51
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Sanchez-Martinez P, Martínez-Vilalta J, Dexter KG, Segovia RA, Mencuccini M. Adaptation and coordinated evolution of plant hydraulic traits. Ecol Lett 2020; 23:1599-1610. [PMID: 32808458 DOI: 10.1111/ele.13584] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/21/2020] [Accepted: 07/07/2020] [Indexed: 12/30/2022]
Abstract
Hydraulic properties control plant responses to climate and are likely to be under strong selective pressure, but their macro-evolutionary history remains poorly characterised. To fill this gap, we compiled a global dataset of hydraulic traits describing xylem conductivity (Ks ), xylem resistance to embolism (P50), sapwood allocation relative to leaf area (Hv) and drought exposure (ψmin ), and matched it with global seed plant phylogenies. Individually, these traits present medium to high levels of phylogenetic signal, partly related to environmental selective pressures shaping lineage evolution. Most of these traits evolved independently of each other, being co-selected by the same environmental pressures. However, the evolutionary correlations between P50 and ψmin and between Ks and Hv show signs of deeper evolutionary integration because of functional, developmental or genetic constraints, conforming to evolutionary modules. We do not detect evolutionary integration between conductivity and resistance to embolism, rejecting a hardwired trade-off for this pair of traits.
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Affiliation(s)
- Pablo Sanchez-Martinez
- CREAF, Cerdanyola del Valles, Barcelona, 08193, Spain.,Universitat Autònoma de Barcelona, Cerdanyola del Valles, Barcelona, 08193, Spain
| | - Jordi Martínez-Vilalta
- CREAF, Cerdanyola del Valles, Barcelona, 08193, Spain.,Universitat Autònoma de Barcelona, Cerdanyola del Valles, Barcelona, 08193, Spain
| | - Kyle G Dexter
- School of GeoSciences, University of Edinburgh, Edinburgh, UK.,Royal Botanic Garden Edinburgh, Edinburgh, UK
| | - Ricardo A Segovia
- School of GeoSciences, University of Edinburgh, Edinburgh, UK.,Instituto de Ecología y Biodiversidad, Santiago, Chile
| | - Maurizio Mencuccini
- CREAF, Cerdanyola del Valles, Barcelona, 08193, Spain.,ICREA, Pg. Lluís Companys 23, Barcelona, 08010, Spain
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52
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Abstract
AbstractChaetothyriales is an ascomycetous order within Eurotiomycetes. The order is particularly known through the black yeasts and filamentous relatives that cause opportunistic infections in humans. All species in the order are consistently melanized. Ecology and habitats of species are highly diverse, and often rather extreme in terms of exposition and toxicity. Families are defined on the basis of evolutionary history, which is reconstructed by time of divergence and concepts of comparative biology using stochastical character mapping and a multi-rate Brownian motion model to reconstruct ecological ancestral character states. Ancestry is hypothesized to be with a rock-inhabiting life style. Ecological disparity increased significantly in late Jurassic, probably due to expansion of cytochromes followed by colonization of vacant ecospaces. Dramatic diversification took place subsequently, but at a low level of innovation resulting in strong niche conservatism for extant taxa. Families are ecologically different in degrees of specialization. One of the clades has adapted ant domatia, which are rich in hydrocarbons. In derived families, similar processes have enabled survival in domesticated environments rich in creosote and toxic hydrocarbons, and this ability might also explain the pronounced infectious ability of vertebrate hosts observed in these families. Conventional systems of morphological classification poorly correspond with recent phylogenetic data. Species are hypothesized to have low competitive ability against neighboring microbes, which interferes with their laboratory isolation on routine media. The dataset is unbalanced in that a large part of the extant biodiversity has not been analyzed by molecular methods, novel taxonomic entities being introduced at a regular pace. Our study comprises all available species sequenced to date for LSU and ITS, and a nomenclatural overview is provided. A limited number of species could not be assigned to any extant family.
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53
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Starko S, Demes KW, Neufeld CJ, Martone PT. Convergent evolution of niche structure in Northeast Pacific kelp forests. Funct Ecol 2020. [DOI: 10.1111/1365-2435.13621] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Samuel Starko
- Department of Botany & Biodiversity Research Centre University of British Columbia Vancouver BC Canada
- Department of Biology University of Victoria Victoria BC Canada
- Bamfield Marine Sciences Centre Bamfield BC Canada
| | - Kyle W. Demes
- Institutional Strategic Awards Simon Fraser University Burnaby BC Canada
| | | | - Patrick T. Martone
- Department of Botany & Biodiversity Research Centre University of British Columbia Vancouver BC Canada
- Bamfield Marine Sciences Centre Bamfield BC Canada
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54
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Chaloner TM, Gurr SJ, Bebber DP. Geometry and evolution of the ecological niche in plant-associated microbes. Nat Commun 2020; 11:2955. [PMID: 32528123 PMCID: PMC7289842 DOI: 10.1038/s41467-020-16778-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 05/21/2020] [Indexed: 12/17/2022] Open
Abstract
The ecological niche can be thought of as a volume in multidimensional space, where each dimension describes an abiotic condition or biotic resource required by a species. The shape, size, and evolution of this volume strongly determine interactions among species and influence their current and potential geographical distributions, but the geometry of niches is poorly understood. Here, we analyse temperature response functions and host plant ranges for hundreds of potentially destructive plant-associated fungi and oomycetes. We demonstrate that niche specialization is uncorrelated on abiotic (i.e. temperature response) and biotic (i.e. host range) axes, that host interactions restrict fundamental niche breadth to form the realized niche, and that both abiotic and biotic niches show limited phylogenetic constraint. The ecological terms ‘generalist’ and ‘specialist’ therefore do not apply to these microbes, as specialization evolves independently on different niche axes. This adaptability makes plant pathogens a formidable threat to agriculture and forestry. The ecological niche of host-associated microbes is defined by both abiotic and biotic dimensions. Here the authors analyse published data on fungal and oomycete pathogens of plants, demonstrating that specialization can evolve independently on abiotic and biotic axes and that interactions with host plants reduce thermal niche breadth.
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Affiliation(s)
- Thomas M Chaloner
- Department of Biosciences, University of Exeter, Exeter, EX4 4QJ, UK
| | - Sarah J Gurr
- Department of Biosciences, University of Exeter, Exeter, EX4 4QJ, UK.,Department of Biosciences, Utrecht University, Paduallaan, 8, Netherlands
| | - Daniel P Bebber
- Department of Biosciences, University of Exeter, Exeter, EX4 4QJ, UK.
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55
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Pérez F, Lavandero N, Ossa CG, Hinojosa LF, Jara-Arancio P, Arroyo MTK. Divergence in Plant Traits and Increased Modularity Underlie Repeated Transitions Between Low and High Elevations in the Andean Genus Leucheria. FRONTIERS IN PLANT SCIENCE 2020; 11:714. [PMID: 32582248 PMCID: PMC7287153 DOI: 10.3389/fpls.2020.00714] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Accepted: 05/06/2020] [Indexed: 06/11/2023]
Abstract
Understanding why some plant lineages move from one climatic region to another is a mayor goal of evolutionary biology. In the southern Andes plant lineages that have migrated along mountain ranges tracking cold-humid climates coexist with lineages that have shifted repeatedly between warm-arid at low elevations and cold habitats at high elevations. Transitions between habitats might be facilitated by the acquisition of common traits favoring a resource-conservative strategy that copes with drought resulting from either low precipitation or extreme cold. Alternatively, transitions might be accompanied by phenotypic divergence and accelerated evolution of plant traits, which in turn may depend on the level of coordination among them. Reduced integration and evolution of traits in modules are expected to increase evolutionary rates of traits, allowing diversification in contrasting climates. To examine these hypotheses, we conducted a comparative study in the herbaceous genus Leucheria. We reconstructed ancestral habitat states using Maximum Likelihood and a previously published phylogeny. We performed a Phylogenetic Principal Components Analysis on traits, and then we tested the relationship between PC axes, habitat and climate using Phylogenetic Generalized Least Squares (PGLS). Finally, we compared the evolutionary rates of traits, and the levels of modularity among the three main Clades of Leucheria. Our results suggest that the genus originated at high elevations and later repeatedly colonized arid-semiarid shrublands and humid-forest at lower elevations. PGLS analysis suggested that transitions between habitats were accompanied by shifts in plant strategies: cold habitats at high elevations favored the evolution of traits related to a conservative-resource strategy (thicker and dissected leaves, with high mass per area, and high biomass allocation to roots), whereas warm-arid habitats at lower elevations favored traits related to an acquisitive-resource strategy. As expected, we detected higher levels of modularity in the clades that switched repeatedly between habitats, but higher modularity was not associated with accelerated rates of trait evolution.
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Affiliation(s)
- Fernanda Pérez
- Departamento de Ecología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
- Instituto de Ecología y Biodiversidad, Santiago, Chile
| | - Nicolás Lavandero
- Departamento de Ecología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Carmen Gloria Ossa
- Departamento de Ecología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
- Instituto de Biología, Facultad de Ciencias, Universidad de Valparaíso, Santiago, Chile
| | - Luis Felipe Hinojosa
- Instituto de Ecología y Biodiversidad, Santiago, Chile
- Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Santiago, Chile
| | - Paola Jara-Arancio
- Instituto de Ecología y Biodiversidad, Santiago, Chile
- Departamento de Ciencias Biológicas y Departamento de Ecología y Biodiversidad, Facultad de Ciencias para la Vida, Universidad Andrés Bello, Santiago, Chile
| | - Mary T. Kalin Arroyo
- Instituto de Ecología y Biodiversidad, Santiago, Chile
- Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Santiago, Chile
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56
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Li Y, Reich PB, Schmid B, Shrestha N, Feng X, Lyu T, Maitner BS, Xu X, Li Y, Zou D, Tan Z, Su X, Tang Z, Guo Q, Feng X, Enquist BJ, Wang Z. Leaf size of woody dicots predicts ecosystem primary productivity. Ecol Lett 2020; 23:1003-1013. [PMID: 32249502 PMCID: PMC7384143 DOI: 10.1111/ele.13503] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 01/20/2020] [Accepted: 02/03/2020] [Indexed: 02/07/2023]
Abstract
A key challenge in ecology is to understand the relationships between organismal traits and ecosystem processes. Here, with a novel dataset of leaf length and width for 10 480 woody dicots in China and 2374 in North America, we show that the variation in community mean leaf size is highly correlated with the variation in climate and ecosystem primary productivity, independent of plant life form. These relationships likely reflect how natural selection modifies leaf size across varying climates in conjunction with how climate influences canopy total leaf area. We find that the leaf size-primary productivity functions based on the Chinese dataset can predict productivity in North America and vice-versa. In addition to advancing understanding of the relationship between a climate-driven trait and ecosystem functioning, our findings suggest that leaf size can also be a promising tool in palaeoecology for scaling from fossil leaves to palaeo-primary productivity of woody ecosystems.
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Affiliation(s)
- Yaoqi Li
- Institute of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of EducationCollege of Urban and Environmental SciencesPeking UniversityBeijing100871China
| | - Peter B. Reich
- Department of Forest ResourcesUniversity of MinnesotaSt. PaulMN55108USA
- Hawkesbury Institute for the EnvironmentWestern Sydney UniversityPenrithNSW2751Australia
| | - Bernhard Schmid
- Department of GeographyRemote Sensing LaboratoriesUniversity of ZurichWinterthurerstrasse 1908057ZurichSwitzerland
| | - Nawal Shrestha
- Institute of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of EducationCollege of Urban and Environmental SciencesPeking UniversityBeijing100871China
- Institute of Innovation EcologyLanzhou UniversityLanzhou730000China
| | - Xiao Feng
- Institute of the EnvironmentUniversity of ArizonaTucsonArizona85721USA
| | - Tong Lyu
- Institute of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of EducationCollege of Urban and Environmental SciencesPeking UniversityBeijing100871China
| | - Brian S. Maitner
- Department of Ecology and Evolutionary BiologyUniversity of ArizonaTucsonAZ85721USA
| | - Xiaoting Xu
- Institute of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of EducationCollege of Urban and Environmental SciencesPeking UniversityBeijing100871China
- Key Laboratory of Bio‐Resource and Eco‐Environment of Ministry of EducationCollege of Life SciencesSichuan UniversityChengdu610065SichuanChina
| | - Yichao Li
- Institute of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of EducationCollege of Urban and Environmental SciencesPeking UniversityBeijing100871China
| | - Dongting Zou
- Institute of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of EducationCollege of Urban and Environmental SciencesPeking UniversityBeijing100871China
| | - Zheng‐Hong Tan
- College of Environment and EcologyHainan UniversityHaikouHainan570228China
| | - Xiangyan Su
- Institute of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of EducationCollege of Urban and Environmental SciencesPeking UniversityBeijing100871China
| | - Zhiyao Tang
- Institute of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of EducationCollege of Urban and Environmental SciencesPeking UniversityBeijing100871China
| | - Qinghua Guo
- State Key Laboratory of Vegetation and Environmental ChangeInstitute of BotanyChinese Academy of SciencesBeijing100093China
| | - Xiaojuan Feng
- State Key Laboratory of Vegetation and Environmental ChangeInstitute of BotanyChinese Academy of SciencesBeijing100093China
| | - Brian J. Enquist
- Institute of the EnvironmentUniversity of ArizonaTucsonArizona85721USA
- The Santa Fe InstituteSanta FeNM87501USA
| | - Zhiheng Wang
- Institute of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of EducationCollege of Urban and Environmental SciencesPeking UniversityBeijing100871China
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57
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Anderson PSL, Rivera MD, Suarez AV. "Simple" Biomechanical Model for Ants Reveals How Correlated Evolution among Body Segments Minimizes Variation in Center of Mass as Heads Get Larger. Integr Comp Biol 2020; 60:1193-1207. [PMID: 32386301 DOI: 10.1093/icb/icaa027] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The field of comparative biomechanics strives to understand the diversity of the biological world through the lens of physics. To accomplish this, researchers apply a variety of modeling approaches to explore the evolution of form and function ranging from basic lever models to intricate computer simulations. While advances in technology have allowed for increasing model complexity, insight can still be gained through the use of low-parameter "simple" models. All models, regardless of complexity, are simplifications of reality and must make assumptions; "simple" models just make more assumptions than complex ones. However, "simple" models have several advantages. They allow individual parameters to be isolated and tested systematically, can be made applicable to a wide range of organisms and make good starting points for comparative studies, allowing for complexity to be added as needed. To illustrate these ideas, we perform a case study on body form and center of mass stability in ants. Ants show a wide diversity of body forms, particularly in terms of the relative size of the head, petiole(s), and gaster (the latter two make-up the segments of the abdomen not fused to thorax in hymenopterans). We use a "simple" model to explore whether balance issues pertaining to the center of mass influence patterns of segment expansion across major ant clades. Results from phylogenetic comparative methods imply that the location of the center of mass in an ant's body is under stabilizing selection, constraining the center of mass to the middle segment (thorax) over the legs. This is potentially maintained by correlated rates of evolution between the head and gaster on either end. While these patterns arise from a model that makes several assumptions/simplifications relating to shape and materials, they still offer intriguing insights into the body plan of ants across ∼68% of their diversity. The results from our case study illustrate how "simple," low-parameter models both highlight fundamental biomechanical trends and aid in crystalizing specific questions and hypotheses for more complex models to address.
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Affiliation(s)
- Philip S L Anderson
- Department of Evolution, Ecology and Behavior, University of Illinois, Urbana-Champaign, IL, USA.,Program in Ecology, Evolution, and Conservation Biology, University of Illinois, Urbana-Champaign, IL, USA.,Beckman Institute for Science and Technology, University of Illinois, Urbana-Champaign, IL, USA
| | - Michael D Rivera
- Program in Ecology, Evolution, and Conservation Biology, University of Illinois, Urbana-Champaign, IL, USA
| | - Andrew V Suarez
- Department of Evolution, Ecology and Behavior, University of Illinois, Urbana-Champaign, IL, USA.,Program in Ecology, Evolution, and Conservation Biology, University of Illinois, Urbana-Champaign, IL, USA.,Beckman Institute for Science and Technology, University of Illinois, Urbana-Champaign, IL, USA.,Department of Entomology, University of Illinois, Urbana-Champaign, IL, USA
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58
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Barros MJF, Silva-Arias GA, Segatto ALA, Reck-Kortmann M, Fregonezi JN, Diniz-Filho JAF, Freitas LB. Phylogenetic niche conservatism and plant diversification in South American subtropical grasslands along multiple climatic dimensions. Genet Mol Biol 2020; 43:e20180291. [PMID: 32353100 PMCID: PMC7197982 DOI: 10.1590/1678-4685-gmb-2018-0291] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 07/31/2019] [Indexed: 11/22/2022] Open
Abstract
Phylogenetic niche conservatism can be investigated at multiple scales on an explicit geographical context. Haplotype-based comparative analyses of lineages occupying the same region, and thus subjected to similar environmental factors, allow decoupling shared evolutionary and ecological patterns, as well as multiple dimensions of adaptive diversification. Here we aimed to assess the role of environmental drivers on diversification of subtropical grassland, based on haplotypic diversity of two plant genera. We sampled two closely related and co-distributed grassland plant genera, Petunia and Calibrachoa, across their entire distribution area. Eigenvectors extracted from pairwise distances based on chloroplast DNA haplotypes were used to fit Phylogenetic Signal-Representation (PSR) curves to estimate evolutionary patterns in 19 bioclimatic variables and altitude. The PSR curves showed that altitude, precipitation, and temperature variables changed at different rates with haplotype differentiation. Altitude and temperature traits evolved under conditions closer to a neutral dynamics, whereas precipitation traits differentiated following more complex models. Our results indicated that the diversification in the two genera was more limited by precipitation conditions. Based on these novel findings, we suggest that future studies should test the possible impact of precipitation variables on the process of ecological differentiation in these genera.
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Affiliation(s)
- Michel J F Barros
- Universidade Federal do Rio Grande do Sul, Departamento de Genética, Laboratório de Evolução Molecular, Porto Alegre, RS, Brazil
| | - Gustavo A Silva-Arias
- Universidade Federal do Rio Grande do Sul, Departamento de Genética, Laboratório de Evolução Molecular, Porto Alegre, RS, Brazil
| | - Ana Lúcia Anversa Segatto
- Universidade Federal do Rio Grande do Sul, Departamento de Genética, Laboratório de Evolução Molecular, Porto Alegre, RS, Brazil
| | - Maikel Reck-Kortmann
- Universidade Federal do Rio Grande do Sul, Departamento de Genética, Laboratório de Evolução Molecular, Porto Alegre, RS, Brazil
| | - Jeferson N Fregonezi
- Universidade Federal do Rio Grande do Sul, Departamento de Genética, Laboratório de Evolução Molecular, Porto Alegre, RS, Brazil
| | | | - Loreta B Freitas
- Universidade Federal do Rio Grande do Sul, Departamento de Genética, Laboratório de Evolução Molecular, Porto Alegre, RS, Brazil
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59
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Farallo VR, Muñoz MM, Uyeda JC, Miles DB. Scaling between macro- to microscale climatic data reveals strong phylogenetic inertia in niche evolution in plethodontid salamanders. Evolution 2020; 74:979-991. [PMID: 32190909 DOI: 10.1111/evo.13959] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 11/22/2019] [Accepted: 02/11/2020] [Indexed: 12/25/2022]
Abstract
Macroclimatic niches are indirect and potentially inadequate predictors of the realized environmental conditions that many species experience. Consequently, analyses of niche evolution based on macroclimatic data alone may incompletely represent the evolutionary dynamics of species niches. Yet, understanding how an organisms' climatic (Grinnellian) niche responds to changing macroclimatic conditions is of vital importance for predicting their potential response to global change. In this study, we integrate microclimatic and macroclimatic data across 26 species of plethodontid salamanders to portray the relationship between microclimatic niche evolution in response to changing macroclimate. We demonstrate stronger phylogenetic signal in microclimatic niche variables than at the macroclimatic scale. Even so, we find that the microclimatic niche tracks climatic changes at the macroscale, but with a phylogenetic lag at million-year timescales. We hypothesize that behavioral tracking of the microclimatic niche over space and phenology generates the lag: salamanders preferentially select microclimates similar to their ancestral conditions rather than adapting with changes in physiology. We demonstrate that macroclimatic variables are weak predictors of niche evolution and that incorporating spatial scale into analyses of niche evolution is critical for predicting responses to climate change.
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Affiliation(s)
- Vincent R Farallo
- Department of Ecology and Evolutionary Biology, Yale University, 21 Sachem Street, New Haven, Connecticut, 06511.,Department of Biological Sciences, Ohio Center for Ecological and Evolutionary Studies, Ohio University, Athens, Ohio, 45701
| | - Martha M Muñoz
- Department of Ecology and Evolutionary Biology, Yale University, 21 Sachem Street, New Haven, Connecticut, 06511
| | - Josef C Uyeda
- Department of Biological Sciences, Virginia Tech, 926 West Campus Drive, Blacksburg, Virginia, 24061
| | - Donald B Miles
- Department of Biological Sciences, Ohio Center for Ecological and Evolutionary Studies, Ohio University, Athens, Ohio, 45701
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60
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Münzbergová Z, Kosová V, Schnáblová R, Rokaya M, Synková H, Haisel D, Wilhelmová N, Dostálek T. Plant Origin, but Not Phylogeny, Drive Species Ecophysiological Response to Projected Climate. FRONTIERS IN PLANT SCIENCE 2020; 11:400. [PMID: 32318088 PMCID: PMC7154175 DOI: 10.3389/fpls.2020.00400] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 03/19/2020] [Indexed: 06/11/2023]
Abstract
Knowledge of the relationship between environmental conditions and species traits is an important prerequisite for understanding determinants of community composition and predicting species response to novel climatic conditions. Despite increasing number of studies on this topic, our knowledge on importance of genetic differentiation, plasticity and their interactions along larger sets of species is still limited especially for traits related to plant ecophysiology. We studied variation in traits related to growth, leaf chemistry, contents of photosynthetic pigments and activity of antioxidative enzymes, stomata morphology and photosynthetic activity across eight Impatiens species growing along altitudinal gradients in Himalayas cultivated in three different temperature regimes and explored effects of among species phylogenetic relationships on the results. Original and target climatic conditions determine trait values in our system. The traits are either highly plastic (e.g., APX, CAT, plant size, neoxanthin, β-carotene, chlorophyll a/b, DEPSC) or are highly differentiated among populations (stomata density, lutein production). Many traits show strong among population differentiation in degree of plasticity and direction in response to environmental changes. Most traits indicate that the species will profit from the expected warming. This suggests that different processes determine the values of the different traits and separating the importance of genetic differentiation and plasticity is crucial for our ability to predict species response to future climate changes. The results also indicate that evolution of the traits is not phylogenetically constrained but including phylogenetic information into the analysis may improve our understanding of the trait-environment relationships as was apparent from the analysis of SLA.
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Affiliation(s)
- Zuzana Münzbergová
- Department of Population Ecology, Institute of Botany, Czech Academy of Sciences, Prague, Czechia
- Department of Botany, Faculty of Science, Charles University, Prague, Czechia
| | - Veronika Kosová
- Department of Botany, Faculty of Science, Charles University, Prague, Czechia
| | - Renáta Schnáblová
- Department of Population Ecology, Institute of Botany, Czech Academy of Sciences, Prague, Czechia
- Institute of Experimental Botany, Czech Academy of Sciences, Prague, Czechia
| | - Maan Rokaya
- Department of Population Ecology, Institute of Botany, Czech Academy of Sciences, Prague, Czechia
| | - Helena Synková
- Institute of Experimental Botany, Czech Academy of Sciences, Prague, Czechia
| | - Daniel Haisel
- Institute of Experimental Botany, Czech Academy of Sciences, Prague, Czechia
| | - Nada Wilhelmová
- Institute of Experimental Botany, Czech Academy of Sciences, Prague, Czechia
| | - Tomáš Dostálek
- Department of Population Ecology, Institute of Botany, Czech Academy of Sciences, Prague, Czechia
- Department of Botany, Faculty of Science, Charles University, Prague, Czechia
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61
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Verboom GA, Boucher FC, Ackerly DD, Wootton LM, Freyman WA. Species Selection Regime and Phylogenetic Tree Shape. Syst Biol 2020; 69:774-794. [DOI: 10.1093/sysbio/syz076] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 11/08/2019] [Accepted: 11/11/2019] [Indexed: 11/12/2022] Open
Abstract
Abstract
Species selection, the effect of heritable traits in generating between-lineage diversification rate differences, provides a valuable conceptual framework for understanding the relationship between traits, diversification, and phylogenetic tree shape. An important challenge, however, is that the nature of real diversification landscapes—curves or surfaces which describe the propensity of species-level lineages to diversify as a function of one or more traits—remains poorly understood. Here, we present a novel, time-stratified extension of the QuaSSE model in which speciation/extinction rate is specified as a static or temporally shifting Gaussian or skewed-Gaussian function of the diversification trait. We then use simulations to show that the generally imbalanced nature of real phylogenetic trees, as well as their generally greater than expected frequency of deep branching events, are typical outcomes when diversification is treated as a dynamic, trait-dependent process. Focusing on four basic models (Gaussian-speciation with and without background extinction; skewed-speciation; Gaussian-extinction), we also show that particular features of the species selection regime produce distinct tree shape signatures and that, consequently, a combination of tree shape metrics has the potential to reveal the species selection regime under which a particular lineage diversified. We evaluate this idea empirically by comparing the phylogenetic trees of plant lineages diversifying within climatically and geologically stable environments of the Greater Cape Floristic Region, with those of lineages diversifying in environments that have experienced major change through the Late Miocene-Pliocene. Consistent with our expectations, the trees of lineages diversifying in a dynamic context are less balanced, show a greater concentration of branching events close to the present, and display stronger diversification rate-trait correlations. We suggest that species selection plays an important role in shaping phylogenetic trees but recognize the need for an explicit probabilistic framework within which to assess the likelihoods of alternative diversification scenarios as explanations of a particular tree shape. [Cape flora; diversification landscape; environmental change; gamma statistic; species selection; time-stratified QuaSSE model; trait-dependent diversification; tree imbalance.]
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Affiliation(s)
- G Anthony Verboom
- Bolus Herbarium and Department of Biological Sciences, University of Cape Town, Private Bag, Rondebosch 7700, South Africa
| | - Florian C Boucher
- Department of Botany and Zoology, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
- Université Grenoble Alpes, CNRS, Laboratoire d’Ecologie Alpine (LECA), 2233 Rue de la Piscine, FR-38000 Grenoble, France
| | - David D Ackerly
- Department of Integrative Biology, University of California, Berkeley, CA 94720, USA
- Department of Environmental Sciences, Policy, and Management, University of California, Berkeley, CA 94720, USA
| | - Lara M Wootton
- Bolus Herbarium and Department of Biological Sciences, University of Cape Town, Private Bag, Rondebosch 7700, South Africa
| | - William A Freyman
- Department of Integrative Biology, University of California, Berkeley, CA 94720, USA
- Department of Ecology, Evolution and Behavior, University of Minnesota, Saint Paul, MN 55108, USA
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Nagahama A, Yahara T. Quantitative comparison of flowering phenology traits among trees, perennial herbs, and annuals in a temperate plant community. AMERICAN JOURNAL OF BOTANY 2019; 106:1545-1557. [PMID: 31724169 PMCID: PMC6973048 DOI: 10.1002/ajb2.1387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Accepted: 09/30/2019] [Indexed: 06/10/2023]
Abstract
PREMISE Flowering phenology may differ among life forms due to the costs and benefits to attract pollinators, dependence on outcross pollination, and resource availability in their habitats. However, few studies have compared flowering phenology among life forms within a community and described flowering phenology at the individual, species, and community levels. METHODS We recorded flowering events for individuals of insect-pollinated trees, perennial herbs, and annuals from spring to summer of 2016 and 2017 in a warm-temperate forest in Japan. To compare phenological variables including mean and variance of flowering length, we standardized the number of observed individuals for each species and tested differences in variables, considering the phylogenetic relationships among species. RESULTS Total flowering length in trees (9-50 d) was significantly shorter than perennial herbs (27-113 d) or annuals (22-89 d), but mean flowering length was not significantly different among them. Flowering length variance was significantly smaller and intraspecies synchrony significantly higher in trees than in perennial herbs and annuals. At the community level, flowering times largely overlapped among successively flowering species, but interspecies synchrony was positive for all life forms. CONCLUSIONS Shorter total flowering length and higher intraspecific synchrony in trees are explained by a modified pollinator attraction hypothesis suggesting that selection favors higher intraspecific synchrony because it promotes between-individual movement of pollinators. At the community level, positive interspecific synchrony for all life forms supports the hypothesis that flowering times tend to converge among species.
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Affiliation(s)
- Ai Nagahama
- Graduate School of Systems Life SciencesKyushu UniversityFukuoka819‐0395Japan
| | - Tetsukazu Yahara
- Graduate School of Systems Life SciencesKyushu UniversityFukuoka819‐0395Japan
- Kyushu Open UniversityFukuoka819-0395Japan
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63
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Campos FS, Lourenço-De-Moraes R, Rudoy A, Rödder D, Llorente GA, Solé M. Ecological trait evolution in amphibian phylogenetic relationships. ETHOL ECOL EVOL 2019. [DOI: 10.1080/03949370.2019.1630012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Felipe S. Campos
- Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Universitat de Barcelona, Barcelona 08028, Spain
- NOVA Information Management School (NOVA IMS), Universidade Nova de Lisboa, Lisboa 1070-312, Portugal
| | - Ricardo Lourenço-De-Moraes
- Programa de Pós-graduação em Ecologia de Ambientes Aquáticos Continentais, Universidade Estadual de Maringá, Maringá 87020-900, Brazil
| | - Andrey Rudoy
- Institut de Biologia Evolutiva (CSIC-UPF), Barcelona 08003, Spain
| | - Dennis Rödder
- Herpetology Section, Zoologisches Forschungsmuseum Alexander Koenig (ZFMK), Bonn 53113, Germany
| | - Gustavo A. Llorente
- Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Universitat de Barcelona, Barcelona 08028, Spain
| | - Mirco Solé
- Herpetology Section, Zoologisches Forschungsmuseum Alexander Koenig (ZFMK), Bonn 53113, Germany
- Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus 45662-000, Brazil
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64
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Teixido AL, Valladares F. Heat and drought determine flower female allocation in a hermaphroditic Mediterranean plant family. PLANT BIOLOGY (STUTTGART, GERMANY) 2019; 21:1024-1030. [PMID: 31282088 DOI: 10.1111/plb.13031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 07/03/2019] [Indexed: 06/09/2023]
Abstract
In animal-pollinated hermaphroditic species, larger and xenogamous flowers increase male-biased resource allocation, whereas smaller and selfing flowers invest disproportionally more resources to female function. In Cistaceae, an entomophilous and hermaphroditic Mediterranean family, this pattern generally follows a phylogenetic signal. However, resource allocation to carpels is independent of phylogeny, which suggests trait divergences among closely related species during the diversification into different environmental conditions. We tested this hypothesis across 37 species of Cistaceae along a temperature and precipitation gradient, including semiarid, dry, subhumid and humid sites. We quantified the proportions of dry mass and nutrient investment to carpels and tested the influence of the climatic gradient and site-specific precipitation on the interspecific variation in carpel resource allocation. Lowest and highest percentages of resource allocation to carpels ranged from 1.5-4.2% to 24.2-36.6%, respectively. The proportion of resources comprised in carpels significantly decreased with increasing precipitation/decreasing temperature. Thus, carpels comprised proportionally more resources under drier and hotter conditions, especially in semiarid sites. Our results demonstrate how the extent of climatic constraints is more important than phylogenetic relationships in determining stress-induced differences in carpel resource allocation across species of Cistaceae in a Mediterranean environment. We suggest that allocation of proportionally more resources to carpels in drier and hotter sites lies within a strategy to deal with the most stressful conditions by means of a high reproductive effort.
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Affiliation(s)
- A L Teixido
- Área de Biodiversidad y Conservación, Escuela Superior de Ciencias Experimentales y Tecnología, Universidad Rey Juan Carlos, Madrid, Spain
| | - F Valladares
- Museo Nacional de Ciencias Naturales, MNCN-CSIC, Madrid, Spain
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65
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Nürk NM, Atchison GW, Hughes CE. Island woodiness underpins accelerated disparification in plant radiations. THE NEW PHYTOLOGIST 2019; 224:518-531. [PMID: 30883788 PMCID: PMC6766886 DOI: 10.1111/nph.15797] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 03/12/2019] [Indexed: 05/08/2023]
Abstract
The evolution of secondary (insular) woodiness and the rapid disparification of plant growth forms associated with island radiations show intriguing parallels between oceanic islands and tropical alpine sky islands. However, the evolutionary significance of these phenomena remains poorly understood and the focus of debate. We explore the evolutionary dynamics of species diversification and trait disparification across evolutionary radiations in contrasting island systems compared with their nonisland relatives. We estimate rates of species diversification, growth form evolution and phenotypic space saturation for the classical oceanic island plant radiations - the Hawaiian silverswords and Macaronesian Echium - and the well-studied sky island radiations of Lupinus and Hypericum in the Andes. We show that secondary woodiness is associated with dispersal to islands and with accelerated rates of species diversification, accelerated disparification of plant growth forms and occupancy of greater phenotypic trait space for island clades than their nonisland relatives, on both oceanic and sky islands. We conclude that secondary woodiness is a prerequisite that could act as a key innovation, manifest as the potential to occupy greater trait space, for plant radiations on island systems in general, further emphasizing the importance of combinations of clade-specific traits and ecological opportunities in driving adaptive radiations.
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Affiliation(s)
- Nicolai M. Nürk
- Department of Plant SystematicsBayreuth Centre of Ecology and Environmental Research (BayCEER)University of BayreuthUniversitätsstrasse 3095440BayreuthGermany
| | - Guy W. Atchison
- Department of Systematic & Evolutionary BotanyUniversity of ZurichZollikerstrasse 1078008ZurichSwitzerland
| | - Colin E. Hughes
- Department of Systematic & Evolutionary BotanyUniversity of ZurichZollikerstrasse 1078008ZurichSwitzerland
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66
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Ewers‐Saucedo C, Pappalardo P. Testing adaptive hypotheses on the evolution of larval life history in acorn and stalked barnacles. Ecol Evol 2019; 9:11434-11447. [PMID: 31641484 PMCID: PMC6802071 DOI: 10.1002/ece3.5645] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 08/10/2019] [Accepted: 08/19/2019] [Indexed: 01/10/2023] Open
Abstract
Despite strong selective pressure to optimize larval life history in marine environments, there is a wide diversity with regard to developmental mode, size, and time larvae spend in the plankton. In the present study, we assessed if adaptive hypotheses explain the distribution of the larval life history of thoracican barnacles within a strict phylogenetic framework. We collected environmental and larval trait data for 170 species from the literature, and utilized a complete thoracican synthesis tree to account for phylogenetic nonindependence. In accordance with Thorson's rule, the fraction of species with planktonic-feeding larvae declined with water depth and increased with water temperature, while the fraction of brooding species exhibited the reverse pattern. Species with planktonic-nonfeeding larvae were overall rare, following no apparent trend. In agreement with the "size advantage" hypothesis proposed by Strathmann in 1977, egg and larval size were closely correlated. Settlement-competent cypris larvae were larger in cold water, indicative of advantages for large juveniles when growth is slowed. Planktonic larval duration, on the other hand, was uncorrelated to environmental variables. We conclude that different selective pressures appear to shape the evolution of larval life history in barnacles.
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67
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Greenwell MP, Brereton T, Day JC, Roy DB, Oliver TH. Predicting resilience of ecosystem functioning from co-varying species' responses to environmental change. Ecol Evol 2019; 9:11775-11790. [PMID: 31695887 PMCID: PMC6822053 DOI: 10.1002/ece3.5679] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 07/19/2019] [Accepted: 08/30/2019] [Indexed: 11/08/2022] Open
Abstract
Understanding how environmental change affects ecosystem function delivery is of primary importance for fundamental and applied ecology. Current approaches focus on single environmental driver effects on communities, mediated by individual response traits. Data limitations present constraints in scaling up this approach to predict the impacts of multivariate environmental change on ecosystem functioning. We present a more holistic approach to determine ecosystem function resilience, using long-term monitoring data to analyze the aggregate impact of multiple historic environmental drivers on species' population dynamics. By assessing covariation in population dynamics between pairs of species, we identify which species respond most synchronously to environmental change and allocate species into "response guilds." We then use "production functions" combining trait data to estimate the relative roles of species to ecosystem functions. We quantify the correlation between response guilds and production functions, assessing the resilience of ecosystem functioning to environmental change, with asynchronous dynamics of species in the same functional guild expected to lead to more stable ecosystem functioning. Testing this method using data for butterflies collected over four decades in the United Kingdom, we find three ecosystem functions (resource provisioning, wildflower pollination, and aesthetic cultural value) appear relatively robust, with functionally important species dispersed across response guilds, suggesting more stable ecosystem functioning. Additionally, by relating genetic distances to response guilds we assess the heritability of responses to environmental change. Our results suggest it may be feasible to infer population responses of butterflies to environmental change based on phylogeny-a useful insight for conservation management of rare species with limited population monitoring data. Our approach holds promise for overcoming the impasse in predicting the responses of ecosystem functions to environmental change. Quantifying co-varying species' responses to multivariate environmental change should enable us to significantly advance our predictions of ecosystem function resilience and enable proactive ecosystem management.
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Affiliation(s)
| | | | - John C. Day
- NERC Centre for Ecology & HydrologyWallingfordUK
| | - David B. Roy
- NERC Centre for Ecology & HydrologyWallingfordUK
| | - Tom H. Oliver
- School of Biological SciencesUniversity of ReadingReadingUK
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68
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Zhang H, Zeng Z, Zou Z, Zeng F. Climate, Life Form and Family Jointly Control Variation of Leaf Traits. PLANTS (BASEL, SWITZERLAND) 2019; 8:E286. [PMID: 31416214 PMCID: PMC6724092 DOI: 10.3390/plants8080286] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 08/04/2019] [Accepted: 08/12/2019] [Indexed: 11/16/2022]
Abstract
Variation in leaf traits may represent differences in physiological processes and environmental adaptative strategies. Using multivariate analyses, we investigated 13 leaf traits to quantify the trade-off in these traits and the trait-climate/biome relationships based on the China Plant Trait Database, which contains morphometric and physiological character information on 1215 species for 122 sites, ranging from the north to the tropics, and from deserts and grasslands to woodlands and forests. Leaf traits across the dataset of Chinese plants showed different spatial patterns along longitudinal and latitudinal gradients and high variation. There were significant positive or negative correlations among traits; however, with the exception of the leaf 13C:12C stable isotope ratio, there were no significant correlations between leaf area and other traits. Climate, life form, and family jointly accounted for 68.4% to 95.7% of trait variance. Amongst these forms of variation partitioning, the most important partitioning feature was the family independence of climate and life form (35.6% to 57.2%), while the joint effect of family and climate was 4.5% to 26.2%, and the joint effect of family and life form was 2.4% to 21.6%. The findings of this study will enhance our understanding of the variation in leaf traits in Chinese flora and the environmental adaptative strategies of plants against a background of global climate change, and also may enrich and improve the leaf economics spectrum of China.
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Affiliation(s)
- Hao Zhang
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
- Huanjiang Observation and Research Station for Karst Ecosystem, Chinese Academy of Sciences, Huanjiang 547100, China
- Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin 541006, China
| | - Zhaoxia Zeng
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
- Huanjiang Observation and Research Station for Karst Ecosystem, Chinese Academy of Sciences, Huanjiang 547100, China
| | - Zhigang Zou
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
- Huanjiang Observation and Research Station for Karst Ecosystem, Chinese Academy of Sciences, Huanjiang 547100, China
| | - Fuping Zeng
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China.
- Huanjiang Observation and Research Station for Karst Ecosystem, Chinese Academy of Sciences, Huanjiang 547100, China.
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69
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Stock W, Vanelslander B, Rüdiger F, Sabbe K, Vyverman W, Karsten U. Thermal Niche Differentiation in the Benthic Diatom Cylindrotheca closterium (Bacillariophyceae) Complex. Front Microbiol 2019; 10:1395. [PMID: 31293543 PMCID: PMC6598499 DOI: 10.3389/fmicb.2019.01395] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 06/04/2019] [Indexed: 01/01/2023] Open
Abstract
Coastal waters are expected to undergo severe warming in the coming decades. Very little is known about how diatoms, the dominant primary producers in these habitats, will cope with these changes. We investigated the thermal niche of Cylindrotheca closterium, a widespread benthic marine diatom, using 24 strains collected over a wide latitudinal gradient. A multi-marker phylogeny in combination with a species delimitation approach shows that C. closterium represents a (pseudo)cryptic species complex, and this is reflected in distinct growth response patterns in terms of optimum growth temperature, maximum growth rate, and thermal niche width. Strains from the same clade displayed a similar thermal response, suggesting niche conservation between closely related strains. Due to their lower maximum growth rate and smaller thermal niche width, we expect the polar species to be particularly sensitive to warming, and, in the absence of adaptation, to be replaced with species from lower latitudes.
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Affiliation(s)
- Willem Stock
- Laboratory of Protistology and Aquatic Ecology, Department of Biology, Ghent University, Ghent, Belgium
| | - Bart Vanelslander
- Laboratory of Protistology and Aquatic Ecology, Department of Biology, Ghent University, Ghent, Belgium
| | - Franziska Rüdiger
- Institute of Biological Sciences, Applied Ecology and Phycology, University of Rostock, Rostock, Germany
| | - Koen Sabbe
- Laboratory of Protistology and Aquatic Ecology, Department of Biology, Ghent University, Ghent, Belgium
| | - Wim Vyverman
- Laboratory of Protistology and Aquatic Ecology, Department of Biology, Ghent University, Ghent, Belgium
| | - Ulf Karsten
- Institute of Biological Sciences, Applied Ecology and Phycology, University of Rostock, Rostock, Germany
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70
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Salazar JC, del Rosario Castañeda M, Londoño GA, Bodensteiner BL, Muñoz MM. Physiological evolution during adaptive radiation: A test of the island effect in Anolis lizards. Evolution 2019; 73:1241-1252. [PMID: 30989637 PMCID: PMC6593988 DOI: 10.1111/evo.13741] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 04/06/2019] [Indexed: 01/09/2023]
Abstract
Phenotypic evolution is often exceptionally rapid on islands, resulting in numerous, ecologically diverse species. Although adaptive radiation proceeds along various phenotypic axes, the island effect of faster evolution has been mostly tested with regard to morphology. Here, we leveraged the physiological diversity and species richness of Anolis lizards to examine the evolutionary dynamics of three key traits: heat tolerance, body temperature, and cold tolerance. Contrary to expectation, we discovered slower heat tolerance evolution on islands. Additionally, island species evolve toward higher optimal body temperatures than mainland species. Higher optima and slower evolution in upper physiological limits are consistent with the Bogert effect, or evolutionary inertia due to thermoregulation. Correspondingly, body temperature is higher and more stable on islands than on the American mainland, despite similarity in thermal environments. Greater thermoregulation on islands may occur due to ecological release from competitors and predators compared to mainland environments. By reducing the costs of thermoregulation, ecological opportunity on islands may actually stymie, rather than hasten, physiological evolution. Our results emphasize that physiological diversity is an important axis of ecological differentiation in the adaptive radiation of anoles, and that behavior can impart distinct macroevolutionary footprints on physiological diversity on islands and continents.
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Affiliation(s)
- Jhan C. Salazar
- Facultad de Ciencias BiológicasDepartamento de Ciencias NaturalesUniversidad IcesiCaliValle del CaucaColombia
- Department of Biological SciencesVirginia TechBlacksburgVirginia24061
| | - María del Rosario Castañeda
- Facultad de Ciencias BiológicasDepartamento de Ciencias NaturalesUniversidad del ValleCaliValle del CaucaColombia
| | - Gustavo A. Londoño
- Facultad de Ciencias BiológicasDepartamento de Ciencias NaturalesUniversidad IcesiCaliValle del CaucaColombia
| | | | - Martha M. Muñoz
- Department of Biological SciencesVirginia TechBlacksburgVirginia24061
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71
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McShea DW, Wang SC, Brandon RN. A quantitative formulation of biology's first law. Evolution 2019; 73:1101-1115. [DOI: 10.1111/evo.13735] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Accepted: 03/24/2019] [Indexed: 12/13/2022]
Affiliation(s)
| | - Steve C. Wang
- Department of Mathematics and StatisticsSwarthmore College Swarthmore Pennsylvania
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72
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Amartuvshin N, Hülber K, Plutzar C, Tserenbaljid G. Functional traits but not environmental gradients explain seed weight in Mongolian plant species. PLANT BIOLOGY (STUTTGART, GERMANY) 2019; 21:559-562. [PMID: 30427106 DOI: 10.1111/plb.12938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 11/07/2018] [Indexed: 06/09/2023]
Abstract
Seed weight varies by several orders of magnitude among vascular plant species. However, the importance of potential drivers such as environmental conditions and plant functional traits have rarely been assessed for a larger taxonomic sample. We collected seeds of 148 species from 237 sites spread across Mongolia and compared their weight among the major zonal vegetation types, taxonomic groups and a set of functional traits (growth form, dispersal mode, fruit type, storage organs and palatability). Seed weight strongly varied among all functional traits and taxonomic groups, but no differences among vegetation zones were detected. These results suggest a low impact of environmental conditions on the evolution of seed weight, contrasting the strong phylogenetic signal.
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Affiliation(s)
- N Amartuvshin
- Institute of General and Experimental Biology, Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
| | - K Hülber
- Department of Botany and Biodiversity Research, University of Vienna, Vienna, Austria
| | - C Plutzar
- Department of Botany and Biodiversity Research, University of Vienna, Vienna, Austria
- Institute of Social Ecology, University of Natural Resources and Life Sciences, Vienna, Austria
| | - G Tserenbaljid
- Institute of General and Experimental Biology, Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
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73
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Czekanski-Moir JE, Rundell RJ. The Ecology of Nonecological Speciation and Nonadaptive Radiations. Trends Ecol Evol 2019; 34:400-415. [DOI: 10.1016/j.tree.2019.01.012] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Revised: 01/24/2019] [Accepted: 01/28/2019] [Indexed: 01/08/2023]
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74
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Yan Y, Liu Q, Zhang Q, Ding Y, Li Y. Adaptation of Dominant Species to Drought in the Inner Mongolia Grassland - Species Level and Functional Type Level Analysis. FRONTIERS IN PLANT SCIENCE 2019; 10:231. [PMID: 31040855 PMCID: PMC6477032 DOI: 10.3389/fpls.2019.00231] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 02/11/2019] [Indexed: 06/09/2023]
Abstract
The adaptation of plants to drought through the adjustment of their leaf functional traits is a hot topic in plant ecology. However, while there is a good understanding of how individual species adapt to drought in this way, the way in which different functional types adapt to drought along a precipitation gradient remains poorly understood. In this study, we sampled 22 sites along a precipitation gradient in the Inner Mongolia grassland and measured eight leaf functional traits across 39 dominant species to determine the adaptive strategies of plant leaves to drought at the species and plant functional type levels. We found that leaf functional traits were mainly influenced by both aridity and phylogeny at the species level. There were four types of leaf adaptations to drought at the functional type level: adjusting the carbon-nitrogen ratio, the specific leaf area, the nitrogen content, and the specific leaf area and leaf nitrogen content simultaneously. These findings indicate that there is the trade-offs relationship between water and nitrogen acquisition as the level of drought increases, which is consistent with the worldwide leaf economics spectrum. In this study, we highlighted that the leaf economic spectrum can be adopted to reveal the adaptations of plants to drought in the Inner Mongolia grassland.
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Affiliation(s)
- Yongzhi Yan
- Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot, China
| | - Qingfu Liu
- Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot, China
- Center for Biodiversity Dynamics in a Changing World, BIOCHANGE, Aarhus University, Aarhus, Denmark
| | - Qing Zhang
- Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot, China
| | - Yong Ding
- Institute of Grassland Research, Chinese Academy of Agricultural Sciences, Hohhot, China
| | - Yuanheng Li
- Institute of Grassland Research, Chinese Academy of Agricultural Sciences, Hohhot, China
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75
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de Camargo MGG, Lunau K, Batalha MA, Brings S, de Brito VLG, Morellato LPC. How flower colour signals allure bees and hummingbirds: a community-level test of the bee avoidance hypothesis. THE NEW PHYTOLOGIST 2019; 222:1112-1122. [PMID: 30444536 DOI: 10.1111/nph.15594] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 11/08/2018] [Indexed: 05/07/2023]
Abstract
Colour signals are the main floral trait for plant-pollinator communication. Owing to visual specificities, flower visitors exert different selective pressures on flower colour signals of plant communities. Although they evolved to attract pollinators, matching their visual sensitivity and colour preferences, floral signals may also evolve to avoid less efficient pollinators and antagonistic flower visitors. We evaluated evidence for the bee avoidance hypothesis in a Neotropical community pollinated mainly by bees and hummingbirds, the campo rupestre. We analysed flower reflectance spectra, compared colour variables of bee-pollinated flowers (bee-flowers; 244 species) and hummingbird-pollinated flowers (hummingbird-flowers; 39 species), and looked for evidence of bee sensorial exclusion in hummingbird-flowers. Flowers were equally contrasting for hummingbirds. Hummingbird-flowers were less conspicuous to bees, reflecting mainly long wavelengths and avoiding red-blind visitors. Bee-flowers reflected more short wavelengths, were more conspicuous to bees (higher contrasts and spectral purity) than hummingbird-flowers and displayed floral guides more frequently, favouring flower attractiveness, discrimination and handling by bees. Along with no phylogenetic signal, the differences in colour signal strategies between bee- and hummingbird-flowers are the first evidence of the bee avoidance hypothesis at a community level and reinforce the role of pollinators as a selective pressure driving flower colour diversity.
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Affiliation(s)
- Maria Gabriela Gutierrez de Camargo
- Departamento de Botânica, Laboratório de Fenologia, Instituto de Biociências, UNESP-Universidade Estadual Paulista, 13506-900, Rio Claro, São Paulo, Brasil
| | - Klaus Lunau
- Department Biology, Institute of Sensory Ecology, Heinrich-Heine-University Düsseldorf, 40225, Düsseldorf, Germany
| | - Marco Antônio Batalha
- Department of Botany, Federal University of São Carlos, 13565-905, São Carlos, São Paulo, Brazil
| | - Sebastian Brings
- Department Biology, Institute of Sensory Ecology, Heinrich-Heine-University Düsseldorf, 40225, Düsseldorf, Germany
| | | | - Leonor Patrícia Cerdeira Morellato
- Departamento de Botânica, Laboratório de Fenologia, Instituto de Biociências, UNESP-Universidade Estadual Paulista, 13506-900, Rio Claro, São Paulo, Brasil
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76
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Aguilar-Trigueros CA, Hempel S, Powell JR, Cornwell WK, Rillig MC. Bridging reproductive and microbial ecology: a case study in arbuscular mycorrhizal fungi. THE ISME JOURNAL 2019; 13:873-884. [PMID: 30504896 PMCID: PMC6461870 DOI: 10.1038/s41396-018-0314-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 07/18/2018] [Accepted: 10/07/2018] [Indexed: 11/09/2022]
Abstract
Offspring size is a key trait for understanding the reproductive ecology of species, yet studies addressing the ecological meaning of offspring size have so far been limited to macro-organisms. We consider this a missed opportunity in microbial ecology and provide what we believe is the first formal study of offspring-size variation in microbes using reproductive models developed for macro-organisms. We mapped the entire distribution of fungal spore size in the arbuscular mycorrhizal (AM) fungi (subphylum Glomeromycotina) and tested allometric expectations of this trait to offspring (spore) output and body size. Our results reveal a potential paradox in the reproductive ecology of AM fungi: while large spore-size variation is maintained through evolutionary time (independent of body size), increases in spore size trade off with spore output. That is, parental mycelia of large-spored species produce fewer spores and thus may have a fitness disadvantage compared to small-spored species. The persistence of the large-spore strategy, despite this apparent fitness disadvantage, suggests the existence of advantages to large-spored species that could manifest later in fungal life history. Thus, we consider that solving this paradox opens the door to fruitful future research establishing the relationship between offspring size and other AM life history traits.
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Affiliation(s)
- Carlos A Aguilar-Trigueros
- Freie Universität Berlin, Institute of Biology, Berlin, D-14195, Germany.
- Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), Berlin, D-14195, Germany.
| | - Stefan Hempel
- Freie Universität Berlin, Institute of Biology, Berlin, D-14195, Germany
- Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), Berlin, D-14195, Germany
| | - Jeff R Powell
- Hawkesbury Institute for the Environment, University of Western Sydney, Penrith, NSW, 2751, Australia
| | - William K Cornwell
- Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW, Australia
| | - Matthias C Rillig
- Freie Universität Berlin, Institute of Biology, Berlin, D-14195, Germany
- Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), Berlin, D-14195, Germany
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77
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Simmons LW, Fitzpatrick JL. Female genitalia can evolve more rapidly and divergently than male genitalia. Nat Commun 2019; 10:1312. [PMID: 30899023 PMCID: PMC6428859 DOI: 10.1038/s41467-019-09353-0] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 03/07/2019] [Indexed: 01/02/2023] Open
Abstract
Male genitalia exhibit patterns of divergent evolution driven by sexual selection. In contrast, for many taxonomic groups, female genitalia are relatively uniform and their patterns of evolution remain largely unexplored. Here we quantify variation in the shape of female genitalia across onthophagine dung beetles, and use new comparative methods to contrast their rates of divergence with those of male genitalia. As expected, male genital shape has diverged more rapidly than a naturally selected trait, the foretibia. Remarkably, female genital shape has diverged nearly three times as fast as male genital shape. Our results dispel the notion that female genitalia do not show the same patterns of divergent evolution as male genitalia, and suggest that female genitalia are under sexual selection through their role in female choice. Although male genital shape is known to evolve rapidly in response to sexual selection, relatively little is known about the evolution of female genital shape. Here, the authors show that across onthophagine dung beetles, female genital shape has diverged much more rapidly than male genital shape.
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Affiliation(s)
- Leigh W Simmons
- Centre for Evolutionary Biology, School of Biological Sciences (M092), The University of Western Australia, Crawley, WA, 6009, Australia.
| | - John L Fitzpatrick
- Department of Zoology/Ethology, Stockholm University, Svante Arrhenius väg 18B, SE-10691, Stockholm, Sweden
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78
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Crouch NMA, Ricklefs RE. Speciation Rate Is Independent of the Rate of Evolution of Morphological Size, Shape, and Absolute Morphological Specialization in a Large Clade of Birds. Am Nat 2019; 193:E78-E91. [PMID: 30912971 DOI: 10.1086/701630] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Whether ecological differences between species evolve in parallel with lineage diversification is a fundamental issue in evolutionary biology. These processes might be connected if conditions that favor the proliferation of species, such as release from competitors, facilitate the evolution of novel ecological relationships. Despite this, phylogenetic studies do not consistently identify such a connection. Conversely, if higher diversity caused species to become increasingly specialized ecologically, then lineage diversification might become dissociated from ecological diversification. In this analysis, we ask whether the rate of lineage diversification in a large clade of birds is correlated with morphological specialization and with rates of morphological evolution. We find that morphological variation is related to species richness within clades but that rates of morphological evolution are decoupled from the rate of lineage diversification. Additionally, morphological specialization within lineages is independent of the rate at which lineages diversify, with the results apparently robust against false negative inference. This dissociation is likely a consequence of the major ecomorphological differences between avian clades arising early in their evolutionary history, with comparatively little variation added subsequently, while avian diversification has been driven predominantly by geographic isolation and sexual selection. Accordingly, biodiversity appears to be limited by the extent to which taxa can subdivide exploited regions of ecological space and not just overall ecological opportunity.
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79
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Bribiesca R, Herrera‐Alsina L, Ruiz‐Sanchez E, Sánchez‐González LA, Schondube JE. Body mass as a supertrait linked to abundance and behavioral dominance in hummingbirds: A phylogenetic approach. Ecol Evol 2019; 9:1623-1637. [PMID: 30847060 PMCID: PMC6392494 DOI: 10.1002/ece3.4785] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Revised: 10/17/2018] [Accepted: 11/08/2018] [Indexed: 11/25/2022] Open
Abstract
Body mass has been considered one of the most critical organismal traits, and its role in many ecological processes has been widely studied. In hummingbirds, body mass has been linked to ecological features such as foraging performance, metabolic rates, and cost of flying, among others. We used an evolutionary approach to test whether body mass is a good predictor of two of the main ecological features of hummingbirds: their abundances and behavioral dominance. To determine whether a species was abundant and/or behaviorally dominant, we used information from the literature on 249 hummingbird species. For abundance, we classified a species as "plentiful" if it was described as the most abundant species in at least part of its geographic distribution, while we deemed a species to be "behaviorally dominant" when it was described as pugnacious (notably aggressive). We found that plentiful hummingbird species had intermediate body masses and were more phylogenetically related to each other than expected by chance. Conversely, behaviorally dominant species tended to have larger body masses and showed a random pattern of distribution in the phylogeny. Additionally, small-bodied hummingbird species were not considered plentiful by our definition and did not exhibit behavioral dominance. These results suggest a link between body mass, abundance, and behavioral dominance in hummingbirds. Our findings indicate the existence of a body mass range associated with the capacity of hummingbird species to be plentiful, behaviorally dominant, or to show both traits. The mechanisms behind these relationships are still unclear; however, our results provide support for the hypothesis that body mass is a supertrait that explains abundance and behavioral dominance in hummingbirds.
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Affiliation(s)
- Rafael Bribiesca
- Posgrado en Ciencias Biológicas, Unidad de Posgrado, Coordinación del Posgrado en Ciencias BiológicasUNAMMexico CityMexico
- Instituto de Investigaciones en Ecosistemas y SustentabilidadUniversidad Nacional Autónoma de MéxicoMoreliaMexico
| | | | - Eduardo Ruiz‐Sanchez
- Departamento de Botánica y Zoología, Centro Universitario de Ciencias Biológicas y AgropecuariasUniversidad de GuadalajaraZapopanMéxico
| | - Luis A. Sánchez‐González
- Museo de Zoología “Alfonso L. Herrera”, Depto. de Biología Evolutiva, Facultad de CienciasUniversidad Nacional Autónoma de MéxicoCiudad de MéxicoMéxico
| | - Jorge E. Schondube
- Instituto de Investigaciones en Ecosistemas y SustentabilidadUniversidad Nacional Autónoma de MéxicoMoreliaMexico
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80
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Sakamoto M, Ruta M, Venditti C. Extreme and rapid bursts of functional adaptations shape bite force in amniotes. Proc Biol Sci 2019; 286:20181932. [PMID: 30963871 PMCID: PMC6367170 DOI: 10.1098/rspb.2018.1932] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 12/12/2018] [Indexed: 11/12/2022] Open
Abstract
Adaptation is the fundamental driver of functional and biomechanical evolution. Accordingly, the states of biomechanical traits (absolute or relative trait values) have long been used as proxies for adaptations in response to direct selection. However, ignoring evolutionary history, in particular ancestry, passage of time and the rate of evolution, can be misleading. Here, we apply a recently developed phylogenetic statistical approach using significant rate shifts to detect instances of exceptional rates of adaptive changes in bite force in a large group of terrestrial vertebrates, the amniotes. Our results show that bite force in amniotes evolved through multiple bursts of exceptional rates of adaptive changes, whereby whole groups-including Darwin's finches, maniraptoran dinosaurs (group of non-avian dinosaurs including birds), anthropoids and hominins (fossil and modern humans)-experienced significant rate increases compared to the background rate. However, in most parts of the amniote tree of life, we find no exceptional rate increases, indicating that coevolution with body size was primarily responsible for the patterns observed in bite force. Our approach represents a template for future studies in functional morphology and biomechanics, where exceptional rates of adaptive changes can be quantified and potentially linked to specific ecological factors underpinning major evolutionary radiations.
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Affiliation(s)
- Manabu Sakamoto
- School of Biological Sciences, University of Reading, Reading, Berkshire RG6 6BX, UK
| | - Marcello Ruta
- School of Life Sciences, University of Lincoln, Lincoln, Lincolnshire LN6 7DL, UK
| | - Chris Venditti
- School of Biological Sciences, University of Reading, Reading, Berkshire RG6 6BX, UK
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81
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Yang Y, Wang H, Harrison SP, Prentice IC, Wright IJ, Peng C, Lin G. Quantifying leaf-trait covariation and its controls across climates and biomes. THE NEW PHYTOLOGIST 2019; 221:155-168. [PMID: 30272817 DOI: 10.1111/nph.15422] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Accepted: 07/10/2018] [Indexed: 05/18/2023]
Abstract
Plant functional ecology requires the quantification of trait variation and its controls. Field measurements on 483 species at 48 sites across China were used to analyse variation in leaf traits, and assess their predictability. Principal components analysis (PCA) was used to characterize trait variation, redundancy analysis (RDA) to reveal climate effects, and RDA with variance partitioning to estimate separate and overlapping effects of site, climate, life-form and family membership. Four orthogonal dimensions of total trait variation were identified: leaf area (LA), internal-to-ambient CO2 ratio (χ), leaf economics spectrum traits (specific leaf area (SLA) versus leaf dry matter content (LDMC) and nitrogen per area (Narea )), and photosynthetic capacities (Vcmax , Jmax at 25°C). LA and χ covaried with moisture index. Site, climate, life form and family together explained 70% of trait variance. Families accounted for 17%, and climate and families together 29%. LDMC and SLA showed the largest family effects. Independent life-form effects were small. Climate influences trait variation in part by selection for different life forms and families. Trait values derived from climate data via RDA showed substantial predictive power for trait values in the available global data sets. Systematic trait data collection across all climates and biomes is still necessary.
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Affiliation(s)
- Yanzheng Yang
- Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, 100084, China
- Joint Center for Global Change Studies (JCGCS), Beijing, 100875, China
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Han Wang
- Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, 100084, China
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Sandy P Harrison
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China
- School of Archaeology, Geography and Environmental Sciences (SAGES), University of Reading, Reading, RG6 6AH, UK
| | - I Colin Prentice
- Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, 100084, China
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China
- AXA Chair of Biosphere and Climate Impacts, Department of Life Sciences, Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot, SL5 7PY, UK
- Department of Biological Sciences, Macquarie University, North Ryde, NSW, 2109, Australia
| | - Ian J Wright
- Department of Biological Sciences, Macquarie University, North Ryde, NSW, 2109, Australia
| | - Changhui Peng
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China
- Department of Biological Sciences, Institute of Environmental Sciences, University of Quebec at Montreal, C.P. 8888, Succ. Centre-Ville, Montréal, H3C 3P8, QC, Canada
| | - Guanghui Lin
- Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, 100084, China
- Key Laboratory of Stable Isotope and Gulf Ecology, Graduate School at Shenzhen, Tsinghua University, Shenzhen, Guangdong, 518055, China
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82
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Liu B, Chen HYH, Yang J. Understory Community Assembly Following Wildfire in Boreal Forests: Shift From Stochasticity to Competitive Exclusion and Environmental Filtering. FRONTIERS IN PLANT SCIENCE 2018; 9:1854. [PMID: 30631332 PMCID: PMC6315132 DOI: 10.3389/fpls.2018.01854] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Accepted: 11/30/2018] [Indexed: 06/09/2023]
Abstract
Understory vegetation accounts for the majority of plant species diversity and serves as a driver of overstory succession and nutrient cycling in boreal forest ecosystems. However, investigations of the underlying assembly processes of understory vegetation associated with stand development following a wildfire disturbance are rare, particularly in Eurasian boreal forests. In this study, we measured the phylogenetic and functional diversity and trait dispersions of understory communities and tested how these patterns changed with stand age in the Great Xing'an Mountains of Northeastern China. Contrary to our expectation, we found that understory functional traits were phylogenetically convergent. We found that random patterns of phylogenetic, functional, and trait dispersions were dominant for most of our surveyed plots, indicating that stochastic processes may play a crucial role in the determination of understory community assembly. Yet, there was an evidence that understory community assembly was also determined by competitive exclusion and environmental filtering to a certain degree, which was demonstrated by the observed clustered phylogenetic and functional patterns in some plots. Our results showed that phylogenetic diversity significantly decreased, while functional diversity increased with stand age. The observed shift trends in phylogenetic and functional patterns between random to clustering along with stand age, which suggested that understory community assembly shifted from stochasticity to competitive exclusion and environmental filtering. Our study presented a difference to community assembly and species coexistence theories insisted solely on deterministic processes. These findings indicated that Eurasian boreal understory communities may be primarily regulated by stochastic processes, providing complementary evidence that stochastic processes are crucial in the determination of community assembly both in tropical and boreal forests.
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Affiliation(s)
- Bo Liu
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
- Faculty of Natural Resources Management, Lakehead University, Thunder Bay, ON, Canada
| | - Han Y. H. Chen
- Faculty of Natural Resources Management, Lakehead University, Thunder Bay, ON, Canada
- Key Laboratory for Humid Subtropical Eco-geographical Processes of the Ministry of Education, Fujian Normal University, Fuzhou, China
| | - Jian Yang
- Department of Forestry and Natural Resources, University of Kentucky, Lexington, KY, United States
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83
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Rodrigues JFM, Villalobos F, Iverson JB, Diniz-Filho JAF. Climatic niche evolution in turtles is characterized by phylogenetic conservatism for both aquatic and terrestrial species. J Evol Biol 2018; 32:66-75. [PMID: 30387214 DOI: 10.1111/jeb.13395] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 10/29/2018] [Indexed: 01/29/2023]
Abstract
Understanding how the climatic niche of species evolved has been a topic of high interest in current theoretical and applied macroecological studies. However, little is known regarding how species traits might influence climatic niche evolution. Here, we evaluated patterns of climatic niche evolution in turtles (tortoises and freshwater turtles) and whether species habitat (terrestrial or aquatic) influences these patterns. We used phylogenetic, climatic and distribution data for 261 species to estimate their climatic niches. Then, we compared whether niche overlap between sister species was higher than between random species pairs and evaluated whether niche optima and rates varied between aquatic and terrestrial species. Sister species had higher values of niche overlap than random species pairs, suggesting phylogenetic climatic niche conservatism in turtles. The climatic niche evolution of the group followed an Ornstein-Uhlenbeck model with different optimum values for aquatic and terrestrial species, but we did not find consistent evidence of differences in their rates of climatic niche evolution. We conclude that phylogenetic climatic niche conservatism occurs among turtle species. Furthermore, terrestrial and aquatic species occupy different climatic niches but these seem to have evolved at similar evolutionary rates, reinforcing the importance of habitat in understanding species climatic niches and their evolution.
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Affiliation(s)
- João Fabrício M Rodrigues
- Departamento de Ecologia, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Goiânia, Brazil
| | - Fabricio Villalobos
- Departamento de Ecologia, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Goiânia, Brazil.,Red de Biología Evolutiva, Instituto de Ecología, Xalapa, Mexico
| | - John B Iverson
- Department of Biology, Earlham College, Richmond, Indiana
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84
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Spalink D, Kriebel R, Li P, Pace MC, Drew BT, Zaborsky JG, Rose J, Drummond CP, Feist MA, Alverson WS, Waller DM, Cameron KM, Givnish TJ, Sytsma KJ. Spatial phylogenetics reveals evolutionary constraints on the assembly of a large regional flora. AMERICAN JOURNAL OF BOTANY 2018; 105:1938-1950. [PMID: 30408151 DOI: 10.1002/ajb2.1191] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 08/20/2018] [Indexed: 06/08/2023]
Abstract
PREMISE OF THE STUDY We used spatial phylogenetics to analyze the assembly of the Wisconsin flora, linking processes of dispersal and niche evolution to spatial patterns of floristic and phylogenetic diversity and testing whether phylogenetic niche conservatism can account for these patterns. METHODS We used digitized records and a new molecular phylogeny for 93% of vascular plants in Wisconsin to estimate spatial variation in species richness and phylogenetic α and β diversity in a native flora shaped mainly by postglacial dispersal and response to environmental gradients. We developed distribution models for all species and used these to infer fine-scale variation in potential diversity, phylogenetic distance, and interspecific range overlaps. We identified 11 bioregions based on floristic composition, mapped areas of neo- and paleo-endemism to establish new conservation priorities and predict how community-assembly patterns should shift with climatic change. KEY RESULTS Spatial phylogenetic turnover most strongly reflects differences in temperature and spatial distance. For all vascular plants, assemblages shift from phylogenetically clustered to overdispersed northward, contrary to most other studies. This pattern is lost for angiosperms alone, illustrating the importance of phylogenetic scale. CONCLUSIONS Species ranges and assemblage composition appear driven primarily by phylogenetic niche conservatism. Closely related species are ecologically similar and occupy similar territories. The average level and geographic structure of plant phylogenetic diversity within Wisconsin are expected to greatly decline over the next half century, while potential species richness will increase throughout the state. Our methods can be applied to allochthonous communities throughout the world.
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Affiliation(s)
- Daniel Spalink
- Department of Botany, University of Wisconsin, 430 Lincoln Drive, Madison, Wisconsin, 53704, USA
- Department of Ecosystem Science and Management, Texas A&M University, 2138 TAMU, College Station, Texas, 77843, USA
| | - Ricardo Kriebel
- Department of Botany, University of Wisconsin, 430 Lincoln Drive, Madison, Wisconsin, 53704, USA
| | - Pan Li
- Key Laboratory of Conservation Biology for Endangered Wildlife of the Ministry of Education, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Matthew C Pace
- New York Botanical Garden, 2900 Southern Blvd., Bronx, New York, 10485
| | - Bryan T Drew
- Department of Biology, University of Nebraska-Kearney, 2401 11th Avenue, Kearney, Nebraska, 68849, USA
| | - John G Zaborsky
- Department of Botany, University of Wisconsin, 430 Lincoln Drive, Madison, Wisconsin, 53704, USA
| | - Jeffrey Rose
- Department of Botany, University of Wisconsin, 430 Lincoln Drive, Madison, Wisconsin, 53704, USA
| | - Chloe P Drummond
- Department of Botany, University of Wisconsin, 430 Lincoln Drive, Madison, Wisconsin, 53704, USA
| | - Mary Ann Feist
- Department of Botany, University of Wisconsin, 430 Lincoln Drive, Madison, Wisconsin, 53704, USA
| | - William S Alverson
- Department of Botany, University of Wisconsin, 430 Lincoln Drive, Madison, Wisconsin, 53704, USA
| | - Donald M Waller
- Department of Botany, University of Wisconsin, 430 Lincoln Drive, Madison, Wisconsin, 53704, USA
| | - Kenneth M Cameron
- Department of Botany, University of Wisconsin, 430 Lincoln Drive, Madison, Wisconsin, 53704, USA
| | - Thomas J Givnish
- Department of Botany, University of Wisconsin, 430 Lincoln Drive, Madison, Wisconsin, 53704, USA
| | - Kenneth J Sytsma
- Department of Botany, University of Wisconsin, 430 Lincoln Drive, Madison, Wisconsin, 53704, USA
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85
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Felice RN, Randau M, Goswami A. A fly in a tube: Macroevolutionary expectations for integrated phenotypes. Evolution 2018; 72:2580-2594. [PMID: 30246245 PMCID: PMC6585935 DOI: 10.1111/evo.13608] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 09/07/2018] [Accepted: 09/13/2018] [Indexed: 02/03/2023]
Abstract
Phenotypic integration and modularity are ubiquitous features of complex organisms, describing the magnitude and pattern of relationships among biological traits. A key prediction is that these relationships, reflecting genetic, developmental, and functional interactions, shape evolutionary processes by governing evolvability and constraint. Over the last 60 years, a rich literature of research has quantified patterns of integration and modularity across a variety of clades and systems. Only recently has it become possible to contextualize these findings in a phylogenetic framework to understand how trait integration interacts with evolutionary tempo and mode. Here, we review the state of macroevolutionary studies of integration and modularity, synthesizing empirical and theoretical work into a conceptual framework for predicting the effects of integration on evolutionary rate and disparity: a fly in a tube. While magnitude of integration is expected to influence the potential for phenotypic variation to be produced and maintained, thus defining the shape and size of a tube in morphospace, evolutionary rate, or the speed at which a fly moves around the tube, is not necessarily controlled by trait interactions. Finally, we demonstrate this reduced disparity relative to the Brownian expectation for a given rate of evolution with an empirical example: the avian cranium.
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Affiliation(s)
- Ryan N Felice
- Department of Life Sciences, The Natural History Museum, London SW7 5DB, United Kingdom.,Department of Genetics, Evolution, and Environment, University College London, London WC1E 6BT, United Kingdom
| | - Marcela Randau
- Department of Life Sciences, The Natural History Museum, London SW7 5DB, United Kingdom.,Department of Genetics, Evolution, and Environment, University College London, London WC1E 6BT, United Kingdom
| | - Anjali Goswami
- Department of Life Sciences, The Natural History Museum, London SW7 5DB, United Kingdom.,Department of Genetics, Evolution, and Environment, University College London, London WC1E 6BT, United Kingdom
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86
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Affiliation(s)
- Kjetil Lysne Voje
- Department of BiosciencesCentre for Ecological and Evolutionary Synthesis (CEES)University of Oslo Oslo Norway
- Department of Earth SciencesUppsala University Uppsala Sweden
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87
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Funk JL, Wolf AA. Testing the trait-based community framework: Do functional traits predict competitive outcomes? Ecology 2018; 97:2206-2211. [PMID: 27859064 DOI: 10.1002/ecy.1484] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 03/19/2016] [Accepted: 05/12/2016] [Indexed: 11/11/2022]
Abstract
Plant traits can be used to understand a range of ecological processes, including competition with invasive species. The extent to which native and invasive species are competing via limiting similarity or trait hierarchies has important implications for the management of invaded communities. We screened 47 native species that co-occur with Festuca perennis, a dominant invader in California serpentine grassland, for traits pertaining to resource use and acquisition. We then grew F. perennis with 10 species spanning a range of functional similarity in pairwise competition trials. Functionally similar species did not have a strong adverse effect on F. perennis performance as would be expected by limiting similarity theory. Phylogenetic relatedness, which may integrate a number of functional traits, was also a poor predictor of competitive outcome. Instead, species with high specific root length, low root-to-shoot biomass ratio, and low leaf nitrogen concentration were more effective at suppressing the growth of F. perennis. Our results suggest that fitness differences (i.e., trait hierarchies) may be more important than niche differences (i.e., limiting similarity) in structuring competitive outcomes in this system and may be a promising approach for the restoration of invaded systems.
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Affiliation(s)
- Jennifer L Funk
- Schmid College of Science and Technology, Chapman University, 1 University Drive, Orange, California, 92866, USA
| | - Amelia A Wolf
- Department of Ecology, Evolution, and Environmental Biology, Columbia University, New York, New York, 10027, USA
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88
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Bloom DD, Burns MD, Schriever TA. Evolution of body size and trophic position in migratory fishes: a phylogenetic comparative analysis of Clupeiformes (anchovies, herring, shad and allies). Biol J Linn Soc Lond 2018. [DOI: 10.1093/biolinnean/bly106] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Devin D Bloom
- Department of Biological Sciences, Western Michigan University, Kalamazoo, MI, USA
- Institute of the Environment and Sustainability, Western Michigan University, Kalamazoo, MI, USA
| | - Michael D Burns
- Department of Fisheries and Wildlife, Oregon State University, Corvallis, OR, USA
| | - Tiffany A Schriever
- Department of Biological Sciences, Western Michigan University, Kalamazoo, MI, USA
- Institute of the Environment and Sustainability, Western Michigan University, Kalamazoo, MI, USA
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89
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Muñoz MM, Hu Y, Anderson PSL, Patek SN. Strong biomechanical relationships bias the tempo and mode of morphological evolution. eLife 2018; 7:e37621. [PMID: 30091704 PMCID: PMC6133543 DOI: 10.7554/elife.37621] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 08/08/2018] [Indexed: 12/17/2022] Open
Abstract
The influence of biomechanics on the tempo and mode of morphological evolution is unresolved, yet is fundamental to organismal diversification. Across multiple four-bar linkage systems in animals, we discovered that rapid morphological evolution (tempo) is associated with mechanical sensitivity (strong correlation between a mechanical system's output and one or more of its components). Mechanical sensitivity is explained by size: the smallest link(s) are disproportionately affected by length changes and most strongly influence mechanical output. Rate of evolutionary change (tempo) is greatest in the smallest links and trait shifts across phylogeny (mode) occur exclusively via the influential, small links. Our findings illuminate the paradigms of many-to-one mapping, mechanical sensitivity, and constraints: tempo and mode are dominated by strong correlations that exemplify mechanical sensitivity, even in linkage systems known for exhibiting many-to-one mapping. Amidst myriad influences, mechanical sensitivity imparts distinct, predictable footprints on morphological diversity.
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Affiliation(s)
- Martha M Muñoz
- Department of Biological SciencesVirginia TechBlacksburgUnited States
- Department of BiologyDuke UniversityDurhamUnited States
| | - Y Hu
- Department of Biological SciencesUniversity of Rhode IslandKingstonUnited States
| | - Philip S L Anderson
- Department of Animal BiologyUniversity of IllinoisUrbana-ChampaignUnited States
| | - SN Patek
- Department of BiologyDuke UniversityDurhamUnited States
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90
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Glade-Vargas N, Hinojosa LF, Leppe M. Evolution of Climatic Related Leaf Traits in the Family Nothofagaceae. FRONTIERS IN PLANT SCIENCE 2018; 9:1073. [PMID: 30100913 PMCID: PMC6073098 DOI: 10.3389/fpls.2018.01073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 07/03/2018] [Indexed: 06/08/2023]
Abstract
The current relationship between leaf traits and environmental variables has been widely used as a proxy for climate estimates. However, it has been observed that the phylogenetic relationships between taxa also influence the evolution of climatic related leaf traits, implying that the direct use of the physiognomy-climate relation should be corrected by their ancestor-descendant relations. Here, we analyze the variation of 20 leaf traits during the evolution of 27 species in the Gondwana family Nothofagaceae. We evaluate whether the evolution of these traits is exclusively associated with past climate variations or whether they are restricted by phylogenetic relationships. Our results indicate that four leaf traits, associated with size and shape, had consistently a phylogenetic independent evolution, suggesting adaptive variation with the environment. While three of the traits, presented consistently phylogenetic signal and fit a Brownian motion or Ornstein-Uhlenbeck model of evolution, suggesting that the evolution of these traits is restrained by phylogenetic relationships and implying that phylogenetic corrections should be made for the family Nothofagaceae to use them as climatic proxy. Finally, this study highlights the importance of evaluating the evolutionary history of climatic related leaf traits before conducting paleoclimate estimates.
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Affiliation(s)
- Nataly Glade-Vargas
- Laboratorio de Paleoecología, Facultad de Ciencias, Universidad de Chile, Santiago, Chile
- Instituto de Ecología y Biodiversidad, Santiago, Chile
| | - Luis F. Hinojosa
- Laboratorio de Paleoecología, Facultad de Ciencias, Universidad de Chile, Santiago, Chile
- Instituto de Ecología y Biodiversidad, Santiago, Chile
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91
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Different trends in phylogenetic and functional structure of plant communities along an elevation gradient. Ecol Res 2018. [DOI: 10.1007/s11284-018-1638-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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92
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Fonseca LHM, Lohmann LG. Combining high-throughput sequencing and targeted loci data to infer the phylogeny of the “Adenocalymma-Neojobertia” clade (Bignonieae, Bignoniaceae). Mol Phylogenet Evol 2018; 123:1-15. [DOI: 10.1016/j.ympev.2018.01.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 01/25/2018] [Accepted: 01/31/2018] [Indexed: 10/18/2022]
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93
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Rolshausen G, Davies TJ, Hendry AP. Evolutionary Rates Standardized for Evolutionary Space: Perspectives on Trait Evolution. Trends Ecol Evol 2018; 33:379-389. [DOI: 10.1016/j.tree.2018.04.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 04/04/2018] [Accepted: 04/05/2018] [Indexed: 12/30/2022]
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94
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Tucker CM, Davies TJ, Cadotte MW, Pearse WD. On the relationship between phylogenetic diversity and trait diversity. Ecology 2018; 99:1473-1479. [DOI: 10.1002/ecy.2349] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 02/26/2018] [Accepted: 03/21/2018] [Indexed: 01/08/2023]
Affiliation(s)
- Caroline M. Tucker
- Department of Biology University of North Carolina at Chapel Hill Coker Hall, CB #3280 120 South Road Chapel Hill North Carolina 27599‐3280 USA
- Centre d'Ecologie Fonctionnelle et Evolutive CNRS 1919, Route de Mende Montpellier Cedex 5 34293 France
| | - T. Jonathan Davies
- Department of Biology McGill University 1205 Avenue Docteur Penfield Montreal Quebec QC H3A 0G4 Canada
- African Centre for DNA Barcoding University of Johannesburg PO Box 524, Auckland Park Johannesburg 2006 South Africa
- Departments of Botany, Forest & Conservation Sciences University of British Columbia 6270 University Blvd. Vancouver British Columbia V6T 1Z4 Canada
| | - Marc W. Cadotte
- Department of Biological Sciences University of Toronto‐Scarborough 1265 Military Trail Toronto Ontario M1C 1A4 Canada
- Ecology and Evolutionary Biology University of Toronto 25 Willcocks St Toronto Ontario M5S 3B2 Canada
| | - William D. Pearse
- Department of Biology & Ecology Center Utah State University Logan Utah 84322 USA
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95
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Heterospecific plant-soil feedback and its relationship to plant traits, species relatedness, and co-occurrence in natural communities. Oecologia 2018; 187:679-688. [PMID: 29696389 DOI: 10.1007/s00442-018-4145-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Accepted: 04/11/2018] [Indexed: 10/17/2022]
Abstract
Plant-soil feedback is one of the mechanisms affecting co-existence of species, ecological succession, and species invasiveness. However, in contrast to conspecific plant-soil feedback, general patterns in heterospecific feedback are mostly unknown. We used a meta-analysis to search for correlations between heterospecific feedback and species relatedness, functional traits, and field co-occurrence patterns. We searched published literature and compiled a data set of 618 PSF interactions. We gathered data on species traits reflecting plant size and growth rate (height, specific leaf area, and life span), co-occurrence in habitats and phylogenetic distance between species pairs. We found that species grew better in soil conditioned by (i) close relatives than in conspecific soil, whereas there was no relationship with phylogeny for distantly related species, (ii) species of greater plant height (but there was no relationship with species SLA or life span), and (iii) species more frequently co-occurring in the field. The results show that heterospecific plant-soil feedback can be explained by plant traits (height) and is reflected in co-occurrence patterns. Phylogeny was a significant predictor of feedbacks over short phylogenetic distance, suggesting fast evolution of traits related to feedback. The low variability explained by the models, however, indicates that other factors such as environmental conditions possibly alter plant-soil feedback responses.
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96
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García-Navas V, Rodríguez-Rey M. The Evolution of Climatic Niches and its Role in Shaping Diversity Patterns in Diprotodontid Marsupials. J MAMM EVOL 2018. [DOI: 10.1007/s10914-018-9435-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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97
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Head CEI, Koldewey H, Pavoine S, Pratchett MS, Rogers AD, Taylor ML, Bonsall MB. Trait and phylogenetic diversity provide insights into community assembly of reef-associated shrimps (Palaemonidae) at different spatial scales across the Chagos Archipelago. Ecol Evol 2018; 8:4098-4107. [PMID: 29721283 PMCID: PMC5916300 DOI: 10.1002/ece3.3969] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 01/30/2018] [Accepted: 02/09/2018] [Indexed: 11/17/2022] Open
Abstract
Coral reefs are the most biodiverse marine ecosystem and one of the most threatened by global climate change impacts. The vast majority of diversity on reefs is comprised of small invertebrates that live within the reef structure, termed the cryptofauna. This component of biodiversity is hugely understudied, and many species remain undescribed. This study represents a rare analysis of assembly processes structuring a distinct group of cryptofauna, the Palaemonidae, in the Chagos Archipelago, a reef ecosystem under minimal direct human impacts in the central Indian Ocean. The Palaemonidae are a diverse group of Caridae (infraorder of shrimps) that inhabit many different niches on coral reefs and are of particular interest because of their varied habitat associations. Phylogenetic and trait diversity and phylogenetic signal were used to infer likely drivers of community structure. The mechanisms driving palaemonid community assembly and maintenance in the Chagos Archipelago showed distinct spatial patterns. At local scales, among coral colonies and among reefs fringing individual atolls, significant trait, and phylogenetic clustering patterns suggest environmental filtering may be a dominant ecological process driving Palaemonidae community structure, although local competition through equalizing mechanisms may also play a role in shaping the local community structure. Importantly, we also tested the robustness of phylogenetic diversity to changes in evolutionary information as multi‐gene phylogenies are resource intensive and for large families, such as the Palaemonidae, are often incomplete. These tests demonstrated a very modest impact on phylogenetic community structure, with only one of the four genes (PEPCK gene) in the phylogeny affecting phylogenetic diversity patterns, which provides useful information for future studies on large families with incomplete phylogenies. These findings contribute to our limited knowledge of this component of biodiversity in a marine locality as close to undisturbed by humans as can be found. It also provides a rare evaluation of phylogenetic diversity methods.
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Affiliation(s)
- Catherine E I Head
- Department of Zoology University of Oxford Oxford UK.,Conservation Programmes Zoological Society of London London UK.,Linacre College Oxford UK
| | - Heather Koldewey
- Conservation Programmes Zoological Society of London London UK.,Centre for Ecology & Conservation University of Exeter Cornwall Campus Cornwall UK
| | - Sandrine Pavoine
- Centre d'Ecologie et des Sciences de la Conservation (CESCO UMR7204) Sorbonne Universités, MNHN, CNRS, UPMC, CP51 Paris France
| | - Morgan S Pratchett
- ARC Centre of Excellence for Coral Reef Studies James Cook University Townsville QLD Australia
| | - Alex D Rogers
- Department of Zoology University of Oxford Oxford UK
| | | | - Michael B Bonsall
- Department of Zoology University of Oxford Oxford UK.,St Peter's College Oxford UK
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98
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Khalil MI, Gibson DJ, Baer SG, Willand JE. Functional diversity is more sensitive to biotic filters than phylogenetic diversity during community assembly. Ecosphere 2018. [DOI: 10.1002/ecs2.2164] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Affiliation(s)
- Mohammed I. Khalil
- Department of Plant Biology and Center for Ecology Southern Illinois University Carbondale 1263 Lincoln Drive Carbondale Illinois 62901 USA
| | - David J. Gibson
- Department of Plant Biology and Center for Ecology Southern Illinois University Carbondale 1263 Lincoln Drive Carbondale Illinois 62901 USA
| | - Sara G. Baer
- Department of Plant Biology and Center for Ecology Southern Illinois University Carbondale 1263 Lincoln Drive Carbondale Illinois 62901 USA
| | - Jason E. Willand
- Biology Department Missouri Southern State University 3950 Newman Road Joplin Missouri 64801 USA
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99
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100
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Tavares WC, Abi-Rezik P, Seuánez HN. Historical and ecological influence in the evolutionary diversification of external morphology of neotropical spiny rats (Echimyidae, Rodentia). J ZOOL SYST EVOL RES 2018. [DOI: 10.1111/jzs.12215] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- William Corrêa Tavares
- Laboratório de Mastozoologia; Departamento de Zoologia; CCS; Rio de Janeiro Brazil
- Departamento de Genética; CCS; Universidade Federal do Rio de Janeiro; Rio de Janeiro Brazil
- Programa de Genética; Instituto Nacional de Câncer; Rio de Janeiro Brazil
| | - Pedro Abi-Rezik
- Laboratório de Mastozoologia; Departamento de Zoologia; CCS; Rio de Janeiro Brazil
| | - Hector N. Seuánez
- Departamento de Genética; CCS; Universidade Federal do Rio de Janeiro; Rio de Janeiro Brazil
- Programa de Genética; Instituto Nacional de Câncer; Rio de Janeiro Brazil
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