Advanced search
1 file | 1.75 MB Add to list

Forest fragmentation shapes the alpha‐gamma relationship in plant diversity

Author
Organization
Abstract
Questions: Forest fragmentation affects biodiversity locally (alpha diversity) and beyond - at relatively larger scales (gamma diversity) - by increasing dispersal and recruitment limitations. Yet, does an increase in fragmentation affect the relationship between alpha and gamma diversity and what can we learn from it? Location: Northern France. Methods: We surveyed 116 forest patches across three fragmentation levels: none (continuous forest); intermediate (forest patches connected by hedgerows); and high (isolated forest patches). Plant species richness of both forest specialists and generalists was surveyed at five nested spatial resolutions across each forest patch: 1 m(2); 10 m(2); 100 m(2); 1,000 m(2); and total forest patch area. First, we ran log-ratio models to quantify the alpha-gamma relationship. We did that separately for all possible combinations of fragmentation level (none vs intermediate vs high) x spatial scale (e.g., alpha-1 m(2) vs gamma-10 m(2)) x species type (e.g., alpha-specialists vs gamma-specialists). We then used linear mixed-effects models to analyze the effect of fragmentation level, spatial scale, species type and all two-way interaction terms on the slope coefficient extracted from all log-ratio models. Results: We found an interaction effect between fragmentation level and species type, such that forest specialists shifted from a linear (i.e., proportional sampling) to a curvilinear plateau (i.e., community saturation) relationship at low and high fragmentation, respectively, while generalists shifted from a curvilinear to a linear pattern. Conclusions: The impact of forest fragmentation on the alpha-gamma relationship supports generalist species persistence over forest specialists, with contrasting mechanisms for these two guilds. As fragmentation increases, forest specialists shift from proportional sampling towards community saturation, thus reducing alpha diversity likely due to dispersal limitation. Contrariwise, generalists shift from community saturation towards proportional sampling, thus increasing alpha diversity likely due to an increase in the edge:core ratio. To ensure long-term conservation of forest specialists, one single large forest patch should be preferred over several small ones.
Keywords
agricultural landscapes, alpha diversity, anthropogenic disturbances, community assembly, dispersal limitations, gamma diversity, habitat conservation strategies, habitat fragmentation, local-regional richness relationship, metacommunity dynamics, REGIONAL SPECIES RICHNESS, HABITAT FRAGMENTATION, RELATIVE IMPORTANCE, COMMUNITY PATTERNS, CONNECTIVITY, ASSEMBLAGES, SPECIALISTS, COMPETITION, SATURATION, SUCCESSION

Downloads

  • (...).pdf
    • full text (Published version)
    • |
    • UGent only
    • |
    • PDF
    • |
    • 1.75 MB

Citation

Please use this url to cite or link to this publication:

MLA
Almoussawi, Ali, et al. “Forest Fragmentation Shapes the Alpha‐gamma Relationship in Plant Diversity.” JOURNAL OF VEGETATION SCIENCE, vol. 31, no. 1, 2020, pp. 63–74, doi:10.1111/jvs.12817.
APA
Almoussawi, A., Lenoir, J., Jamoneau, A., Tarek, H., Wasof, S., Gallet‐Moron, E., … Decocq, G. (2020). Forest fragmentation shapes the alpha‐gamma relationship in plant diversity. JOURNAL OF VEGETATION SCIENCE, 31(1), 63–74. https://doi.org/10.1111/jvs.12817
Chicago author-date
Almoussawi, Ali, Jonathan Lenoir, Aurélien Jamoneau, Hattab Tarek, Safaa Wasof, Emilie Gallet‐Moron, Carol Ximena Garzon‐Lopez, Fabien Spicher, Ahmad Kobaissi, and Guillaume Decocq. 2020. “Forest Fragmentation Shapes the Alpha‐gamma Relationship in Plant Diversity.” JOURNAL OF VEGETATION SCIENCE 31 (1): 63–74. https://doi.org/10.1111/jvs.12817.
Chicago author-date (all authors)
Almoussawi, Ali, Jonathan Lenoir, Aurélien Jamoneau, Hattab Tarek, Safaa Wasof, Emilie Gallet‐Moron, Carol Ximena Garzon‐Lopez, Fabien Spicher, Ahmad Kobaissi, and Guillaume Decocq. 2020. “Forest Fragmentation Shapes the Alpha‐gamma Relationship in Plant Diversity.” JOURNAL OF VEGETATION SCIENCE 31 (1): 63–74. doi:10.1111/jvs.12817.
Vancouver
1.
Almoussawi A, Lenoir J, Jamoneau A, Tarek H, Wasof S, Gallet‐Moron E, et al. Forest fragmentation shapes the alpha‐gamma relationship in plant diversity. JOURNAL OF VEGETATION SCIENCE. 2020;31(1):63–74.
IEEE
[1]
A. Almoussawi et al., “Forest fragmentation shapes the alpha‐gamma relationship in plant diversity,” JOURNAL OF VEGETATION SCIENCE, vol. 31, no. 1, pp. 63–74, 2020.
@article{8631545,
  abstract     = {{Questions: Forest fragmentation affects biodiversity locally (alpha diversity) and beyond - at relatively larger scales (gamma diversity) - by increasing dispersal and recruitment limitations. Yet, does an increase in fragmentation affect the relationship between alpha and gamma diversity and what can we learn from it?
Location: Northern France.
Methods: We surveyed 116 forest patches across three fragmentation levels: none (continuous forest); intermediate (forest patches connected by hedgerows); and high (isolated forest patches). Plant species richness of both forest specialists and generalists was surveyed at five nested spatial resolutions across each forest patch: 1 m(2); 10 m(2); 100 m(2); 1,000 m(2); and total forest patch area. First, we ran log-ratio models to quantify the alpha-gamma relationship. We did that separately for all possible combinations of fragmentation level (none vs intermediate vs high) x spatial scale (e.g., alpha-1 m(2) vs gamma-10 m(2)) x species type (e.g., alpha-specialists vs gamma-specialists). We then used linear mixed-effects models to analyze the effect of fragmentation level, spatial scale, species type and all two-way interaction terms on the slope coefficient extracted from all log-ratio models.
Results: We found an interaction effect between fragmentation level and species type, such that forest specialists shifted from a linear (i.e., proportional sampling) to a curvilinear plateau (i.e., community saturation) relationship at low and high fragmentation, respectively, while generalists shifted from a curvilinear to a linear pattern.
Conclusions: The impact of forest fragmentation on the alpha-gamma relationship supports generalist species persistence over forest specialists, with contrasting mechanisms for these two guilds. As fragmentation increases, forest specialists shift from proportional sampling towards community saturation, thus reducing alpha diversity likely due to dispersal limitation. Contrariwise, generalists shift from community saturation towards proportional sampling, thus increasing alpha diversity likely due to an increase in the edge:core ratio. To ensure long-term conservation of forest specialists, one single large forest patch should be preferred over several small ones.}},
  author       = {{Almoussawi, Ali and Lenoir, Jonathan and Jamoneau, Aurélien and Tarek, Hattab and Wasof, Safaa and Gallet‐Moron, Emilie and Garzon‐Lopez, Carol Ximena and Spicher, Fabien and Kobaissi, Ahmad and Decocq, Guillaume}},
  issn         = {{1100-9233}},
  journal      = {{JOURNAL OF VEGETATION SCIENCE}},
  keywords     = {{agricultural landscapes,alpha diversity,anthropogenic disturbances,community assembly,dispersal limitations,gamma diversity,habitat conservation strategies,habitat fragmentation,local-regional richness relationship,metacommunity dynamics,REGIONAL SPECIES RICHNESS,HABITAT FRAGMENTATION,RELATIVE IMPORTANCE,COMMUNITY PATTERNS,CONNECTIVITY,ASSEMBLAGES,SPECIALISTS,COMPETITION,SATURATION,SUCCESSION}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{63--74}},
  title        = {{Forest fragmentation shapes the alpha‐gamma relationship in plant diversity}},
  url          = {{http://dx.doi.org/10.1111/jvs.12817}},
  volume       = {{31}},
  year         = {{2020}},
}

Altmetric
View in Altmetric
Web of Science
Times cited: