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Kemppainen P, Schembri R, Momigliano P. Boundary Effects Cause False Signals of Range Expansions in Population Genomic Data. Mol Biol Evol 2024; 41:msae091. [PMID: 38743590 PMCID: PMC11135943 DOI: 10.1093/molbev/msae091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 04/25/2024] [Accepted: 05/01/2024] [Indexed: 05/16/2024] Open
Abstract
Studying range expansions is central for understanding genetic variation through space and time as well as for identifying refugia and biological invasions. Range expansions are characterized by serial founder events causing clines of decreasing genetic diversity away from the center of origin and asymmetries in the two-dimensional allele frequency spectra. These asymmetries, summarized by the directionality index (ψ), are sensitive to range expansions and persist for longer than clines in genetic diversity. In continuous and finite meta-populations, genetic drift tends to be stronger at the edges of the species distribution in equilibrium populations and populations undergoing range expansions alike. Such boundary effects are expected to affect geographic patterns in genetic diversity and ψ. Here we demonstrate that boundary effects cause high false positive rates in equilibrium meta-populations when testing for range expansions. In the simulations, the absolute value of ψ (|ψ|) in equilibrium data sets was proportional to the fixation index (FST). By fitting signatures of range expansions as a function of ɛ |ψ|/FST and geographic clines in ψ, strong evidence for range expansions could be detected in data from a recent rapid invasion of the cane toad, Rhinella marina, in Australia, but not in 28 previously published empirical data sets from Australian scincid lizards that were significant for the standard range expansion tests. Thus, while clinal variation in ψ is still the most sensitive statistic to range expansions, to detect true signatures of range expansions in natural populations, its magnitude needs to be considered in relation to the overall levels of genetic structuring in the data.
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Affiliation(s)
- Petri Kemppainen
- School of Biological Sciences and Swire Institute of Marine Science, Faculty of Science, The University of Hong Kong, Hong Kong, SAR, People's Republic of China
| | - Rhiannon Schembri
- School of Natural Sciences, Faculty of Science and Engineering, Macquarie University, Sydney, Australia
- Division of Ecology and Evolution, Research School of Biology, Australian National University, Canberra, Australia
| | - Paolo Momigliano
- School of Biological Sciences and Swire Institute of Marine Science, Faculty of Science, The University of Hong Kong, Hong Kong, SAR, People's Republic of China
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2
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Wu XL, Mu DP, Yang QS, Zhang Y, Li YC, Feijó A, Cheng JL, Wen ZX, Lu L, Xia L, Zhou ZJ, Qu YH, Ge DY. Comparative genomics of widespread and narrow-range white-bellied rats in the Niviventer niviventer species complex sheds light on invasive rodent success. Zool Res 2023; 44:1052-1063. [PMID: 37872006 PMCID: PMC10802109 DOI: 10.24272/j.issn.2095-8137.2022.519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 09/12/2023] [Indexed: 10/25/2023] Open
Abstract
Widespread species that inhabit diverse environments possess large population sizes and exhibit a high capacity for environmental adaptation, thus enabling range expansion. In contrast, narrow-range species are confined to restricted geographical areas and are ecologically adapted to narrow environmental conditions, thus limiting their ability to expand into novel environments. However, the genomic mechanisms underlying the differentiation between closely related species with varying distribution ranges remain poorly understood. The Niviventer niviventer species complex (NNSC), consisting of highly abundant wild rats in Southeast Asia and China, offers an excellent opportunity to investigate these questions due to the presence of both widespread and narrow-range species that are phylogenetically closely related. In the present study, we combined ecological niche modeling with phylogenetic analysis, which suggested that sister species cannot be both widespread and dominant within the same geographical region. Moreover, by assessing heterozygosity, linkage disequilibrium decay, and Tajima's D analysis, we found that widespread species exhibited higher genetic diversity than narrow-range species. In addition, by exploring the "genomic islands of speciation", we identified 13 genes in highly divergent regions that were shared by the two widespread species, distinguishing them from their narrow-range counterparts. Functional annotation analysis indicated that these genes are involved in nervous system development and regulation. The adaptive evolution of these genes likely played an important role in the speciation of these widespread species.
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Affiliation(s)
- Xin-Lai Wu
- Key Laboratory of Zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding, Hebei 071002, China
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beichen West Road, Chaoyang District, Beijing 100101, China
- Hebei Basic Science Center for Biotic Interaction, Institute of Life Science and Green Development, Hebei University, Baoding, Hebei 071002, China
| | - Dan-Ping Mu
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beichen West Road, Chaoyang District, Beijing 100101, China
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi, Xinjiang 830046, China
| | - Qi-Sen Yang
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beichen West Road, Chaoyang District, Beijing 100101, China
| | - Yu Zhang
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beichen West Road, Chaoyang District, Beijing 100101, China
| | - Yu-Chun Li
- Marine College, Shandong University, Weihai, Shandong 264209, China
| | - Anderson Feijó
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beichen West Road, Chaoyang District, Beijing 100101, China
| | - Ji-Long Cheng
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beichen West Road, Chaoyang District, Beijing 100101, China
| | - Zhi-Xin Wen
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beichen West Road, Chaoyang District, Beijing 100101, China
| | - Liang Lu
- State Key Laboratory for Infectious Diseases Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Lin Xia
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beichen West Road, Chaoyang District, Beijing 100101, China
| | - Zhi-Jun Zhou
- Key Laboratory of Zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding, Hebei 071002, China
- Hebei Basic Science Center for Biotic Interaction, Institute of Life Science and Green Development, Hebei University, Baoding, Hebei 071002, China. E-mail:
| | - Yan-Hua Qu
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beichen West Road, Chaoyang District, Beijing 100101, China. E-mail:
| | - De-Yan Ge
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beichen West Road, Chaoyang District, Beijing 100101, China. E-mail:
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3
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Domínguez JC, Alda F, Calero-Riestra M, Olea PP, Martínez-Padilla J, Herranz J, Oñate JJ, Santamaría A, Viñuela J, García JT. Genetic footprints of a rapid and large-scale range expansion: the case of cyclic common vole in Spain. Heredity (Edinb) 2023; 130:381-393. [PMID: 36966202 PMCID: PMC10238521 DOI: 10.1038/s41437-023-00613-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 03/13/2023] [Accepted: 03/14/2023] [Indexed: 03/27/2023] Open
Abstract
In the Anthropocene, many species are rapidly shifting their ranges in response to human-driven habitat modifications. Studying patterns and genetic signatures of range shifts helps to understand how species cope with environmental disturbances and predict future shifts in the face of global environmental change. We investigated the genetic signature of a contemporary wide-range expansion observed in the Iberian common vole Microtus arvalis asturianus shortly after a colonization event. We used mtDNA and microsatellite data to investigate patterns of genetic diversity, structure, demography, and gene flow across 57 localities covering the historical range of the species and the newly colonized area. The results showed a genetic footprint more compatible with a true range expansion (i.e. the colonization of previously unoccupied areas), than with a model of "colonization from within" (i.e. local expansions from small, unnoticed populations). Genetic diversity measures indicated that the source population was likely located at the NE of the historical range, with a declining gradient of genetic diversity towards the more recently invaded areas. At the expansion front, we observed the greatest gene flow and smallest pairwise differences between nearby localities. Both natural landscape features (rivers) and recent anthropogenic barriers (roads, railways) explained a large proportion of genetic variance among populations and had a significant impact on the colonization pathways used by voles.
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Affiliation(s)
- Julio C Domínguez
- IREC, Instituto de Investigación en Recursos Cinegéticos (CSIC-UCLM-JCCM), Ronda de Toledo 12, 13071, Ciudad Real, Spain.
- IPE, Pyrenean Institute of Ecology (CSIC), 22700, Avda. Nuestra Señora de la Victoria 16, Jaca, Spain.
| | - Fernando Alda
- Department of Biology, Geology and Environmental Science, University of Tennessee at Chattanooga, Chattanooga, TN, USA
| | - María Calero-Riestra
- IREC, Instituto de Investigación en Recursos Cinegéticos (CSIC-UCLM-JCCM), Ronda de Toledo 12, 13071, Ciudad Real, Spain
- IPE, Pyrenean Institute of Ecology (CSIC), 22700, Avda. Nuestra Señora de la Victoria 16, Jaca, Spain
| | - Pedro P Olea
- Terrestrial Ecology Group (TEG)-Departamento de Ecología, and Centro de Investigación en Biodiversidad y Cambio Global, Universidad Autónoma de Madrid, c/ Darwin, 2, 28049, Madrid, Spain
| | - Jesús Martínez-Padilla
- IPE, Pyrenean Institute of Ecology (CSIC), 22700, Avda. Nuestra Señora de la Victoria 16, Jaca, Spain
| | - Jesús Herranz
- Terrestrial Ecology Group (TEG)-Departamento de Ecología, and Centro de Investigación en Biodiversidad y Cambio Global, Universidad Autónoma de Madrid, c/ Darwin, 2, 28049, Madrid, Spain
| | - Juan José Oñate
- Terrestrial Ecology Group (TEG)-Departamento de Ecología, and Centro de Investigación en Biodiversidad y Cambio Global, Universidad Autónoma de Madrid, c/ Darwin, 2, 28049, Madrid, Spain
| | - Ana Santamaría
- Terrestrial Ecology Group (TEG)-Departamento de Ecología, and Centro de Investigación en Biodiversidad y Cambio Global, Universidad Autónoma de Madrid, c/ Darwin, 2, 28049, Madrid, Spain
| | - Javier Viñuela
- IREC, Instituto de Investigación en Recursos Cinegéticos (CSIC-UCLM-JCCM), Ronda de Toledo 12, 13071, Ciudad Real, Spain
| | - Jesús T García
- IREC, Instituto de Investigación en Recursos Cinegéticos (CSIC-UCLM-JCCM), Ronda de Toledo 12, 13071, Ciudad Real, Spain
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4
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Nati JJH, Halsey LG, Johnson PCD, Lindström J, Killen SS. Does aerobic scope influence geographical distribution of teleost fishes? CONSERVATION PHYSIOLOGY 2023; 11:coad012. [PMID: 37006338 PMCID: PMC10061159 DOI: 10.1093/conphys/coad012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 01/20/2023] [Accepted: 03/16/2023] [Indexed: 06/19/2023]
Abstract
Many abiotic and biotic factors are known to shape species' distributions, but we lack understanding of how innate physiological traits, such as aerobic scope (AS), may influence the latitudinal range of species. Based on theoretical assumptions, a positive link between AS and distribution range has been proposed, but there has been no broad comparative study across species to test this hypothesis. We collected metabolic rate data from the literature and performed a phylogenetically informed analysis to investigate the influence of AS on the current geographical distributions of 111 teleost fish species. Contrary to expectations, we found a negative relationship between absolute latitude range and thermal peak AS in temperate fishes. We found no evidence for an association between thermal range of AS and the range of latitudes occupied for 32 species. Our main results therefore contradict the prevailing theory of a positive link between AS and distribution range in fish.
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Affiliation(s)
- Julie J H Nati
- Corresponding author: School of Biodiversity, One Health and Veterinary, Graham Kerr Building, Glasgow G12 8QQ, UK.
| | - Lewis G Halsey
- Department of Life Sciences, University of Roehampton, Holybourne Avenue, London SW15 4JD, UK
| | - Paul C D Johnson
- School of Biodiversity, One Health and Veterinary, Graham Kerr Building, Glasgow G12 8QQ, UK
| | - Jan Lindström
- School of Biodiversity, One Health and Veterinary, Graham Kerr Building, Glasgow G12 8QQ, UK
| | - Shaun S Killen
- School of Biodiversity, One Health and Veterinary, Graham Kerr Building, Glasgow G12 8QQ, UK
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5
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McNichol BH, Russo SE. Plant Species' Capacity for Range Shifts at the Habitat and Geographic Scales: A Trade-Off-Based Framework. PLANTS (BASEL, SWITZERLAND) 2023; 12:1248. [PMID: 36986935 PMCID: PMC10056461 DOI: 10.3390/plants12061248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/18/2023] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
Climate change is causing rapid shifts in the abiotic and biotic environmental conditions experienced by plant populations, but we lack generalizable frameworks for predicting the consequences for species. These changes may cause individuals to become poorly matched to their environments, potentially inducing shifts in the distributions of populations and altering species' habitat and geographic ranges. We present a trade-off-based framework for understanding and predicting whether plant species may undergo range shifts, based on ecological strategies defined by functional trait variation. We define a species' capacity for undergoing range shifts as the product of its colonization ability and the ability to express a phenotype well-suited to the environment across life stages (phenotype-environment matching), which are both strongly influenced by a species' ecological strategy and unavoidable trade-offs in function. While numerous strategies may be successful in an environment, severe phenotype-environment mismatches result in habitat filtering: propagules reach a site but cannot establish there. Operating within individuals and populations, these processes will affect species' habitat ranges at small scales, and aggregated across populations, will determine whether species track climatic changes and undergo geographic range shifts. This trade-off-based framework can provide a conceptual basis for species distribution models that are generalizable across plant species, aiding in the prediction of shifts in plant species' ranges in response to climate change.
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Affiliation(s)
- Bailey H. McNichol
- School of Biological Sciences, University of Nebraska–Lincoln, 1101 T Street, 402 Manter Hall, Lincoln, NE 68588-0118, USA;
| | - Sabrina E. Russo
- School of Biological Sciences, University of Nebraska–Lincoln, 1101 T Street, 402 Manter Hall, Lincoln, NE 68588-0118, USA;
- Center for Plant Science Innovation, University of Nebraska–Lincoln, 1901 Vine Street, N300 Beadle Center, Lincoln, NE 68588-0118, USA
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6
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Paracampo A, Maia UM, Gomes VHF, de Sousa Miranda L, Giannini TC. New geographic record in eastern Amazon Forest and potential distribution of Amphidecta calliomma (Lepidoptera: Nymphalidae). Ecol Evol 2023; 13:e9762. [PMID: 36760705 PMCID: PMC9895319 DOI: 10.1002/ece3.9762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 01/05/2023] [Accepted: 01/09/2023] [Indexed: 02/05/2023] Open
Abstract
Amphidecta calliomma is a butterfly species that occurs in Colombia, Bolivia, Peru, Venezuela, Ecuador, Panama, and Brazil (in the states of Mato Grosso, Mato Grosso do Sul, Rondônia, and Pará). Here, we present a new occurrence of A. calliomma in the Carajás National Forest (Pará, eastern Amazon), expanding the known distribution of the species. We also provide species distribution model comparing the contribution of the new occurrence to species area of occurrence projections, supporting future field research. The projections reveal an expansion of area of occurrence for A. calliomma located mainly in the southeast portion of Amazon Forest. Despite its wide distribution, the small number of records of A. calliomma may indicate that the species has a low detectability in surveys. This study provides support for new surveys and reduces the knowledge gap about A. calliomma, thus supporting its conservation.
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Affiliation(s)
- Amanda Paracampo
- Instituto Tecnológico ValeBelémBrazil,Programa de Pós‐graduação em Zoologia da Universidade Federal do ParáBelémBrazil
| | | | - Vitor Hugo Freitas Gomes
- Instituto Tecnológico ValeBelémBrazil,Escola de Negócios Tecnologia e InovaçãoCentro Universitário do ParáBelémBrazil
| | | | - Tereza Cristina Giannini
- Instituto Tecnológico ValeBelémBrazil,Programa de Pós‐graduação em Zoologia da Universidade Federal do ParáBelémBrazil
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7
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Scherler P, Witczak S, Aebischer A, van Bergen V, Catitti B, Grüebler MU. Determinants of departure to natal dispersal across an elevational gradient in a long-lived raptor species. Ecol Evol 2023; 13:e9603. [PMID: 36694544 PMCID: PMC9842906 DOI: 10.1002/ece3.9603] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 11/19/2022] [Indexed: 01/18/2023] Open
Abstract
Attributes of natal habitat often affect early stages of natal dispersal. Thus, environmental gradients at mountain slopes are expected to result in gradients of dispersal behavior and to drive elevational differences in dispersal distances and settlement behavior. However, covariation of environmental factors across elevational gradients complicates the identification of mechanisms underlying the elevational patterns in dispersal behavior. Assuming a decreasing food availability with elevation, we conducted a food supplementation experiment of red kite (Milvus milvus) broods across an elevational gradient toward the upper range margin and we GPS-tagged nestlings to assess their start of dispersal. While considering timing of breeding and breeding density across elevation, this allowed disentangling effects of elevational food gradients from co-varying environmental gradients on the age at departure from the natal home range. We found an effect of food supplementation on age at departure, but no elevational gradient in the effect of food supplementation. Similarly, we found an effect of breeding density on departure age without an underlying elevational gradient. Supplementary-fed juveniles and females in high breeding densities departed at younger age than control juveniles and males in low breeding densities. We only found an elevational gradient in the timing of breeding. Late hatched juveniles, and thus individuals at high elevation, departed at earlier age compared to early hatched juveniles. We conclude that favorable natal food conditions, allow for a young departure age of juvenile red kites. We show that the elevational delay in breeding is compensated by premature departure resulting in an elevational gradient in departure age. Thus, elevational differences in dispersal behaviour likely arise due to climatic factors affecting timing of breeding. However, the results also suggest that spatial differences in food availability and breeding density affect dispersal behavior and that their large-scale gradients within the distributional range might result in differential natal dispersal patterns.
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Affiliation(s)
- Patrick Scherler
- Swiss Ornithological InstituteSempachSwitzerland,Department of Evolutionary Biology and Environmental StudiesUniversity of ZurichZurichSwitzerland
| | - Stephanie Witczak
- Swiss Ornithological InstituteSempachSwitzerland,Department of Evolutionary Biology and Environmental StudiesUniversity of ZurichZurichSwitzerland
| | | | | | - Benedetta Catitti
- Swiss Ornithological InstituteSempachSwitzerland,Department of Evolutionary Biology and Environmental StudiesUniversity of ZurichZurichSwitzerland
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8
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Wu Y, Brown A, Ricklefs RE. Host‐specific soil microbes contribute to habitat restriction of closely related oaks (
Quercus
spp.). Ecol Evol 2022; 12:e9614. [PMCID: PMC9745265 DOI: 10.1002/ece3.9614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 11/15/2022] [Accepted: 11/18/2022] [Indexed: 12/15/2022] Open
Affiliation(s)
- Yingtong Wu
- Department of Biology University of Missouri–St. Louis St. Louis Missouri USA
- Whitney R. Harris World Ecology Center University of Missouri–St. Louis St. Louis Missouri USA
| | - Alicia Brown
- Department of Biology University of Missouri–St. Louis St. Louis Missouri USA
- Whitney R. Harris World Ecology Center University of Missouri–St. Louis St. Louis Missouri USA
| | - Robert E. Ricklefs
- Department of Biology University of Missouri–St. Louis St. Louis Missouri USA
- Whitney R. Harris World Ecology Center University of Missouri–St. Louis St. Louis Missouri USA
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9
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Fontana NM, Pasailiuk MV, Pohribnyi O. Traditional ecological knowledge to traditional foods: The path to maintaining food sovereignty in Hutsulshchyna. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2022. [DOI: 10.3389/fsufs.2022.720757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The various ecosystems of the Carpathian Mountains spanning Europe, are a rich refuge for culturally important, endemic plant species as well as large carnivores. These biologically diverse landscapes are a principal source of subsistence to 16 million people, including various ethnographic groups. This paper focuses on a case study involving Hutsul communities, an ethnographic group of traditional pastoral highlanders, in the Southeastern Carpathian Mountains of Ukraine. Given ecosystem, climatic, and cultural challenges, especially the rise of illegal logging, commercial harvesting, increased frequencies of flooding, and now a war, Hutsul communities face extensive threats to maintaining socio-ecological resilience in the region. A contributing factor to the region's centuries-long resilience is traditional ecological knowledge upholding food sovereignty as seen through traditional foods derived from Carpathian Mountain ecosystems. Traditional ecological knowledge (TEK) is as a dynamic, generationally-held knowledge base, where language, gathering practices, landscape and culture inform livelihoods. In this article, we seek to answer the following series of questions within Hutsul communities: (1) What does TEK look like in the region? (2) What are the regional environmental challenges? (3) Given these challenges, what are coping mechanisms and adaptive strategies grounded in TEK, ensuring a resilient food sovereign system? Mixed methodologies guided by community-based participatory action research methods (CBPAR) between 2017 and 2019 provide a rich, context-driven perspective on regional TEK. Radiating out from the historical, cultural Hutsul capital, Verkhovyna, 40 experts (including knowledge holders, elders, foresters, and community members) were interviewed in 8 neighboring villages. We, along with Hutsul experts, explore the presence of traditional ecological knowledge (TEK) in Hutsulshchyna by identifying 108 culturally important species including wild plants (74 species), cultivated plants (23 species), fungi (9 species) and lichens (2 species); these species are gathered in 10 habitats with varying degrees of human interaction. We analyze species' presence in traditional foods in the past and present day, as well as contextualize regional environmental challenges impacting TEK practices, and responses to these challenges (coping mechanisms and adaptive strategies). Despite various regional challenges, we conclude that TEK provides a resilient foundation for supporting food sovereignty as seen through the presence of traditional foods.
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10
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Mohd MH. Revisiting discrepancies between stochastic agent-based and deterministic models. COMMUNITY ECOL 2022. [DOI: 10.1007/s42974-022-00118-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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Perrier A, Sánchez-Castro D, Willi Y. Environment dependence of the expression of mutational load and species' range limits. J Evol Biol 2022; 35:731-741. [PMID: 35290676 PMCID: PMC9314787 DOI: 10.1111/jeb.13997] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 02/10/2022] [Accepted: 02/21/2022] [Indexed: 12/21/2022]
Abstract
Theoretical and empirical research on the causes of species’ range limits suggest the contribution of several intrinsic and extrinsic factors, with potentially complex interactions among them. An intrinsic factor proposed by recent theory is mutational load increasing towards range edges because of genetic drift. Furthermore, environmental quality may decline towards range edges and enhance the expression of load. Here, we tested whether the expression of mutational load associated with range limits in the North American plant Arabidopsis lyrata was enhanced under stressful environmental conditions by comparing the performance of within‐ versus between‐population crosses at common garden sites across the species’ distribution and beyond. Heterosis, reflecting the expression of load, increased with heightened estimates of genomic load and with environmental stress caused by warming, but the interaction was not significant. We conclude that range‐edge populations suffer from a twofold genetic Allee effect caused by increased mutational load and stress‐dependent load linked to general heterozygote deficiency, but there is no synergistic effect between them.
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Affiliation(s)
- Antoine Perrier
- Department of Biology, University of Virginia, Charlottesville, Virginia, USA.,Department of Environmental Sciences, University of Basel, Basel, Switzerland
| | | | - Yvonne Willi
- Department of Environmental Sciences, University of Basel, Basel, Switzerland
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12
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Maier ARM, Cupșa D, Ferenți S, Cadar AM. New records of Darevskia praticola at the northern limit of its distribution range in Romania. HERPETOZOA 2022. [DOI: 10.3897/herpetozoa.35.e79892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
In the summer of 2021 we identified three new distribution localities of Darevskia praticola north of the Mureș River, and one locality south of the river. The habitats populated by D. praticola (broad-leaved forest with wet areas) and the altitude (175–245 m) of the new records are typical for this species. Nevertheless, D. praticola had not been recorded in 12 other localities with similar conditions from an area previously considered suitable for this species. Thus, D. praticola may be slowly expanding from a bridgehead north of the Mureș River, occupying new favorable habitats. Probably, D. praticola recently crossed the Mureș River, possibly on a bridge, or with the timber trucks which exploit the woods from both sides of the river.
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13
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Range expansion decreases the reproductive fitness of Gentiana officinalis (Gentianaceae). Sci Rep 2022; 12:2461. [PMID: 35165323 PMCID: PMC8844042 DOI: 10.1038/s41598-022-06406-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Accepted: 01/19/2022] [Indexed: 11/23/2022] Open
Abstract
Plants living at the edge of their range boundary tend to suffer an overall decline in their fitness, including growth and reproduction. However, the reproductive performance of plants in artificially expanded habitats is rarely investigated, although this type of study would provide a better understanding of range limitations and improved conservation of ex situ plants. In the current study, we transplanted a narrowly dispersed species of Gentiana officinalis H. Smith (Gentianaceae) from its natural area of distribution to two different elevations and natural elevation to comprehensively study its pollination biology, including flowering phenology and duration, floral display, reproductive allocation, pollinator activity, and seed production. The findings indicated that the starting point and endpoint of the flowering phenology of G. officinalis were earlier at the low elevation, but the peak flowering periods did not differ significantly between any of the experimental plots. When transplanted, the flowering duration, especially the female phase, was reduced; the floral display, including spray numbers, flower numbers, and flower size (length and width), decreased, especially at high elevations. Moreover, the pollen numbers and pollen-ovule ratio were decreased at both high and low elevations, although the ovule numbers showed no change, and aboveground reproductive allocation was decreased. Furthermore, pollinator richness and activity were significantly decreased, and the seed-set ratio decreased under both natural conditions and with supplemental pollination. Finally, more severe pollen limitation was found in transplanted individuals. These results indicated an overall decrease in reproductive fitness in plants living outside their original area of distribution when the geographical range of G. officinalis was expanded.
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14
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Häkkinen H, Petrovan SO, Sutherland WJ, Pettorelli N. Terrestrial or marine species distribution model: Why not both? A case study with seabirds. Ecol Evol 2021; 11:16634-16646. [PMID: 34938462 PMCID: PMC8668722 DOI: 10.1002/ece3.8272] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 09/20/2021] [Accepted: 10/05/2021] [Indexed: 11/23/2022] Open
Abstract
Species reliant on both the terrestrial and marine realms present a challenge for conventional species distribution models (SDMs). For such species, standard single-realm SDMs may omit key information that could result in decreased model accuracy and performance. Existing approaches to habitat suitability modeling typically do not effectively combine information from multiple realms; this methodological gap can ultimately hamper management efforts for groups such as seabirds, seals, and turtles. This study, for the first time, jointly incorporates both terrestrial information and marine information into a single species distribution model framework. We do this by sampling nearby marine conditions for a given terrestrial point and vice versa using parameters set by each species' mean maximum foraging distance and then use standard SDM methods to generate habitat suitability predictions; therefore, our method does not rely on post hoc combination of several different models. Using three seabird species with very different ecologies, we investigate whether this new multi-realm approach can improve our ability to identify suitable habitats for these species. Results show that incorporating terrestrial information into marine SDMs, or vice versa, generally improves model performance, sometimes drastically. However, there is considerable variability between species in the level of improvement as well as in the particular method that produces the most improvement. Our approach provides a repeatable and transparent method to combine information from multiple ecological realms in a single SDM framework. Important advantages over existing solutions include the opportunity to, firstly, easily combine terrestrial and marine information for species that forage large distances inland or out to sea and, secondly, consider interactions between terrestrial and marine variables.
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Affiliation(s)
- Henry Häkkinen
- Institute of ZoologyZoological Society of LondonLondonUK
| | | | - William J. Sutherland
- Department of ZoologyCambridge UniversityCambridgeUK
- BioRISC (Biosecurity Research Initiative at St Catharine’s)St Catharine’s CollegeCambridgeUK
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15
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Cicala F, Arteaga MC, Herzka SZ, Hereu CM, Jimenez-Rosenberg SPA, Saavedra-Flores A, Robles-Flores J, Gomez R, Batta-Lona PG, Galindo-Sánchez CE. Environmental conditions drive zooplankton community structure in the epipelagic oceanic water of the southern Gulf of Mexico: A molecular approach. Mol Ecol 2021; 31:546-561. [PMID: 34697853 DOI: 10.1111/mec.16251] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 10/14/2021] [Accepted: 10/22/2021] [Indexed: 01/04/2023]
Abstract
Zooplankton plays a pivotal role in sustaining the majority of marine ecosystems. The distribution patterns and diversity of zooplankton provide key information for understanding the functioning of these ecosystems. Nevertheless, due to the numerous cryptic and sibling species and the lack of diagnostic characteristics for early developmental stages, the identification of the global-to-local patterns of zooplankton biodiversity and biogeography remains challenging in different research fields. The spatial and temporal changes in the zooplankton community in the open waters of the southern Gulf of Mexico were assessed using metabarcoding analysis of the V9 region of 18S rRNA and mitochondrial cytochrome oxidase c subunit I (COI). Additionally, a multiscale analysis was implemented to evaluate which environmental predictors may explain the variability in the structure of the zooplankton community. Our findings suggest that the synergistic effects of dissolved oxygen concentration, temperature, and longitude (intended as a proxy for still unidentified predictors) may explain both spatial and temporal zooplankton variability even with low contribution. Furthermore, the zooplankton distribution probably reflects the coexistence of three heterogeneous ecoregions and a bio-physical partitioning of the studied area. Finally, some taxa were either exclusive or predominant with either 18S or COI markers. This may suggest that comprehensive assessments of the zooplankton community may be more accurately met by the use of multilocus approaches.
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Affiliation(s)
- Francesco Cicala
- Department of Marine Biotechnology, CICESE, Ensenada, Baja California, México
| | - María C Arteaga
- Department of Conservation Biology, CICESE, Ensenada, Baja California, México
| | - Sharon Z Herzka
- Department of Biological Oceanography, CICESE, Ensenada, Baja California, México
| | - Clara M Hereu
- Department of Marine Biotechnology, CICESE, Ensenada, Baja California, México
| | | | | | | | - Ricardo Gomez
- Department of Marine Biotechnology, CICESE, Ensenada, Baja California, México
| | - Paola G Batta-Lona
- Department of Marine Biotechnology, CICESE, Ensenada, Baja California, México
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16
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López-Delgado J, Meirmans PG. History or demography? Determining the drivers of genetic variation in North American plants. Mol Ecol 2021; 31:1951-1962. [PMID: 34662483 PMCID: PMC9543403 DOI: 10.1111/mec.16230] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 10/05/2021] [Accepted: 10/06/2021] [Indexed: 12/22/2022]
Abstract
Understanding the impact of historical and demographic processes on genetic variation is essential for devising conservation strategies and predicting responses to climate change. Recolonization after Pleistocene glaciations is expected to leave distinct genetic signatures, characterised by lower genetic diversity in previously glaciated regions. Populations’ positions within species ranges also shape genetic variation, following the central‐marginal paradigm dictating that peripheral populations are depauperate, sparse and isolated. However, the general applicability of these patterns and relative importance of historical and demographic factors remains unknown. Here, we analysed the distribution of genetic variation in 91 native species of North American plants by coupling microsatellite data and species distribution modelling. We tested the contributions of historical climatic shifts and the central‐marginal hypothesis on genetic diversity and structure on the whole data set and across subsets based on taxonomic groups and growth forms. Decreased diversity was found with increased distance from potential glacial refugia, coinciding with the expected make‐up of postglacially colonised localities. At the range periphery, lower genetic diversity, higher inbreeding levels and genetic differentiation were reported, following the assumptions of the central‐marginal hypothesis. History and demography were found to have approximately equal importance in shaping genetic variation.
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Affiliation(s)
- Julia López-Delgado
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands.,Institute of Biology, Leiden University, Leiden, The Netherlands
| | - Patrick G Meirmans
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
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17
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Chacón-Pacheco J, Ramos Madera C, Superina M. State of knowledge and updated distribution of the northern naked-tailed armadillo Cabassous centralis Miller, 1899 (Cingulata, Chlamyphoridae). MAMMALIA 2021. [DOI: 10.1515/mammalia-2021-0054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The northern naked-tailed armadillo (Cabassous centralis) is a small, poorly known armadillo species. We update the state of knowledge on this species, provide information on its current and potential distribution, and assess its conservation status and threats. We reviewed the existing literature and obtained georeferenced records from publications, online databases, and field researchers. A total of 174 documents mentioning C. centralis have been published between 1855 and 2019, about half of which (83) provided information on its distribution. The majority of publications came from Colombia. About 10% of publications included information about its ecology, concluding that it is a rare species that mainly occurs in areas with secondary vegetation. It seems to prefer complex habitats, as it is rarely found in fragmented or modified habitats. Consequently, it is possible that its ability to adapt to land use change is low. A total of 224 confirmed records allowed us to extend the species range to the northern Lacandona Forest in Mexico, the Andes of Colombia and southwards in Ecuador. Nevertheless, a distribution model suggests that the species could be even more widely distributed. C. centralis is listed in a threatened category in two countries, whereas more than half of the range countries have not assessed its conservation status. We consider its current global listing as Data Deficient to be appropriate, as many aspects of its ecology, reproduction, population size and trend, and the degree of impact of potential threats remain unknown.
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Affiliation(s)
- Julio Chacón-Pacheco
- Grupo de Biodiversidad Unicordoba, Universidad de Córdoba , Carrera 6 No. 76-103, Montería , Córdoba 230002 , Colombia
- Grupo de Investigación AMDAC , Institución Educativa José María Córdoba , Calle 29, No. 16b-43, Barrio San José, Montería , Córdoba 230002 , Colombia
| | - Camilo Ramos Madera
- Grupo de Biodiversidad Unicordoba, Universidad de Córdoba , Carrera 6 No. 76-103, Montería , Córdoba 230002 , Colombia
| | - Mariella Superina
- Laboratorio de Medicina y Endocrinología de la Fauna Silvestre , IMBECU, CCT CONICET Mendoza – UNCuyo , Casilla de Correos 855, 5500 Mendoza , Argentina
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18
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Zettlemoyer MA, Peterson ML. Does Phenological Plasticity Help or Hinder Range Shifts Under Climate Change? Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.689192] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Climate warming is predicted to shift species’ ranges as previously uninhabitable environments just beyond the leading range edges become suitable habitat and trailing range edges become increasingly unsuitable. Understanding which aspects of the environment and species traits mediate these range shifts is critical for understanding species’ possible redistributions under global change, yet we have a limited understanding of the ecological and evolutionary responses underlying population spread or extinction at species’ range edges. Within plant populations, shifts in flowering phenology have been one of the strongest and most consistent responses to climate change, and are likely to play an important role in mediating population dynamics within and beyond species’ ranges. However, the role of phenological shifts, and particularly phenological plasticity, in species’ range shifts remains relatively unstudied. Here, we synthesize literature on phenology, plasticity, and adaptation to suggest ways in which phenological responses to climate may vary across species’ ranges and review the empirical evidence for and against these hypotheses. We then outline how phenological plasticity could facilitate or hinder persistence and potential consequences of phenological plasticity in range expansions, including phenological cues, shifts in correlated traits, altered species interactions, and effects on gene flow. Finally, we suggest future avenues for research, such as characterizing reaction norms for phenology across a species’ range and in beyond-the-range transplant experiments. Given the prevalence and magnitude of phenological shifts, future work should carefully dissect its costs and benefits for population persistence, and incorporate phenological plasticity into models predicting species’ persistence and geographic range shifts under climate change.
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19
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Lloret J, Serrat A, Thordarson G, Helle K, Jadaud A, Bruno I, Ordines F, Sartor P, Carbonara P, Rätz HJ. The poor health of deep-water species in the context of fishing activity and a warming climate: will populations of Molva species rebuild or collapse? JOURNAL OF FISH BIOLOGY 2021; 98:1572-1584. [PMID: 32293032 DOI: 10.1111/jfb.14347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 03/24/2020] [Accepted: 04/09/2020] [Indexed: 06/11/2023]
Abstract
Many deep-water fish populations, being K-selected species, have little resilience to overexploitation and may be at serious risk of depletion as a consequence. Sea warming represents an additional threat. In this study, the condition, or health, of several populations of common ling (Molva molva), blue ling (Molva dypterygia) and Mediterranean or Spanish ling (Molva macrophthalma) inhabiting different areas in the North Atlantic and the Mediterranean was evaluated, to shed light on the challenges these deep-water species are facing in the context of fishing activity and a warming climate. The data on the condition of Molva populations which are analysed here have been complemented with data on abundance and, for the southernmost species (Mediterranean ling), with two other health indicators (parasitism and hepato-somatic index). Despite some exceptions (e.g., common ling in Icelandic waters), this study shows that the condition of many populations of Molva species in the northeastern Atlantic and the Mediterranean Sea has worsened, a trend which, in recent decades, has usually been found to be accompanied by a decline in their abundance. In addition, the poor health status of most populations of common ling, blue ling and Mediterranean ling considered in this analysis points to a lower sustainability of these populations in the future. Overall, the health status and abundance of Molva populations in the northeastern Atlantic and the Mediterranean suggest that only some populations located in the North Atlantic may be able to rebuild, whereas the populations in southern North Atlantic and the Mediterranean, which are probably most at risk from sea warming, are facing serious difficulties in doing so. In the context of fisheries and global warming, this study's results strongly indicate that management bodies need to consider the health status of many of the populations of Molva species, particularly in southern European waters, before implementing their decisions.
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Affiliation(s)
- Josep Lloret
- Institute of Aquatic Ecology, University of Girona, Girona, Catalonia, Spain
| | - Alba Serrat
- Institute of Aquatic Ecology, University of Girona, Girona, Catalonia, Spain
| | | | | | - Angelique Jadaud
- MARBEC, Ifremer, Université de Montpellier, CNRS, IRD, Sète, France
| | - Isabel Bruno
- Centro Oceanográfico de Vigo, Instituto Español de Oceanografía, Vigo, Spain
| | - Francesc Ordines
- Centre Oceanogràfic de Balears, Instituto Español de Oceanografía, Palma de Mallorca, Spain
| | - Paolo Sartor
- CIBM Consorzio per il Centro Internuniversitario di Biologia Marina ed Ecologia Applicata "G. Bacci", Livorno, Italy
| | - Pierluigi Carbonara
- COISPA Tecnologia & Ricerca, Stazione Sperimentale per lo Studio delle Risorse del Mare, Bari, Italy
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20
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Bradie JN, Bailey SA. A decision support tool to prioritize ballast water compliance monitoring by ranking risk of non‐indigenous species establishment. J Appl Ecol 2021. [DOI: 10.1111/1365-2664.13822] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Johanna N. Bradie
- Great Lakes Laboratory for Fisheries and Aquatic SciencesFisheries and Oceans Canada Burlington Ontario Canada
- Great Lakes Institute for Environmental ResearchUniversity of Windsor Windsor ONN9B 3P4Canada
| | - Sarah A. Bailey
- Great Lakes Laboratory for Fisheries and Aquatic SciencesFisheries and Oceans Canada Burlington Ontario Canada
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21
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Kass JM, Meenan SI, Tinoco N, Burneo SF, Anderson RP. Improving area of occupancy estimates for parapatric species using distribution models and support vector machines. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2021; 31:e02228. [PMID: 32970879 PMCID: PMC7816235 DOI: 10.1002/eap.2228] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 05/11/2020] [Accepted: 07/13/2020] [Indexed: 06/11/2023]
Abstract
As geographic range estimates for the IUCN Red List guide conservation actions, accuracy and ecological realism are crucial. IUCN's extent of occurrence (EOO) is the general region including the species' range, while area of occupancy (AOO) is the subset of EOO occupied by the species. Data-poor species with incomplete sampling present particular difficulties, but species distribution models (SDMs) can be used to predict suitable areas. Nevertheless, SDMs typically employ abiotic variables (i.e., climate) and do not explicitly account for biotic interactions that can impose range constraints. We sought to improve range estimates for data-poor, parapatric species by masking out areas under inferred competitive exclusion. We did so for two South American spiny pocket mice: Heteromys australis (Least Concern) and Heteromys teleus (Vulnerable due to especially poor sampling), whose ranges appear restricted by competition. For both species, we estimated EOO using SDMs and AOO with four approaches: occupied grid cells, abiotic SDM prediction, and this prediction masked by approximations of the areas occupied by each species' congener. We made the masks using support vector machines (SVMs) fit with two data types: occurrence coordinates alone; and coordinates along with SDM predictions of suitability. Given the uncertainty in calculating AOO for low-data species, we made estimates for the lower and upper bounds for AOO, but only make recommendations for H. teleus as its full known range was considered. The SVM approaches (especially the second one) had lower classification error and made more ecologically realistic delineations of the contact zone. For H. teleus, the lower AOO bound (a strongly biased underestimate) corresponded to Endangered (occupied grid cells), while the upper bounds (other approaches) led to Near Threatened. As we currently lack data to determine the species' true occupancy within the post-processed SDM prediction, we recommend that an updated listing for H. teleus include these bounds for AOO. This study advances methods for estimating the upper bound of AOO and highlights the need for better ways to produce unbiased estimates of lower bounds. More generally, the SVM approaches for post-processing SDM predictions hold promise for improving range estimates for other uses in biogeography and conservation.
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Affiliation(s)
- Jamie M. Kass
- Ph.D. Program in BiologyThe Graduate CenterCUNYNew YorkNew York10016USA
- Department of BiologyCity College of New York (CUNY)New YorkNew York10031USA
- Biodiversity and Biocomplexity UnitOkinawa Institute of Science and Technology Graduate UniversityTancha, Onna‐son, Kunigami‐gunOkinawa904‐0495Japan
| | - Sarah I. Meenan
- Department of BiologyCity College of New York (CUNY)New YorkNew York10031USA
| | - Nicolás Tinoco
- Museo de ZoologíaPontificia Universidad Católica del EcuadorAvenida 12 de Octubre, 1076 y Roca170517QuitoEcuador
| | - Santiago F. Burneo
- Museo de ZoologíaPontificia Universidad Católica del EcuadorAvenida 12 de Octubre, 1076 y Roca170517QuitoEcuador
| | - Robert P. Anderson
- Ph.D. Program in BiologyThe Graduate CenterCUNYNew YorkNew York10016USA
- Department of BiologyCity College of New York (CUNY)New YorkNew York10031USA
- Division of Vertebrate Zoology (Mammalogy)American Museum of Natural HistoryNew YorkNew York10024USA
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22
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Bernard AB, Marshall AJ. Assessing the state of knowledge of contemporary climate change and primates. Evol Anthropol 2020; 29:317-331. [DOI: 10.1002/evan.21874] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 03/05/2020] [Accepted: 11/09/2020] [Indexed: 11/06/2022]
Affiliation(s)
- Andrew B. Bernard
- Department of Anthropology University of Michigan Ann Arbor Michigan USA
| | - Andrew J. Marshall
- Department of Anthropology University of Michigan Ann Arbor Michigan USA
- Department of Ecology & Evolutionary Biology University of Michigan Ann Arbor Michigan USA
- Program in the Environment University of Michigan Ann Arbor Michigan USA
- School for Environment and Sustainability University of Michigan Ann Arbor Michigan USA
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23
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Huang SP, Lin YC, Lin TE, Richard R. Thermal physiology explains the elevational range for a lizard, Eutropis longicaudata, in Taiwan. J Therm Biol 2020; 93:102730. [DOI: 10.1016/j.jtherbio.2020.102730] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 08/14/2020] [Accepted: 09/13/2020] [Indexed: 11/26/2022]
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24
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Perrier A, Sánchez-Castro D, Willi Y. Expressed mutational load increases toward the edge of a species' geographic range. Evolution 2020; 74:1711-1723. [PMID: 32538471 DOI: 10.1111/evo.14042] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 05/26/2020] [Accepted: 06/05/2020] [Indexed: 12/14/2022]
Abstract
There is no general explanation for why species have restricted geographic distributions. One hypothesis posits that range expansion or increasing scarcity of suitable habitat results in accumulation of mutational load due to enhanced genetic drift, which constrains population performance toward range limits and further expansion. We tested this hypothesis in the North American plant, Arabidopsis lyrata. We experimentally assessed mutational load by crossing plants of 20 populations from across the entire species range and by raising the offspring of within- and between-population crosses at five common garden sites within and beyond the range. Offspring performance was tracked over three growing seasons. The heterosis effect, depicting expressed mutational load, was increased in populations with heightened genomic estimates of load, longer expansion distance or long-term isolation, and a selfing mating system. The decline in performance of within-population crosses amounted to 80%. Mutation accumulation due to past range expansion and long-term isolation of populations in the area of range margins is therefore a strong determinant of population-mean performance, and the magnitude of effect may be sufficient to cause range limits.
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Affiliation(s)
- Antoine Perrier
- Department of Environmental Sciences, University of Basel, Basel, 4056, Switzerland
| | - Darío Sánchez-Castro
- Department of Environmental Sciences, University of Basel, Basel, 4056, Switzerland
| | - Yvonne Willi
- Department of Environmental Sciences, University of Basel, Basel, 4056, Switzerland
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25
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Johnson DJ, Stahlschmidt ZR. City limits: Heat tolerance is influenced by body size and hydration state in an urban ant community. Ecol Evol 2020; 10:4944-4955. [PMID: 32551072 PMCID: PMC7297767 DOI: 10.1002/ece3.6247] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 03/16/2020] [Accepted: 03/17/2020] [Indexed: 11/25/2022] Open
Abstract
Cities are rapidly expanding, and global warming is intensified in urban environments due to the urban heat island effect. Therefore, urban animals may be particularly susceptible to warming associated with ongoing climate change. We used a comparative and manipulative approach to test three related hypotheses about the determinants of heat tolerance or critical thermal maximum (CT max) in urban ants-specifically, that (a) body size, (b) hydration status, and (c) chosen microenvironments influence CT max. We further tested a fourth hypothesis that native species are particularly physiologically vulnerable in urban environments. We manipulated water access and determined CT max for 11 species common to cities in California's Central Valley that exhibit nearly 300-fold variation in body size. There was a moderate phylogenetic signal influencing CT max, and inter (but not intra) specific variation in body size influenced CT max where larger species had higher CT max. The sensitivity of ants' CT max to water availability exhibited species-specific thresholds where short-term water limitation (8 hr) reduced CT max and body water content in some species while longer-term water limitation (32 hr) was required to reduce these traits in other species. However, CT max was not related to the temperatures chosen by ants during activity. Further, we found support for our fourth hypothesis because CT max and estimates of thermal safety margin in native species were more sensitive to water availability relative to non-native species. In sum, we provide evidence of links between heat tolerance and water availability, which will become critically important in an increasingly warm, dry, and urbanized world that others have shown may be selecting for smaller (not larger) body size.
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Affiliation(s)
- Dustin J. Johnson
- Department of Biological SciencesUniversity of the PacificStocktonCalifornia
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26
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Wu Y, Zhang M, Li Z, Xu J, Beardall J. Differential Responses of Growth and Photochemical Performance of Marine Diatoms to Ocean Warming and High Light Irradiance. Photochem Photobiol 2020; 96:1074-1082. [DOI: 10.1111/php.13268] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 03/20/2020] [Indexed: 01/24/2023]
Affiliation(s)
- Yaping Wu
- College of Marine Life and Fisheries Jiangsu Ocean University Lianyungang China
- Co‐Innovation Center of Jiangsu Marine Bio‐industry Technology Jiangsu Ocean University Lianyungang China
| | - Mengjuan Zhang
- College of Marine Life and Fisheries Jiangsu Ocean University Lianyungang China
| | - Zhenzhen Li
- The Swire Institute of Marine Science and School of Biological Sciences The University of Hong Kong Hong Kong China
| | - Juntian Xu
- College of Marine Life and Fisheries Jiangsu Ocean University Lianyungang China
- Co‐Innovation Center of Jiangsu Marine Bio‐industry Technology Jiangsu Ocean University Lianyungang China
| | - John Beardall
- School of Biological Sciences Monash University Clayton Vic. Australia
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27
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Furlan EM, Gruber B, Attard CRM, Wager RNE, Kerezsy A, Faulks LK, Beheregaray LB, Unmack PJ. Assessing the benefits and risks of translocations in depauperate species: A theoretical framework with an empirical validation. J Appl Ecol 2020. [DOI: 10.1111/1365-2664.13581] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Elise M. Furlan
- Institute for Applied Ecology University of Canberra Canberra ACT Australia
| | - Bernd Gruber
- Institute for Applied Ecology University of Canberra Canberra ACT Australia
| | - Catherine R. M. Attard
- Molecular Ecology Laboratory College of Science and Engineering Flinders University Adelaide SA Australia
| | - Robert N. E. Wager
- Bush Heritage Australia Melbourne Vic. Australia
- “Rockatoo” Esk Qld Australia
| | - Adam Kerezsy
- Bush Heritage Australia Melbourne Vic. Australia
- DrFishContracting Lake Cargelligo NSW Australia
| | - Leanne K. Faulks
- Sugadaira Research Station Mountain Science Center University of Tsukuba Tsukuba Japan
| | - Luciano B. Beheregaray
- Molecular Ecology Laboratory College of Science and Engineering Flinders University Adelaide SA Australia
| | - Peter J. Unmack
- Institute for Applied Ecology University of Canberra Canberra ACT Australia
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28
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Negri AP, Smith RA, King O, Frangos J, Warne MSJ, Uthicke S. Adjusting Tropical Marine Water Quality Guideline Values for Elevated Ocean Temperatures. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:1102-1110. [PMID: 31845576 DOI: 10.1021/acs.est.9b05961] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Increased frequency of summer heatwaves and poor water quality are two of the most prevalent and severe pressures faced by coral reefs. While these pressures often co-occur, their potential risks to tropical marine species are usually considered independently. Here, we extended the application of multisubstance-Potentially Affected Fraction (ms-PAF) to a nonchemical stressor, elevated sea surface temperature. We then applied this method to calculate climate-adjusted water quality guideline values (GVs) for two reference toxicants, copper and the herbicide diuron, for tropical marine species. First, we developed a species sensitivity distribution (SSD) for thermal stress based on published experimental data for 41 tropical benthic marine species using methods adapted from water quality GV derivation. This enabled quantitative predictions of community effects as temperatures exceeded acclimation values. The resulting protective temperature values (PTx) were similar to temperatures known to initiate coral bleaching and are therefore relevant for application in multistressor risk assessments. The extended ms-PAF method enabled the adjustment of current water quality GVs to account for thermal stress events. This approach could be applied to other ecosystems and other non-contaminant stressors (e.g., sediment, low salinity, anoxia, and ocean acidification), offering an alternative approach for deriving environmental GVs, reporting and assessing the risk posed by multiple stressors.
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Affiliation(s)
- Andrew P Negri
- Australian Institute of Marine Science , Townsville , Queensland 4810 , Australia
| | - Rachael A Smith
- Office of the Great Barrier Reef, Queensland Department of Environment and Science , Brisbane , Queensland 4001 , Australia
| | - Olivia King
- Australian Rivers Institute-Coast and Estuaries, School of Environment and Science , Griffith University , Gold Coast , Queensland 4215 , Australia
| | - Julius Frangos
- Office of the Great Barrier Reef, Queensland Department of Environment and Science , Brisbane , Queensland 4001 , Australia
| | - Michael St J Warne
- School of Earth and Environmental Sciences, Faculty of Science , University of Queensland , St. Lucia , Queensland 4072 , Australia
- Department of Environment and Science , Brisbane , Queensland 4001 , Australia
- Centre for Agroecology, Water and Resilience , Coventry University , Coventry , West Midlands CV1 5FB , U.K
| | - Sven Uthicke
- Australian Institute of Marine Science , Townsville , Queensland 4810 , Australia
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Simon JC, Mahéo F, Mieuzet L, Buchard C, Gauthier JP, Maurice D, Bonhomme J, Outreman Y, Hullé M. Life on the Edge: Ecological Genetics of a High Arctic Insect Species and Its Circumpolar Counterpart. INSECTS 2019; 10:insects10120427. [PMID: 31779157 PMCID: PMC6955800 DOI: 10.3390/insects10120427] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 11/21/2019] [Accepted: 11/22/2019] [Indexed: 01/13/2023]
Abstract
Arctic ecosystems are subjected to strong environmental constraints that prevent both the colonization and development of many organisms. In Svalbard, few aphid species have established permanent populations. These high arctic aphid species have developed peculiar life-history traits such as shortened life cycles and reduced dispersal capacities. Here, we present data on the distribution and population genetics of Acyrthosiphon svalbardicum in Spitsbergen, the main island of the Svalbard archipelago, and compared its genetic structure with that of its close relative Acyrthosiphon brevicorne, sampled in the top of Scandinavian mainland. We found that A. svalbardicum is common but heterogeneously distributed along the west coast of Spitsbergen. We recorded this species up to 79°12’, which constitutes the northernmost location for any aphid. Genetic structure examined using microsatellite markers showed more pronounced spatial differentiation in A. svalbardicum than in A. brevicorne populations, presumably due to reduced dispersal capacities in the former species. Although populations of A. brevicorne and A. svalbardicum were well-delineated at nuclear loci, they shared similar cytoplasmic DNA haplotypes as revealed by sequence analysis of two DNA barcodes. These results raise questions about whether these two taxa are different species, and the colonization sources and history of the Svalbard archipelago by A. svalbardicum.
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Affiliation(s)
- Jean-Christophe Simon
- INRA, IGEPP UMR 1349 INRA/Agrocampus Ouest/Université Rennes 1, Domaine de la Motte 35650 Le Rheu and 65, rue de Saint Brieuc, 35000 Rennes, France; (F.M.); (L.M.); (C.B.); (J.-P.G.); (J.B.); (Y.O.); (M.H.)
- Correspondence: ; Tel.: +33-223-485-154
| | - Frédérique Mahéo
- INRA, IGEPP UMR 1349 INRA/Agrocampus Ouest/Université Rennes 1, Domaine de la Motte 35650 Le Rheu and 65, rue de Saint Brieuc, 35000 Rennes, France; (F.M.); (L.M.); (C.B.); (J.-P.G.); (J.B.); (Y.O.); (M.H.)
| | - Lucie Mieuzet
- INRA, IGEPP UMR 1349 INRA/Agrocampus Ouest/Université Rennes 1, Domaine de la Motte 35650 Le Rheu and 65, rue de Saint Brieuc, 35000 Rennes, France; (F.M.); (L.M.); (C.B.); (J.-P.G.); (J.B.); (Y.O.); (M.H.)
| | - Christelle Buchard
- INRA, IGEPP UMR 1349 INRA/Agrocampus Ouest/Université Rennes 1, Domaine de la Motte 35650 Le Rheu and 65, rue de Saint Brieuc, 35000 Rennes, France; (F.M.); (L.M.); (C.B.); (J.-P.G.); (J.B.); (Y.O.); (M.H.)
| | - Jean-Pierre Gauthier
- INRA, IGEPP UMR 1349 INRA/Agrocampus Ouest/Université Rennes 1, Domaine de la Motte 35650 Le Rheu and 65, rue de Saint Brieuc, 35000 Rennes, France; (F.M.); (L.M.); (C.B.); (J.-P.G.); (J.B.); (Y.O.); (M.H.)
| | - Damien Maurice
- INRA, UMR EEF INRA/Université de Nancy, 54282 Champenoux, France;
| | - Joël Bonhomme
- INRA, IGEPP UMR 1349 INRA/Agrocampus Ouest/Université Rennes 1, Domaine de la Motte 35650 Le Rheu and 65, rue de Saint Brieuc, 35000 Rennes, France; (F.M.); (L.M.); (C.B.); (J.-P.G.); (J.B.); (Y.O.); (M.H.)
| | - Yannick Outreman
- INRA, IGEPP UMR 1349 INRA/Agrocampus Ouest/Université Rennes 1, Domaine de la Motte 35650 Le Rheu and 65, rue de Saint Brieuc, 35000 Rennes, France; (F.M.); (L.M.); (C.B.); (J.-P.G.); (J.B.); (Y.O.); (M.H.)
| | - Maurice Hullé
- INRA, IGEPP UMR 1349 INRA/Agrocampus Ouest/Université Rennes 1, Domaine de la Motte 35650 Le Rheu and 65, rue de Saint Brieuc, 35000 Rennes, France; (F.M.); (L.M.); (C.B.); (J.-P.G.); (J.B.); (Y.O.); (M.H.)
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Petford MA, van Huyssteen R, Alexander GJ. Influences of ecology and climate on the distribution of restricted, rupicolous reptiles in a biodiverse hotspot. AFR J HERPETOL 2019. [DOI: 10.1080/21564574.2019.1681524] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- MA Petford
- School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Soutpansberg Centre for Biodiversity and Conservation, Medike Nature Reserve, South Africa
| | - R van Huyssteen
- Soutpansberg Centre for Biodiversity and Conservation, Medike Nature Reserve, South Africa
| | - GJ Alexander
- School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, Johannesburg, South Africa
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31
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Carrer M, Pellizzari E, Prendin AL, Pividori M, Brunetti M. Winter precipitation - not summer temperature - is still the main driver for Alpine shrub growth. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 682:171-179. [PMID: 31112818 DOI: 10.1016/j.scitotenv.2019.05.152] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 05/10/2019] [Accepted: 05/11/2019] [Indexed: 06/09/2023]
Abstract
High latitude and altitude environments are universally recognized as particularly sensitive to environmental changes and the current climate warming is inducing remarkable transformations on vegetation assemblage in these temperature-limited regions. However, next to the wealth of studies describing the effect of rising growing season temperature on trees, much less is known about the concurrent effects of precipitation and snowpack dynamics on the other key component of alpine vegetation represented by prostrate life forms. Selecting the most widespread shrub species in the North Hemisphere, we assembled a monospecific (Juniperus communis L.) network of 7 sites overarching the European Alps, measured the annual growth on >330 individuals and assessed the climate-growth associations for the last century (1910-2010) adopting a new model estimating the solid fraction of precipitation from unique highly-resolved daily climate records. Despite the high space-time variability of the yearly precipitation amount and distribution across the region, our analysis found a prominent, consistent and negative role of winter precipitation for shrub growth. Moreover, this crucial role of snow is maintained even in recent years, despite the persistent and significant warming trend. The presence of this underrated key factor for Alpine long-lived vegetation will require a thorough consideration. For the prostrate life form, not only temperature but also the solid fraction of winter precipitation should be considered to improve the projections of future growth trajectories.
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Affiliation(s)
- Marco Carrer
- TeSAF Department, Università degli Studi di Padova, Padova, Italy.
| | - Elena Pellizzari
- TeSAF Department, Università degli Studi di Padova, Padova, Italy
| | | | - Mario Pividori
- TeSAF Department, Università degli Studi di Padova, Padova, Italy
| | - Michele Brunetti
- Institute of Atmospheric Sciences and Climate, National Research Council, Bologna, Italy
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32
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Chan SF, Shih WK, Chang AY, Shen SF, Chen IC. Contrasting forms of competition set elevational range limits of species. Ecol Lett 2019; 22:1668-1679. [PMID: 31347240 DOI: 10.1111/ele.13342] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 04/06/2019] [Accepted: 06/18/2019] [Indexed: 11/29/2022]
Abstract
How abiotic and biotic factors constrain distribution limits at the harsh and benign edges of species ranges is hotly debated, partly because macroecological experiments testing the proximate causes of distribution limits are scarce. It has long been recognized - at least since Darwin's On the Origin of Species - that a harsh climate strengthens competition and thus sets species range limits. Using thorough field manipulations along a large elevation gradient, we show the mechanisms by which temperature determines competition type, resulting in a transition from interference to exploitative competition from the lower to the upper elevation limits in burying beetles (Nicrophorus nepalensis). This transition is an example of Darwin's classic hypothesis that benign climates favor direct competition for highly accessible resources while harsh climates result in competition through resources of high rivalry. We propose that identifying the properties of these key resources will provide a more predictive framework to understand the interplay between biotic and abiotic factors in determining geographic range limits.
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Affiliation(s)
- Shih-Fan Chan
- Biodiversity Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Wei-Kai Shih
- Department of Life Sciences, National Cheng Kung University, Tainan, 70101, Taiwan
| | - An-Yu Chang
- Biodiversity Research Center, Academia Sinica, Taipei, 11529, Taiwan.,Institute of Ecology and Evolutionary Biology, National Taiwan University, Biodiversity Research Center, Academia Sinica, Taipei, 10617, Taipei, 11529, Taiwan
| | - Sheng-Feng Shen
- Biodiversity Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - I-Ching Chen
- Department of Life Sciences, National Cheng Kung University, Tainan, 70101, Taiwan
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33
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LaRue EA, Emery NC, Briley L, Christie MR. Geographic variation in dispersal distance facilitates range expansion of a lake shore plant in response to climate change. DIVERS DISTRIB 2019. [DOI: 10.1111/ddi.12951] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Affiliation(s)
- Elizabeth A. LaRue
- Department of Biological Sciences Purdue University West Lafayette Indiana
| | - Nancy C. Emery
- Department of Ecology and Evolutionary Biology University of Colorado Boulder Boulder Colorado
| | - Laura Briley
- Great Lakes Integrated Sciences and Assessments University of Michigan Ann Arbor Michigan
| | - Mark R. Christie
- Department of Biological Sciences Purdue University West Lafayette Indiana
- Department of Forestry and Natural Resources West Lafayette Indiana
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34
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Luo B, Santana SE, Pang Y, Wang M, Xiao Y, Feng J. Wing morphology predicts geographic range size in vespertilionid bats. Sci Rep 2019; 9:4526. [PMID: 30872741 PMCID: PMC6418303 DOI: 10.1038/s41598-019-41125-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 02/28/2019] [Indexed: 12/18/2022] Open
Abstract
Why some species are widespread across continents while others are confined geographically remains an open question in ecology and biogeography. Previous research has attempted to explain interspecific variation in geographic range size based on differences in dispersal ability. However, the relationship between dispersal ability and geographic range size remains uncertain, particularly in mammals. The goal of this study is to test whether geographic range size can be predicted by dispersal capacity among vespertilionid bats within a phylogenetic comparative framework. We integrated a large dataset on range area, longitudinal extent, wing morphology (a proxy for dispersal ability), migratory habit, and biogeographic realm across 126 vespertilionid bat species. We used phylogenetic regressions to disentangle the associations between these predictor factors and species range size while controlling for the effects of migration and biogeographic realm. Our analyses revealed that bat species with higher wing loading exhibit larger distribution ranges than those with lower wing loading, and that the size of geographic ranges was associated with wing aspect ratio in bats. These results highlight the relationship between wing morphology and range size in flying mammals, and suggest a role of dispersal capacity in shaping species’ geographic distributions.
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Affiliation(s)
- Bo Luo
- Key Laboratory of Southwest China Wildlife Resources Conservation of Ministry of Education, China West Normal University, 1 Shida Road, Nanchong, 637002, China. .,Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, 2555 Jingyue Street, Changchun, 130117, China.
| | - Sharlene E Santana
- Department of Biology and Burke Museum of Natural History and Culture, University of Washington, Seattle, WA, 98195, USA
| | - Yulan Pang
- Key Laboratory of Southwest China Wildlife Resources Conservation of Ministry of Education, China West Normal University, 1 Shida Road, Nanchong, 637002, China
| | - Man Wang
- Key Laboratory of Southwest China Wildlife Resources Conservation of Ministry of Education, China West Normal University, 1 Shida Road, Nanchong, 637002, China
| | - Yanhong Xiao
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, 2555 Jingyue Street, Changchun, 130117, China
| | - Jiang Feng
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, 2555 Jingyue Street, Changchun, 130117, China. .,College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130117, China.
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35
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Anderegg LDL, HilleRisLambers J. Local range boundaries vs. large-scale trade-offs: climatic and competitive constraints on tree growth. Ecol Lett 2019; 22:787-796. [PMID: 30793454 DOI: 10.1111/ele.13236] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 09/28/2018] [Accepted: 01/11/2019] [Indexed: 01/22/2023]
Abstract
Species often respond to human-caused climate change by shifting where they occur on the landscape. To anticipate these shifts, we need to understand the forces that determine where species currently occur. We tested whether a long-hypothesised trade-off between climate and competitive constraints explains where tree species grow on mountain slopes. Using tree rings, we reconstructed growth sensitivity to climate and competition in range centre and range margin tree populations in three climatically distinct regions. We found that climate often constrains growth at environmentally harsh elevational range boundaries, and that climatic and competitive constraints trade-off at large spatial scales. However, there was less evidence that competition consistently constrained growth at benign elevational range boundaries; thus, local-scale climate-competition trade-offs were infrequent. Our work underscores the difficulty of predicting local-scale range dynamics, but suggests that the constraints on tree performance at a large-scale (e.g. latitudinal) may be predicted from ecological theory.
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Affiliation(s)
- Leander D L Anderegg
- Department of Biology, University of Washington, Box 351800, Seattle, WA, 98195, USA.,Department of Global Ecology, Carnegie Institution for Science, 260 Panama Street, Stanford, CA, 94305, USA.,Department of Integrative Biology, University of California Berkeley, 4007 Valley Life Sciences Building, Berkeley, CA, 94720, USA
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36
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Han GD, Cartwright SR, Ganmanee M, Chan BKK, Adzis KAA, Hutchinson N, Wang J, Hui TY, Williams GA, Dong YW. High thermal stress responses of Echinolittorina snails at their range edge predict population vulnerability to future warming. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 647:763-771. [PMID: 30092533 DOI: 10.1016/j.scitotenv.2018.08.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Revised: 07/26/2018] [Accepted: 08/01/2018] [Indexed: 06/08/2023]
Abstract
Populations at the edge of their species' distribution ranges are typically living at the physiological extreme of the environmental conditions they can tolerate. As a species' response to global change is likely to be largely determined by its physiological performance, subsequent changes in environmental conditions can profoundly influence populations at range edges, resulting in range extensions or retractions. To understand the differential physiological performance among populations at their distribution range edge and center, we measured levels of mRNA for heat shock protein 70 (hsp70) as an indicator of temperature sensitivity in two high-shore littorinid snails, Echinolittorina malaccana and E. radiata, between 1°N to 36°N along the NW Pacific coast. These Echinolittorina snails are extremely heat-tolerant and frequently experience environmental temperatures in excess of 55 °C when emersed. It was assumed that animals exhibiting high temperature sensitivity will synthesize higher levels of mRNA, which will thus lead to higher energetic costs for thermal defense. Populations showed significant geographic variation in temperature sensitivity along their range. Snails at the northern range edge of E. malaccana and southern range edge of E. radiata exhibited higher levels of hsp70 expression than individuals collected from populations at the center of their respective ranges. The high levels of hsp70 mRNA in populations at the edge of a species' distribution range may serve as an adaptive response to locally stressful thermal environments, suggesting populations at the edge of their distribution range are potentially more sensitive to future global warming.
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Affiliation(s)
- Guo-Dong Han
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Stephen R Cartwright
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong Special Administrative Region
| | - Monthon Ganmanee
- Faculty of Agricultural Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand
| | - Benny K K Chan
- Research Centre for Biodiversity, Academia Sinica, Taipei 115, Taiwan
| | - Kee A A Adzis
- Marine Ecosystem Research Center, National University of Malaysia, 43600 UKM Bangi, Malaysia; SEAlutions Sdn Bhd, B-11-1, Viva building, No 378, Jalan Ipoh, 51200 Kuala Lumpur, Malaysia
| | - Neil Hutchinson
- TropWATER-Centre for Tropical Water and Aquatic Ecosystem Research, James Cook University Singapore, 149 Sims Drive, Singapore 387380, Singapore
| | - Jie Wang
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Tommy Y Hui
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong Special Administrative Region
| | - Gray A Williams
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong Special Administrative Region.
| | - Yun-Wei Dong
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China.
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37
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Hillard EM, Edmund AC, Crawford JC, Nielsen CK, Schauber EM, Groninger JW. Winter snow cover increases swamp rabbit (Sylvilagus aquaticus) mortality at the northern extent of their range. Mamm Biol 2018. [DOI: 10.1016/j.mambio.2018.09.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Prieto‐Ramirez AM, Pe’er G, Rödder D, Henle K. Realized niche and microhabitat selection of the eastern green lizard ( Lacerta viridis) at the core and periphery of its distribution range. Ecol Evol 2018; 8:11322-11336. [PMID: 30519446 PMCID: PMC6262924 DOI: 10.1002/ece3.4612] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 08/16/2018] [Accepted: 09/19/2018] [Indexed: 12/05/2022] Open
Abstract
The available range of habitats and suitable abiotic conditions like temperature and radiation tends to be narrower toward the periphery of the distribution range of species. Peripheral populations of generalist species could then be more specialized and have a smaller and differentiated realized niche (habitat niche in our study) compared to populations at the core. Likewise, patterns of microhabitat selection can differ between periphery and core. In our study, we compared niche size and microhabitat selection among core (Bulgaria) and northern peripheral (Germany, Czech Republic) populations of Lacerta viridis and estimated niche differentiation among regions. We collected data on vegetation structure and abiotic parameters at the microhabitat scale in each region. In order to compare niche size among regions and estimate niche differentiation, we built multidimensional niche hypervolumes. We applied generalized linear mixed models and model averaging, accounting for spatial autocorrelation when necessary, to analyze microhabitat differences among regions and microhabitat selection in each region. Peripheral populations were more specialized, having a smaller niche than core ones, and their niche differed from that in the core (Sørensen overlap in all comparisons <0.3). Microhabitats at the periphery had lower radiation and soil compaction and less structured vegetation. Microhabitat selection at the core depended solely on abiotic parameters, while at the periphery it was defined by only vegetation structure (Czech Republic) or a combination of both, vegetation structure, and abiotic factors (Germany). Thus, peripheral populations seem to compensate for overall harsher climatic conditions by responding to different parameters of the microhabitat compared to core populations. We suggest specific conservation measures for L. virids in each studied region and point out the general implications of a higher specialization degree of peripheral populations in relation to climate change and habitat fragmentation.
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Affiliation(s)
- Ana M. Prieto‐Ramirez
- Department of Conservation BiologyHelmholtz Center for Environmental Research UFZLeipzigGermany
- Department of HerpetologyZoological Research Museum Alexander König ZFMKBonnGermany
| | - Guy Pe’er
- Department of Economics and Department of Ecosystem ServicesUFZ LeipzigLeipzigGermany
- German Center for Integrative Biodiversity (iDiv)Halle‐Jena‐LeipzigLeipzigGermany
- Universität LeipzigLeipzigGermany
| | - Dennis Rödder
- Department of HerpetologyZoological Research Museum Alexander König ZFMKBonnGermany
| | - Klaus Henle
- Department of Conservation BiologyHelmholtz Center for Environmental Research UFZLeipzigGermany
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Xu Y, Luo Z, Gao S, Zhang D. Pollination niche availability facilitates colonization of Guettarda speciosa with heteromorphic self-incompatibility on oceanic islands. Sci Rep 2018; 8:13765. [PMID: 30213996 PMCID: PMC6137094 DOI: 10.1038/s41598-018-32143-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 06/22/2018] [Indexed: 11/21/2022] Open
Abstract
Obligate out-breeding plants are considered relatively disadvantageous comparing with self-breeding plants when colonizing oceanic islets following long-distance dispersal owing to mate and pollinator limitation. The rarity of heterostyly, a typical out-breeding system, on oceanic islands seems a good proof. However, a heterostylous plant, Guettarda speciosa, is widely distributed on most tropical oceanic islets. Our research demonstrates that its heteromorphic self-incompatibility, plus herkogamy and long flower tube make it rely on pollinator for sexual reproduction, which is generally considered "disadvantageous" for island colonization. We hypothesize that available pollination niche will be a key factor for its colonization on islands. Our studies on remote coral islands show that G. speciosa has built equilibrium population with a 1:1 morph ratio. It could obtain pollination niche from the hawkmoth Agrius convolvuli. A pioneer island plant Ipomoea pes-caprae sustain the pollination niche by providing trophic resource for the larvae of the pollinator. Geographic pattern drawn by Ecological Niche Modelling further indicates the interaction between G. speciosa, A. convolvuli and I. pes-caprae can be bounded on those remote oceanic islands, explaining the colonization of G. speciosa distylous population. These findings demonstrated obligate out-breeding system could be maintained to acclimatize long distance dispersal, if the pollination niche is available.
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Affiliation(s)
- Yuanqing Xu
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, The Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Zhonglai Luo
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, The Chinese Academy of Sciences, Guangzhou, 510650, China.
| | - Shaoxiong Gao
- Chongqing Nanshan Botanical Garden, Chongqing, 400065, China
| | - Dianxiang Zhang
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, The Chinese Academy of Sciences, Guangzhou, 510650, China.
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40
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Bertelsmeier C, Keller L. Bridgehead Effects and Role of Adaptive Evolution in Invasive Populations. Trends Ecol Evol 2018; 33:527-534. [DOI: 10.1016/j.tree.2018.04.014] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 04/23/2018] [Accepted: 04/24/2018] [Indexed: 11/25/2022]
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41
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Hu J, Jiang J. Inferring ecological explanations for biogeographic boundaries of parapatric Asian mountain frogs. BMC Ecol 2018; 18:3. [PMID: 29391060 PMCID: PMC5796512 DOI: 10.1186/s12898-018-0160-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 01/23/2018] [Indexed: 01/22/2023] Open
Abstract
Background Identifying and understanding the mechanisms that shape barriers to dispersal and resulting biogeographic boundaries has been a longstanding, yet challenging, goal in ecology, evolution and biogeography. Characterized by stable, adjacent ranges, without any intervening physical barriers, and limited, if any, range overlap in a narrow contact zone, parapatric species are an interesting system for studying biogeographic boundaries. The geographic ranges of two parapatric frog species, Feirana quadranus and F. taihangnica, meet in a contact zone within the Qinling Mountains, an important watershed for East Asia. To identify possible ecological determinants of the parapatric range boundaries for two closely related frog species, we quantified the extent of their niche differentiation in both geographical and environmental space combining ecological niche models with an ordination technique. We tested two alternative null hypotheses (sharp environmental gradients versus a ribbon of unsuitable habitat dividing two highly suitable regions) for biogeographic boundaries, against the null expectation that environmental variation across a given boundary is no greater than expected by chance. Results We found that the niches of these two parapatric species are more similar than expected by chance, but not equivalent. No sharp environmental gradient was found, while a ribbon of unsuitable habitat did act as a barrier for F. quadranus, but not for F. taihangnica. Conclusions Integrating our findings with historical biogeographic information, our results suggest that at a contact zone, environmental tolerance restricted F. quadranus from dispersing further north, while interspecific competition most likely prevented the southward expansion of F. taihangnica. This study highlights the importance of both climate and competition in exploring ecological explanations for parapatric range boundaries between ecologically similar frog species, in particular under the effects of changing climate. Electronic supplementary material The online version of this article (10.1186/s12898-018-0160-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Junhua Hu
- Key Laboratory of Southwest China Wildlife Resource Conservation (China West Normal University), Ministry of Education, Nanchong, 637009, China. .,Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China.
| | - Jianping Jiang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
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Wachowiak W, Perry A, Donnelly K, Cavers S. Early phenology and growth trait variation in closely related European pine species. Ecol Evol 2017; 8:655-666. [PMID: 29321902 PMCID: PMC5756864 DOI: 10.1002/ece3.3690] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 11/01/2017] [Accepted: 11/03/2017] [Indexed: 12/14/2022] Open
Abstract
Closely related taxa occupying different environments are valuable systems for studying evolution. In this study, we examined differences in early phenology (bud set, bud burst) and early growth in a common garden trial of closely related pine species: Pinus sylvestris, P. mugo, and P. uncinata. Seeds for the trial were sourced from populations across the ranges of each species in Europe. Over first 4 years of development, clear differences were observed between species, while the most significant intraspecific differentiation was observed among plants from P. sylvestris populations from continental European locations. Trait differences within P. sylvestris were highly correlated with altitude and latitude of the site of origin. Meanwhile, P. mugo populations from the Carpathians had the earliest bud set and bud flush compared to other populations of the species. Overall, populations from the P. mugo complex from heterogeneous mountain environments and P. sylvestris from the Scottish Highlands showed the highest within-population variation for the focal traits. Although the three species have been shown to be genetically highly similar, this study reveals large differences in key adaptive traits both among and within species.
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Affiliation(s)
- Witold Wachowiak
- Centre for Ecology and Hydrology Edinburgh Penicuik Midlothian UK.,Institute of Dendrology Polish Academy of Sciences Kórnik Poland
| | - Annika Perry
- Centre for Ecology and Hydrology Edinburgh Penicuik Midlothian UK
| | - Kevin Donnelly
- Centre for Ecology and Hydrology Edinburgh Penicuik Midlothian UK
| | - Stephen Cavers
- Centre for Ecology and Hydrology Edinburgh Penicuik Midlothian UK
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Acuña-Rodríguez IS, Torres-Díaz C, Hereme R, Molina-Montenegro MA. Asymmetric responses to simulated global warming by populations of Colobanthus quitensis along a latitudinal gradient. PeerJ 2017; 5:e3718. [PMID: 28948096 PMCID: PMC5607920 DOI: 10.7717/peerj.3718] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 07/29/2017] [Indexed: 11/20/2022] Open
Abstract
The increase in temperature as consequence of the recent global warming has been reported to generate new ice-free areas in the Antarctic continent, facilitating the colonization and spread of plant populations. Consequently, Antarctic vascular plants have been observed extending their southern distribution. But as the environmental conditions toward southern localities become progressively more departed from the species' physiological optimum, the ecophysiological responses and survival to the expected global warming could be reduced. However, if processes of local adaptation are the main cause of the observed southern expansion, those populations could appear constrained to respond positively to the expected global warming. Using individuals from the southern tip of South America, the South Shetland Islands and the Antarctic Peninsula, we assess with a long term experiment (three years) under controlled conditions if the responsiveness of Colobanthus quitensis populations to the expected global warming, is related with their different foliar traits and photoprotective mechanisms along the latitudinal gradient. In addition, we tested if the release of the stress condition by the global warming in these cold environments increases the ecophysiological performance. For this, we describe the latitudinal pattern of net photosynthetic capacity, biomass accumulation, and number of flowers under current and future temperatures respective to each site of origin after three growing seasons. Overall, was found a clinal trend was found in the foliar traits and photoprotective mechanisms in the evaluated C. quitensis populations. On the other hand, an asymmetric response to warming was observed for southern populations in all ecophysiological traits evaluated, suggesting that low temperature is limiting the performance of C. quitensis populations. Our results suggest that under a global warming scenario, plant populations that inhabiting cold zones at high latitudes could increase in their ecophysiological performance, enhancing the size of populations or their spread.
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Affiliation(s)
- Ian S. Acuña-Rodríguez
- Centro de Ecología Molecular y Aplicaciones Evolutivas en Agroecosistemas (CEM), Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Chile
| | - Cristian Torres-Díaz
- Laboratorio de Genómica y Biodiversidad (LGB), Departamento de Ciencias Básicas, Universidad del Bío-Bío, Chillan, Chile
| | - Rasme Hereme
- Centro de Ecología Molecular y Aplicaciones Evolutivas en Agroecosistemas (CEM), Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Chile
| | - Marco A. Molina-Montenegro
- Centro de Ecología Molecular y Aplicaciones Evolutivas en Agroecosistemas (CEM), Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Chile
- Centro de Estudios Avanzados en Zonas Áridas (CEAZA), Facultad de Ciencias del Mar, Universidad Católica del Norte, Coquimbo, Chile
- Research Program “Adaptation of Agriculture to Climate Change” PIEI A2C2, Universidad de Talca, Talca, Chile
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Mlynarek JJ, Moffat CE, Edwards S, Einfeldt AL, Heustis A, Johns R, MacDonnell M, Pureswaran DS, Quiring DT, Shibel Z, Heard SB. Enemy escape: A general phenomenon in a fragmented literature? Facets (Ott) 2017. [DOI: 10.1139/facets-2017-0041] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Many populations are thought to be regulated, in part, by their natural enemies. If so, disruption of this regulation should allow rapid population growth. Such “enemy escape” may occur in a variety of circumstances, including invasion, natural range expansion, range edges, suppression of enemy populations, host shifting, phenological changes, and defensive innovation. Periods of relaxed enemy pressure also occur in, and may drive, population oscillations and outbreaks. We draw attention to similarities among circumstances of enemy escape and build a general conceptual framework for the phenomenon. Although these circumstances share common mechanisms and depend on common assumptions, enemy escape can involve dynamics operating on very different temporal and spatial scales. In particular, the duration of enemy escape is rarely considered but will likely vary among circumstances. Enemy escape can have important evolutionary consequences including increasing competitive ability, spurring diversification, or triggering enemy counteradaptation. These evolutionary consequences have been considered for plant–herbivore interactions and invasions but largely neglected for other circumstances of enemy escape. We aim to unite the fragmented literature, which we argue has impeded progress in building a broader understanding of the eco-evolutionary dynamics of enemy escape.
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Affiliation(s)
- Julia J. Mlynarek
- Department of Biology, University of New Brunswick, P.O. Box 4400, Fredericton, NB E3B 5A3, Canada
| | - Chandra E. Moffat
- Department of Biology, University of New Brunswick, P.O. Box 4400, Fredericton, NB E3B 5A3, Canada
| | - Sara Edwards
- Population Ecology Group, Faculty of Forestry & Environmental Management, University of New Brunswick, P.O. Box 4400, Fredericton, NB E3B 5A3, Canada
| | - Anthony L. Einfeldt
- Department of Biology, University of New Brunswick, P.O. Box 4400, Fredericton, NB E3B 5A3, Canada
| | - Allyson Heustis
- Department of Biology, University of New Brunswick, P.O. Box 4400, Fredericton, NB E3B 5A3, Canada
- Forest Insect Ecology, Atlantic Forestry Centre, 1350 Regent Street, P.O. Box 4000, Fredericton, NB E3B 5P7, Canada
| | - Rob Johns
- Forest Insect Ecology, Atlantic Forestry Centre, 1350 Regent Street, P.O. Box 4000, Fredericton, NB E3B 5P7, Canada
| | - Mallory MacDonnell
- Department of Biology, University of New Brunswick, P.O. Box 4400, Fredericton, NB E3B 5A3, Canada
| | - Deepa S. Pureswaran
- Forest Insect Ecology, Laurentian Forestry Centre, 1055 Du PEPS Street, P.O. Box 10380, Québec, QC G1V 4C7, Canada
| | - Dan T. Quiring
- Population Ecology Group, Faculty of Forestry & Environmental Management, University of New Brunswick, P.O. Box 4400, Fredericton, NB E3B 5A3, Canada
| | - Zoryana Shibel
- Department of Biology, University of New Brunswick, P.O. Box 4400, Fredericton, NB E3B 5A3, Canada
| | - Stephen B. Heard
- Department of Biology, University of New Brunswick, P.O. Box 4400, Fredericton, NB E3B 5A3, Canada
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Can acclimation of thermal tolerance, in adults and across generations, act as a buffer against climate change in tropical marine ectotherms? J Therm Biol 2017; 68:195-199. [DOI: 10.1016/j.jtherbio.2016.09.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 09/08/2016] [Accepted: 09/08/2016] [Indexed: 11/23/2022]
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Ashcroft MB, King DH, Raymond B, Turnbull JD, Wasley J, Robinson SA. Moving beyond presence and absence when examining changes in species distributions. GLOBAL CHANGE BIOLOGY 2017; 23:2929-2940. [PMID: 28100027 DOI: 10.1111/gcb.13628] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 12/20/2016] [Indexed: 06/06/2023]
Abstract
Species distributions are often simplified to binary representations of the ranges where they are present and absent. It is then common to look for changes in these ranges as indicators of the effects of climate change, the expansion or control of invasive species or the impact of human land-use changes. We argue that there are inherent problems with this approach, and more emphasis should be placed on species relative abundance rather than just presence. The sampling effort required to be confident of absence is often impractical to achieve, and estimates of species range changes based on survey data are therefore inherently sensitive to sampling intensity. Species niches estimated using presence-absence or presence-only models are broader than those for abundance and may exaggerate the viability of small marginal sink populations. We demonstrate that it is possible to transform models of predicted probability of presence to expected abundance if the sampling intensity is known. Using case studies of Antarctic mosses and temperate rain forest trees, we demonstrate additional insights into biotic change that can be gained using this method. While species becoming locally extinct or colonising new areas are extreme and obviously important impacts of global environmental change, changes in abundance could still signal important changes in biological systems and be an early warning indicator of larger future changes.
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Affiliation(s)
- Michael B Ashcroft
- Centre for Sustainable Ecosystem Solutions, School of Biological Sciences, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Diana H King
- Centre for Sustainable Ecosystem Solutions, School of Biological Sciences, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Ben Raymond
- Australian Antarctic Division, Department of Environment, Kingston, TAS, 7050, Australia
- Antarctic Climate and Ecosystems Cooperative Research Centre, Private Bag 80, Hobart, TAS, 7001, Australia
| | - Johanna D Turnbull
- Centre for Sustainable Ecosystem Solutions, School of Biological Sciences, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Jane Wasley
- Centre for Sustainable Ecosystem Solutions, School of Biological Sciences, University of Wollongong, Wollongong, NSW, 2522, Australia
- Australian Antarctic Division, Department of Environment, Kingston, TAS, 7050, Australia
| | - Sharon A Robinson
- Centre for Sustainable Ecosystem Solutions, School of Biological Sciences, University of Wollongong, Wollongong, NSW, 2522, Australia
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Mumladze L, Murvanidze M, Maraun M. Patterns of oribatid mite species diversity: testing the effects of elevation, area and sampling effort. EXPERIMENTAL & APPLIED ACAROLOGY 2017; 72:245-262. [PMID: 28717996 DOI: 10.1007/s10493-017-0153-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 07/11/2017] [Indexed: 06/07/2023]
Abstract
Elevational gradients in species diversity and species area relationships are two well established patterns that are not mutually exclusive in space and time. Elevation and area are both considered as good proxies to detect and characterize the patterns of species diversity distribution. However, such studies are hampered by the incomplete biodiversity data available for ecologists, which may affect the pattern perceptions. Using the large dataset of oribatid mite communities sampled in Georgia, we tested the effects of altitude and area on species distribution using various approaches, while explicitly considering the biases from sampling effort. Our results showed that elevation and area are strongly correlated (with increasing absolute elevation, land area decreases) and both have strong linear effects on species diversity distribution when studied separately. Approaches based on multiple regression and direct removal of co-varied factors, indicated that the effect of area can actually override the effect of elevation in describing the oribatid species diversity distribution along with elevation. On the other hand, the bias of sampling proved significant in perception of elevational species richness pattern with less effect on elevational species area relationship. We suggest that the sampling alone may be responsible for patterns observed and thus should be considered in ecological studies when eligible.
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Affiliation(s)
- Levan Mumladze
- Biodiversity Research Center (Institute of Ecology), Institute of Zoology, Ilia State University, Cholokashvili Ave 3/5, 0165, Tbilisi, Georgia.
- Invertebrate Research Centre (IRC), Agladze St. 26, 0119, Tbilisi, Georgia.
| | - Maka Murvanidze
- Invertebrate Research Centre (IRC), Agladze St. 26, 0119, Tbilisi, Georgia
- Institute of Entomology of Agricultural, University of Georgia, 13 km Aghmashenebeli Alley, 0131, Tbilisi, Georgia
| | - Mark Maraun
- JFB Institute of Zoology and Anthropology, Georg August University Göttingen, Untere Karspüle, 37073, Göttingen, Germany
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Stodola KW, Ward MP. The Emergent Properties of Conspecific Attraction Can Limit a Species' Ability to Track Environmental Change. Am Nat 2017; 189:726-733. [PMID: 28514629 DOI: 10.1086/691469] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Multiple biotic, abiotic, and evolutionary constraints interact to determine a species' range. However, most species are not present in all suitable and accessible locations. Dispersal ability may explain why many species do not occupy all suitable habitat, but highly mobile species also exhibit a mismatch. Habitat selection behavior where individuals are site faithful and settle near conspecifics could create a social pressure that make a species' geographic range resistant to change. We investigated this possibility by using an individual-based model of habitat selection where habitat quality moved each year. Our model demonstrated the benefits of conspecific attraction in relatively stable environments and its detrimental influence when habitat quality shifted rapidly. These results were most apparent when adult survival was high, because site fidelity led to more individuals occupying poor-quality habitat areas as habitat quality changed. These individuals attracted other dispersing individuals, thereby decreasing the ability to track shifts in habitat quality, which we refer to as "social inertia." Consequently, social inertia may arise for species that exhibit site fidelity and conspecific attraction, which may have conservation implications in light of climate change and widespread alteration of natural habitats.
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Carbonell JA, Bilton DT, Calosi P, Millán A, Stewart A, Velasco J. Metabolic and reproductive plasticity of core and marginal populations of the eurythermic saline water bug Sigara selecta (Hemiptera: Corixidae) in a climate change context. JOURNAL OF INSECT PHYSIOLOGY 2017; 98:59-66. [PMID: 27915134 DOI: 10.1016/j.jinsphys.2016.11.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 11/03/2016] [Accepted: 11/28/2016] [Indexed: 06/06/2023]
Abstract
Ongoing climate change is driving dramatic range shifts in diverse taxa worldwide, and species responses to global change are likely to be determined largely by population responses at geographical range margins. Here we investigate the metabolic and reproductive plasticity in response to water temperature and salinity variation of two populations of the eurythermic saline water bug Sigara selecta: one population located close to the northern edge of its distribution, in a relatively cold, thermally stable region (SE England - 'marginal'), and one close to the range centre, in a warmer and more thermally variable Mediterranean climate (SE Spain - 'core'). We compared metabolic and oviposition rates and egg size, following exposure to one of four different combinations of temperature (15 and 25°C) and salinity (10 and 35gL-1). Oviposition rate was significantly higher in the marginal population, although eggs laid were smaller overall. No significant differences in oxygen consumption rates were found between core and marginal populations, although the marginal population showed higher levels of plasticity in both metabolic and reproductive traits. Our results suggest that population-specific responses to environmental change are complex and may be mediated by differences in phenotypic plasticity. In S. selecta, the higher plasticity of the marginal population may facilitate both its persistence in current habitats and northward expansion with future climatic warming. The less plastic core population may be able to buffer current environmental variability with minor changes in metabolism and fecundity, but could be prone to extinction if temperature and salinity changes exceed physiological tolerance limits in the future.
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Affiliation(s)
- J A Carbonell
- Departamento de Ecología e Hidrología, Facultad de Biología, Campus de Espinardo, 30100, Universidad de Murcia, Murcia, Spain.
| | - D T Bilton
- Marine Biology and Ecology Research Centre, School of Marine Science and Engineering, University of Plymouth, Davy Building, Drake Circus, Plymouth PL4 8AA, UK
| | - P Calosi
- Département de Biologie Chimie et Géographie, Université du Québec à Rimouski, 300 Allée des Ursulines, Rimouski, Québec G5L 3A1, Canada
| | - A Millán
- Departamento de Ecología e Hidrología, Facultad de Biología, Campus de Espinardo, 30100, Universidad de Murcia, Murcia, Spain
| | - A Stewart
- School of Life Sciences, University of Sussex, Falmer, Brighton, Sussex BN1 9QG, UK
| | - J Velasco
- Departamento de Ecología e Hidrología, Facultad de Biología, Campus de Espinardo, 30100, Universidad de Murcia, Murcia, Spain
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50
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Mohd MH, Murray R, Plank MJ, Godsoe W. Effects of dispersal and stochasticity on the presence–absence of multiple species. Ecol Modell 2016. [DOI: 10.1016/j.ecolmodel.2016.09.026] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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