Microbial ecology: Algae feed a shift on coral reefs

2016 ◽  
Vol 1 (6) ◽  
Author(s):  
Melissa Garren
Keyword(s):  
Coral Reefs ◽  
Microbial Ecology

Regenerative functions and microbial ecology of coral reefs. I. Assays for microbial population

1971 ◽  
Vol 17 (8) ◽  
pp. 1081-1089 ◽  
Author(s):  
L. DiSalvo ◽  
K. Gundersen
Keyword(s):  
Coral Reefs ◽  
Microbial Ecology ◽  
Surface Sediments ◽  
Microbial Population ◽  
Aquatic Environments ◽  
Organic Residue ◽  
Efficient System ◽  
Bacterial Counts ◽  
Kaneohe Bay ◽  
Bacteria And Fungi

Sediments obtained from complex internal reef spaces at Kaneohe Bay, Hawaii, and Eniwetok Atoll, Marshall Is., were apparently homologous to the surface sediments of flat-bottomed aquatic environments. The sediments were heavily populated by bacteria, among which were numerous chitin- and agar-digesting species. Some bacteria and fungi from the reef sediments were capable of digesting a relatively insoluble organic residue obtained from thalli of a calcareous reef alga (Porolilhon sp.). Some elementary analyses of the reef sediments are presented for use in making comparisons of bacterial counts between stations.Arguments are made for the existence of an efficient system of mineralization based on the unique biogenic structure and high organismic diversity of coral reefs.

Pemetaan Pulau Kecil Gelasa Kabupaten Bangka Tengah

2019 ◽  
Vol 2 (1) ◽  
pp. 11-14
Author(s):  
Wahyu Adi
Keyword(s):  
Coral Reefs ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Image Interpretation ◽  
Vegetation Coverage ◽  
Small Island ◽  
Shallow Waters ◽  
Small Islands ◽  
Seagrass Beds ◽  
Cover Density

Pulau Kecil Gelasa merupakan daerah yang belum banyak diteliti. Pemetaan ekosistem di pulau kecil dilakukan dengan bantuan citra Advanced Land Observing Satellite (ALOS). Penelitian terdahulu diketahui bahwa ALOS memiliki kemampuan memetakan terumbu karang dan padang lamun di perairan dangkal serta mampu memetakan kerapatan penutupan vegetasi. Metode interpretasi citra menggunakan alogaritma indeks vegetasi pada citra ALOS yaitu NDVI (Normalized Difference Vegetation Index), serta pendekatan Lyzengga untuk mengkoreksi kolom perairan. Hasil penelitian didapatkan luasan Padang Lamun di perairan dangkal 41,99 Ha, luasan Terumbu Karang 125,57 Ha. Hasil NDVI di daratan/ pulau kecil Gelasa untuk Vegetasi Rapat seluas 47,62 Ha; luasan penutupan Vegetasi Sedang 105,86 Ha; dan penutupan Vegetasi Jarang adalah 34,24 Ha.   Small Island Gelasa rarely studied. Mapping ecosystems on small islands with the image of Advanced Land Observing Satellite (ALOS). Previous research has found that ALOS has the ability to map coral reefs and seagrass beds in shallow water, and is able to map vegetation cover density. The method of image interpretation uses the vegetation index algorithm in the ALOS image, NDVI (Normalized Difference Vegetation Index), and the Lyzengga approach to correct the water column. The results of the study were obtained in the area of Seagrass Padang in the shallow waters of 41.99 ha, the area of coral reefs was 125.57 ha. NDVI results on land / small islands Gelasa for dense vegetation of 47.62 ha; area of Medium Vegetation coverage 105.86 Ha; and the coverage of Rare Vegetation is 34.24 Ha.

Microbial ecology: from local to global scales

2008 ◽  
Vol 53 (1) ◽  
pp. 3-11 ◽  
Author(s):  
J Kuparinen ◽  
H Galvão
Keyword(s):  
Microbial Ecology

Drivers of herbivory on coral reefs: species, habitat and management effects

2016 ◽  
Vol 554 ◽  
pp. 129-140 ◽  
Author(s):  
KL Nash ◽  
RA Abesamis ◽  
NAJ Graham ◽  
EC McClure ◽  
E Moland
Keyword(s):  
Coral Reefs ◽  
Management Effects
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