Consequences of intraspecific variation in seed dispersal for plant demography, communities, evolution and global change

Author:

Snell Rebecca S1,Beckman Noelle G2,Fricke Evan3,Loiselle Bette A45,Carvalho Carolina S6,Jones Landon R7,Lichti Nathanael I8,Lustenhouwer Nicky9,Schreiber Sebastian J10,Strickland Christopher11,Sullivan Lauren L12,Cavazos Brittany R3,Giladi Itamar13,Hastings Alan1415,Holbrook Kimberly M16,Jongejans Eelke17,Kogan Oleg18,Montaño-Centellas Flavia4,Rudolph Javiera19,Rogers Haldre S3,Zwolak Rafal20,Schupp Eugene W21

Affiliation:

1. Department of Environmental and Plant Biology, Ohio University, Athens, OH, USA

2. Department of Biology and Ecology Center, Utah State University, Logan, UT, USA

3. Department of Ecology, Evolution, and Organismal Biology, Iowa State University, Ames, IA, USA

4. Department of Wildlife Ecology and Conservation, University of Florida, Gainesville, FL, USA

5. Center for Latin American Studies, University of Florida, Gainsville, FL, USA

6. Instituto Tecnológico Vale, Belém, Brazil

7. Department of Forestry and Natural Resources, Purdue University, West Lafayette, IN, USA

8. Department of Statistics, Purdue University, West Lafayette, IN, USA

9. Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, CA, USA

10. Department of Evolution and Ecology and Center for Population Biology, University of California, Davis, CA, USA

11. Department of Mathematics and Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, Knoxville, TN, USA

12. Division of Biological Sciences, University of Missouri, Columbia, MO, USA

13. Mitrani Department of Desert Ecology, Swiss Institute for Dryland Environmental and Energy Research, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben-Gurion, Israel

14. Department of Environmental Science and Policy, University of California, Davis, CA, USA

15. Santa Fe Institute, Santa Fe, NM, USA

16. Africa Program, The Nature Conservancy, Arlington, VA, USA

17. Institute for Water and Wetland Research, Radboud University, Nijmegen, Netherlands

18. Physics Department, California Polytechnic State University, San Luis Obispo, CA, USA

19. Department of Biology, University of Florida, Gainesville, FL, USA

20. Department of Systematic Zoology, Adam Mickiewicz University, Poznań, Poland

21. Department of Wildland Resources and Ecology Center, Utah State University, Logan, UT, USA

Abstract

AbstractAs the single opportunity for plants to move, seed dispersal has an important impact on plant fitness, species distributions and patterns of biodiversity. However, models that predict dynamics such as risk of extinction, range shifts and biodiversity loss tend to rely on the mean value of parameters and rarely incorporate realistic dispersal mechanisms. By focusing on the mean population value, variation among individuals or variability caused by complex spatial and temporal dynamics is ignored. This calls for increased efforts to understand individual variation in dispersal and integrate it more explicitly into population and community models involving dispersal. However, the sources, magnitude and outcomes of intraspecific variation in dispersal are poorly characterized, limiting our understanding of the role of dispersal in mediating the dynamics of communities and their response to global change. In this manuscript, we synthesize recent research that examines the sources of individual variation in dispersal and emphasize its implications for plant fitness, populations and communities. We argue that this intraspecific variation in seed dispersal does not simply add noise to systems, but, in fact, alters dispersal processes and patterns with consequences for demography, communities, evolution and response to anthropogenic changes. We conclude with recommendations for moving this field of research forward.

Funder

National Science Foundation

Publisher

Oxford University Press (OUP)

Subject

Plant Science

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