Growth and age across range extension region of Centrostephanus rodgersii in eastern Tasmania and morphometric comparison of urchins inhabiting kelp versus barrens habitats, Australia (2004-2005)

The barrens-forming sea urchin Centrostephanus rodgersii has undergone poleward range extension to eastern Tasmania. This data compares growth, morphology, reproductive investment and gonad indices between individuals inhabiting barrens ('barrens-maintaining' urchins') with those found on kelp beds ('barrens-forming' urchins) in north eastern Tasmania.

形成海胆荒漠（barrens）的罗氏长棘海胆（Centrostephanus rodgersii）已向极地扩张其分布范围至塔斯马尼亚东部海域。本数据集对比了塔斯马尼亚东北部海域中两类海胆的生长情况、形态特征、繁殖投入（reproductive investment）及生殖腺指数（gonad indices）：一类为栖息于海胆荒漠的‘维持海胆荒漠型’海胆，另一类为栖息于海藻床（kelp beds）的‘形成海胆荒漠型’海胆。