Differential ecological filtering across life cycle stages drive old-field succession in a neotropical dry forest
Por:
Martinez-Ramos, Miguel, Barragan, Felipe, Mora, Francisco, Maza-Villalobos, Susana, Arreola-Villa, Luis F., Bhaskar R., Bongers F., Lemus-Herrera C., Paz, Horacio, Martinez-Yrizar, Angelina, Santini, Bianca A., Balvanera, Patricia
Publicada:
15 feb 2021
Resumen:
Abiotic and biotic filters may play differential roles in the plant
community organization along forest succession in abandoned fields.
However, little is known about how life stage-specific filters influence
species replacement during succession. We approach this issue by
analyzing changes in community attributes (abundance, species density,
species diversity, species composition) and the phylogenetic structure
of shrubs and trees at different life stages during the old-field
succession of a seasonally tropical dry forest (TDF) in Western Mexico.
We raised two main questions: (1) How different are the trajectories of
change in community attributes and phylogenetic structure along
succession for shrub and tree species at different life-stages? (2) Do
different stage-specific trajectories result from differential filtering
mechanisms? We used a chronosequence of abandoned pastures and forest
sites, classified in five successional categories (with three sites
each): Pasture (<1.5 years fallow age), Early (3.5-5.5 y), Mid (6-8 y),
Advanced (13-15 y), and Old-Growth Forest. Identity and abundance of
species were recorded at five life stages: seeds in the top soil layer,
seedlings (plants emerged from seeds, 10-100 cm height), resprouts
(plants emerging from buds in roots or stumps, 10-100 cm height),
juvenile [shrubs and trees > 100 cm height and < 2.5 cm diameter at
breast height (DBH)], adults (shrubs and trees with DBH >= 2.5 cm).
Additionally, we quantified the phylogenetic mean parwise distance (MPD)
among species, and analyzed the phylogenetic community structure, for
each successional category and life stage. We found that early in
succession the resprout stage was more abundant and diverse than the
seedling stage, while the inverse occurred late in succession. Along the
first 15 years of succession, the seedling stage showed a clumped
phylogenetic structure (with a strong dominance of legume species),
while the resprout stage tended to have an overdispersed one (with
species from a wide range of clades). Also, community attributes of the
juvenile and adult stages approached those of the old-growth forest, and
in both stages the phylogenetic structure changed from clustered to
random. Overall, our results suggest that the assembly of shrub and
trees communities along succession resulted from a combination of
abiotic filtering processes, operating mostly on seedlings (selecting
primarily legume drought tolerant species), and biotic filtering
processes, operating mostly in resprouts (generating a taxonomic and
phylogenetically diverse regenerative pool). The implications of these
results for the management of secondary TDF in human modified landscapes
are discussed.
Filiaciones:
Martinez-Ramos, Miguel:
Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Antigua Carretera a Pátzcuaro 8701, Morelia, Michoacán 58190, Mexico
Univ Nacl Autonoma Mexico, Inst Invest Ecosistemas & Sustentabilidad, Antigua Carretera Patzcuaro 8701, Morelia 58190, Michoacan, Mexico
Barragan, Felipe:
Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Antigua Carretera a Pátzcuaro 8701, Morelia, Michoacán 58190, Mexico
CONACYT – Instituto Potosino de Investigación Científica y Tecnológica, División de Ciencias Ambientales, Camino a la presa San José 2055, Lomas 4ta Sección, San Luis Potosí, S.L.P., 78216, Mexico
Univ Nacl Autonoma Mexico, Inst Invest Ecosistemas & Sustentabilidad, Antigua Carretera Patzcuaro 8701, Morelia 58190, Michoacan, Mexico
Mora, Francisco:
Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Antigua Carretera a Pátzcuaro 8701, Morelia, Michoacán 58190, Mexico
Maza-Villalobos, Susana:
Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Antigua Carretera a Pátzcuaro 8701, Morelia, Michoacán 58190, Mexico
CONACYT-El Colegio de la Frontera Sur, Unidad Tapachula, México, Carretera Antiguo Aeropuerto Km 2.5, Centro, Tapachula, Chiapas 30700, Mexico
Escuela Nacional de Estudios Superiores Morelia, Universidad Nacional Autónoma de México, Antigua Carretera a Pátzcuaro 8701, Morelia, Michoacán 58190, Mexico
Arreola-Villa, Luis F.:
Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Antigua Carretera a Pátzcuaro 8701, Morelia, Michoacán 58190, Mexico
Bhaskar R.:
College of Design, Engineering, and Commerce, Thomas Jefferson University, Philadelphia, PA, United States
Bongers F.:
Forest Ecology and Forest Management Group, Wageningen University, P.O. Box 47, Wageningen, 6700 AA, Netherlands
Lemus-Herrera C.:
Universidad Intercultural Indígena de Michoacán, Carretera Huecorio Km 3, Pátzcuro, Michoacán 61614, Mexico
Paz, Horacio:
Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Antigua Carretera a Pátzcuaro 8701, Morelia, Michoacán 58190, Mexico
Martinez-Yrizar, Angelina:
Instituto de Ecología, Universidad Nacional Autónoma de México, Av. Colosio y Sahuaripa s/n, Hermosillo, Sonora 83250, Mexico
Santini, Bianca A.:
Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Antigua Carretera a Pátzcuaro 8701, Morelia, Michoacán 58190, Mexico
Balvanera, Patricia:
Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Antigua Carretera a Pátzcuaro 8701, Morelia, Michoacán 58190, Mexico
CONACYT, Inst Potosino Invest Cient & Tecnol, Div Ciencias Ambientales, Camino Presa San Jose 2055,Lomas 4Ta Secc, San Luis Potosi 78216, San Luis Potosi, Mexico
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