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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

The influence of heavy metals on the diet changes of Neoperla (Plecoptera) in the northwest Miramichi River, New Brunswick /

MacIntosh, John, 1967- January 2002 (has links)
In the summers 1997, 1998 and 1999, over 100 aquatic invertebrate kick samples were collected in the Northwest Miramichi River of northeastern New Brunswick to examine the effects of chronic heavy metal exposure on the aquatic predatory Plecoptera community. In the group of predators, Neoperla (Plecoptera) was numerically dominant and gut content identifications were used to determine food chain and life cycle stages. Neoperla diet analysis indicated the Chironomidae (Diptera) as the dominant prey with predation upon Trichoptera and Ephemeroptera influenced by the life cycle stage of the predator. Gut content totals were analysed for predatory diet changes due to heavy metal contamination exposure. The Neoperla community indicated a prey shift from a Chironomidae based diet to one including a higher percentage of Ephemeroptera and Trichoptera earlier in the predators life history when compared with upstream control sites. Neoperla diets maintained their shift from the control station diets as the downstream movement of heavy metal contaminated water mixed and dissipated within the study area.
2

The influence of heavy metals on the diet changes of Neoperla (Plecoptera) in the northwest Miramichi River, New Brunswick /

MacIntosh, John, 1967- January 2002 (has links)
No description available.
3

Migrant seasonings : food practices, cultural memory, and narratives of 'home' among Dominican communities in New York City

Marte, Lidia, 1965- 24 September 2012 (has links)
This dissertation examines politics and poetics of food, memory and ‘home’ among Dominican immigrants in New York City. Through a framework of ‘foodmaps’ it traces cultural histories of seven Dominican families from the gendered perspectives of the cooks in each household. Examining translocal food paths reveal the crucial role of migrant food relations in gendered production of home, place-making and community formations. ‘Migrant seasonings’ (the way immigrants season their foods and lives and the way they are ‘seasoned’ into new social relations) could be understood as contested sites of power negotiations, as strategic reclamation of ‘small measures of autonomy’, sociopolitical action, and historical visibility. Dominican foodmaps respond to culturally and historically specific ‘roots’ and ‘routes’ shared with other Afro-diasporic populations in the Americas. Food-place-memory becomes hence a continuum between geopolitical ‘seasonings’ in sending societies and new racializations in the US. Some findings of this project are: 1) food paid-unpaid labor are critical in negotiations of labor-time, places and social relations within households and in relation to the City and US state; 2) food is a key mediation for the way Dominican migrants learn to navigate and orient themselves in new environments; 3) cooking practices are inseparable from the narrative memories that give them meaning, constituting complex memory-work strategies, communicative and expressive means; 3) Food practices are crucial for the way cooks (especially women) claim value and autonomy for their life projects, produce senses of ‘home’, and re-inscribe through food-narratives their migrant history of struggles in Dominican Republic and the U.S. Basic contributions of this work are: 1) filling gaps in critical ethnographic research on food, gender and migration in Dominican and Caribbean studies; 2) development of a ‘foodmaps’ framework (a method-analytic frame to trace boundaries of ‘home’ through food relations); 3) examining food practices beyond ‘ethnic foodways’ tradition and nostalgia, but instead as critical and traumatic place-memory sites of implicit resistance, and as narrative spaces that re-inscribe working-class histories into hegemonic national narratives; 4) problematizing notions of private/public, personal/collective, memory/history in Afro-Caribbean socio-cultural formations; and 5) ‘native’ ethnography usage of interdisciplinary feminist, collaborative and media-based methodologies. / text

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