Ant Assemblages in Hemlock Removal Experiment at Harvard Forest since 2003 (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/193/5,
which was derived from the Level 0 data package found here:
https://pasta.lternet.edu/package/metadata/eml/knb-lter-hfr/118/33. The abstract below was extracted from the Level 0 data
package and is included for context: Ants comprise a considerable amount of animal biomass in terrestrial ecosystems and play major roles in ecological processes ranging from seed dispersal to soil turnover. Invasion by the hemlock woolly adelgid will transform late-successional hemlock forests into earlier successional mixed hardwood - white pine forests or red-maple wetlands. Understanding how ant assemblages vary in different habitat types allows for predictions of how hemlock decline could alter the composition of ant assemblages, with implications for a wide range of ecosystem processes. As part of the Hemlock Removal Experiment at the Simes Tract, we annually monitor ant species composition and abundance.

本数据包采用达尔文核心档案（Darwin Core Archive, 简称DwC-A，事件核心）格式。有关达尔文核心（Darwin Core）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提供的一级数据包：https://pasta.lternet.edu/package/metadata/eml/edi/193/5，而该一级数据包又源自此处提供的零级数据包：https://pasta.lternet.edu/package/metadata/eml/knb-lter-hfr/118/33。以下摘取自零级数据包的内容，旨在提供背景信息：
蚂蚁在陆地生态系统中构成相当可观的动物生物量，并在从种子传播到土壤周转等诸多生态过程中发挥关键作用。铁杉球蚜（hemlock woolly adelgid）的入侵将使演替后期的铁杉林转变为演替早期的硬阔-白松混交林或红枫湿地。明确不同生境类型中蚂蚁群落的变化规律，可用于预测铁杉衰退如何改变蚂蚁群落组成，进而对一系列生态过程产生影响。作为赛姆斯地块（Simes Tract）铁杉移除实验（Hemlock Removal Experiment）的一部分，研究团队每年都会对蚂蚁的物种组成与丰度进行监测。