Shifts in southern Wisconsin forest canopy and understory richness, composition, and heterogeneity.

abstract：:Interactions between grazers and autotrophs are complex, including both top-down consumptive and bottom-up facilitative effects of grazers. Thus, in addition to consuming autotrophs, herbivores can also enhance autotroph biomass by recycling limiting nutrients, thereby increasing nutrient availability. Here, we evalua...

journal_title：Ecology

authors： Bracken ME,Dolecal RE,Long JD

更新日期：2014-06-01 00:00:00

abstract：:Responses to proximate cues that directly affect fitness or cues directly released by selective agents are well-documented forms of phenotypic plasticity. For example, to reduce predation risk, prey change phenotype in response to light level (e.g., moon phase) when light affects predation risk from visual predators, ...

journal_title：Ecology

authors： Miehls AL,McAdam AG,Bourdeau PE,Peacor SD

更新日期：2013-10-01 00:00:00

abstract：:Mechanisms of community assembly and ecosystem function are often analyzed using community-weighted mean trait values (CWMs). We present a novel conceptual framework to quantify the contribution of demographic processes (i.e., growth, recruitment, and mortality) to temporal changes in CWMs. We used this framework to a...

journal_title：Ecology

authors： Muscarella R,Lohbeck M,Martínez-Ramos M,Poorter L,Rodríguez-Velázquez JE,van Breugel M,Bongers F

更新日期：2017-11-01 00:00:00

abstract：:Animal habitat selection is a process that functions at multiple, hierarchically. structured spatial scales. Thus multi-scale analyses should be the basis for inferences about factors driving the habitat selection process. Vertebrate herbivores forage selectively on the basis of phytochemistry, but few studies have in...

journal_title：Ecology

authors： Frye GG,Connelly JW,Musil DD,Forbey JS

更新日期：2013-02-01 00:00:00

abstract：:The need to model and test hypotheses about complex ecological systems has led to a steady increase in use of path analytical techniques, which allow the modeling of multiple multivariate dependencies reflecting hypothesized causation and mechanisms. The aim is to achieve the estimation of direct, indirect, and total ...

journal_title：Ecology

authors： Clough Y

更新日期：2012-08-01 00:00:00

abstract：:Consumers can alter decomposition rates through both feces and selective feeding in many ecosystems, but these combined effects have seldom been examined in tropical ecosystems. Members of the detrital food web (litter-feeders or microbivores) should presumably have greater effects on decomposition than herbivores, me...

journal_title：Ecology

authors： Prather CM,Belovsky GE,Cantrell SA,González G

更新日期：2018-04-01 00:00:00

abstract：:Epidemiological theory suggests that pathogens will not cause host extinctions because agents of disease should fade out when the host population is driven below a threshold density. Nevertheless, infectious diseases have threatened species with extinction on local scales by maintaining high incidence and the ability ...

journal_title：Ecology

authors： Ben-Horin T,Lenihan HS,Lafferty KD

更新日期：2013-01-01 00:00:00

abstract：:Animal migrations are a fascinating and global phenomenon, yet they are often difficult to study and sometimes poorly understood. Here, we build on classic ecological theory by hypothesizing that some enigmatic spawning migrations across coastal marine habitats can be inferred from the population genetic signature of ...

journal_title：Ecology

authors： Krueck NC,Treml EA,Innes DJ,Ovenden JR

更新日期：2020-03-01 00:00:00

abstract：:Animals selecting habitats often have to consider many factors, e.g., food and cover for safety. However, each habitat type often lacks an adequate mixture of these factors. Analyses of habitat selection using resource selection functions (RSFs) for animal radiotelemetry data typically ignore trade-offs, and the fact ...

journal_title：Ecology

authors： Godvik IM,Loe LE,Vik JO,Veiberg V,Langvatn R,Mysterud A

更新日期：2009-03-01 00:00:00

abstract：:Although many studies have investigated plant growth in the context of episodic herbivory and pressed resource availability, relatively few have examined how plant growth is affected by pulsed resources and chronic herbivory. Periodical cicada (Magicicada spp.) adults represent a pulsed detrital subsidy that fertilize...

journal_title：Ecology

authors： Yang LH,Karban R

更新日期：2019-06-01 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：:The spatial habitat heterogeneity hypothesis posits that habitat complexity increases the abundance and diversity of species. In tropical forests, lianas add substantial habitat heterogeneity and complexity throughout the vertical forest profile, which may maintain animal abundance and diversity. The effects of lianas...

journal_title：Ecology

authors： Schnitzer SA,Michel NL,Powers JS,Robinson WD

更新日期：2020-12-01 00:00:00

abstract：:Paleorecords provide information on past environmental variability, and help define ecological reference conditions by means of changes in their characteristics (accumulation rate, geochemical composition, density, etc.). A measure of temporal dissimilarity, which has traditionally been used in dendrochronology and is...

journal_title：Ecology

authors： Biondi F,Qeadan F

更新日期：2008-04-01 00:00:00

abstract：:Among the few universal themes in ecology is that resources, energy, and organisms themselves, are patchily distributed. This patchy distribution imposes a need for some level of dispersal or connectivity among spatially separate patches in order to allow organisms to acquire sufficient resources for survival. To date...

journal_title：Ecology

authors： Brooks CP

更新日期：2006-04-01 00:00:00

abstract：:Carry-over effects have major implications for individual fitness and population and evolutionary dynamics. The strength of these effects is dependent on an individual's intrinsic performance and the environmental conditions it experiences. However, understanding the relative importance of environmental and intrinsic ...

journal_title：Ecology

authors： Daunt F,Reed TE,Newell M,Burthe S,Phillips RA,Lewis S,Wanless S

更新日期：2014-08-01 00:00:00

abstract：:Urbanization has profound influences on ecological communities, but our understanding of causal mechanisms is limited by a lack of attention to its component stressors. Published research suggests that at landscape scales, habitat loss and fragmentation are the major drivers of community change, whereas at local scale...

journal_title：Ecology

authors： Schlesinger MD,Manley PN,Holyoak M

更新日期：2008-08-01 00:00:00

abstract：:Predictive classifications of life histories are essential for evolutionary ecology. While attempts to apply a single approach to all organisms may be overambitious, recent advances suggest that more narrow ordination schemes can be useful. However, these schemes mostly lack easily observable proxies of the position o...

journal_title：Ecology

authors： Davis RB,Javoiš J,Kaasik A,Õunap E,Tammaru T

更新日期：2016-08-01 00:00:00

abstract：:Theory of invasion ecology indicates that the number of invading individuals (propagule size) and the timing of invasion are important for invasion success. Propagule size affects establishment success due to an Allee effect and the effect of demographic stochasticity, whereas the timing of invasion does so via niche ...

journal_title：Ecology

authors： Yamamichi M,Yoshida T,Sasaki A

更新日期：2014-08-01 00:00:00

abstract：:Competitive outcomes among plants can vary in different abiotic and biotic conditions. Here we tested the effects of two phylotypes of Alternaria endophytes on the growth, competitive effects, and competitive responses of the exotic invasive forb Centaurea stoebe. Centaurea stoebe was a better competitor against North...

journal_title：Ecology

authors： Aschehoug ET,Metlen KL,Callaway RM,Newcombe G

更新日期：2012-01-01 00:00:00

abstract：:The temporal stability of aggregate community and ecosystem properties is influenced by the variability of component populations, the interactions among populations, and the influence of environmental fluctuations on populations. Environmental fluctuations that enhance population variability are generally expected to ...

journal_title：Ecology

authors： Downing AL,Brown BL,Perrin EM,Keitt TH,Leibold MA

更新日期：2008-11-01 00:00:00

abstract：:Introduced species are frequently implicated in declines of native species. In many cases, however, evidence linking introduced species to native declines is weak. Failure to make strong inferences regarding the role of introduced species can hamper attempts to predict population viability and delay effective manageme...

journal_title：Ecology

authors： Yackulic CB,Korman J,Yard MD,Dzul M

更新日期：2018-04-01 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：:Given recent focus on large rivers as conduits for excess nutrients to coastal zones, their role in processing and retaining nutrients has been overlooked and understudied. Empirical measurements of nutrient uptake in large rivers are lacking, despite a substantial body of knowledge on nutrient transport and removal i...

journal_title：Ecology

authors： Tank JL,Rosi-Marshall EJ,Baker MA,Hall RO Jr

更新日期：2008-10-01 00:00:00

abstract：:Photoautotrophs are generally considered to be the base of food webs, and habitats that lack light, such as caves, frequently rely on surface-derived carbon. Here we show, based on analysis of gut contents and stable isotope ratios of tissues (13C:12C and 15N:14N), that sulfur-oxidizing bacteria are directly consumed ...

journal_title：Ecology

authors： Roach KA,Tobler M,Winemiller KO

更新日期：2011-11-01 00:00:00

abstract：:Because sea otters (Enhydra lutris) exert a wide array of direct and indirect effects on coastal marine ecosystems throughout their geographic range, we investigated the potential influence of sea otters on the ecology of Bald Eagles (Haliaeetus leucocephalus) in the Aleutian Islands, Alaska, USA. We studied the diets...

journal_title：Ecology

authors： Anthony RG,Estes JA,Ricca MA,Miles AK,Forsman ED

更新日期：2008-10-01 00:00:00

abstract：:The adaptive nature of sociality has long been a central question in ecology and evolution. However, the relative importance of social behavior for fitness, compared to morphology and environment, remains largely unknown. We assessed the importance of sociality for fitness (lamb production and survival) in a populatio...

journal_title：Ecology

authors： Vander Wal E,Festa-Bianchet M,Réale D,Coltman DW,Pelletier F

更新日期：2015-03-01 00:00:00

abstract：:Bottom-up and top-down effects act together to exert strong control over plant growth and reproduction, but how physical stress modifies those interactive forces remains unclear. Even though empirical evidence is scarce, theory predicts that the importance of both top-down- and bottom-up forces may decrease as physica...

journal_title：Ecology

authors： Daleo P,Alberti J,Bruschetti CM,Pascual J,Iribarne O,Silliman BR

更新日期：2015-08-01 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：:The literature suggests that small genomes promote invasion in plants, but little is known about the interaction of genome size with other traits or about the role of genome size during different phases of the invasion process. By intercontinental comparison of native and invasive populations of the common reed Phragm...

journal_title：Ecology

authors： Pyšek P,Skálová H,Čuda J,Guo WY,Suda J,Doležal J,Kauzál O,Lambertini C,Lučanová M,Mandáková T,Moravcová L,Pyšková K,Brix H,Meyerson LA

更新日期：2018-01-01 00:00:00

abstract：:Empirical tests of the resource dispersion hypothesis (RDH), a theory to explain group living based on resource heterogeneity, have been complicated by the fact that resource patch dispersion and richness have proved difficult to define and measure in natural systems. Here, we studied the ecology of African lions Pant...

journal_title：Ecology

authors： Valeix M,Loveridge AJ,MacDonald DW

更新日期：2012-11-01 00:00:00