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	Provedor de dados Ecology and Society (2) Acta Botanica (1) Autor Frelich, Lee E; University of Minnesota; freli001@maroon.tc.umn.edu (1) Lenza,Eddie (1) Maracahipes-Santos,Leonardo (1) Peterson, Garry D; McGill University; garry.peterson@mcgill.ca (1) Reich, Peter B; University of Minnesota; preich@forestry.umn.edu (1) Reis,Simone Matias (1) Santos,Josias Oliveira dos (1) Mais... Palavra-chave Alternative stable states (3) Biodiversity (1) Brazilian savanna (1) Conservation (1) Cross-scale edge (1) Disturbance in boreal forest (1) Disturbance severity (1) Eglin Air Force Base (1) Forest response to changes in (1) Forest response to changes in disturbance severity. (1) Longleaf pine (1) Minnesota boreal forest (1) Mortality (1) Oak (1) Probabilistic resilience (1) Recruitment (1) Spatial resilience (1) Stability in boreal forest (1) Mais... Tipo do documento Peer-Reviewed Reports (2) Info:eu-repo/semantics/article (1) Ano 2018 (1) 2002 (1) 1998 (1) País Canada (2) Brazil (1) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Disturbance Severity and Threshold Responses in the Boreal Forest Ecology and Society Frelich, Lee E; University of Minnesota; freli001@maroon.tc.umn.edu; Reich, Peter B; University of Minnesota; preich@forestry.umn.edu. This essay discusses three potential models relating disturbance severity to post-disturbance stand composition in the boreal forest: (1) continuous, where changes in disturbance severity cause a proportional and continuous change in stand composition; (2) discontinuous, where a threshold disturbance severity exists beyond which major changes in composition occur; and (3) the cusp, where thresholds exist and coexistence of two alternative compositional states is possible at the same disturbance severity. Any of the three models may be appropriate in different stands or different parts of the boreal forest. If the actual model does not correspond to that assumed by forest managers, then forest harvesting practices may cause unexpected sudden changes in... Tipo: Peer-Reviewed Reports Palavras-chave: Alternative stable states; Disturbance in boreal forest; Disturbance severity; Forest response to changes in; Minnesota boreal forest; Stability in boreal forest; Forest response to changes in disturbance severity.. Ano: 1998 Estimating Resilience Across Landscapes Ecology and Society Peterson, Garry D; McGill University; garry.peterson@mcgill.ca. Although ecological managers typically focus on managing local or regional landscapes, they often have little ability to control or predict many of the large-scale, long-term processes that drive changes within these landscapes. This lack of control has led some ecologists to argue that ecological management should aim to produce ecosystems that are resilient to change and surprise. Unfortunately, ecological resilience is difficult to measure or estimate in the landscapes people manage. In this paper, I extend system dynamics approaches to resilience and estimate resilience using complex landscape simulation models. I use this approach to evaluate cross-scale edge, a novel empirical method for estimating resilience based on landscape pattern. Cross-scale... Tipo: Peer-Reviewed Reports Palavras-chave: Alternative stable states; Cross-scale edge; Eglin Air Force Base; Longleaf pine; Oak; Probabilistic resilience; Spatial resilience. Ano: 2002 Temporal changes in species composition, diversity, and woody vegetation structure of savannas in the Cerrado-Amazon transition zone Acta Botanica Maracahipes-Santos,Leonardo; Santos,Josias Oliveira dos; Reis,Simone Matias; Lenza,Eddie. ABSTRACT Vegetation in the transition between tropical forest and savanna is hyperdynamic and there is evidence that in the absence of fire, forest advances over savanna. Between 2008 and 2013 we evaluated changes in species composition and diversity and in the structure of the woody vegetation of savanna physiognomies in the transition between the Cerrado and Amazon biomes that were fire free for 11 years. The physiognomies form a gradient from savanna woodland (Typical Cerrado - TC), to low woodland (Dense Cerrado - DC), to woodland (locally called Cerradão - CO). We hypothesise that: 1) the more open physiognomies (TC and DC) are more dynamic compared to the closed physiognomy (CO); and 2) in the absence of fire vegetation tends to become more forested.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Alternative stable states; Biodiversity; Brazilian savanna; Conservation; Mortality; Recruitment. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000200254 Registros recuperados: 3 Primeira ... 1 ... Última

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