Terrestrial support of aquatic food webs depends on light inputs: a geographically-replicated test using tank bromeliads.

abstract：:Host nutrition is thought to affect the establishment, persistence, and severity of pathogenic infections. Nutrient-deficient foods possibly benefit pathogens by constraining host immune function or benefit hosts by limiting parasite growth and reproduction. However, the effects of poor elemental food quality on a hos...

journal_title：Ecology

authors： Frost PC,Ebert D,Smith VH

更新日期：2008-02-01 00:00:00

abstract：:One of the major mechanisms of plant diversification has been the evolution of polyploid populations that differ from their diploid progenitors in morphology, physiology, and environmental tolerances. Recent studies have indicated that polyploidy may also have major effects on ecological interactions with herbivores a...

journal_title：Ecology

authors： Thompson JN,Merg KF

更新日期：2008-08-01 00:00:00

abstract：:According to the ideal free distribution (IFD) theory, individuals that are able to perceive the quality of different patches in a landscape and disperse freely are expected to redistribute themselves proportionally to the carrying capacities of heterogeneous patches. Here, we argue that, when dispersal is uncondition...

journal_title：Ecology

authors： Hendrickx F,Palmer SC,Travis JM

更新日期：2013-11-01 00:00:00

abstract：:Forests play an influential role in the global carbon (C) cycle, storing roughly half of terrestrial C and annually exchanging with the atmosphere more than five times the carbon dioxide (CO2 ) emitted by anthropogenic activities. Yet, scaling up from field-based measurements of forest C stocks and fluxes to understan...

journal_title：Ecology

authors： Anderson-Teixeira KJ,Wang MMH,McGarvey JC,Herrmann V,Tepley AJ,Bond-Lamberty B,LeBauer DS

更新日期：2018-06-01 00:00:00

abstract：:Determining the relative contributions of intrinsic and extrinsic processes to the regulation of biological populations has been a recurrent ecological issue. Recent discussions concerning ecosystem "regime shifts" again raise the question of whether population fluctuations are mainly controlled by external forcing. R...

journal_title：Ecology

authors： Hsieh CH,Ohman MD

更新日期：2006-08-01 00:00:00

abstract：:Evidence accumulates about the role of arbuscular mycorrhizal (AM) fungi in shaping plant communities, but little is known about the factors determining the biomass and coexistence of several types of AM fungi in a plant community. Here, using a consumer-resource framework that treats the relationship between plants a...

journal_title：Ecology

authors： Bachelot B,Lee CT

更新日期：2018-02-01 00:00:00

abstract：:An under-examined component of global change is the alteration of disturbance regimes due to warming climates, continued species invasions, and accelerated land-use change. These drivers of global change are themselves novel ecosystem disturbances that may interact with historically occurring disturbances in complex w...

journal_title：Ecology

authors： Metz MR,Varner JM,Frangioso KM,Meentemeyer RK,Rizzo DM

更新日期：2013-10-01 00:00:00

abstract：:Understanding the dynamics of tree establishment is critical to assess forests' composition, management practices, and current responses to global change. We carried out a field seedling transplant experiment to assess not only the direct effects of resources influencing recruitment of four tree species, but also thei...

journal_title：Ecology

authors： Ibáñez I,McCarthy-Neumann S

更新日期：2014-02-01 00:00:00

abstract：:Whether different sources of mortality are additive, compensatory, or depensatory is a key question in population biology. A way to test for additivity is to calculate the correlation between cause-specific mortality rates obtained from marked animals. However, existing methods to estimate this correlation raise sever...

journal_title：Ecology

authors： Servanty S,Choquet R,Baubet E,Brandt S,Gaillard JM,Schaub M,Toïgo C,Lebreton JD,Buoro M,Gimenez O

更新日期：2010-07-01 00:00:00

abstract：:Nitrogen and phosphorus frequently limit terrestrial plant production, but have a mixed record in regulating the abundance of terrestrial invertebrates. We contrasted four ways that Na could interact with an NP fertilizer to shape the plants and invertebrates of an inland prairie. We applied NP and Na to m2 plots in a...

journal_title：Ecology

authors： Kaspari M,Roeder KA,Benson B,Weiser MD,Sanders NJ

更新日期：2017-02-01 00:00:00

abstract：:Nestedness and modularity have been recurrently observed in species interaction networks. Some studies argue that those topologies result from selection against unstable networks, and others propose that they likely emerge from processes driving the interactions between pairs of species. Here we present a model that s...

journal_title：Ecology

authors： Pinheiro RBP,Felix GMF,Dormann CF,Mello MAR

更新日期：2019-09-01 00:00:00

abstract：:A core goal of ecology is to understand the abiotic and biotic variables that regulate species distributions and community composition. A major obstacle is that the rules governing species distributions can change with spatial scale. Here, we illustrate this point using data from a spatially nested metacommunity of pa...

journal_title：Ecology

authors： Bolnick DI,Resetarits EJ,Ballare K,Stuart YE,Stutz WE

更新日期：2020-12-01 00:00:00

abstract：:Ecological theory predicts that generalist predators should damp or suppress long-term periodic fluctuations (cycles) in their prey populations and depress their average densities. However, the magnitude of these impacts is likely to vary depending on the availability of alternative prey species and the nature of ecol...

journal_title：Ecology

authors： Matthiopoulos J,Graham K,Smout S,Asseburg C,Redpath S,Thirgood S,Hudson P,Harwood J

更新日期：2007-10-01 00:00:00

abstract：:The study of how population genetic structure is shaped by attributes of the environment is a central scientific pursuit in ecology and conservation. But limited resources may prohibit landscape genetics studies for many threatened species, particularly given the pace of current environmental change. Understanding the...

journal_title：Ecology

authors： Mims MC,Phillipsen IC,Lytle DA,Kirk EE,Olden JD

更新日期：2015-05-01 00:00:00

abstract：:Ecological research is increasingly concentrated at particular locations or sites. This trend reflects a variety of advantages of intensive, site-based research, but also raises important questions about the nature of such spatially delimited research: how well does site based research represent broader areas, and doe...

journal_title：Ecology

authors： Fahey TJ,Templer PH,Anderson BT,Battles JJ,Campbell JL,Driscoll CT,Fusco AR,Green MB,Kassam KA,Rodenhouse NL,Rustad L,Schaberg PG,Vadeboncoeur MA

更新日期：2015-04-01 00:00:00

abstract：:Decades of ecological study have demonstrated the importance of top-down and bottom-up controls on food webs, yet few studies within this context have quantified the magnitude of energy and material fluxes at the whole-ecosystem scale. We examined top-down and bottom-up effects on food web fluxes using a field experim...

journal_title：Ecology

authors： Collins SM,Thomas SA,Heatherly T 2nd,MacNeill KL,Leduc AO,López-Sepulcre A,Lamphere BA,El-Sabaawi RW,Reznick DN,Pringle CM,Flecker AS

更新日期：2016-11-01 00:00:00

abstract：:Although water availability is primarily seen as a factor affecting food availability (a bottom-up process), we examined its effect on predator-prey interactions through an influence on prey behavior (a top-down process). We documented a link between water availability, predation risk, and reproductive success in a go...

journal_title：Ecology

authors： Lecomte N,Gauthier G,Giroux JF

更新日期：2009-02-01 00:00:00

abstract：:Sea turtle nesting presents a potential pathway to subsidize nutrient-poor dune ecosystems, which provide the nesting habitat for sea turtles. To assess whether this positive feedback between dune plants and turtle nests exists, we measured N concentration and delta15N values in dune soils, leaves from a common dune p...

journal_title：Ecology

authors： Hannan LB,Roth JD,Ehrhart LM,Weishampel JF

更新日期：2007-04-01 00:00:00

abstract：:We analyze an age-, size- and sex-structured model to investigate how the interplay between individual-level energy budget dynamics and the feedback of population grazing on resources shapes the individual life history and the dynamics of ungulate populations, living in a predator-free, seasonal resource environment. ...

journal_title：Ecology

authors： De Roos AM,Galic N,Heesterbeek H

更新日期：2009-04-01 00:00:00

abstract：:Effects of predation may cascade down the food web. By alleviating interspecific competition among prey, predators may promote biodiversity, but the precise mechanisms of how predators alter competition have remained elusive. Here we report on a predator-exclosure experiment carried out in a tropical intertidal ecosys...

journal_title：Ecology

authors： van Gils JA,van der Geest M,Jansen EJ,Govers LL,de Fouw J,Piersma T

更新日期：2012-05-01 00:00:00

abstract：:Although negative relationships between diversity (frequently measured as species richness) and invasibility at neighborhood or community scales have often been reported, realistic natural diversity gradients have rarely been studied at this scale. We recreated a naturally occurring gradient in species richness to tes...

journal_title：Ecology

authors： Alofs KM,Fowler NL

更新日期：2013-03-01 00:00:00

abstract：:In response to temporal changes in the quality and availability of food resources, consumers should adjust their foraging behavior in a manner that maximizes energy and nutrient intake and, when resources are limiting, minimizes dietary overlap with other consumers. Floodplains of the Amazon and its lowland tributarie...

journal_title：Ecology

authors： Correa SB,Winemiller KO

更新日期：2014-01-01 00:00:00

abstract：:Most hypotheses explaining the general gradient of higher diversity toward the equator are implicit or explicit about greater species packing in the tropics. However, global patterns of diversity within guilds, including trophic guilds (i.e., groups of organisms that use similar food resources), are poorly known. We e...

journal_title：Ecology

authors： Boyero L,Pearson RG,Dudgeon D,Graça MA,Gessner MO,Albariño RJ,Ferreira V,Yule CM,Boulton AJ,Arunachalam M,Callisto M,Chauvet E,Ramírez A,Chará J,Moretti MS,Gonçalves JF Jr,Helson JE,Chará-Serna AM,Encalada AC,Davies

更新日期：2011-09-01 00:00:00

abstract：:Ongoing climate change is shifting the geographic distributions of some species, potentially imposing rapid changes in local community structure and ecosystem functioning. Besides changes in population-level interspecific interactions, such range shifts may also cause changes in functional structure within the host as...

journal_title：Ecology

authors： Aguilera MA,Valdivia N,Broitman BR,Jenkins SR,Navarrete SA

更新日期：2020-11-01 00:00:00

abstract：:The expansion of shrubs and trees across high-latitude ecosystems is one of the most dramatic ecological manifestations of climate change. Most of the work quantifying these changes has been done in small areas and over relatively recent time scales. These land-cover transitions are highly spatially variable, and we h...

journal_title：Ecology

authors： Brodie JF,Roland CA,Stehn SE,Smirnova E

更新日期：2019-05-01 00:00:00

abstract：:After much debate, there is an emerging consensus that the composition of many ecological communities is determined both by species traits, as proposed by niche theory, as well as by chance events. A critical question for ecology is, therefore, which attributes of species predict the dominance of deterministic or stoc...

journal_title：Ecology

authors： Farjalla VF,Srivastava DS,Marino NA,Azevedo FD,Dib V,Lopes PM,Rosado AS,Bozelli RL,Esteves FA

更新日期：2012-07-01 00:00:00

abstract：:Two contrasting approaches to the analysis of population dynamics are currently popular: demographic approaches where the associations between demographic rates and statistics summarizing the population dynamics are identified; and time series approaches where the associations between population dynamics, population d...

journal_title：Ecology

authors： Coulson T,Ezard TH,Pelletier F,Tavecchia G,Stenseth NC,Childs DZ,Pilkington JG,Pemberton JM,Kruuk LE,Clutton-Brock TH,Crawley MJ

更新日期：2008-06-01 00:00:00

abstract：:Predators can impact ecosystems through consumptive or risk effects on prey. Physiologically, risk effects can be mediated by energetic mechanisms or stress responses. The predation-stress hypothesis predicts that risk induces stress in prey, which can affect survival and reproduction. However, empirical support for t...

journal_title：Ecology

authors： Hammerschlag N,Meÿer M,Seakamela SM,Kirkman S,Fallows C,Creel S

更新日期：2017-12-01 00:00:00

abstract：:We used tree ring data (AD 1601-2007) to examine the occurrence of and climatic influences on spruce beetle (Dendroctonus rufipennis) outbreaks in south-central and southwest Alaska and found evidence of regional-scale outbreaks dating from the mid-1700s, related to climate variability at multiple temporal scales. Ove...

journal_title：Ecology

authors： Sherriff RL,Berg EE,Miller AE

更新日期：2011-07-01 00:00:00

abstract：:Growth of soil microorganisms is often described as carbon limited, and adding labile carbon to soil often results in a transient and large increase in respiration. In contrast, soil microbial biomass changes little, suggesting that growth and respiration are decoupled in response to a carbon pulse. Alternatively, mea...

journal_title：Ecology

authors： Papp K,Hungate BA,Schwartz E

更新日期：2020-01-01 00:00:00