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University of Texas Rio Grande Valley

Biology Faculty Publications and Presentations

2001

Texas

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Full-Text Articles in Life Sciences

Productivity Estimation In Halodule Wrightii: Comparison Of Leaf-Clipping And Leaf-Marking Techniques, And The Importance Of Clip Height, Joseph L. Kowalski, Hudson R. Deyoe, Terry C. Allison, James E. Kaldy Jan 2001

Productivity Estimation In Halodule Wrightii: Comparison Of Leaf-Clipping And Leaf-Marking Techniques, And The Importance Of Clip Height, Joseph L. Kowalski, Hudson R. Deyoe, Terry C. Allison, James E. Kaldy

Biology Faculty Publications and Presentations

We compared estimates of Halodule wrightii leaf growth rates obtained from leaf-clipping and leaf-piercing methods in a south Texas lagoon. Leaf clipping underestimated leaf production from 15 to 37% in winter and 25 to 60% in summer relative to leaf piercing. The underestimation of leaf-clipping derived growth rates were corrected using a linear regression between leaf growth rates determined by leaf-clipping and leaf-piercing methods. To examine the effect of clip height on H. wrightii leaf growth rate estimation, leaves were clipped at 0, 2, 4, 6, and 8 cm above the sediment. Leaves clipped at 2 cm exhibited the fastest …