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Bibliographic Details
Main Author:	Sebastião do Amaral Machado
Format:	Artículo científico
Language:	pt
Published:	Universidade Federal de Lavras 2013
Subjects:	Agrociencias Censo valor de cobertura floresta secundária dominância relativa
Online Access:	https://www.redalyc.org/articulo.oa?id=74428921002
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Table of Contents:

COMPARAÇÃO DOS PARÂMETROS FITOSSOCIOLÓGICOS ENTRE TRÊS ESTRATOS DE UM FRAGMENTO DE FLORESTA OMBRÓFILA MISTA Sebastião do Amaral Machado Naiara Teodoro Zamin Rodrigo Geroni Mendes Nascimento Alan Lessa Derci Augustynczik Caroline Sanches Menegazzo Agrociencias Censo valor de cobertura floresta secundária dominância relativa Estudos fitossociológicos baseados em amostragem têm sido muito comuns ao longo dos últimos 20 anos, no entanto, são raramente realizados usando a enumeração completa das árvores (censo). Assim sendo, nesta pesquisa, objetivou-se comparar os parâmetros fitossociológicos entre os três diferentes estratos de um fragmento de Floresta Ombrófila Mista (FOM), quais sejam: FOM Montana, FOM Montana de Bordadura e FOM Aluvial. Essa área de 13,71 ha foi topograficamente dividida em blocos de 50 x 50 metros para melhor controle do inventário florestal a 100% (censo). Todas as árvores com CAP (circunferência medida a 1,30 m do solo) ≥ 31,5 cm foram medidas, georreferenciadas, numeradas, pintadas no DAP e identificadas em nível de espécie. No estrato FOM Montana, a espécie com maior valor de cobertura (VC) foi Araucaria angustifolia, com 30,6%, seguida de Casearia sylvestris com 25,8%. Já, na FOM Montana de Bordadura a espécie que procedeu a Araucaria angustifolia (29,0%), foi Gochnatia polymorpha com 27,2% de VC. O terceiro estrato, FOM Aluvial, apresentou como espécie predominante Schinus terebinthifolius (55,5%), seguida por Sebastiania commersoniana (27,7%) , ambas, características de ambientes aluvionares. Dessa maneira, o estudo permitiu observar que nos três estratos houve a predominância de espécies secundárias de caráter pioneiro, comprovando que a área em questão encontra-se em um estágio secundário de sucessão ecológica em razão de um processo exploratório no passado. 2013 artículo científico 0104-7760 https://www.redalyc.org/articulo.oa?id=74428921002 pt http://www.redalyc.org/revista.oa?id=744 CERNE application/pdf Universidade Federal de Lavras CERNE (Brasil) Num.3 Vol.19

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message.

// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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