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Predator identity and additive effects in a treehole community (Page 1)

Predator identity and additive effects in a treehole community

Griswold MW and Lounibos LP ·
2006

Multiple predator species can interact as well as strongly affect lower trophic levels, resulting in complex, nonadditive effects on prey populations and community structure. Studies of aquatic systems have shown that interactive effects of predators on prey are not necessarily predictable from the direct effects of each species alone.

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Competitive outcomes of aquatic container diptera depend on predation and resource levels

Griswold MW and Lounibos LP ·
2005

Resources and predation are both known to be important in structuring communities; however the strength of one factor may be affected by the intensity of the other. This study used a fully crossed factorial experiment in laboratory microcosms to examine the ability of a predator, Corethrella appendiculata (Grabham), and basal resources (leaf litter) to differentially affect two competing species of mosquito prey.

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Does differential predation permit invasive and native mosquito larvae to coexist in Florida?

Griswold MW and Lounibos LP ·
2005

1. The hypothesis that selective predation on larvae of the invasive Aedes albopictus (Skuse) could account for its stable coexistence with the native mosquito species and inferior competitor Ochlerotatus triseriatus (Say) in Florida treeholes and container systems was tested experimentally. 2. Functional responses of the two dipteran predators Toxorhynchites rutilus (Coquillett) and Corethrella appendiculata (Grabham) were evaluated separately for A. albopictus and O. triseriatus prey.

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Ecophysiology of the marine cyanobacterium, Lyngbya majuscula (Oscillatoriaceae) in Moreton Bay, Australia (Page 1)

Ecophysiology of the marine cyanobacterium, Lyngbya majuscula (Oscillatoriaceae) in Moreton Bay, Australia

Watkinson AJ, O'Neil JM, and Dennison WC ·
2005

Large blooms of the marine cyanobacterium Lyngbya majuscula in Moreton Bay, Australia (27 degrees 05'S, 153 degrees 08'E) have been re-occurring for several years. A bloom was studied in Deception Bay (Northern Moreton Bay) in detail over the period January-March 2000. In situ data loggers and field sampling characterised various environmental parameters before and during the L. majuscula bloom.

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Ecosystem response to antibiotics entering the aquatic environment

Costanzo SD, Murby J, and Bates J ·
2005

Awareness of antibiotics in wastewaters and aquatic ecosystems is growing as investigations into alternate pollutants increase and analytical techniques for detecting these chemicals improve. The presence of three antibiotics (ciproffoxacin, norfloxacin and cephalexin) was evaluated in both sewage effluent and environmental waters downstream from a sewage discharge.

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Habitat complexity and sex-dependent predation of mosquito larvae in containers

Alto BW, Griswold MW, and Lounibos LP ·
2005

Studies in aquatic systems have shown that habitat complexity may provide refuge or reduce the number of encounters prey have with actively searching predators. For ambush predators, habitat complexity may enhance or have no effect on predation rates because it conceals predators, reduces prey detection by predators, or visually impairs both predators and prey.

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Influence of submarine springs and wastewater on nutrient dynamics of Caribbean seagrass meadows (Page 1)

Influence of submarine springs and wastewater on nutrient dynamics of Caribbean seagrass meadows

Carruthers TJB, van Tussenbroek BI, and Dennison WC ·
2005

The east coast of the Yucatan Peninsula, Mexico, consists of highly permeable limestone, such that surface flow and rivers are absent in this region. Extensive underground cave systems connect sink holes (cenotes) to submarine springs (ojos de aqua), which vent into the seagrass meadows of the adjacent oligotrophic coastal lagoons.

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Lagoon scale processes in a coastally influenced Caribbean system: Implications for the seagrass Thalassia testudinum (Page 1)

Lagoon scale processes in a coastally influenced Caribbean system: Implications for the seagrass Thalassia testudinum

Carruthers TJB, Barnes PAG, Jacome GE, and Fourqurean JW ·
2005

The Bocas del Toro archipelago in the Caribbean sea on the northwest coast of Panama has high annual rainfall (> 3000 mm) and a mountainous watershed, resulting in high inflow of fresh water. The two main lagoons have different geologic structure and different inputs; while Bahia Almirante has carbonate sediment and a relatively small watershed, Laguna de Chiriqui has predominantly siliclastic sediment and a very large watershed.

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