Ecological Archives E096-124-A6

Maya C. Pfaff, George M. Branch, Jennifer L. Fisher, Vera Hoffmann, Allan G. Ellis, and John L. Largier . 2015. Delivery of marine larvae to shore requires multiple sequential transport mechanisms. Ecology 96:13991410. http://dx.doi.org/10.1890/14-0229.1

Appendix F. Correlations between intertidal settlement and settlement on nearshore moorings, showing a coupling of larval supply and settlement at Elands Bay, but not at Cape Columbine.

Correlations between (de-meaned) timeseries of nearshore settlement rates at various distances from shore and intertidal settlement rates (including 2-day lags) confirm coupling of larval supply and settlement of mussels and barnacles at Elands Bay (as shown by Hoffmann et al 2012), but not at Cape Columbine.

Table F. Temporal cross-correlations between nearshore settlement rates and intertidal settlement of mussels and barnacles at Elands Bay and Cape Columbine, including 2-day lags. Significant results (P < 0.05) are shown in bold font.

Site

Taxon

Settlement (x)

Settlement (y)

lag (d)

Kendal's τ

P

 

 

 

 

 

 

 

Elands Bay

mussels

intertidal

200 m

0

0.8857

0.0000

Elands Bay

mussels

intertidal

700 m

0

0.6667

0.0001

Elands Bay

mussels

intertidal

1400 m

0

0.6333

0.0003

Elands Bay

mussels

intertidal

200 m

2

0.7143

0.0001

Elands Bay

mussels

intertidal

700 m

2

0.7524

0.0000

Elands Bay

mussels

intertidal

1400 m

2

0.6381

0.0005

 

 

 

 

 

 

 

Elands Bay

barnacles

intertidal

200 m

0

0.1471

0.4838

Elands Bay

barnacles

intertidal

700 m

0

0.5748

0.0056

Elands Bay

barnacles

intertidal

1400 m

0

0.4656

0.0221

Elands Bay

barnacles

intertidal

200 m

2

0.2012

0.3494

Elands Bay

barnacles

intertidal

700 m

2

0.4719

0.0310

Elands Bay

barnacles

intertidal

1400 m

2

0.4964

0.0197

 

 

 

 

 

 

 

Columbine

mussels

intertidal

700 m

0

0.0383

0.8818

Columbine

mussels

intertidal

1400 m

0

-0.0095

1.0000

Columbine

mussels

intertidal

700 m

2

-0.0663

0.7840

Columbine

mussels

intertidal

1400 m

2

-0.0549

0.8299

 

 

 

 

 

 

 

Columbine

barnacles

intertidal

700 m

0

0.1026

0.7213

Columbine

barnacles

intertidal

1400 m

0

-0.0757

0.8172

Columbine

barnacles

intertidal

700 m

2

0.3927

0.1300

Columbine

barnacles

intertidal

1400 m

2

-0.0620

0.8705

 

 

 

 

 

 

 

Literature cited

Hoffmann, V., M. Pfaff, and G. Branch. 2012. Spatio-temporal patterns of larval supply and settlement of intertidal invertebrates reflect a combination of passive transport and larval behavior. Journal of Experimental Marine Biology and Ecology 418–419:83–90.


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