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  • Spatial scale, neighbouring plants and variation in plant volatiles interactively determine the strength of host–parasitoid relationships
    Oikos (IF 3.37) Pub Date : 2020-06-02
    Yavanna Aartsma; Silvia Pappagallo; Wopke van der Werf; Marcel Dicke; Felix J. J. A. Bianchi; Erik H. Poelman

    Species‐specific responses to the environment can moderate the strength of interactions between plants, herbivores and parasitoids. However, the ways in which characteristics of plants, such as genotypic variation in herbivore induced volatiles (HIPVs) that attract parasitoids, affect trophic interactions in different contexts of plant patch size and plant neighbourhood is not well understood. We conducted

    更新日期:2020-07-02
  • Relationships between conifer constitutive and inducible defenses against bark beetles change across levels of biological and ecological scale
    Oikos (IF 3.37) Pub Date : 2020-04-27
    Michael Howe; Charles J. Mason; Claudio Gratton; Ken Keefover‐Ring; Kimberly Wallin; Alvin Yanchuk; Jun Zhu; Kenneth F. Raffa

    Plants resist herbivores using both constitutive and induced defenses. Limited resources and biosynthesis costs of anti‐herbivore compounds may impose tradeoffs between these modalities, but the evidence is conflicting. We postulated that biological and ecological scale may influence potential tradeoffs and analyzed constitutive‐induced relationships from genotypic to interspecific levels. We focused

    更新日期:2020-07-02
  • Predator‐dependent functional responses alter the coexistence and indirect effects among prey that share a predator
    Oikos (IF 3.37) Pub Date : 2020-06-02
    Kyle E. Coblentz; John P. DeLong

    Predator functional responses describe predator feeding rates as a function of prey abundance and are central to predator–prey theory. Despite ample evidence that functional responses also depend on predator abundance, theory incorporating predator‐dependent functional responses has focused almost exclusively on specialist predator–prey pairs or linear food chains. This leaves a large gap in our knowledge

    更新日期:2020-06-30
  • Clonal integration enhances performance of an invasive grass
    Oikos (IF 3.37) Pub Date : 2020-06-29
    James A. Estrada; Chris H. Wilson; S. Luke Flory

    While many clonal plants are highly successful invaders, the contribution of clonal integration (i.e., the translocation of resources among ramets) to invasion is often unknown. We used model simulations to ask if clonal integration would facilitate photosynthate translocation, if the performance of daughter ramets might be enhanced by clonal integration, and if shaded ramets benefited relatively more

    更新日期:2020-06-29
  • Primary determinants of communities in deadwood vary among taxa but are regionally consistent
    Oikos (IF 3.37) Pub Date : 2020-06-29
    Jörg Müller; Mike Ulyshen; Sebastian Seibold; Marc Cadotte; Anne Chao; Claus Bässler; Sebastian Vogel; Jonas Hagge; Ingmar Weiß; Petr Baldrian; Vojtěch Tláskal; Simon Thorn

    The evolutionary split between gymnosperms and angiosperms has far‐reaching implications for the current communities colonizing trees. The inherent characteristics of dead wood include its role as a spatially scattered habitat of plant tissue, transient in time. Thus, local assemblages in deadwood forming a food web in a necrobiome should be affected not only by dispersal ability but also by host tree

    更新日期:2020-06-29
  • Selective disappearance of frail juveniles: consequences for understanding social dominance in adult male elephant seals
    Oikos (IF 3.37) Pub Date : 2020-06-29
    Kyle J. Lloyd; W. Chris Oosthuizen; Rémi Fay; Marthán N. Bester; P. J. Nico de Bruyn

    Individual heterogeneity is variation in trait expression observed among individuals of a population. Individual heterogeneity in the pre‐breeder stage of development is of importance given its eventual contribution to the breeding population's overall reproductive performance. Yet most studies do not consider the role of individual heterogeneity in pre‐breeders when investigating population processes

    更新日期:2020-06-29
  • Leaf traits can be used to predict rates of litter decomposition
    Oikos (IF 3.37) Pub Date : 2020-06-29
    Marc V. Rosenfield; Jennifer L. Funk; Jason K. Keller; Catrina Clausen; Kimberlee Cyphers

    Strong relationships exist between litter chemistry traits and rates of litter decomposition. However, leaf traits are more commonly found in online trait databases than litter traits and fewer studies have examined how well leaf traits predict litter decomposition rates. Furthermore, while bulk leaf nitrogen (N) content is known to regulate litter decomposition, few studies have explored the importance

    更新日期:2020-06-29
  • The stronger, the better – trait hierarchy is driving alien species interaction
    Oikos (IF 3.37) Pub Date : 2020-06-29
    Viktoria Ferenc; Christine S. Sheppard

    Regardless of the fact that multiple invaders commonly co‐occur in native ecosystems, research on alien species interactions is lacking. Therefore, we aim at identifying the underlying mechanisms of alien species interactions by determining whether individual traits, phylogenetic distance, multi‐trait based distance or hierarchical trait differences explain alien plant interactions best. We quantify

    更新日期:2020-06-29
  • Bacterial phylogeny predicts volatile organic compound composition and olfactory response of an aphid parasitoid
    Oikos (IF 3.37) Pub Date : 2020-06-02
    Tim Goelen; Islam S. Sobhy; Christophe Vanderaa; Felix Wäckers; Hans Rediers; Tom Wenseleers; Hans Jacquemyn; Bart Lievens

    There is increasing evidence that microorganisms emit a wide range of volatile compounds (mVOCs, microbial volatile organic compounds) that act as insect semiochemicals, and therefore play an important role in insect behaviour. Although it is generally believed that phylogenetically closely related microbes tend to have similar phenotypic characteristics and therefore may elicit similar responses in

    更新日期:2020-06-23
  • Which mechanisms are responsible for population patterns across different quality habitats? A new approach
    Oikos (IF 3.37) Pub Date : 2020-06-20
    Benjamin A. Belgrad; Blaine D. Griffen

    Spatial patterns in the abundance, distribution, and characteristics of organisms are a fundamental feature of all ecosystems. However, achieving a mechanistic understanding of the forces behind these population patterns is a major challenge for ecologists due to the number and diversity of variables and relationships involved. Here, we developed a spatially‐explicit agent‐based model to determine

    更新日期:2020-06-23
  • Avian trait specialization is negatively associated with urban tolerance
    Oikos (IF 3.37) Pub Date : 2020-06-20
    Corey T. Callaghan; Yanina Benedetti; John H. Wilshire; Federico Morelli

    Generalist species — with their wide niche breadths — are often associated with urban environments, while specialist species are likely to be most at‐risk of increasing urbanization processes. But studies which quantify the relationship between trait specialization (i.e., niche breadth) and urban tolerance are generally methodologically limited, with repeatable robust methods to easily quantify this

    更新日期:2020-06-23
  • Parasite transmission in aquatic ecosystems under temperature change: effects of host activity and elimination of parasite larvae by filter‐feeders
    Oikos (IF 3.37) Pub Date : 2020-06-20
    Misha Gopko; Ekaterina Mironova; Anna Pasternak; Victor Mikheev; Jouni Taskinen

    A moderate raise in temperature was suggested to enhance the impact of parasites on aquatic ecosystems. Under higher temperatures, poikilothermic animals (e.g. fish) increase their activity, which can result in a more frequent encounter with parasites. However, temperature increase may also trigger processes counteracting an increased risk of parasitic infections. Thus, the removal of free‐living stages

    更新日期:2020-06-23
  • Infection state can affect host migratory decisions
    Oikos (IF 3.37) Pub Date : 2020-06-20
    Naven Narayanan Venkatanarayanan; Sandra Ann Binning; Allison K. Shaw

    Organisms across a wide range of taxa use migration as a strategy to avoid, reduce or recover from parasitic infection. Previous work has identified three different processes by which migration can help reduce infection risk and/or costs: migratory escape from infection, migratory culling of infected individuals, and migratory recovery from infection. However, most theoretical modelling of host migration

    更新日期:2020-06-23
  • Biomass–density relationships of plant communities deviate from the self‐thinning rule due to age structure and abiotic stress
    Oikos (IF 3.37) Pub Date : 2020-06-02
    Maximiliane Marion Herberich; Sebastian Gayler; Madhur Anand; Katja Tielbörger

    A pertinent debate in plant ecology centers around the generality of the self‐thinning rule. However, studies focused on highly simplified settings such as even‐aged monospecific populations or optimal conditions. This neglects the fact that most natural communities, to which the classical self‐thinning slope is often applied, are age‐structured, composed of multiple species and exposed to various

    更新日期:2020-06-18
  • Move to nocturnality not a universal trend in carnivore species on disturbed landscapes
    Oikos (IF 3.37) Pub Date : 2020-06-02
    Sandra Frey; J. P. Volpe; N. A. Heim; J. Paczkowski; J. T. Fisher

    Anthropogenic landscape change is a leading driver of biodiversity loss. Preceding dramatic changes such as wildlife population declines and range shifts, more subtle responses may signal impending larger‐scale change. For example, disturbance‐induced shifts to species’ activity patterns may disrupt temporal niche partitioning along the 24‐h time axis, compromising community structure via altered competitive

    更新日期:2020-06-18
  • Intraspecific trait variation in personality‐related movement behavior promotes coexistence
    Oikos (IF 3.37) Pub Date : 2020-06-15
    Alexander Milles; Melanie Dammhahn; Volker Grimm

    Movement behavior is an essential element of fundamental ecological processes such as competition and predation. Although intraspecific trait variation (ITV) in movement behaviors is pervasive, its consequences for ecological community dynamics are still not fully understood. Using a newly developed individual‐based model, we analyzed how given and constant ITVs in foraging movement affect differences

    更新日期:2020-06-15
  • Topography consistently drives intra‐ and inter‐specific leaf trait variation within tree species complexes in a Neotropical forest
    Oikos (IF 3.37) Pub Date : 2020-06-11
    Sylvain Schmitt; Bruno Hérault; Émilie Ducouret; Anne Baranger; Niklas Tysklind; Myriam Heuertz; Éric Marcon; Saint Omer Cazal; Géraldine Derroire

    Tropical forests shelter the highest species diversity worldwide, although genus diversity is lower than expected. In the species‐rich genera, species complexes are composed of closely‐related species that share large amounts of genetic variation. Despite the key role of species complexes in diversification, evolution, and functioning of ecological communities, little is known on why species complexes

    更新日期:2020-06-11
  • Asymmetric benefits of a heterospecific breeding association vary with habitat, conspecific abundance, and breeding stage
    Oikos (IF 3.37) Pub Date : 2020-06-11
    Rose J. Swift; Michael J. Anteau; Erin A. Roche; Mark H. Sherfy; Dustin L. Toy; Megan M. Ring

    Heterospecific breeding associations may benefit individuals by mitigating predation risk but may also create costs if they increase competition for resources or are more easily detectable by predators. Our understanding of the interactions among hetero‐ and conspecifics is often lacking in mixed species colonies. Here, we test how the presence of hetero‐ and conspecifics influence nest and chick survival

    更新日期:2020-06-11
  • Functional traits determine why species belong to the dark diversity in a dry grassland fragmented landscape
    Oikos (IF 3.37) Pub Date : 2020-06-08
    Rocío Belinchón; Lucie Hemrová; Zuzana Münzbergová

    A challenge for nature conservation is to know why many species are absent from suitable habitats and whether they might be able to disperse and to establish. Here, we used 272 dry grassland patches within a fragmented landscape to investigate the role of local abiotic conditions and dispersal filtering in determining the likelihood of vascular plants to belong to the dark diversity (i.e. absent portion

    更新日期:2020-06-08
  • Nest attentiveness drives nest predation in arctic sandpipers
    Oikos (IF 3.37) Pub Date : 2020-06-08
    Nicolas Meyer; Loïc Bollache; François‐Xavier Dechaume‐Moncharmont; Jérôme Moreau; Eve Afonso; Anders Angerbjörn; Joël Bêty; Dorothée Ehrich; Vladimir Gilg; Marie‐Andrée Giroux; Jannik Hansen; Richard B. Lanctot; Johannes Lang; Nicolas Lecomte; Laura McKinnon; Jeroen Reneerkens; Sarah T. Saalfeld; Brigitte Sabard; Niels M. Schmidt; Benoît Sittler; Paul Smith; Aleksandr Sokolov; Vasiliy Sokolov; Natalia

    Most birds incubate their eggs to allow embryo development. This behaviour limits the ability of adults to perform other activities. Hence, incubating adults trade‐off incubation and nest protection with foraging to meet their own needs. Parents can either cooperate to sustain this trade‐off or incubate alone. The main cause of reproductive failure at this reproductive stage is predation and adults

    更新日期:2020-06-08
  • Multi‐taxon inventory reveals highly consistent biodiversity responses to ecospace variation
    Oikos (IF 3.37) Pub Date : 2020-05-25
    Ane Kirstine Brunbjerg; Hans Henrik Bruun; Lars Dalby; Aimée T. Classen; Camilla Fløjgaard; Tobias G. Frøslev; Oskar Liset Pryds Hansen; Toke Thomas Høye; Jesper Erenskjold Moeslund; Jens‐Christian Svenning; Rasmus Ejrnæs

    Amidst the global biodiversity crisis, identifying general principles for variation of biodiversity remains a key challenge. Scientific consensus is limited to a few macroecological rules, such as species richness increasing with area, which provide limited guidance for conservation. In fact, few agreed ecological principles apply at the scale of sites or reserve management, partly because most community‐level

    更新日期:2020-05-25
  • Temporal flexibility in the structure of plant–pollinator interaction networks
    Oikos (IF 3.37) Pub Date : 2020-05-25
    Paul J. CaraDonna; Nickolas M. Waser

    Ecological communities consist of species that are joined in complex networks of interspecific interaction. These interactions often form and dissolve rapidly, but this temporal variation is not well integrated into our understanding of the causes and consequences of network structure. If interspecific interactions exhibit temporal flexibility across time periods over which organisms co‐occur, then

    更新日期:2020-05-25
  • Decomposability of lichens and bryophytes from across an elevational gradient under standardized conditions
    Oikos (IF 3.37) Pub Date : 2020-05-22
    Kristel van Zuijlen; Ruben E. Roos; Kari Klanderud; Simone I. Lang; David A. Wardle; Johan Asplund

    Lichens and bryophytes are abundant primary producers in high latitude and high elevation ecosystems, and they play an important role in ecosystem processes such as decomposition and nutrient cycling. Despite their importance, little is known about the decomposability of lichens and bryophytes either among or within species, at the whole community level, or how this decomposability is affected by their

    更新日期:2020-05-22
  • An empiricist's guide to modern coexistence theory for competitive communities
    Oikos (IF 3.37) Pub Date : 2020-05-22
    Casey M. Godwin; Feng‐Hsun Chang; Bradley J. Cardinale

    While many ecological theories have historically invoked niche differences as the primary mechanism allowing species coexistence, we now know that coexistence in competitive communities depends on the balance of two opposing forces: niche differences (ND) that determine how species limit their own growth rate versus that of their competitor, and relative fitness differences (RFD) that establish competitive

    更新日期:2020-05-22
  • Lineage and latitudinal variation in Phragmites australis tolerance to herbivory: implications for invasion success
    Oikos (IF 3.37) Pub Date : 2020-05-16
    Jordan R. Croy; Laura A. Meyerson; Warwick J. Allen; Ganesh P. Bhattarai; James T. Cronin

    Herbivores play a critical role in plant invasions either by facilitating or inhibiting species establishment and spread. However, relatively few studies with invasive plant species have focused on the role of plant tolerance and how it varies geographically to influence invasion success. We conducted a common garden study using two lineages (native and invasive) of the grass Phragmites australis that

    更新日期:2020-05-16
  • Dwarfism in close continental amphibian populations despite lack of genetic isolation
    Oikos (IF 3.37) Pub Date : 2020-05-11
    Lee Hyeun‐Ji; Juli Broggi; Gregorio Sánchez‐Montes; Carmen Díaz‐Paniagua; Ivan Gomez‐Mestre

    Ample variation in body size is common in vertebrates over extensive geographical distances, or in isolated populations, where effective geographical barriers may cause dwarfism or gigantism. Here we study potential causes of extreme size reduction in continental populations of amphibians within a short geographical distance and in the absence of geographical barriers. Natterjack toads Epidalea calamita

    更新日期:2020-05-11
  • Evaluating Sphagnum traits in the context of resource economics and optimal partitioning theories
    Oikos (IF 3.37) Pub Date : 2020-05-11
    Tobi A. Oke; Merritt R. Turetsky

    Tradeoffs between key aspects of plant performance such as resource acquisition and allocation underpin several trait‐based theories that have been derived for vascular plants. However, due to difficulty in quantifying traits in nonvascular plants, our theoretical understanding of how traits govern the physiological and ecological preferences of nonvascular plant species is quite limited. Here, we

    更新日期:2020-05-11
  • Live fast, die old: oxidative stress as a potential mediator of an unexpected life‐history evolution
    Oikos (IF 3.37) Pub Date : 2020-05-09
    Nedim Tüzün; Marjan De Block; Robby Stoks

    Intraspecific latitudinal patterns in life history are well documented, yet underlying mechanisms of such patterns are poorly understood. To advance our insights in the evolution of latitudinal differences in two key traits, growth rate and lifespan, we evaluated the potential costs of rapid growth in terms of reduced adult lifespan, and the mediatory role of oxidative stress. We studied latitudinal

    更新日期:2020-05-09
  • Temporal scale‐dependence of plant–pollinator networks
    Oikos (IF 3.37) Pub Date : 2020-05-09
    Benjamin Schwarz; Diego P. Vázquez; Paul J. CaraDonna; Tiffany M. Knight; Gita Benadi; Carsten F. Dormann; Benoit Gauzens; Elena Motivans; Julian Resasco; Nico Blüthgen; Laura A. Burkle; Qiang Fang; Christopher N. Kaiser‐Bunbury; Ruben Alarcón; Justin A. Bain; Natacha P. Chacoff; Shuang‐Quan Huang; Gretchen LeBuhn; Molly MacLeod; Theodora Petanidou; Claus Rasmussen; Michael P. Simanonok; Amibeth H

    The study of mutualistic interaction networks has led to valuable insights into ecological and evolutionary processes. However, our understanding of network structure may depend upon the temporal scale at which we sample and analyze network data. To date, we lack a comprehensive assessment of the temporal scale‐dependence of network structure across a wide range of temporal scales and geographic locations

    更新日期:2020-05-09
  • Functional and phylogenetic diversity explain different components of diversity effects on biomass production
    Oikos (IF 3.37) Pub Date : 2020-05-08
    Mengjiao Huang; Xiang Liu; Marc W. Cadotte; Shurong Zhou

    The Anthropocene is defined by human‐driven environmental change, with one consequence being the modern dramatic decline in biodiversity globally. This is especially worrisome given the long‐acknowledged causal linkage between biodiversity and ecosystem functioning and the delivery of ecosystem services. However, the exact mechanisms driving biodiversity–ecosystem function (BEF) relationships remain

    更新日期:2020-05-08
  • A tradeoff between fitness‐related traits mask facilitation in a semiarid ecosystem
    Oikos (IF 3.37) Pub Date : 2020-05-08
    Marco A. Molina‐Montenegro; Mariela Baldelomar; Cristian Atala; Cristian Torres‐Díaz

    In stressful environments, a nurse plant can ameliorate harsh biotic and abiotic conditions for another plant species that grows within its canopy. This canopy can act as a barrier for herbivores, reducing damage to the protected plants inside, but it can also reduce access to pollinators possibly resulting in a tradeoff between survival and reproductive output. In a semi‐arid ecosystem, the shrub

    更新日期:2020-05-08
  • Trophic niche size and overlap decreases with increasing ecosystem productivity
    Oikos (IF 3.37) Pub Date : 2020-05-03
    Justin S. Lesser; W. Ryan James; Christopher D. Stallings; Rachel M. Wilson; James A. Nelson

    The production and transfer of biomass through trophic relationships is a core ecosystem function. The movement of energy through the food web is mediated by organisms operating in their niche space. For generalists, the size of this niche space is inherently plastic and changes in response to available food sources. Therefore, this relationship between ecosystem productivity and niche size is an important

    更新日期:2020-05-03
  • A multilayer network in an herbaceous tropical community reveals multiple roles of floral visitors
    Oikos (IF 3.37) Pub Date : 2020-04-29
    Geiza de Oliveira Lima; Ana Virgínia Leite; Camila Silveira Souza; Cibele Cardoso Castro; Elisangela Lucia de Santana Bezerra

    Flower visitation does not necessarily mean pollination. In this sense, floral visitors can either act as mutualists (pollinators) or antagonists (floral robbers/thieves), indicating that these interactions are part of a continuum and that a visitor species can present multiple behaviours. We included both mutualistic and antagonistic interactions between plants and floral visitors in a multilayer

    更新日期:2020-04-29
  • Resource dispersion and relatedness interact to explain space use in a solitary predator
    Oikos (IF 3.37) Pub Date : 2020-04-29
    Malin Aronsson; Mikael Åkesson; Matthew Low; Jens Persson; Henrik Andrén

    Resource dispersion or kin selection are commonly used to explain animal spatial and social organization. Despite this, studies examining how these factors interact in wild populations of solitary animals are rare. We used 16 years of individual‐level spatial and genetic data to disentangle how resources and relatedness influence spatial organization of a solitary predator, the Eurasian lynx Lynx lynx

    更新日期:2020-04-29
  • Interactions between winter and summer herbivory affect spatial and temporal plant nutrient dynamics in tundra grassland communities
    Oikos (IF 3.37) Pub Date : 2020-04-27
    Matteo Petit Bon; Katarina Gunnarsdotter Inga; Ingibjörg Svala Jónsdóttir; Tove Aagnes Utsi; Eeva Marjatta Soininen; Kari Anne Bråthen

    In the long‐term, herbivores can alter nutrient dynamics in terrestrial ecosystems by changing the functional composition of plant communities. Here, we ask to what extent herbivores can affect plant‐community nutrient dynamics in the short‐term. We provide theoretical expectations for immediate effects of herbivores on tundra‐grassland plant‐community nutrient levels throughout a single growing season

    更新日期:2020-04-27
  • Modelling the consequence of glacier retreat on mixotrophic nanoflagellate bacterivory: a Bayesian approach
    Oikos (IF 3.37) Pub Date : 2020-04-27
    Luca Schenone; Esteban G. Balseiro; Marcela Bastidas Navarro; Beatriz E. Modenutti

    Mixotrophic nanoflagellate bacterivory is affected by light; however, in glacially influenced lakes, glacial clay may also interfere with prey uptake. Mechanistic models based on prior quantitative hypotheses and tested with field data are useful for predicting these predator–prey interactions under a changing climate. We modelled the effect of glacial particles on the bacterivory of mixotrophic nanoflagellates

    更新日期:2020-04-27
  • Plant–soil feedback contributes to predicting plant invasiveness of 68 alien plant species differing in invasive status
    Oikos (IF 3.37) Pub Date : 2020-04-27
    Anna Aldorfová; Pavlína Knobová; Zuzana Münzbergová

    Understanding what species characteristics allow some alien plants to become invasive while others fail is critical to our understanding of community assembly processes. While many characteristics have been shown to predict plant invasiveness, the importance of plant–soil feedback (PSF) in invasions has been difficult to assess since individual studies include only a few species and use disparate methodology

    更新日期:2020-04-27
  • Explaining prevalence, diversity and host specificity in a community of avian haemosporidian parasites
    Oikos (IF 3.37) Pub Date : 2020-04-27
    Vincenzo A. Ellis; Xi Huang; Helena Westerdahl; Jane Jönsson; Dennis Hasselquist; Júlio M. Neto; Jan‐Åke Nilsson; Johan Nilsson; Arne Hegemann; Olof Hellgren; Staffan Bensch

    Many hypotheses attempt to explain parasite–host associations, but rarely are they examined together in a single community. For hosts, key traits are the proportion of infected individuals (prevalence) and the diversity of parasites infecting them. A key parasite trait is host specificity, ranging from specialists infecting one or a few closely related species to generalists infecting many species

    更新日期:2020-04-27
  • Phenotypic plasticity and community composition interactively shape trophic interactions
    Oikos (IF 3.37) Pub Date : 2020-04-26
    Denon Start

    Trait variation defines and underpins biodiversity, yet we are only beginning to understand how processes acting across biological scales (individuals to whole communities) interact to produce trait differences and their consequences, particularly over short time scales. First, species often differ widely in their mean phenotype, meaning that changes in community composition can alter average trait

    更新日期:2020-04-26
  • Sexual size dimorphism is associated with reproductive life history trait differentiation in coexisting sepsid flies
    Oikos (IF 3.37) Pub Date : 2020-04-16
    Wolf U. Blanckenhorn; Julian Baur; Juan Pablo Busso; Athene Giesen; Natalia Gourgoulianni; Nicola van Koppenhagen; Jeannine Roy; Martin A. Schäfer; Alexandra Wegmann; Patrick T. Rohner

    Organismal life histories evolve as syndromes, resulting in correlated evolutionary differentiation of key traits that ultimately aid in discerning species. Reproductive success depends both on the absolute body size of an individual and its size relative to the opposite sex: sexual size dimorphism. In an attempt to further elucidate their coexistence and ecological diversification, we compared standard

    更新日期:2020-04-22
  • Changes in plant diversity and its relationship with productivity in response to nitrogen addition, warming and increased rainfall
    Oikos (IF 3.37) Pub Date : 2020-04-13
    Kai Yue; Scott Jarvie; Alistair M. Senior; Koenraad Van Meerbeek; Yan Peng; Xiangyin Ni; Fuzhong Wu; Jens‐Christian Svenning

    Human‐induced global changes such as nitrogen (N) deposition, climatic warming and rainfall changes have been determined to be common drivers of current plant community dynamics. However, it is unclear if and how the individual and combined effects of these drivers differently influence plant diversity and its relationship with productivity at the global scale. Here, we performed meta‐analyses with

    更新日期:2020-04-13
  • Resilience trinity: safeguarding ecosystem functioning and services across three different time horizons and decision contexts
    Oikos (IF 3.37) Pub Date : 2020-01-31
    Hanna Weise; Harald Auge; Cornelia Baessler; Ilona Bärlund; Elena M. Bennett; Uta Berger; Friedrich Bohn; Aletta Bonn; Dietrich Borchardt; Fridolin Brand; Antonis Chatzinotas; Ron Corstanje; Frederik De Laender; Peter Dietrich; Susanne Dunker; Walter Durka; Ioan Fazey; Jürgen Groeneveld; Camille S. E. Guilbaud; Hauke Harms; Stanley Harpole; Jim Harris; Kurt Jax; Florian Jeltsch; Karin Johst; Jasmin

    Ensuring ecosystem resilience is an intuitive approach to safeguard the functioning of ecosystems and hence the future provisioning of ecosystem services (ES). However, resilience is a multi‐faceted concept that is difficult to operationalize. Focusing on resilience mechanisms, such as diversity, network architectures or adaptive capacity, has recently been suggested as means to operationalize resilience

    更新日期:2020-04-01
  • Dilution effect of plant diversity on infectious diseases: latitudinal trend and biological context dependence
    Oikos (IF 3.37) Pub Date : 2020-02-04
    Xiang Liu; Lifan Chen; Mu Liu; Graciela García‐Guzmán; Gregory S. Gilbert; Shurong Zhou

    Biodiversity is thought to help regulate the impacts of disease through the dilution effect, where biodiversity among potential host species helps limit the impacts of pathogens. However, our knowledge is fragmentary about the direction and magnitude of the effects of plant species richness on disease impact. Here, we gathered data from 145 comparisons presented in 21 papers to conduct a systematic

    更新日期:2020-04-01
  • Nematode communities, plant nutrient economy and life‐cycle characteristics jointly determine plant monoculture performance over 12 years
    Oikos (IF 3.37) Pub Date : 2020-01-22
    Peter Dietrich; Anna Roeder; Simone Cesarz; Nico Eisenhauer; Anne Ebeling; Bernhard Schmid; Ernst‐Detlef Schulze; Cameron Wagg; Alexandra Weigelt; Christiane Roscher

    Knowledge from agriculture and ecological field studies suggests that plant monocultures lose productivity over time, but the drivers underlying the long‐term performance of monocultures of grassland species are not completely understood. We examined the performance of 60 grassland species growing in monoculture for 12 years in a biodiversity experiment (Jena Experiment) and studied three groups of

    更新日期:2020-04-01
  • Multiple traits and multifarious environments: integrated divergence of morphology and life history
    Oikos (IF 3.37) Pub Date : 2019-12-26
    Rüdiger Riesch; Ryan A. Martin; R. Brian Langerhans

    Understanding complex responses of multiple character suites (e.g. behaviour, life history, morphology) across multifarious environments is a challenging task. Here we use a multivariate approach (partial least squares structural equation modelling) to disentangle environmental drivers (i.e. predation, resource availability and population demographics) of population divergence in life history and morphology

    更新日期:2020-04-01
  • Can the intermediate disturbance hypothesis explain grazing–diversity relations at a global scale?
    Oikos (IF 3.37) Pub Date : 2020-01-22
    Junjing Gao; Yohay Carmel

    In the context of grazing, the intermediate disturbance hypothesis (IDH) predicts that plant diversity peaks under moderate grazing, resulting in a hump‐shape pattern for the grazing–diversity relationship. Although this has been debated due to contradictory empirical results, the IDH is still widely accepted among rangeland ecologists. The Milchunas–Sala–Lauenroth (MSL) model predicts that in arid

    更新日期:2020-04-01
  • No such thing as a free lunch: interaction costs and the structure and stability of mutualistic networks
    Oikos (IF 3.37) Pub Date : 2020-01-22
    Guadalupe Peralta; Daniel B. Stouffer; Eduardo M. Bringa; Diego P. Vázquez

    Different modelling approaches have been used to relate the structure of mutualistic interactions with the stability of communities. However, inconsistencies arise when we compare modelling outcomes with the patterns of interactions observed in empirical studies. To shed light on these inconsistencies, we explored the network structure–stability relationship by incorporating the cost of mutualistic

    更新日期:2020-04-01
  • Where to spend the winter? The role of intraspecific competition and climate in determining the selection of wintering areas by migratory caribou
    Oikos (IF 3.37) Pub Date : 2020-01-22
    Mael Le Corre; Christian Dussault; Steeve D. Côté

    Depicted as predictable movements, migrations can, however, show important interannual variations, making the conservation of migratory species particularly challenging. Plasticity in migratory behaviour allows individuals to adjust their migratory tactics to maximize their fitness. Destination of migration, and therefore migration patterns, may vary according to climatic and environmental conditions

    更新日期:2020-04-01
  • Population fragmentation drives up genetic diversity in signals of individual identity
    Oikos (IF 3.37) Pub Date : 2020-01-22
    Calvin Dytham; Michael D. F. Thom

    Many species advertise their unique identity to conspecifics using dedicated individuality signals: one familiar example is human faces. But how unique in the global population do these signals need to be? While human faces are highly variable, each person interacts with many fewer individuals than are found in the total population. This raises the question of how evolutionary mechanisms drive up population‐wide

    更新日期:2020-04-01
  • Plant–microbial interactions facilitate grassland species coexistence at the community level
    Oikos (IF 3.37) Pub Date : 2020-01-22
    Jiahuan Li; Shu Xie; Gail W. T. Wilson; Adam B. Cobb; Shiming Tang; Lizhu Guo; Kun Wang; Bo Deng

    Interspecific competition and plant–soil feedbacks are powerful drivers of plant community structure. However, across a range of edaphic conditions the interactive effects of these drivers on complex plant communities remain unclear. For example, plant–soil feedback studies focus on soil trained by a single plant species. We developed a method to assess effects of plant–microbial interactions (PMI)

    更新日期:2020-04-01
  • Seedling traits from root to shoot exhibit genetic diversity and distinct responses to environmental heterogeneity within a tree population
    Oikos (IF 3.37) Pub Date : 2020-01-27
    Matti J. Salmela; Sannakajsa M. Velmala; Taina Pennanen

    Phenotypic diversity within plant species is crucial to shaping evolutionary responses of populations and interactions among species, yet intraspecific genetic variability notably in roots has attracted little attention. Further, evidence for the root–shoot trait synchronisation remains inconclusive, narrowing our understanding of the role that belowground traits play in local adaptation. We applied

    更新日期:2020-04-01
  • Testing the effect of quantitative genetic inheritance in structured models on projections of population dynamics
    Oikos (IF 3.37) Pub Date : 2020-01-27
    Emily G. Simmonds; Ella F. Cole; Ben C. Sheldon; Tim Coulson

    Global climate change is altering the timing of life history events for species living in seasonal environments. These shifts in phenology can lead to the disruption of interspecific relationships with implications for individual fitness. Predicting phenological change and its population level consequences can provide insights into population persistence. Achieving this is challenging for labile traits

    更新日期:2020-04-01
  • Water restriction induces behavioral fight but impairs thermoregulation in a dry‐skinned ectotherm
    Oikos (IF 3.37) Pub Date : 2020-01-27
    David Rozen‐Rechels; Arnaud Badiane; Simon Agostini; Sandrine Meylan; Jean‐François Le Galliard

    Behavioral fight responses to desiccation risk are important to predict the vulnerability of terrestrial animals to climate change and yet, they have received little attention so far. In terrestrial ectotherms, behavioral regulation of the water balance (i.e. hydroregulation) is likely to be plastic and may tradeoff with thermoregulation behavior because water loss rates are generally higher in warmer

    更新日期:2020-04-01
  • The cryptic impacts of invasion: functional homogenization of tropical ant communities by invasive fire ants
    Oikos (IF 3.37) Pub Date : 2020-01-22
    Mark K. L. Wong; Benoit Guénard; Owen T. Lewis

    The diversity and distribution of traits in an ecological community shapes its responses to change and the ecosystem processes it modulates. This ‘functional diversity’, however, is not necessarily a direct outcome of taxonomic diversity. Invasions by exotic insects occur in ecosystems worldwide, but there is limited understanding of how they impact functional diversity. We present the first comprehensive

    更新日期:2020-04-01
  • Species‐specific root proliferation of tree seedlings in tropical litter: do nutrients matter?
    Oikos (IF 3.37) Pub Date : 2020-01-22
    Tushar C. Sarker; Giulia Maisto; Anna De Marco; Valeria Memoli; Speranza C. Panico; Riccardo Motti; Mohamed Idbella; Guido Incerti; Stefano Mazzoleni; Giuliano Bonanomi

    Litter decomposition mobilizes nutrients that sustain ecosystem productivity, but decomposition by‐products may also hamper root proliferation by phytotoxicity. The aim of this study was to assess the litter substrate preferences of tropical tree seedlings in relation to litter chemical traits.

    更新日期:2020-04-01
  • Environmental cues for dispersal in a filamentous fungus in simulated islands
    Oikos (IF 3.37) Pub Date : 2020-03-23
    Justin Y. Chan; Stephen P. Bonser; Jeff R. Powell; William K. Cornwell

    Airborne dispersal is a key part of the life history of many saprotrophic fungi. Theory suggests a transition from growth and resource capture to airborne dispersal at some point as the resource availability in a patch declines, but in the absence of an experimental model system this theory has not been empirically tested. For saprobes, resources are arrayed in an ever‐shifting archipelago of islands

    更新日期:2020-03-23
  • Consistent individual differences in ecto‐parasitism of a long‐lived lizard host
    Oikos (IF 3.37) Pub Date : 2020-03-23
    Eric Payne; David L. Sinn; Orr Spiegel; Stephan T. Leu; Caroline Wohlfeil; Stephanie S. Godfrey; Michael Gardner; Andy Sih

    Individual hosts vary substantially in their parasite loads. However, whether individual hosts have consistently different loads remains uncertain. If so, hosts that have consistently high parasite loads may serve as key reservoirs or super‐spreaders. Thus, identifying whether individuals persistently differ in their parasitism and the factors that explain these patterns constitute important issues

    更新日期:2020-03-23
  • Phenological responses to climate warming in temperate moths and butterflies: species traits predict future changes in voltinism
    Oikos (IF 3.37) Pub Date : 2020-03-23
    Tiit Teder

    Changes in the number of generations per year (voltinism) have been among the most common phenological responses to climate warming in insects inhabiting seasonal environments. Nevertheless, numerous species have maintained univoltine (one generation per year) phenology with increasing temperatures, indicating the involvement of phylogenetic, ecological or some other constraints on phenological change

    更新日期:2020-03-23
  • Scale‐dependent effects of conspecific negative density dependence and immigration on biodiversity maintenance
    Oikos (IF 3.37) Pub Date : 2020-03-23
    Felix May; Thorsten Wiegand; Andreas Huth; Jonathan M. Chase

    Conspecific negative density dependence (CNDD) has been highlighted as a main driver of biodiversity maintenance. However, while there is general consensus on the scale‐dependent and interacting nature of ecological processes, there is limited knowledge about the relative importance of CNDD across spatial scales and on its interaction with other processes, such as dispersal and immigration. While many

    更新日期:2020-03-23
  • Support for the climatic variability hypothesis depends on the type of thermal plasticity: lessons from predation rates
    Oikos (IF 3.37) Pub Date : 2020-03-23
    Ying‐Jie Wang; Robby Stoks; Arnaud Sentis; Nedim Tüzün

    Plastic and evolutionary changes in traits related to biotic interactions are crucial for the local persistence of populations under global warming. Yet, how acute and developmental thermal plasticity evolve and shape predation rates has been poorly studied, especially in the context of latitude‐driven thermal evolution. A powerful predictive framework is given by the climatic variability hypothesis

    更新日期:2020-03-23
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