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Understanding the evolutionary dynamics of forest islands in the landscape can inform conservation strategies for peatland ecosystems in tropical mountains and specify how different elements interact in landscape formation. We studied a peatland ecosystem at the headwaters of the Preto River, on a plateau surface known as Chapadão do Couto, in the Rio Preto State Park (São Gonçalo do Rio Preto, MG) at an altitude of 1,600 m. We analyzed two forest islands with predominantly semideciduous seasonal forest, one entirely within the peatland and the other at the transition to mesic grassland. The purpose was to investigate variations in the amount and fractioning of litter in each forest fragment at different times of the year, to show responses of the forest to the different conditions of insertion in the peatland and how this affects the dynamics of functional balance of the ecosystem. Four sampling of litter were made within the forest islands (Jun./2018 to Feb./2019) by the aid of 1 m2 collectors made of shade cloth, at a height of 50 cm. We observed a dynamic of interactions with distinct patterns among the forest islands, and also verified variations in the litter with respect to intensity and quantity of deposition, dynamics of deciduousness, this more associated with soil moisture conditions than the temperature at the surface and other features of the soil organic matter

Augusto Weberbauer published, in 1922, the first vegetation map of Peru, where he showed and described twenty-five plant formations, grouped into six categories, considering altitudinal ranges defined according to their temperature. Within these categories are the microthermal formations that are generally found above 3400 masl and have a wide latitudinal distribution throughout the Peruvian Andes. To revalue that historical map, we present, firstly, the results of digitalization and estimation of extension of the four microthermal vegetation formations identified by Weberbauer, and secondly, the findings of cartographic contrasting between these microthermal formations, and the high Andean vegetation covers as classified in the most updated map on this subject. Weberbauer mapped an area of 183.445,30 km² for the four microthermal vegetation formations: typical high Andean formations (61,67%); microthermal herbaceous steppe (17,93%); microthermal tolar (17,47%); glaciers and perpetual snow (2,93%). Likewise, a cartographic comparison showed that 63,92% of the territory currently occupied by high Andean vegetation cover in Peru is coincident with that mapped by Weberbauer as microthermal vegetation formations. These results contribute to the understanding of the evolution of these formations, which are under climate change and anthropogenic pressures. [ABSTRACT FROM AUTHOR]

Understanding the evolutionary dynamics of forest islands in the landscape can inform conservation strategies for peatland ecosystems in tropical mountains and specify how different elements interact in landscape formation. We studied a peatland ecosystem at the headwaters of the Preto River, on a plateau surface known as Chapadão do Couto, in the Rio Preto State Park (São Gonçalo do Rio Preto, MG) at an altitude of 1,600 m. We analyzed two forest islands with predominantly semideciduous seasonal forest, one entirely within the peatland and the other at the transition to mesic grassland. The purpose was to investigate variations in the amount and fractioning of litter in each forest fragment at different times of the year, to show responses of the forest to the different conditions of insertion in the peatland and how this affects the dynamics of functional balance of the ecosystem. Four sampling of litter were made within the forest islands (Jun./2018 to Feb./2019) by the aid of 1 m² collectors made of shade cloth, at a height of 50 cm. We observed a dynamic of interactions with distinct patterns among the forest islands, and also verified variations in the litter with respect to intensity and quantity of deposition, dynamics of deciduousness, this more associated with soil moisture conditions than the temperature at the surface and other features of the soil organic matter. [ABSTRACT FROM AUTHOR]

This article addresses the existing relations between a traditional community and the biodiversity of the Atlantic Rainforest, with emphasis on the knowledge, use and handling of food plants. The community which was studied, Guarda do Embaú, municipal area of Palhoça (SC), is located in the surroundings of a Preservation Unit, the State Park of Serra do Tabuleiro. The ethnobotanical survey of the food species was conducted through semi-structured interviews with key contributors, as well as the description of the phytophysiognomy and mapping of the areas where the species were harvested. Nine interviews were carried out, ascertaining the use of 23 species, being Myrtaceae and Arecaceae the most notable botanical family. The part of the plant most cited for consumption was the fruit. [ABSTRACT FROM AUTHOR]

Copyright of Nativa is the property of Revista Nativa and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The present work aimed to treat and discuss the conceptualization of Biogeography, as one of the fields of study of Geography; of Phytogeography, sub-area of Biogeography, and of Phytosociology, as a sub-branch of Phytogeography, demonstrating the close connection between these and geographic science. As methodological processes consisted of literature review on the subject, document analysis on electronic sites, elaboration of a schema and explanatory table. The research points out that Physical Geography created subareas that aimed to understand natural phenomena in integral parts, Biogeography, for example, branched out into distinct parts such as Phytogeography and Phytosociology to understand the spatialization and organization of plant communities, and above all, characterize them. [ABSTRACT FROM AUTHOR]