Reconciling slow linear growth and equivocal competitive ability with rapid spread of peyssonnelid algae in the Caribbean
Reconciling slow linear growth and equivocal competitive ability with rapid spread of peyssonnelid algae in the Caribbean
复制标题
协调缓慢的线性增长和模棱两可的竞争能力与加勒比海佩索内利德藻类的快速传播
DOI:
10.1007/s00338-021-02052-7
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发表时间:
2021
期刊:
影响因子:
3.5
通讯作者:
Edmunds, Peter J.
中科院分区:
文献类型:
--
作者:
Williams, Megan K.;Edmunds, Peter J.
Within the past decade, a functional group of encrusting red macroalgae defined as peyssonnelid algal crusts (PAC) has been rapidly spreading on shallow Caribbean reefs, frequently encrusting corals and sponges. This study focused on PAC growing on the reefs of St. John, US Virgin Islands, to (1) expand the monitoring of PAC abundance in this location, and (2) test two mechanisms, rapid linear growth and competitive dominance, by which PAC is hypothesized to enhance its capacity to spread. In August 2019, we found that the percentage coverage of PAC reached 46.6% at Tektite (3 m depth), and 63.8% at Cabritte Horn (3 m depth). Overall, the cover of PAC at these sites in 2019 was identical to, or up to 2.4-fold higher than in August 2017, and 2.1–3.7-fold higher than in November 2017, just after two category 5 storms impacted St. John. PAC was 1.8–29.1-fold more abundant at 3 m versus 9 m depth, and 1.4–22.0-fold more abundant at sites close to the tips of headlands than sites sheltered within bays. From August 2019 to January 2020, the rate of linear extension of PAC at each site and depth ranged from 26 to 43 µm d− 1, and of 80 PAC-coral interactions that were tagged in August 2019, none involved corals that had become completely overgrown by PAC by January 2020. The slow linear growth and absence of cases in which PAC completely overgrew coral colonies in 6 months are inconsistent with the high rate at which PAC has occupied space on Caribbean reefs over the past decade. One means to reconcile these observations is the possibility that recruitment of peyssonnelid spores to benthic surfaces facilitates the rapid spread of PAC.
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DOI:
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发表时间:
1980
期刊:
影响因子:
--
作者:
C. Amsler;R. B. Searles
通讯作者:
R. B. Searles
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
E. Treml;P. Halpin;M. Colgan
通讯作者:
M. Colgan
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作者:
BAK, RPM;ENGEL, MS
通讯作者:
ENGEL, MS
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
A. Skutch
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A. Skutch
影响因子:
3.4
作者:
R. Steneck;M. Dethier
通讯作者:
R. Steneck;M. Dethier