Recent climate change has deeply affected the unique and vulnerable polar and high mountain
ecosystems. However, due to limited knowledge, high uncertainty remains
regarding similar effects on tropical biotas. In the present project, we
propose to study and promote tropical bryophytes and ferns as bioindicators of
climate change. These highly diverse plants, widely acknowledged as crucial
ecosystem components, remain among the least known groups.
This project
sets up the first comparative analysis of tropical biodiversity along
altitudinal gradients in multiple islands. It assembles an international and
multidisciplinary network across the islands of La Réunion (Mascarenes),
Guadeloupe (Antilles), Pico (Azores), La Palma (Canaries) and Tahiti (French
Polynesia). Partners with expertise in the field of biodiversity research and conservation
include universities, research centres and national parks.
The intended
project specifically aims to: (1) Characterise bryophyte and fern diversity
along altitudinal gradients from lowland to summit and from the gene to
community level, (2) Relate species diversity and distribution patterns to
relevant life-history and functional traits, (3) Compare relationships between
diversity and predictors across the islands, (4) Model species response to
climate change in terms of range shifts, (5) Establish permanent plots for
long-term vegetation monitoring. Scientific networking will include intensive
sampling and environment monitoring across the islands. Novel modelling
approaches will help infer the relationships between species performance and
local conditions. The derived results will bring new evidence regarding species
and community responses to climate change.
Overall, the
results will be highly relevant for conservation managers and decision-makers.
The original participation of local stakeholders (National Parks of Guadeloupe
and Réunion) to a common research project will insure results transfer to
conservation managers. The deliverables include joint publications, as well as
training the next generation of field taxonomists and developing tools for
conservation managers to promote sustainable biodiversity management.
