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Sakio H, Kon A, Kubo M, Nakano Y. Long‐term fluctuations and mechanisms of seed production of riparian tree canopy species. Ecol Res 2023. [DOI: 10.1111/1440-1703.12393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Affiliation(s)
- Hitoshi Sakio
- Sado Island Center for Ecological Sustainability Niigata University 94‐2 Koda Sado Niigata 952‐2206 Japan
| | - Ayumi Kon
- Faculty of Agriculture Niigata University 8050 Ikarashi 2‐no‐cho Nishi‐ku Niigata 950‐2181 Japan
- Green Sangyo Co., Ltd 2‐2‐10 Kandoji Chuo‐ku Niigata 950‐0983 Japan
| | - Masako Kubo
- Faculty of Life and Environmental Science Shimane University 1060 Nishikawatsu‐cho Matsue Shimane 690‐8504 Japan
| | - Yosuke Nakano
- Tadami Beech Center Machishita 2590, Tadami, Tadami‐machi Minamiaizu‐gun Fukushima 968‐0421 Japan
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2
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Vacchiano G, Pesendorfer MB, Conedera M, Gratzer G, Rossi L, Ascoli D. Natural disturbances and masting: from mechanisms to fitness consequences. Philos Trans R Soc Lond B Biol Sci 2021; 376:20200384. [PMID: 34657468 PMCID: PMC8520777 DOI: 10.1098/rstb.2020.0384] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/20/2021] [Indexed: 11/12/2022] Open
Abstract
The timing of seed production and release is highly relevant for successful plant reproduction. Ecological disturbances, if synchronized with reproductive effort, can increase the chances of seeds and seedlings to germinate and establish. This can be especially true under variable and synchronous seed production (masting). Several observational studies have reported worldwide evidence for co-occurrence of disturbances and seed bumper crops in forests. Here, we review the evidence for interaction between disturbances and masting in global plant communities; we highlight feedbacks between these two ecological processes and posit an evolutionary pathway leading to the selection of traits that allow trees to synchronize seed crops with disturbances. Finally, we highlight relevant questions to be tested on the functional and evolutionary relationship between disturbances and masting. This article is part of the theme issue 'The ecology and evolution of synchronized seed production in plants'.
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Affiliation(s)
- Giorgio Vacchiano
- Department of Agricultural and Environmental Sciences, University of Milan, Milano, Italy
| | - Mario B. Pesendorfer
- Institute of Forest Ecology, Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Marco Conedera
- WSL Swiss Federal Institute for Forest, Snow and Landscape Research, Cadenazzo, Switzerland
| | - Georg Gratzer
- Institute of Forest Ecology, Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Lorenzo Rossi
- Department of Agricultural and Environmental Sciences, University of Milan, Milano, Italy
| | - Davide Ascoli
- Department of Agricultural, Forest and Food Sciences, University of Torino, Turin, Italy
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3
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Abstract
Although it has long been recognized that seed production by many forest trees varies greatly from year to year, masting (along with 'mast fruiting', 'mast seeding' and 'masting behaviour') as a concept referring to such variability is a relatively recent development. Here, I provide a brief history of masting research, highlighting some of the early contributions by foresters, zoologists and others that paved the way for the burgeoning number of studies currently being conducted by researchers around the world. Of particular current interest is work attempting to understand the proximate mechanisms, evolutionary drivers and community effects of this important ecological phenomenon as well as the ways that climate change may influence masting behaviour in the future. This article is part of the theme issue 'The ecology and evolution of synchronized seed production in plants'.
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Affiliation(s)
- Walter D Koenig
- Hastings Natural History Reservation, University of California Berkeley, Carmel Valley, CA 93924, USA.,Cornell Lab of Ornithology, Cornell University, Ithaca, NY 14850, USA
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Ascoli D, Hacket-Pain A, Pearse IS, Vacchiano G, Corti S, Davini P. Modes of climate variability bridge proximate and evolutionary mechanisms of masting. Philos Trans R Soc Lond B Biol Sci 2021; 376:20200380. [PMID: 34657463 PMCID: PMC8520781 DOI: 10.1098/rstb.2020.0380] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/20/2021] [Indexed: 11/12/2022] Open
Abstract
There is evidence that variable and synchronous reproduction in seed plants (masting) correlates to modes of climate variability, e.g. El Niño Southern Oscillation and North Atlantic Oscillation. In this perspective, we explore the breadth of knowledge on how climate modes control reproduction in major masting species throughout Earth's biomes. We posit that intrinsic properties of climate modes (periodicity, persistence and trends) drive interannual and decadal variability of plant reproduction, as well as the spatial extent of its synchrony, aligning multiple proximate causes of masting through space and time. Moreover, climate modes force lagged but in-phase ecological processes that interact synergistically with multiple stages of plant reproductive cycles. This sets up adaptive benefits by increasing offspring fitness through either economies of scale or environmental prediction. Community-wide links between climate modes and masting across plant taxa suggest an evolutionary role of climate variability. We argue that climate modes may 'bridge' proximate and ultimate causes of masting selecting for variable and synchronous reproduction. The future of such interaction is uncertain: processes that improve reproductive fitness may remain coupled with climate modes even under changing climates, but chances are that abrupt global warming will affect Earth's climate modes so rapidly as to alter ecological and evolutionary links. This article is part of the theme issue 'The ecology and evolution of synchronized seed production in plants'.
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Affiliation(s)
- Davide Ascoli
- Department DISAFA, University of Torino (IT), Torino TO, Italy
| | - Andrew Hacket-Pain
- Department of Geography and Planning, School of Environmental Sciences, University of Liverpool (UK), UK
| | - Ian S. Pearse
- Fort Collins Science Center, US Geological Survey, Fort Collins, CO, USA
| | | | - Susanna Corti
- Istituto di Scienze dell'Atmosfera e del Clima, Consiglio Nazionale delle Ricerche (CNR-ISAC), Bologna, Italy
| | - Paolo Davini
- Istituto di Scienze dell'Atmosfera e del Clima, Consiglio Nazionale delle Ricerche (CNR-ISAC), Torino, Italy
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5
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Wright BR. Evidence that predator satiation drives reproductive synchrony in the desert masting grass, soft spinifex (
Triodia pungens
). AUSTRAL ECOL 2021. [DOI: 10.1111/aec.13119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Boyd R. Wright
- Botany, School of Environmental and Rural Science University of New England Armidale New South Wales Australia
- School of Agriculture and Food Science University of Queensland St Lucia Queensland Australia
- Department of Environment, Parks and Water Security Alice Springs Herbarium, Northern Territory Government Alice Springs Northern Territory Australia
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6
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Merganičová K, Merganič J, Lehtonen A, Vacchiano G, Sever MZO, Augustynczik ALD, Grote R, Kyselová I, Mäkelä A, Yousefpour R, Krejza J, Collalti A, Reyer CPO. Forest carbon allocation modelling under climate change. TREE PHYSIOLOGY 2019; 39:1937-1960. [PMID: 31748793 PMCID: PMC6995853 DOI: 10.1093/treephys/tpz105] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 06/03/2019] [Accepted: 09/24/2019] [Indexed: 05/19/2023]
Abstract
Carbon allocation plays a key role in ecosystem dynamics and plant adaptation to changing environmental conditions. Hence, proper description of this process in vegetation models is crucial for the simulations of the impact of climate change on carbon cycling in forests. Here we review how carbon allocation modelling is currently implemented in 31 contrasting models to identify the main gaps compared with our theoretical and empirical understanding of carbon allocation. A hybrid approach based on combining several principles and/or types of carbon allocation modelling prevailed in the examined models, while physiologically more sophisticated approaches were used less often than empirical ones. The analysis revealed that, although the number of carbon allocation studies over the past 10 years has substantially increased, some background processes are still insufficiently understood and some issues in models are frequently poorly represented, oversimplified or even omitted. Hence, current challenges for carbon allocation modelling in forest ecosystems are (i) to overcome remaining limits in process understanding, particularly regarding the impact of disturbances on carbon allocation, accumulation and utilization of nonstructural carbohydrates, and carbon use by symbionts, and (ii) to implement existing knowledge of carbon allocation into defence, regeneration and improved resource uptake in order to better account for changing environmental conditions.
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Affiliation(s)
- Katarína Merganičová
- Czech University of Life Sciences, Prague, Faculty of Forestry and Wood Sciences, Kamýcká 129, 16500 Praha-Suchdol, Czech Republic
- Technical University Zvolen, Forestry Faculty, T. G. Masaryka 24, 96053 Zvolen, Slovakia
| | - Ján Merganič
- Technical University Zvolen, Forestry Faculty, T. G. Masaryka 24, 96053 Zvolen, Slovakia
| | - Aleksi Lehtonen
- The Finnish Forest Research Institute - Luke, PO Box 18 (Jokiniemenkuja 1), FI-01301 Vantaa, Finland
| | - Giorgio Vacchiano
- Università degli Studi di Milano, DISAA. Via Celoria 2, 20132 Milano, Italy
| | - Maša Zorana Ostrogović Sever
- Croatian Forest Research Institute, Department for forest management and forestry economics, Cvjetno naselje 41, 10450 Jastrebarsko, Croatia
| | | | - Rüdiger Grote
- Institute of Meteorology and Climate Research (IMK-IFU), Karlsruhe Institute of Technology, Garmisch-Partenkirchen, Germany
| | - Ina Kyselová
- Global Change Research Institute CAS, Bělidla 986/4a, 603 00 Brno, Czech Republic
| | - Annikki Mäkelä
- University of Helsinki, Department of Forest Science, Latokartanonkaari 7, P.O. Box 27, 00014 Helsinki, Finland
| | - Rasoul Yousefpour
- University of Freiburg, Tennenbacher Str. 4 (2. OG), D-79106 Freiburg, Germany
| | - Jan Krejza
- Global Change Research Institute CAS, Bělidla 986/4a, 603 00 Brno, Czech Republic
| | - Alessio Collalti
- National Research Council of Italy, Institute for Agriculture and Forestry Systems in the Mediterranean (CNR-ISAFOM), 87036 Rende, Italy
- Department of Innovation in Biological, Agro-food and Forest Systems, University of Tuscia, 01100 Viterbo, Italy
| | - Christopher P O Reyer
- Potsdam Institute for Climate Impact Research, Telegraphenberg, PO Box 601203, D-14473 Potsdam, Germany
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8
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Inter-annual and decadal changes in teleconnections drive continental-scale synchronization of tree reproduction. Nat Commun 2017; 8:2205. [PMID: 29263383 PMCID: PMC5738406 DOI: 10.1038/s41467-017-02348-9] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 11/22/2017] [Indexed: 11/08/2022] Open
Abstract
Climate teleconnections drive highly variable and synchronous seed production (masting) over large scales. Disentangling the effect of high-frequency (inter-annual variation) from low-frequency (decadal trends) components of climate oscillations will improve our understanding of masting as an ecosystem process. Using century-long observations on masting (the MASTREE database) and data on the Northern Atlantic Oscillation (NAO), we show that in the last 60 years both high-frequency summer and spring NAO, and low-frequency winter NAO components are highly correlated to continent-wide masting in European beech and Norway spruce. Relationships are weaker (non-stationary) in the early twentieth century. This finding improves our understanding on how climate variation affects large-scale synchronization of tree masting. Moreover, it supports the connection between proximate and ultimate causes of masting: indeed, large-scale features of atmospheric circulation coherently drive cues and resources for masting, as well as its evolutionary drivers, such as pollination efficiency, abundance of seed dispersers, and natural disturbance regimes.
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9
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Han Q, Kabeya D. Recent developments in understanding mast seeding in relation to dynamics of carbon and nitrogen resources in temperate trees. Ecol Res 2017. [DOI: 10.1007/s11284-017-1494-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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10
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Allen RB, Millard P, Richardson SJ. A Resource Centric View of Climate and Mast Seeding in Trees. PROGRESS IN BOTANY VOL. 79 2017. [DOI: 10.1007/124_2017_8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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11
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Davi H, Cailleret M, Restoux G, Amm A, Pichot C, Fady B. Disentangling the factors driving tree reproduction. Ecosphere 2016. [DOI: 10.1002/ecs2.1389] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Affiliation(s)
- Hendrik Davi
- Ecologie des Forêts Méditerranéennes, UR 629 INRA, URFM Domaine Saint Paul, Site Agroparc F‐84914 Avignon, Cedex 9 France
| | - Maxime Cailleret
- Forest Ecology, Department of Environmental Sciences ETH Zurich ETH‐Zentrum, CHN G77, Universitätstrasse 16 CH‐8092 Zürich Switzerland
| | - Gwendal Restoux
- AgroParisTech 16 rue Claude Bernard F‐75231 Paris 05 France
- INRA, UMR GABI F‐78350 Jouy‐en‐Josas France
| | | | - Christian Pichot
- Ecologie des Forêts Méditerranéennes, UR 629 INRA, URFM Domaine Saint Paul, Site Agroparc F‐84914 Avignon, Cedex 9 France
| | - Bruno Fady
- Ecologie des Forêts Méditerranéennes, UR 629 INRA, URFM Domaine Saint Paul, Site Agroparc F‐84914 Avignon, Cedex 9 France
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Trout RC, Brooks S, Morris P. Nest box usage by old edible dormice (Glis glis) in breeding and non-breeding years. FOLIA ZOOLOGICA 2015. [DOI: 10.25225/fozo.v64.i4.a5.2015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Roger C. Trout
- Rabbitwise-plus Consultancy, Holtside, Batts Corner, Dockenfield, Farnham, Surrey, GU 10 4EX, U.K.
| | - Sarah Brooks
- 12 Greenacre Drive, Wyke, Bradford, West Yorkshire BD12 9DH, U.K
| | - Pat Morris
- West mains, London Road, Ascot Berkshire, SL5 7DG , U.K
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13
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14
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Webster CR, Jenkins MA, Poznanovic AJ. Spatial patterning and floral synchrony among trillium populations with contrasting histories of herbivory. PeerJ 2015; 3:e782. [PMID: 25737821 PMCID: PMC4338797 DOI: 10.7717/peerj.782] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Accepted: 01/31/2015] [Indexed: 11/20/2022] Open
Abstract
We investigated the spatial patterning and floral synchrony within and among populations of a non-clonal, forest understory herb, Trillium catesbaei. Two populations of T. catesbaei within Great Smoky Mountains National Park were monitored for five years: Cades Cove (high deer abundance) and Whiteoak Sink (low deer abundance). All individuals within each population were mapped during year one and five. Only flowering and single-leaf juveniles were mapped during intervening years. Greater distances between flowering plants (plants currently in flower) and substantially lower population densities and smaller patch sizes were observed at Cades Cove versus Whiteoak Sink. However, with the exception of flowering plants, contrasting histories of herbivory did not appear to fundamentally alter the spatial patterning of the T. catesbaei population at Cades Cove, an area with a long and well-documented history of deer overabundance. Regardless of browse history, non-flowering life stages were significantly clustered at all spatial scales examined. Flowering plants were clustered in all years at Whiteoak Sink, but more often randomly distributed at Cades Cove, possibly as a result of their lower abundance. Between years, however, there was a positive spatial association between the locations of flowering plants at both sites. Flowering rate was synchronous between sites, but lagged a year behind favorable spring growing conditions, which likely allowed plants to allocate photosynthate from a favorable year towards flowering the subsequent year. Collectively, our results suggest that chronically high levels of herbivory may be associated with spatial patterning of flowering within populations of a non-clonal plant. They also highlight the persistence of underlying spatial patterns, as evidenced by high levels of spatial clustering among non-flowering individuals, and the pervasive, although muted in a population subjected to chronic herbivory, influence of precipitation and temperature on flowering in long-lived forest herbs.
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Affiliation(s)
- Christopher R Webster
- School of Forest Resources and Environmental Science, Michigan Technological University , Houghton, MI , USA
| | - Michael A Jenkins
- Department of Forestry and Natural Resources, Purdue University , West Lafayette, IN , USA
| | - Aaron J Poznanovic
- Department of Forest Resources, University of Minnesota , St. Paul, MN , USA
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15
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Allen RB, Hurst JM, Portier J, Richardson SJ. Elevation-dependent responses of tree mast seeding to climate change over 45 years. Ecol Evol 2014; 4:3525-37. [PMID: 25478145 PMCID: PMC4224528 DOI: 10.1002/ece3.1210] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Revised: 08/01/2014] [Accepted: 08/05/2014] [Indexed: 12/04/2022] Open
Abstract
We use seed count data from a New Zealand mono-specific mountain beech forest to test for decadal trends in seed production along an elevation gradient in relation to changes in climate. Seedfall was collected (1965 to 2009) from seed trays located on transect lines at fixed elevations along an elevation gradient (1020 to 1370 m). We counted the number of seeds in the catch of each tray, for each year, and determined the number of viable seeds. Climate variables were obtained from a nearby (<2 km) climate station (914-m elevation). Variables were the sum or mean of daily measurements, using periods within each year known to correlate with subsequent interannual variation in seed production. To determine trends in mean seed production, at each elevation, and climate variables, we used generalized least squares (GLS) regression. We demonstrate a trend of increasing total and viable seed production, particularly at higher elevations, which emerged from marked interannual variation. Significant changes in four seasonal climate variables had GLS regression coefficients consistent with predictions of increased seed production. These variables subsumed the effect of year in GLS regressions with a greater influence on seed production with increasing elevation. Regression models enforce a view that the sequence of climate variables was additive in their influence on seed production throughout a reproductive cycle spanning more than 2 years and including three summers. Models with the most support always included summer precipitation as the earliest variable in the sequence followed by summer maximum daily temperatures. We interpret this as reflecting precipitation driven increases in soil nutrient availability enhancing seed production at higher elevations rather than the direct effects of climate, stand development or rising atmospheric CO2 partial pressures. Greater sensitivity of tree seeding at higher elevations to changes in climate reveals how ecosystem responses to climate change will be spatially variable.
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Affiliation(s)
| | | | - Jeanne Portier
- Centre d'Etude de la Forêt, Université du Québec à Montréal C.P. 8888, Montréal, Québec, H3C 3P8, Canada
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16
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Tamburino L, Bravo G. Mice in Wonderforest: Understanding mast seeding through individual-based modelling. Ecol Modell 2013. [DOI: 10.1016/j.ecolmodel.2012.10.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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17
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Montesinos D, García-Fayos P, Verdú M. Masting uncoupling: mast seeding does not follow all mast flowering episodes in a dioecious juniper tree. OIKOS 2012. [DOI: 10.1111/j.1600-0706.2011.20399.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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18
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Geburek T, Hiess K, Litschauer R, Milasowszky N. Temporal pollen pattern in temperate trees: expedience or fate? OIKOS 2012. [DOI: 10.1111/j.1600-0706.2011.20140.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Han Q, Kabeya D, Hoch G. Leaf traits, shoot growth and seed production in mature Fagus sylvatica trees after 8 years of CO2 enrichment. ANNALS OF BOTANY 2011; 107:1405-11. [PMID: 21493641 PMCID: PMC3101148 DOI: 10.1093/aob/mcr082] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2011] [Revised: 02/07/2011] [Accepted: 02/14/2011] [Indexed: 05/30/2023]
Abstract
BACKGROUND AND AIMS Masting, i.e. synchronous but highly variable interannual seed production, is a strong sink for carbon and nutrients. It may, therefore, compete with vegetative growth. It is currently unknown whether increased atmospheric CO(2) concentrations will affect the carbon balance (or that of other nutrients) between reproduction and vegetative growth of forest species. In this study, reproduction and vegetative growth of shoots of mature beech (Fagus sylvatica) trees grown at ambient and elevated atmospheric CO(2) concentrations were quantified. It was hypothesized that within a shoot, fruiting has a negative effect on vegetative growth, and that this effect is ameliorated at increased CO(2) concentrations. METHODS Reproduction and its competition with leaf and shoot production were examined during two masting events (in 2007 and 2009) in F. sylvatica trees that had been exposed to either ambient or elevated CO(2) concentrations (530 µmol mol(-1)) for eight consecutive years, between 2000 and 2008. KEY RESULTS The number of leaves per shoot and the length of terminal shoots was smaller or shorter in the two masting years compared with the one non-masting year (2008) investigated, but they were unaffected by elevated CO(2) concentrations. The dry mass of terminal shoots was approx. 2-fold lower in the masting year (2007) than in the non-masting year in trees growing at ambient CO(2) concentrations, but this decline was not observed in trees exposed to elevated CO(2) concentrations. In both the CO(2) treatments, fruiting significantly decreased nitrogen concentration by 25 % in leaves and xylem tissue of 1- to 3-year-old branches in 2009. CONCLUSIONS Our findings indicate that there is competition for resources between reproduction and shoot growth. Elevated CO(2) concentrations reduced this competition, indicating effects on the balance of resource allocation between reproduction and vegetative growth in shoots with rising atmospheric CO(2) concentrations.
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Affiliation(s)
- Qingmin Han
- Department of Plant Ecology, Forestry and Forest Products Research Institute (FFPRI), 1 Matsunosato, Tsukuba, Ibaraki, Japan.
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21
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Mund M, Kutsch WL, Wirth C, Kahl T, Knohl A, Skomarkova MV, Schulze ED. The influence of climate and fructification on the inter-annual variability of stem growth and net primary productivity in an old-growth, mixed beech forest. TREE PHYSIOLOGY 2010; 30:689-704. [PMID: 20453002 DOI: 10.1093/treephys/tpq027] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The periodic production of large seed crops by trees (masting) and its interaction with stem growth has long been the objective of tree physiology research. However, very little is known about the effects of masting on stem growth and total net primary productivity (NPP) at the stand scale. This study was conducted in an old-growth, mixed deciduous forest dominated by Fagus sylvatica (L.) and covers the period from 2003 to 2007, which comprised wet, dry and regular years as well as two masts of Fagus and one mast of the co-dominant tree species Fraxinus excelsior (L.) and Acer pseudoplatanus (L.). We combined analyses of weather conditions and stem growth at the tree level (inter- and intra-annual) with fruit, stem and leaf production, and estimates of total NPP at the stand level. Finally, we compared the annual demand of carbon for biomass production with net canopy assimilation (NCA), derived from eddy covariance flux measurements, chamber measurements and modelling. Annual stem growth of Fagus was most favoured by warm periods in spring and that of Fraxinus by high precipitation in June. For stem growth of Acer and for fruit production, no significant relationships with mean weather conditions were found. Intra-annual stem growth of all species was strongly reduced when the relative plant-available water in soil dropped below a threshold of about 60% between May and July. The inter-annual variations of NCA, total NPP and leaf NPP at the stand level were low (mean values 1313, 662 and 168 g C m(-2) year(-1), respectively), while wood and fruit production varied more and contrarily (wood: 169-241 g C m(-2) year(-1); fruits: 21-142 g C m(-2) year(-1)). In all years, an annual surplus of newly assimilated carbon was calculated (on average 100 g C m(-2) year(-1)). The results suggest that stem growth is generally not limited by insufficient carbon resources; only in mast years a short-term carbon shortage may occur in spring. In contrast to common assumption, stem growth alone is not a sufficient proxy for total biomass production or the control of carbon sequestration by weather extremes.
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Affiliation(s)
- M Mund
- Max Planck Institute for Biogeochemistry, Hans-Knöll-Str. 10, D-07745 Jena, Germany.
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Souza AF, Uarte de Matos D, Forgiarini C, Martinez J. Seed crop size variation in the dominant South American conifer Araucaria angustifolia. ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY 2010. [DOI: 10.1016/j.actao.2009.11.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Lebl K, Kürbisch K, Bieber C, Ruf T. Energy or information? The role of seed availability for reproductive decisions in edible dormice. J Comp Physiol B 2009; 180:447-56. [PMID: 19943051 PMCID: PMC2820667 DOI: 10.1007/s00360-009-0425-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2009] [Revised: 11/10/2009] [Accepted: 11/14/2009] [Indexed: 11/28/2022]
Abstract
The edible dormouse is a specialized seed predator which is highly adapted to the fluctuations of food availability caused by mast seeding of beech and oak trees. Dormice produce young just in time with maximum food availability, and can completely skip reproduction in years with a lack of seeding. Because their decision to reproduce or not in any particular year is made long before the ripe seeds are available, it seems that dormice can anticipate the upcoming mast situation. We tested the hypothesis that the presence of high caloric food in spring affects their reproductive decision. Therefore, we supplementary fed dormice in a field experiment from spring to early summer with sunflower seeds, which also contain a high amount of energy. Supplemental feeding caused significant increases in the proportion of reproducing females and reproductively active males. These results suggest that edible dormice may use the occurrence of an energy rich food resource to predict the autumnal mast situation. Further, our data indicate that the decision to reproduce was not the result of an increased body mass due to the consumption of surplus food, but that sufficient seed abundance acts as an environmental signal to which dormice adjust their reproduction.
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Affiliation(s)
- Karin Lebl
- Research Institute of Wildlife Ecology, University of Veterinary Medicine Vienna, Savoyenstrasse 1, 1160, Vienna, Austria.
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Masaki T, Oka T, Osumi K, Suzuki W. Geographical variation in climatic cues for mast seeding of Fagus crenata. POPUL ECOL 2008. [DOI: 10.1007/s10144-008-0104-6] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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