Coral reef health in the Gulf of Honduras in relation to fluvial runoff, hurricanes, and fishing pressure

2021 ◽  
Vol 172 ◽  
pp. 112865
Author(s):  
Björn Kjerfve ◽  
Melanie McField ◽  
Deeptha Thattai ◽  
Ana Giró
Keyword(s):  
Coral Reef ◽  
Fishing Pressure ◽  
Reef Health

Unexpected relationships between coral reef health and socio-economic pressures in the Philippines: reefbase/RAMP applied

2000 ◽  
Vol 51 (5) ◽  
pp. 529 ◽  
Author(s):  
Richard B. Pollnac ◽  
John W. McManus ◽  
A. E. del Rosario ◽  
A. A. Banzon ◽  
S. G. Vergara ◽  
...  
Keyword(s):  
Land Use ◽  
Coral Reef ◽  
Population Density ◽  
Coral Reefs ◽  
Waste Disposal ◽  
The Philippines ◽  
Anthropogenic Effects ◽  
Fishing Pressure ◽  
Resource Poor ◽  
Reef Health

The paper analyses variables hypothesized to affect the health of coral reefs. These variables include fishing pressure as measured by fisher density and land-based human activities as indicated by population, relative wealth, waste disposal and aspects of land use. Findings indicating that the healthiest coral reef areas are characterized by higher fisher densities as well as greater increases in population density were, at first, surprising. In retrospect, the results fit perfectly with human ecological theory; where possible, people tend to migrate from resource-poor to resource-rich areas. Any synchronic analyses of the interrelationships between the condition of aresource and associated population size or density will probably be confounded by the dynamics of the populations dependent on the resource. Hence, there is a need to account for this dynamic when researching anthropogenic effects on coral reefs. The findings also indicate that less-healthy reefs are found in areas with a higher percentage of land devoted to permanent crops; this appears to be related to observed high levels of runoff from permanent crops.

scholarly journals The coral reef health index in Teluk Sebong, Bintan Island

2021 ◽  
Vol 763 (1) ◽  
pp. 012066
Author(s):  
Dedy Kurniawan ◽  
Try Febrianto ◽  
Jumsurizal ◽  
Risandi Dwirama Putra
Keyword(s):  
Coral Reef ◽  
Health Index ◽  
Reef Health

scholarly journals A coral reef health study and its problem in Leti, Moa and Wetar Island, Mollucas Province

2021 ◽  
Vol 777 (1) ◽  
pp. 012003
Author(s):  
D D Pelasula ◽  
R Alik ◽  
F Ruli ◽  
F D Hukom ◽  
La Pay ◽  
...  
Keyword(s):  
Coral Reef ◽  
Health Study ◽  
Reef Health

FORAMINIFER-BASED CORAL REEF HEALTH ASSESSMENT FOR SOUTHWESTERN ATLANTIC OFFSHORE ARCHIPELAGOS, BRAZIL

2012 ◽  
Vol 42 (2) ◽  
pp. 169-183 ◽  
Author(s):  
C. F. Barbosa ◽  
B. P. Ferreira ◽  
J. C. S. Seoane ◽  
P. Oliveira-Silva ◽  
A. L. B. Gaspar ◽  
...  
Keyword(s):  
Coral Reef ◽  
Health Assessment ◽  
Southwestern Atlantic ◽  
Reef Health

scholarly journals Status of Coral Reefs in the Water of Spermonde, Makassar, South Sulawesi

2021 ◽  
Vol 324 ◽  
pp. 03007
Author(s):  
Ni Wayan Purnama Sari ◽  
Rikoh Manogar Siringoringo ◽  
Muhammad Abrar ◽  
Risandi Dwirama Putra ◽  
Raden Sutiadi ◽  
...  
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Coral Cover ◽  
Public Awareness ◽  
Live Coral ◽  
Health Index ◽  
Point Count ◽  
Live Coral Cover ◽  
Reef Health ◽  
Index Value

Observations of the condition of coral reefs have been carried out in Spermonde waters from 2015 to 2018. The method used in this observation uses Underwater Photo Transect (UPT), and the data obtained is analyzed using CPCe (Coral Point Count with Excel Extensions) software. The results show that the percentage of coral cover has increased from year to year. The percentage of live coral cover in 2015 was 19.64%, 23.60 in 2016, 23.72% in 2017, and 27.83% in 2018. The increase in live coral cover from year to year is thought to occur due to the availability of nutrients. or increasing public awareness, considering this location is one of the most famous tourist attractions in Makassar. Coral reef health index values can be used to classify coral reef health. Through the analysis of the coral reef health index, an index value of 4 was obtained, which means that the condition of the coral reefs is in the “moderate” category.

Bioeroding sponge assemblages: the importance of substrate availability and sediment

2018 ◽  
Vol 99 (2) ◽  
pp. 343-358 ◽  
Author(s):  
Joseph Marlow ◽  
Christine H.L. Schönberg ◽  
Simon K. Davy ◽  
Abdul Haris ◽  
Jamaluddin Jompa ◽  
...  
Keyword(s):  
Coral Reef ◽  
Environmental Factors ◽  
Spatial Variation ◽  
Environmental Conditions ◽  
Sponge Species ◽  
Coral Mortality ◽  
Substrate Availability ◽  
Abiotic Conditions ◽  
Assemblage Composition ◽  
Reef Health

Despite global deterioration of coral reef health, not all reef-associated organisms are in decline. Bioeroding sponges are thought to be largely resistant to the factors that stress and kill corals, and are increasing in abundance on many reefs. However, there is a paucity of information on how environmental factors influence spatial variation in the distribution of these sponges, and how they might be affected by different stressors. We aimed to identify the factors that explained differences in bioeroding sponge abundance and assemblage composition, and to determine whether bioeroding sponges benefit from the same environmental conditions that can contribute towards coral mortality. Abundance surveys were conducted in the Wakatobi region of Indonesia on reefs characterized by different biotic and abiotic conditions. Bioeroding sponges occupied an average of 8.9% of available dead substrate and variation in abundance and assemblage composition was primarily attributed to differences in the availability of dead substrate. Our results imply that if dead substrate availability increases as a consequence of coral mortality, bioeroding sponge abundance is also likely to increase. However, bioeroding sponge abundance was lowest on a sedimented reef, despite abundant dead substrate. This suggests that not all forms of coral mortality will benefit all bioeroding sponge species, and sediment-degraded reefs are likely to be dominated by a few resilient bioeroding sponge species. Overall, we demonstrate the importance of understanding the drivers of bioeroding sponge abundance and assemblage composition in order to predict possible impacts of different stressors on reefs communities.

Changes in a coral reef fishery along a gradient of fishing pressure in an Indonesian marine protected area

2013 ◽  
Vol 24 (1) ◽  
pp. 92-103 ◽  
Author(s):  
S. J. Campbell ◽  
A. Mukminin ◽  
T. Kartawijaya ◽  
C. Huchery ◽  
J. E. Cinner
Keyword(s):  
Coral Reef ◽  
Protected Area ◽  
Marine Protected Area ◽  
Fishing Pressure ◽  
Coral Reef Fishery

scholarly journals Terrestrial degradation impacts on coral reef health: Evidence from the Caribbean

2017 ◽  
Vol 149 ◽  
pp. 52-68 ◽  
Author(s):  
Michaela Roberts ◽  
Nick Hanley ◽  
Sam Williams ◽  
Will Cresswell
Keyword(s):  
Coral Reef ◽  
Reef Health ◽  
The Caribbean

Hyperspectral Remote Sensing and Radiative Transfer Simulation as a Tool for Monitoring Coral Reef Health

2002 ◽  
Vol 36 (1) ◽  
pp. 4-13 ◽  
Author(s):  
Hiroya Yamano ◽  
Masayuki Tamura ◽  
Yoshimitsu Kunii ◽  
Michio Hidaka
Keyword(s):  
Remote Sensing ◽  
Coral Reef ◽  
Radiative Transfer ◽  
Feasibility Studies ◽  
Hyperspectral Remote Sensing ◽  
Hyperspectral Data ◽  
Dead Coral ◽  
Hyperspectral Sensors ◽  
Reef Health ◽  
Radiative Transfer Modeling

Recent advances in the remote sensing of coral reefs include hyperspectral remote sensing and radiative transfer modeling. Hyperspectral data can be regarded as continuous and the derivative spectroscopy is effective for extracting coral reef components, including sand, macroalgae, and healthy, bleached, recently dead, and old dead coral. Radiative transfer models are effective for feasibility studies of satellite or airborne remote sensing. Using these techniques, we simulate and analyze the apparent reflectance of coral reef benthic features associated with bleaching events, obtained by hyperspectral sensors on various platforms (ROV, boat, airplane, and satellite), and suggest that the coral reef health on reef flats can be discriminated precisely. Remote sensing using hyperspectral sensors should significantly contribute to mapping and monitoring coral reef health.

Sign in / Sign up

Export Citation Format

Share Document