Hepatic Burdens of PCB and PCDD/F Congeners in Federally Endangered Shortnose Sturgeon and Atlantic Sturgeon from the Hudson River, New York, USA: Burden Patterns and Potential Consequences in Offspring

Sturgeon populations worldwide are threatened with extirpation but little is known about their tendency to bioaccumulate contaminants and their sensitivities to environmental burdens of these contaminants. Shortnose sturgeon and Atlantic sturgeon, two species that are federally endangered in the U.S., co-occur in the Hudson River (HR) where high sediment levels of PCBs and PCDD/Fs occur. Previous controlled laboratory studies showed that young life-stages of both species are sensitive to toxicities at low levels of TCDD and PCB126 exposure. The objective here was to measure congener-specific hepatic levels of PCBs and PCDD/Fs in HR specimens in order to determine if in situ bioaccumulation of these compounds was sufficiently high to cause the early life-stage toxicities previously observed. Estimates of hepatic burdens of PCBs and PCDD/Fs were obtained from a small number of specimens of each species collected between 2014 and 2016 and specimens of shortnose sturgeon collected over 30 yr earlier and archived in a museum collection. Several significant patterns emerged. Hepatic levels of legacy PCBs and PCDDs were low in specimens of both species, but typically higher in shortnose than Atlantic sturgeon, a pattern consistent with their habitat use in the HR. Hepatic burdens from archived specimens of shortnose sturgeon tended to be higher than more recently collected ones despite expected reduction in their burdens due to preservation methods. Several inadvertent PCBs congeners were detected, including PCB11, but their possible toxicity to natural populations remains to be determined in future experiments. Levels of select PCDFs congeners, 2,3,7,8-TCDF and 2,3,4,7,8 PeCDF, were elevated in some shortnose sturgeon individuals from the HR. Using Relative Potency (ReP) factors derived from white sturgeon, the observed levels of some hepatic PCDFs in HR shortnose sturgeon may have been sufficiently high to impair recruitment of young life-stages in this ecosystem.

Retaining social and cultural sustainability in the Hudson river watershed of New York, USA, a place-based participatory action research study

Purpose Societal problems have impacted the northeast of the USA for various generations. This paper aims to analyse various sustainability aspects in the Hudson River watershed of New York by highlighting a temporal progression from environmental sustainability at the watershed level in the 1970s to growing concerns with more localized cross-border social and cultural sustainability in recent decades. We discuss an engagement with the Rapp Road Historic District and a documentary screening series as potential ways to eliminate racism and embrace diversity. Design/methodology/approach The research was based on fieldwork and classroom teaching conducted mostly since summer 2014. It included mixed methods combining document analysis and reviews with the examination of case studies, and the assessment of public policy priorities. Findings Formal training has to be combined with a substantial dose of realism, humility and motivation to recognize that what the authors teach and research in the community matters. Future learning experiences within a place-based education paradigm could include: Having students help devise urban rehabilitation strategies whilst suggesting integrative measures with the surrounding built and natural environments; students could also help improve public spaces in the neighbourhood; and finally, they could also help to strengthen the cultural identity of the district by augmenting urban design features endogenous to the African American community. Practical implications Opportunities could be further augmented with service-learning projects and programmes, internships and even full-time jobs for recent graduates in local community development organizations. Social implications The study served to raise the community’s awareness of its own natural, ecological and human assets, and to create place-based real-world opportunities for students and faculty in environmental and cultural sustainability studies. Originality/value Environmental sustainability is discussed with the creation of the Hudson River Valley National Heritage Area, whilst the public engagement with the Rapp Road Historic Association in the Capital Region of upstate New York, the identification of an emerging creative cluster in the Berkshires-Hudson region, and a documentary and discussion series on striving for diverse cities serve to demonstrate current concerns with social and cultural sustainability.

The Chosen People: The Hudson River School and the Construction of American Identity

This article considers nineteenth-century riverscapes of the Hudson in relation to the formation of American identity. It argues that riverscapes in the United States contributed to welding a national identity to a Christian one, although officially the identities were distinct. I examine the role of the Hudson River School in the creation of the ‘wilderness’ as an image of American homeland, and how this construct incorporated the iconic figure of the Euro-American Christian ‘pilgrim-pioneer.’ America looked more to the future than to the past for its national narrative, and an orientation to the future was symbolized in art by the flow of the Hudson toward distant horizons, while the pioneer identity was extended to embrace the entrepreneur-developer. The pioneer has remained an iconic figure for American nationalism, but is now more firmly located in the nation’s past; Janus’s gaze has been adjusted, demonstrating the potentially fluid character of nationalist discourse.

Vincetoxicum nigrum (black swallowwort).

V. nigrum is a herbaceous climbing vine native to south-western Europe (Italy, France, Portugal and Spain). It has spread extensively throughout New England, the lower Hudson River basin and south-eastern Pennsylvania, USA. V. nigrum produces a large number of wind-borne, self-fertile seeds which readily disperse to new sites. Small patches of V. nigrum can coalesce to form large, monospecific stands that outcompete with native vegetation and alter habitats. In Vermont and New Hampshire, USA, the endemic and endangered species, Astragalus robbinsii var. jesupii, is under pressure by an expanding population of V. nigrum. In addition to this V. nigrum may have negative impact on the monarch butterfly, Danaus plexippus.