Limiting similarity and the intensity of competitive effects on the mottled sculpin, Cottus bairdi, in experimental stream communities.

abstract：:Carbon isotope ratios, photosynthesis, and transpiration were measured on a xylem-tapping mistletoe (Phoradendron juniperinum) and its host (Juniperus osteosperma) in southern Utah, USA. For host tissues, the carbon isotope ratios agreed with theoretical values predicted from gas exchange observations. However, for mi...

journal_title：Oecologia

authors： Marshall JD,Ehleringer JR

更新日期：1990-09-01 00:00:00

abstract：:In abandoned or extensively managed grasslands, the mechanisms involved in pioneer tree species success are not fully explained. Resource competition among plants and microclimate modifications have been emphasised as possible mechanisms to explain variation of survivorship and growth. In this study, we evaluated a nu...

journal_title：Oecologia

authors： Picon-Cochard C,Coll L,Balandier P

更新日期：2006-06-01 00:00:00

abstract：:Although numerous studies have reported reproductive senescence in wild animal populations, we still know very little on inter-individual differences in rates of ageing and on the factors accounting for these differences. To investigate age-related variation in breeding success in a natural population of Alpine chamoi...

journal_title：Oecologia

authors： Tettamanti F,Grignolio S,Filli F,Apollonio M,Bize P

更新日期：2015-05-01 00:00:00

abstract：:Sabal palmetto (Walt.) Lodd. ex Schultes (cabbage palm) is an arborescent palm common in many plant communities throughout Florida, U.S.A., and the Caribbean. Although its seedlings grow very slowly in forest understories, they survive damage and defoliation well, and the species may increase in dominance following di...

journal_title：Oecologia

authors： McPherson K,Williams K

更新日期：1998-12-01 00:00:00

abstract：:A large number of herbaceous and woody plants from tropical woodland, savanna, and monsoon forest were analysed to determine the impact of environmental factors (nutrient and water availability, fire) and biological factors (microbial associations, systematics) on plant delta(15)N values. Foliar delta(15)N values of h...

journal_title：Oecologia

authors： Schmidt S,Stewart GR

更新日期：2003-03-01 00:00:00

abstract：:Intraspecific and intrasexual variation in home range size, body mass and ecological productivity is examined in three selected species of Carnivora (Felis rufus: Canis latrans; Ursus americanus), reflecting different diets. We then compare the intraspecific results with prior cross-species studies. Home range size an...

journal_title：Oecologia

authors： Gompper ME,Gittleman JL

更新日期：1991-09-01 00:00:00

abstract：:The climatic control of productivity for two populations of the lichen Cetraria cucullata (Bell.) Ach. growing in the arctic tundra of northern Alaska (70°28'N, 157°23'W) was examined. Respiratory losses of carbon vary with tissue temperature, tissue water content, and time since wetting. Potential net photosynthetic ...

journal_title：Oecologia

authors： Lechowicz MJ

更新日期：1981-08-01 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：:Monk parakeets have been introduced into North America within the past 15 years and are apparently becoming established in several geographical regions. Several physiological responses of monk parakeets related to climatic tolerance were examined, and it is concluded that the species is equipped physiologically to occ...

journal_title：Oecologia

authors： Weathers WW,Caccamise DF

更新日期：1975-12-01 00:00:00

abstract：:Restoration of degraded landscapes through replantings of native vegetation has been proceeding in response to habitat loss and fragmentation and plummeting biodiversity. Little is known about whether the investments in ecological restoration have resulted in biodiversity benefits. We evaluated the potential of restor...

journal_title：Oecologia

authors： Selwood K,Mac Nally R,Thomson JR

更新日期：2009-03-01 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：:Ecosystem-wide effects of introduced brown trout (Salmo trutta L.) and native river galaxias (Galaxiaseldoni McDowall) were studied by analysing ecosystem production budgets for two adjacent tributaries of a grassland stream-system in the South Island of New Zealand. One tributary was inhabited by brown trout, the oth...

journal_title：Oecologia

authors： Huryn AD

更新日期：1998-06-01 00:00:00

abstract：:Effects of temperature changes on phytoplankton communities seem to be highly context-specific, but few studies have analyzed whether this context specificity depends on differences in the abiotic conditions or in species composition between studies. We present an experiment that allows disentangling the contribution ...

journal_title：Oecologia

authors： Striebel M,Schabhüttl S,Hodapp D,Hingsamer P,Hillebrand H

更新日期：2016-11-01 00:00:00

abstract：:The operative temperature of the environment was estimated for starlings using hollow, unheated taxidermic mounts. On average, adults foraging in full sun were characterized by shorter foraging bouts than those adults foraging in full shade. Simultaneous observations of air temperature, operative temperature, and the ...

journal_title：Oecologia

authors： Clark L

更新日期：1987-01-01 00:00:00

abstract：:To investigate the physiological, behavioral, and genetic contributions to growth rate, we studied the thermal sensitivity of growth rate in hatchlings of the iguanid lizards Sceloporus occidentalis and S. graciosus in the laboratory. We used a cycling thermal regime patterned after thermal environments found in natur...

journal_title：Oecologia

authors： Sinervo B,Adolph SC

更新日期：1989-03-01 00:00:00

abstract：:The fate of individual plants of Helianthus annuus was monitored in populations sown at a density of 650 seeds m-2. Ninety six percent of the seeds germinated but only fifty two percent of the seedlings survived to the end of the experiment due to self-thinning. Whilst the seedlings emerged over only four days the cot...

journal_title：Oecologia

authors： Watkinson AR,Lonsdale WM,Firbank LG

更新日期：1983-02-01 00:00:00

abstract：:We contrasted the seasonal use of simulated large rain events (24 mm) by three native species of the arid Colorado Plateau: the perennial grass Hilaria jamesii and two shrubs Artemesia filifolia and Coleogyne ramosissima. Deuterium-enriched water was used to distinguish shallow "pulse" water from water in deeper soil ...

journal_title：Oecologia

authors： Schwinning S,Davis K,Richardson L,Ehleringer JR

更新日期：2002-02-01 00:00:00

abstract：:When two ecosystem engineers share the same natural environment, the outcome of their interaction will be unclear if they have contrasting habitat-modifying effects (e.g., sediment stabilization vs. sediment destabilization). The outcome of the interaction may depend on local environmental conditions such as season or...

journal_title：Oecologia

authors： Govers LL,Pieck T,Bouma TJ,Suykerbuyk W,Smolders AJ,van Katwijk MM

更新日期：2014-06-01 00:00:00

abstract：:Small changes in environmental conditions can unexpectedly tip an ecosystem from one community type to another, and these often irreversible shifts have been observed in semi-arid grasslands, freshwater lakes and ponds, coral reefs, and kelp forests. A commonly accepted explanation is that these ecosystems contain mul...

journal_title：Oecologia

authors： Petraitis PS,Methratta ET,Rhile EC,Vidargas NA,Dudgeon SR

更新日期：2009-08-01 00:00:00

abstract：:According to ecological stoichiometry (ES), the growth of a consumer with abundant resources should increase as body and resource stoichiometry become more similar. However, for organisms with complex life cycles involving distinct changes in biology, nutrient demands might change in response to ontogenetic changes in...

journal_title：Oecologia

authors： Stephens JP,Stoler AB,Sckrabulis JP,Fetzer AJ,Berven KA,Tiegs SD,Raffel TR

更新日期：2017-01-01 00:00:00

abstract：:A comparison of photosynthetic adaptations of desert ephemerals from sun and shade environments has shown differences in the magnitude and timing of maximum CO2 assimilation. Photosynthetic rates of species from the sun environment were significantly higher, and maximum observed levels occurred both earlier in the day...

journal_title：Oecologia

authors： Wallace CS,Szarek SR

更新日期：1981-10-01 00:00:00

abstract：:Predictions of plant responses to climate change are frequently based on organisms' presence in warmer locations, which are then assumed to reflect future performance in cooler areas. However, as plant life stages may be affected differently by environmental changes, there is little empirical evidence that this approa...

journal_title：Oecologia

authors： Ibáñez I,Katz DSW,Lee BR

更新日期：2017-07-01 00:00:00

abstract：:The induction of diapause can be adaptive for egg survival during unfavorable conditions, while direct development can be advantageous under favorable conditions by allowing additional generations to exploit abundant resources. Therefore, the physiological capability of a female to respond to environmental cues indica...

journal_title：Oecologia

authors： Huestis DL,Marshall JL

更新日期：2006-01-01 00:00:00

abstract：:It has been suggested that a heterogeneous environment enhances species richness and allows for the coexistence of species. However, there is increasing evidence that environmental heterogeneity can have no effect or even a negative effect on plant species richness and plant coexistence at a local scale. We examined w...

journal_title：Oecologia

authors： Douda J,Doudová-Kochánková J,Boublík K,Drašnarová A

更新日期：2012-06-01 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：:The turnover of plant biomass largely determines the amount of energy flowing through an ecosystem and understanding the processes that regulate turnover has been of interest to ecologists for decades. Leaf life span theory has proven useful in explaining patterns of leaf turnover in relation to resource availability,...

journal_title：Oecologia

authors： Rodriguez GE,Reed DC,Holbrook SJ

更新日期：2016-10-01 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：:Both top-down and bottom-up processes are common in terrestrial ecosystems, but how these opposing forces interact and vary over time is poorly understood. We tested the variation of these processes over seasonal time in a natural temperate zone grassland, a field site characterized by strong seasonal changes in abiot...

journal_title：Oecologia

authors： Boyer AG,Swearingen RE,Blaha MA,Fortson CT,Gremillion SK,Osborn KA,Moran MD

更新日期：2003-07-01 00:00:00

abstract：:At Bakers Hill, differential winter mortality of juvenile slowgrowing Amphibolurus ornatus is correlated with the incidence of frosts (Bradshaw, 1971). The present study shows that the probability an individual will spend the night in a refuge that is safe from the lethal effect of a frost is directly related to the i...

journal_title：Oecologia

authors： Baverstock PR

更新日期：1978-01-01 00:00:00

abstract：:In vernal ponds in the boreal region, egg-over-wintering Agabus species form a guild that feeds mainly on larvae and pupae of aedine mosquitoes. The regular co-existence of very similar Agabus species indicates local communities not structured by interspecific competition. However, the lower number of species in local...

journal_title：Oecologia

authors： Nilsson AN,Söderström O

更新日期：1988-06-01 00:00:00