Effects of floral restrictiveness and stigma size on heterospecific pollen receipt in a prairie community.

abstract：:Although many studies now examine how multiple factors influence the dynamics of herbivore populations, few studies explicitly attempt to document where and when each is important and how they vary and interact. In fact, how temporal variation in top-down (natural enemies) and bottom-up (host plant resources) factors ...

journal_title：Oecologia

authors： Gratton C,Denno RF

更新日期：2003-03-01 00:00:00

abstract：:The potential production of estuarine interstitial microalgae from two tidal flats differing in sediment texture was determined manometrically. Sediment cores from the Southbeach tidal flat showed a maximum amount of productivity in the lower intertidal zone whereas sediment cores from Sally's Bend showed no productio...

journal_title：Oecologia

authors： Riznyk RZ,Phinney HK

更新日期：1972-09-01 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：:The effects of simulated goose grazing on Phleum pratense plants were tested in an Iceland hayfield during the spring goose staging period (19 April-11 May 1997). Plants in an area exclosed from the influence of grazing and the nutrient effects of goose faeces were subject to the removal of the youngest lamina once, t...

journal_title：Oecologia

authors： Fox AD,Kristiansen JN,Stroud DA,Boyd H

更新日期：1998-08-01 00:00:00

abstract：:Seasonal measurements of microclimatic conditions were compared to seasonal indices of leaf structural components and plant water relations in Prosopis glandulosa var. torryana. P. glandulosa had two short periods of leaf production which resulted in two distinct even aged cohorts of leaves. The two leaf cohorts (summ...

journal_title：Oecologia

authors： Nilsen ET,Sharifi MR,Rundel PW,Virginia RA

更新日期：1986-04-01 00:00:00

abstract：:Nitrogen use efficiency (NUE) has been widely used to study the relationship between nitrogen uptake and dry mass production in the plant. As a subsystem of plant nitrogen use efficiency (NUE), I have defined leaf-level NUE as the surplus production (gross production minus leaf respiration) per unit amount of nitrogen...

journal_title：Oecologia

authors： Hirose T

更新日期：2012-07-01 00:00:00

abstract：:Previous publications have reported on investigations of CO2 exchange in the desert lichenRamalina maciformis both in its natural habitat in the Negev and in the laboratory. Utilizing laboratory data, net photosynthesis and dark respiration were expressed as mathematical functions of the most important environmental f...

journal_title：Oecologia

authors： Lange OL,Geiger IL,Schulze E-

更新日期：1977-09-01 00:00:00

abstract：:Climate change models predict that the range of the world's smallest tortoise, Homopus signatus signatus, will aridify and contract in the next decades. To evaluate the effects of annual variation in rainfall on the growth of H. s. signatus, we recorded annual growth rates of wild individuals from spring 2000 to sprin...

journal_title：Oecologia

authors： Loehr VJ,Hofmeyr MD,Henen BT

更新日期：2007-08-01 00:00:00

abstract：:The effect of feeding of the mirid bug Capsodes infuscatus on fruit production of the geophyte Asphodelus ramosus was studied in a desert area in Israel. Plant and bug densities and percent loss of fruit production were measured in a relatively dry lower colluvial slope, an intermediate upper colluvial slope, and a re...

journal_title：Oecologia

authors： Ayal Y,Izhaki I

更新日期：1993-04-01 00:00:00

abstract：:Bacterial biofilms are increasingly seen as important for the successful settlement of marine invertebrate larvae. Here we tested the effects of biofilms on settlement of the sea urchin Heliocidaris erythrogramma. Larvae settled on many surfaces including various algal species, rocks, sand and shells. Settlement was r...

journal_title：Oecologia

authors： Huggett MJ,Williamson JE,de Nys R,Kjelleberg S,Steinberg PD

更新日期：2006-10-01 00:00:00

abstract：:Studies of predation by roach (Rutilus rutilus) on zebra mussel (Dreissena polymorpha) in a large, eutrophic lake showed that there was a clearly marked size threshold (∼ 160 mm SL) above which roach began to feed on mussels. Roach preying on various sizes of mussels selected them in proportions different from their a...

journal_title：Oecologia

authors： Prejs A,Lewandowski K,Stańczykowska-Piotrowska A

更新日期：1990-06-01 00:00:00

abstract：:Natural history collections are now being championed as key to broad ecological studies, especially those involving human impacts in the Anthropocene. However, collections are going through a crisis that threatens their present and future value, going beyond underfunding/understaffing to a more damaging practice: curr...

journal_title：Oecologia

authors： Salvador RB,Cunha CM

更新日期：2020-03-01 00:00:00

abstract：:The epiphytic orchid, Dimerandra emarginata, occurs in habitats characterized by high light intensities and very variable water supply. Long-term observations of the water status indicate that this species experienced at least moderate water stress over most of the year. Well-watered, it showed high rates of net CO2 u...

journal_title：Oecologia

authors： Zotz G,Tyree MT

更新日期：1996-07-01 00:00:00

abstract：:Tooth enamel apatite carbonate carbon and oxygen isotope ratios of modern kangaroos (Macropus spp.) collected on a 900-km latitudinal transect spanning a C(3)-C(4) transition zone were analysed to create a reference set for palaeoenvironmental reconstruction in southern Australia. The carbon isotope composition of ena...

journal_title：Oecologia

authors： Brookman TH,Ambrose SH

更新日期：2013-02-01 00:00:00

abstract：:Warming-induced nutrient enrichment in the Arctic may lead to shifts in leaf-level physiological properties and processes with potential consequences for plant community dynamics and ecosystem function. To explore the physiological responses of Arctic tundra vegetation to increasing nutrient availability, we examined ...

journal_title：Oecologia

authors： Prager CM,Boelman NT,Eitel JUH,Gersony JT,Greaves HE,Heskel MA,Magney TS,Menge DNL,Naeem S,Shen C,Vierling LA,Griffin KL

更新日期：2020-03-01 00:00:00

abstract：:In tropical dry forests, a high interspecific variation in the strategies of fruiting phenology has been documented. Therefore, phenological responses may be mediated by influence of environmental variables, functional plant attributes or phylogenetic inertia. During 2 years, we recorded the fruiting phenology of 151 ...

journal_title：Oecologia

authors： Cortés-Flores J,Cornejo-Tenorio G,Urrea-Galeano LA,Andresen E,González-Rodríguez A,Ibarra-Manríquez G

更新日期：2019-01-01 00:00:00

abstract：:Plasticity in life history strategies can be advantageous for species that occupy spatially or temporally variable environments. We examined how phenotypic plasticity influences responses of the mole salamander, Ambystoma talpoideum, to disturbance events at the St. Marks National Wildlife Refuge (SMNWR), FL, USA from...

journal_title：Oecologia

authors： Davis CL,Miller DA,Walls SC,Barichivich WJ,Riley J,Brown ME

更新日期：2017-03-01 00:00:00

abstract：:Plant physiological strategies of carbon (C) and nitrogen (N) uptake and metabolism are often regarded as outcomes of environmental selection. This is likely true, but the role of evolutionary history may also be important in shaping patterns of functional diversity. Here, we used leaf C and N stable isotope ratios (δ...

journal_title：Oecologia

authors： Goud EM,Sparks JP

更新日期：2018-08-01 00:00:00

abstract：:In this paper we test three plant species for the inducibility of their alkaloid production. The plants were heavily damaged by cutting off 50% of their leaf surface using a pair of scissors. The cut-off leaf tips were used as controls for possible diurnal fluctuations. After 3, 6, 12, 24 and 48 h, respectively, the l...

journal_title：Oecologia

authors： van Dam NM,van der Meijden E,Verpoorte R

更新日期：1993-09-01 00:00:00

abstract：:Resource selection is a function of interactions of organisms (competition, predation) as well as characteristics of the resource and organisms. I provide a quantitative model that integrates these factors. I use the model to predict profitability of fruits to tropical birds, but the model and its predictions are appl...

journal_title：Oecologia

authors： Martin TE

更新日期：1985-07-01 00:00:00

abstract：:Evidence was given that the freezing tolerance of Halimione portulacoides, a wintergreen halophyte, can be explained by protection of sensitive cellular membranes in vivo. Experiments were done with cloned cuttings of a plant from the German North Sea coast. One series received no NaCl (O-plants) the other 3% NaCl (Na...

journal_title：Oecologia

authors： Maier M,Kappen L

更新日期：1979-01-01 00:00:00

abstract：:Indirect interactions among plant species mediated by frugivorous animals can be central to population and community dynamics, since the successful seed dispersal of species may depend on facilitative or competitive interactions with heterospecific plants. Yet, empirical evidence on these interactions is very scarce a...

journal_title：Oecologia

authors： Rumeu B,Álvarez-Villanueva M,Arroyo JM,González-Varo JP

更新日期：2019-07-01 00:00:00

abstract：:Carotenoids are antioxidant pigments involved in several physiological processes and signalling in animals that cannot synthesise them and therefore must acquire them from food. We experimentally investigated the effects of carotenoid availability in the diet during egg laying on antioxidant deposition in egg yolk and...

journal_title：Oecologia

authors： Biard C,Surai PF,Møller AP

更新日期：2005-06-01 00:00:00

abstract：:Long-term fertilization of acidic tussock tundra has led to changes in plant species composition, increases in aboveground production and biomass and substantial losses of soil organic carbon (SOC). Root litter is an important input to SOC pools, although little is known about fine root demography in tussock tundra. I...

journal_title：Oecologia

authors： Sullivan PF,Sommerkorn M,Rueth HM,Nadelhoffer KJ,Shaver GR,Welker JM

更新日期：2007-09-01 00:00:00

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：:Organisms normally grow at a sub-maximal rate. After experiencing a period of arrested growth, individuals often show compensatory growth responses by modifying their life-history, behaviour and physiology. However, the strength of compensatory responses may vary across broad geographic scales as populations differ in...

journal_title：Oecologia

authors： Orizaola G,Dahl E,Laurila A

更新日期：2014-01-01 00:00:00

abstract：:Global climate models forecast an increase in the frequency and intensity of extreme weather events, including severe droughts. Based on multi-year relationships between precipitation amount and aboveground annual net primary production (ANPP), semi-arid grasslands are projected to be among the most sensitive ecosyste...

journal_title：Oecologia

authors： Cherwin K,Knapp A

更新日期：2012-07-01 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：:The photosynthetic incorporation of H14CO3- by the alga Platymonas subcordiformis decreased with increasing concentrations of NaCl in the medium. There was no correlation between the response of P. subcordiformis to salinity in high or low NaCl-concentrations in the growing solution. When other osmotic substances were...

journal_title：Oecologia

authors： Kirst GO

更新日期：1975-09-01 00:00:00

abstract：:It is important to understand the role that different predators can have to be able to predict how changes in the predator assemblage may affect the prey community and ecosystem attributes. We tested the effects of different stream predators on macroinvertebrates and ecosystem attributes, in terms of benthic algal bio...

journal_title：Oecologia

authors： Nilsson E,Olsson K,Persson A,Nyström P,Svensson G,Nilsson U

更新日期：2008-10-01 00:00:00