SBC LTER: Reef: Kelp Forest Community Dynamics: Fish abundance (Reformatted to the ecocomDP Design Pattern)

This data package is formatted as an ecocomDP (Ecological Community
Data Pattern). For more information on ecocomDP see
https://github.com/EDIorg/ecocomDP. This Level 1 data package was
derived from the Level 0 data package found here: https://pasta.lternet.edu/package/metadata/eml/knb-lter-sbc/17/35. The
abstract below was extracted from the Level 0 data package and is
included for context: These data describe the abundance and size of fish species as part
of SBCLTER's kelp forest monitoring program to track long-term
patterns in species abundance and diversity. This study began in
2000 in the Santa Barbara Channel, California, USA. The abundance
and size of all taxa of resident kelp forest fish encountered along
permanent transects are recorded at nine reef sites located along
the mainland coast of the Santa Barbara Channel and at two sites on
the north side of Santa Cruz Island. These sites reflect several
oceanographic regimes in the channel and vary in distance from
sources of terrestrial runoff. In these surveys, fish were counted
in either a 40x2m benthic quadrat, or in the water parcel 0-2m off
the bottom over the same area. The two tables in this data package include: 1) The annual benthic
fish community survey which was conducted on 11 reefs once a year
around late July or early August; and 2) The monthly fish survey
which was conducted once a month at a subset of the sites (3 of the
annual sites) The time period of data collection for the annual benthic fish
community survey varied among the 11 kelp forest sites. Sampling at
BULL, CARP, and NAPL began in 2000, sampling at the other 6 mainland
sites (AHND, AQUE, IVEE, GOLB, ABUR, MOHK) began in 2001 (transects
3, 5, 6, 7, 8 at IVEE were added in 2011). Data collection at the
two Santa Cruz Island sites (SCTW and SCDI) began in 2004. The
monthly fish survey at ABUR (Transect 1, 2, and 3), AQUE
(Transect1), and MOHK (Transect 1) in 2002. The Transect 2 and 3 at
ABUR were discontinued in June 2006. See Methods for more information.   The primary research objective of the Santa Barbara Coastal LTER is to investigate
the importance of land and ocean processes in structuring giant kelp
(Macrocystis pyrifera ) forest ecosystems. As in many temperate
regions, the shallow rocky reefs in the Santa Barbara Channel, California, are dominated
by giant kelp forests. Because of their close proximity to shore, kelp forests are
influenced by physical and biological processes occurring on land as well as in the open
ocean. SBC LTER research focuses on measuring and modeling the patterns, transport, and
processing of material constituents (e.g., nutrients, carbon, sediment, organisms, and
pollutants) from terrestrial watersheds and the coastal ocean to these reefs.
Specifically, we are examining the effects of these material inputs on the primary
production of kelp, and the population dynamics, community structure, and trophic
interactions of kelp forest ecosystems.

本数据包采用ecocomDP（Ecological Community Data Pattern，生态群落数据模式）格式构建。有关ecocomDP的详细信息，请访问https://github.com/EDIorg/ecocomDP。本一级数据包源自对应的零级数据包，其元数据地址为https://pasta.lternet.edu/package/metadata/eml/knb-lter-sbc/17/35。以下摘要提取自零级数据包，用于提供背景信息：

本数据集记录了鱼类物种的丰度与体型尺寸，作为圣巴巴拉海岸长期生态研究（SBCLTER）海带森林监测项目的组成部分，用于追踪物种丰度与多样性的长期变化格局。本研究于2000年在美国加利福尼亚州圣巴巴拉海峡启动。在圣巴巴拉海峡大陆沿岸的9个礁体站点，以及圣克鲁斯岛北侧的2个站点，研究人员沿永久样带记录了所有沿样带观测到的定居性海带森林鱼类类群的丰度与体型尺寸。这些站点涵盖了海峡内的多种海洋动力环境，且与陆地径流源的距离各不相同。本次调查中，鱼类计数在两种采样单元中开展：一是40×2米的底栖样方，二是覆盖相同区域、距底床0-2米的水层。

本数据包包含两张数据表：
1) 年度底栖鱼类群落调查数据：每年7月末至8月初对11个礁体开展一次采样；
2) 月度鱼类调查数据：在部分年度采样站点（共3个）每月开展一次采样。

年度底栖鱼类群落调查的采样时段因11个海带森林站点而异。其中BULL、CARP及NAPL站点的采样始于2000年；其余6个大陆沿岸站点（AHND、AQUE、IVEE、GOLB、ABUR、MOHK）的采样始于2001年（IVEE站点的3、5、6、7、8号样带于2011年新增）。圣克鲁斯岛的两个站点（SCTW与SCDI）的采样始于2004年。ABUR站点的1、2、3号样带、AQUE站点的1号样带及MOHK站点的1号样带的月度采样始于2002年。ABUR站点的2、3号样带于2006年6月停止采样。更多详细信息请参见研究方法。

圣巴巴拉海岸长期生态研究（SBC LTER）的核心研究目标为探究陆地与海洋过程在塑造巨藻（Macrocystis pyrifera）森林生态系统中的作用。与诸多温带区域类似，加利福尼亚州圣巴巴拉海峡的浅海岩礁以巨藻森林为主要生态系统类型。由于毗邻海岸，海带森林同时受陆地与开阔海洋中的物理、生物过程影响。SBC LTER的研究聚焦于量化并模拟从陆地流域与近岸海洋向这些礁体输送的物质组分（如营养盐、碳、沉积物、生物及污染物）的格局、迁移与转化过程。具体而言，本研究旨在考察这些物质输入对巨藻初级生产力，以及海带森林生态系统的种群动态、群落结构与营养级相互作用的影响。