Directrices para la aplicación de las categorías y criterios de la Lista Roja de Ecosistemas de UICN versión 1.0

Bland, Lucie M.; Keith, Darren; Miller, R.M.; Murray, Nicholas J.; Rodríguez, Jordi

doi:10.2305/iucn.ch.2016.rle.1.es

Cited by 24 publications

(22 citation statements)

References 125 publications

(164 reference statements)

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“…A detailed description of the RLE assessment process is provided by Bland et al (2016) and Murray et al (2016). In short, this entails describing the fringe mangrove ecosystem, identifying suitable variables to assess ecosystem degradation, and defining ecosystem collapse as bounded thresholds in these variables.…”

Section: Methodsmentioning

confidence: 99%

“…persistent sea level rise potentially resulting in a transition to peat swamp forest (IUCN, 2012) or deforestation for aquaculture resulting in a transition to brackish water ponds (Primavera & Esteban, 2008). When it comes to assessing spatially explicit RLE criteria (namely criterion A, which assesses changes in spatial distribution over a given timeframe, and criterion B, which assesses the size of the current ecosystem distribution; Bland et al, 2016), fringe mangroves were considered collapsed when their mapped distribution declines to zero (100% loss). Specifically, the collapse of the fringe mangrove ecosystem is defined as the loss of the characteristic native biota, Avicennia marina…”

Section: Ecosystem Collapse Indicatorsmentioning

confidence: 99%

“…Predicting where and when transitions into novel ecosystems may occur is however often difficult (Keith, 2015) since the number of species and processes that can change before an ecosystem loses its original identity has rarely been quantified (Boitani, Mace & Rondini, 2015). Three years ago, the International Union for the Conservation of Nature (IUCN) adopted the Red List of Ecosystems (RLE) Categories and Criteria as a robust and consistent tool for monitoring the risk status of ecosystems in order to plan appropriate conservation actions (Keith et al, 2013;Bland et al, 2016). Key to the RLE assessments is the concept of ecosystem collapse, defined there as the endpoint to ecosystem decline, "when it is virtually certain that its defining biotic or abiotic features are lost from all occurrences, and the characteristic native biota are no longer sustained" (Bland et al 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Three years ago, the International Union for the Conservation of Nature (IUCN) adopted the Red List of Ecosystems (RLE) Categories and Criteria as a robust and consistent tool for monitoring the risk status of ecosystems in order to plan appropriate conservation actions (Keith et al, 2013;Bland et al, 2016). Key to the RLE assessments is the concept of ecosystem collapse, defined there as the endpoint to ecosystem decline, "when it is virtually certain that its defining biotic or abiotic features are lost from all occurrences, and the characteristic native biota are no longer sustained" (Bland et al 2016). Two of the risk assessment criteria assess spatial symptoms of ecosystem collapse through declines in distribution (Criterion A) and restricted distribution (Criterion B); two criteria assess functional symptoms of ecosystem collapse through environmental degradation (Criterion C) and biotic disruption (Criterion D); the final criterion (Criterion E) evaluates quantitative estimates of the risk of collapse through the integration of multiple threats and symptoms into models of ecosystem dynamics (Bland et al 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Key to the RLE assessments is the concept of ecosystem collapse, defined there as the endpoint to ecosystem decline, "when it is virtually certain that its defining biotic or abiotic features are lost from all occurrences, and the characteristic native biota are no longer sustained" (Bland et al 2016). Two of the risk assessment criteria assess spatial symptoms of ecosystem collapse through declines in distribution (Criterion A) and restricted distribution (Criterion B); two criteria assess functional symptoms of ecosystem collapse through environmental degradation (Criterion C) and biotic disruption (Criterion D); the final criterion (Criterion E) evaluates quantitative estimates of the risk of collapse through the integration of multiple threats and symptoms into models of ecosystem dynamics (Bland et al 2016). The RLE assessment is based on a conceptual model which summarises the most important biotic and abiotic components of a given system, as well as significant ecosystem functions and processes.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Assessing ecosystem collapse risk in ecosystems dominated by foundation species: The case of fringe mangroves

Marshall

Bühne

Bland

et al. 2018

Ecological Indicators

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Ecosystem collapse, i.e. the endpoint of ecosystem decline, is a central concept of IUCN Red List of Ecosystems (RLE) assessments and the identification of ecosystems most vulnerable to global environmental change. Estimating collapse risk can be challenging for ecosystems reliant on a few dominant species to perform most of their functions because the range of suitable and feasible indicators is small. This study investigates the robustness and adequacy of the current RLE approach for risk assessments in such ecosystems, using a fringe mangrove ecosystem as a case study. Following the RLE protocol, we constructed a conceptual model of the key ecosystem processes for the Philippines' fringe mangrove forests. Satellite remote sensing data and existing maps of mangrove forests were then combined to assess the spatial distribution of the ecosystem considered (Criteria A and B), while the Normalized Difference Vegetation Index was used to assess biotic degradation (Criterion D). Insufficient data were available to assess Criteria C (environmental degradation) and E (quantitative analysis). Overall, the ecosystem was assessed as 'Least Concern' based on extensive geographic distribution and only weak support for declines in extent. Criterion D was classed as 'Data Deficient' since there was no clear relationship between the vegetation index and fringe mangrove degradation. Our results demonstrate how gaps in our appreciation and understanding of the structure and functioning of ecosystems are more likely to impede risk assessments of ecosystems characterised by a small number of foundation species, due to the low level of redundancy between candidate indicators available for their assessments. Satellite remote sensing combined with derivation of explicit conceptual ecosystem models provides a way to structure efforts to identify suitable indicators as well as opportunities to overcome many of these challenges, even for relatively data-poor ecosystems.

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Section: Methodsmentioning

confidence: 99%

Section: Ecosystem Collapse Indicatorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Assessing ecosystem collapse risk in ecosystems dominated by foundation species: The case of fringe mangroves

Marshall

Bühne

Bland

et al. 2018

Ecological Indicators

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Recovery of the crucian carp Carassius carassius (L.): Approach and early results of an English conservation project

Sayer

Emson

Patmore

et al. 2020

Aquatic Conservation

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1. The crucian carp Carassius carassius, a cyprinid fish characteristic of small ponds, is in decline throughout most of its European range, including in England where it is currently thought to be non-native. 2. The present study, undertaken by the Norfolk Crucian Project, reports on reductions in pond populations of crucian carp in Norfolk, eastern England as well as the success of recent introduction/re-introduction efforts in terms of crucian survival, recruitment and growth over the last 10 years. 3. A 72% decline in crucian carp distribution was observed between the 1950s-1980s and the 2010s. Of 18 crucian carp introductions/re-introductions to restored and suitable existing ponds, 17 were successful in terms of survival,

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Developing a standardized definition of ecosystem collapse for risk assessment

Bland

Rowland

Regan

et al. 2018

Frontiers in Ecol & Environ

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The International Union for Conservation of Nature (IUCN) Red List of Ecosystems is a powerful tool for classifying threatened ecosystems, informing ecosystem management, and assessing the risk of ecosystem collapse (that is, the endpoint of ecosystem degradation). These risk assessments require explicit definitions of ecosystem collapse, which are currently challenging to implement. To bridge the gap between theory and practice, we systematically review evidence for ecosystem collapses reported in two contrasting biomes – marine pelagic ecosystems and terrestrial forests. Most studies define states of ecosystem collapse quantitatively, but few studies adequately describe initial ecosystem states or ecological transitions leading to collapse. On the basis of our review, we offer four recommendations for defining ecosystem collapse in risk assessments: (1) qualitatively defining initial and collapsed states, (2) describing collapse and recovery transitions, (3) identifying and selecting indicators of collapse, and (4) setting quantitative collapse thresholds.

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Directrices para la aplicación de las categorías y criterios de la Lista Roja de Ecosistemas de UICN versión 1.0

Cited by 24 publications

References 125 publications

Assessing ecosystem collapse risk in ecosystems dominated by foundation species: The case of fringe mangroves

Assessing ecosystem collapse risk in ecosystems dominated by foundation species: The case of fringe mangroves

Recovery of the crucian carp Carassius carassius (L.): Approach and early results of an English conservation project

Developing a standardized definition of ecosystem collapse for risk assessment

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