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Effects of habitat quality on secondary production in shallow estuarine waters and the consequences for the benthic-pelagic food web

TLDR
In this article, the authors discuss the impact of habitat degradation on second-person production in the Saline Estuary and the Tidal Freshwater watershed in the state of Illinois.
Abstract
................................................................................................................... ix CHAPTER I. ASSESSMENT OF HABITAT DEGRADATION IN THE COASTAL ZONE AND THE CONSEQUENCES FOR RESIDENT BlOT A .................................. .2 Introduction .............................................................................................................. 3 Motivations and Investigative Approach ............................................................... 12 Literature Cited ...................................................................................................... 15 CHAPTER II. THE INFLUENCE OF HABIT AT QUALITY ON SECONDARY PRODUCTION IN SHALLOW ESTUARINE WATERS ............................................ 28 Abstract .................................................................................................................. 29 Introduction ............................................................................................................ 30 Materials and Methods ........................................................................................... 33 Site Selection ................................................................................................... 33 Data Collection ..................................................................... , .......................... 34 Analysis ............................................................................................................ 37 Results .................................................................................................................... 39 Discussion .............................................................................................................. 41 Interpreting the Saline Estuary ........................................................................ .42 Interpreting the Tidal Freshwater .................................................................... .46 Some Comments on Biodiversity and Productivity ........................................ .47 Conclusions ............................................................................................................ 49 Literature Cited ...................................................................................................... 50 CHAPTER Ill. THE INFLUENCE OF HABIT AT QUALITY AND MACROBENTHIC COMMUNITY COMPOSITION ON NEKTON UTILIZATION OF SECONDARY PRODUCTION AS A FOOD SOURCE ........................................................................ 68 Abstract .................................................................................................................. 69 Introduction ............................................................................................................ 70 Materials and Methods ........................................................................................... 74 Site Selection ................................................................................................... 7 4 Data Collection ................................................................................................ 74 Analysis ............................................................................................................ 77 Results .................................................................................................................... 80 Site Characterization ........................................................................................ 80

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The role of standing dead Spartina alterniflora and benthic microalgae in salt marsh food webs: considerations based on multiple stable isotope analysis

TL;DR: In this article, the stable isotope compositions (C, N, and S) of hve, senescent, and standing dead Spartina alterniflora were compared in order to determine the effects of aerial decomposition on the isotopic signature of aboveground S. alternjflora entering the food chain, which indicated that N2fixing microorganisms associdated with microalgal communities were an important source of N to salt marsh consumers.
Journal ArticleDOI

Links between epibenthic community patterns and habitat characteristics in the Parila lagoon (Croatia)

TL;DR: The ecological analysis showed that total phosphorus concentration, temperature and salinity were the main environmental parameters affecting community structure of the Parila lagoon, and six species listed as frequent have a potential to be used as indicators of habitat quality.
References
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Identification of food sources of invertebrates from the seagrass Zostera marina community using carbon and sulfur stable isotope ratio and fatty acid analyses

TL;DR: Significant interspe- cific variations of both the sulfur isotope ratios and the fatty acid composition of these consumers suggest that there are a variety of pathways by which seagrass organic matter reaches invertebrates at lower trophic levels of the community food web.
Journal ArticleDOI

Guild structure and foraging impact of blue crabs and epibenthic fish in a subestuary of Chesapeake Bay

TL;DR: These experiments indicate that the Guild of epibenthic predators foraging activity not only has strong direct effects on infaunal community structure, but that the guild also has significant indirect effects oninfaunalcommunity organization and patch dynamics which are highly variable in space and time.
Journal ArticleDOI

Interpreting stable isotopes in food webs: Recognizing the role of time averaging at different trophic levels

TL;DR: In this article, the isotope signatures of the lower trophic levels were an indicator of a recent upwelling event, identified by wind speed and nitrate concentration data, that occurred over a 4-d period several days prior to sampling.
Journal Article

Life history, feeding habits, and functional morphology of juvenile sciaenid fishes in the york river estuary, virginia1,2

TL;DR: Stomach contents indicated that the food partitioning of these six species was closely correlated with the species and their prey habitat, and were found to be important in locating and ingesting prey in the water column.
Journal ArticleDOI

Stable isotopes' as trophic tracers: combining field sampling and manipulative labelling of food resources for macrobenthos

TL;DR: The macrobenthic biomass at 5 study locations, when weighted by these coefficients, correlated very well with measured productivity of the microphytobenthos, and appeared to depend almost exclusively on pelagic algae (and possibly detrital carbon) as a food source.
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