Conservation planning for river-wetland mosaics: A flexible spatial approach to integrate floodplain and upstream catchment connectivity

Reis, Vanessa; Hermoso, Virgilio; Hamilton, Stephen K.; Bunn, Stuart E.; Linke, Simon

doi:10.1016/j.biocon.2019.05.042

Cited by 25 publications

(18 citation statements)

References 55 publications

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“…The land conversion in these systems has already adversely affected fish biomass and functional diversity (Arantes et al, 2019), affecting the productivity of fisheries and the livelihoods they sustain (Castello et al, 2018). Thus, there is an increasing need for more ecologically meaningful conservation planning for these systems by addressing their hydrological complexity (Reis, Hermoso, Hamilton, Bunn, Fluet‐Chauinard, et al, 2019, Reis, Hermoso, Hamilton, Bunn, & Linke, 2019).…”

Section: Discussionmentioning

confidence: 99%

“…However, the Amazon basin still needs effective conservation actions to safeguard freshwater biodiversity, mostly in large rivers and their floodplains. These actions should include systematic conservation planning and appropriate methods based on freshwater ecological characteristics to design an effective series of freshwater PAs (Hermoso, Kennard, & Linke, 2012; Jézéquel, Tedesco, Darwall, et al, 2020; Linke, Turak, & Nel, 2011; Reis, Hermoso, Hamilton, Bunn, et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

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The representativeness of protected areas for Amazonian fish diversity under climate change

Frederico

Dias

Jézéquel

et al. 2021

Aquatic Conservation

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The Amazon basin has been subjected to extreme climatic events and according to climate change projections this hydrosystem could face changes in the natural dynamic of flood cycles that support the feeding and reproduction of many fish species, threatening aquatic biodiversity. Protected areas (PAs) are the main tools used to safeguard the biodiversity in the long term; however, they are fixed areas that could be subject to climate change, questioning their future efficiency in protecting biodiversity. The Amazon basin currently benefits from a relatively high level of protection as 52% of its catchment area is under the form of true PAs or indigenous lands. However, the capacity of these PAs to protect freshwater biodiversity remains unclear as they have generally been assessed with little regard to freshwater ecosystems and their hydrological connectivity. Here, the aim was to evaluate the effectiveness of PAs in representing the Amazon fish fauna under current and future climatic conditions. A macroecological approach was used to estimate the minimum size of the geographical range needed by each species to achieve long‐term persistence, by a combined function of range size and body size, two ecological traits known to influence species extinction risk. In future the Amazon basin could risk losing 2% of its freshwater fish fauna owing to unsuitable climatic conditions, with a further 34% adversely affected. The present Amazon network of PAs will cover the minimum required range for species persistence for more than 60% of the freshwater fish species analysed under the future climate scenario. However, more than 25% of the future susceptible species are currently concentrated in large tributaries and in the central‐lower Amazon floodplain where few PAs occur, highlighting the lack of appropriate conservation actions for these specific water bodies.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

The representativeness of protected areas for Amazonian fish diversity under climate change

Frederico

Dias

Jézéquel

et al. 2021

Aquatic Conservation

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“…Bases de dados espaciais, como por exemplo o HydroSheds (Lehner & Grill 2013), e mais recentemente o HydroAtlas (Linke et al 2019a), juntamente com produtos de sensoriamento remoto, permitem aplicações de PSC em diferentes escalas de paisagem hidrográfica (veja exemplos sobre abordagens para estudos da paisagem hidrográfica em Brejão et al 2021). Para isso geralmente são utilizados os ENMs para a obtenção de informação sobre a distribuição das espécies associadas a variáveis ambientais, já que dados empíricos de ocorrência das espécies são geralmente escassos.…”

Section: Maxentunclassified

“…Esse tipo de abordagem valoriza uma perspectiva ecológica na seleção de áreas para proteção, como por exemplo, a conectividade entre áreas para garantir a persistência das espécies. O custo pode ser interpretado como o valor econômico das ações de conservação, ou como o custo indireto imposto pela presença de impacto humano nos arredores de áreas de conservação (Reis et al 2019a).…”

Section: Maxentunclassified

“…Embora essas ferramentas tenham sido projetadas para o planejamento de conservação em ambientes marinhos e terrestres, elas foram adaptadas e aplicadas com sucesso em ecossistemas de água doce. Essas ferramentas foram adaptadas para incorporar as dimensões da conectividade dos ecossistemas aquáticos, como por exemplo: 1) a conectividade longitudinal dos rios (Moilanen et al 2008, Hermoso et al 2011a; 2) a conectividade longitudinal e lateral entre sub-bacias (Hermoso et al 2012); 3) o tempo de permanência da inundação em ambientes sazonais (Hermoso et al 2013) ; 4) a propagação de impactos no sentido montante-jusante e a importância da condição ecológica (Linke et al 2012); 5) a conectividade vertical no planejamento de conservação das águas subterrâneas ; 6) e também uma abordagem direta das conectividades longitudinal e lateral para incluir a dinâmica espaço-temporal de planícies de inundação e rios (Reis et al 2019a).…”

Section: Maxentunclassified

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Conservação De Peixes De Riacho: Planejamento E Políticas Públicas

2021

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Conservation biology has historically been based on principles to protect terrestrial ecosystems, with marine and freshwater ecosystems left behind. As a result, often, protected areas are defined with bases in forest cover and terrestrial characteristics overseeing important components of connectivity of riverine landscapes, such as the connectivity between rivers, lakes, and streams. It is important to emphasize that forest protection is extremely important, but that alone cannot safeguard the protection of freshwater ecosystems. Therefore, our discussion should lead, not to the disregard of terrestrial efforts but to the complementation of existing efforts for forest protection with the addition of areas that can also protect freshwater ecosystems. Fluvial ecosystems are hierarchical and nested systems, with multidimensional connectivity including longitudinal (upstream-downstream), lateral (floodplains and lakes), temporal (seasons) and vertical (groundwaters) connections. Systematic Conservation Planning (SCP) is the most well accepted and used method for designing conservation plans based on cost-effective scenarios that include ecological and socio-economic values resulting in thematic maps of priority areas for conservation. Recently, methods to consider the connectivity of freshwater ecosystems were incorporated into spatial prioritization tools. Maps produced using spatial prioritization tools can help decision making on species management and conservation actions, such as plans for species’ impact reduction (PRIM) and action plans for threatened species (PAN). PRIM and PAN use information about species ecology to focus conservation actions onto target species. These conservation action plans must be viable not only ecologically but also economically. In this context, using SCP to guide designs of PRIM and PAN can help stakeholders to achieve better conservation actions in Brazil. Thus, the SCP can improve the conservation and management of freshwater ecosystems, through the integration of science, society and stakeholder.

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Promoting connectivity between priority freshwater sites for conservation in intermittent hydrological systems

Naia

Hermoso

Carvalho

et al. 2021

Aquatic Conservation

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Systematic conservation planning in freshwater ecosystems faces multiple challenges because of the dynamic nature of rivers and their multiple dimensions of connectivity. In intermittent hydrological systems connectivity is functional when water is available, allowing the exchange of aquatic individuals between isolated freshwater ecosystems. Integrating these isolated systems in their hydrological context is essential when identifying priority areas for conservation, in order to try to minimize the propagation of threats into target water bodies (management units) from the surrounding landscape. Here, the use of a systematic planning approach is demonstrated to identify a set of priority management units to preserve freshwater biodiversity in an arid system of fragmented water bodies immersed in a landscape subject to a range of impacts. Twenty‐six water‐dependent taxa from 59 mountain rock pools (gueltas) of three southern Mauritanian mountains were used as a case study. A conservation planning tool (marxan) was used to find priority conservation areas to integrate intermittent hydrological systems in their hydrological context, promote connectivity, and minimize the downstream propagation of threats. Three types of connectivity were analysed: (i) no connectivity, (ii) connectivity between gueltas, and (iii) connectivity between gueltas and sub‐catchments. Considering different types of longitudinal connectivity affects the number and spatial allocation of the priority gueltas selected, and the conservation status of the gueltas and their upstream areas. Incorporating connections between gueltas and upstream locations in the modelling resulted in the selection of gueltas in areas with a low human footprint and in the increased connectivity of the solutions. The results obtained revealed important locations for local biodiversity conservation, and the method presented can be used when assessing the propagation of potential waterborne threats into isolated management units. The framework developed allows connectivity to be addressed in conservation planning. It can be replicated in regions with similar isolated habitats that connect through intermittent hydrological systems and can also be applied to lateral and vertical hydrological connectivity.

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Conservation planning for river-wetland mosaics: A flexible spatial approach to integrate floodplain and upstream catchment connectivity

Cited by 25 publications

References 55 publications

The representativeness of protected areas for Amazonian fish diversity under climate change

The representativeness of protected areas for Amazonian fish diversity under climate change

Conservação De Peixes De Riacho: Planejamento E Políticas Públicas

Promoting connectivity between priority freshwater sites for conservation in intermittent hydrological systems

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