scholarly journals Use of in situ and airborne reflectance for scaling-up spectral discrimination of coral reef macroalgae from species to communities

2004 ◽  
Vol 283 ◽  
pp. 161-177 ◽  
Author(s):  
S Andréfouët ◽  
C Payri ◽  
EJ Hochberg ◽  
C Hu ◽  
MJ Atkinson ◽  
...  
Keyword(s):  
Coral Reef ◽  
Scaling Up ◽  
Spectral Discrimination

scholarly journals Ocean acidification effects on in situ coral reef metabolism

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Steve S. Doo ◽  
Peter J. Edmunds ◽  
Robert C. Carpenter
Keyword(s):  
Coral Reef ◽  
Ocean Acidification

scholarly journals Scaling-up of microbial electrosynthesis with multiple electrodes for in situ production of hydrogen peroxide

iScience ◽  
2021 ◽  
Vol 24 (2) ◽  
pp. 102094
Author(s):  
Rusen Zou ◽  
Aliyeh Hasanzadeh ◽  
Alireza Khataee ◽  
Xiaoyong Yang ◽  
Mingyi Xu ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Scaling Up ◽  
Microbial Electrosynthesis ◽  
Multiple Electrodes ◽  
Production Of Hydrogen ◽  
In Situ Production

scholarly journals Optimasi Proses Epoksidasi Asam Oleat pada Scaling Up Sintesis Asam 9,10-Dihidroksi Stearat (DHSA) Bench Scale

2018 ◽  
Vol 12 (1) ◽  
pp. 39-46
Author(s):  
Maisaroh Maisaroh
Keyword(s):  
Engineering Design ◽  
Scaling Up ◽  
Bench Scale

Sintesis asam 9,10-dihidroksi stearat (DHSA) dari asam oleat terepoksidasi merupakan salah satu upaya yang akan meningkatkan penggunaan, diversifikasi dan nilai tambah minyak kelapa sawit. Scaling up proses epoksidasi asam oleat dari skala laboratorium ke bench scale (kapasitas 5 L) terjadi perubahan volume dan geometri dari peralatan yang akan mempengaruhi proses epoksidasi itu sendiri sehingga perlu dilakukan observasi terhadap parameter-parameter yang akan digunakan dalam basic dan engineering design. Tujuan dari penelitian ini adalah melakukan scaling up proses konsistensi dari skala laboratorium ke bench scale (kap. 5 L) epoksidasi asam oleat sebagai produk antara sintesis DHSA dalam pengembangan produk turunan kelapa sawit yang akan digunakan sebagai bahan kosmetik. Scaling Up epoksidasi asam oleat dengan asam performat yang dibentuk secara in situ dilakukan menggunakan reaktor 5 liter dengan perbandingan mol asam oleat : asam format : hidrogen peroksida 50% = 1 : 1,25 : 6. Produk epoksidasi ini akan dilanjutkan untuk dihidroksilasi pada sintesis DHSA sebagai bahan kosmetik.

scholarly journals Representative benthic habitat mapping on Lovina coral reefs in Northern Bali, Indonesia

2021 ◽  
Vol 22 (11) ◽  
Author(s):  
Anggita Kartikasari ◽  
TODHI PRISTIANTO ◽  
RIZKI HANINTYO ◽  
EGHBERT ELVAN AMPOU ◽  
TEJA ARIEF WIBAWA ◽  
...  
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Habitat Mapping ◽  
Benthic Habitat ◽  
Coral Rubble ◽  
Spatial Coverage ◽  
Coral Reef Ecosystems ◽  
Optical Imagery ◽  
Sentinel 2

Abstract. Kartikasari A, Pristianto T, Hanintyo R, Ampou EE, Wibawa TA, Borneo BB. 2021. Representative benthic habitat mapping on Lovina coral reefs in Northern Bali, Indonesia. Biodiversitas 22: 4766-4774. Satellite optical imagery datasets integrated with in situ measurements are widely used to derive the spatial distribution of various benthic habitats in coral reef ecosystems. In this study, an approach to estimate spatial coverage of those habitats based on observation derived from Sentinel-2 optical imagery and a field survey, is presented. This study focused on the Lovina coral reef ecosystem of Northern Bali, Indonesia to support deployment of artificial reefs within the Indonesian Coral Reef Garden (ICRG) programme. Three specific locations were explored: Temukus, Tukad Mungga, and Baktiseraga waters. Spatial benthic habitat coverages of these three waters was estimated based on supervised classification techniques using 10m bands of Sentinel-2 imagery and the medium scale approach (MSA) transect method of in situ measurement.The study indicates that total coverage of benthic habitat is 61.34 ha, 25.17 ha, and 27.88 ha for Temukus, Tukad Mungga, and Baktiseraga waters, respectively. The dominant benthic habitat of those three waters consists of sand, seagrass, coral, rubble, reef slope and intertidal zone. The coral reef coverage is 29.48 ha (48%) for Temukus covered by genus Acropora, Isopora, Porites, Montipora, Pocillopora. The coverage for Tukad Mungga is 8.69 ha (35%) covered by genus Acropora, Montipora, Favia, Psammocora, Porites, and the coverage for Baktiseraga is 11.37 ha (41%) covered by genus Montipora sp, Goniastrea, Pavona, Platygyra, Pocillopora, Porites, Acropora, Leptoseris, Acropora, Pocillopora, Fungia. The results are expected to be suitable as supporting data in restoring coral reef ecosystems in the northern part of Bali, especially in Buleleng District.

Nonintrusive Video Technique for in Situ Sizing of Coral Reef Fishes

Copeia ◽  
1999 ◽  
Vol 1999 (3) ◽  
pp. 789 ◽  
Author(s):  
Ronald P. Pfister ◽  
Denis Goulet
Keyword(s):  
Coral Reef ◽  
Reef Fishes ◽  
Coral Reef Fishes

scholarly journals Coral reef ecosystem integrated observing system: In-situ oceanographic observations at the US Pacific islands and atolls

2009 ◽  
Vol 2 (2) ◽  
pp. 3-14 ◽  
Author(s):  
RK Hoeke ◽  
JM Gove ◽  
E Smith ◽  
P Fisher-Pool ◽  
M Lammers ◽  
...  
Keyword(s):  
Coral Reef ◽  
Pacific Islands ◽  
Coral Reef Ecosystem ◽  
The Us ◽  
Reef Ecosystem

Coral reef pH altered in situ

2019 ◽  
Vol 3 (10) ◽  
pp. 1380-1381
Author(s):  
Jonathan S. Stark ◽  
Chris Langdon
Keyword(s):  
Coral Reef

Nitrification on a coral reef

1975 ◽  
Vol 21 (9) ◽  
pp. 1427-1431 ◽  
Author(s):  
Kenneth L. Webb ◽  
W. J. Wiebe
Keyword(s):  
Coral Reef ◽  
Reef Crest ◽  
Reef Environment ◽  
Nitrobacter Agilis ◽  
Enewetak Atoll ◽  
Terminal Oxidation ◽  
Oxidation Of Ammonia

We report that the algal pavement just behind the reef crest at Enewetak Atoll produces nitrate at measurable rates. In situ and in vitro incubations with N-Serve® indicate that the autotrophic pathway involving two separate organisms is effective in this oxidation of ammonia to nitrate. Significant nitrification is indicated throughout the reef environment; Nitrobacter agilis has specifically been identified as at least one of the organisms responsible for the terminal oxidation of nitrite to nitrate.

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