کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4397424 | 1305886 | 2007 | 11 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Comparing shoot population dynamics methods on Posidonia oceanica meadows Comparing shoot population dynamics methods on Posidonia oceanica meadows](/preview/png/4397424.png)
Prediction capacity of three main shoot population dynamics methods (age structure, net shoot recruitment per plagiotropic rhizome and shoot census) have been tested for a period of four years (2002–2006) on a Posidonia oceanica meadow. Accuracy of each method was checked by comparing measured and predicted densities at the end of the study period. Predicted densities came from the evolution of initial densities (measured in 2002) by a basic exponential model of population growth. The exponential model used the different net shoot recruitment rate estimates by each population dynamics method on three depths (upper, medium and lower limit) and three localities at each depth. Predictions performed by shoot census and net shoot recruitment per plagiotropic rhizome methods matched with measured densities at the end of the study period. Conversely, age structure method underestimated shoot densities at each depth, indicating an unreal decrease of shoot population in the meadow.
Journal: Journal of Experimental Marine Biology and Ecology - Volume 353, Issue 1, 21 December 2007, Pages 115–125