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Martinetto P, Alberti J, Becherucci ME, Cebrian J, Iribarne O, Marbà N, Montemayor D, Sparks E, Ward R. The blue carbon of southern southwest Atlantic salt marshes and their biotic and abiotic drivers. Nat Commun 2023; 14:8500. [PMID: 38135682 PMCID: PMC10746709 DOI: 10.1038/s41467-023-44196-w] [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: 07/04/2023] [Accepted: 12/04/2023] [Indexed: 12/24/2023] Open
Abstract
Coastal vegetated ecosystems are acknowledged for their capacity to sequester organic carbon (OC), known as blue C. Yet, blue C global accounting is incomplete, with major gaps in southern hemisphere data. It also shows a large variability suggesting that the interaction between environmental and biological drivers is important at the local scale. In southwest Atlantic salt marshes, to account for the space occupied by crab burrows, it is key to avoid overestimates. Here we found that southern southwest Atlantic salt marshes store on average 42.43 (SE = 27.56) Mg OC·ha-1 (40.74 (SE = 2.7) in belowground) and bury in average 47.62 g OC·m-2·yr-1 (ranging from 7.38 to 204.21). Accretion rates, granulometry, plant species and burrowing crabs were identified as the main factors in determining belowground OC stocks. These data lead to an updated global estimation for stocks in salt marshes of 185.89 Mg OC·ha-1 (n = 743; SE = 4.92) and a C burial rate of 199.61 g OC·m-2·yr-1 (n = 193; SE = 16.04), which are lower than previous estimates.
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Affiliation(s)
- Paulina Martinetto
- Laboratorio de Ecología, Instituto de Investigaciones Marinas y Costeras (IIMyC, UNMdP-CONICET), Juan B Justo 2550, Mar del Plata, (7600), Argentina.
| | - Juan Alberti
- Laboratorio de Ecología, Instituto de Investigaciones Marinas y Costeras (IIMyC, UNMdP-CONICET), Juan B Justo 2550, Mar del Plata, (7600), Argentina
| | - María Eugenia Becherucci
- Laboratorio de Ecología, Instituto de Investigaciones Marinas y Costeras (IIMyC, UNMdP-CONICET), Juan B Justo 2550, Mar del Plata, (7600), Argentina
| | - Just Cebrian
- Northern Gulf Institute, Mississippi State University, NOAA NCEI, 1021 Balch Blvd, Stennis Space Center, MS, 39529, USA
- "Vesta, PBC", 584 Castro St, #2054, San Francisco, CA, 94114-2512, USA
| | - Oscar Iribarne
- Laboratorio de Ecología, Instituto de Investigaciones Marinas y Costeras (IIMyC, UNMdP-CONICET), Juan B Justo 2550, Mar del Plata, (7600), Argentina
| | - Núria Marbà
- Global Change Research Group, IMEDEA (CSIC-UIB), Institut Mediterrani d'Estudis Avançats, Miquel Marquès 21, 07190, Esporles, Illes Balears, Spain
| | - Diana Montemayor
- Laboratorio de Ecología, Instituto de Investigaciones Marinas y Costeras (IIMyC, UNMdP-CONICET), Juan B Justo 2550, Mar del Plata, (7600), Argentina
| | - Eric Sparks
- Coastal Research and Extension Center, Mississippi State University, 1815 Popp's Ferry Rd., Biloxi, MS, 39532, USA
- Mississippi-Alabama Sea Grant Consortium, 703 East Beach Drive, Ocean Springs, MS, 39564, USA
| | - Raymond Ward
- School of Geography, Queen Mary University of London, Mile End Rd, Bethnal Green, London, E1 4NS, United Kingdom
- Institute of Agriculture and Environmental Sciences, Estonia University of Life Sciences, Kreutzwaldi 5, EE-51014, Tartu, Estonia
- Colégio de Estudos Avançados, Universidade Federal do Ceará, Campus do Pici, CEP 60455-760, Fortaleza, CE, Brasil
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2
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Xin R, Cheng Q, Chi X, Feng X, Zhang H, Wang Y, Duan M, Xie T, Song X, Yu Q, Fan Y, Huang L, Zhou F. Computational Characterization of Undifferentially Expressed Genes with Altered Transcription Regulation in Lung Cancer. Genes (Basel) 2023; 14:2169. [PMID: 38136991 PMCID: PMC10742656 DOI: 10.3390/genes14122169] [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: 10/01/2023] [Revised: 11/19/2023] [Accepted: 11/27/2023] [Indexed: 12/24/2023] Open
Abstract
A transcriptome profiles the expression levels of genes in cells and has accumulated a huge amount of public data. Most of the existing biomarker-related studies investigated the differential expression of individual transcriptomic features under the assumption of inter-feature independence. Many transcriptomic features without differential expression were ignored from the biomarker lists. This study proposed a computational analysis protocol (mqTrans) to analyze transcriptomes from the view of high-dimensional inter-feature correlations. The mqTrans protocol trained a regression model to predict the expression of an mRNA feature from those of the transcription factors (TFs). The difference between the predicted and real expression of an mRNA feature in a query sample was defined as the mqTrans feature. The new mqTrans view facilitated the detection of thirteen transcriptomic features with differentially expressed mqTrans features, but without differential expression in the original transcriptomic values in three independent datasets of lung cancer. These features were called dark biomarkers because they would have been ignored in a conventional differential analysis. The detailed discussion of one dark biomarker, GBP5, and additional validation experiments suggested that the overlapping long non-coding RNAs might have contributed to this interesting phenomenon. In summary, this study aimed to find undifferentially expressed genes with significantly changed mqTrans values in lung cancer. These genes were usually ignored in most biomarker detection studies of undifferential expression. However, their differentially expressed mqTrans values in three independent datasets suggested their strong associations with lung cancer.
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Affiliation(s)
- Ruihao Xin
- Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education, College of Computer Science and Technology, Jilin University, Changchun 130012, China; (R.X.); (Y.W.); (M.D.); (L.H.)
- Jilin Institute of Chemical Technology, College of Information and Control Engineering, Jilin 132000, China; (Q.C.); (X.C.); (H.Z.)
| | - Qian Cheng
- Jilin Institute of Chemical Technology, College of Information and Control Engineering, Jilin 132000, China; (Q.C.); (X.C.); (H.Z.)
| | - Xiaohang Chi
- Jilin Institute of Chemical Technology, College of Information and Control Engineering, Jilin 132000, China; (Q.C.); (X.C.); (H.Z.)
| | - Xin Feng
- School of Science, Jilin Institute of Chemical Technology, Jilin 132000, China;
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun 130012, China;
| | - Hang Zhang
- Jilin Institute of Chemical Technology, College of Information and Control Engineering, Jilin 132000, China; (Q.C.); (X.C.); (H.Z.)
| | - Yueying Wang
- Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education, College of Computer Science and Technology, Jilin University, Changchun 130012, China; (R.X.); (Y.W.); (M.D.); (L.H.)
| | - Meiyu Duan
- Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education, College of Computer Science and Technology, Jilin University, Changchun 130012, China; (R.X.); (Y.W.); (M.D.); (L.H.)
| | - Tunyang Xie
- Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA, UK;
| | - Xiaonan Song
- Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education, College of Software, Jilin University, Changchun 130012, China;
| | - Qiong Yu
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun 130012, China;
| | - Yusi Fan
- Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education, College of Software, Jilin University, Changchun 130012, China;
| | - Lan Huang
- Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education, College of Computer Science and Technology, Jilin University, Changchun 130012, China; (R.X.); (Y.W.); (M.D.); (L.H.)
| | - Fengfeng Zhou
- Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education, College of Computer Science and Technology, Jilin University, Changchun 130012, China; (R.X.); (Y.W.); (M.D.); (L.H.)
- School of Biology and Engineering, Guizhou Medical University, Guiyang 550025, China
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Benoit JB, McCluney KE, DeGennaro MJ, Dow JAT. Dehydration Dynamics in Terrestrial Arthropods: From Water Sensing to Trophic Interactions. ANNUAL REVIEW OF ENTOMOLOGY 2023; 68:129-149. [PMID: 36270273 PMCID: PMC9936378 DOI: 10.1146/annurev-ento-120120-091609] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Since the transition from water to land, maintaining water balance has been a key challenge for terrestrial arthropods. We explore factors that allow terrestrial arthropods to survive within a variably dry world and how they shape ecological interactions. Detection of water and hydration is critical for maintaining water content. Efficient regulation of internal water content is accomplished by excretory and osmoregulatory systems that balance water intake and loss. Biochemical and physiological responses are necessary as water content declines to prevent and repair the damage that occurs during dehydration. Desiccation avoidance can occur seasonally or daily via a move to more favorable areas. Dehydration and its avoidance have ecological impacts that extend beyond a single species to alter trophic interactions. As climate changes, evolutionary and ecological processes will be critical to species survival during drought.
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Affiliation(s)
- Joshua B Benoit
- Department of Biological Sciences, University of Cincinnati, Cincinnati, Ohio, USA;
| | - Kevin E McCluney
- Department of Biological Sciences, Bowling Green State University, Bowling Green, Ohio, USA;
| | - Matthew J DeGennaro
- Department of Biological Sciences, Florida International University and Biomolecular Sciences Institute, Miami, Florida, USA;
| | - Julian A T Dow
- Institute of Molecular, Cell and Systems Biology, University of Glasgow, United Kingdom;
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4
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McCluney KE. Disentangling the multiple effects of precipitation on arthropod biomass: A commentary on Newell et al. (2022). GLOBAL CHANGE BIOLOGY 2023; 29:294-295. [PMID: 36266748 DOI: 10.1111/gcb.16490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 08/16/2022] [Accepted: 09/12/2022] [Indexed: 06/16/2023]
Affiliation(s)
- Kevin E McCluney
- Department of Biological Sciences, Bowling Green State University, Bowling Green, Ohio, USA
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5
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Labra FA, San Martín VA, Jahnsen-Guzmán N, Fernández C, Zapata J, García-Huidobroro MR, Duarte C, García-Herrera C, Vivanco JF, Lardies MA, Lagos NA. Metabolic rate allometry in intertidal mussels across environmental gradients: The role of coastal carbonate system parameters in mediating the effects of latitude and temperature. MARINE POLLUTION BULLETIN 2022; 184:114149. [PMID: 36162293 DOI: 10.1016/j.marpolbul.2022.114149] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 09/12/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
We assess the role of direct and indirect effects of coastal environmental drivers (including the parameters of the carbonate system) on energy expenditure (MR) and body mass (M) of the intertidal mussel, Perumytilus purpuratus, across 10 populations distributed over 2800 km along the Southern Eastern Pacific (SEP) coast. We find biogeographic and local variation in carbonate system variables mediates the effects of latitude and temperature on metabolic rate allometry along the SEP coast. Also, the fitted Piecewise Structural Equation models (PSEM) have greater predictive ability (conditional R2 = 0.95) relative to the allometric scaling model (R2 = 0.35). The largest standardized coefficients for MR and M were determined by the influence of temperature and latitude, followed by pCO2, pH, total alkalinity, and salinity. Thus, physiological diversity of P. purpuratus along the SEP coast emerges as the result of direct and indirect effects of biogeographic and local environmental variables.
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Affiliation(s)
- Fabio A Labra
- Centro de Investigación e Innovación para el Cambio Climático, Facultad de Ciencias, Universidad Santo Tomás, Santiago, Chile.
| | - Valeska A San Martín
- Centro de Investigación e Innovación para el Cambio Climático, Facultad de Ciencias, Universidad Santo Tomás, Santiago, Chile
| | - Nicole Jahnsen-Guzmán
- Departamento de Ecología y Biodiversidad, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
| | - Carolina Fernández
- Departamento de Ciencias, Facultad de Artes Liberales, Universidad Adolfo Ibáñez, Santiago, Chile
| | - Javier Zapata
- Centro de Investigación e Innovación para el Cambio Climático, Facultad de Ciencias, Universidad Santo Tomás, Santiago, Chile
| | - M Roberto García-Huidobroro
- Centro de Investigación e Innovación para el Cambio Climático, Facultad de Ciencias, Universidad Santo Tomás, Santiago, Chile
| | - Cristián Duarte
- Departamento de Ecología y Biodiversidad, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
| | - Claudio García-Herrera
- Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Santiago de Chile, Santiago, Chile
| | - Juan F Vivanco
- Facultad de Ingeniería y Ciencias, Universidad Adolfo Ibáñez, Viña del Mar, Chile
| | - Marco A Lardies
- Departamento de Ciencias, Facultad de Artes Liberales, Universidad Adolfo Ibáñez, Santiago, Chile; Instituto Milenio de Socio-Ecología Costera - SECOS, Santiago, Chile
| | - Nelson A Lagos
- Centro de Investigación e Innovación para el Cambio Climático, Facultad de Ciencias, Universidad Santo Tomás, Santiago, Chile; Instituto Milenio de Socio-Ecología Costera - SECOS, Santiago, Chile
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6
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Gutiérrez JS, Moore JN, Donnelly JP, Dorador C, Navedo JG, Senner NR. Climate change and lithium mining influence flamingo abundance in the Lithium Triangle. Proc Biol Sci 2022; 289:20212388. [PMID: 35259988 PMCID: PMC8905151 DOI: 10.1098/rspb.2021.2388] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The development of technologies to slow climate change has been identified as a global imperative. Nonetheless, such 'green' technologies can potentially have negative impacts on biodiversity. We explored how climate change and the mining of lithium for green technologies influence surface water availability, primary productivity and the abundance of three threatened and economically important flamingo species in the 'Lithium Triangle' of the Chilean Andes. We combined climate and primary productivity data with remotely sensed measures of surface water levels and a 30-year dataset on flamingo abundance using structural equation modelling. We found that, regionally, flamingo abundance fluctuated dramatically from year-to-year in response to variation in surface water levels and primary productivity but did not exhibit any temporal trends. Locally, in the Salar de Atacama-where lithium mining is focused-we found that mining was negatively correlated with the abundance of two of the three flamingo species. These results suggest continued increases in lithium mining and declines in surface water could soon have dramatic effects on flamingo abundance across their range. Efforts to slow the expansion of mining and the impacts of climate change are, therefore, urgently needed to benefit local biodiversity and the local human economy that depends on it.
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Affiliation(s)
- Jorge S Gutiérrez
- Conservation Biology Research Group, Department of Anatomy, Cell Biology and Zoology, University of Extremadura, Badajoz 06006, Spain.,Ecology in the Anthropocene, Associated Unit CSIC-UEx, Faculty of Sciences, University of Extremadura, Badajoz 06006, Spain
| | - Johnnie N Moore
- Group For Quantitative Study of Snow and Ice, Department of Geosciences, University of Montana, 32 Campus Drive, Missoula, MT 59812, USA
| | - J Patrick Donnelly
- Intermountain West Joint Venture, US Fish and Wildlife Service, 1001 S. Higgins Avenue, Missoula, MT 59801, USA
| | - Cristina Dorador
- Departamento de Biotecnología, Facultad de Ciencias del Mar y Recursos Biológicos, Universidad de Antofagasta, Angamos 601, Antofagasta, Chile
| | - Juan G Navedo
- Ecology in the Anthropocene, Associated Unit CSIC-UEx, Faculty of Sciences, University of Extremadura, Badajoz 06006, Spain.,Bird Ecology Lab, Instituto de Ciencias Marinas y Limnológicas, Universidad Austral de Chile, Campus Isla Teja, Valdivia, Chile
| | - Nathan R Senner
- Department of Biological Sciences, University of South Carolina, 715 Sumter Street, Columbia, SC 29208, USA
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7
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Seasonal and temporal patterns of rainfall shape arthropod community composition and multi-trophic interactions in an arid environment. Sci Rep 2022; 12:3742. [PMID: 35260643 PMCID: PMC8904780 DOI: 10.1038/s41598-022-07716-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 02/23/2022] [Indexed: 11/25/2022] Open
Abstract
In arid and semi-arid ecosystems, rainfall and rainfall temporal distribution shape species communities and multi-trophic interactions. Whereas the relationship between climate change-induced decline of precipitation and plants is well know, there is little knowledge of these relationships with consumers, such as arthropods of different trophic levels. In a 6-year period we studied precipitation effects and microhabitat conditions on multi-trophic interactions of ground-dwelling arthropods in an arid savannah. We analysed the effects of seasonal rainfall, plant cover and soil texture on community composition and activity density of arthropods of different trophic levels and investigated the critical window of vegetation and occurrence arthropods in relation to rainfall. Our result show, that arthropod community composition was determined by seasonal rainfall and plant cover. Soil texture did not explain arthropod response sufficiently. Especially detritivorous arthropods were strongly affected by precipitation and can therefore serve as indicators of droughts. Further, multi-trophic interactions can better be explained by short-term rainfall pulses, rather than by seasonal patterns, with a window of seven days being most suitable to explain the influence of rainfall. Plant cover responded immediately after the rainfall, followed by herbivorous and predatory arthropods, and with a lag of 23 days omnivorous arthropods. This highlights the importance of short-term rain pulses for multi-trophic interactions among arthropods and emphasized the relevance of studying detailed precipitation effects for the arthropod diversity and ecosystem stability in arid ecosystems.
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9
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Le Coeur C, Storkey J, Ramula S. Population responses to observed climate variability across multiple organismal groups. OIKOS 2021. [DOI: 10.1111/oik.07371] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Christie Le Coeur
- Dept of Biology, Faculty of Science and Engineering, Univ. of Turku Turku Finland
| | - Jonathan Storkey
- Sustainable Agricultural Sciences, Rothamsted Research Harpenden Hertfordshire UK
| | - Satu Ramula
- Dept of Biology, Faculty of Science and Engineering, Univ. of Turku Turku Finland
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10
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Labaude S, Cézilly F, De Marco L, Rigaud T. Increased temperature has no consequence for behavioral manipulation despite effects on both partners in the interaction between a crustacean host and a manipulative parasite. Sci Rep 2020; 10:11670. [PMID: 32669670 PMCID: PMC7363812 DOI: 10.1038/s41598-020-68577-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 06/12/2020] [Indexed: 11/10/2022] Open
Abstract
Parasites alter many traits of their hosts. In particular, parasites known as "manipulative" may increase their probability of transmission by inducing phenotypic alterations in their intermediate hosts. Although parasitic-induced alterations can modify species' ecological roles, the proximate factors modulating this phenomenon remain poorly known. As temperature is known to affect host-parasite associations, understanding its precise impact has become a major challenge in a context of global warming. Gammarids are ecologically important freshwater crustaceans and serve as intermediate hosts for several acanthocephalan species. These parasites induce multiple effects on gammarids, including alterations of their behavior, ultimately leading to modifications in their functional role. Here, experimental infections were used to assess the effect of two temperatures on several traits of the association between Gammarus pulex and its acanthocephalan parasite Pomphorhynchus laevis. Elevated temperature affected hosts and parasites in multiple ways (decreased host survival, increased gammarids activity, faster parasites development and proboscis eversion). However, behavioral manipulation was unaffected by temperature. These results suggest that predicted change in temperature may have little consequences on the trophic transmission of parasites through changes in manipulation, although it may modify it through increased infection success and faster parasites development.
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Affiliation(s)
- Sophie Labaude
- Université de Bourgogne Franche-Comté, UMR CNRS 6282 Biogéosciences, Dijon, France.
- Laboratoire "Génétique Evolutive Expérimentale", Institut de Biologie de L'Ecole Normale Supérieure (IBENS), Paris, France.
| | - Frank Cézilly
- Université de Bourgogne Franche-Comté, UMR CNRS 6282 Biogéosciences, Dijon, France
| | - Lila De Marco
- Université de Bourgogne Franche-Comté, UMR CNRS 6282 Biogéosciences, Dijon, France
| | - Thierry Rigaud
- Université de Bourgogne Franche-Comté, UMR CNRS 6282 Biogéosciences, Dijon, France
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Bruckerhoff LA, Connell RK, Guinnip JP, Adhikari E, Godar A, Gido KB, Boyle AW, Hope AG, Joern A, Welti E. Harmony on the prairie? Grassland plant and animal community responses to variation in climate across land-use gradients. Ecology 2020; 101:e02986. [PMID: 31961449 DOI: 10.1002/ecy.2986] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 12/11/2019] [Accepted: 12/20/2019] [Indexed: 11/12/2022]
Abstract
Human induced climate and land-use change are severely impacting global biodiversity, but how community composition and richness of multiple taxonomic groups change in response to local drivers and whether these responses are synchronous remains unclear. We used long-term community-level data from an experimentally manipulated grassland to assess the relative influence of climate and land use as drivers of community structure of four taxonomic groups: birds, mammals, grasshoppers, and plants. We also quantified the synchrony of responses among taxonomic groups across land-use gradients and compared climatic drivers of community structure across groups. All four taxonomic groups responded strongly to land use (fire frequency and grazing), while responses to climate variability were more pronounced in grasshoppers and small mammals. Animal groups exhibited asynchronous responses across all land-use treatments, but plant and animal groups, especially birds, exhibited synchronous responses in composition. Asynchrony was attributed to taxonomic groups responding to different components of climate variability, including both current climate conditions and lagged effects from the previous year. Data-driven land management strategies are crucial for sustaining native biodiversity in grassland systems, but asynchronous responses of taxonomic groups to climate variability across land-use gradients highlight a need to incorporate response heterogeneity into management planning.
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Affiliation(s)
- Lindsey A Bruckerhoff
- Division of Biology, Kansas State University, 116 Ackert Hall, Manhattan, Kansas, 66506, USA
| | - R Kent Connell
- Division of Biology, Kansas State University, 116 Ackert Hall, Manhattan, Kansas, 66506, USA
| | - James P Guinnip
- Division of Biology, Kansas State University, 116 Ackert Hall, Manhattan, Kansas, 66506, USA
| | - Elina Adhikari
- Department of Plant Pathology, Kansas State University, 4024 Throckmorton PSC, Manhattan, Kansas, 66506, USA
| | - Alixandra Godar
- Division of Biology, Kansas State University, 116 Ackert Hall, Manhattan, Kansas, 66506, USA
| | - Keith B Gido
- Division of Biology, Kansas State University, 116 Ackert Hall, Manhattan, Kansas, 66506, USA
| | - Alice W Boyle
- Division of Biology, Kansas State University, 116 Ackert Hall, Manhattan, Kansas, 66506, USA
| | - Andrew G Hope
- Division of Biology, Kansas State University, 116 Ackert Hall, Manhattan, Kansas, 66506, USA
| | - Anthony Joern
- Division of Biology, Kansas State University, 116 Ackert Hall, Manhattan, Kansas, 66506, USA
| | - Ellen Welti
- Division of Biology, Kansas State University, 116 Ackert Hall, Manhattan, Kansas, 66506, USA.,Geographical Ecology Group, Department of Biology, University of Oklahoma, Norman, Oklahoma, USA
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12
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Alexander NB, Statham MJ, Sacks BN, Bean WT. Generalist dispersal and gene flow of an endangered keystone specialist (Dipodomys ingens). J Mammal 2019. [DOI: 10.1093/jmammal/gyz118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Movement ecology and dispersal capabilities inherently drive genetic structure across landscapes. Through understanding dispersal and gene flow of giant kangaroo rats (Dipodomys ingens), conservation efforts can be focused, and we can further understand how genetic structure persists in this highly endemic small mammal. Here, we genetically identify parent–offspring and sibship relationships among 239 giant kangaroo rats using 15 microsatellites in the northern part of the species range and describe the individual genetic-spatial variation using a Moran eigenvector map (MEM). We further employ two landscape genetic analyses (isolation by resistance [IBR] and least cost paths [LCPs]) and two individual-based genetic metrics (Dps and a codominant marker distance from GenAlEx) to determine landscape factors (precipitation, slope, vegetation community, and roads) that influence gene flow. We found 19 pairs of related individuals, of which 18 were less than 250 m apart, but one sibling pair was 5.52 km apart, suggesting greater dispersal capabilities than previously noted. We found hierarchal spatial genetic structure using a MEM, with 3–4 genetically similar regions and two genetically similar subregions. Finally, we found low correlative strength between landscape features and gene flow. IBR consistently outperformed LCPs, and there was evidence that regions with 250–350 mm of precipitation and slope ≤ 5° promoted connectivity. We recommend that managers focus on habitat protection rather than corridor maintenance, with the caveat that anthropogenic factors were minimally considered in this study.
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Affiliation(s)
- Nathan B Alexander
- Department of Natural Resources and Environmental Sciences, University of Illinois, Urbana, IL, USA
- Department of Wildlife, Humboldt State University, Arcata, CA, USA
| | - Mark J Statham
- Mammalian Ecology and Conservation Unit, Veterinary Genetics Laboratory, University of California, Davis, CA, USA
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, CA, USA
| | - Benjamin N Sacks
- Mammalian Ecology and Conservation Unit, Veterinary Genetics Laboratory, University of California, Davis, CA, USA
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, CA, USA
| | - William T Bean
- Department of Wildlife, Humboldt State University, Arcata, CA, USA
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13
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Grimm‐Seyfarth A, Mihoub J, Henle K. Functional traits determine the different effects of prey, predators, and climatic extremes on desert reptiles. Ecosphere 2019. [DOI: 10.1002/ecs2.2865] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Affiliation(s)
- Annegret Grimm‐Seyfarth
- Department of Conservation Biology UFZ – Helmholtz Centre for Environmental Research Permoserstraße 15 04318 Leipzig Germany
- Plant Ecology and Nature Conservation University of Potsdam Am Mühlenberg 3 14476 Potsdam Germany
| | - Jean‐Baptiste Mihoub
- Department of Conservation Biology UFZ – Helmholtz Centre for Environmental Research Permoserstraße 15 04318 Leipzig Germany
- UPMC Université Paris 06 Muséum National d'Histoire Naturelle CNRS CESCO UMR 7204 Sorbonne Universités Paris France
| | - Klaus Henle
- Department of Conservation Biology UFZ – Helmholtz Centre for Environmental Research Permoserstraße 15 04318 Leipzig Germany
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Thomsen SK, Green DJ. Predator-mediated effects of severe drought associated with poor reproductive success of a seabird in a cross-ecosystem cascade. GLOBAL CHANGE BIOLOGY 2019; 25:1642-1652. [PMID: 30773758 DOI: 10.1111/gcb.14595] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Accepted: 11/24/2018] [Indexed: 06/09/2023]
Abstract
Despite the profound impacts of drought on terrestrial productivity in coastal arid ecosystems, only a few studies have addressed how drought can influence ecological cascades across ecosystem boundaries. In this study, we examine the consequences of rainfall pulses and drought that subsequently impact the breeding success of a threatened nocturnal seabird, the Scripps's Murrelet (Synthliboramphus scrippsi). On an island off the coast of southern California, the main cause of reduced nest success for one of their largest breeding colonies is egg predation by an endemic deer mouse (Peromyscus maniculatus elusus). Mice on the island have an opportunistic diet of primarily terrestrial sources, but drastic declines in terrestrial productivity from drought might be expected to increase their reliance on marine resources, including murrelet eggs. We compiled data on terrestrial and marine productivity between 1983 and 2013 to determine how conditions in these ecosystems influence murrelet nest success. We found that the severity of drought had the strongest negative impact on murrelet nest success. We calculated that the reduction in fecundity during drought years due to increased egg predation by mice was substantial enough to produce a declining population growth rate. Nest success was much higher under normal or high rainfall conditions, depending on whether oceanic conditions were favorable to murrelets. Therefore, the more frequent and severe drought that is projected for this region could lead to an increased risk of murrelet population decline on this island. Our study highlights the need for understanding how species interactions will change through the effects of increasing drought and altered rainfall regimes under global change.
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Affiliation(s)
- Sarah K Thomsen
- Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada
| | - David J Green
- Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada
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Leinbach IL, McCluney KE, Sabo JL. Predator water balance alters intraguild predation in a streamside food web. Ecology 2019; 100:e02635. [DOI: 10.1002/ecy.2635] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 11/09/2018] [Accepted: 12/20/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Israel L. Leinbach
- School of Life Sciences Arizona State University Tempe Arizona USA
- U.S. Forest Service U.S. Department of Agriculture Experimental Agriculture Station Hilo Hawaii USA
| | - Kevin E. McCluney
- School of Life Sciences Arizona State University Tempe Arizona USA
- Department of Biological Sciences Bowling Green State University Bowling Green Ohio USA
| | - John L. Sabo
- School of Life Sciences Arizona State University Tempe Arizona USA
- Future H2O, Knowledge Enterprise Development Arizona State University Tempe Arizona USA
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Pagès JF, Jenkins SR, Bouma TJ, Sharps E, Skov MW. Opposing Indirect Effects of Domestic Herbivores on Saltmarsh Erosion. Ecosystems 2018. [DOI: 10.1007/s10021-018-0322-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Thomsen SK, Mazurkiewicz DM, Stanley TR, Green DJ. El Niño/Southern Oscillation-driven rainfall pulse amplifies predation by owls on seabirds via apparent competition with mice. Proc Biol Sci 2018; 285:rspb.2018.1161. [PMID: 30355706 DOI: 10.1098/rspb.2018.1161] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 10/02/2018] [Indexed: 11/12/2022] Open
Abstract
Most approaches for assessing species vulnerability to climate change have focused on direct impacts via abiotic changes rather than indirect impacts mediated by changes in species interactions. Changes in rainfall regimes may influence species interactions from the bottom-up by increasing primary productivity in arid environments, but subsequently lead to less predictable top-down effects. Our study demonstrates how the effects of an EL Niño/Southern Oscillation (ENSO)-driven rainfall pulse ricochets along a chain of interactions between marine and terrestrial food webs, leading to enhanced predation of a vulnerable marine predator on its island breeding grounds. On Santa Barbara Island, barn owls (Tyto alba) are the main predator of a nocturnal seabird, the Scripps's murrelet (Synthliboramphus scrippsi), as well as an endemic deer mouse. We followed the links between rainfall, normalized difference vegetation index and subsequent peaks in mouse and owl abundance. After the mouse population declined steeply, there was approximately 15-fold increase in the number of murrelets killed by owls. We also simulated these dynamics with a mathematical model and demonstrate that bottom-up resource pulses can lead to subsequent declines in alternative prey. Our study highlights the need for understanding how species interactions will change with shifting rainfall patterns through the effects of ENSO under global change.
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Affiliation(s)
- Sarah K Thomsen
- Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6
| | | | - Thomas R Stanley
- US Geological Survey, Fort Collins Science Center, Fort Collins, CO 80526, USA
| | - David J Green
- Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6
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Shrub encroachment, productivity pulses, and core-transient dynamics of Chihuahuan Desert rodents. Ecosphere 2018. [DOI: 10.1002/ecs2.2330] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Greenville AC, Wardle GM, Dickman CR. Desert mammal populations are limited by introduced predators rather than future climate change. ROYAL SOCIETY OPEN SCIENCE 2017; 4:170384. [PMID: 29291051 PMCID: PMC5717625 DOI: 10.1098/rsos.170384] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 10/04/2017] [Indexed: 05/19/2023]
Abstract
Climate change is predicted to place up to one in six species at risk of extinction in coming decades, but extinction probability is likely to be influenced further by biotic interactions such as predation. We use structural equation modelling to integrate results from remote camera trapping and long-term (17-22 years) regional-scale (8000 km2) datasets on vegetation and small vertebrates (greater than 38 880 captures) to explore how biotic processes and two key abiotic drivers influence the structure of a diverse assemblage of desert biota in central Australia. We use our models to predict how changes in rainfall and wildfire are likely to influence the cover and productivity of the dominant vegetation and the impacts of predators on their primary rodent prey over a 100-year timeframe. Our results show that, while vegetation cover may decline due to climate change, the strongest negative effect on prey populations in this desert system is top-down suppression from introduced predators.
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Affiliation(s)
- Aaron C. Greenville
- Desert Ecology Research Group, School of Life and Environmental Sciences, University of Sydney, Sydney, Australia
- Long Term Ecological Research Network, Terrestrial Ecosystem Research Network, St Lucia, Australia
- Author for correspondence: Aaron C. Greenville e-mail:
| | - Glenda M. Wardle
- Desert Ecology Research Group, School of Life and Environmental Sciences, University of Sydney, Sydney, Australia
- Long Term Ecological Research Network, Terrestrial Ecosystem Research Network, St Lucia, Australia
| | - Chris R. Dickman
- Desert Ecology Research Group, School of Life and Environmental Sciences, University of Sydney, Sydney, Australia
- Long Term Ecological Research Network, Terrestrial Ecosystem Research Network, St Lucia, Australia
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McCluney KE. Implications of animal water balance for terrestrial food webs. CURRENT OPINION IN INSECT SCIENCE 2017; 23:13-21. [PMID: 29129277 DOI: 10.1016/j.cois.2017.06.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 06/10/2017] [Accepted: 06/27/2017] [Indexed: 06/07/2023]
Abstract
Recent research has documented shifts in per capita trophic interactions and food webs in response to changes in environmental moisture, from the top-down (consumers to plants), rather than solely bottom-up (plants to consumers). These responses may be predictable from effects of physiological, behavioral, and ecological traits on animal water balance, although predictions could be modified by energy or nutrient requirements, the risk of predation, population-level responses, and bottom-up effects. Relatively little work has explicitly explored food web effects of changes in animal water balance, despite the likelihood of widespread relevance, including during periodic droughts in mesic locations, where taxa may lack adaptations for water conservation. More research is needed, particularly in light of climate change and hydrological alteration.
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Affiliation(s)
- Kevin E McCluney
- Department of Biological Sciences, Bowling Green State University, Bowling Green, OH, United States.
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