Effects of Listriolobus pelodes (Echiura) on coastal shelf benthic communities and sediments modified by a major California wastewater discharge

Ephemeral Occurrence of the Echiuran <i>Listriolobus brevirostris</i> (Annelida: Echiura) in Osaka Bay between 1995 and 2002; a New Record for Japan, Probably Resulting from Human-mediated Introduction

“…Thus, it may be concluded that L. brevirostris has been uncollected after August 2002 from that area. Such a decline was also reported by Stull et al (1986) for an indigenous population of a congener, L. pelodes Fisher, 1946, off California, U. S. A., around 60 m deep, after flourishing between 1972and 1977, although the cause was unknown. In contrast, Zhang et al (2017) reported the occurrence of L. brevirostris almost every year between 2004 and 2015 (excepting 2006 and 2007) in Daya Bay, Guangdong, China, based on the results of summer trawling surveys, and supplemented by others in spring and autumn.…”

Gauging benthic recovery from 20th century pollution on the southern California continental shelf using bivalves from sediment cores

“…Bivalves played a large role in these macrobenthic changes (e.g. Stull et al 1986, Swartz et al 1986 and are key components of an abundanceweighted regional 'benthic response index ' (Smith et al 2001). Of the 477 infaunal taxa that Smith et al (2001) ordinated against sediment chemistry, the chemosymbiont-bearing lucinid Par vilucina tenuisculpta and mixed-(facultative deposit) feeding tellinid Macoma carlottensis anchor the polluted extreme, and bivalves also help anchor the 'reference condition' extreme, especially suspension-feeders such as the cardiid Nemocardium centifilosum.…”

“…The zone with the highest contaminant concentrations expanded bathymetrically from 15−45 m in the early 1950s when the 34 m outfall operated (Bandy et al 1964) to ~50−100 m with the 1956 opening of the new discharge pipe at ~60 m depth and closure of the original 34 m outfall in 1958 (Lee et al 2002). H 2 S-rich sediments still existed on the middle shelf by the early 1970s when biomonitoring began (Stull et al 1986). Emissions were thus unlikely to have had a macrobenthic signature on the middle shelf at Line 10 until at least the mid-1940s, based on the initially slow rise in outflow at the original 34 m outfall (Fig.…”

Megabenthic assemblage structure on three New Zealand seamounts: implications for seafloor massive sulfide mining

“…The echiuran worms of assemblage s are not considered to be vent endemic. However, large populations may have established themselves in vent sediments in response to high levels of organic matter and hydrogen sulfide, as echiuran worms have been observed to dominate organically enriched intertidal areas (Stull et al 1986). The dominance of polychaete and echiuran worms can be partially explained by curvature and backscatter in the model.…”