Quantifying phenological diversity: a framework based on Hill numbers
Por:
Sanchez-Ochoa, Daniel, Gonzalez, Edgar J., del Coro Arizmendi, Maria, Koleff, Patricia, Martell-Dubois, Raul, Meave, Jorge A., Adan Perez-Mendoza, Hibraim
Publicada:
12 may 2022
Resumen:
Background. Despite the great concern triggered by the environmental
crisis worldwide, the loss of temporal key functions and processes
involved in biodiversity maintenance has received little attention.
Species are restricted in their life cycles by environmental variables
because of their physiological and behavioral properties; thus, the
timing and duration of species' presence and their activities vary
greatly between species within a community. Despite the ecological
relevance of such variation, there is currently no measure that
summarizes the key temporal aspects of biological diversity and allows
comparisons of community phenological patterns. Here, we propose a
measure that synthesizes variability of phenological patterns using the
Hill numbers based attribute diversity framework. Methods. We
constructed a new phenological diversity measure based on the
aforementioned framework through pairwise overlapping distances, which
was supplemented with wavelet analysis. The Hill numbers approach was
chosen as an adequate way to define a set of diversity values of
different order q, a parameter that determines the sensitivity of the
diversity measure to abundance. Wavelet transform analysis was used to
model continuous variables from incomplete data sets for different
phenophases. The new measure, which we call Phenological Hill numbers
(PD), considers the decouplings of phenophases through an overlapping
area value between pairs of species within the community. PD was first
tested through simulations with varying overlap in phenophase magnitude
and intensity and varying number of species, and then by using one real
data set. Results. PD maintains the diversity patterns of order q as in
any other diversity measure encompassed by the Hill numbers framework.
Minimum PD values in the simulated data sets reflect a lack of
differentiation in the phenological curves of the community over time;
by contrast, the maximum PD values reflected the most diverse
simulations in which phenological curves were equally distributed over
time. PD values were consistent with the homogeneous distribution of the
intensity and concurrence of phenophases over time, both in the
simulated and the real data set. Discussion. PD provides an efficient,
readily interpretable and comparable measure that summarizes the variety
of phenological patterns observed in ecological communities. PD retains
the diversity patterns of order q characteristic of all diversity
measures encompassed by the distance-based Hill numbers framework. In
addition, wavelet transform analysis proved useful for constructing a
continuous phenological curve. This methodological approach to quantify
phenological diversity produces simple and intuitive values for the
examination of phenological diversity and can be widely applied to any
taxon or community's phenological traits.
Filiaciones:
Sanchez-Ochoa, Daniel:
Univ Nacl Autonoma Mexico, Fac Estudios Super Iztacala, Lab Ecol Evolut & Conservac Anfibios & Reptiles, Mexico City, DF, Mexico
Univ Nacl Autonoma Mexico, Posgrad Ciencias Biol, Unidad Posgrad, Circuito Posgrados, Ciudad Univ, Ciudad De Mexico, Mexico
Gonzalez, Edgar J.:
Univ Nacl Autonoma Mexico, Fac Ciencias, Dept Ecol & Recursos Nat, Ciudad Univ, Ciudad De Mexico, Mexico
del Coro Arizmendi, Maria:
Univ Nacl Autonoma Mexico, Fac Estudios Super Iztacala, Lab Ecol, UBIPRO, Mexico City, DF, Mexico
Koleff, Patricia:
Comis Nacl Conocimiento & Uso Biodiversidad, Ciudad De Mexico, Mexico
Martell-Dubois, Raul:
Comis Nacl Conocimiento & Uso Biodiversidad, Ciudad De Mexico, Mexico
Meave, Jorge A.:
Univ Nacl Autonoma Mexico, Fac Ciencias, Dept Ecol & Recursos Nat, Ciudad Univ, Ciudad De Mexico, Mexico
Adan Perez-Mendoza, Hibraim:
Univ Nacl Autonoma Mexico, Fac Estudios Super Iztacala, Lab Ecol Evolut & Conservac Anfibios & Reptiles, Mexico City, DF, Mexico
Green Published, gold, Gold, Green
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