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Articles 211 - 218 of 218
Full-Text Articles in Physical Sciences and Mathematics
Assessment Of The Coral Reefs Of The Turks And Caicos Islands (Part 1: Stony Corals And Algae), Bernhard Riegl, Carrie Manfrino, Casey Hermoyian, Marilyn Brandt, Kaho Hoshino
Assessment Of The Coral Reefs Of The Turks And Caicos Islands (Part 1: Stony Corals And Algae), Bernhard Riegl, Carrie Manfrino, Casey Hermoyian, Marilyn Brandt, Kaho Hoshino
Marine & Environmental Sciences Faculty Articles
Major constituents of the benthic reef community (stony corals, algae) were assessed in 28 reefs on the Caicos, Turks and Mouchoir Banks. Living stony coral cover ranged from 8-28%, averaging 18% overall. Montastraea annularis and M. faveolata of “intermediate” sizes (cm) dominated all examined reefs. Acropora palmata and A. cervicornis were scarce. The most frequently recruiting scleractinians were Porites astreoides and Agaricia agaricites; Montastraea recruits were uncommon. Old partial-colony mortality (overall mean = 23%) was greater than recent partial-colony mortality (mean = 3%). Crustose coralline algae and turf algae were generally more abundant than macroalgae. Mouchoir Bank, with the …
A Monte Carlo Demographic Analysis Of The Silky Shark (Carcharhinus Falciformis): Implications Of Gear Selectivity, Lawrence R. Beerkircher, Mahmood S. Shivji, Enric Cortes
A Monte Carlo Demographic Analysis Of The Silky Shark (Carcharhinus Falciformis): Implications Of Gear Selectivity, Lawrence R. Beerkircher, Mahmood S. Shivji, Enric Cortes
Marine & Environmental Sciences Faculty Articles
No abstract provided.
Status Of Coral Reefs Of Little Cayman, Grand Cayman And Cayman Brac, British West Indies, In 1999 And 2000 (Part 1: Stony Corals And Algae), Carrie Manfrino, Bernhard Riegl, Jerome L. Hall, Robert Graifman
Status Of Coral Reefs Of Little Cayman, Grand Cayman And Cayman Brac, British West Indies, In 1999 And 2000 (Part 1: Stony Corals And Algae), Carrie Manfrino, Bernhard Riegl, Jerome L. Hall, Robert Graifman
Marine & Environmental Sciences Faculty Articles
A benthic assessment of the isolated Cayman Islands was completed at 42 sites. Major changes in the reef community structure were documented by comparison with earlier studies. Acropora palmata and A. cervicornis, once abundant as shallow framework builders, were uncommon. Diseased stony corals were seen in >90% of the study sites, with the highest averages in Little Cayman, especially at Bloody Bay which is one of the most highly regulated marine parks in the Cayman Islands. The Montastraea annularis species complex accounted for two-thirds of the diseased corals which, along with other massive species, were affected largely by white-plague …
Quantifying Ecosystem Geomorphology Of The Southern Appalachian Mountains, Scott R. Abella
Quantifying Ecosystem Geomorphology Of The Southern Appalachian Mountains, Scott R. Abella
Public Policy and Leadership Faculty Publications
Geomorphology is a dominant factor influencing vegetation distribution in the southern Appalachians, and quantifying landform characteristics is increasingly important for forest ecosystem classification. This study used slope gradient and two previously published geomorphic indices, terrain shape index and landform index that quantify landform shape and protection, to develop a field-based landform quantification system at four study areas in the southern Appalachians. Six major landform types (ridgetops, nose slopes, linear hillslopes, coves, stream ravines, and stream bottoms) exhibited quantitatively different characteristics, and these differences among landforms were not evident when using only categorical landform descriptions (e.g., convex, concave) that have been …
Addressing Off-Site Nutrient Pollution Through Conventional Management Actions: A Modelling Case Study, David Weaver, Simon Neville, David Deeley
Addressing Off-Site Nutrient Pollution Through Conventional Management Actions: A Modelling Case Study, David Weaver, Simon Neville, David Deeley
Conference papers and presentations
The ecology of estuaries on the south coast of Western Australia has been disrupted by increased nutrient and sediment discharge from predominantly rural catchments. Seagrass beds have been replaced by macroalgae, and toxic algal blooms threaten human and animal health, and reduce amenity. A range of conventional management actions are available to reduce nutrient loss at source, and it is important to evaluate possible reductions, and costs, so that limited funds can be targeted to realise the greatest moderation of nutrient loss. A lumped landuse nutrient generation rate model was developed for four catchments (Wilson Inlet, Oyster Harbour, Torbay Inlet …
Structural And Biochemical Analyses Of Dna And Rna Binding By A Bifunctional Homing Endonuclease And Group I Intron Splicing Factor, Jill M. Bolduc, P. Clint Spiegel, Pivali Chatterjee, Kristina L. Brady, Maureen E. Downing, Mark G. Caprara, Richard B. Waring, Barry L. Stoddard
Structural And Biochemical Analyses Of Dna And Rna Binding By A Bifunctional Homing Endonuclease And Group I Intron Splicing Factor, Jill M. Bolduc, P. Clint Spiegel, Pivali Chatterjee, Kristina L. Brady, Maureen E. Downing, Mark G. Caprara, Richard B. Waring, Barry L. Stoddard
Chemistry Faculty and Staff Publications
We determined the crystal structure of a bifunctional group I intron splicing factor and homing endonuclease, termed the I-AniI maturase, in complex with its DNA target at 2.6 Å resolution. The structure demonstrates the remarkable structural conservation of the (3-sheet DNA-binding motif between highly divergent enzyme subfamilies. DNA recognition by I-AniI was further studied using nucleoside deletion and DMS modification interference analyses. Correlation of these results with the crystal structure provides information on the relative importance of individual nucleotide contacts for DNA recognition. Alignment and modeling of two homologous maturases reveals conserved basic surface residues, distant …
Natural Resource Management Issues In The Agricultural Zone Of Western Australia : South West Region, B Nicholas, Paul Galloway, Peter J. Tille, Angela Stuart-Street, Heather M. Percy
Natural Resource Management Issues In The Agricultural Zone Of Western Australia : South West Region, B Nicholas, Paul Galloway, Peter J. Tille, Angela Stuart-Street, Heather M. Percy
Resource management technical reports
Provides and analysis of current pressures on agricultural resources of the South West region of Western Australia. Differing ranges of risks are shown for different degradation issues because of various impacts. Each natural resource management issues covers nature and extent of susceptibility, impacts on agriculture and the environment, management options and effectiveness of management options.
Groundwater Study Of The Nyabing Townsite, Louise Hopgood
Groundwater Study Of The Nyabing Townsite, Louise Hopgood
Resource management technical reports
A groundwater study was carried out in the townsite of Nyabing, Western Australia. The study presents a model of the hydrogeology below the town and defines management options to help limit damage to infrastructure from surface water and groundwater rise. A drilling program and expansion of the network of monitoring bores were also part of the study.