JA Coombs
Matthew O’Donnell
KH Nislow
Benjamin Letcher
AR Whiteley
2016
<p><span>For organisms with overlapping generations that occur in metapopulations, uncertainty remains regarding the spatiotemporal scale of inference of estimates of the effective number of breeders (</span><img class="section_image" src="https://onlinelibrary.wiley.com/cms/asset/f0c18c6b-1ba2-42bd-99b7-3cd79e649c2b/eva12454-math-0001.png" alt="urn:x-wiley:17524571:media:eva12454:eva12454-math-0001" data-mce-src="https://onlinelibrary.wiley.com/cms/asset/f0c18c6b-1ba2-42bd-99b7-3cd79e649c2b/eva12454-math-0001.png"><span>) and whether these estimates can be used to predict generational </span><i>N</i><sub>e</sub><span>. We conducted a series of tests of the spatiotemporal scale of inference of estimates of </span><i>N</i><sub>b</sub><span> in nine consecutive cohorts within a long‐term study of brook trout (</span><i>Salvelinus fontinalis</i><span>). We also tested a recently developed approach to estimate generational </span><i>N</i><sub>e</sub><span> from </span><img class="section_image" src="https://onlinelibrary.wiley.com/cms/asset/f082f208-7cc9-41d1-93f3-0b96eeba9915/eva12454-math-0002.png" alt="urn:x-wiley:17524571:media:eva12454:eva12454-math-0002" data-mce-src="https://onlinelibrary.wiley.com/cms/asset/f082f208-7cc9-41d1-93f3-0b96eeba9915/eva12454-math-0002.png"><span> and compared this to an alternative approach for estimating </span><img class="section_image" src="https://onlinelibrary.wiley.com/cms/asset/3c79185e-2dd4-484c-814f-2dffa7d9d5d9/eva12454-math-0003.png" alt="urn:x-wiley:17524571:media:eva12454:eva12454-math-0003" data-mce-src="https://onlinelibrary.wiley.com/cms/asset/3c79185e-2dd4-484c-814f-2dffa7d9d5d9/eva12454-math-0003.png"><span> that also accounts for age structure. Multiple lines of evidence were consistent with </span><img class="section_image" src="https://onlinelibrary.wiley.com/cms/asset/e05fad7a-6682-4312-b90b-be93cb994df8/eva12454-math-0004.png" alt="urn:x-wiley:17524571:media:eva12454:eva12454-math-0004" data-mce-src="https://onlinelibrary.wiley.com/cms/asset/e05fad7a-6682-4312-b90b-be93cb994df8/eva12454-math-0004.png"><span> corresponding to the local (subpopulation) spatial scale and the cohort‐specific temporal scale. We found that at least four consecutive cohort‐specific estimates of </span><img class="section_image" src="https://onlinelibrary.wiley.com/cms/asset/60f883bb-2b37-42d7-a355-0d4bca883911/eva12454-math-0005.png" alt="urn:x-wiley:17524571:media:eva12454:eva12454-math-0005" data-mce-src="https://onlinelibrary.wiley.com/cms/asset/60f883bb-2b37-42d7-a355-0d4bca883911/eva12454-math-0005.png"><span> were necessary to obtain reliable estimates of harmonic mean </span><img class="section_image" src="https://onlinelibrary.wiley.com/cms/asset/317b6dd2-8eea-489b-8861-a2a46960fe7f/eva12454-math-0006.png" alt="urn:x-wiley:17524571:media:eva12454:eva12454-math-0006" data-mce-src="https://onlinelibrary.wiley.com/cms/asset/317b6dd2-8eea-489b-8861-a2a46960fe7f/eva12454-math-0006.png"><span> for a subpopulation. Generational </span><img class="section_image" src="https://onlinelibrary.wiley.com/cms/asset/cea25c00-6fe7-43d6-a077-fdd6b26efc88/eva12454-math-0007.png" alt="urn:x-wiley:17524571:media:eva12454:eva12454-math-0007" data-mce-src="https://onlinelibrary.wiley.com/cms/asset/cea25c00-6fe7-43d6-a077-fdd6b26efc88/eva12454-math-0007.png"><span> derived from cohort‐specific </span><img class="section_image" src="https://onlinelibrary.wiley.com/cms/asset/92d0e3d9-675e-436f-b90f-932d0ba4f29e/eva12454-math-0008.png" alt="urn:x-wiley:17524571:media:eva12454:eva12454-math-0008" data-mce-src="https://onlinelibrary.wiley.com/cms/asset/92d0e3d9-675e-436f-b90f-932d0ba4f29e/eva12454-math-0008.png"><span> was within 7%–50% of an alternative approach to obtain </span><img class="section_image" src="https://onlinelibrary.wiley.com/cms/asset/cb5afcb9-c197-4eb4-9e45-2867ef4ea54a/eva12454-math-0009.png" alt="urn:x-wiley:17524571:media:eva12454:eva12454-math-0009" data-mce-src="https://onlinelibrary.wiley.com/cms/asset/cb5afcb9-c197-4eb4-9e45-2867ef4ea54a/eva12454-math-0009.png"><span>, suggesting some population specificity for concordance between approaches. Our results regarding the spatiotemporal scale of inference for </span><i>N</i><sub>b</sub><span> should apply broadly to many taxa that exhibit overlapping generations and metapopulation structure and point to promising avenues for using cohort‐specific </span><img class="section_image" src="https://onlinelibrary.wiley.com/cms/asset/a875c5a8-c303-45de-8f47-84fde3eceabd/eva12454-math-0010.png" alt="urn:x-wiley:17524571:media:eva12454:eva12454-math-0010" data-mce-src="https://onlinelibrary.wiley.com/cms/asset/a875c5a8-c303-45de-8f47-84fde3eceabd/eva12454-math-0010.png"><span> for local‐scale genetic monitoring.</span></p>
application/pdf
10.1111/eva.12454
en
Wiley
Keeping things local: Subpopulation Nb and Ne in a stream network with partial barriers to fish migration
article