SBC LTER: Reef: Annual time series of biomass for kelp forest species, ongoing since 2000 (Reformatted to a Darwin Core Archive)

This data package is formatted as a Darwin Core Archive (DwC-A,
event core). For more information on Darwin Core see
https://www.tdwg.org/standards/dwc/. This Level 2 data package was
derived from the Level 1 data package found here: https://pasta.lternet.edu/package/metadata/eml/edi/281/3,
which was derived from the Level 0 data package found here:
https://pasta.lternet.edu/package/metadata/eml/knb-lter-sbc/50/10. The abstract below was extracted from the Level 0
data package and is included for context: These data are annual estimates of biomass of approximately 225 taxa
of reef algae, invertebrates and fish in permanent transects at 11
kelp forest sites in the Santa Barbara Channel (2-8 transects per
site). Abundance is measured annually (as percent cover or density,
by size) and converted to biomass (i.e., wet mass, dry mass,
decalcified dry mass, ash free dry mass) using published
taxon-specific algorithms. Data collection began in summer 2000 and
continues annually in summer to provide information on community
structure, population dynamics and species change. The time period of data collection 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. See Methods for more information.   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.

本数据包采用达尔文核心档案（Darwin Core Archive, DwC-A，事件核心）格式。有关达尔文核心标准的详细信息，请参阅：https://www.tdwg.org/standards/dwc/。

本二级数据包源自此处的一级数据包：https://pasta.lternet.edu/package/metadata/eml/edi/281/3，而该一级数据包又衍生自此处的零级数据包：https://pasta.lternet.edu/package/metadata/eml/knb-lter-sbc/50/10。

以下摘要提取自该零级数据包，用于提供背景信息：
本数据集为圣巴巴拉海峡11个海带林站点永久样带中约225个礁藻、无脊椎动物与鱼类类群的年生物量估算值，每个站点设置2至8条样带。丰度通过年度调查获取（以盖度或按体型分级的密度计），并依据已发表的类群特异性算法转换为生物量（包括鲜重、干重、脱钙干重及灰分干重）。数据采集始于2000年夏季，此后每年夏季持续开展，旨在为群落结构、种群动态及物种变化研究提供支撑数据。

11个海带林站点的数据采集起始时间存在差异。其中BULL、CARP与NAPL站点的采样工作始于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站点的第3、5、6、7、8条样带于2011年新增）。圣克鲁斯岛的两个站点（SCTW与SCDI）的采样始于2004年。更多详细信息请参阅《方法》章节。

圣巴巴拉海岸长期生态研究（Santa Barbara Coastal Long-Term Ecological Research, 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*）森林生态系统中的重要性。与众多温带区域一致，加利福尼亚州圣巴巴拉海峡的浅海岩礁以巨藻林为优势群落。由于这些巨藻林紧邻岸线，其同时受陆地与开阔海洋中的物理及生物过程影响。SBC LTER的研究聚焦于测量与模拟陆地流域及近岸海洋向这些岩礁输送的物质组分（如营养盐、碳、沉积物、生物及污染物）的分布、运移与转化过程。具体而言，本研究旨在探究这些物质输入对巨藻初级生产力，以及巨藻森林生态系统的种群动态、群落结构与营养级互作产生的影响。