Temporal Changes of Populations and Trophic Relationships of Wintering Diving Ducks in Chesapeake Bay

Perry, Matthew C.; Wells‐Berlin, Alicia M.; Kidwell, David; Osenton, P.C.

doi:10.1675/1524-4695(2007)030[0004:tcopat]2.0.co;2

Cited by 33 publications

(25 citation statements)

References 17 publications

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“…As a group, the scoters were more abundant in flatter areas along the coast (Table 1), which is consistent with previous research showing that black, surf, and whitewinged scoters prefer sandy sections along the Atlantic shoreline (Stott and Olson 1973). Observational data from other studies have demonstrated that common eiders may prefer rugged substrate, but long-tailed ducks have not been clearly linked to bottom substrate (Perry et al 2007). These results, as well as bay associations, may be related to the resolution of the count and covariate data.…”

Section: Discussionsupporting

confidence: 90%

“…It is difficult to gather information on sea ducks during the winter, not only because of the inaccessibility of their offshore locations, but also due to the tendency of some species to aggregate in large, mobile flocks. Outside of a few areas (e.g., Chesapeake Bay- Perry et al 2007), the status and trends of sea ducks along the eastern US and Canadian coasts have not been well established (Caithamer et al 2000;Sea Duck Joint Venture 2003).…”

Section: Introductionmentioning

confidence: 99%

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Distribution patterns of wintering sea ducks in relation to the North Atlantic Oscillation and local environmental characteristics

Zipkin¹,

Gardner²,

Gilbert

et al. 2010

Oecologia

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Twelve species of North American sea ducks (Tribe Mergini) winter off the eastern coast of the United States and Canada. Yet, despite their seasonal proximity to urbanized areas in this region, there is limited information on patterns of wintering sea duck habitat use. It is difficult to gather information on sea ducks because of the relative inaccessibility of their offshore locations, their high degree of mobility, and their aggregated distributions. To characterize environmental conditions that affect wintering distributions, as well as their geographic ranges, we analyzed count data on five species of sea ducks (black scoters Melanitta nigra americana, surf scoters M. perspicillata, white-winged scoters M. fusca, common eiders Somateria mollissima, and long-tailed ducks Clangula hyemalis) that were collected during the Atlantic Flyway Sea Duck Survey for ten years starting in the early 1990s. We modeled count data for each species within ten-nautical-mile linear survey segments using a zero-inflated negative binomial model that included four local-scale habitat covariates (sea surface temperature, mean bottom depth, maximum bottom slope, and a variable to indicate if the segment was in a bay or not), one broad-scale covariate (the North Atlantic Oscillation), and a temporal correlation component. Our results indicate that species distributions have strong latitudinal gradients and consistency in local habitat use. The North Atlantic Oscillation was the only environmental covariate that had a significant (but variable) effect on the expected count for all five species, suggesting that broad-scale climatic conditions may be directly or indirectly important to the distributions of wintering sea ducks. Our results provide critical information on species-habitat associations, elucidate the complicated relationship between the North Atlantic Oscillation, sea surface temperature, and local sea duck abundances, and should be useful in assessing the impacts of climate change on seabirds.

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Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Distribution patterns of wintering sea ducks in relation to the North Atlantic Oscillation and local environmental characteristics

Zipkin¹,

Gardner²,

Gilbert

et al. 2010

Oecologia

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“…Preliminary work suggests that subacute doses of domoic acid in infants and children have an adverse affect on mental development and memory, suggesting that doses too low to cause acute symptoms can still have an effect (Grattan et al 2002). In addition, many of the overwintering water fowl in the Chesapeake are seaducks, which are known to consume marine invertebrates, potential DA vectors (Perry et al 2004). A rare or small toxic event involving these birds could be easily missed and go unreported (Shumway et al 2003).…”

Section: Discussionmentioning

confidence: 99%

Distribution, Abundance and Domoic Acid Analysis of the Toxic Diatom Genus Pseudo-nitzschia from the Chesapeake Bay

Thessen

Stoecker

2008

Estuaries and Coasts

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Very little research has been conducted on midAtlantic estuarine populations of the diatom Pseudonitzschia despite recent evidence of toxicity in regional isolates. We collected field samples from the Chesapeake Bay region from 2002 to 2007 for Pseudo-nitzschia enumeration and toxin analysis. Abundances of Pseudonitzschia were highest in the winter and spring at ∼10 3 cells ml −1 . Domoic acid (DA) was detectable in 42% of samples tested, but concentrations were generally low, ranging from 0 to 1,037 pg DA ml −1 (mean 176 pg DA ml −1 ), and DA cell quota ranged from <0.1 to 49.4 pg DA per cell (mean 1.4 pg DA per cell). Although Pseudo-nitzschia populations were observed year round when salinity was ≥5, populations were highest from February to May when temperatures were low (2-15°C) and salinity relatively high (≥10). Six species of Pseudo-nitzschia were identified via transmission electron microscopy of the samples: P. pungens (Grunow ex Cleve) Hasle, P. calliantha Lundholm, Moestrup et Hasle, P. subpacifica (Hasle) Hasle, P. cuspidata (Hasle) Hasle emend. Lundholm, Moestrup et Hasle, P. fraudulenta (Cleve) Hasle and P. multiseries (Hasle) Hasle. P. callianthawas the most common and not previously reported from the Chesapeake Bay. Of these species, P. pungens, P. calliantha, P. cuspidata, P. fraudulenta and P. multiseries are known to produce domoic acid.

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“…R. cuneata is a suspension feeder ingesting large quantities of detritus and phytoplankton, and could be an important food source for crabs, fish from the family of Cyprinidae, and birds like the goldeneye Bucephala clangula, the velvet scoter Melanitta fusca, the common scoter Melanitta nigra and the long-tailed duck Clangula hyemalis (Darnel 1958, Eie and Borgstrøm 1981, LaSalle & de la Cruz 1985, Bonsdorff & Blomqvist 1993, Skilleter & Peterson 1994, Kube 1996, Perry et al 2007.…”

Section: Results and Discusionmentioning

confidence: 99%

Non-indigenous bivalve — the Atlantic rangia Rangia cuneata — in the Wisła Śmiała River (coastal waters of the Gulf of Gdańsk, the southern Baltic Sea)

Janas

Kendzierska

Dąbrowska

et al. 2014

Oceanological and Hydrobiological Studies

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Temporal Changes of Populations and Trophic Relationships of Wintering Diving Ducks in Chesapeake Bay

Cited by 33 publications

References 17 publications

Distribution patterns of wintering sea ducks in relation to the North Atlantic Oscillation and local environmental characteristics

Distribution patterns of wintering sea ducks in relation to the North Atlantic Oscillation and local environmental characteristics

Distribution, Abundance and Domoic Acid Analysis of the Toxic Diatom Genus Pseudo-nitzschia from the Chesapeake Bay

Non-indigenous bivalve — the Atlantic rangia Rangia cuneata — in the Wisła Śmiała River (coastal waters of the Gulf of Gdańsk, the southern Baltic Sea)

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