Long-term macroinvertebrate responses to climate change: implications for biological assessment in mediterranean-climate streams

Lawrence, Jennifer; Lunde, Kevin B.; Mazor, Raphael D.; Bêche, Leah A.; McElravy, Eric P.; Resh, Vincent H.

doi:10.1899/09-178.1

Cited by 72 publications

(56 citation statements)

References 83 publications

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“…However, flow has been observed to be the dominant driver of benthic-macroinvertebrate assemblage shifts in streams in the Mediterranean-climate region of Northern California (e.g., Beˆche et al, 2006;Beˆche and Resh, 2007a, b;Lawrence et al, 2010). As a result, it would override other variables.…”

Section: Discussionmentioning

confidence: 99%

“…The biological traits for a given taxon may include, for example, the number of generations per year, the ability to enter a state of diapause, and the ability to burrow into the streambed to obtain food, seek refuge from predators, or escape low-flow conditions (Beˆche and Resh, 2007a, b). Biological traits of benthic-macroinvertebrate communities in Mediterranean-climate regions have been shown to be affected by long-term climate variability (Beˆche et al, 2006;Beˆche and Resh, 2007a, b;Bonada et al, 2007a, b;Lawrence et al, 2010) and seasonal differences (Mouthon and Daufresne, 2006;Cordellier and Pfenninger, 2008;Spooner and Vaughn, 2008;Clausnitzer et al, 2009;Hering et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Effects of vineyard coverage and extent on benthic macroinvertebrates in streams of Northern California

Lawrence

Deitch

Resh

2011

Ann. Limnol. - Int. J. Lim.

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-Vineyards are a dominant feature of many landscapes in Mediterranean-climate regions. We examined the effects of streamflow declines, associated with vineyard water-withdrawals for frost protection, on benthic-macroinvertebrate communities at three sites along three small streams in the Mediterraneanclimate region of Northern California. One site was heavily affected by water withdrawals for frost protection, the other two were not. In addition, we examined relationships between vineyard coverage and benthicmacroinvertebrate community response using data from 59 sampling events at 39 sites along 35 small streams in Napa County, California. We tested three a priori hypotheses in terms of the response of biological traits of benthic macroinvertebrates to high vineyard coverage: (1) proportion of individuals with semi-voltine (i.e., one generation every 2 years) life cycles would be lower compared to those with uni-and multi-voltine cycles, (2) proportion of individuals able to undergo diapause would be higher, and (3) proportion of individuals with the ability to burrow into the substrate would be higher. In the three-site study, we found that vineyard water-withdrawals for frost protection coincided with consistently lower values in both the benthic-macroinvertebrate index of biotic integrity (B-IBI) developed for Northern California streams and the ratio of Ephemeroptera-Plecoptera-Trichoptera to Odonata-Coleoptera-Hemiptera individuals (EPT/OCH), a metric developed for European Mediterranean streams. In the broader-scale study, we observed that vineyard-coverage levels above about 20% coincided with lower values of the B-IBI. The semi-voltine life-cycle trait was lower above this level, whereas the diapause and burrowing traits were not affected.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of vineyard coverage and extent on benthic macroinvertebrates in streams of Northern California

Lawrence

Deitch

Resh

2011

Ann. Limnol. - Int. J. Lim.

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“…Thus, it is important to understand these changes in relation to other anthropogenically driven changes for which biomonitoring metrics were designed to monitor. The results highlight the need for further testing of the vulnerability of bioassessment metrics to various aspects of global change and the potential for adopting metrics related specifically to climate change (e.g., [13,33,34]). …”

Section: Changes In Community Metricsmentioning

confidence: 97%

“…These changes can partially be attributed to the methodology used and severity multipliers designed (see below for in-depth discussion). In a 20-year study in Mediterranean streams, richness was found to be a robust metric together with EPT% [13], reflecting that in reality sites experience losses and gains of taxa. Our data are limited to decreasing richness only, as we only represented taxa losses, not gains.…”

Section: Changes In Community Metricsmentioning

confidence: 97%

“…A number of studies focus on effects on either single species (e.g., [9,10]) or communities (e.g., [11]), lacking the step towards the interpretation of these changes in community metrics and associated assessment results. There are few studies on changes in assessment results related to climate change, and few available analyses of long-term data sets [11][12][13]. All mentioned approaches have their methodological challenges.…”

Section: Introductionmentioning

confidence: 99%

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Severity Multipliers as a Methodology to Explore Potential Effects of Climate Change on Stream Bioassessment Programs

Jähnig

Tonkin

Gies

et al. 2017

Water

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Given the scientific consensus that climate change is impacting biodiversity, estimates of future climate change effects on stream communities and assessments of potential biases are necessary. Here, we propose a simple technique to approximate changes in invertebrate and fish biomonitoring results. Taxa lists for 60 (invertebrate) and 52 (fish) sites were each modified by 10 multipliers as stepwise 5% or 10% changes in abundances to simulate potential climate-change severity, reflecting increasing climate change effects. These 10 multipliers were based on the stream zonation preference for invertebrates and the Fish Region Index (FRI) values for fish, both reflecting the longitudinal gradient present in river ecosystems. The original and modified taxa lists were analyzed using the standard assessment software for the particular group, followed by analysis of key biomonitoring metrics. For invertebrates, our simulations affected small good quality streams more often negatively while large poor mountain streams showed a tendency to improve. Forty percent of the invertebrate data sites showed a change in the final ecological assessment class when using the multipliers, with the poor quality sites changing more often. For fish, metric changes were variable, but the FRI ratio showed mostly positive responses, i.e., a shift in FRI towards downstream communities. The results are discussed as an example that facilitates the interpretation of potential climate-change effects with varying severity. Further, we discuss the simplified approach and implications for assessment from climate change induced range shifts.

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Understanding and Managing Climate Change Effects on River Ecosystems

Ormerod

Durance

2012

River Conservation and Management

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Long-term macroinvertebrate responses to climate change: implications for biological assessment in mediterranean-climate streams

Cited by 72 publications

References 83 publications

Effects of vineyard coverage and extent on benthic macroinvertebrates in streams of Northern California

Effects of vineyard coverage and extent on benthic macroinvertebrates in streams of Northern California

Severity Multipliers as a Methodology to Explore Potential Effects of Climate Change on Stream Bioassessment Programs

Understanding and Managing Climate Change Effects on River Ecosystems

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