Response of macroinvertebrate communities to thermal regime in small Mediterranean streams (southern South America): Implications of global warming

Pedreros, Pablo; Guevara-Mora, Meyer; Stehr, Alejandra; Araneda, Alberto; Urrutia, Roberto

doi:10.1016/j.limno.2020.125763

Cited by 10 publications

(5 citation statements)

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“…Temperature strongly influences benthic community structure, distribution, abundance, and occurrence (Knispel, Sartori, & Brittain, 2006; Watanabe, Mori, & Yoshitaka, 1999). Individuals of families Gripoterygidae and Austroperlidae (Plecoptera) are adapted to narrow, stepped, and low‐temperature streams (Haidekker & Hering, 2008; Pedreros, Guevara‐Mora, Stehr, Araneda, & Urrutia, 2020; Stark, Froehlich, & Zuñiga, 2009), while Helicopsyquidae, Hydroptilidae (Trichoptera), and Beatidae (Ephemeroptera) can easily tolerate high‐temperatures (Haidekker & Hering, 2008; Springer, 2010). Finally, it is crucial to consider that the oxygen concentration varies with the altitude and influences organisms of Ephemeroptera, Plecoptera, and Trichoptera orders (Jacobsen, Rostgard, & Vásconez, 2003).…”

Section: Discussionmentioning

confidence: 99%

Environmental quality assessment in central Andean Rivers: Using the ecological thresholds concept, environmental quality standards, and biotic indexes

PIMENTEL

Oyague

Sánchez

2022

River Research & Apps

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As in many other countries, Peru has the Water Quality Standard (WQS) as the primary tool for managing and diagnosing water resources. An analysis of variable by variable was applied to define water quality as poor or good by setting concentration limits. A second group of tools commonly used are Biotic Indexes based on tolerance of benthic macroinvertebrates to pollution, that reflect the impacts caused by a group of variables, even though they cannot identify which variables determine the viability of the ecosystem. This research proposes to include the Stable States approach to evaluate the ecological integrity in central‐Andes rivers to explore an alternative approach with the capacity to represent a broader number of factors through multivariate analyses. A ten‐year database of biological, physical, and chemical variables measured in five Andean Rivers was evaluated. Our results suggest these rivers fluctuate into two seasonal stable states (wet and dry season), accounting for approximately 41% of the system variability. The wet season stable state was defined by high levels of suspended solids and turbidity, coliform, phosphorus, and some metals. During the dry season, the key variables were dissolved solids, barium, pH, and dissolved oxygen. Likewise, there seems to be a third alternative state influenced by human pressures driven by organic pollution variables that exceed the WQS. Regarding water quality, the concentrations of coliforms, phosphorus, and lead usually exceeded the limits in two stations, but not every year. Between bioindicator indexes, the ABI represented the ecological condition more accurately than EPT.

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Section: Discussionmentioning

confidence: 99%

Environmental quality assessment in central Andean Rivers: Using the ecological thresholds concept, environmental quality standards, and biotic indexes

PIMENTEL

Oyague

Sánchez

2022

River Research & Apps

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“…Stream temperature alteration may force thermally sensitive species to change their geographical distribution range, negatively affecting stream communities, biodiversity and ecosystems (Fenoglio et al 2010;Alba-Tercedor et al 2017;Amundrud and Srivastava 2020). While examining the response of stream invertebrates to changing thermal regimes in South America, Pedreros et al (2020) suggested that changes in stream temperature could lead to the displacement in altitude and latitude of some stream invertebrates. The distribution range of some Australian Paratya spp.…”

Section: Ecological Consequencesmentioning

confidence: 99%

“…Stream invertebrates are ectotherms; as such, they are directly affected by alterations in the thermal regime (Narum et al 2013;Magozzi and Calosi 2015). Mortality may occur as stream temperatures exceed the critical thermal-tolerance limits of individual invertebrate species (Stewart et al 2013;Pedreros et al 2020). When temperatures exceed these lethal limits, the number of individuals of a species in a population is reduced until they become absent from the stream community (Dallas and Rivers-Moore 2018).…”

Section: Introductionmentioning

confidence: 99%

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Plasticity of upper thermal limits of Australian Paratya spp. (Decapoda, Atyidae) and considerations of climate-change adaptation

et al. 2023

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Context. The ability of ectothermic stream invertebrates to adapt to the predicted increases in mean and extreme stream temperatures is crucial to ensuring they continue to exist. Aims. To examine the plasticity of thermal limits of Australian Paratya spp. (Decapoda, Atyidae) from streams in eastern New South Wales (NSW). We hypothesised that the upper lethal temperature (ULT, as indicated by the median lethal temperature, LT 50 ) would be higher for warm water-acclimated shrimp individuals than for winter-acclimatised shrimp individuals because of the importance of acclimatisation temperature. Methods. Controlled experiments were undertaken to determine the ULT by using ramping assays for winter field-acclimatised and warm water laboratoryacclimated Paratya spp. Key results. Warm water-acclimated shrimp individuals demonstrated a significantly higher LT 50 of 36.1°C than did winter-acclimatised shrimp individuals at 34.6°C. Paratya spp. exhibited a limited plasticity for acclimation to warmer temperatures.Conclusions. Results demonstrated the potential vulnerability of ectothermic stream invertebrates to climate change if stream temperatures increase as predicted and thermal thresholds are exceeded. Implications. Understanding the ULT of stream invertebrates helps predict their ability to respond to temperature variability and response to climate change. Increasing resilience through target management of resorting riparian vegetation for shade and securing environmental flows may reduce the impacts of stream warming.

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“…The presence of the different families of macroinvertebrates in riparian ecosystems is also related to water temperature (Haidekker et al, 2008;Itsukushima, 2021). Global warming may cause important changes in the macroinvertebrate composition in Mediterranean streams (Pedreros et al 2020) especially in those with excellent conditions (Daneshvar et al 2017). Water quality may also be compromised because of the temperature rise that reduce, among other factors, the dissolved oxygen in water (Null et al 2017;Jiang et al 2021;Rajesh and Rehana 2022).…”

Section: Introductionmentioning

confidence: 99%

Climate Change Risks on Mediterranean River Ecosystems and Adaptation Measures (Spain)

Estrela-Segrelles

Martínez

Pérez-Martín

2023

Water Resour Manage

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The Mediterranean is one of the most vulnerable regions to climate change impacts. Climate change scenarios predict that water temperature will increase up to 2.2–2.9ºC by the end of the century in Mediterranean rivers. This will cause an impact on water quality (oxygen dissolved reduction), reduce the available habitat of cold-water fish species and affect macroinvertebrates. Risk assessment methodology develops indicators that integrate hazard, exposure and vulnerability. Risk maps are key tools to prioritize the areas in which adaptation measures should be implemented in order to improve the adaptive capacity of ecosystems. The risk of habitat loss and ecosystem damage is very high in Mediterranean rivers. For RCP8.5, the 80% of the waterbodies that currently have brown trout presence are in High Risk (HR) or Very High Risk (VHR) of disappearing in the long term future (2070–2100) and the 35% in the short term (2010–2040). It will affect the middle sections first and the headwaters of the rivers later. The 92% of the waterbodies are in HR-VHR of macroinvertebrate family’s affection (2070–2100) and dissolved oxygen may be reduced by 0.5–0.75 mgO2/l (2070–2100). The restoration of the riverside vegetation is the main adaptation measure. This reduces significantly the stream temperature. Other measures are the groundwater protection and cold-water discharge from the reservoirs.

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Response of macroinvertebrate communities to thermal regime in small Mediterranean streams (southern South America): Implications of global warming

Cited by 10 publications

References 58 publications

Environmental quality assessment in central Andean Rivers: Using the ecological thresholds concept, environmental quality standards, and biotic indexes

Environmental quality assessment in central Andean Rivers: Using the ecological thresholds concept, environmental quality standards, and biotic indexes

Plasticity of upper thermal limits of Australian Paratya spp. (Decapoda, Atyidae) and considerations of climate-change adaptation

Climate Change Risks on Mediterranean River Ecosystems and Adaptation Measures (Spain)

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