Patricia Armenio
Biography
I began working with USGS as a contractor on the GLRI funded CSMI efforts on Lake Huron in 2012. This project involved researching foodweb energy transfer from nearshore to offshore waters. I continued this research on Lakes Erie and Michigan during their intensive field years in the CSMI cycle. I am now a Biological Science Technician maintaining involvement in CSMI as well as other projects at USGS.
Science and Products
Spatiotemporal variability in energetic condition of alewife and round goby in Lake Michigan
Pelagic-oriented alewife (Alosa pseudoharengus) and benthic-oriented round goby (Neogobius melanostomus) are two important prey fishes in the Laurentian Great Lakes. In 2015, we evaluated their seasonal total energy (TE) across nine Lake Michigan transects. Round goby contained at least 48% more kilojoules of TE than alewife of equal length during...
Bunnell, David; Pothoven, Steven A.; Armenio, Patricia; Eaton, Lauren A.; Warner, David; Elgin, Ashley K.; Burlakova, Lyuba E.; Karatayev, Alexander Y. Densities, diets, and growth rates of larval Alewife and Bloater in a changing Lake Michigan ecosystem.
Variability in abiotic and biotic factors during larval stages has profound impacts on fish recruitment. In Lake Michigan, where the composition of lower trophic levels has undergone considerable changes in the past decade, managers are concerned that fish recruitment could be negatively affected. We hypothesized that spatial variation in Lake...
Eppehimer, Drew E; Bunnell, David; Armenio, Patricia; Warner, David; Eaton, Lauren A.; Wells, David J; Rutherford, Edward S. Describing the distribution and productivity of biota along a nearshore to offshore gradient
The Lake Michigan Lakewide Action and Management Plan (LAMP) proposed adding nutrients (phosphorus) to its “pollutant of concern” list in 2002, given that excessive nutrients were causing impairments in nearshore waters. Since that time, scientists have highlighted the “shunting” of nutrients to the nearshore (Hecky et al. 2004), owing to the...
Bunnell, David B.; Armenio, Patricia M.; Warner, David M.; Eaton, Lauren A.; Eppehimer, Drew Status of pelagic prey fishes in Lake Michigan, 2017
Acoustic surveys were conducted in late summer/early fall during the years 1992-1996 and 2001-2017 to estimate pelagic prey fish biomass in Lake Michigan. Midwater trawling during the surveys as well as target strength provided a measure of species and size composition of the fish community for use in scaling acoustic data and providing species-...
Warner, David M.; Turscah, Ben; Hanson, Dale; Desorcie, Timothy J.; O'Brien, Timothy P.; Armenio, Patricia M.; Smith, Jason Biotic and abiotic factors influencing zooplankton vertical distribution in Lake Huron
The vertical distribution of zooplankton can have substantial influence on trophic structure in freshwater systems, particularly by determining spatial overlap for predator/prey dynamics and influencing energy transfer. The zooplankton community in some of the Laurentian Great Lakes has undergone changes in composition and declines in total...
Nowicki, Carly J.; Bunnell, David B.; Armenio, Patricia M.; Warner, David M.; Vanderploeg, Henry A.; Cavaletto, Joann F.; Mayer, Christine M.; Adams, Jean V. It's like night and day: Diel net-effects on Cercopagidae densities in the Laurentian Great Lakes
In the Laurentian Great Lakes, zooplankters are often sampled using standard ≤153 μm mesh nets without regard to the time of day they are collected. We sampled Cercopagidae during 2013–2014 in northern Lake Huron during day, dusk, and night using two different nets (a 0.5 m wide 153 μm mesh “standard” net and a 0.75 m wide...
Armenio, Patricia M.; Bunnell, David B.; Adams, Jean V.; Watson, Nicole M.; Woelmer, Whitney Eurytemora carolleeae in the Laurentian Great Lakes revealed by phylogenetic and morphological analysis
In the Laurentian Great Lakes, specimens of Eurytemora have been reported asEurytemora affinis since its invasion in the late 1950s. During an intensive collection of aquatic invertebrates for morphological and molecular identification in Western Lake Erie in 2012-2013, several specimens of Eurytemora were collected. Analysis of these specimens...
Vasquez, Adrian A.; Hudson, Patrick L.; Fujimoto, Masanori; Keeler, Kevin M.; Armenio, Patricia M.; Ram, Jeffrey L. Status and trends of prey fish populations in Lake Michigan, 2013
The U.S. Geological Survey Great Lakes Science Center has conducted lake-wide surveys of the fish community in Lake Michigan each fall since 1973 using standard 12-m bottom trawls towed along contour at depths of 9 to 110 m at each of seven index transects. The resulting data on relative abundance, size and age structure, and condition of...
Madenjian, Charles P.; Bunnell, David B.; Desorcie, Timothy J.; Kostich, Melissa Jean; Armenio, Patricia M.; Adams, Jean V. Status and trends of the Lake Huron offshore Demersal fish community, 1976-2013
The USGS Great Lakes Science Center has conducted trawl surveys to assess annual changes in the offshore demersal fish community of Lake Huron since 1973. Sample sites include five ports in U.S. waters with less frequent sampling near Goderich, Ontario. The 2013 fall bottom trawl survey was carried out between 25 October – 21 November 2013 and...
Riley, Stephen C.; Roseman, Edward F.; Chriscinske, Margret Ann; Tucker, Taaja R.; Ross, Jason E.; Armenio, Patricia M.; Watson, Nicole M.; Woelmer, Whitney