Diversidade florística, dendrologia e dendroecologia em florestas estacionais decíduas do Centro e Norte do Peru

Abstract

DEDICATÓRIA .............................................................................63 3.4.2. Padrões de endemismo .....................................................................................................................64 3.4.3. Abundância de espécies ....................................................................................................................65 3.4.4 ................................................................................................. .................................................................................................... ................................................................................................... 501 6.2.2. Coleta de material botânico e das amostras do lenho.................................................................... 503 6.2.3. Preparo das amostras do lenho e caracterização dos anéis de crescimento ................................. 503 6.3 ................................................................................................. 527 7.2 In this study we analyzed the diversity and endemism of the woody flora of Seazonally dry tropical forests (SDTF) in northern and central Peru. We characterized the diversity of woody plants along the valleys to define the conservation values of the area at the national and international levels. The results indicate that the SDTF s of the Marañón Valley show surprisingly high values in endemics in relation to other SDTF s in Peru and neighboring SDTFs, and the pattern of endemism and population structure of the species varies in geographic and altitudinal grades. In contrast, the SDTFs of the Tambo River Valley, central Peru, are moderately rich in species that average the neotropical SDTFs and have scarce endemism. This region needs more efforts to get to know the elements of biodiversity more deeply. In this study, we also performed the dendroanatomic characterization of 87 species and is the first report of the anatomy of the wood for the two valleys. From the analysis of the wood of the 183 species recorded in the forests of northern and central Peru, only 157 have growth rings and need to be analyzed in detail with other studies of exchange rate development and traditional techniques of dendrochronological analysis. The derivation of this information can reach high impact in studies of climatic variability and conservation applications. Likewise, the preliminary dendrochronological analysis of growth rates reveals that Cedrela kuelapensis showed the highest growth rates and stands out as an excellent resource for reforestation programs in the inter-Andean valleys, in addition, Cordia iguaguana and Esenbeckia cornuta endemic populations are mainly from young individuals. We hope that the information in the five chapters constitutes in efficient and important tool to improve the management of forest resources in the valleys studied.

A unique Late Cretaceous fossil wood assemblage from Chilean Patagonia provides clues to a high‐latitude continental environment

“…1980; Bouchaud et al . 2011; Détienne 2012; Peña 2017; Rodríguez‐Reyes & Estrada‐Ruiz 2020; InsideWood 2022). Unfortunately there are no available descriptions or images of the wood anatomy of the genera Azanza and Malvaviscus .…”