Data from: Dispersal limits poleward expansion of mangroves on the west coast of North America ...
While much attention has been paid to the climatic controls of species’ range limits, other factors such as dispersal limitation are also important. Temperature is an important control of the distribution of coastal mangrove forests, and mangrove expansion at multiple poleward range limits has been...
| Main Authors: | , , , |
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| Format: | Dataset |
| Language: | English |
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Dryad
2024
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.hmgqnk9sg https://datadryad.org/stash/dataset/doi:10.5061/dryad.hmgqnk9sg |
| Summary: | While much attention has been paid to the climatic controls of species’ range limits, other factors such as dispersal limitation are also important. Temperature is an important control of the distribution of coastal mangrove forests, and mangrove expansion at multiple poleward range limits has been linked to increasing temperatures. However, mangrove abundances at other poleward range limits have been surprisingly insensitive to climate change, indicating other drivers of range limitation. For example, along the west coast of North America, the poleward mangrove range limits are found on the Baja California and mainland coasts of Mexico, between 26.8 - 30.3°N. Non-climatic factors may play an important role in setting these range limits as 1) the abundance of range limit populations has been relatively insensitive to climate variability and 2) an introduced population of mangroves has persisted hundreds of kilometers north of the natural range limits. We combined a species distribution model with a ... : Particle transport simulation Propagule trajectories were computed using surface-ocean current data from a mesoscale and tide-resolving configuration of the Massachusetts Institute of Technology general circulation model (MITgcm). The simulation was carried out in a latitude-longitude-polar cap (LLC) configuration with a polar cap that has 4320 grid cells on each side (hereafter referred to as LLC4320). There are 243 million horizontal grid cells and 90 vertical (depth) levels for a total grid count of 2.2 ^ 1010. The model has a nominal horizontal grid resolution of 1/48°, which ranges from 0.75 km near Antarctica to 2.2 km at the Equator, and a vertical grid spacing of 1 m near the surface to better resolve surface currents and diurnal cycles. A Lagrangian approach was used to compute particle propagation by linearly interpolating the zonal and meridional LLC4320 surface-ocean velocities and using a first-order Euler time-stepping method. Vertical motion was neglected, which is a reasonable assumption for ... |
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