Diel and tidal pCO2 × O2 fluctuations provide physiological refuge to early life stages of a coastal forage fish
| Autor: | Emma L. Cross, Christopher S. Murray, Hannes Baumann |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Aquatic Organisms 010504 meteorology & atmospheric sciences Climate Change lcsh:Medicine Climate change Evolutionary ecology 01 natural sciences Article Nutrient Menidia Animals Ecosystem Seawater 14. Life underwater lcsh:Science Hypoxia Diel vertical migration 0105 earth and related environmental sciences Marine biology Multidisciplinary biology Ecology 010604 marine biology & hydrobiology lcsh:R Climate-change ecology Fishes Hypoxia (environmental) Carbon Dioxide biology.organism_classification Oxygen 13. Climate action Larva Forage fish Environmental science lcsh:Q Cycling circulatory and respiratory physiology |
| Zdroj: | Scientific Reports Scientific Reports, Vol 9, Iss 1, Pp 1-11 (2019) |
| ISSN: | 2045-2322 |
| Popis: | Coastal ecosystems experience substantial natural fluctuations in pCO2 and dissolved oxygen (DO) conditions on diel, tidal, seasonal and interannual timescales. Rising carbon dioxide emissions and anthropogenic nutrient input are expected to increase these pCO2 and DO cycles in severity and duration of acidification and hypoxia. How coastal marine organisms respond to natural pCO2 × DO variability and future climate change remains largely unknown. Here, we assess the impact of static and cycling pCO2 × DO conditions of various magnitudes and frequencies on early life survival and growth of an important coastal forage fish, Menidia menidia. Static low DO conditions severely decreased embryo survival, larval survival, time to 50% hatch, size at hatch and post-larval growth rates. Static elevated pCO2 did not affect most response traits, however, a synergistic negative effect did occur on embryo survival under hypoxic conditions (3.0 mg L−1). Cycling pCO2 × DO, however, reduced these negative effects of static conditions on all response traits with the magnitude of fluctuations influencing the extent of this reduction. This indicates that fluctuations in pCO2 and DO may benefit coastal organisms by providing periodic physiological refuge from stressful conditions, which could promote species adaptability to climate change. |
| Databáze: | OpenAIRE |
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