Determinants of isotopic coupling of CO2 and water vapour within a Quercus petraea forest canopy.

abstract：:Data from the US/IBP Desert Biome validation studies indicate that above-ground production and biomass allocated to reproduction in Larrea tridentata vary from one year to another depending upon the timing and extent of soil-moisture availability. In an attempt to verify these observations and determine to what extent...

journal_title：Oecologia

authors： Cunningham GL,Syvertsen JP,Reynolds JF,Willson JM

更新日期：1979-01-01 00:00:00

abstract：:I used a combination of laboratory experiments and field surveys to examine the role that population-specific predation risk may play in shaping the life history strategy of a stream-dwelling isopod Lirceus fontinalis. Two focal populations were identified that were exposed to different predator types. The first popul...

journal_title：Oecologia

authors： Sparkes TC

更新日期：1996-04-01 00:00:00

abstract：:A central point in life history theory is that parental investment in current reproduction should be balanced by the costs in terms of residual reproductive value. Long-lived seabirds are considered fixed investors, that is, parents fix a specific level of investment in their current reproduction independent to the br...

journal_title：Oecologia

authors： Navarro J,González-Solís J

更新日期：2007-02-01 00:00:00

abstract：:Variation in body size (weight) is examined across the order Carnivora in relation to taxonomy (phylogeny), latitude, habitat, zonation, activity cycle, diet, prey size, and prey diversity. Significant differences in body weight are observed with respect to family membership. Some of these differences may be explained...

journal_title：Oecologia

authors： Gittleman JL

更新日期：1985-12-01 00:00:00

abstract：:The effects of defoliation of alder (Alnus glutinosa) on subsequent herbivory by alder leaf beetle (Agelastica alni) were studied in ten alder stands in northern Germany. At each site, one tree was manually defoliated (c. 20% of total foliage) to simulate herbivory. Subsequent damage by A. alni was assessed on ten ald...

journal_title：Oecologia

authors： Dolch R,Tscharntke T

更新日期：2000-12-01 00:00:00

abstract：: Habitat fragmentation is becoming increasingly common, yet, the effect of habitat spatial structure on population dynamics remains undetermined for most species. Populations of a single species found in fragmented and nonfragmented habitat present a rare opportunity to examine the effect of habitat spatial structure ...

journal_title：Oecologia

authors： Peacock MM,Smith AT

更新日期：1997-11-01 00:00:00

abstract：:To date, coral death has been the most conspicuous outcome of warming tropical seas, but as temperatures stabilize at higher values, the consequences for the corals remaining will be mediated by their demographic responses to the sub-lethal effects of temperature. To gain insight into the nature of these responses, he...

journal_title：Oecologia

authors： Edmunds PJ

更新日期：2005-12-01 00:00:00

abstract：:Chemical cues that evoke anti-predator developmental changes have received considerable attention, but it is not known to what extent prey use information from the smell of predators and from cues released through digestion. We conducted an experiment to determine the importance of various types of cues for the adjust...

journal_title：Oecologia

authors： Hettyey A,Tóth Z,Thonhauser KE,Frommen JG,Penn DJ,Van Buskirk J

更新日期：2015-11-01 00:00:00

abstract：:A three year study of Senecio keniodendron (Compositae), a giant rosette species of the alpine zone of Mt. Kenya, demonstrated that individuals which reproduce are more likely to die, and less likely to reproduce in the future if they do survive, than are vegetative individuals of the same size. However, if an individ...

journal_title：Oecologia

authors： Smith AP,Young TP

更新日期：1982-11-01 00:00:00

abstract：:Facultative diapause should be favoured by natural selection in temporary variable habitats. Diapause patterns are evolutionary constrained because producing diapause is resource demanding, which might have implications for competitive dynamics and competitor coexistence through mechanisms such as the storage effect. ...

journal_title：Oecologia

authors： Aránguiz-Acuña A,Ramos-Jiliberto R,Serra M

更新日期：2015-01-01 00:00:00

abstract：:The maintenance of separated diploid and polyploid populations within a contact zone is possible due to both prezygotic and postzygotic isolation mechanisms. Niche differentiation between two cytotypes may be an important prezygotic isolating mechanism and can be studied using reciprocal transplant experiments. We inv...

journal_title：Oecologia

authors： Raabová J,Fischer M,Münzbergová Z

更新日期：2008-12-01 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：:An "environmental productivity index" based on physiological responses to three environmental variables was used to predict the net productivity of a common succulent perennial of the Sonoran Desert, Agave deserti, on a monthly basis. Productivity was also independently measured in the field from dry weight changes. T...

journal_title：Oecologia

authors： Nobel PS

更新日期：1984-09-01 00:00:00

abstract：:Dry lichen thalli were enclosed in gas exchange chambers and treated with an air stream of high relative humidity (96.5 to near 100%) until water potential equilibrium was reached with the surrounding air (i.e., no further increase of weight through water vapor uptake). They were then sprayed with liquid water. The tr...

journal_title：Oecologia

authors： Lange OL,Kilian E,Ziegler H

更新日期：1986-12-01 00:00:00

abstract：:Breeding birds were censused along four elevational gradients in the Adirondack Mountains, New York, and the Green Mountains, Vermont. The bird communities of the four gradients were basically similar in species composition, richness and amplitude patterns. Three measures of species diversity decreased with increasing...

journal_title：Oecologia

authors： Able KP,Noon BR

更新日期：1976-09-01 00:00:00

abstract：:Sexual expression in hermaphroditic plants is often a function of environmental factors affecting individuals before or during flowering. I tested for the effects of floral herbivory and lack of pollination in early umbels on the relative proportions of hermaphroditic and staminate (male) flowers produced on later umb...

journal_title：Oecologia

authors： Lowenberg GJ

更新日期：1997-01-01 00:00:00

abstract：:Arbuscular mycorrhizal (AM) fungi are ubiquitous and ecologically important microbes in grasslands. Both the host plant species and soil properties have been suggested as potentially important factors structuring AM fungal communities based on studies within local field sites. However, characterizations of the communi...

journal_title：Oecologia

authors： Ji B,Bentivenga SP,Casper BB

更新日期：2012-01-01 00:00:00

abstract：:Northern hemispheric background concentrations of ozone are increasing, but few studies have assessed the ecological significance of these changes for grasslands of high conservation value under field conditions. We carried out a 3-year field experiment in which ozone was released at a controlled rate over three exper...

journal_title：Oecologia

authors： Wedlich KV,Rintoul N,Peacock S,Cape JN,Coyle M,Toet S,Barnes J,Ashmore M

更新日期：2012-04-01 00:00:00

abstract：:Photosynthetic induction under constant and fluctuating light conditions was investigated in intact leaves of Alocasia macrorrhiza and Toona australis, two species native to Australian rainforests. When leaves were exposed to saturating light following a long period at low light intensity, an induction period of 25-40...

journal_title：Oecologia

authors： Chazdon RL,Pearcy RW

更新日期：1986-07-01 00:00:00

abstract：:We studied the disturbance associated with prairie vole burrows and its effects on grassland plant diversity at the patch (1 m(2)) and metacommunity (>5 ha) scales. We expected vole burrows to increase patch-scale plant species diversity by locally reducing competition for resources or creating niche opportunities tha...

journal_title：Oecologia

authors： Questad EJ,Foster BL

更新日期：2007-08-01 00:00:00

abstract：:The ribulose-1,5-bis-phosphate (RBPC) 14CO2 fixation rate was measured at four different temperatures, 5°, 15°, 25° and 35° C, in three populations of Espeletia schultzii at different altitudes, 3100, 3550 and 4200 ma.s.l. The fixation rate increased with temperature increase in the populations studied. The population...

journal_title：Oecologia

authors： Castrillo M

更新日期：1995-02-01 00:00:00

abstract：:In order study C3 and C4 plant growth in atmospheric CO2 levels ranging from past through predicted future levels, Abutilon theophrasti (C3) and Amaranthus retroflexus (C4) were grown from seed in growth chambers controlled at CO2 partial pressures of 15 Pa (below Pleistocene minimum), 27 Pa (pre-industrial), 35 Pa (c...

journal_title：Oecologia

authors： Dippery JK,Tissue DT,Thomas RB,Strain BR

更新日期：1995-01-01 00:00:00

abstract：:Plant species composition is changing across many landscapes, but it is unclear how these changes affect habitat quality for animals. We used functional diversity and community-weighted mean (CWM) trait values for four plant traits (litter N, P, lignin and soluble phenolics) to explore how changes in plant species com...

journal_title：Oecologia

authors： Cohen JS,Rainford SK,Blossey B

更新日期：2014-04-01 00:00:00

abstract：:We investigated seasonality of gender differences in the patterns of flea infestation in nine rodent species to test if sex-biased parasitism in terms of mean abundance, species richness, prevalence and the level of aggregation (a) varies among hosts and between seasons, and (b) is linked to sexual size dimorphism. Se...

journal_title：Oecologia

authors： Krasnov BR,Morand S,Hawlena H,Khokhlova IS,Shenbrot GI

更新日期：2005-12-01 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：:Trophic cascades have become a dominant paradigm in ecology, yet considerable debate remains about the relative strength of density- (consumptive) and trait-mediated (non-consumptive) effects in trophic cascades. This debate may, in part, be resolved by considering prey experience, which shapes prey traits (through ge...

journal_title：Oecologia

authors： Wood ZT,Fryxell DC,Moffett ER,Kinnison MT,Simon KS,Palkovacs EP

更新日期：2020-03-01 00:00:00

abstract：:Global climate change is expected to affect terrestrial ecosystems in a variety of ways. Some of the more well-studied effects include the biogeochemical feedbacks to the climate system that can either increase or decrease the atmospheric load of greenhouse gases such as carbon dioxide and nitrous oxide. Less well-stu...

journal_title：Oecologia

authors： Butler SM,Melillo JM,Johnson JE,Mohan J,Steudler PA,Lux H,Burrows E,Smith RM,Vario CL,Scott L,Hill TD,Aponte N,Bowles F

更新日期：2012-03-01 00:00:00

abstract：:The principal function of isoprene biosynthesis in plants remains unclear, but emission rates are positively correlated with temperature and light, supporting a role for isoprene in maintaining photosynthesis under transient heat and light stress from sunflecks. Isoprene production is also inversely correlated with CO...

journal_title：Oecologia

authors： Way DA,Schnitzler JP,Monson RK,Jackson RB

更新日期：2011-05-01 00:00:00

abstract：: Field phenologies of high- (ca. 1500 m) and low- (ca. 500 m) altitude populations of the two most common European species of dung flies, Scathophaga stercoraria and Sepsis cynipsea, differ quite markedly due to differences in climate. To differentiate genetic adaptation due to natural selection and phenotypic plastic...

journal_title：Oecologia

authors： Blanckenhorn WU

更新日期：1997-02-01 00:00:00

abstract：:The use of habitat by female and male adult capercaillie Tetrao urogallus during summer and autumn was studied by comparing the distribution of radio locations of birds with the availability of habitat at forest stand, home range and landscape level in an area of the Bavarian Alps, Germany. Capercaillie preferred fore...

journal_title：Oecologia

authors： Storch I

更新日期：1993-08-01 00:00:00