Algal turf negatively affects recruitment of a Caribbean octocoral

Coral Reefs ◽  
2021 ◽  
Author(s):  
Christopher D. Wells ◽  
Ángela Martínez-Quintana ◽  
Kaitlyn J. Tonra ◽  
Howard R. Lasker
Keyword(s):  
Algal Turf

An economic assessment of algal turf scrubber technology for treatment of dairy manure effluent

2006 ◽  
Vol 26 (4) ◽  
pp. 321-327 ◽  
Author(s):  
C. Pizarro ◽  
W. Mulbry ◽  
D. Blersch ◽  
P. Kangas
Keyword(s):  
Economic Assessment ◽  
Dairy Manure ◽  
Algal Turf ◽  
Algal Turf Scrubber

scholarly journals COMPARAÇÃO DE MÉTODOS DE RUPTURA CELULAR E EXTRAÇÃO DE LIPÍDIOS DE BIOMASSA PERIFÍTICA

2021 ◽  
Vol 10 (1) ◽  
pp. 1-9
Author(s):  
Mainara Nicaretta Dahmer ◽  
Lisianne Brittes Benitez
Keyword(s):  
Algal Turf ◽  
Santa Cruz ◽  
Algal Turf Scrubber

O perifíton, ou biofilme, caracteriza-se como uma comunidade complexa de organismos aquáticos aderidos a substratos submersos, dentre os quais destacam-se as microalgas, as quais são componentes de um grupo variado de organismos, cujo conteúdo em lipídios reflete essa diversidade. O objetivo deste estudo foi desenvolver um método utilizando a irradiação por micro-ondas para rompimento da parede celular das microalgas visando a extração dos lipídios presentes com maior eficiência que o método tradicional de Bligh e Dyer. A biomassa empregada foi proveniente de um sistema Algal Turf Scrubber, localizado nas margens do Lago Dourado, em Santa Cruz do Sul, RS. Partindo de um planejamento fatorial 23, as amostras foram secas a 50 °C até peso constante, irradiadas por micro-ondas (65 °C e 200 W), centrifugadas, filtradas e secas a 70 °C até peso constante. O maior rendimento lipídico foi no experimento 7 (6,27 %), utilizando tempo de extração maior (15 minutos), menor quantidade de biomassa (300 mg) e maior proporção de metanol (2:1). Pelo método de Bligh e Dyer, o maior rendimento foi de 9,17 %, porém foram gastos 7 mL de clorofórmio, 1 mL de metanol e 5 horas e 50 minutos a mais. As condições de extração alteraram o perfil de ácidos graxos obtidos, já que, com a tecnologia de ultrassom obteve-se mais dois ácidos graxos (C:12 e C18:0 n-6 isômero) da biomassa. Concluiu-se que, a disrupção celular por micro-ondas pode ser utilizada como uma alternativa viável, pois, envolve menores tempos de processamento, mão-de-obra e gastos com solventes.

Algal turf scrubber (ATS) floways on the Great Wicomico River, Chesapeake Bay: productivity, algal community structure, substrate and chemistry1

2013 ◽  
Vol 49 (3) ◽  
pp. 489-501 ◽  
Author(s):  
Walter H. Adey ◽  
H. Dail Laughinghouse ◽  
John B. Miller ◽  
Lee-Ann C. Hayek ◽  
Jesse G. Thompson ◽  
...  
Keyword(s):  
Community Structure ◽  
Chesapeake Bay ◽  
Algal Community ◽  
Algal Turf ◽  
Algal Turf Scrubber

Skeletal characters for identification of juvenile Ophiactis resiliens and Amphiura constricta (Echinodermata): cryptic ophiuroids in coralline turf habitat

2006 ◽  
Vol 86 (5) ◽  
pp. 1199-1207 ◽  
Author(s):  
I. Falkner ◽  
M. Byrne
Keyword(s):  
Larval Stage ◽  
Early Stage ◽  
Skeletal Development ◽  
Algal Turf ◽  
Disc Diameter ◽  
Planktonic Larval Stage

Skeletal development of Ophiactis resiliens and Amphiura constricta was examined to determine characters that could be used to identify the juveniles of these species, which co-occur in algal turf habitat. Juvenile O. resiliens recruit to turf after a planktonic larval stage while A. constricta recruit through release from brooding adults. Skeletal development in O. resiliens and A. constricta is typical of most ophiuroids with diagnostic adult characters taking some time to appear. The main characters that can be used to distinguish the two species from an early stage are the number and arrangement of the oral papillae and the presence of disc spines. In O. resiliens diagnostic adult skeletal characters developed at 1.5 mm disc diameter. In A. constricta most identifying adult characters were evident at 700 μm disc diameter. Identification of juvenile O. resiliens is assisted by the presence of disc spines and thorny arm spines, features that disappear as the juveniles grow. Juvenile A. constricta did not develop disc spines or thorns on the arm spines.

scholarly journals Bioproducts characterization of residual periphytic biomass produced in an algal turf scrubber (ATS) bioremediation system

2020 ◽  
Vol 82 (6) ◽  
pp. 1247-1259
Author(s):  
Maiara P. de Souza ◽  
Tiele M. Rizzetti ◽  
Michele Hoeltz ◽  
Mainara Dahmer ◽  
João A. Júnior ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
High Performance ◽  
Optical Emission ◽  
Algal Turf ◽  
Gas Chromatography Mass Spectrometry ◽  
Emission Spectrometry ◽  
Inorganic Analysis ◽  
Array Detector ◽  
Algal Turf Scrubber ◽  
Social Gain

Abstract The transformation of residual biomass from bioremediation processes into new products is a worldwide trend driven by economic, environmental and social gain. The present study aimed to evaluate the potential for obtaining bioproducts of technological interest from the remaining periphytic biomass formed during a bioremediation process with an algal turf scrubber (ATS) system installed in a lake catchment. Different methodologies were used according to the target bioproduct. Analyses were performed by high performance liquid chromatography with diode array detector (HPLC/DAD), gas chromatography mass spectrometry (GC-MS), ultraviolet–visible spectroscopy (UV-VIS) and inductively coupled plasma optical emission spectrometry (ICP-OES). The results demonstrated that the periphytic biomass presented potential since protein (17.7%), carbohydrates (22.4%), total lipids (3.3%) with 3.6 mg mL−1 of fatty acids, antioxidants (144.5 μmol Trolox eq. g−1) and chlorophyll a, chlorophyll b and carotenoids (1,719.7 μg mL−1, 541.2 μg mL−1 and 317.7 μg mL−1, respectively) were obtained. Inorganic analysis presented a value of 42.3 ± 2.58% of total ash and metal presence was detected, indicating bioaccumulation. The properties found in periphyton strengthen the possibility of its application in different areas, ensuring bioremediation efficiency.

Techno-economic analysis of ash removal in biomass harvested from algal turf scrubbers

2019 ◽  
Vol 123 ◽  
pp. 149-158 ◽  
Author(s):  
Derek Hess ◽  
Lynn M. Wendt ◽  
Bradley D. Wahlen ◽  
John E. Aston ◽  
Hongqiang Hu ◽  
...  
Keyword(s):  
Economic Analysis ◽  
Algal Turf ◽  
Ash Removal
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