Ecosystem stability and resilience: a review of their relevance for the conservation management of lowland heaths

Mitchell, Ruth J.; Auld, M. H. D.; Duc, M.G. Le; Robert, Marrs H.

doi:10.1078/1433-8319-00009

Cited by 83 publications

(87 citation statements)

References 45 publications

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“…Ecologists have developed a variety of approaches to measure ecosystem stability [2,[17][18][19]. In most cases, mathematical models or empirical methods are involved, with the former developed and expanded by Robert May in 1973 [20] using linear stability analysis on models constructed from a statistical universe (randomly constructed communities with randomly assigned interaction strengths).…”

Section: Introductionmentioning

confidence: 99%

The Stability of Revegetated Ecosystems in Sandy Areas: An Assessment and Prediction Index

Huang

Zhang

2015

Water

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Abstract:The stability and sustainability of revegetated ecosystems is a central topic in ecological research. In this study, long-term monitoring and focused research on vegetation, soil and soil moisture from 2006 to 2012 were used to develop a model for evaluating indices of ecosystem stability using the analytical hierarchy process method. The results demonstrated that rainfall (R), vegetation coverage (C), and surface soil moisture (S) were the three most influential factors among the 14 indicators considered in a revegetated desert area in the Tengger Desert, China. A stability index (SI) was defined as SI = VAR (R) × VAR (C)/VAR (S), and a comparative study was conducted to examine the stability index of the natural vegetation community. The SI was divided into three regimes: SI < 0.006 was stable, 0.006 ≤ SI < 0.015 was semi-stable, and 0.015 ≤ SI was unstable. The stable, semi-stable and unstable periods of revegetated ecosystems in our simulations were 191, 17 and 11 years, respectively, within the total modeling period of 219 years. These results indicated that the revegetated desert ecosystem would be stable in most years during the vegetation succession, and this study presents new ideas for future artificial vegetation management in arid desert regions.

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Section: Introductionmentioning

confidence: 99%

The Stability of Revegetated Ecosystems in Sandy Areas: An Assessment and Prediction Index

Huang

Zhang

2015

Water

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“…6). These comparisons highlight the proximity of the Acacia and the evergreen forest ecosystems (Mitchell et al 2000). However, there was evidence of incomplete restoration of the original ecosystem as suggested by other variables.…”

Section: Resultsmentioning

confidence: 91%

Slow restoration of soil microbial functions in an Acacia plantation established on degraded land in Thailand

Doi

Ranamukhaarachchi

2013

Int. J. Environ. Sci. Technol.

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Deforestation diminishes the ecological services that a forest provides (e.g., flood prevention). To restore such services, reforestation is often utilized. The full restoration of the original forest ecosystem, however, can take several decades. The present study was conducted to identify the missing key components for rehabilitation of a degraded plot of land in Thailand on which Acacia trees were planted 18 or 19 years ago. Canopy spectral and soil physicochemical profiles of the Acacia plantation plot showed more advanced rehabilitation than in the soil microbial functions, as represented by soil dehydrogenase activity and community-level physiological profiles, when compared with those of a natural evergreen forest. The slower restoration of the soil microbial functions was thought to: (1) be attributed to the loss of certain microbes that played important roles in the evergreen forest soil, and (2) restrict the restoration of the entire forest ecosystem which was found to be still progressing towards a full restoration of the land's original conditions. Finally, possible measures for further rehabilitation of the ecosystem were discussed.

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“…As florestas secundárias podem ser fontes (com a formação e decomposição da serapilheira) e sumidouros (com a produção de biomassa) de nutrientes (NAMBIAR, 1984), sendo que, nesse último caso, as perdas variam ao longo da sucessão: são altas no início, decaem nos estágios intermediários e voltam a crescer no final, com uma maior senescência de indivíduos (BROWN e LUGO, 1990;MITCHELL et al, 2000).…”

Section: Introductionunclassified

“…A resiliência da ciclagem de nutrientes nos ecossistemas é fundamental para o sucesso da restauração (MITCHELL et al, 2000). Com alta resiliência, os nutrientes acrescidos ao solo durante o processo de formação da serapilheira nos primeiros anos de sucessão, ou após um plantio, permanecem no sistema e aumentam a probabilidade desse sistema progredir para estágios sucessionais mais avançados.…”

Section: Introductionunclassified

Características do solo na restauração de áreas degradadas na Reserva Biológica de Poço das Antas, RJ.

Moraes

Campello²,

Pereira³

et al. 2008

Ciênc. Florest.

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O primeiro passo para garantir o sucesso da restauração de uma área degradada é restabelecer as taxas de ciclagem de nutrientes e os níveis de matéria orgânica no solo. Para avaliar as alterações no solo em áreas sob restauração na Reserva Biológica de Poço das Antas, foram coletadas amostras em áreas de floresta madura, plantios mistos de espécies arbóreas nativas com 8 anos de vida e pastagens abandonadas, nas várzeas e morrotes. O delineamento experimental foi o inteiramente casualizado. As amostras foram coletadas nas profundidades de 0-2,5 cm; 2-5-7,5 cm; e 7,5-20 cm, sendo avaliados o pH do solo e os teores de Al, Ca + Mg, P, K, C e N do solo. Os plantios da várzea apresentaram teores de Ca + Mg, K, C e matéria orgânica do solo (MOS) superiores aos dos outros tratamentos, indicando o rápido estabelecimento de altas taxas de ciclagem de nutrientes e alta taxa de atividade biológica. Os valores das bases trocáveis foram mais altos para a camada mais superficial, pela maior proximidade com a serapilheira. A estabilidade do solo foi alta para todos os tratamentos que apresentaram relação C:N abaixo de 12:1. Para estimar a forma como a MOS está armazenada foi feito o fracionamento químico pela obtenção de extratos ácidos e alcalinos, que apontou maior produção de ácidos fúlvicos (AF) e húmicos (AH), e huminas (HU) no plantio de várzea, para as três profundidades de solo. O plantio no morrote apresentou maiores valores para a relação (AF+AH)/HU, o que sugere uma menor estabilidade nesse tratamento. Os resultados indicam que os plantios têm alto potencial para restabelecer as taxas de ciclagem de nutrientes e os teores de matéria orgânica do solo no curto prazo, e que as áreas de morrote necessitam de técnicas adicionais para acelerar o desenvolvimento dos plantios.

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Ecosystem stability and resilience: a review of their relevance for the conservation management of lowland heaths

Cited by 83 publications

References 45 publications

The Stability of Revegetated Ecosystems in Sandy Areas: An Assessment and Prediction Index

The Stability of Revegetated Ecosystems in Sandy Areas: An Assessment and Prediction Index

Slow restoration of soil microbial functions in an Acacia plantation established on degraded land in Thailand

Características do solo na restauração de áreas degradadas na Reserva Biológica de Poço das Antas, RJ.

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