Mussel-derived stimulation of benthic filamentous algae: The importance of nutrients and spatial scale

Francoeur, Steven N.; Peters Winslow, Kimberly A.; Miller, Dianna; Peacor, Scott D.

doi:10.1016/j.jglr.2016.10.013

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Mussel-derived stimulation of benthic filamentous algae: The importance of nutrients and spatial scale

2017
By Francoeur, Steven N. ; Peters Winslow, Kimberly A. ; Miller, Dianna ; ...
Source: Journal of Great Lakes Research, 43(1), 69-79

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Journal Title:

Journal of Great Lakes Research
Personal Author:

Francoeur, Steven N. ; Peters Winslow, Kimberly A. ; Miller, Dianna ; Peacor, Scott D.

Francoeur, Steven N. ; Peters Winslow, Kimberly A. ; Miller, Dianna ; Peacor, Scott D. Less -
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The reoccurrence of benthic filamentous algal (FA) blooms in the Great Lakes, without associated increases in phosphorus loading, has stimulated renewed interest in determining the causes of Great Lakes benthic algal blooms. We investigated the potential roles of invasive mussels and nutrient limitation with experimental substrata within inner Saginaw Bay. FA abundance on live mussel substrata was typically significantly greater than that on inert (empty shell or rock) substrata. Nutrient addition (from an artificial source) significantly increased FA abundance on inert substrata. These results suggest that: 1) mussel nutrient excretion could be a primary stimulatory mechanism; 2) mussel-mediated stimulation may be even stronger in other, more oligotrophic, Great Lakes nearshore zones; and 3) increased nutrient loading to inner Saginaw Bay may exacerbate existing FA blooms. FA abundance on inert substrata was not affected, even in close proximity to mussels, indicating that the observed stimulatory effect of mussel-derived P on live mussels attenuated at very small spatial scales, on the order of centimeters or less.
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Aquatic Science Ecology Ecology, Evolution, Behavior And Systematics
Source:

Journal of Great Lakes Research, 43(1), 69-79
DOI:

https://doi.org/10.1016/j.jglr.2016.10.013
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0380-1330
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Elsevier BV
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Journal Article
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urn:sha256:37e3c2fddb1169c5eeba6edba80d42181779874a339439c46e0f8d45ff5c7ac0
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Mussel-derived stimulation of benthic filamentous algae: The importance of nutrients and spatial scale

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