<div><p>Results from the field assay identified larger <em>Thalassoma quinquevittatum</em> as strongly competing with focal <em>T. hardwicke</em>. A factorial experiment was used to evaluate the effect of competition with larger <em>T. quinquevittatum</em> and the provisioning of structural refuge on the survival of transplanted <em>T.</em> <em>hardwicke</em>. Structural refuge was increased by adding <em>Turbinaria ornata</em> (a structurally complex, locally common, macroalga) to reefs. Twenty reefs were haphazardly selected, with an average surface area of 5.46 m2 (SE = 0.36), a mean height of 0.79 m (SE = 0.03) and isolated from their nearest neighbour by 3.02 m (SE = 0.19). All reefs initially had three to five (mean = 3.38; SE = 0.16) resident <em>Thalassoma quinquevittatum</em> (22.1 mm SL, SE = 0.56) and lacked <em>Turbinaria ornata</em>. The presence/absence of <em>T. ornata</em> was cross-factored with the presence/absence of <em>T</em>. <em>quinquevittatum</em> and treatments were randomly assigned to reefs. On reefs assigned to the presence of <em>T. quinquevittatum</em>, selective removals were conducted so that each reef had three, similarly sized, T. quinquevittatum individuals that were larger than focal <em>T. hardwicke</em> individuals. For <em>T. ornata </em>present treatments, whole <em>T. ornata</em> plants were attached to recipient reefs with cable ties, so that ~15% of habitat cover was <em>T. ornata</em>. Before the experiment, all resident T. hardwicke were removed from the reefs. Three <em>Thalassoma hardwicke</em> individuals (13.69 mm SL, SE = 0.51: collected and tagged as per the field assay) were transplanted onto each reef and their survival surveyed daily (~ 9 a.m.) for five days. Each morning, immigrant <em>T. quinquevittatum</em> (three immigrants were observed) and new <em>T. hardwicke</em> that had settled the previous night (a total of eight settlers) were removed. Neighboring non-experimental reefs were also searched for tagged <em>T. hardwicke</em> immigrants. No tagged immigrants were found; therefore, the disappearance of a tagged fish was assumed due to mortality rather than migration (as for the field assay). Using the same reefs, the experiment was run in two temporal blocks (beginning12 June 2005 and 12 May 2007), yielding ten replicates (five in each temporal block) for each of the four treatments. The mean proportion of <em>T. hardwicke</em> remaining in each treatment on the last day of the experiment was used as the response variable because by the end of each experimental run survival trajectories had stabilized.</p></div>
This dataset specially refers to the field experiment used to test how competition with larger residents and structural refuge interact to influence survival of transplanted T. hardwicke.
<div><p>This dataset is from a study examining the influence of structural refuge, competition and their interaction on the early post-settlement survival of transplanted <em>Thalassoma hardwicke </em>(the sixbar wrasse).</p>
<p>This dataset specifically refers to the field experiment used to test how competition with larger residents and structural refuge interact to influence survival of transplanted <em>T. hardwicke</em>. Please see Related Datasets below for additional data associated with this project.</p></div>
Geange_2010 Larger Heterospecifics Factorial Experiment
<div><p><strong>Processing notes from the researcher:</strong></p>
<p>This is raw data.</p>
<p><strong>BCO-DMO Processing:</strong></p>
<ul><li>added conventional header with dataset name, PI name, version date</li>
<li>modified parameter names to conform with BCO-DMO naming conventions</li>
</ul></div>
726353
Geange_2010 Larger Heterospecifics Factorial Experiment
2018-02-08T14:15:25-05:00
2018-02-08T14:15:25-05:00
2023-07-07T16:10:26-04:00
urn:bcodmo:dataset:726353
The influence of structural refuge, competition and their interaction on the early post-settlement survival of transplanted Thalassoma hardwicke (the sixbar wrasse) in Moorea, French Polynesia from 2005-2007 (CDD_in_Reef_Fish project)
The influence of structural refuge, competition and their interaction on the early post-settlement survival of transplanted Thalassoma hardwicke (the sixbar wrasse) in Moorea, French Polynesia from 2005-2007. This data was collected as a part of the Cryptic density dependence: the effects of spatial, ontogenetic, and individual variation in reef fish project.
false
Geange, S. (2021) The influence of structural refuge, competition and their interaction on the early post-settlement survival of transplanted Thalassoma hardwicke (the sixbar wrasse) in Moorea, French Polynesia from 2005-2007 (CDD_in_Reef_Fish project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2017-10-05 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.726353.1 [access date]
true
1
10.26008/1912/bco-dmo.726353.1
false
2017-10-05
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