Comparing 1-D sediment transport modeling with field observations: Simkins Dam removal case study

Cui, Yantao; Collins, Mathias J.; Andrews, Mary; Boardman, Graham C.; Wooster, John K.; Melchior, Marty; McClain, Serena

doi:10.1080/15715124.2018.1508024

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Comparing 1-D sediment transport modeling with field observations: Simkins Dam removal case study

2019
By Cui, Yantao ; Collins, Mathias J. ; Andrews, Mary ; ...
Source: International Journal of River Basin Management, 17(2), 185-197.

[PDF-3.36 MB]

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Journal Title:

International Journal of River Basin Management
Personal Author:

Cui, Yantao ; Collins, Mathias J. ; Andrews, Mary ; Boardman, Graham C. ; Wooster, John K. ; ... More +

Cui, Yantao ; Collins, Mathias J. ; Andrews, Mary ; Boardman, Graham C. ; Wooster, John K. ; Melchior, Marty ; McClain, Serena Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; OHC (Office of Habitat Conservation) ; WCR (West Coast Region)

NMFS (National Marine Fisheries Service) ; OHC (Office of Habitat Conservation) ; WCR (West Coast Region) Less -
Description:

The effects of multiple stressors on the early life stages of reef-building corals are poorly understood. Elevated temperature is the main physiological driver of mass coral bleaching events, but increasing evidence suggests that other stressors, including elevated dissolved inorganic nitrogen (DIN), may exacerbate the negative effects of thermal stress. To test this hypothesis, we investigated the performance of larvae of Orbicella faveolata and Porites astreoides, two important Caribbean reef coral species with contrasting reproductive and algal transmission modes, under increased temperature and/or elevated DIN. We used a fluorescence-based microplate respirometer to measure the oxygen consumption of coral larvae from both species, and also assessed the effects of these stressors on P. astreoides larval settlement and mortality. Overall, we found that (1) larvae increased their respiration in response to different factors (O. faveolata in response to elevated temperature and P. astreoides in response to elevated nitrate) and (2) P. astreoides larvae showed a significant increase in settlement as a result of elevated nitrate, but higher mortality under elevated temperature. This study shows how microplate respirometry can be successfully used to assess changes in respiration of coral larvae, and our findings suggest that the effects of thermal stress and nitrate enrichment in coral larvae may be species specific and are neither additive nor synergistic for O. faveolata or P. astreoides. These findings may have important consequences for the recruitment and community reassembly of corals to nutrient-polluted reefs that have been impacted by climate change.
Source:

International Journal of River Basin Management, 17(2), 185-197.
DOI:

https://doi.org/10.1080/15715124.2018.1508024
Document Type:

Journal Article
Funding:

Grant no. NA13NMF4630127
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Accepted Manuscript
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Submitted
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urn:sha256:b36b6ebc79d3a3d4274de52b94dd1ea92378315830e20453bdfd9d1f0e8b2475
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Comparing 1-D sediment transport modeling with field observations: Simkins Dam removal case study

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