A Multimetric Macroinvertebrate Index for the Implementation of the European Water Framework Directive in French Guiana, East Amazonia

Dedieu, Nicolas; Clavier, Simon; Vigouroux, Régis; Cerdan, Philippe; Céréghino, Régis

doi:10.1002/rra.2874

Cited by 23 publications

(7 citation statements)

References 44 publications

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“…Nevertheless, in the last 20 years a considerable amount of information has been produced in South and Central America on the ecology, biodiversity and response of organisms to environmental stressors in rivers [ 108 ] such as in: Uruguay [ 109 ]; Paraguay [ 110 ]; Bolivia [ 111 ]; Chile [ 112 ]; Colombia [ 113 ]; Peru [ 114 ]; Ecuador [ 115 ]; Guiana Francesa [ 116 ]; Venezuela [ 117 ]; Brazil [ 118 , 119 ]. Most studies were conducted based on a single or few temporal samplings with some exceptions covering multiple years, such as in studies of the Rio das Velhas basin, Minas Gerais, Brazil [ 120 , 121 ].…”

Section: Biological Assessment Of Riversmentioning

confidence: 99%

The Biological Assessment and Rehabilitation of the World’s Rivers: An Overview

Feio

Hughes

Callisto

et al. 2021

Water

122

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The biological assessment of rivers i.e., their assessment through use of aquatic assemblages, integrates the effects of multiple-stressors on these systems over time and is essential to evaluate ecosystem condition and establish recovery measures. It has been undertaken in many countries since the 1990s, but not globally. And where national or multi-national monitoring networks have gathered large amounts of data, the poor water body classifications have not necessarily resulted in the rehabilitation of rivers. Thus, here we aimed to identify major gaps in the biological assessment and rehabilitation of rivers worldwide by focusing on the best examples in Asia, Europe, Oceania, and North, Central, and South America. Our study showed that it is not possible so far to draw a world map of the ecological quality of rivers. Biological assessment of rivers and streams is only implemented officially nation-wide and regularly in the European Union, Japan, Republic of Korea, South Africa, and the USA. In Australia, Canada, China, New Zealand, and Singapore it has been implemented officially at the state/province level (in some cases using common protocols) or in major catchments or even only once at the national level to define reference conditions (Australia). In other cases, biological monitoring is driven by a specific problem, impact assessments, water licenses, or the need to rehabilitate a river or a river section (as in Brazil, South Korea, China, Canada, Japan, Australia). In some countries monitoring programs have only been explored by research teams mostly at the catchment or local level (e.g., Brazil, Mexico, Chile, China, India, Malaysia, Thailand, Vietnam) or implemented by citizen science groups (e.g., Southern Africa, Gambia, East Africa, Australia, Brazil, Canada). The existing large-extent assessments show a striking loss of biodiversity in the last 2–3 decades in Japanese and New Zealand rivers (e.g., 42% and 70% of fish species threatened or endangered, respectively). A poor condition (below Good condition) exists in 25% of South Korean rivers, half of the European water bodies, and 44% of USA rivers, while in Australia 30% of the reaches sampled were significantly impaired in 2006. Regarding river rehabilitation, the greatest implementation has occurred in North America, Australia, Northern Europe, Japan, Singapore, and the Republic of Korea. Most rehabilitation measures have been related to improving water quality and river connectivity for fish or the improvement of riparian vegetation. The limited extent of most rehabilitation measures (i.e., not considering the entire catchment) often constrains the improvement of biological condition. Yet, many rehabilitation projects also lack pre-and/or post-monitoring of ecological condition, which prevents assessing the success and shortcomings of the recovery measures. Economic constraints are the most cited limitation for implementing monitoring programs and rehabilitation actions, followed by technical limitations, limited knowledge of the fauna and flora and their life-history traits (especially in Africa, South America and Mexico), and poor awareness by decision-makers. On the other hand, citizen involvement is recognized as key to the success and sustainability of rehabilitation projects. Thus, establishing rehabilitation needs, defining clear goals, tracking progress towards achieving them, and involving local populations and stakeholders are key recommendations for rehabilitation projects (Table 1). Large-extent and long-term monitoring programs are also essential to provide a realistic overview of the condition of rivers worldwide. Soon, the use of DNA biological samples and eDNA to investigate aquatic diversity could contribute to reducing costs and thus increase monitoring efforts and a more complete assessment of biodiversity. Finally, we propose developing transcontinental teams to elaborate and improve technical guidelines for implementing biological monitoring programs and river rehabilitation and establishing common financial and technical frameworks for managing international catchments. We also recommend providing such expert teams through the United Nations Environment Program to aid the extension of biomonitoring, bioassessment, and river rehabilitation knowledge globally.

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Section: Biological Assessment Of Riversmentioning

confidence: 99%

The Biological Assessment and Rehabilitation of the World’s Rivers: An Overview

Feio

Hughes

Callisto

et al. 2021

Water

122

View full text Add to dashboard Cite

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“…Although several macroinvertebrate indices enabling the biological evaluation of freshwater ecosystems are available (e.g. Couceiro et al 2012;Dedieu et al 2016), these are seldom used because to our knowledge, there is currently no environmental law or regulation relying on these in this ecoregion. One exception in that respect is French Guiana, which must comply with the European Water Framework Directive.…”

Section: In Aquatic Ecosystemsmentioning

confidence: 99%

Advances and prospects of environmental DNA in neotropical rainforests

Zinger

Donald

Brosse

et al. 2020

Advances in Ecological Research

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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“…in Thailand; Boonsoong et al, 2008). Recent studies conducted in tropical areas showed that family-level resolution successfully detect anthropogenic impairment (Dedieu et al, 2015). However, genus-level would have provided more accurate information on water integrity (Lenat & Resh, 2001) and on environmental factors influencing communities (e.g.…”

Section: Discussion -Conclusionmentioning

confidence: 99%

Spatial and temporal variation of benthic macroinvertebrates in the Nam Gnom Basin receiving discharged waters from the Nam Theun 2 Reservoir (Lao PDR)

Clavier¹,

Cottet

Favriou

et al. 2015

Hydroécol. Appl.

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-In order to assess the impact of water release in the downstream area of the Nam Theun 2 Reservoir (Lao PDR), the spatial and temporal variation of benthic macroinvertebrates was explored. Between 2010 and 2012, five sites were monitored in the Nam Gnom Basin, a tributary of the Xe Bangfai River, receiving the turbinated waters. Repeatedtime collections revealed the presence of 109 taxa mainly identified to the family level, attesting to a rich biota. Preliminary results did not show shifts in diversity, population composition, and feeding metrics. Redundancy Analysis indicated that the altitudinal gradient (i.e. altitude and altitude-related variables) remained the major environmental factor influencing the macroinvertebrates distribution before water discharge. The presence of a tributary downstream of the release point, and the respect of the natural river inflow can explain the preservation of natural conditions. More samples and a strengthened ecological knowledge of Southeast Asian macroinvertebrates are still required to confirm these preliminary results.Key words -freshwater invertebrates, Southeast Asia, biomonitoring, hydropower, downstream section Résumé -Afin d'évaluer l'impact du relâcher des eaux dans la zone aval du Réservoir Nam Theun 2 (RDP du Laos), la variabilité spatio-temporelle des invertébrés aquatiques a été étudiée. Entre 2010 et 2012, cinq sites ont été échantillonnés sur le bassin de la Nam Gnom, un affluent de la rivière Xe Bangfai, qui reçoit les eaux turbinées. Les prélèvements issus du suivi ont permis de mettre en évidence la présence de 109 taxa principalement

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A Multimetric Macroinvertebrate Index for the Implementation of the European Water Framework Directive in French Guiana, East Amazonia

Cited by 23 publications

References 44 publications

The Biological Assessment and Rehabilitation of the World’s Rivers: An Overview

The Biological Assessment and Rehabilitation of the World’s Rivers: An Overview

Advances and prospects of environmental DNA in neotropical rainforests

Spatial and temporal variation of benthic macroinvertebrates in the Nam Gnom Basin receiving discharged waters from the Nam Theun 2 Reservoir (Lao PDR)

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