The effects of climatic pattern on lichen productivity: Cetraria cucullata (Bell.) Ach. in the arctic tundra of northern Alaska.

abstract：:Understanding climatic controls on tropical forest productivity is key to developing more reliable models for predicting how tropical biomes may respond to climate change. Currently there is no consensus on which factors control seasonal changes in tropical forest tree growth. This study reports the first comprehensiv...

journal_title：Oecologia

authors： Rowland L,Malhi Y,Silva-Espejo JE,Farfán-Amézquita F,Halladay K,Doughty CE,Meir P,Phillips OL

更新日期：2014-01-01 00:00:00

abstract：:Studies focused on how prey trade-off predation and starvation risk are prevalent in behavioral ecology. However, our current understanding of these trade-offs is limited in one key respect: we know little about the behavior of predators. In this study, we provide some of the first detailed information on temporal pat...

journal_title：Oecologia

authors： Roth TC 2nd,Lima SL

更新日期：2007-05-01 00:00:00

abstract：:Determining how environmental conditions interact with individual intrinsic properties is important for unravelling the underlying mechanisms that drive variation in reproductive decisions among migratory species. We investigated the influence of sea ice conditions and body condition at arrival on the breeding propens...

journal_title：Oecologia

authors： Jean-Gagnon F,Legagneux P,Gilchrist G,Bélanger S,Love OP,Bêty J

更新日期：2018-01-01 00:00:00

abstract：:Spartina alterniflora has been reported to lose significant amounts of oxygen to its rhizosphere with potentially important effects on salt-marsh biogeochemical cycling and plant productivity. The potential significance of this oxidative pathway was evaluated using laboratory split-chamber experiments to quantify oxyg...

journal_title：Oecologia

authors： Howes BL,Teal JM

更新日期：1994-05-01 00:00:00

abstract：:In plagiotropic plants, axillary buds on the stolon can be exposed to low red:far-red (R:FR) ratios, while the leaves may be positioned in the uppermost layer of the sward where they are exposed to a high R:FR ratio. We tested whether the light environment of unfolded leaves influences outgrowth of the axillary buds a...

journal_title：Oecologia

authors： Lötscher M,Nösberger J

更新日期：1997-08-01 00:00:00

abstract：:Plasticity of plant traits is commonly quantified by comparing different phenotypes at the same age. In this paper, we present a method in which the effect of resource conditions on plant weight is used as a basis for quantifying the plasticity of individual plant traits. Abutilon theophrasti individuals were grown in...

journal_title：Oecologia

authors： Rice SA,Bazzaz FA

更新日期：1989-03-01 00:00:00

abstract：:Much of the research into herbivore ecology and evolution has focused on patterns and mechanisms of niche partitioning in the diets of specialized grazers and browsers, but the significance of the balance of grazing and browsing within intermediate feeders present unique questions that have received less attention. We...

journal_title：Oecologia

authors： Christianson D,Creel S

更新日期：2009-01-01 00:00:00

abstract：:The stress-gradient hypothesis (SGH) predicts that the community-wide prevalence of positive interactions, relative to negative interactions, is greater under more severe environmental conditions. Because the frequency of positive and negative interactions within a community is the aggregate of multiple pair-wise inte...

journal_title：Oecologia

authors： le Roux PC,McGeoch MA

更新日期：2010-03-01 00:00:00

abstract：:Genets of Trifolium repens (white clover) were collected from three patches of old permanent pasture dominated by Agrostis capillaris, Holcus lanatus or Lolium perenne. Plants derived from the genets were grown with plants of one grass species present on one side of each T. repens, and a different grass species on the...

journal_title：Oecologia

authors： Turkington R,Hamilton RS,Gliddon C

更新日期：1991-04-01 00:00:00

abstract：:Invasive species-species that have successfully overcome the barriers of transport, introduction, establishment, and spread-are a risk to biodiversity and ecosystem function. Introduction effort is one of the main factors underlying invasion success, but life history traits are also important as they influence populat...

journal_title：Oecologia

authors： van der Marel A,Waterman JM,López-Darias M

更新日期：2021-01-22 00:00:00

abstract：:It is widely recognized that pollinators vary in their effectiveness in pollination mutualisms, due both to differences in flower-pollinator morphological fit as well as pollinator behaviour. However, pollination webs typically treat all interactions as equal, and we contend that this method may provide misleading res...

journal_title：Oecologia

authors： Sánchez-Lafuente AM,Rodríguez-Gironés MA,Parra R

更新日期：2012-01-01 00:00:00

abstract：:Despite many studies highlighting the widespread occurrence and effects of resource movement between ecosystems, comparatively little is known about how anthropogenic alterations to ecosystems affect the strength, direction and importance of such fluxes. Hydrological regime and riparian land use cause well-documented ...

journal_title：Oecologia

authors： Greenwood MJ,Booker DJ

更新日期：2016-02-01 00:00:00

abstract：:Population dynamics of attached algae in a eutrophic farmland stream (Wellow Brook, England) were correlated through multiple regression analyses with changes in 7 physico-chemical parameters (temperature, light, water velocity, pH, NO3-N, P2O5-P, SiO2-Si). Samples were taken every 2 weeks for 25 consecutive months be...

journal_title：Oecologia

authors： Moore JW

更新日期：1977-09-01 00:00:00

abstract：:The objective of this study was to separate the effects of plant biomass and growth rate on vegetative reproduction in two species of cat-tail, Typha latifolia and T. angustifolia. Replicate clones of both species were grown under conditions of 100%, 42%, 24%, and 9% full sunlight with harvests at 41, 70, and 91 days ...

journal_title：Oecologia

authors： Grace JB,Wetzel RG

更新日期：1981-08-01 00:00:00

abstract：:The habitats occupied by species of wood warblers (Emberizidae) were compared at two study areas, Itasca State Park, Minnesota and Mount Blue State Park, Maine. Univariate comparisons of each variable of habitat structure show geographic differences for each species of warbler. Habitats available were also different b...

journal_title：Oecologia

authors： Collins SL

更新日期：1983-09-01 00:00:00

abstract：:The development of the ant communities and their foraging dynamics were studied in two annual agroecosystems of the Mexican tropical lowlands: a "forest milpa" of corn, beans, and squash made by cutting and buring 40-year-old forest, and a "field milpa" of corn, beans, and squash made by plowing 1-year-old second grow...

journal_title：Oecologia

authors： Risch SJ,Carroll CR

更新日期：1982-10-01 00:00:00

abstract：:Hypotheses about the influence of intraspecific density and available cover on home range size (=mean activity radius) of a plethodontid salamander (Desmognathus monticola) were tested by field experimentation from June 1980 to October 1981. A second order mountain stream in southwestern North Carolina was marked into...

journal_title：Oecologia

authors： Kleeberger SR

更新日期：1985-06-01 00:00:00

abstract：:The interaction between the anther smutMicrobotryum violaceum and its hostSilene dioica was studied during 1985-1990 in 47 populations of different ages, sizes and densities, in an archipelago area in northern Sweden. The sizes of these populations had also been surveyed in the early 1970s. Our results indicate that e...

journal_title：Oecologia

authors： Carlsson U,Elmqvist T

更新日期：1992-07-01 00:00:00

abstract：:Our experiments addressed systemic metabolic effects in above-ground plant tissue as part of the plant's response to the arbuscular mycorrhizal (AM) interaction. Due to the physiology of this interaction, we expected effects in the areas of plant mineral nutrition, carbon allocation and stress-related metabolism, but ...

journal_title：Oecologia

authors： Fester T,Fetzer I,Buchert S,Lucas R,Rillig MC,Härtig C

更新日期：2011-12-01 00:00:00

abstract：:The responses to drought of the solar tracking winter annualLupinus arizonicus (Wats.) were examined under field and laboratory growth regimes. Under drought conditions tracking movements were maintained until the plant reached the wilting point. The leaves and leaflets were observed to cup in response to decreases in...

journal_title：Oecologia

authors： Forseth I,Ehleringer JR

更新日期：1980-01-01 00:00:00

abstract：:Species of the 'bana' vegetation in the Amazonas region of equatorial South America have scleromorphic leaves. This leaf type, which characterizes the vegetation of Mediterranean climates, among others, has apparently evolved in this community in response to the oligotrophic soils and widely fluctuating water table.An...

journal_title：Oecologia

authors： Sobrado MA,Medina E

更新日期：1980-01-01 00:00:00

abstract：:Plants experience unique challenges due to simultaneous life in two spheres, above- and belowground. Interactions with other organisms on one side of the soil surface may have impacts that extend across this boundary. Although our understanding of plant-herbivore interactions is derived largely from studies of leaf he...

journal_title：Oecologia

authors： Barber NA,Adler LS,Bernardo HL

更新日期：2011-02-01 00:00:00

abstract：:The increasing popularity of stable isotope analysis (SIA) as an ecological research tool and the ease of automated analysis have created a knowledge gap between ecologists using SIA and the operators of isotope ratio mass spectrometry (IRMS) equipment. This has led to deterioration in the understanding of IRMS method...

journal_title：Oecologia

authors： Jardine TD,Cunjak RA

更新日期：2005-08-01 00:00:00

abstract：:The need to allocate a limited amount of energy between different life-history traits is a fundamental assumption in life-history theory. However, it has often turned out to be extremely difficult to measure the competing processes that contribute to costs or benefits for individual organisms. The present investigatio...

journal_title：Oecologia

authors： Stadler B

更新日期：1995-05-01 00:00:00

abstract：:Vallisneria americana was grown for six weeks in a greenhouse on relatively fertile sediment to test for factors other than nutrient limitation which may slow growth of this submersed macrophyte at pH 5. On the basis of dry mass accumulated, (1) low pH significantly depressed Vallisneria growth at constant free CO2 le...

journal_title：Oecologia

authors： Titus JE,Feldman RS,Grisé D

更新日期：1990-10-01 00:00:00

abstract：:Increasing concern about loss of biodiversity and its effects on ecosystem functioning has triggered a series of manipulative experiments worldwide, which have demonstrated a general trend for ecosystem functioning to increase with diversity. General mechanisms proposed to explain diversity effects include complementa...

journal_title：Oecologia

authors： Tobner CM,Paquette A,Reich PB,Gravel D,Messier C

更新日期：2014-03-01 00:00:00

abstract：:We describe differences in senescence among populations of grasshoppers that occur along an altitudinal gradient in the Sierra Nevada, California. Experimental males from five populations of the Melanoplus sanguinipes/devastator sibling species complex were reared in each of two thermal culture conditions from eggs of...

journal_title：Oecologia

authors： Tatar M,Gray DW,Carey JR

更新日期：1997-07-01 00:00:00

abstract：:We studied the relationships between body size and (a) abundance and (b) host specificity in fleas parasitic on small mammals (rodents and shrews) in the Palearctic taking into account the confounding effect of phylogeny. We tested these relationships both across 127 flea species and within separate phylogenetic clade...

journal_title：Oecologia

authors： Surkova EN,Warburton EM,van der Mescht L,Khokhlova IS,Krasnov BR

更新日期：2018-10-01 00:00:00

abstract：:This study reports a rare example where a native herbivorous insect frequently overexploits local populations of its perennial host. Local dynamics of a flightless weevil (Hadramphus spinipennis, Curculionidae) and its host plant (Aciphylla dieffenbachii, Apiaceae) were assessed for one discrete patch. In this main st...

journal_title：Oecologia

authors： Schöps K

更新日期：2002-07-01 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