10.5061/DRYAD.2280GB5PD
Kennedy, John Paul
0000-0002-1015-1246
Manchester Metropolitan University
Dangremond, Emily M.
Roosevelt University
Hayes, Matthew A.
Griffith University
Preziosi, Richard F.
Manchester Metropolitan University
Rowntree, Jennifer K.
Manchester Metropolitan University
Feller, Ilka C.
Smithsonian Environmental Research Center
Data from: Hurricanes overcome migration lag and shape intraspecific
genetic variation beyond a poleward mangrove range limit
Dryad
dataset
2020
assignment analysis
dispersal kernels
long-distance dispersal (LDD)
northernmost mangroves
Tropical Cyclones
NASA Astrobiology Institute
https://ror.org/01qxmdg18
NX11AO94G
2020-06-22T00:00:00Z
2020-06-22T00:00:00Z
en
https://doi.org/10.1111/mec.15365
https://doi.org/10.1111/mec.15513
154152 bytes
2
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Expansion of many tree species lags behind climate-change projections.
Extreme storms can rapidly overcome this lag, especially for coastal
species, but how will storm-driven expansion shape intraspecific genetic
variation? Do storms provide recruits only from the nearest sources, or
from more distant sources? Answers to these questions have ecological and
evolutionary implications, but empirical evidence is absent from the
literature. Hurricane Irma provided an opportunity to address this
knowledge gap at the northern range limit of the neotropical black
mangrove (Avicennia germinans) on the Atlantic coast of Florida, USA. We
observed massive post-hurricane increases in beach-stranded A. germinans
propagules at, and past, this species’ present-day range margin when
compared to a previously-surveyed, non-hurricane year. Yet, propagule
dispersal does not guarantee subsequent establishment and reproductive
success (i.e., effective dispersal). We also evaluated prior effective
dispersal along this coastline with isolated A. germinans trees identified
beyond the most northern established population. We used 12 nuclear
microsatellite loci to genotype hurricane-driven drift propagules from
nine sites (n = 896 propagules) and isolated trees from four sites (n = 10
trees), determined their sources of origin, and estimated dispersal
distances. Almost all drift propagules and all isolated trees came from
the nearest sources. This research suggests that hurricanes are a
prerequisite for poleward range expansion of a coastal tree species and
that storms can shape the expanding gene pool by providing almost
exclusively range-margin genotypes. These insights and empirical estimates
of hurricane-driven dispersal distances should improve our ability to
forecast distributional shifts of coastal species.
Genotype data (drift propagules) – 896 Avicennia germinans (black
mangrove) drift propagules collected at nine beach survey sites along the
Atlantic coast of Florida, USA on 14-16 October, 2017 (five weeks after
Hurricane Irma made landfall in Florida). Genotype data (vagrant trees) -
10 isolated A. germinans trees from four locations beyond the most
northern established population of this species along the Atlantic coast
of Florida. Samples were collected between July 2016 and June 2017.
Genotype data (reference source populations) - Reference data set of 12 A.
germinans source populations that encompass the entire Florida
distribution of this species. This data set used inter-population FST =
0.1 to reduce the 32 Florida collection sites in the Kennedy et al (2020)
data set: https://doi.org/10.5061/dryad.69p8cz8xh
Genotype data (drift propagules) – column 1: site (identification code for
collection site); column 2: ID (identification code for sampled
propagule); column 3: lat (latitude at central point for each survey
site); column 4-27: multi-locus microsatellite genotype (12-loci). *NOTE:
blank cells are missing data Genotype data (vagrant trees) – column 1:
site (identification code for collection site); column 2: ID
(identification code for sampled tree); column 3: lat (latitude for
sampled tree); column 4-27: multi-locus microsatellite genotype (12-loci)
Genotype data (reference source populations) – column 1: site
(identification code for collection site); column 2: ID (identification
code for sampled tree); column 3-26: multi-locus microsatellite genotype
(12-loci). *NOTE: blank cells are missing data