Authors: Simone Vincenzi Giulio A De Leo Cristina Munari Michele Mistri
Publish Date: 2013/11/15
Volume: 724, Issue: 1, Pages: 267-277
Abstract
We show how a simple species distribution model can be used for the rapid estimation of potential yield and for the identification of suitable sites for farming of Tapes philippinarum in two North Adriatic lagoons Caleri and MarinettaVallona Italy in the face of limited data We used a twopart species distribution model with sediment type hydrodynamism dissolved oxygen and salinity as predictors of T philippinarum potential yield The first model component uses logistic regression to identify the areas in which clams occur while the second component uses a weighted geometric mean of suitability values to estimate the potential annual yield kg m−2 year−1 for the sites where T philippinarum is predicted to be present We used sitespecific yield data from Caleri and MarinettaVallona to estimate the weights of the geometric mean by constrained linear regression We validated the twopart model on an independent set of yield data R adj 2 = 082 and we then estimated the spatial distribution of potential yield in the two lagoons The calibration and application of a simple species distribution model are useful tools for objectively identifying the most suitable sites for farming of T philippinarum in North Adriatic lagoons
Keywords: