Ruxton GD

更新日期：1996-11-01 00:00:00

abstract：:From 1977 through 1983 we conducted experiments on a desert rodent community where supplemental seeds were added or certain rodent species and ants were removed from 0.25-ha fenced plots in a Chihuahuan Desert site in southeastern Arizona, USA. In this paper we examine the patterns of microhabitat use relative to vege...

journal_title：Oecologia

authors： Bowers MA,Thompson DB,Brown JH

更新日期：1987-04-01 00:00:00

abstract：:Canopy structure and tree species diversity, shaped by succession, disturbance, and community composition, are linked to numerous ecosystem functions, including net primary production (NPP). Understanding of how ecosystem structural metrics are interrelated and mechanistically link to NPP, however, is incomplete. We c...

journal_title：Oecologia

authors： Scheuermann CM,Nave LE,Fahey RT,Nadelhoffer KJ,Gough CM

更新日期：2018-10-01 00:00:00

abstract：:Small marine invertebrates often use sessile organisms as microhabitats, which can provide food sources and/or serve as refugees from predators. Because of the availability of external food items such as epibionts and detritus in the marine environment, these invertebrates may not depend on the sessile organisms as so...

journal_title：Oecologia

authors： Kumagai NH

更新日期：2008-04-01 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：:With multiple species introductions and rapid global changes, there is a need for comprehensive invasion models that can predict community responses. Evidence suggests that abiotic constraint, propagule pressure, and biotic resistance of resident species each determine plant invasion success, yet their interactions ar...

journal_title：Oecologia

authors： Byun C,de Blois S,Brisson J

更新日期：2015-05-01 00:00:00

abstract：:Intensive harvesting of native eucalypt forests is carried out in the Eden area in the south east coastal region of New South Wales, Australia. Soil nutrient capital and nutrient removals in forest harvesting were estimated together with potential impacts of these removals on the nutrient capital balance. Soils were a...

journal_title：Oecologia

authors： Turner J,Lambert MJ

更新日期：1986-08-01 00:00:00

abstract：:Crucian carp (Carassius carassius) increases in body depth in response to chemical cues from piscivores and the deeper body constitutes a morphological defence against gape-limited piscivores. In the field, deep-bodied individuals suffer a density-dependent cost when competing with shallow-bodied conspecifics. Here, w...

journal_title：Oecologia

authors： Pettersson LB,Brönmark C

更新日期：1999-10-01 00:00:00

abstract：:I followed the within-generation distribution of a chewing specialist herbivore, the water-lily beetle, on individually marked leaves of the yellow water-lily. Yellow water-lilies produced new leaves steadily throughout the growth season. Average leaf longevity was 3-4 weeks, much shorter than the developmental time o...

journal_title：Oecologia

authors： Kouki J

更新日期：1991-09-01 00:00:00

abstract：:This study assessed the effect of nutrient enrichment on organic matter breakdown in an alpine springbrook, using alder leaf packs to which phosphorus and nitrogen were added in the form of slow-release fertilizer briquettes. The breakdown of leaf packs with nutrients added (k=0.0284 day-1) was significantly faster th...

journal_title：Oecologia

authors： Robinson CT,Gessner MO

更新日期：2000-02-01 00:00:00