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Bizama G, Jan A, Olivos JA, Fuentes-Jaque G, Valdovinos C, Urrutia R, Arismendi I. Climate change can disproportionately reduce habitats of stream fishes with restricted ranges in southern South America. Sci Rep 2024; 14:15780. [PMID: 38982210 PMCID: PMC11238036 DOI: 10.1038/s41598-024-66374-6] [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: 09/14/2023] [Accepted: 07/01/2024] [Indexed: 07/11/2024] Open
Abstract
Freshwater fishes are among the most threatened taxa worldwide owing to changes in land use, species introductions, and climate change. Although more than half of the freshwater fishes in the Chilean Mediterranean ecoregion are considered vulnerable or endangered, still little is known about their biogeography. Fishes of the family Perciliidae are endemic of this region and ideal cases to study potential implications of global warming given their endangered conservation status, small size, restricted range, and limited dispersal capacity in fragmented habitats. Here, we model the spatial distribution of habitats for Percilia irwini and P. gillissi under current (1970-2000) and future (2050-2080) climatic scenarios (SSP245, SSP585). We implement maximum entropy (MaxEnt) models adapted for stream networks using high-resolution datasets of selected geophysical and climatic variables. At present, both species inhabit relatively low-quality habitats. In the future (SSP585), suitable habitats for P. irwini are predicted to be reduced drastically (99%) with potential local extirpations in its northern range. Similarly, up to 62% of suitable habitats for P. gillissi would also be reduced in the future. Our study provides insights about assessing future threats and vulnerability of endemic, endangered, range-restricted, and small-bodied freshwater species in this region and elsewhere.
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Affiliation(s)
- Gustavo Bizama
- Doctorado de Ciencias Ambientales, en Ecosistemas Acuáticos Continentales, Facultad de Ciencias Ambientales, Centro EULA-Chile, Universidad de Concepción, Víctor Lamas 1290, 4070386, Concepción, Chile.
- Centro de Recursos Hídricos para la Agricultura y Minería CRIHAM, Concepción, Chile.
| | - Arif Jan
- Department of Fisheries, Wildlife, and Conservation Sciences, Oregon State University, Corvallis, OR, 97331, USA
| | - J Andrés Olivos
- Department of Fisheries, Wildlife, and Conservation Sciences, Oregon State University, Corvallis, OR, 97331, USA
| | - Guillermo Fuentes-Jaque
- Department of Environmental Sciences and Renewable Natural Resources, Faculty of Agricultural Sciences, University of Chile, Santiago, Chile
| | - Claudio Valdovinos
- Doctorado de Ciencias Ambientales, en Ecosistemas Acuáticos Continentales, Facultad de Ciencias Ambientales, Centro EULA-Chile, Universidad de Concepción, Víctor Lamas 1290, 4070386, Concepción, Chile
| | - Roberto Urrutia
- Doctorado de Ciencias Ambientales, en Ecosistemas Acuáticos Continentales, Facultad de Ciencias Ambientales, Centro EULA-Chile, Universidad de Concepción, Víctor Lamas 1290, 4070386, Concepción, Chile
- Centro de Recursos Hídricos para la Agricultura y Minería CRIHAM, Concepción, Chile
| | - Ivan Arismendi
- Department of Fisheries, Wildlife, and Conservation Sciences, Oregon State University, Corvallis, OR, 97331, USA
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2
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Douce P, Simon L, Colas F, Mermillod-Blondin F, Renault D, Sulmon C, Eymar-Dauphin P, Dubreucque R, Bittebiere AK. Warming drives feedback between plant phenotypes and ecosystem functioning in sub-Antarctic ponds. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 914:169504. [PMID: 38145689 DOI: 10.1016/j.scitotenv.2023.169504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 12/14/2023] [Accepted: 12/17/2023] [Indexed: 12/27/2023]
Abstract
Ample evidence indicates that warming affects individuals in plant communities, ultimately threatening biodiversity. Individual plants in communities are also exposed to plant-plant interaction that may affect their performance. However, trait responses to these two constraints have usually been studied separately, while they may influence processes at the ecosystem level. In turn, these ecological modifications may impact the phenotypes of plants through nutrient availability and uptake. We developed an experimental approach based on the macrophyte communities in the ponds of the sub-Antarctic Iles Kerguelen. Individuals of the species Limosella australis were grown under different temperature × plant-plant interaction treatments to assess their trait responses and create litters with different characteristics. The litters were then decomposed in the presence of individual plants at different temperatures to examine effects on ecosystem functioning and potential feedback affecting plant trait values. Leaf resource-acquisition- and -conservation-related traits were altered in the context of temperature × plant-plant interaction. At 13 °C, SLA and leaf C:N were higher under interspecific and intraspecific interactions than without interaction, whereas at 23 °C, these traits increased under intraspecific interaction only. These effects only slightly improved the individual performance, suggesting that plant-plant interaction is an additional selective pressure on individuals in the context of climate warming. The decay rate of litter increased with the Leaf Carbon Content at 13 °C and 18 °C, but decreased at 23 °C. The highest decay rate was recorded at 18 °C. Besides, we observed evidence of positive feedback of the decay rate alone, and in interaction with the temperature, respectively on the leaf C:N and Leaf Dry Matter Content, suggesting that variations in ecological processes affect plant phenotypes. Our findings demonstrate that warming can directly and indirectly affect the evolutionary and ecological processes occurring in aquatic ecosystems through plants.
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Affiliation(s)
- Pauline Douce
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR5023 LEHNA, F-69622 Villeurbanne, France.
| | - Laurent Simon
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR5023 LEHNA, F-69622 Villeurbanne, France.
| | - Fanny Colas
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR5023 LEHNA, F-69622 Villeurbanne, France.
| | - Florian Mermillod-Blondin
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR5023 LEHNA, F-69622 Villeurbanne, France.
| | - David Renault
- Univ Rennes, CNRS, ECOBIO [(Ecosystèmes, biodiversité, évolution)], UMR 6553, F 35000 Rennes, France; Institut Universitaire de France, 1 Rue Descartes, 75231 Paris cedex 05, France.
| | - Cécile Sulmon
- Univ Rennes, CNRS, ECOBIO [(Ecosystèmes, biodiversité, évolution)], UMR 6553, F 35000 Rennes, France.
| | - Pauline Eymar-Dauphin
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR5023 LEHNA, F-69622 Villeurbanne, France.
| | - Roman Dubreucque
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR5023 LEHNA, F-69622 Villeurbanne, France.
| | - Anne-Kristel Bittebiere
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR5023 LEHNA, F-69622 Villeurbanne, France.
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Douce P, Mermillod-Blondin F, Simon L, Dolédec S, Eymar-Dauphin P, Renault D, Sulmon C, Vallier F, Bittebiere AK. Biotic and abiotic drivers of aquatic plant communities in shallow pools and wallows on the sub-Antarctic Iles Kerguelen. Polar Biol 2023. [DOI: 10.1007/s00300-023-03122-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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4
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Renault D, Leclerc C, Colleu M, Boutet A, Hotte H, Colinet H, Chown SL, Convey P. The rising threat of climate change for arthropods from Earth's cold regions: Taxonomic rather than native status drives species sensitivity. GLOBAL CHANGE BIOLOGY 2022; 28:5914-5927. [PMID: 35811569 PMCID: PMC9544941 DOI: 10.1111/gcb.16338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 06/14/2022] [Indexed: 06/15/2023]
Abstract
Polar and alpine regions are changing rapidly with global climate change. Yet, the impacts on biodiversity, especially on the invertebrate ectotherms which are dominant in these areas, remain poorly understood. Short-term extreme temperature events, which are growing in frequency, are expected to have profound impacts on high-latitude ectotherms, with native species being less resilient than their alien counterparts. Here, we examined in the laboratory the effects of short periodic exposures to thermal extremes on survival responses of seven native and two non-native invertebrates from the sub-Antarctic Islands. We found that survival of dipterans was significantly reduced under warming exposures, on average having median lethal times (LT50 ) of about 30 days in control conditions, which declined to about 20 days when exposed to daily short-term maxima of 24°C. Conversely, coleopterans were either not, or were less, affected by the climatic scenarios applied, with predicted LT50 as high as 65 days under the warmest condition (daily exposures at 28°C for 2 h). The native spider Myro kerguelensis was characterized by an intermediate sensitivity when subjected to short-term daily heat maxima. Our results unexpectedly revealed a taxonomic influence, with physiological sensitivity to heat differing between higher level taxa, but not between native and non-native species representing the same higher taxon. The survival of a non-native carabid beetle under the experimentally imposed conditions was very high, but similar to that of native beetles, while native and non-native flies also exhibited very similar sensitivity to warming. As dipterans are a major element of diversity of sub-Antarctic, Arctic and other cold ecosystems, such observations suggest that the increased occurrence of extreme, short-term, thermal events could lead to large-scale restructuring of key terrestrial ecosystem components both in ecosystems protected from and those exposed to the additional impacts of biological invasions.
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Affiliation(s)
- David Renault
- UMR 6553Univ Rennes, CNRS, ECOBIO (Ecosystèmes, Biodiversité, Évolution)RennesFrance
| | - Camille Leclerc
- UMR 6553Univ Rennes, CNRS, ECOBIO (Ecosystèmes, Biodiversité, Évolution)RennesFrance
- INRAE, Aix‐Marseille Université, UMR RECOVERAix‐en‐ProvenceFrance
| | - Marc‐Antoine Colleu
- UMR 6553Univ Rennes, CNRS, ECOBIO (Ecosystèmes, Biodiversité, Évolution)RennesFrance
| | - Aude Boutet
- UMR 6553Univ Rennes, CNRS, ECOBIO (Ecosystèmes, Biodiversité, Évolution)RennesFrance
| | - Hoel Hotte
- UMR 6553Univ Rennes, CNRS, ECOBIO (Ecosystèmes, Biodiversité, Évolution)RennesFrance
- Nematology Unit, Plant Health LaboratoryANSESLe Rheu CedexFrance
| | - Hervé Colinet
- UMR 6553Univ Rennes, CNRS, ECOBIO (Ecosystèmes, Biodiversité, Évolution)RennesFrance
| | - Steven L. Chown
- Securing Antarctica's Environmental Future, School of Biological SciencesMonash UniversityMelbourneVictoriaAustralia
| | - Peter Convey
- British Antarctic Survey, NERCCambridgeUK
- Department of ZoologyUniversity of JohannesburgAuckland ParkSouth Africa
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Queiroz HADA, Gonçalves RM, Mishra M. Characterizing global satellite-based indicators for coastal vulnerability to erosion management as exemplified by a regional level analysis from Northeast Brazil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 817:152849. [PMID: 35016934 DOI: 10.1016/j.scitotenv.2021.152849] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/16/2021] [Accepted: 12/28/2021] [Indexed: 06/14/2023]
Abstract
The detection of coastal vulnerability to erosion is crucial for decision-making regarding the economy, ecology, health, security, among other issues. Most of the studies gather a large data set about physical and anthropogenic interference's on the vulnerability of coastal erosion regions around the world. However, for developing nations like Brazil, with extensive shoreline, it is challenging to develop and maintain an in situ infrastructure to offer a systematical scientific data set. In this context, several methods like Coastal Vulnerability Index (CVI) for monitoring the dynamic behavior of coastal systems require in situ collected data. Therefore, this contribution explores the use of global open source satellite-based indicators to assess coastal vulnerability to erosion at a regional level adopting an uncorrelated orthogonal basis set of Principal Component Analysis (PCA). For this, the data set covers many spheres of the environment like biophysical and social factors, adopting the Pernambuco State's coast, Brazil, as a case study. The results showed the direct relationship between a high level of urbanization and low vegetation with the high coastal vulnerability to erosion. PC1 revealed built-up and surface temperature vary inversely to the soil organic carbon and vegetation cover along about 20 km (≈10% of the shoreline extension). The hotspots were in the urban cluster (Paulista, Olinda, Recife, and Jaboatao dos Guararapes), combined with high shoreline change around -2 m/yr. PC2 showed the natural action of wind on wave heights combined with sediment removal and the backshore settlement along 10 km of extension (≈5.5% of the shoreline), with the highly vulnerable sites concentrated in Itamaraca Island and C. S. Agostinho. This approach benefits from the multi-satellite and multi-resolution data sets integration to unravel the statistical influence of each variable able to guide stakeholders.
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Affiliation(s)
- Heithor Alexandre de Araújo Queiroz
- Federal Institute of Education, Science, and Technology Baiano (IF Baiano), Guanambi, BA, Brazil; Department of Cartographic Engineering, Federal University of Pernambuco (UFPE), Geodetic Science and Technology of Geoinformation Post Graduation Program, Recife, PE, Brazil
| | - Rodrigo Mikosz Gonçalves
- Department of Cartographic Engineering, Federal University of Pernambuco (UFPE), Geodetic Science and Technology of Geoinformation Post Graduation Program, Recife, PE, Brazil.
| | - Manoranjan Mishra
- Department of Natural Resource Management & Geoinformatics, Berhampur University, Berhampur, Ganjam, Odisha, India
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Escribano-Álvarez P, Pertierra LR, Martínez B, Chown SL, Olalla-Tárraga MÁ. Half a century of thermal tolerance studies in springtails (Collembola): A review of metrics, spatial and temporal trends. CURRENT RESEARCH IN INSECT SCIENCE 2022; 2:100023. [PMID: 36003273 PMCID: PMC9387465 DOI: 10.1016/j.cris.2021.100023] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 11/17/2021] [Accepted: 11/23/2021] [Indexed: 11/28/2022]
Abstract
Metrics used in thermal tolerance studies in Collembola have diversified over time Cold tolerance has been assessed more often than heat tolerance Fewer data exist for tropical regions, especially for euedaphic and epedaphic organisms Thermal tolerances in Neanuridae are not as well-studied as in the other families
Global changes in soil surface temperatures are altering the abundances and distribution ranges of invertebrate species worldwide, including effects on soil microarthropods such as springtails (Collembola), which are vital for maintaining soil health and providing ecosystem services. Studies of thermal tolerance limits in soil invertebrates have the potential to provide information on demographic responses to climate change and guide assessments of possible impacts on the structure and functioning of ecosystems. Here, we review the state of knowledge of thermal tolerance limits in Collembola. Thermal tolerance metrics have diversified over time, which should be taken into account when conducting large-scale comparative studies. A temporal trend shows that the estimation of ‘Critical Thermal Limits’ (CTL) is becoming more common than investigations of ‘Supercooling Point’ (SCP), despite the latter being the most widely used metric. Indeed, most studies (66%) in Collembola have focused on cold tolerance; fewer have assessed heat tolerance. The majority of thermal tolerance data are from temperate and polar regions, with fewer assessments from tropical and subtropical latitudes. While the hemiedaphic life form represents the majority of records at low latitudes, euedaphic and epedaphic groups remain largely unsampled in these regions compared to the situation in temperate and high latitude regions, where sampling records show a more balanced distribution among the different life forms. Most CTL data are obtained during the warmest period of the year, whereas SCP and ‘Lethal Temperature’ (LT) show more variation in terms of the season when the data were collected. We conclude that more attention should be given to understudied zoogeographical regions across the tropics, as well as certain less-studied clades such as the family Neanuridae, to identify the role of thermal tolerance limits in the redistribution of species under changing climates.
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Affiliation(s)
- Pablo Escribano-Álvarez
- Dpto. Biología, Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, 28933, Móstoles, Spain
- Corresponding author.
| | - Luis R. Pertierra
- Dpto. Biología, Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, 28933, Móstoles, Spain
| | - Brezo Martínez
- Dpto. Biología, Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, 28933, Móstoles, Spain
| | - Steven L. Chown
- Securing Antarctica's Environmental Future, School of Biological Sciences, Monash University, Melbourne, VIC, 3800, Australia
| | - Miguel Á. Olalla-Tárraga
- Dpto. Biología, Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, 28933, Móstoles, Spain
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7
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Saiz H, Renault D, Puijalon S, Barrio M, Bertrand M, Tolosano M, Pierre A, Ferreira C, Prouteau C, Bittebiere A. Huff and puff and blow down: invasive plants traits response to strong winds at the Southern Oceanic Islands. OIKOS 2021. [DOI: 10.1111/oik.08249] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Hugo Saiz
- Inst. of Plant Sciences, Univ. of Bern Bern Switzerland
| | - David Renault
- Univ. de Rennes, CNRS, EcoBio (Ecosystèmes, Biodiversité, Evolution) – UMR 6553 Rennes France
- Inst. Univ. de France Paris Cedex 05 France
| | - Sara Puijalon
- Univ. Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA Villeurbanne France
| | - Miguel Barrio
- Univ. de Rennes, CNRS, EcoBio (Ecosystèmes, Biodiversité, Evolution) – UMR 6553 Rennes France
| | - Mathilde Bertrand
- Univ. de Rennes, CNRS, EcoBio (Ecosystèmes, Biodiversité, Evolution) – UMR 6553 Rennes France
| | - Matteo Tolosano
- Univ. de Rennes, CNRS, EcoBio (Ecosystèmes, Biodiversité, Evolution) – UMR 6553 Rennes France
| | - Aurélien Pierre
- Univ. de Rennes, CNRS, EcoBio (Ecosystèmes, Biodiversité, Evolution) – UMR 6553 Rennes France
| | - Charly Ferreira
- Univ. Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA Villeurbanne France
| | - Clémentine Prouteau
- Univ. Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA Villeurbanne France
| | - Anne‐Kristel Bittebiere
- Univ. Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA Villeurbanne France
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8
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Baker DJ, Dickson CR, Bergstrom DM, Whinam J, Maclean IM, McGeoch MA. Evaluating models for predicting microclimates across sparsely vegetated and topographically diverse ecosystems. DIVERS DISTRIB 2021. [DOI: 10.1111/ddi.13398] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- David J. Baker
- Environment and Sustainability Institute University of Exeter Penryn Cornwall UK
- School of Biological Sciences Monash University Clayton Vic. Australia
| | | | - Dana M. Bergstrom
- Australian Antarctic Division Department of Agriculture, Water and the Environment Kingston TAS Australia
| | - Jennie Whinam
- School of Geography and Spatial Science University of Tasmania Hobart TAS Australia
| | - Ilya M.D. Maclean
- Environment and Sustainability Institute University of Exeter Penryn Cornwall UK
| | - Melodie A. McGeoch
- School of Biological Sciences Monash University Clayton Vic. Australia
- Department of Ecology, Environment and Evolution La Trobe University Melbourne Vic. Australia
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9
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Mairal M, Chown SL, Shaw J, Chala D, Chau JH, Hui C, Kalwij JM, Münzbergová Z, Jansen van Vuuren B, Le Roux JJ. Human activity strongly influences genetic dynamics of the most widespread invasive plant in the sub-Antarctic. Mol Ecol 2021; 31:1649-1665. [PMID: 34181792 DOI: 10.1111/mec.16045] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/14/2021] [Accepted: 06/21/2021] [Indexed: 11/26/2022]
Abstract
The link between the successful establishment of alien species and propagule pressure is well-documented. Less known is how humans influence the post-introduction dynamics of invasive alien populations. The latter requires studying parallel invasions by the same species in habitats that are differently impacted by humans. We analysed microsatellite and genome size variation, and then compared the genetic diversity and structure of invasive Poa annua L. on two sub-Antarctic islands: human-occupied Marion Island and unoccupied Prince Edward Island. We also carried out niche modelling to map the potential distribution of the species on both islands. We found high levels of genetic diversity and evidence for extensive admixture between genetically distinct lineages of P. annua on Marion Island. By contrast, the Prince Edward Island populations showed low genetic diversity, no apparent admixture, and had smaller genomes. On both islands, high genetic diversity was apparent at human landing sites, and on Marion Island, also around human settlements, suggesting that these areas received multiple introductions and/or acted as initial introduction sites and secondary sources (bridgeheads) for invasive populations. More than 70 years of continuous human activity associated with a meteorological station on Marion Island led to a distribution of this species around human settlements and along footpaths, which facilitates ongoing gene flow among geographically separated populations. By contrast, this was not the case for Prince Edward Island, where P. annua populations showed high genetic structure. The high levels of genetic variation and admixture in P. annua facilitated by human activity, coupled with high habitat suitability on both islands, suggest that P. annua is likely to increase its distribution and abundance in the future.
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Affiliation(s)
- Mario Mairal
- Department of Botany and Zoology, Stellenbosch University, Stellenbosch, South Africa.,Departamento de Biodiversidad, Ecología y Evolución, Facultad de Ciencias Biológicas, Universidad Complutense de Madrid, Ciudad Universitaria, Madrid, Spain
| | - Steven L Chown
- Securing Antarctica's Environmental Future, School of Biological Sciences, Monash University, Victoria, Australia
| | - Justine Shaw
- School of Biological Sciences, The University of Queensland, St Lucia, Queensland, Australia
| | - Desalegn Chala
- Natural History Museum, University of Oslo, Oslo, Norway
| | - John H Chau
- Centre for Ecological Genomics and Wildlife Conservation, Department of Zoology, University of Johannesburg, Auckland Park, South Africa
| | - Cang Hui
- Centre for Invasion Biology, Department of Mathematical Sciences, Stellenbosch University, Stellenbosch, South Africa.,Biodiversity Informatics Unit, African Institute for Mathematical Sciences, Cape Town, South Africa
| | - Jesse M Kalwij
- Centre for Ecological Genomics and Wildlife Conservation, Department of Zoology, University of Johannesburg, Auckland Park, South Africa.,Institute of Geography and Geoecology, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Zuzana Münzbergová
- Department of Botany, Charles University, Prague, Czech Republic.,Department of Population Ecology, Czech Academy of Science, Průhonice, Czech Republic
| | - Bettine Jansen van Vuuren
- Centre for Ecological Genomics and Wildlife Conservation, Department of Zoology, University of Johannesburg, Auckland Park, South Africa
| | - Johannes J Le Roux
- Department of Botany and Zoology, Stellenbosch University, Stellenbosch, South Africa.,Department of Biological Sciences, Macquarie University, Sydney, New South Wales, Australia
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10
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Kuyucu AC, Chown SL. Time course of acclimation of critical thermal limits in two springtail species (Collembola). JOURNAL OF INSECT PHYSIOLOGY 2021; 130:104209. [PMID: 33609519 DOI: 10.1016/j.jinsphys.2021.104209] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 01/12/2021] [Accepted: 02/11/2021] [Indexed: 06/12/2023]
Abstract
Critical thermal limits are one of the most important sources of information on the possible impacts of climate change on soil microarthropods. The extent of plasticity of tolerance limits can provide valuable insights about the likely responses of ectotherms to environmental change. Although many studies have investigated various aspects of the acclimatory response of thermal limits to temperature changes in arthropods, the number of studies focusing on the temporal dynamics of this plastic response is relatively small. Collembola, one of the key microarthropods groups in almost all soil ecosystems around the world, have been the focus of several thermal acclimation studies. Yet the time course of acclimation and its reversal have not been widely studied in this group. Here we investigated the time course of acclimation of critical thermal maxima (CTmax) and minima (CTmin) of two springtail species. We exposed a Cryptopygus species from temperate southern Australia to high and low temperature conditions and Mucrosomia caeca from Sub-Antarctic Macquarie Island to high temperature conditions. Upper thermal limits in both species were found to be highly constrained, as CTmax did not show substantial response to high and low temperature acclimation both in the Cryptopygus species and M. caeca, whereas CTmin showed significant responses to high and low temperature conditions. The acclimation begins to stabilize in approximately seven days in all treatments except for the acclimation of CTmin under high temperature conditions, where the pattern of change suggests that this acclimation might take longer to be completed. Although reversal of this acclimation also begins to stabilize under 7 days, re-acclimation was relatively slow as we did not observe a very clear settling point in 2 of the 3 re-acclimation treatments. The observed limits on the plasticity of CTmax indicate that both of these species may be very limited in their ability to respond plastically to short-term rapid changes in temperature (i.e temperature extremes).
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Affiliation(s)
- Arda C Kuyucu
- Hacettepe University, Department of Biology, Ankara 06800, Turkey.
| | - Steven L Chown
- School of Biological Sciences, Monash University, Victoria 3800, Australia
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11
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Leihy RI, Chown SL. Wind plays a major but not exclusive role in the prevalence of insect flight loss on remote islands. Proc Biol Sci 2020; 287:20202121. [PMID: 33290676 DOI: 10.1098/rspb.2020.2121] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Terrestrial species on islands often show reduced dispersal abilities. For insects, the generality of explanations for island flight loss remains contentious. Although habitat stability is considered the most plausible explanation, others are frequently highlighted. Adopting a strong inference approach, we examined the hypotheses proposed to account for the prevalence of flightlessness in island insect assemblages, for a region long suspected to be globally unusual in this regard-the Southern Ocean Islands (SOIs). Combining comprehensive faunal inventories, species' morphological information, and environmental variables from 28 SOIs, we provide the first quantitative evidence that flightlessness is exceptionally prevalent among indigenous SOI insect species (47%). Prevalence among species which have evolved elsewhere is much lower: Arctic island species (8%), species introduced to the SOIs (17%), and globally (estimated as approx. 5%). Variation in numbers of flightless species and genera across islands is best explained by variation in wind speed, although habitat stability (thermal seasonality proxy) may play a role. Variables associated with insularity, such as island size, are generally poor predictors of flightlessness. The outcomes redirect attention to Darwin's wind hypothesis. They suggest, however, that wind selects for flightlessness through an energy trade-off between flight and reproduction, instead of by displacement from suitable habitats.
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Affiliation(s)
- Rachel I Leihy
- School of Biological Sciences, Monash University, Victoria 3800, Australia
| | - Steven L Chown
- School of Biological Sciences, Monash University, Victoria 3800, Australia
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12
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Braschler B, Duffy GA, Nortje E, Kritzinger-Klopper S, du Plessis D, Karenyi N, Leihy RI, Chown SL. Realised rather than fundamental thermal niches predict site occupancy: Implications for climate change forecasting. J Anim Ecol 2020; 89:2863-2875. [PMID: 32981063 DOI: 10.1111/1365-2656.13358] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 09/10/2020] [Indexed: 12/14/2022]
Abstract
Thermal performance traits are regularly used to make forecasts of the responses of ectotherms to anthropogenic environmental change, but such forecasts do not always differentiate between fundamental and realised thermal niches. Here we determine the relative extents to which variation in the fundamental and realised thermal niches accounts for current variation in species abundance and occupancy and assess the effects of niche-choice on future-climate response estimations. We investigated microclimate and macroclimate temperatures alongside abundance, occupancy, critical thermal limits and foraging activity of 52 ant species (accounting for >95% individuals collected) from a regional assemblage from across the Western Cape Province, South Africa, between 2003 and 2014. Capability of a species to occupy sites experiencing the most extreme temperatures, coupled with breadth of realised niche, explained most deviance in occupancy (up to 75%), while foraging temperature range and body mass explained up to 50.5% of observed variation in mean species abundance. When realised niches are used to forecast responses to climate change, large positive and negative effects among species are predicted under future conditions, in contrast to the forecasts of minimal impacts on all species that are indicated by fundamental niche predictions.
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Affiliation(s)
- Brigitte Braschler
- DSI-NRF Centre of Excellence for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Matieland, South Africa.,Section of Conservation Biology, Department of Environmental Sciences, University of Basel, Basel, Switzerland
| | - Grant A Duffy
- School of Biological Sciences, Monash University, Clayton, Vic., Australia
| | - Erika Nortje
- DSI-NRF Centre of Excellence for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Matieland, South Africa
| | - Suzaan Kritzinger-Klopper
- DSI-NRF Centre of Excellence for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Matieland, South Africa
| | - Dorette du Plessis
- DSI-NRF Centre of Excellence for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Matieland, South Africa
| | - Natasha Karenyi
- DSI-NRF Centre of Excellence for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Matieland, South Africa
| | - Rachel I Leihy
- School of Biological Sciences, Monash University, Clayton, Vic., Australia
| | - Steven L Chown
- DSI-NRF Centre of Excellence for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Matieland, South Africa.,School of Biological Sciences, Monash University, Clayton, Vic., Australia
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13
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Phillips LM, Aitkenhead I, Janion-Scheepers C, King CK, McGeoch MA, Nielsen UN, Terauds A, Liu WPA, Chown SL. Basal tolerance but not plasticity gives invasive springtails the advantage in an assemblage setting. CONSERVATION PHYSIOLOGY 2020; 8:coaa049. [PMID: 32577288 PMCID: PMC7294889 DOI: 10.1093/conphys/coaa049] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 04/03/2020] [Accepted: 05/11/2020] [Indexed: 06/11/2023]
Abstract
As global climates change, alien species are anticipated to have a growing advantage relative to their indigenous counterparts, mediated through consistent trait differences between the groups. These insights have largely been developed based on interspecific comparisons using multiple species examined from different locations. Whether such consistent physiological trait differences are present within assemblages is not well understood, especially for animals. Yet, it is at the assemblage level that interactions play out. Here, we examine whether physiological trait differences observed at the interspecific level are also applicable to assemblages. We focus on the Collembola, an important component of the soil fauna characterized by invasions globally, and five traits related to fitness: critical thermal maximum, minimum and range, desiccation resistance and egg development rate. We test the predictions that the alien component of a local assemblage has greater basal physiological tolerances or higher rates, and more pronounced phenotypic plasticity than the indigenous component. Basal critical thermal maximum, thermal tolerance range, desiccation resistance, optimum temperature for egg development, the rate of development at that optimum and the upper temperature limiting egg hatching success are all significantly higher, on average, for the alien than the indigenous components of the assemblage. Outcomes for critical thermal minimum are variable. No significant differences in phenotypic plasticity exist between the alien and indigenous components of the assemblage. These results are consistent with previous interspecific studies investigating basal thermal tolerance limits and development rates and their phenotypic plasticity, in arthropods, but are inconsistent with results from previous work on desiccation resistance. Thus, for the Collembola, the anticipated advantage of alien over indigenous species under warming and drying is likely to be manifest in local assemblages, globally.
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Affiliation(s)
- Laura M Phillips
- School of Biological Sciences, Monash University, Victoria 3800, Australia
| | - Ian Aitkenhead
- School of Biological Sciences, Monash University, Victoria 3800, Australia
| | - Charlene Janion-Scheepers
- Iziko South African Museum, Cape Town 8001, South Africa
- Department of Biological Sciences, University of Cape Town, Rondebosch, Cape Town 7700, South Africa
| | - Catherine K King
- Australian Antarctic Division, Department of Agriculture, Water and the Environment, 203 Channel Highway, Kingston, Tasmania 7050, Australia
| | - Melodie A McGeoch
- School of Biological Sciences, Monash University, Victoria 3800, Australia
| | - Uffe N Nielsen
- Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, New South Wales, 2751, Australia
| | - Aleks Terauds
- Australian Antarctic Division, Department of Agriculture, Water and the Environment, 203 Channel Highway, Kingston, Tasmania 7050, Australia
| | - W P Amy Liu
- School of Biological Sciences, Monash University, Victoria 3800, Australia
| | - Steven L Chown
- School of Biological Sciences, Monash University, Victoria 3800, Australia
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14
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Contador T, Gañan M, Bizama G, Fuentes-Jaque G, Morales L, Rendoll J, Simoes F, Kennedy J, Rozzi R, Convey P. Assessing distribution shifts and ecophysiological characteristics of the only Antarctic winged midge under climate change scenarios. Sci Rep 2020; 10:9087. [PMID: 32493944 PMCID: PMC7270094 DOI: 10.1038/s41598-020-65571-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 01/06/2020] [Indexed: 11/30/2022] Open
Abstract
Parts of Antarctica were amongst the most rapidly changing regions of the planet during the second half of the Twentieth Century. Even so, today, most of Antarctica remains in the grip of continental ice sheets, with only about 0.2% of its overall area being ice-free. The continent's terrestrial fauna consists only of invertebrates, with just two native species of insects, the chironomid midges Parochlus steinenii and Belgica antarctica. We integrate ecophysiological information with the development of new high-resolution climatic layers for Antarctica, to better understand how the distribution of P. steinenii may respond to change over the next century under different IPCC climate change scenarios. We conclude that the species has the potential to expand its distribution to include parts of the west and east coasts of the Antarctic Peninsula and even coastal ice-free areas in parts of continental Antarctica. We propose P. steinenii as an effective native sentinel and indicator species of climate change in the Antarctic.
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Affiliation(s)
- Tamara Contador
- Sub-Antarctic Biocultural Conservation Program, Universidad de Magallanes, Punta Arenas, Chile.
- Millennium Nucleus of Invasive Salmonids (INVASAL), Concepción, Chile.
- Institute of Ecology and Biodiversity (IEB-Chile), Santiago de Chile, Chile.
| | - Melisa Gañan
- Sub-Antarctic Biocultural Conservation Program, Universidad de Magallanes, Punta Arenas, Chile.
| | - Gustavo Bizama
- Laboratory for Research in Environmental Sciences (LARES), Faculty of Agricultural Sciences, Department of Environmental Sciences and Natural Renewable Resources, University of Chile, Santiago, Chile
| | - Guillermo Fuentes-Jaque
- Laboratory for Research in Environmental Sciences (LARES), Faculty of Agricultural Sciences, Department of Environmental Sciences and Natural Renewable Resources, University of Chile, Santiago, Chile
| | - Luis Morales
- Laboratory for Research in Environmental Sciences (LARES), Faculty of Agricultural Sciences, Department of Environmental Sciences and Natural Renewable Resources, University of Chile, Santiago, Chile
| | - Javier Rendoll
- Sub-Antarctic Biocultural Conservation Program, Universidad de Magallanes, Punta Arenas, Chile
- Institute of Ecology and Biodiversity (IEB-Chile), Santiago de Chile, Chile
| | | | - James Kennedy
- Sub-Antarctic Biocultural Conservation Program, Universidad de Magallanes, Punta Arenas, Chile
- Department of Biological Sciences, University of North Texas, Texas, USA
| | - Ricardo Rozzi
- Sub-Antarctic Biocultural Conservation Program, Universidad de Magallanes, Punta Arenas, Chile
- Institute of Ecology and Biodiversity (IEB-Chile), Santiago de Chile, Chile
- Department of Philosophy and Religion Studies, University of North Texas, Texas, USA
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15
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Creating New Near-Surface Air Temperature Datasets to Understand Elevation-Dependent Warming in the Tibetan Plateau. REMOTE SENSING 2020. [DOI: 10.3390/rs12111722] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The Tibetan Plateau has been undergoing accelerated warming over recent decades, and is considered an indicator for broader global warming phenomena. However, our understanding of warming rates with elevation in complex mountain regions is incomplete. The most serious concern is the lack of high-quality near-surface air temperature (Tair) datasets in these areas. To address this knowledge gap, we developed an automated mapping framework for the estimation of seamless daily minimum and maximum Land Surface Temperatures (LSTs) for the Tibetan Plateau from the existing MODIS LST products for a long period of time (i.e., 2002–present). Specific machine learning methods were developed and linked with target-oriented validation and then applied to convert LST to Tair. Spatial variables in retrieving Tair, such as solar radiation and vegetation indices, were used in estimation of Tair, whereas MODIS LST products were mainly focused on temporal variation in surface air temperature. We validated our process using independent Tair products, revealing more reliable estimates on Tair; the R2 and RMSE at monthly scales generally fell in the range of 0.9–0.95 and 1–2 °C. Using these continuous and consistent Tair datasets, we found temperature increases in the elevation range between 2000–3000 m and 4000–5000 m, whereas the elevation interval at 6000–7000 m exhibits a cooling trend. The developed datasets, findings and methodology contribute to global studies on accelerated warming.
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16
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Ouisse T, Day E, Laville L, Hendrickx F, Convey P, Renault D. Effects of elevational range shift on the morphology and physiology of a carabid beetle invading the sub-Antarctic Kerguelen Islands. Sci Rep 2020; 10:1234. [PMID: 31988370 PMCID: PMC6985133 DOI: 10.1038/s41598-020-57868-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 11/22/2019] [Indexed: 11/13/2022] Open
Abstract
Climatic changes can induce geographic expansion and altitudinal shifts in the distribution of invasive species by offering more thermally suitable habitats. At the remote sub-Antarctic Kerguelen Islands, the predatory insect Merizodus soledadinus (Coleoptera: Carabidae), introduced in 1913, rapidly invaded coastal habitats. More recent colonisation of higher elevation habitats by this species could be underlain by their increased thermal suitability as the area has warmed. This study compared the effect of elevational range shift on the morphology and physiology of adult M. soledadinus sampled along two altitudinal transects (from the foreshore to 250 m a.s.l.) and a horizontal lowland transect orthogonal to the seashore (400 m length). Although high inter-individual and inter-transect variations in the traits examined were present, we observed that body mass of males and females tended to decrease with elevation, and that triglyceride contents decreased with distance from the shore. Moreover, protein contents of females as well as those of 26 metabolites were influenced significantly by distance to the foreshore. These results suggest that future climate change at the Kerguelen Islands will further assist the colonisation of lowland inland and higher altitude habitats by this aggressively invasive predator, by making previously sub-optimal habitats progressively more suitable.
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Affiliation(s)
- T Ouisse
- Université de Rennes 1, UMR CNRS 6553 Ecobio, 263 Avenue du Gal Leclerc, 35042, Rennes, cedex, France
| | - E Day
- Université de Rennes 1, UMR CNRS 6553 Ecobio, 263 Avenue du Gal Leclerc, 35042, Rennes, cedex, France
| | - L Laville
- Université de Rennes 1, UMR CNRS 6553 Ecobio, 263 Avenue du Gal Leclerc, 35042, Rennes, cedex, France
| | - F Hendrickx
- Ghent University, Department of Biology, terrestrial ecology unit, K.L. Ledeganckstraat 35, B-9000, Ghent, Belgium.,Royal Belgian Institute of Natural Sciences, Vautierstraat 29, B-1000, Brussels, Belgium
| | - P Convey
- British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge, CB3 0ET, United Kingdom
| | - D Renault
- Université de Rennes 1, UMR CNRS 6553 Ecobio, 263 Avenue du Gal Leclerc, 35042, Rennes, cedex, France. .,Institut Universitaire de France, 1 Rue Descartes, 75231, Paris, cedex 05, France.
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17
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Russell JC, Peace JE, Houghton MJ, Bury SJ, Bodey TW. Systematic prey preference by introduced mice exhausts the ecosystem on Antipodes Island. Biol Invasions 2020. [DOI: 10.1007/s10530-019-02194-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
AbstractHouse mice (Mus musculus) are a widespread invasive species on islands. Where they are the sole introduced mammal they can have particularly strong negative impacts on recipient ecosystems. House mice impacts have been documented on almost every component of the terrestrial ecosystem on Southern Ocean islands, including plants, invertebrates, birds and ecosystem function. We undertook a comprehensive study to determine the impacts of house mice on Antipodes Island, New Zealand. This study was done prior to mouse eradication to inform monitoring and restoration. We used invertebrate pitfall trapping on the main Antipodes Island and neighbouring mouse-free offshore islands together with mouse stomach contents and stable isotope analyses of mouse livers to examine dietary preferences. We identified directly impacted and consumed invertebrate Orders relative to their abundance and provided a comprehensive picture of resource flow and overlap in the invaded terrestrial ecosystem. The remote terrestrial ecosystem of Antipodes Island was tightly circumscribed with strong resource overlap. Mouse diet varied seasonally with resource availability, dominated by invertebrates and land birds in summer, and plants and seabirds in winter. Invertebrates that were preferentially preyed upon were Amphipoda, Lepidoptera and some species of Coleoptera. These patterns suggest the ecosystem is annually driven by a seasonal bottom-up resource pulse over summer, where mice are a selective predator, differentially preying on invertebrates relative to invertebrate abundance. Mice appear to be exhausting preferred prey as they systematically consume their way through the terrestrial ecosystem. Land bird diet also varied seasonally and some of these birds likely competed with mice for invertebrate prey. Eradication of mice from Antipodes Island should reduce the predation on invertebrates and reduce the effects of competition and predation on land birds. This should have flow-on effects to the abundance of invertebrates and endemic land bird sub-species of pipit and snipe.
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18
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Treasure AM, Chown SL. Phenotypic plasticity in locomotor performance of a monophyletic group of weevils accords with the warmer is better hypothesis. J Exp Biol 2019; 222:jeb.195255. [DOI: 10.1242/jeb.195255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 03/25/2019] [Indexed: 11/20/2022]
Abstract
Ectotherms may respond to variable environmental conditions by altering their phenotypes. Phenotypic plasticity was initially thought to be beneficial to an organism's physiological fitness. Several alternative hypotheses, have, however, been proposed with growing empirical support. In this study, we test the full suite of hypotheses by investigating acclimation responses of locomotor performance for nine populations of five species of sub-Antarctic weevils, using static and fluctuating temperatures. Species showed typical locomotion thermal performance curves with temperature of the maximum speed (Topt) ranging between 22.3±1.7°C (mean±s.e.) and 31.1±0.7°C. For most species Topt was not affected by acclimation. For maximum speed (Umax), significant, positive effects of acclimation were found for all species except a supralittoral one. Individuals acclimated to 0°C showed much lower values than the other two acclimation treatments (15°C and fluctuating 0-15°C). Performance breadth (the index of the breadth of the curve, Tbr) typically showed little response to acclimation. None of the traits of the supralittoral species were affected by acclimation treatment. Responses to stable and fluctuating temperature treatments were similar. Our findings also revealed that the mean estimated activation energy 0.40±0.015 eV (mean±s.e.) was lower than for other herbivores, the category to which these weevils belong, suggesting that some form of compensation in the rate-temperature relationship may be evident. Thus, we typically found support for the warmer is better hypothesis for acclimation of locomotor performance, though some compensation is evident.
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Affiliation(s)
- Anne M. Treasure
- Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
| | - Steven L. Chown
- School of Biological Sciences, Monash University, Victoria 3800, Australia
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