Biomass and Plant Species Composition on Hog and Metompkin Islands, 2020-2022

Beginning in 2020, annual plant surveys were conducted along 3 cross-shore transects on Hog and Metompkin Islands along the Atlantic coast of Virginia. Transects were established starting at the high water mark, and continuing inland until reaching a shrub thicket. Plots were placed 10m apart in beach and swale habitats, and 5m apart across dunes. At each plot, percent composition was measured within a 0.25m^2 quadrat. Aboveground biomass was also obtained within a randomly placed 10x100cm^2 quadrat. Biomass was then dried and weighed. Due to logistical constraints, biomass was not collected in 2022.2020年起，研究团队在弗吉尼亚州大西洋沿岸的霍格岛（Hog Island）与梅托姆普金岛（Metompkin Islands）上，沿3条跨岸样带（cross-shore transect）开展年度植物调查。所有样带均以高潮线（high water mark）为起点，向内陆延伸直至灌丛带（shrub thicket）。在海滩及沙丘洼地（swale）生境中，采样点间距设置为10米；沙丘区域的采样点间距则为5米。于每个采样点内，以0.25平方米的样方（quadrat）测定物种组成盖度百分比。同时在随机布设的10厘米×100厘米样方内采集地上生物量（aboveground biomass）样品，后续对其进行烘干称重。受后勤保障条件限制，2022年未开展生物量采集工作。