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  • A multiscale framework for disentangling the roles of evenness, density, and aggregation on diversity gradients
    Ecology (IF 4.7) Pub Date : 2020-10-24
    Daniel J. McGlinn; Thore Engel; Shane A. Blowes; Nicholas J. Gotelli; Tiffany M. Knight; Brian J. McGill; Nathan Sanders; Jonathan M. Chase

    Disentangling the drivers of diversity gradients can be challenging. The Measurement of Biodiversity (MoB) framework decomposes scale‐dependent changes in species diversity into three components of community structure: the species abundance distribution (SAD), the total community abundance, and the within‐species spatial aggregation. Here we extend MoB from categorical treatment comparisons to quantify

    更新日期:2020-10-26
  • Reduced magnitude and shifted seasonality of CO2 sink by experimental warming in a coastal wetland
    Ecology (IF 4.7) Pub Date : 2020-10-24
    Baoyu Sun; Liming Yan; Ming Jiang; Xinge Li; Guangxuan Han; Jianyang Xia

    Coastal wetlands have the highest carbon sequestration rate per unit area among all unmanaged natural ecosystems. However, how magnitude and seasonality of CO2 sink in coastal wetlands will respond to future climate warming remain unclear. Here, based on measurements of ecosystem CO2 fluxes in a field experiment in the Yellow River Delta, we found that experimental warming (i.e., a 2.4 °C increase

    更新日期:2020-10-26
  • Deer slow down litter decomposition by reducing litter quality in a temperate forest
    Ecology (IF 4.7) Pub Date : 2020-10-24
    Simon Chollet; Morgane Maillard; Juliane Schörghuber; Sue J. Grayston; Jean‐Louis Martin

    Litter decomposition is a key process that allows the recycling of nutrients within ecosystems. In temperate forests the role of large herbivores in litter decomposition remains a subject of debate. To address this question, we used two litterbag experiments in a quasi‐experimental situation resulting from the introduction of Sitka black‐tailed deer Odocoileus hemionus sitkensis on forested islands

    更新日期:2020-10-26
  • Parasite intensity and the evolution of migratory behavior
    Ecology (IF 4.7) Pub Date : 2020-10-24
    Laurinne J. Balstad; Sandra A. Binning; Meggan E. Craft; Marlene Zuk; Allison K. Shaw

    Migration can allow individuals to escape parasite infection, which can lead to a lower infection probability (prevalence) in a population and/or fewer parasites per individual (intensity). Since individuals with more parasites often have lower survival and/or fecundity, infection intensity shapes the life‐history tradeoffs determining when migration is favored as a strategy to escape infection. Yet

    更新日期:2020-10-26
  • Vicuña dung gardens at the edge of the cryosphere
    Ecology (IF 4.7) Pub Date : 2020-10-24
    Kelsey E. Reider; Steven K. Schmidt

    The decline and subsequent recovery of the vicuña (Vicugna vicugna, Quechua: wik’uña), one of the few large, native herbivores in the Andes (Figure 1), is one of the world’s greatest conservation success stories. Over‐exploited nearly to extinction by the 1960’s, the current population of these wild camelids is estimated at close to 500,000 animals, with nearly half of the global population in Peru

    更新日期:2020-10-26
  • Microbiome and environment explain the absence of correlations between consumers and their diet in Bornean microsnails
    Ecology (IF 4.7) Pub Date : 2020-10-24
    Kasper P. Hendriks; Karen Bisschop; Hylke H. Kortenbosch; James C. Kavanagh; Anaïs E.A. Larue; Chee‐Chean Phung; Dries Bonte; Elza J. Duijm; Joana Falcão Salles; Alex L. Pigot; Francisco J. Richter Mendoza; Menno Schilthuizen; Marti J. Anderson; Arjen G.C.L. Speksnijder; Rampal S. Etienne

    Classical ecological theory posits that species partition resources such that each species occupies a unique resource niche. In general, the availability of more resources allows more species to co‐occur. Thus, a strong relationship between communities of consumers and their resources is expected. However, correlations may be influenced by other layers in the food web, or by the environment. Here we

    更新日期:2020-10-26
  • Frenemy at the gate: invasion by Pheidole megacephala facilitates a competitively subordinate plant ant in Kenya
    Ecology (IF 4.7) Pub Date : 2020-10-24
    Todd M. Palmer; Corinna Riginos; Patrick D. Milligan; Brandon R. Hays; Alejandro G. Pietrek; Nelly J. Maiyo; Samuel Mutisya; Benard Gituku; Simon Musila; Scott Carpenter; Jacob R. Goheen

    Biological invasions can lead to the reassembly of communities, and understanding and predicting the impacts of exotic species on community structure and functioning is a key challenge in ecology. We investigated the impact of a predatory species of invasive ant, Pheidole megacephala, on the structure and function of a foundational mutualism between Acacia drepanolobium and its associated acacia‐ant

    更新日期:2020-10-26
  • Species pool size alters species‐area relationships during experimental community assembly
    Ecology (IF 4.7) Pub Date : 2020-10-22
    Christopher P. Catano; Emily Grman; Eric Behrens; Lars A. Brudvig

    The species pool concept has advanced our understanding for how biodiversity is coupled at local and regional scales. However, it remains unclear how species pool size — the number of species available to disperse to a site — influences community assembly across spatial scales. We provide one of the first studies that assesses diversity across scales after experimentally assembling grassland communities

    更新日期:2020-10-23
  • Strong effects of a mutualism on freshwater community structure
    Ecology (IF 4.7) Pub Date : 2020-10-18
    Robert P. Creed; James Skelton; Kaitlin J. Farrell; Bryan L. Brown

    Numerous mutualisms have been described from terrestrial and marine communities and many of these mutualisms have significant effects on community structure and function. In contrast, there are far fewer examples of mutualisms from freshwater habitats and there is no evidence that any mutualism has community‐wide or ecosystem‐level consequences. Northern hemisphere crayfish are host to a variety of

    更新日期:2020-10-19
  • Freshwater zooplankton metapopulations and metacommunities respond differently to environmental and spatial variation
    Ecology (IF 4.7) Pub Date : 2020-10-17
    Gillian K. Martin; Beatrix E. Beisner; Frédéric J.J. Chain; Melania E. Cristescu; Paul A. del Giorgio; Alison M. Derry

    Theory predicts that population genetic structure and metacommunity structure are linked by the common processes of drift and migration, but how population genetic structure and metacommunity structure are related in nature is still unknown. Deeper understanding of the processes influencing both genetic and community diversity is vital for better predicting how environmental change will impact biodiversity

    更新日期:2020-10-17
  • High summer temperatures amplify functional differences between coral‐ and algae‐dominated reef communities
    Ecology (IF 4.7) Pub Date : 2020-10-17
    Florian Roth; Nils Rädecker; Susana Carvalho; Carlos M. Duarte; Vincent Saderne; Andrea Anton; Luis Silva; Maria Ll. Calleja; Xosé Anxelu G. Morán; Christian R. Voolstra; Benjamin Kürten; Burton H. Jones; Christian Wild

    Shifts from coral to algal dominance are expected to increase in tropical coral reefs as a result of anthropogenic disturbances. The consequences for key ecosystem functions such as primary productivity, calcification, and nutrient recycling are poorly understood, particularly under changing environmental conditions. We used a novel in situ incubation approach to compare functions of coral‐ and algae‐dominated

    更新日期:2020-10-17
  • Increasing effects of chronic nutrient enrichment on plant diversity loss and ecosystem productivity over time
    Ecology (IF 4.7) Pub Date : 2020-10-15
    Eric W. Seabloom; Peter B. Adler; Juan Alberti; Lori Biederman; Yvonne M. Buckley; Marc W. Cadotte; Scott L. Collins; Laura Dee; Philip A. Fay; Jennifer Firn; Nicole Hagenah; W. Stanley Harpole; Yann Hautier; Andy Hector; Sarah E. Hobbie; Forest Isbell; Johannes M.H. Knops; Kimberly J. Komatsu; Ramesh Laungani; Andrew MacDougall; Rebecca L. McCulley; Joslin L. Moore; John W. Morgan; Timothy Ohlert;

    Human activities are enriching many of Earth’s ecosystems with biologically limiting mineral nutrients such as nitrogen (N) and phosphorus (P). In grasslands, this enrichment generally reduces plant diversity and increases productivity. The widely demonstrated positive effect of diversity on productivity suggests a potential negative feedback, whereby nutrient‐induced declines in diversity reduce the

    更新日期:2020-10-16
  • Intra-specific variability in fluctuating environments: mechanisms of impact on species diversity.
    Ecology (IF 4.7) Pub Date : 2020-08-28
    Bnaya Steinmetz,Michael Kalyuzhny,Nadav M Shnerb

    Recent studies have found considerable trait variations within species. The effect of such intraspecific trait variability (ITV) on the stability, coexistence, and diversity of ecological communities received considerable attention and in many models it was shown to impede coexistence and decrease species diversity. Here we present a numerical study of the effect of genetically inherited ITV on species

    更新日期:2020-10-16
  • Previous exposure mediates the response of eelgrass to future warming via clonal transgenerational plasticity.
    Ecology (IF 4.7) Pub Date : 2020-08-26
    Katherine DuBois,Susan L Williams,John J Stachowicz

    Mortality and shifts in species distributions are among the most obvious consequences of extreme climatic events. However, the sublethal effects of an extreme event can have persistent impacts throughout an individual’s lifetime and into future generations via within‐generation and transgenerational phenotypic plasticity. These changes can either confer resilience or increase susceptibility to subsequent

    更新日期:2020-10-16
  • Using functional traits to model annual plant community dynamics.
    Ecology (IF 4.7) Pub Date : 2020-08-26
    Helen Metcalfe,Alice E Milne,Florent Deledalle,Jonathan Storkey

    Predicting the response of biological communities to changes in the environment or management is a fundamental pursuit of community ecology. Meeting this challenge requires the integration of multiple processes: habitat filtering, niche differentiation, biotic interactions, competitive exclusion, and stochastic demographic events. Most approaches to this long‐standing problem focus either on the role

    更新日期:2020-10-15
  • Warming and shifting phenology accelerate an invasive plant life cycle
    Ecology (IF 4.7) Pub Date : 2020-10-13
    Joseph A. Keller; Katriona Shea

    Numerous studies have documented changes in the seasonal timing of organisms’ growth and reproduction in response to climate warming. These changes correlate with documented changes in species’ abundance, but mechanisms linking these trends remain elusive. We investigated the joint demographic effects of advanced reproductive phenology and warming on a globally invasive plant (Carduus nutans) in a

    更新日期:2020-10-13
  • Interactive impacts of climate change and land‐use change on the demography of montane birds
    Ecology (IF 4.7) Pub Date : 2020-10-13
    Umesh Srinivasan; David S. Wilcove

    Climate change and habitat degradation are amongst the two greatest threats to biodiversity. Together, they can interact to harm species. However, how climate change and land‐use change jointly affect the demographic vital rates that underpin population viability remains unknown. Here, using long‐term data on birds from the increasingly degraded and rapidly warming Himalayas, we show that survival

    更新日期:2020-10-13
  • Biodiversity hotspots at a small scale: the importance of eagles’ nests to many other animals
    Ecology (IF 4.7) Pub Date : 2020-10-13
    Grzegorz Maciorowski; Łukasz Jankowiak; Tim H. Sparks; Michał Polakowski; Piotr Tryjanowski

    Top‐predators, including birds of prey, play an important role in ecosystems and are good bioindicators (Sergio et al. 2005). Links between the presence of predators and the overall biodiversity of a particular habitat mainly focus on trophic relationships (Roth and Weber 2008, Sergio et al. 2008b, Burgas et al. 2014). However, top‐predators not only have food requirements, but also need to build large

    更新日期:2020-10-13
  • The dynamics and stoichiometry of dissolved organic carbon release by kelp
    Ecology (IF 4.7) Pub Date : 2020-10-13
    Brooke L. Weigel; Catherine A. Pfister

    Canopy‐forming kelps are foundational species in coastal ecosystems, fixing tremendous amounts of carbon, yet we know little about the ecological and physiological determinants of dissolved organic carbon (DOC) release by kelps. We examined DOC release by the bull kelp, Nereocystis luetkeana, in relation to carbon fixation, nutrient uptake, tissue nitrogen content, and light availability. DOC release

    更新日期:2020-10-13
  • Advanced canopy regeneration: an unrecognized mechanism of forest dynamics
    Ecology (IF 4.7) Pub Date : 2020-10-13
    Iván A. Díaz; Javier Godoy‐Güinao; Daniela Mellado‐Mansilla; Ricardo Moreno‐González; Emilio Cuq; Gabriel Ortega‐Solís; Juan J. Armesto

    Gaps in the forest canopy, created by treefalls, are fundamental to the process of forest dynamics (Yamamoto 2000). Tree‐fall gaps are critical for the regeneration of shade‐intolerant tree species while at the same time, providing opportunities for the growth and establishment of shade‐tolerant tree species (Yamamoto 2000). Gap dynamics is central to understanding change in old‐growth forests, and

    更新日期:2020-10-13
  • Host plant availability drives the spatio-temporal dynamics of interacting metapopulations across a fragmented landscape.
    Ecology (IF 4.7) Pub Date : 2020-09-06
    Øystein H Opedal,Otso Ovaskainen,Marjo Saastamoinen,Anna-Liisa Laine,Saskya van Nouhuys

    The dynamics of ecological communities depend partly on species interactions within and among trophic levels. Experimental work has demonstrated the impact of species interactions on the species involved, but it remains unclear whether these effects can also be detected in long‐term time series across heterogeneous landscapes. We analyzed a 19‐year time series of patch occupancy by the Glanville fritillary

    更新日期:2020-10-08
  • Evidence for Elton's diversity-invasibility hypothesis from belowground.
    Ecology (IF 4.7) Pub Date : 2020-09-07
    Zhijie Zhang,Yanjie Liu,Caroline Brunel,Mark van Kleunen

    Sixty year ago, Charles Elton posed that species‐rich communities should be more resistant to biological invasion. Still, little is known about which processes could drive the diversity–invasibility relationship. Here we examined whether soil‐microbe‐mediated apparent competition on alien invaders is more negative when the soil originates from multiple native species. We trained soils with five individually

    更新日期:2020-10-08
  • Secondary metabolites in a neotropical shrub: spatiotemporal allocation and role in fruit defense and dispersal.
    Ecology (IF 4.7) Pub Date : 2020-09-06
    Lauren D Maynard,Heather L Slinn,Andrea E Glassmire,Bernal Matarrita-Carranza,Craig D Dodson,Trang T Nguyen,Megan J Burroughs,Lee A Dyer,Christopher S Jeffrey,Susan R Whitehead

    Deciphering the ecological roles of plant secondary metabolites requires integrative studies that assess both the allocation patterns of compounds and their bioactivity in ecological interactions. Secondary metabolites have been primarily studied in leaves, but many are unique to fruits and can have numerous potential roles in interactions with both mutualists (seed dispersers) and antagonists (pathogens

    更新日期:2020-10-08
  • An assessment of statistical methods for non-independent data in ecological meta-analyses.
    Ecology (IF 4.7) Pub Date : 2020-09-07
    Chao Song,Scott D Peacor,Craig W Osenberg,James R Bence

    In ecological meta‐analyses, nonindependence among observed effect sizes from the same source paper is common. If not accounted for, nonindependence can seriously undermine inferences. We compared the performance of four meta‐analysis methods that attempt to address such nonindependence and the standard random‐effect model that ignores nonindependence. We simulated data with various types of within‐paper

    更新日期:2020-10-08
  • Requirements for the spatial storage effect are weakly evident for common species in natural annual plant assemblages.
    Ecology (IF 4.7) Pub Date : 2020-09-03
    Isaac R Towers,Catherine H Bowler,Margaret M Mayfield,John M Dwyer

    Coexistence in spatially varying environments is theorized to be promoted by a variety of mechanisms including the spatial storage effect. The spatial storage effect promotes coexistence when (1) species have unique vital rate responses to their spatial environment and, when abundant, (2) experience stronger competition in the environmental patches where they perform better. In a naturally occurring

    更新日期:2020-10-08
  • Effects of plant functional group removal on CO2 fluxes and belowground C stocks across contrasting ecosystems.
    Ecology (IF 4.7) Pub Date : 2020-08-26
    Roger Grau-Andrés,David A Wardle,Michael J Gundale,Claire N Foster,Paul Kardol

    Changes in plant communities can have large effects on ecosystem carbon (C) dynamics and long‐term C stocks. However, how these effects are mediated by environmental context or vary among ecosystems is not well understood. To study this, we used a long‐term plant removal experiment set up across 30 forested lake islands in northern Sweden that collectively represent a strong gradient of soil fertility

    更新日期:2020-10-07
  • Eruptive dynamics are common in managed mammal populations.
    Ecology (IF 4.7) Pub Date : 2020-08-28
    Richard P Duncan,Nick Dexter,Adrian Wayne,Jim Hone

    Successful conservation management is often based on the principle that small or declining populations can recover if we identify and remove the factors that caused them to decline in the first place. But what form will that recovery take? Theory tells us that when a strong limiting factor is removed, a population should increase in size to where it becomes limited by some other factor. However, if

    更新日期:2020-10-07
  • Where and when to hunt? Decomposing predation success of an ambush carnivore.
    Ecology (IF 4.7) Pub Date : 2020-08-27
    J A Smith,E Donadio,O R Bidder,J N Pauli,M J Sheriff,P L Perrig,A D Middleton

    Predator–prey games emerge when predators and prey dynamically respond to the behavior of one another, driving the outcomes of predator–prey interactions. Predation success is a function of the combined probabilities of encountering and capturing prey, which are influenced by both prey behavior and environmental features. While the relative importance of encounter and capture probabilities have been

    更新日期:2020-10-07
  • Genomic variation among populations provides insight into the causes of metacommunity survival.
    Ecology (IF 4.7) Pub Date : 2020-09-03
    Laura Melissa Guzman,Diane S Srivastava

    Predators and prey interact at small spatial scales, but during their lifetime disperse at much larger spatial scales. Trophic metacommunity theory proposes that dispersal is a critical process that determines food web structure at small and large scales. The application of metacommunity theory to empirical systems remains elusive because key parameters such as dispersal and interaction strengths have

    更新日期:2020-10-07
  • Recovery of a large herbivore changes regulation of seagrass productivity in a naturally grazed Caribbean ecosystem.
    Ecology (IF 4.7) Pub Date : 2020-09-03
    Alexandra G Gulick,Robert A Johnson,Clayton G Pollock,Zandy Hillis-Starr,Alan B Bolten,Karen A Bjorndal

    What happens in meadows after populations of natural grazers rebound following centuries of low abundance? Many seagrass ecosystems are now experiencing this phenomenon with the recovery of green turtles (Chelonia mydas), large‐bodied marine herbivores that feed on seagrasses. These seagrass ecosystems provide a rare opportunity to study ecosystem‐wide shifts that result from a recovery of herbivores

    更新日期:2020-10-07
  • Extended phenotypes on coral reefs: cryptic phenotypes modulate coral‐vermetid interactions
    Ecology (IF 4.7) Pub Date : 2020-10-03
    A.L. Brown; E.A. Hamman; J.S. Shima; J.P. Wares; C.W. Osenberg

    Phenotypic variation can lead to variation in the strength and outcome of species interactions. Variation in phenotypic traits can arise due to plastic responses to environmental stimuli, underlying genetic variation, or both, and may reflect differences in the focal organism or aspects of the extended phenotype (e.g., associated microbes). We used a reciprocal transplant experiment of Porites corals

    更新日期:2020-10-04
  • Intraspecific variation and energy channel coupling within a Chilean kelp forest
    Ecology (IF 4.7) Pub Date : 2020-10-02
    Emma A. Elliott Smith; Chris Harrod; Felipe Docmac; Seth D. Newsome

    The widespread importance of variable types of primary production, or energy channels, to consumer communities has become increasingly apparent. However, the mechanisms underlying this ‘multichannel’ feeding remain poorly understood, especially for aquatic ecosystems that pose unique logistical constraints given the diversity of potential energy channels. Here, we use bulk tissue isotopic analysis

    更新日期:2020-10-04
  • Direct and indirect effects of a keystone engineer on a shrubland‐prairie food web
    Ecology (IF 4.7) Pub Date : 2020-10-01
    Courtney J. Duchardt; Lauren M. Porensky; Ian S. Pearse

    Keystone engineers are critical drivers of biodiversity throughout ecosystems worldwide. Within the North American Great Plains, the black‐tailed prairie dog is an imperiled ecosystem engineer and keystone species with well‐documented impacts on the flora and fauna of rangeland systems. However, because this species affects ecosystem structure and function in myriad ways (i.e., as a consumer, a prey

    更新日期:2020-10-02
  • Predation risk alters life history strategies in an oceanic copepod
    Ecology (IF 4.7) Pub Date : 2020-10-01
    Kristina Øie Kvile; Dag Altin; Lotte Thommesen; Josefin Titelman

    The ubiquitous oceanic copepod Calanus finmarchicus is the major link between primary producers and important fish stocks in the North Atlantic Ocean and adjacent seas. Despite over a century of research on growth and development of this key species, the effect of predation risk on these processes remains elusive. We tested how food level and chemical cues from a fish predator influence growth and

    更新日期:2020-10-02
  • Woody plant growth increases with precipitation intensity in a cold semi‐arid system
    Ecology (IF 4.7) Pub Date : 2020-10-01
    Martin C. Holdrege; Karen H. Beard; Andrew Kulmatiski

    As the atmosphere warms, precipitation events become larger, but less frequent. Yet, there is fundamental disagreement about how increased precipitation intensity will affect vegetation. Walter’s two‐layer hypothesis and experiments testing it have demonstrated that precipitation intensity can increase woody plant growth. Observational studies have found the opposite pattern. Not only are the patterns

    更新日期:2020-10-02
  • Adaptations to light predict the foraging niche and disassembly of avian communities in tropical countrysides
    Ecology (IF 4.7) Pub Date : 2020-10-01
    Ian J. Ausprey; Felicity L. Newell; Scott K. Robinson

    The role of light in partitioning ecological niche space remains a frontier in understanding the assembly of terrestrial vertebrate communities and their response to global change. Leveraging recent advances in biologging technology and intensive field surveys of cloud forest bird communities across an agricultural land use gradient in the Peruvian Andes, we demonstrate that eye size predicts (a) the

    更新日期:2020-10-02
  • Resource-enhancing global changes drive a whole-ecosystem shift to faster cycling but decrease diversity.
    Ecology (IF 4.7) Pub Date : 2020-09-01
    Anu Eskelinen,Kelly Gravuer,Stan Harpole,Susan Harrison,Risto Virtanen,Yann Hautier

    Many global changes take the form of resource enhancements that have potential to transform multiple aspects of ecosystems from slower to faster cycling, including a suite of both above‐ and belowground variables. We developed a novel analytic approach to measure integrated ecosystem responses to resource‐enhancing global changes, and how such whole ecosystem slow‐to‐fast transitions are linked to

    更新日期:2020-10-02
  • Functional differentiation accompanies taxonomic homogenization in freshwater fish communities.
    Ecology (IF 4.7) Pub Date : 2020-09-02
    Sara E Campbell,Nicholas E Mandrak

    The addition of nonnative species and loss of native species has modified the composition of communities globally. Although changes in β‐diversity have been well documented, there is a need for studies incorporating multiple time periods, more than one dimension of biodiversity, and inclusion of nestedness and turnover components to understand the underlying mechanisms structuring community composition

    更新日期:2020-10-02
  • The response of lianas to 20 years of nutrient addition in a Panamanian forest.
    Ecology (IF 4.7) Pub Date : 2020-09-07
    Stefan A Schnitzer,Sergio Estrada-Villegas,S Joseph Wright

    Over the past two decades, liana density and basal area have been increasing in many tropical forests, which has profound consequences for forest diversity and functioning. One hypothesis to explain increasing lianas is elevated nutrient deposition in tropical forests resulting from fossil fuels, agricultural fertilizer, and biomass burning. We tested this hypothesis by surveying all lianas ≥1 cm in

    更新日期:2020-10-02
  • Dispersal limitation and fire feedbacks maintain mesic savannas in Madagascar.
    Ecology (IF 4.7) Pub Date : 2020-09-02
    Nikunj Goel,Erik Scott Van Vleck,Julie C Aleman,A Carla Staver

    Madagascar is regarded by some as one of the most degraded landscapes on Earth, with estimates suggesting that 90% of forests have been lost to indigenous Tavy farming. However, the extent of this degradation has been challenged: paleoecological data, phylogeographic analysis, and species richness indicate that pyrogenic savannas in central Madagascar predate human arrival, even though rainfall is

    更新日期:2020-10-02
  • Scaling up biodiversity-ecosystem function relationships across space and over time.
    Ecology (IF 4.7) Pub Date : 2020-08-27
    Jiangxiao Qiu,Bradley J Cardinale

    Understanding how to scale up effects of biological diversity on ecosystem functioning and services remains challenging. There is a general consensus that biodiversity loss alters ecosystem processes underpinning the goods and services upon which humanity depends. Yet most of that consensus stems from experiments performed at small spatial scales for short time frames, which limits transferability

    更新日期:2020-10-02
  • Scale-dependent effects of host patch traits on species composition in a stickleback parasite metacommunity.
    Ecology (IF 4.7) Pub Date : 2020-09-03
    Daniel I Bolnick,Emlyn J Resetarits,Kimberly Ballare,Yoel E Stuart,William E Stutz

    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 parasites infecting a metapopulation of threespine stickleback fish from 34 lakes on

    更新日期:2020-10-02
  • Soil origin corresponds with variation in growth of an invasive Centaurea, but not of non-invasive congeners.
    Ecology (IF 4.7) Pub Date : 2020-07-28
    Daniel Montesinos,Ragan M Callaway

    Why only a small proportion of exotic species become invasive is an unresolved question. Escape from the negative effects of soil biota in the native range can be important for the success of many invasives, but comparative effects of soil biota on less successful exotic species are poorly understood. Studies of other mechanisms suggest that such comparisons might be fruitful. Seeds of three closely

    更新日期:2020-10-02
  • Soil precipitation legacies influence intraspecific plant-soil feedback.
    Ecology (IF 4.7) Pub Date : 2020-08-19
    Kerri M Crawford,Christine V Hawkes

    Feedbacks between plants and soil microbial communities can play an important role in structuring plant communities. However, little is known about how soil legacies caused by environmental disturbances such as drought and extreme precipitation events may affect plant–soil feedback or whether plant–soil feedback operates within species as it does between species. If soil legacies alter plant–soil feedback

    更新日期:2020-10-02
  • Distance‐based methods for estimating density of nonrandomly distributed populations
    Ecology (IF 4.7) Pub Date : 2020-07-31
    Guochun Shen; Xihua Wang; Fangliang He

    Population density is the most basic ecological parameter for understanding population dynamics and biological conservation. Distance‐based methods (or plotless methods) are considered as a more efficient but less robust approach than quadrat‐based counting methods in estimating plant population density. The low robustness of distance‐based methods mainly arises from the oversimplistic assumption of

    更新日期:2020-10-02
  • Shedding light on environmentally transmitted parasites: lighter conditions within lakes restrict epidemic size.
    Ecology (IF 4.7) Pub Date : 2020-08-27
    Clara L Shaw,Spencer R Hall,Erin P Overholt,Carla E Cáceres,Craig E Williamson,Meghan A Duffy

    Parasite fitness depends on a successful journey from one host to another. For parasites that are transmitted environmentally, abiotic conditions might modulate the success of this journey. Here we evaluate how light, a key abiotic factor, influences spatiotemporal patterns of zooplankton disease where light varies seasonally, across lakes, and with depth in a lake. In an in situ experiment using those

    更新日期:2020-09-28
  • Soil biota increase the likelihood for coexistence among competing plant species
    Ecology (IF 4.7) Pub Date : 2020-07-31
    Claudia Stein; Scott A. Mangan

    Theory predicts that stable species coexistence will occur when population growth rates of competitively dominant species are suppressed when at high conspecific density. Although there is now compelling evidence that plant communities exhibit negative density dependence, the relative importance of the underlying processes leading to these patterns is rarely tested. We coupled reciprocal greenhouse

    更新日期:2020-09-28
  • Temperature but not nutrient addition affects abundance and assemblage structure of colonizing aquatic insects
    Ecology (IF 4.7) Pub Date : 2020-09-27
    Sarah C. McNamara; Matthew R. Pintar; William J. Resetarits

    Abiotic conditions are important considerations in the species sorting process, which ultimately determines the distribution and abundance of species. Freshwater ecosystems will be impacted by ongoing temperature rise and other anthropogenically‐induced changes, such as nutrient enrichment and eutrophication. Changing characteristics of freshwater habitats will likely impact organisms in numerous ways

    更新日期:2020-09-28
  • Interspecific competition between resident and wintering birds: experimental evidence and consequences of coexistence
    Ecology (IF 4.7) Pub Date : 2020-09-27
    Luke L. Powell; Elizabeth M. Ames; James R. Wright; Jason Matthiopoulos; Peter P. Marra

    The contribution of interspecific competition to structuring population and community dynamics remains controversial and poorly tested. Specifically, interspecific competition has long been thought to influence the structure of migrant‐resident bird communities in winter, yet experimental evidence remains elusive. The arrival of billions of songbirds into Neotropical habitats, where they co‐exist with

    更新日期:2020-09-28
  • Soil dynamics in forest restoration: a data set for temperate and tropical regions
    Ecology (IF 4.7) Pub Date : 2020-09-27
    Adriana Allek; Renato Crouzeilles

    Restoring forest ecosystems has become a global priority. Yet, soil dynamics is still poorly assessed among restoration studies and lacks knowledge on how soil is affected by forest restoration process. Here, we compile information on soil dynamics in forest restoration based on soil physical, chemical and biological attributes in temperate and tropical forest regions. It encompasses 50 scientific

    更新日期:2020-09-28
  • Plant diversity and litter accumulation mediate the loss of foliar endophyte fungal richness following nutrient addition
    Ecology (IF 4.7) Pub Date : 2020-09-27
    Jeremiah A. Henning; Linda Kinkel; Georgiana May; Candice Y. Lumibao; Eric W. Seabloom; Elizabeth T. Borer

    Foliar fungal endophytes are ubiquitous plant symbionts that can affect plant growth and reproduction via their roles in pathogen and stress tolerance, as well as plant hormonal signaling. Despite their importance, we have a limited understanding of how foliar fungal endophytes respond to varying environmental conditions such as nutrient inputs. The responses of foliar fungal endophyte communities

    更新日期:2020-09-28
  • Molybdenum, phosphorus, and pH do not constrain nitrogen fixation in a tropical forest in the southeastern Amazon
    Ecology (IF 4.7) Pub Date : 2020-09-27
    Michelle Y. Wong; Christopher Neill; Roxanne Marino; Divino Silvério; Robert W. Howarth

    High rates of biological nitrogen fixation (BNF) are commonly reported for tropical forests, but most studies have been conducted in regions that receive substantial inputs of molybdenum (Mo) from atmospheric dust and sea‐salt aerosols. Even in these regions, the low availability of Mo can constrain free‐living BNF catalyzed by heterotropic bacteria and archaea. We hypothesized that in regions where

    更新日期:2020-09-28
  • Disentangling dimensions of phytochemical diversity: alpha and beta have contrasting effects on an insect herbivore.
    Ecology (IF 4.7) Pub Date : 2020-08-03
    Andrea E Glassmire,Luke N Zehr,William C Wetzel

    Phytochemical diversity is comprised of two main dimensions—the average (alpha) within‐plant neighbors or the difference (beta) in the composition of chemicals between plant neighbors. Research, however, has primarily examined the consequences of phytochemical diversity on herbivore performance through a single dimension, even though diversity is multidimensional. Furthermore, the ecological role of

    更新日期:2020-09-28
  • High levels of phenological asynchrony between specialized pollinators and plants with short flowering phases
    Ecology (IF 4.7) Pub Date : 2020-08-16
    María A. Maglianesi; Paul Hanson; Emanuel Brenes; Gita Benadi; Matthias Schleuning; Bo Dalsgaard

    Species phenology plays a key role in determining mutualistic interactions, such as those between plants and pollinators. Notably, temporal synchrony shapes the patterns of interactions by influencing the probability of encounters between interacting partners; thus, species phenology greatly contributes to structuring ecological communities. In these communities, specialized species are expected to

    更新日期:2020-09-28
  • Co‐occurrence history increases ecosystem stability and resilience in experimental plant communities
    Ecology (IF 4.7) Pub Date : 2020-09-26
    Sofia J. van Moorsel; Terhi Hahl; Owen L. Petchey; Anne Ebeling; Nico Eisenhauer; Bernhard Schmid; Cameron Wagg

    Understanding factors that maintain ecosystem stability is critical in the face of environmental change. Experiments simulating species loss from grassland have shown that losing biodiversity decreases ecosystem stability. However, as the originally sown experimental communities with reduced biodiversity develop, plant evolutionary processes or the assembly of interacting soil organisms may allow ecosystems

    更新日期:2020-09-26
  • Negative effects of an allelopathic invader on AM fungal plant species drive community‐level responses
    Ecology (IF 4.7) Pub Date : 2020-09-24
    Morgan D. Roche; Ian S. Pearse; Lalasia Bialic‐Murphy; Stephanie N. Kivlin; Helen R. Sofaer; Susan Kalisz

    The mechanisms causing invasive species impact are rarely empirically tested, limiting our ability to understand and predict subsequent changes in invaded plant communities. Invader disruption of native mutualistic interactions is a mechanism expected to have negative effects on native plant species. Specifically, disruption of native plant‐fungal mutualisms may provide non‐mycorrhizal plant invaders

    更新日期:2020-09-25
  • Spotty at best: brook trout exploit large, adult spotted salamanders in the early spring
    Ecology (IF 4.7) Pub Date : 2020-09-24
    T. Fernandes; B.C. McMeans

    Seasonal transitions in north‐temperate ecosystems impose uniquely variable abiotic conditions on resident biota. Summer is pervasively considered the time of peak production and represents a time of active foraging and energy accumulation in many fish species (Shuter et al. 2012). However, in north‐temperate systems, important energy sources are not limited to summer months. Instead, some of the most

    更新日期:2020-09-25
  • Environmental conditions modulate compensatory effects of site dependence in a food‐caching passerine
    Ecology (IF 4.7) Pub Date : 2020-09-24
    Alex O. Sutton; Dan Strickland; Nikole E. Freeman; D. Ryan Norris

    Although density regulates the abundance of most wild animal populations by influencing vital rates, such as fecundity and survival, the mechanisms responsible for generating negative density‐dependence are unclear for many species. Site‐dependence occurs when there is preferential filling of high‐quality territories, which results in higher per capita vital rates at low densities because a larger

    更新日期:2020-09-25
  • Integrating distance sampling and presence‐only data to estimate species abundance
    Ecology (IF 4.7) Pub Date : 2020-09-24
    Matthew T. Farr; David S. Green; Kay E. Holekamp; Elise F. Zipkin

    Integrated models combine multiple data types within a unified analysis to estimate species abundance and covariate effects. By sharing biological parameters, integrated models improve the accuracy and precision of estimates compared to separate analyses of individual datasets. We developed an integrated point process model to combine presence‐only and distance sampling data for estimation of spatially‐explicit

    更新日期:2020-09-25
  • Forest conversion to oil palm compresses food chain length in tropical streams.
    Ecology (IF 4.7) Pub Date : 2020-09-24
    Clare L Wilkinson,Kenny W J Chua,Roswitha Fiala,Jia Huan Liew,Victoria Kemp,Arman Hadi Fikri,Robert M Ewers,Pavel Kratina,Darren C J Yeo

    In Southeast Asia, biodiversity‐rich forests are being extensively logged and converted to oil palm monocultures. Although the impacts of these changes on biodiversity are largely well documented, we know little about how these large‐scale impacts affect freshwater trophic ecology. We used stable isotope analyses (SIA) to determine the impacts of land‐use changes on the relative contribution of allochthonous

    更新日期:2020-09-24
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