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Variation In Seagrass-Associated Macroinvertebrate Communities Along The Gulf Coast Of Peninsular Florida: An Exploration Of Patterns And Ecological Consequences, Savanna C. Barry, A. Challen Hyman, Charles A. Jacoby, Laura K. Reynolds, Mark Kowalewski, Thomas K. Frazer
Variation In Seagrass-Associated Macroinvertebrate Communities Along The Gulf Coast Of Peninsular Florida: An Exploration Of Patterns And Ecological Consequences, Savanna C. Barry, A. Challen Hyman, Charles A. Jacoby, Laura K. Reynolds, Mark Kowalewski, Thomas K. Frazer
VIMS Articles
Seagrasses form vast meadows of structurally complex habitat that support faunal communities with greater numbers of species and individuals than nearby unstructured habitats. The Gulf coast of peninsular Florida represents a natural laboratory ideally suited to the study of processes that shape seagrass-associated invertebrate and fish communities within meadows of a single species of seagrass, Thalassia testudinum. This suitability arises from a pronounced structural and chemical gradient that exists over ecologically relevant spatial and temporal scales, as revealed by extensive monitoring of water quality and seagrass. We hypothesized that seagrass-associated invertebrate communities would vary across five estuarine systems spread …
Selective Feeding Behavior Of Larval Naked Gobies Gobiosoma Bosc And Blennies Chasmodes Bosquianus And Hypsoblennius Hentzi: Preferences For Bivalve Veligers, Jm Harding
VIMS Articles
Naked gobies Gobiosoma bose, striped blennies Chasmodes bosquianus, and feather blennies Hypsoblennius hentzi provide important intermediate links within the trophic structure of estuarine oyster reef communities. Predator-prey interactions between planktonic larvae of these fishes and larval eastern oysters Crassostrea virginica may influence recruitment success within oyster reef communities. These 3 species of oyster reef fish larvae were cultured from wild nests and used in multifactorial laboratory feeding experiments with larval oysters or hard clams Mercenaria mercenaria as well as wild plankton as prey items to determine the effects of predator age, predator concentration, and prey type on feeding selectivity of …
Effects Of Sunlight On Bacteriophage Viability And Structure, Ke Wommack, Rt Hill, Ta Muller, Rr Colwell
Effects Of Sunlight On Bacteriophage Viability And Structure, Ke Wommack, Rt Hill, Ta Muller, Rr Colwell
VIMS Articles
Current estimates of viral abundance in natural waters rely on direct counts of virus-like particles (VLPs), using either transmission or epifluorescence microscopy. Direct counts of VLPs, while useful in studies of viral ecology, do not indicate whether the observed VLPs are capable of infection and/or replication. Rapid decay in bacteriophage viability under environmental conditions has been observed. However, it has not been firmly established whether there is a corresponding degradation of the virus particles, To address this question, viable and direct counts were carried out employing two Chesapeake Bay bacteriophages in experimental microcosms incubated for 56 h at two depths …
Small-Scale Organism Distributions And Patterns Of Species Diversity: Evidence For Positive Interactions In An Estuarine Benthic Community, Linda C. Schaffner
Small-Scale Organism Distributions And Patterns Of Species Diversity: Evidence For Positive Interactions In An Estuarine Benthic Community, Linda C. Schaffner
VIMS Articles
No abstract provided.
Daily, Monthly And Annual Settlement-Patterns By Callinectes-Sapidus And Neopanope-Sayi Megalopae On Artificial Collectors Deployed In The York River, Virginia - 1985-1988, J Van Montfrans, Ca Peery, R J. Orth
Daily, Monthly And Annual Settlement-Patterns By Callinectes-Sapidus And Neopanope-Sayi Megalopae On Artificial Collectors Deployed In The York River, Virginia - 1985-1988, J Van Montfrans, Ca Peery, R J. Orth
VIMS Articles
Daily, monthly and annual settlement of dominant brachyuran megalopae on six replicate artificial settlement substrates (collectors) was examined at one site in the York River, Virginia, from mid-July or early August to early December during 1985-1988. Callinectes sapidus Rathbun, an exported estuarine species, and Neopanope sayi (Smith), a retained estuarine species, were the numerically dominant colonizers of collectors. C. sapidus settlement was highly episodic (l-3-day duration) and significantly associated with the full moon period (lunar day 15-22). The temporal mean of settlement for C. sapidus each year fell within a 12-day period (24 September-6 October) over the 4 years. C. …
Variation In Planktonic Availability And Settlement Of Blue-Crab Megalopae In The York River, Virginia, Ej Olmi, J Van Montfrans, Rn Lipcius, R J. Orth, Pw Sadler
Variation In Planktonic Availability And Settlement Of Blue-Crab Megalopae In The York River, Virginia, Ej Olmi, J Van Montfrans, Rn Lipcius, R J. Orth, Pw Sadler
VIMS Articles
Blue crab, Callinectes sapidus, megalopae and juveniles were sampled in the plankton and on natural (grassbeds) and artificial settlement substrates (collectors) at two sites in each of two areas of a lower Chesapeake Bay tributary (York River, Virginia) to examine spatial variability in blue crab recruitment. Spatial patterns of abundance were not consistent across habitats (plankton, artificial collectors and grassbeds) or time. Densities of planktonic megalopae were homogeneous at 1-2 m (within site) but varied at spatial scales of hundreds of meters (between sites) and kilometers (between areas). Settled megalopae were distributed unevenly within and between sites, but their abundance …
Comparative Ecology Of Nekton Residing In A Tidal Creek And Adjacent Seagrass Meadow: Community Composition And Structure, Mp Weinstein, Ha Brooks
Comparative Ecology Of Nekton Residing In A Tidal Creek And Adjacent Seagrass Meadow: Community Composition And Structure, Mp Weinstein, Ha Brooks
VIMS Articles
No abstract provided.
Spatial And Temporal Resource Use By Dominant Benthic Amphipoda (Ampeliscidae And Corophiidae) On The Middle Atlantic Bight Outer Continental Shelf, Lc Schaffner, Df Boesch
Spatial And Temporal Resource Use By Dominant Benthic Amphipoda (Ampeliscidae And Corophiidae) On The Middle Atlantic Bight Outer Continental Shelf, Lc Schaffner, Df Boesch
VIMS Articles
No abstract provided.
Larval Development Of Pagurus Longicarpus Say Reared In The Laboratory. V. Effect Of Diet On Survival And Molting, Morris H. Roberts
Larval Development Of Pagurus Longicarpus Say Reared In The Laboratory. V. Effect Of Diet On Survival And Molting, Morris H. Roberts
VIMS Articles
During the last several decades, papers too numerous to list here have been published describing larval stages of decapod crustaceans reared in the laboratory. Through this work techniques for rearing these larvae have become standardized, making a variety of physiological amid ecological experiments possible (for example, Costlow, 1961, 1964, 1966, 1967 ; Costlow and Bookhout, 1968 ; Roberts, 1971a, 1971b). Yet relatively little is known about the nutritional requirements of decapod larvae. Lebour ( 1922) performed a limited number of stomach content analyses on planktonic zoeae and reported that decapod larvae are principally phytophagous. Subsequent laboratory study led her to …
Larval Development Of Pagurus Longicarpus Say Reared In The Laboratory. Ii. Effects Of Reduced Salinity On Larval Development, Morris H. Roberts Jr.
Larval Development Of Pagurus Longicarpus Say Reared In The Laboratory. Ii. Effects Of Reduced Salinity On Larval Development, Morris H. Roberts Jr.
VIMS Articles
Temperature and salinity define a set of conditions within which planktonic organisms can survive and develop. Thorson ( 1946) described the restriction of some meroplankters to Kattegat water in the Oresund which was presumed to be based on either a temperature, or a salinity discontinuity or both. Bary ( 1963a, b, c) , in an extensive study of North Atlantic plankton, clearly demonstrated a relationship between zooplankton distribution and temperature-salinity distribution. Banse ( 1956) observed the distribution of polychaete and echinoderm larvae with respect to various water masses in Kiel Bay. He concluded that these larvae were restricted to their …
Frequencies Of Infaunal Invertebrates Related To Water Content Of Chesapeake Bay Sediments, W. Harrison, Marvin L. Wass
Frequencies Of Infaunal Invertebrates Related To Water Content Of Chesapeake Bay Sediments, W. Harrison, Marvin L. Wass
VIMS Articles
The following relationship was investigated for a total of 44 stations, using sequential (linear) multiregression analysis: A = f (D, S a , S i., C, M z, S o , W) 1 z o where A = the frequency of an infaual invertebrate species, D : water depth at the station, Sa = per cent sand, Si =percent silt, C = per cent clay, Mz = mean grain size, S o = sediment Sorting Coefficient, and W = water content. Three animals were chosen for the dependent variable: Ensis directus, Nephtys incisa, and Retusa canaliculata. Results of the least-squares …
Frequencies Of Infaunal Invertebrates Related To Water Content Of Chesapeake Bay Sediments, W. Harrison, Marvin L. Wass
Frequencies Of Infaunal Invertebrates Related To Water Content Of Chesapeake Bay Sediments, W. Harrison, Marvin L. Wass
VIMS Articles
The following relationship was investigated for a total of 44 stations, using sequential (linear) multiregression analysis:
A = f (D, S a , S., C, M , S , W)
where A = the frequency of an infauna! invertebrate species, D : water depth at the station, Sa = per cent sand, Si =percent silt, C = per cent clay, Mz = mean grain size, S o = sediment Sorting Coefficient, and W = water content. Three animals were chosen for the dependent variable: Ensis directus, Nephtys incisa, and Retusa canaliculata.
Results of the least-squares search procedure indicate that if …