SBC LTER: Reef: Seasonal Kelp Forest Community Dynamics: Cover of bottom substrate and sand depth

These data describe the percent cover of eight bottom substrate
types within permanent plots of SBCLTER's seasonal kelp forest
monitoring program to track long-term patterns in species
abundance and diversity. The type of bottom substrate was recorded
at 80 uniformly spaced points along permanent 40m x 2m transects.
Percent cover of each substrate type on transect was estimated as
the proportion of the 80 points contacted by the substrate type x
100. In cases where the substrate type was sand, the depth of the
sand was measured. The experiment was initiated in 2008 at five
reef sites along the mainland coast of the Santa Barbara Channel. The two tables in this data package include: 1) The percent cover
of eight bottom substrate types; and 2) the sand depth of each
sampling point (sand depth = 0 if substrate type is not sand)

本数据集记录了SBCLTER季节性海带林监测项目永久样地内8种海底底质类型的盖度，用于追踪物种丰度与多样性的长期动态模式。研究沿永久设置的40米×2米样带，在80个均匀分布的采样点记录底质类型；样带内各底质类型的盖度通过「被该底质覆盖的采样点占总采样点（80个）的比例×100」计算得到。当底质类型为沙质时，同步测量沙层厚度。本监测项目于2008年在圣巴巴拉海峡大陆沿岸的5个礁体站点启动。

本数据包内含两张数据表：1）8种海底底质类型的盖度；2）各采样点的沙层厚度（若非沙质底质，则沙层厚度记为0）