Considering temporal flow variability of non-perennial rivers in assessing ecosystem service provision

Kaletová, Tatiana; Rodríguez‐Lozano, Pablo; Berger, Elisabeth; Filipe, Ana Filipa; Logar, Ivana; Alves, Maria Helena; Calleja, Eman J.; Jordà-Capdevila, Dídac

doi:10.1016/j.ecoser.2021.101368

Cited by 10 publications

(8 citation statements)

References 37 publications

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“…They contribute highly to biodiversity in several ways: (i) they host unique aquatic organisms with adaptations against the absence of surface water and desiccation (Sarremejane et al, 2017; Rodríguez‐Lozano et al, 2019); (ii) they act as refuge and corridors for terrestrial fauna (Sánchez‐Montoya et al, 2016; Sánchez‐Montoya et al, 2022); and (iii) temporary streams in arid regions harbour biota not found in the boundary area owing to their higher moisture and vegetation cover (Soykan et al, 2012). Moreover, these ecosystems play an important role in biogeochemical cycles (von Schiller et al, 2019) and provide numerous ecosystem services to human societies that are linked to their water intermittency (Boulton, 2014; Kaletova et al, 2021). These ecosystems are affected by increasing human alterations, owing to catchment land use, invasive species and hydrological modification, among other stressors (Stubbington et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

“…(iii) temporary streams in arid regions harbour biota not found in the boundary area owing to their higher moisture and vegetation cover (Soykan et al, 2012). Moreover, these ecosystems play an important role in biogeochemical cycles (von Schiller et al, 2019) and provide numerous ecosystem services to human societies that are linked to their water intermittency (Boulton, 2014;Kaletova et al, 2021). These ecosystems are affected by increasing human alterations, owing to catchment land use, invasive species and hydrological modification, among other stressors (Stubbington et al, 2018).…”

Section: Conservation Of Temporary Riversmentioning

confidence: 99%

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Conservation of temporary streams: The relevance of spatiotemporal variation in beta diversity

Rodríguez‐Lozano,

Lobera,

Pardo

et al. 2023

Aquatic Conservation

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Temporary streams are affected by increasing human alterations, and this situation is expected to worsen under global change. Understanding biodiversity trends and the contribution of sites and species to β‐diversity is of high importance in establishing conservation priorities at a regional scale. This paper focuses on aquatic macroinvertebrate biodiversity in temporary streams on the island of Mallorca, using a space–time framework. Differences in α‐diversity, spatial–temporal fluctuations of β‐diversity, local contribution to β‐diversity (LCBD) and species contribution to β‐diversity (SCBD) were examined. Data analysis shows that only the space–time approach to β‐diversity can capture the full variation of macroinvertebrate composition in temporary streams. This confirmed our hypothesis that β‐diversity patterns are better explained by incorporating the temporal dimension to the space–time approach. Regarding β‐diversity components, species replacement components always dominate over richness difference. These results imply that β‐diversity variability is mainly caused by differences in species composition, while the relative difference in richness among sites has a minor role. Consequently, the optimal conservation strategy requires the protection of several undisturbed sites. Although the LCBD analysis did not detect any keystone sites, it helped to identify those sites that should be prioritized for restoration efforts (sites with high LCBD values and low α‐diversity). We also concluded that SCBD analysis should be interpreted carefully, as rare endemic species had low SCBD values. This study demonstrated the need for incorporating temporal variability in the analysis of biodiversity patterns in highly dynamic ecosystems, such as temporary streams. It also revealed the urgency of preserving a spatial network of temporary streams under non‐impaired conditions that can act as dispersal point sources to other streams for biodiversity conservation. These insights are relevant for Mallorca and other Mediterranean islands, and for the protection of temporary rivers elsewhere.

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Section: Discussionmentioning

confidence: 99%

Section: Conservation Of Temporary Riversmentioning

confidence: 99%

Conservation of temporary streams: The relevance of spatiotemporal variation in beta diversity

Rodríguez‐Lozano,

Lobera,

Pardo

et al. 2023

Aquatic Conservation

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“…A dry streambed can, for example, serve as a bank for eggs of aquatic invertebrates and seeds of aquatic plants, while isolated pools are refugia for aquatic species (Brock et al, 2003;Steward et al, 2012). Thus, it is essential to accurately monitor the different flow states of temporary streams for hydro-ecological research and management (Skoulikidis et al, 2017;Kaletova et al, 2021). However, temporary streams have mostly been neglected in hydrological studies and monitoring networks (Benstead and Leigh, 2012;Snelder et al, 2013;Godsey and Kirchner, 2014;, even though more than half of the global stream network is nonperennial (Larned et al, 2010;Datry et al, 2014;Messager et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

How well can people observe the flow state of temporary streams?

Scheller,

van Meerveld,

Seibert

2024

Front. Environ. Sci.

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Even though more than half of the global river network does not have continuous flow, temporary (i.e., non-perennial) streams are poorly represented in traditional monitoring networks. Therefore, new approaches are needed to monitor these streams. Citizen science provides an interesting opportunity as people, equipped with smartphones, can observe the flow state of temporary streams. Such observations can go beyond a simple classification of flow vs. no flow and include ecologically important states, such as standing water, isolated pools, or wet streambeds. However, the quality of citizen science data for temporary streams has so far not been thoroughly assessed. Therefore, we asked more than 1,200 people during 23 field days to visually determine the flow state of eight temporary streams based on six classes ranging from a dry streambed to flowing water. Participants could most clearly distinguish a flowing stream from a non-flowing stream. The overall agreement between participants was 66%; 83% of the selected flow states were within one class of the most frequently selected flow state. The agreement with the expert was lower (56% chose the same class, and 79% chose a state within one class). Inconsistencies between the selected flow state and answers to specific yes-no statements about the temporary stream were largest for the dry streambed and damp/wet streambed states. These discrepancies were partly caused by participants looking at different parts of the stream (i.e., participants considered the flow state for a location further upstream or downstream). To ensure that all participants determine the flow state comparably, we recommend clear definitions of the flow state classes, detailed information on the exact location for which the flow state needs to be determined, as well as more training.

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“…These systems support rich and unique biological communities (Meyer et al, 2007) with native taxa that are adapted to the temporary nature of these waterways (Kerezsy et al, 2017; Stubbington et al, 2017). Further, intermittent streams provide important ecosystem services, including sources of drinking water, flood control, nutrient cycling, and cultural services, whose provision is highly dependent on the temporal flow variability of these streams (Kaletova et al, 2021; Stubbington et al, 2020). Despite their ubiquity and environmental importance, intermittent streams remain vulnerable to numerous threats, including altered climate regimes (Larned et al, 2010), anthropogenic disturbance (Chiu et al, 2017), and changing regulatory protections (Keiser et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ecological consequences of shifting habitat mosaics within and across years in an intermittent stream

et al. 2023

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1. Intermittent streams that cease to flow during dry periods represent more than half of the global river network, and are particularly common in arid and semi-arid regions. They are characterised by high spatial and temporal variability in aquatic habitat, forming a shifting habitat mosaic that supports diverse assemblages of native and endemic species. Climate projections for much of the world predict greater variation in precipitation and increasing drought severity, suggesting a need to better understand species' responses to habitat variability within intermittent stream ecosystems. Here we explored changes in the distribution and abundance of aquatic vertebrates in response to a wide range of annual hydrologic conditions within a Mediterranean-climate intermittent stream in California.2. We conducted wetted habitat and vertebrate abundance surveys during the dry season for 7 years, spanning both extreme wet and extreme dry annual precipitation conditions, and characterised the variation in the size, persistence, and spatial configuration of wetted habitats in relation to the observed abundance and composition of fishes, amphibians, and aquatic reptiles. We characterised the habitat mosaic using a k-means clustering approach, and identified three habitat types with distinct size, persistence, and connectivity distributions.3. We found that some wetted habitat units persisted across all years, regardless of antecedent precipitation, whereas others dried in all but the wettest years.We determined that persistent pools, a subset of wetted habitats present in the stream, supported diverse assemblages of native species even during extreme dry conditions, while transient pools acted as important habitat for particular species and life stages, including a young-of-year minnow species. Linear mixed models indicated that species' abundances were influenced by habitat quantity, quality, and connectivity. 4. Our study -considers intermittent streams as shifting habitat mosaics and uses multi-year surveys to understand the ecological consequences of habitat variability within and across years to advance our understanding of intermittent stream ecology and the implications of climate change for spatial and temporal patterns of refuge habitat.

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Considering temporal flow variability of non-perennial rivers in assessing ecosystem service provision

Cited by 10 publications

References 37 publications

Conservation of temporary streams: The relevance of spatiotemporal variation in beta diversity

Conservation of temporary streams: The relevance of spatiotemporal variation in beta diversity

How well can people observe the flow state of temporary streams?

Ecological consequences of shifting habitat mosaics within and across years in an intermittent stream

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