Short answer

Design models that simulate the impact of fluctuating temperatures on marine species, incorporating thresholds for acute thermal stress.

Field
Modelling
Source
Frontiers in Marine Science (2023)
Method
Experimental
Evidence
Strong effect

Pacific herring embryos exhibit vulnerability to acute temperature increases, with survival significantly reduced at 25°C, while elevated CO2 levels have a less pronounced effect on their thermal tolerance. This modelling research insight is drawn from a 2023 study published in Frontiers in Marine Science. Using Experimental, researchers explored how this design variable affects real-world outcomes. The key design takeaway: Design models that simulate the impact of fluctuating temperatures on marine species, incorporating thresholds for acute thermal stress.

Study
ModellingRecentStrong effect

Environmental Stressors Impact Pacific Herring Embryo Survival

Pacific herring embryos exhibit vulnerability to acute temperature increases, with survival significantly reduced at 25°C, while elevated CO2 levels have a less pronounced effect on their thermal tolerance.

Frontiers in Marine Science · 2023

01

Key Findings

  • 01Pacific herring embryos can withstand acute exposure to 20°C, but survival is greatly reduced after 2-3 hours at 25°C.
  • 02Elevated pCO2 had limited effects on critical thermal maximum (CTmax).
  • 03Survival was significantly lower in embryos reared under chronically warm conditions (12-16°C) compared to 10°C.
  • 04Oxygen consumption rates increased at elevated temperatures and pCO2 levels.
  • 05Embryos reared at higher incubation temperatures (16°C) showed signs of acclimation, with a smaller increase in heart rate after CTmax exposure compared to those reared at 10°C.
02

Application

Design takeaway

Design models that simulate the impact of fluctuating temperatures on marine species, incorporating thresholds for acute thermal stress.

How to apply

Use this data to build predictive models for fish population dynamics under climate change scenarios, focusing on thermal stress events.

Project actions

  • 01When modelling environmental impacts, consider the difference between chronic and acute stress.
  • 02Investigate how different life stages of an organism might have varying sensitivities to environmental changes.
03

Method & Evidence

AimTo investigate the combined effects of ocean acidification (elevated pCO2) and acute warming on the metabolism and survival of Pacific herring embryos, and to assess their critical thermal maximum (CTmax).
MethodExperimental
ProcedureEmbryos of Pacific herring were reared under controlled conditions with varying temperatures (10-16°C) and pCO2 levels (600 and 2000 μatm). Their survival and oxygen consumption rates were measured. Critical thermal tolerance was tested by exposing embryos to short-term temperature fluctuations. Experiments were repeated for winter and spring spawning populations.
ContextMarine biology, climate change research, fisheries science

Variables

IV["Temperature (incubation and acute exposure)","pCO2 levels (ocean acidification)"]
DV["Embryo survival rate","Oxygen consumption rate","Heart contraction rate (heart rate increase post-stress)"]
CV["Species (Pacific herring)","Embryo life stage","Duration of acute temperature exposure","Salinity","Incubation duration"]
04

Strengths & Limitations

Strengths

  • +Investigated the combined effects of two key climate stressors.
  • +Compared different spawning populations, adding a layer of ecological relevance.

Limitations

The study was conducted in a lab setting; real-world ocean conditions are more complex. The specific genetic makeup of the herring populations tested might influence their tolerance.

Reliability & validity

The study's validity is supported by controlled experimental conditions and the replication of experiments across different spawning populations. Reliability could be further enhanced by repeating the experiments with larger sample sizes or across multiple years to account for inter-annual variability.

Think critically

How might the acclimation observed in spring-spawning embryos influence their long-term survival and reproductive success in a rapidly changing ocean?

05

Design Principles

"Environmental tolerance limits are critical parameters for ecological modelling."

Understanding the environmental tolerance limits of key species like Pacific herring is crucial for predicting the impact of climate change on marine ecosystems. This knowledge can inform the development of models that simulate future ocean conditions and their effects on biodiversity and food webs.

06

What This Means for Your Design

Fish babies (embryos) can get too hot too quickly, which is bad for them, but they don't seem to mind slightly more acidic water as much.

How to use in your project

  • 1.Use the findings to justify the parameters and assumptions in a simulation model designed to predict the impact of climate change on a specific ecosystem or species.
  • 2.Incorporate the concept of 'thermal tolerance limits' as a key variable in a simulation or predictive model.
07

Add to My Project

08

Quick Cite

Paragraph starter

This study provides critical data on the environmental tolerance of Pacific herring embryos, revealing a significant vulnerability to acute warming events (survival drastically reduced at 25°C) while demonstrating a lesser impact from ocean acidification. These findings are directly applicable to the development of ecological models, informing the parameters used to simulate species survival under projected climate change scenarios.

09

Source

Frontiers in Marine Science

The combined effects of acidification and acute warming on the embryos of Pacific herring (Clupea pallasii)

journal · 2023

View source

Questions About This Research

What does the research say about environmental stressors impact pacific herring embryo survival?
Design models that simulate the impact of fluctuating temperatures on marine species, incorporating thresholds for acute thermal stress. Evidence: Frontiers in Marine Science (2023).
Why does "Environmental Stressors Impact Pacific Herring Embryo Survival" matter for design?
Understanding the environmental tolerance limits of key species like Pacific herring is crucial for predicting the impact of climate change on marine ecosystems. This knowledge can inform the development of models that simulate future ocean conditions and their effects on biodiversity and food webs.
How can designers apply this research?
Design models that simulate the impact of fluctuating temperatures on marine species, incorporating thresholds for acute thermal stress.
What were the main findings?
Pacific herring embryos can withstand acute exposure to 20°C, but survival is greatly reduced after 2-3 hours at 25°C.. Elevated pCO2 had limited effects on critical thermal maximum (CTmax).. Survival was significantly lower in embryos reared under chronically warm conditions (12-16°C) compared to 10°C.. Oxygen consumption rates increased at elevated temperatures and pCO2 levels.
What research method was used?
Experimental.
How strong is the evidence?
Evidence strength is rated Strong effect, based on a 2023 journal from Frontiers in Marine Science.
What should I do differently in my next project?
Use this data to build predictive models for fish population dynamics under climate change scenarios, focusing on thermal stress events.
What are the limitations?
The study focused on a specific species and geographic location; results may not be generalizable to all marine fish. The duration of acute temperature challenges was limited.