Mortality rate estimation for eelgrass Zostera marina (Potamogetonaceae) using projections from Leslie matrices
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| Formato: | Online |
| Idioma: | eng |
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Universidad de Costa Rica
2008
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| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/5689 |
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RBT56892022-06-06T17:30:40Z Mortality rate estimation for eelgrass Zostera marina (Potamogetonaceae) using projections from Leslie matrices Mortality rate estimation for eelgrass Zostera marina (Potamogetonaceae) using projections from Leslie matrices Flores Uzeta, Olga Solana Arellano, Elena Echeverría Heras, Héctor Modelos de matrices demografía Zostera marina tasa de mortalidad Matrix models demography mortality rates The main goal of this study is to provide estimations of mean mortality rate of vegetative shoots of the seagrass Zostera marina in a meadow near Ensenada Baja California, using a technique that minimizes destructive sampling. Using cohorts and Leslie matrices, three life tables were constructed, each representing a season within the period of monthly sampling (April 1999 to April 2000). Ages for the cohorts were established in terms of Plastochrone Interval (PI). The matrices were projected through time to estimate the mean total number of individuals at time t, n(t) as well as mortality. We found no statistical differences between observed and predicted mean values for these variables (t=-0.11, p=0.92 for n(t) and t=0.69, p=0.5 for mean rate of mortality). We found high correlation coefficient values between observed and projected values for monthly number of individuals (r=0.70, p=0.007) and monthly mortality rates (r=0.81, p=0.001). If at a certain time t a sudden environmental change occurs, and as long as the perturbation does not provoke the killing of all the individuals of a given age i for 0 = i = x - 1, there will be a prevailing number of individuals of age or stage x at a time t+1. This nondestructive technique reduces the number of field visits and samples needed for the demographic analysis of Z. marina, and therefore decreases the disturbance caused by researches to the ecosystem. Universidad de Costa Rica 2008-09-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article Text application/pdf https://revistas.ucr.ac.cr/index.php/rbt/article/view/5689 10.15517/rbt.v56i3.5689 Revista de Biología Tropical; Vol. 56 No. 3 (2008): Volume 56 – Regular number 3 – September 2008; 1015–1022 Revista de Biología Tropical; Vol. 56 Núm. 3 (2008): Volumen 56 – Número regular 3 – Setiembre 2008; 1015–1022 Revista Biología Tropical; Vol. 56 N.º 3 (2008): Volume 56 – Regular number 3 – September 2008; 1015–1022 2215-2075 0034-7744 10.15517/rbt.v56i3 eng https://revistas.ucr.ac.cr/index.php/rbt/article/view/5689/5431 Copyright (c) 2008 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 |
| institution |
Universidad de Costa Rica |
| collection |
Revista de Biología Tropical |
| language |
eng |
| format |
Online |
| author |
Flores Uzeta, Olga Solana Arellano, Elena Echeverría Heras, Héctor |
| spellingShingle |
Flores Uzeta, Olga Solana Arellano, Elena Echeverría Heras, Héctor Mortality rate estimation for eelgrass Zostera marina (Potamogetonaceae) using projections from Leslie matrices |
| author_facet |
Flores Uzeta, Olga Solana Arellano, Elena Echeverría Heras, Héctor |
| author_sort |
Flores Uzeta, Olga |
| title |
Mortality rate estimation for eelgrass Zostera marina (Potamogetonaceae) using projections from Leslie matrices |
| title_short |
Mortality rate estimation for eelgrass Zostera marina (Potamogetonaceae) using projections from Leslie matrices |
| title_full |
Mortality rate estimation for eelgrass Zostera marina (Potamogetonaceae) using projections from Leslie matrices |
| title_fullStr |
Mortality rate estimation for eelgrass Zostera marina (Potamogetonaceae) using projections from Leslie matrices |
| title_full_unstemmed |
Mortality rate estimation for eelgrass Zostera marina (Potamogetonaceae) using projections from Leslie matrices |
| title_sort |
mortality rate estimation for eelgrass zostera marina (potamogetonaceae) using projections from leslie matrices |
| title_alt |
Mortality rate estimation for eelgrass Zostera marina (Potamogetonaceae) using projections from Leslie matrices |
| publisher |
Universidad de Costa Rica |
| publishDate |
2008 |
| url |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/5689 |
| work_keys_str_mv |
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