Dynamics of the species ranges in a changing climate
Fecha
2022
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Universidad Rey Juan Carlos
Resumen
Evidence is mounting that ongoing climate change is leading to a globally
consistent fingerprint of systematic shifts in species distributions, and they are
estimated to be 2.5 times greater than previously anticipated. In particular, a
series of commonly articulated hypotheses have emerged that species are
expected to shift their distributions to higher latitudes or elevations, and deeper
depths in response to climate change, reflecting an underlying assumption that
species will move to cooler locations to track spatial changes in the
temperature. However, many species are not demonstrating range shifts
consistent with these hypotheses, because species do not necessarily move
along the linear temperature gradients. Their distributions are influenced by
many interconnected factors, such as precipitation, land-use change, physical
barriers, species trait, population dynamics, invasive species, interspecific
species interactions and microclimate conditions.
Understanding how species distribution changes in response to climate change
is enormously complex. Providing effective explanations for the observed
variability in species’ range shifts requires, firstly, that method used for
detection of distributional changes are able to distinguish between directional
and non-directional changes and secondly, that they are able to distinguish
distributional changes driven by natural population dynamics from changes
driven by external forcing (climatic or non-climatic).
Descripción
Tesis Doctoral leída en la Universidad Rey Juan Carlos de Madrid en 2022. Director:
Prof. Miguel Bastos Araújo
Tutor:
Dr. Rubén Milla Gutiérrez
Programa de Doctorado en Ecología, Conservación y Restauración de
Ecosistemas
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