Topic
Cupressaceae
About: Cupressaceae is a research topic. Over the lifetime, 187 publications have been published within this topic receiving 3385 citations.
Papers published on a yearly basis
Papers
1 Jan 2023
TL;DR: Refinar los modelos de distribución de especies de plantas amenazadas de México con información de sensores remotos y medidas espaciales de incertidumbre.
Abstract: El proyecto tiene como objetivo desarrollar y refinar los modelos de distribución (SDM) de 227 especies de plantas incluidas en la Norma Oficial Mexicana NOM-059-SEMARNAT-2010, pertenecientes a las familias Orchidaceae (188 especies), Pinaceae (30 especies), Cupressaceae (7 especies), Taxaceae (1 especie), and Podocarpaceae (1 especie), con la perspectiva de apoyar su manejo y conservación. El refinamiento de los SDM de estas especies amenazadas comprende dos grandes aspectos, (1) la inclusión de datos de percepción remota, además de los datos climáticos que se utilizan comúnmente, y (2) la evaluación espacial de la incertidumbre de los modelos. Para cada especie se generarán diferentes productos de las áreas de distribución (continuos, categóricos) a 1 km² de resolución utilizando diferentes algoritmos (e.g. Maxent, GLM, RandomForest). Las variables predictoras derivadas de datos de percepción remota que se utilizarán son series de tiempo del sensor Terra-MODIS (Indice de vegetación mejorado, EVI por sus siglas en inglés -Enhanced Vegetation Index-, temperatura de la superficie terrestre, LST -Land Surface Temperature- y la reflectancia de la superficie, las cuales han probado ser útiles para la clasificación de la vegetación. El proyecto también contempla evaluar la importancia del clima y de las variables de percepción remota en la distribución de las especies, así como la extracción de perfiles fenológicos para cada especie. Se producirán mapas de distribución generados con variables obtenidas mediante percepción remota ya que, sin bien como resultado de la modelación climática un sitio resulta ser adecuado para una especie, puede darse el caso de que la especie no esté presente. Estos mapas, en conjunto, permitirán identificar posibles 'hotspots' de deterioro de hábitat debido a causas antropogénicas a nivel país. El uso de datos de percepción remota actuales para la modelación de la distribución de especies allana el camino para la construcción de un sistema nacional de monitoreo de la biodiversidad. El proyecto está planteado como una colaboración entre el Helmholtz Centre for Environmental Research - UFZ y el Instituto de Biología de la Universidad Nacional Autónoma de México (UNAM). Percepción remota, incertidumbre de los modelos , Máxima Entropía, GLM, RandomForest, modelo jerárquico, NOM-059-SEMARNAT-2010, plantas amenazadas , monitoreo de la biodiversidad Reino: 1 Filo: 1 Clase: 1 Orden: 4 Familia: 4 Género: 73 Subgénero: 2 Especie: 163 Epitetoinfraespecifico: 11
263 citations
TL;DR: The data show that drought-resistant crown clades (the Cupressoid and Callitroid clades) most likely evolved from drought-intolerant Mesozoic ancestors, and that this pattern is consistent with proposed shifts in post-Eocene paleoclimates.
Abstract: The Cupressaceae clade has the broadest diversity in habitat and morphology of any conifer family. This clade is characterized by highly divergent physiological strategies, with deciduous swamp-adapted genera-like Taxodium at one extreme, and evergreen desert genera-like Cupressus at the other. The size disparity within the Cupressaceae is equally impressive, with members ranging from 5-m-tall juniper shrubs to 100-m-tall redwood trees. Phylogenetic studies demonstrate that despite this variation, these taxa all share a single common ancestor; by extension, they also share a common ancestral habitat. Here, we use a common-garden approach to compare xylem and leaf-level physiology in this family. We then apply comparative phylogenetic methods to infer how Cenozoic climatic change shaped the morphological and physiological differences between modern-day members of the Cupressaceae. Our data show that drought-resistant crown clades (the Cupressoid and Callitroid clades) most likely evolved from drought-intolerant Mesozoic ancestors, and that this pattern is consistent with proposed shifts in post-Eocene paleoclimates. We also provide evidence that within the Cupressaceae, the evolution of drought-resistant xylem is coupled to increased carbon investment in xylem tissue, reduced xylem transport efficiency, and at the leaf level, reduced photosynthetic capacity. Phylogenetically based analyses suggest that the ancestors of the Cupressaceae were dependent upon moist habitats, and that drought-resistant physiology developed along with increasing habitat aridity from the Oligocene onward. We conclude that the modern biogeography of the Cupressaceae conifers was shaped in large part by their capacity to adapt to drought.
153 citations
TL;DR: Phylogenetic analyses produced four most parsimonious trees that differ only in the positions of three genera and the degree of resolution of a trichotomy within Cupressaceae s.l. str.
Abstract: DNA sequences from the plastid gene rbcL were used to assess relationships among genera of the conifer families Taxodiaceae and Cupressaceae s. str. Phylogenetic analyses produced four most parsimonious trees that differ only in the positions of three genera (Athrotaxis, Taxodium, and Taiwania) and the degree of resolution of a trichotomy within Cupressaceae s. str. Taxodiaceae and Cupressaceae form a monophyletic group. The major lineages of Taxodiaceae diverged first, and a monophyletic Cupressaceae s. str. are derived from within Taxodiaceae. These results are consistent with recent suggestions that the two families be treated as a single family, Cupressaceae s.l. Sciadopitys, often classified in Taxodiaceae, is not closely related to Cupressaceae s.l. and should be excluded from the family. Sequence evolution of rbcL is extremely slow in this group of long- lived trees. The rate of silent nucleotide substitutions is 2.5 x 10" per site per year, approximately 13 times slower than rates estimated in short-lived monocots.
146 citations
TL;DR: An analysis of en-alkane indicates a strong phylogenetic signal in which the smallest biosynthetic fractionation occurs in Pinaceae and the largest in Taxaceae, which may be related to differences in carbon metabolism among conifer clades.
115 citations
TL;DR: In Mexico conifers grow from sea level to above 4,000 m, with the greatest diversity concentrated in montane forests of the Sierra Madre Occidental and Sierras Madre Oriental as mentioned in this paper.
Abstract: Conifers (Pinophyta) are woody trees or shrubs with simple leaves and reproductive structures arranged in simple pollen cones and (except in Taxaceae) compound seed cones. They are dominant components of several vegetation types. In Mexico conifers grow from sea level to above 4 000 m, with the greatest diversity concentrated in montane forests of the Sierra Madre Occidental and Sierra Madre Oriental. Four families have natural distributions in the country: Pinaceae (4 genera and 61 species), Cupressaceae (4 genera and 29 species), Podocarpaceae (1 genus and 3 species), and Taxaceae (1 species). Of the 94 Mexican conifer species, 43 are endemic to the country, 18 with ranges restricted to 3 or fewer states.
107 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2025 | 19 |
| 2024 | 55 |
| 2023 | 42 |
| 2022 | 88 |
| 2021 | 8 |
| 2020 | 17 |