Historic impact of watershed change and sedimentation to reefs along west-central Guam

Prouty, Nancy G.; Storlazzi, Curt D.; McCutcheon, Amanda; Jenson, John W.

doi:10.1007/s00338-014-1166-x

Cited by 20 publications

(13 citation statements)

References 68 publications

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“…Ramseyer et al (1997) found a correlation between luminescence and the skeletal architecture of speleotherms, marine cements, and coral skeletons and subsequently proposed that luminescence was associated with higher porosity and lower calcium carbonate density due to higher inclusions of organic fluorophores. Other studies, conversely, have reported positive relationships between massive Porites skeletal density and luminescence (Scoffin et al 1992;Carricart-Ganivet and Barnes 2007;Lough 2010;Prouty et al 2014). As a consequence, the causes of luminescent bands/lines and their relationship with skeletal density remain unclear.…”

Section: Introductionmentioning

confidence: 94%

Luminescence and density banding patterns in massive Porites corals around the Thai-Malay Peninsula, Southeast Asia

et al. 2016

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We characterized the annual luminescent and skeletal density banding patterns in 51 massive Porites corals from 15 reefs from six locations around the Thai‐Malay Peninsula in Southeast Asia, and explored the seasonal environmental cues/drivers of band formation. Location‐specific recurrent annual luminescent banding patterns were found at all study locations with a brighter band occurring toward the end of the year (∼October/November/December) (at five locations) and in ∼June (one location). Annual density banding patterns could only be discerned at four locations, and were categorized into those that formed a dense band commencing ∼November/December, and those starting ∼May/June. Overall, compared to luminescence, variations in skeletal density provided a less clear signal for demarcation of annual growth increments. Seasonal variations in luminescence showed clearest relationships with salinity, as a proxy for freshwater/river runoff. No convincing relationship between intra‐annual luminescence intensity and density variations was found, which supports the notion that luminescent banding is due to inclusions of fluorophores into the coral skeleton rather than variations in skeletal architecture. The relationships between seasonal density variations and significant wave height and rainfall suggest density banding in this region is likely related to wave energy, or some other correlated environmental parameter/s. The large variability in skeletal banding patterns not only highlights the current relatively poor understanding of their nature and causes, but also the need for replication in their interpretation, especially in settings with complex seasonal hydrodynamic/hydrological patterns such as those found around the Thai‐Malay Peninsula.

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Section: Introductionmentioning

confidence: 94%

Luminescence and density banding patterns in massive Porites corals around the Thai-Malay Peninsula, Southeast Asia

et al. 2016

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“…Coral reef ecosystems are particularly susceptible to the indirect effects of land cover change (Hunter and Evans, 1995;Wolanski et al, 2004;Bartley et al, 2014) as a result of increased pollutant levels that alter the oligotrophic and low-turbidity conditions in which these systems tend to thrive (Fabricius, 2005;Erftemeijer et al, 2012). Land cover changes have been associated with the deterioration of coral reef ecosystems throughout the world including Australia (Lewis et al, 2007), islands of the Pacific (Hodgson and Dixon, 1988;Prouty et al, 2010Prouty et al, , 2014Stender et al, 2014), Madagascar and Africa (McClanahan and Obura, 1997;Maina et al, 2012), Central, South and North America (Dutra et al, 2006;Jaap et al, 2008;Carilli et al, 2009), and the Insular Caribbean (Oliver et al, 2011;Bégin et al, 2014), among others.…”

Section: Introductionmentioning

confidence: 97%

Watershed- and island wide-scale land cover changes in Puerto Rico (1930s–2004) and their potential effects on coral reef ecosystems

Ramos‐Scharrón

Torres-Pulliza

Hernández-Delgado

2015

Science of The Total Environment

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“…This volatile compound oxidises to generate sulphuric acid in the atmosphere and has long been suggested to play a role in promoting condensation and cloud formation (Stefels et al 2007;Ayers and Cainey 2008). We remain uncertain how influential these processes are but the runoff, sediments and smoke that often results from deforestation and other land cover related processes can impact marine life, suggesting that emissions associated with these organisms would be affected (Abram et al 2003;Prouty et al 2014;Ramos-Scharrón et al 2015;Teneva et al 2016).…”

Section: Condensationmentioning

confidence: 99%

Forests, atmospheric water and an uncertain future: the new biology of the global water cycle

Sheil

2018

For. Ecosyst.

140

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Theory and evidence indicate that trees and other vegetation influence the atmospheric water-cycle in various ways. These influences are more important, more complex, and more poorly characterised than is widely realised. While there is little doubt that changes in tree cover will impact the water-cycle, the wider consequences remain difficult to predict as the underlying relationships and processes remain poorly characterised. Nonetheless, as forests are vulnerable to human activities, these linked aspects of the water-cycle are also at risk and the potential consequences of large scale forest loss are severe. Here, for non-specialist readers, I review our knowledge of the links between vegetation-cover and climate with a focus on forests and rain (precipitation). I highlight advances, uncertainties and research opportunities. There are significant shortcomings in our understanding of the atmospheric hydrological cycle and of its representation in climate models. A better understanding of the role of vegetation and tree-cover will reduce some of these shortcomings. I outline and illustrate various research themes where these advances may be found. These themes include the biology of evaporation, aerosols and atmospheric motion, as well as the processes that determine monsoons and diurnal precipitation cycles. A novel theory-the 'biotic pump'-suggests that evaporation and condensation can exert a major influence over atmospheric dynamics. This theory explains how high rainfall can be maintained within those continental land-masses that are sufficiently forested. Feedbacks within many of these processes can result in non-linear behaviours and the potential for dramatic changes as a result of forest loss (or gain): for example, switching from a wet to a dry local climate (or visa-versa). Much remains unknown and multiple research disciplines are needed to address this: forest scientists and other biologists have a major role to play. New ideas, methods and data offer opportunities to improve understanding. Expect surprises.

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Historic impact of watershed change and sedimentation to reefs along west-central Guam

Cited by 20 publications

References 68 publications

Luminescence and density banding patterns in massive Porites corals around the Thai-Malay Peninsula, Southeast Asia

Luminescence and density banding patterns in massive Porites corals around the Thai-Malay Peninsula, Southeast Asia

Watershed- and island wide-scale land cover changes in Puerto Rico (1930s–2004) and their potential effects on coral reef ecosystems

Forests, atmospheric water and an uncertain future: the new biology of the global water cycle

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