Accurately measuring the abundance of benthic microalgae in spatially variable habitats (2007)
Grinham, AR, Carruthers, TJB, Fisher, PL, Udy, JW, Dennison, WC
Although many studies measure the abundance of benthic microalgae (BMA), at the meters squared scale, comparing these studies is difficult due to the variety of sampling, extraction, and analysis...
Glibert, PM, Heil, CA, ONeil, JM, Dennison, WC, ODonohue, MJH
Subtropical estuaries have received comparatively little attention in the study of nutrient loading and subsequent nutrient processing relative to temperate estuaries. Australian estuaries are...
Roelfsema, CM, Phinn, SR, Dennison, WC, Dekker, AG, Brando, VE
Large-scale blooms of Lyngbya majuscula (Gomont) have occurred throughout Moreton Bay (south-east Queensland) and have been documented since 1997. L. majuscula is a toxic cyanobacteria which fixes...
Watkinson, AJ, ONeil, JM, Dennison, WC
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...
Albert, S, ONeil, JM, Udy, JW, Ahern, KS, OSullivan, CM, Dennison, WC
During the last decade there has been a significant rise in observations of blooms of the toxic cyanobacterium, Lyngbya majuscula along the east coast of Queensland, Australia. Whether the increase...
Costanzo, SD, ODonohue, MJ, Dennison, WC
Effluent from a land based shrimp farm was detected in a receiving creek as changes in physical, chemical and biological parameters. The extent and severity of these changes depended on farm...
Benthic microalgae in coral reef sediments of the southern Great Barrier Reef, Australia (2004)
Heil, CA, Chaston, K, Jones, A, Bird, P, Longstaff, B, Costanzo, S, ...
The abundance and productivity of benthic microalgae in coral reef sediments are poorly known compared with other, more conspicuous (e.g. coral zooxanthellae, macroalgae) primary producers of coral...
Costanzo, SD, ODonohue, MJ, Dennison, WC
A combination of physical and chemical measurements and biological indicators identified nutrient impacts throughout an Australian subtropical river estuary. This was a balance of sewage inputs in...
Jones, AB, Preston, NP, Dennison, WC
Current shrimp pond management practices generally result in elevated concentrations of nutrients, suspended solids, bacteria and phytoplankton compared with the influent water. Concerns about...
Longstaff, BJ, Kildea, T, Runcie, JW, Cheshire, A, Dennison, WC, Hurd, C, ...
Direct comparisons between photosynthetic O-2 evolution rate and electron transport rate (ETR) were made in situ over 24 h using the benthic macroalga Ulva lactuca (Chlorophyta), growing and measured...
Tracing the fate of N-15-enriched feed in an intensive shrimp system (2002)
Burford, MA, Preston, NP, Glibert, PM, Dennison, WC
The fate of N-15-nitrogen-enriched formulated feed fed to shrimp was traced through the food web in shallow, outdoor tank systems (1000 1) stocked with shrimp. Triplicate tanks containing shrimp...
Spatial distribution of benthic microalgae on coral reefs determined by remote sensing (2002)
Roelfsema, CM, Phinn, SR, Dennison, WC
Understanding the ecological role of benthic microalgae, a highly productive component of coral reef ecosystems, requires information on their spatial distribution. The spatial extent of benthic...
The interaction of water flow and nutrients on aquatic plant growth (2002)
Crossley, MN, Dennison, WC, Williams, RR, Wearing, AH
A long-term experiment was conducted to compare the effects of flowing and still water on growth, and the relationship between water flow and nutrients, in Aponogeton elongatus, a submerged aquatic...
A new approach for detecting and mapping sewage impacts (2001)
Costanzo, SD, ODonohue, MJ, Dennison, WC, Loneragan, NR, Thomas, M
Increased nitrogen loading has been implicated in eutrophication occurrences worldwide. Much of this loading is attributable to the growing human population along the world's coastlines. A...
Jones, AB, ODonohue, MJ, Udy, J, Dennison, WC
Despite evidence linking shrimp farming to several cases of environmental degradation, there remains a lack of ecologically meaningful information about the impacts of effluent on receiving waters....
Jones, AB, Dennison, WC, Preston, NP
Effluent water from shrimp ponds typically contains elevated concentrations of dissolved nutrients and suspended particulates compared to influent water. Attempts to improve effluent water quality...
Hewson, I, ONeil, JM, Heil, CA, Bratbak, G, Dennison, WC
Marine viruses have been shown to affect phytoplankton productivity; however, there are no reports on the effect of viruses on benthic microalgae (microphytobenthos). Hence, this study investigated...
Hewson, I, ONeil, JM, Fuhrman, JA, Dennison, WC
Viruses are recognized as ubiquitous components of marine ecosystems however, there has been limited study of viral abundance and its ecological role in sediments. Viral abundance was determined in...
Hewson, I, ONeil, JM, Dennison, WC
Expansive blooms of the toxic cyanobacterium Lyngbya majuscula were observed in 2 shallow water regions of Moreton Bay, Australia. The rapid bloom decline (8 to <1 km(2) in <7 d) prompted an...
Costanzo, SD, ODonohue, MJ, Dennison, WC
The response of the marine macroalga Gracilaria edulis (Gmelin) Silva to nutrient pulses of varying magnitude was investigated to test its applicability as a marine bioindicator at two oligotrophic...
Physiological responses of five seagrass species to trace metals (2000)
Trace metal run-off associated with urban and industrial development poses potential threats to seagrasses in adjacent coastal ecosystems, Seagrass from the largest urban (Moreton Bay) and industrial...
Utilization of nitrogen and carbon by phytoplankton in Moreton Bay, Australia (2000)
ODonohue, MJ, Glibert, PM, Dennison, WC
Water samples were collected within river mouths, at river plume sites and at well flushed ocean-influenced sites within Moreton Bay, a shallow subtropical embayment in south-eastern Queensland....
Spatial distribution of benthic microalgae on coral reefs determined by remote sensing
Roelfsema, CM, Phinn, SR, Dennison, WC
Understanding the ecological role of benthic microalgae, a highly productive component of coral reef ecosystems, requires information on their spatial distribution. The spatial extent of benthic...
Photosynthetic responses of the coral Montipora digitata to cold temperature stress
Saxby, T, Dennison, WC, Hoegh-Guldberg, O
Coral bleaching events have become more frequent and widespread, largely due to elevated sea surface temperatures. Global climate change could lead to increased variability of sea surface...
Nitrogen ecophysiology of Heron Island, a subtropical coral cay of the Great Barrier Reef, Australia
Schmidt, S, Dennison, WC, Moss, GJ, Stewart, GR
Coral cays form part of the Australian Great Barrier Reef. Coral cays with high densities of seabirds are areas of extreme nitrogen (N) enrichment with deposition rates of up to 1000 kg N ha(-1)...
Roelfsema, CM, Phinn, SR, Dennison, WC, Dekker, AG, Brando, VE
Large-scale blooms of Lyngbya majuscula (Gomont) have occurred throughout Moreton Bay (south-east Queensland) and have been documented since 1997. L. majuscula is a toxic cyanobacteria which fixes...