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

  title={Long-term macroinvertebrate responses to climate change: implications for biological assessment in mediterranean-climate streams},
  author={Justin E. Lawrence and Kevin B. Lunde and Raphael D Mazor and Leah A. B{\^e}che and Eric P. McElravy and Vincent H. Resh},
  booktitle={Journal of the North American Benthological Society},
Abstract Climate change is expected to have strong effects on mediterranean-climate regions worldwide. In some areas, these effects will include increases in temperature and decreases in rainfall, which could have important implications for biological assessment programs of aquatic ecosystems. We used a consistently collected, 20-y benthic macroinvertebrate data set from 4 sites along 2 small northern California streams to examine potential climate-change effects on aquatic communities. The… 
Long-term population and community patterns of benthic macroinvertebrates and fishes in Northern California Mediterranean-climate streams
Long-term studies can document temporal patterns in freshwater ecosystems, and this is particularly important in mediterranean-climate (med-climate) regions because of strong interannual variation in
Climate change and the future of Mediterranean freshwater macroinvertebrates: a model-based assessment
Mediterranean-climate rivers are projected to warm by 0.5–4°C and river flows to decline by 34% by 2071–2100. Using data from 191 Greek streams/rivers, we projected macroinvertebrate responses to 12
Large-scale climatic phenomena drive fluctuations in macroinvertebrate assemblages in lowland tropical streams, Costa Rica: The importance of ENSO events in determining long-term (15y) patterns
It is demonstrated that Neotropical lowland streams are highly dynamic and not as stable as is commonly presumed, with high intra- and inter-annual variability in environmental parameters that change the structure and composition of freshwater macroinvertebrate assemblages.
Vulnerability of stream biota to climate change in mediterranean climate regions: a synthesis of ecological responses and conservation challenges
Freshwater species worldwide are experiencing dramatic declines partly attributable to ongoing climate change. It is expected that the future effects of climate change could be particularly severe in
Ecological status assessment in mediterranean rivers: complexities and challenges in developing tools for assessing ecological status and defining reference conditions
  • H. Dallas
  • Environmental Science
  • 2012
Rivers in mediterranean regions are subject to hydrological extremes. They range from highly stable, perennial ground- or snow-fed systems to highly ephemeral, unpredictable ones in semi-arid
Global warming effects on benthic macroinvertebrates: a model case study from a small geothermal stream
The aim of this study was to predict global warming effects on benthic macroinvertebrate community structure by using a small temperate geothermal stream as a model system. We collected benthic
Climate model variability leads to uncertain predictions of the future abundance of stream macroinvertebrates
This work modeled future flow regimes for the 2050 and 2090 time horizons and tested how flow regimes impact the abundance of 150 macroinvertebrate species and their functional trait compositions in one lowland river catchment and one mountainous river catchments in Europe.
Effects of vineyard coverage and extent on benthic macroinvertebrates in streams of Northern California
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,
High variability is a defining component of mediterranean-climate rivers and their biota
Variability in flow as a result of seasonal precipitation patterns is a defining element of streams and rivers in Mediterranean-climate regions of the world and strongly influences the biota of these
Severity Multipliers as a Methodology to Explore Potential Effects of Climate Change on Stream Bioassessment Programs
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,


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Climate change effects on some ecosystems are still poorly known, particularly where they interact with other climatic phenomena or stressors. We used data spanning 25 years (1981–2005) from
Short‐term climatic trends affect the temporal variability of macroinvertebrates in California ‘Mediterranean’ streams
Summary 1. Long-term studies in ecology are essential for understanding natural variability and in interpreting responses to disturbances and human perturbations. We assessed the long-term
Resilience of fishes and invertebrates to prolonged drought in two California streams
Differences among sites along the flow permanence gradient from temporary to perennial in the response to drought of both invertebrate and fish assemblages are found likely as a result of changes in substrate, vegetation, and other habitat characteristics.
Effects of climate-driven temperature changes on the diversity of freshwater macroinvertebrates
It is shown that trends in average temperature have already had profound impacts on species composition in lakes and streams in Northern Europe, and future climate shifts may induce strong variance in community composition.
Trends in water quality and discharge confound long-term warming effects on river macroinvertebrates
1. Climate-change effects on rivers and streams might interact with other pressures, such as pollution, but long-term investigations are scarce. We assessed trends among macroinvertebrates in 50
Biological traits of benthic macroinvertebrates in California mediterranean-climate streams: long-term annual variability and trait diversity patterns
Although biological traits had high temporal variation within each region, between-region variation was higher than temporal variation in a single region, and there was considerable regional variation in trait diversity metrics along a gradient of increasing taxonomic diversity.
The influence of extreme climatic events and human disturbance on macroinvertebrate community patterns of a Mediterranean stream over 15 y
Abstract We analyzed long-term changes in macroinvertebrate communities in a Mediterranean temporary stream in southern Portugal over 15 y (1993–2008) at 10 locations with 3 degrees of
Taxonomic and biological trait differences of stream macroinvertebrate communities between mediterranean and temperate regions: implications for future climatic scenarios
Streams in mediterranean regions have highly seasonal discharge patterns, with predictable torrential floods and severe droughts. In contrast, discharge is less variable in temperate regions and
Response of benthic macroinvertebrate communities to El Niño related drought events in six upland streams in south-central Ontario
Variation in the mean winter El Nino – Southern Oscillation Index was strongly correlated with drought conditions (zero flow days) in the study streams, and temporal coherence among streams was found in percent EPT, percent chiro...
Vulnerability of biological metrics and multimetric indices to effects of climate change
Abstract Aquatic ecosystems and their fauna are vulnerable to a variety of climate-related changes. Benthic macroinvertebrates are used frequently by water-quality agencies to monitor the status of