scholarly journals Moray eels are more common on coral reefs subject to higher human pressure in the greater Caribbean

iScience ◽  
2021 ◽  
Vol 24 (3) ◽  
pp. 102097
Author(s):  
Gina M. Clementi ◽  
Judith Bakker ◽  
Kathryn I. Flowers ◽  
Bautisse D. Postaire ◽  
Elizabeth A. Babcock ◽  
...  
Keyword(s):  
Coral Reefs ◽  
Human Pressure

scholarly journals Meeting fisheries, ecosystem function, and biodiversity goals in a human-dominated world

Science ◽  
2020 ◽  
Vol 368 (6488) ◽  
pp. 307-311 ◽  
Author(s):  
Joshua E. Cinner ◽  
Jessica Zamborain-Mason ◽  
Georgina G. Gurney ◽  
Nicholas A. J. Graham ◽  
M. Aaron MacNeil ◽  
...  
Keyword(s):  
Coral Reefs ◽  
Ecosystem Function ◽  
Ecological Function ◽  
Human Pressure ◽  
Management Tools ◽  
Reef Management ◽  
The People

The worldwide decline of coral reefs necessitates targeting management solutions that can sustain reefs and the livelihoods of the people who depend on them. However, little is known about the context in which different reef management tools can help to achieve multiple social and ecological goals. Because of nonlinearities in the likelihood of achieving combined fisheries, ecological function, and biodiversity goals along a gradient of human pressure, relatively small changes in the context in which management is implemented could have substantial impacts on whether these goals are likely to be met. Critically, management can provide substantial conservation benefits to most reefs for fisheries and ecological function, but not biodiversity goals, given their degraded state and the levels of human pressure they face.

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.

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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