Spatial heterogeneity in the relative impacts of foliar quality and predation pressure on red oak, Quercus rubra, arthropod communities.

abstract：:Invasion of non-native annuals across the Intermountain West is causing a widespread transition from perennial sagebrush communities to fire-prone annual herbaceous communities and grasslands. To determine how this invasion affects ecosystem function, carbon and water fluxes were quantified in three, paired sagebrush ...

journal_title：Oecologia

authors： Prater MR,Obrist D,Arnone JA 3rd,DeLucia EH

更新日期：2006-01-01 00:00:00

abstract：:The size of forest fragments, the use of land bordering fragments, and the distance of nests from an edge all affect the frequency of predation upon bird nests in Maine (USA), an area where the forest has been fragmented by roads, but not significantly reduced in area. We placed artificial nests containing quail eggs ...

journal_title：Oecologia

authors： Small MF,Hunter ML

更新日期：1988-06-01 00:00:00

abstract：:The seasonal changes in plant community architecture and its importance to insect herbivores during the ruderal-early stages of an experimental secondary successional gradient are described. The dominant group of insect herbivores, the Auchenorrhyncha (Hemiptera: Homoptera) are considered together with their host plan...

journal_title：Oecologia

authors： Stinson CS,Brown VK

更新日期：1983-01-01 00:00:00

abstract：:Leaf surface conductance and apparent photosynthesis were measured during late summer and autumn on saplings and sprouts of pin cherry (Prunus pensylvanica), yellow birch (Betula alleghaniensis), American beech (Fagus grandifolia), and sugar maple (Acer saccharum) naturally revegetating a site in the northern hardwood...

journal_title：Oecologia

authors： Amthor JS,Gill DS,Bormann FH

更新日期：1990-08-01 00:00:00

abstract：:To establish a general model for the removal rate of periphyton by grazers, we identified 27 publications in which removal rates could be estimated from grazer enclosure or exclosure experiments. When all the measurements obtained under different experimental conditions were extracted, these publications provided 107 ...

journal_title：Oecologia

authors： Cattaneo A,Mousseau B

更新日期：1995-08-01 00:00:00

abstract：:Food density, degree of hunger prior to foraging, and food processing difficulty were varied in order to determine their effects on the diet diversity of captive Peromyscus leucopus foraging for buried seeds. No relationship was found between diet diversity and food density. However, diet diversity exhibited a signifi...

journal_title：Oecologia

authors： Ebersole JP,Wilson JC

更新日期：1980-07-01 00:00:00

abstract：:The impacts of disturbance on biodiversity and distributions have been studied in many systems. Yet, comparatively less is known about how lichens-obligate symbiotic organisms-respond to disturbance. Successful establishment and development of lichens require a minimum of two compatible yet usually unrelated species t...

journal_title：Oecologia

authors： Tripp EA,Lendemer JC,McCain CM

更新日期：2019-06-01 00:00:00

abstract：:Larval digenetic trematodes commonly castrate their first intermediate hosts, and should therefore impose strong selection on the timing and mode of host reproduction. Here we examine spatial variation in infection by trematodes in the freshwater snail Potamopyrgus antipodarum. Snails were collected at 11 different si...

journal_title：Oecologia

authors： Jokela J,Lively CM

更新日期：1995-09-01 00:00:00

abstract：:Herbivores can have strong deleterious effects on plant growth, reproduction, and even survival. Because these effects might be strongly interrelated, the direct consumptive effects of herbivores and a variety of indirect effects are difficult to untangle. Reductions in growth, for example, may strongly impact the flo...

journal_title：Oecologia

authors： Brys R,Shefferson RP,Jacquemyn H

更新日期：2011-06-01 00:00:00

abstract：:Global changes interact with plant invasions by differentially impacting native and invasive species. For example, invasive plants often benefit from eutrophication to a greater degree than native plants. While this is well-documented, a broad, trait-based explanation for this phenomenon is lacking. Recent research sh...

journal_title：Oecologia

authors： Harvey JT,Leffler AJ

更新日期：2020-08-01 00:00:00

abstract：:Previous studies have shown that green sunfish, Lepomis cyanellus, have strong effects on the activity, habitat use, social interactions and mating dynamics of a stream-dwelling water strider, Aquarius remigis (family Gerridae, hence, gerrids). In nature, however, stream pools often contain not just sunfish and water ...

journal_title：Oecologia

authors： Sih A,Krupa JJ

更新日期：1996-01-01 00:00:00

abstract：:Larvae of the pyralid moth, Herpetogramma aeglealis, construct feeding shelters upon the Christmas fern (Polystichum acrostichoides). Field and laboratory study involving 532 shelters showed that as the larvae mature, they sequentially inhabit approximately 5 shelters of 3 distinct types, constructed at night on diffe...

journal_title：Oecologia

authors： Ruehlmann TE,Matthews RW,Matthews JR

更新日期：1988-03-01 00:00:00

abstract：:Soil properties of pioneer Pinus flexilis stands with similar topography and climate were investigated. Soils supporting this tree in association with Cercocarpus ledifolius were found to have higher percentages of total nitrogen than soils beneath similar stands lacking Cercocarpus.An excavated Cercocarpus ledifolius...

journal_title：Oecologia

authors： Lepper MG,Fleschner M

更新日期：1977-12-01 00:00:00

abstract：:Understanding the role of diversity in ecosystem processes and species interactions is a central goal of ecology. For plant-herbivore interactions, it has been hypothesized that when plant species diversity is reduced, loss of plant biomass to herbivores increases. Although long-standing, this hypothesis has received ...

journal_title：Oecologia

authors： Salazar D,Jaramillo A,Marquis RJ

更新日期：2016-08-01 00:00:00

abstract：:In an environment fluctuating in a predicatable manner with wide among-year variation in offspring mortality, fitness is largely influenced by the timing of reproductive investment. In vole-eating nocturnal Tengmalm's owls (Aegolius funereus), within-cycle variation in 1st-year survival of owlets is 3-fold as estimate...

journal_title：Oecologia

authors： Hakkarainen H,Korpimäki E

更新日期：1994-03-01 00:00:00

abstract：:Selection of sites for oviposition when the risk of predation by green frogs was variable studied in tandems of the damselfly Pyrrhosoma nymphula. In the absence of predators the number of tandems landing increased with the size of the oviposition site and with the number of pairs already present. Pairs approaching an...

journal_title：Oecologia

authors： Rehfeldt GE

更新日期：1990-12-01 00:00:00

abstract：:The compensatory growth potential of a grazed fungal biomass was mathematically expressed as a function of patchiness in its distribution and demonstrated in an experiment using the fungivorous collembolan Onychiurus armatus and the soil fungi Verticillium bulbillosum and Penicillium spinulosum. The model addresses th...

journal_title：Oecologia

authors： Bengtsson G,Hedlund K,Rundgren S

更新日期：1993-03-01 00:00:00

abstract：:The aim of our study was to identify interactions between the decomposition of aboveground litter and rhizosphere activity. The experimental approach combined the placement of labelled litter (delta13C=-37.9 per thousand ) with forest girdling in a 35-year-old Norway spruce stand, resulting in four different treatment...

journal_title：Oecologia

authors： Subke JA,Hahn V,Battipaglia G,Linder S,Buchmann N,Cotrufo MF

更新日期：2004-05-01 00:00:00

abstract：:Diapause allows insects to temporally avoid conditions that are unfavorable for development and reproduction. However, diapause may incur a cost in the form of reduced metabolic energy reserves, reduced potential fecundity, and missed reproductive opportunities. This study investigated a hitherto ignored consequence o...

journal_title：Oecologia

authors： Fordyce JA,Nice CC,Shapiro AM

更新日期：2006-08-01 00:00:00

abstract：:Pre-hatching developmental times for prosobranch gastropods are greatly influenced by temperature and taxonomic affinity. If the data used here (including all available data from the Muricacea) are a representative sample, then reasonably accurate estimates of developmental time can be obtained for most prosobranchs k...

journal_title：Oecologia

authors： Spight TM

更新日期：1975-03-01 00:00:00

abstract：:For some animals, the habitat which they first experience can influence the type of habitat which they select later in life and, thus, potentially their population distribution and dynamics. However, for many insect herbivores, whose natal habitat may consist of a single hostplant, the consequences of natal hostplant ...

journal_title：Oecologia

authors： Merwin AC,Inouye BD,Underwood N

更新日期：2020-06-01 00:00:00

abstract：:Classical resource- and the less studied ratio-dependent models of predator-prey relationships provide divergent predictions as to the sustained ecological effects of bottom-up forcing. While resource-dependent models, which consider only instantaneous prey density in modelling predator responses, predict community re...

journal_title：Oecologia

authors： Bishop MJ,Kelaher BP,Smith MP,York PH,Booth DJ

更新日期：2006-10-01 00:00:00

abstract：:From 1997 to 1999, we monitored the reproductive success of individual rufous-crowned sparrows (Aimophila ruficeps) in coastal sage scrub habitat of southern California, USA. Annual reproductive output of this ground-nesting species varied strongly with annual variation in rainfall, attributed to the El Niño-Southern ...

journal_title：Oecologia

authors： Morrison SA,Bolger DT

更新日期：2002-11-01 00:00:00

abstract：:Thermogenically elevated cone temperatures were measured in two Macrozamia cycad species that differ in their daily heating time. Mathematical models of the cones' thermo-physics were tested for their accuracy in predicting these cone temperatures and for comparison of the energetics of both species and the sexes with...

journal_title：Oecologia

authors： Roemer R,Terry I,Chockley C,Jacobsen J

更新日期：2005-06-01 00:00:00

abstract：:Atmospheric inputs of N and S in bulk deposition (open collectors) and throughfall (beneath canopy collectors) were measured in and adjacent to two Class 1 wilderness areas of the northeastern US. In general, atmospheric S inputs followed our expectations with throughfall S fluxes increasing with elevation in the Whit...

journal_title：Oecologia

authors： Templer PH,Weathers KC,Lindsey A,Lenoir K,Scott L

更新日期：2015-01-01 00:00:00

abstract：:Carbon and nitrogen stable isotopes were used to examine variation in ant use of plant resources in the Cecropia obtusifolia / Azteca spp. association in Costa Rica. Tissue of ants, host plants and symbiotic pseudococcids were collected along three elevation transects on the Pacific slope of Costa Rica's Cordillera Ce...

journal_title：Oecologia

authors： Trimble ST,Sagers CL

更新日期：2004-01-01 00:00:00

abstract：:Stable isotope analyses are often used to calculate relative contributions of multiple food sources in an animal's diet. One prerequisite for a precise calculation is the determination of the diet-tissue fractionation factor. Isotopic ratios in animals are not only affected by the composition of the diet, but also by ...

journal_title：Oecologia

authors： Gaye-Siessegger J,Focken U,Muetzel S,Abel H,Becker K

更新日期：2004-01-01 00:00:00

abstract：:The life history of freshwater cladocerans such as Daphnia spp. is strongly affected by their environment. Factors such as temperature, food quantity and even the presence or absence of predators influence growth, reproduction and morphology of individuals. Recently, it has also become clear that the quality of the fo...

journal_title：Oecologia

authors： Seidendorf B,Meier N,Petrusek A,Boersma M,Streit B,Schwenk K

更新日期：2010-02-01 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

abstract：:Soil nutrient availability directly enhances vegetative growth, flowering, and fruiting in alpine ecosystems. However, the impacts of nutrient addition on pollinator visitation, which could affect seed output indirectly, are unknown. In a nutrient addition experiment, we tested the hypothesis that seed output in the i...

journal_title：Oecologia

authors： Muñoz AA,Celedon-Neghme C,Cavieres LA,Arroyo MT

更新日期：2005-03-01 00:00:00